Release 1.55.0

[SVN r86621]
Merged revision(s) 85995 from trunk: Remove #pragma intrinsic( _mm_pause ); not needed, not supported on Intel. Closes #6646 , #7318 .
2025-11-04 01:31:51 +01:00 · 2013-11-11 19:45:21 +00:00 · 2013-10-24 14:05:26 +00:00 · 2013-09-08 17:17:18 +00:00 · 2013-05-26 13:39:04 +00:00 · 2013-04-15 15:13:20 +00:00
256 changed files with 32763 additions and 626 deletions
--- a/compatibility.htm
+++ b/compatibility.htm
@@ -0,0 +1,88 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+	<head>
+		<title>Smart Pointer Changes</title>
+		<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+	</head>
+	<body bgcolor="#ffffff" text="#000000">
+		<h1><A href="../../index.htm"><img src="../../boost.png" alt="boost.png (6897 bytes)" align="middle" width="277" height="86"
+					border="0"></A>Smart Pointer Changes</h1>
+		<p>The February 2002 change to the Boost smart pointers introduced a number of 
+			changes. Since the previous version of the smart pointers was in use for a long 
+			time, it's useful to have a detailed list of what changed from a library user's 
+			point of view.</p>
+		<p>Note that for compilers that don't support member templates well enough, a 
+			separate implementation is used that lacks many of the new features and is more 
+			like the old version.</p>
+		<h2>Features Requiring Code Changes to Take Advantage</h2>
+		<ul>
+			<li>
+				The smart pointer class templates now each have their own header file. For 
+				compatibility, the <a href="../../boost/smart_ptr.hpp">&lt;boost/smart_ptr.hpp&gt;</a>
+			header now includes the headers for the four classic smart pointer class 
+			templates.
+			<li>
+				The <b>weak_ptr</b>
+			template was added.
+			<li>
+				The new <b>shared_ptr</b> and <b>shared_array</b> relax the requirement that 
+				the pointed-to object's destructor must be visible when instantiating the <b>shared_ptr</b>
+			destructor. This makes it easier to have shared_ptr members in classes without 
+			explicit destructors.
+			<li>
+				A custom deallocator can be passed in when creating a <b>shared_ptr</b> or <b>shared_array</b>.
+			<li>
+				<b>shared_static_cast</b> and <b>shared_dynamic_cast</b> function templates are 
+				provided which work for <b>shared_ptr</b> and <b>weak_ptr</b> as <b>static_cast</b>
+				and <b>dynamic_cast</b>
+			do for pointers.
+			<li>
+				The self-assignment misfeature has been removed from <b>shared_ptr::reset</b>, 
+				although it is still present in <b>scoped_ptr</b>, and in <b>std::auto_ptr</b>. 
+				Calling <b>reset</b> with a pointer to the object that's already owned by the <b>shared_ptr</b>
+			results in undefined behavior (an assertion, or eventually a double-delete if 
+			assertions are off).
+			<li>
+				The <b>BOOST_SMART_PTR_CONVERSION</b>
+			feature has been removed.
+			<li>
+				<b>shared_ptr&lt;void&gt;</b> is now allowed.</li>
+		</ul>
+		<h2>Features That Improve Robustness</h2>
+		<ul>
+			<li>
+				The manipulation of use counts is now <a name="threadsafe">thread safe</a> on 
+				Windows, Linux, and platforms that support pthreads. See the <a href="../../boost/detail/atomic_count.hpp">
+					&lt;boost/detail/atomic_count.hpp&gt;</a>
+			file for details
+			<li>
+				The new shared_ptr will always delete the object using the pointer it was 
+				originally constructed with. This prevents subtle problems that could happen if 
+				the last <b>shared_ptr</b> was a pointer to a sub-object of a class that did 
+				not have a virtual destructor.</li>
+		</ul>
+		<h2>Implementation Details</h2>
+		<ul>
+			<li>
+				Some bugs in the assignment operator implementations and in <b>reset</b>
+			have been fixed by using the "copy and swap" idiom.
+			<li>
+				Assertions have been added to check preconditions of various functions; 
+				however, since these use the new <a href="../../boost/assert.hpp">&lt;boost/assert.hpp&gt;</a>
+			header, the assertions are disabled by default.
+			<li>
+				The partial specialization of <b>std::less</b> has been replaced by <b>operator&lt;</b>
+			overloads which accomplish the same thing without relying on undefined 
+			behavior.
+			<li>
+				The incorrect overload of <b>std::swap</b> has been replaced by <b>boost::swap</b>, 
+				which has many of the same advantages for generic programming but does not 
+				violate the C++ standard.</li>
+		</ul>
+		<hr>
+		<p>Revised 1 February 2002</p>
+		<p><small>Copyright 2002 Darin Adler. Distributed under the Boost Software License, Version 
+				1.0. See accompanying file <A href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</A> or 
+				copy at <A href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</A>.</small></p>
+	</body>
+</html>
--- a/enable_shared_from_this.html
+++ b/enable_shared_from_this.html
@@ -0,0 +1,95 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
+<html>
+	<head>
+		<title>Boost: enable_shared_from_this.hpp documentation</title>
+		<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+	</head>
+	<body bgcolor="white" style="MARGIN-LEFT: 5%; MARGIN-RIGHT: 5%">
+		<table border="0" width="100%">
+			<tr>
+				<td width="277"><A href="../../index.htm"> <img src="../../boost.png" alt="boost.png (6897 bytes)" width="277" height="86" border="0"></A>
+				</td>
+				<td align="center">
+					<h1>enable_shared_from_this.hpp</h1>
+				</td>
+			</tr>
+			<tr>
+				<td colspan="2" height="64">&nbsp;</td>
+			</tr>
+		</table>
+		<h3><a name="Purpose">Purpose</a></h3>
+		<p>
+			The header <STRONG>&lt;boost/enable_shared_from_this.hpp&gt;</STRONG> defines 
+			the class template <STRONG>enable_shared_from_this</STRONG>. It is used as a 
+			base class that allows a <A href="shared_ptr.htm">shared_ptr</A> to the current 
+			object to be obtained from within a member function.
+		</p>
+		<P><STRONG>enable_shared_from_this&lt;T&gt;</STRONG> defines two member functions 
+			called <STRONG>shared_from_this</STRONG> that return a <STRONG>shared_ptr&lt;T&gt;</STRONG>
+			and <STRONG>shared_ptr&lt;T const&gt;</STRONG>, depending on constness, to <STRONG>this</STRONG>.</P>
+		<h3><a name="Example">Example</a></h3>
+		<pre>
+#include &lt;boost/enable_shared_from_this.hpp&gt;
+#include &lt;boost/shared_ptr.hpp&gt;
+#include &lt;cassert&gt;
+
+class Y: public boost::enable_shared_from_this&lt;Y&gt;
+{
+public:
+
+    boost::shared_ptr&lt;Y&gt; f()
+    {
+        return shared_from_this();
+    }
+};
+
+int main()
+{
+    boost::shared_ptr&lt;Y&gt; p(new Y);
+    boost::shared_ptr&lt;Y&gt; q = p-&gt;f();
+    assert(p == q);
+    assert(!(p &lt; q || q &lt; p)); // p and q must share ownership
+}
+</pre>
+		<h3><a name="Synopsis">Synopsis</a></h3>
+		<pre>
+namespace boost
+{
+
+template&lt;class T&gt; class enable_shared_from_this
+{
+public:
+
+    shared_ptr&lt;T&gt; shared_from_this();
+    shared_ptr&lt;T const&gt; shared_from_this() const;
+}
+
+}
+</pre>
+		<h4>template&lt;class T&gt; shared_ptr&lt;T&gt; 
+			enable_shared_from_this&lt;T&gt;::shared_from_this();</h4>
+		<h4>template&lt;class T&gt; shared_ptr&lt;T const&gt; 
+			enable_shared_from_this&lt;T&gt;::shared_from_this() const;</h4>
+		<blockquote>
+			<p>
+				<b>Requires:</b> <STRONG>enable_shared_from_this&lt;T&gt;</STRONG> must be an 
+				accessible base class of <b>T</b>. <STRONG>*this</STRONG> must be a subobject 
+				of an instance <STRONG>t</STRONG> of type <STRONG>T</STRONG> . There must exist 
+				at least one <STRONG>shared_ptr</STRONG> instance <STRONG>p</STRONG> that <EM>owns</EM>
+				<STRONG>t</STRONG>.
+			</p>
+			<p>
+				<b>Returns:</b> A <b>shared_ptr&lt;T&gt;</b> instance <b>r</b> that shares 
+				ownership with <b>p</b>.
+			</p>
+			<p>
+				<b>Postconditions:</b> <tt>r.get() == this</tt>.
+			</p>
+		</blockquote>
+		<p>
+			<br>
+			<small>Copyright <20> 2002, 2003 by Peter Dimov. Distributed under the Boost Software License, Version 
+				1.0. See accompanying file <A href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</A> or 
+				copy at <A href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</A>.</small></p>
+	</body>
+</html>
--- a/example/scoped_ptr_example.cpp
+++ b/example/scoped_ptr_example.cpp
@@ -0,0 +1,23 @@
+// Boost scoped_ptr_example implementation file  -----------------------------//
+
+//  Copyright Beman Dawes 2001.  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+//  See http://www.boost.org/libs/smart_ptr for documentation.
+
+#include "scoped_ptr_example.hpp"
+#include <iostream>
+
+class example::implementation
+{
+ public:
+  ~implementation() { std::cout << "destroying implementation\n"; }
+};
+
+example::example() : _imp( new implementation ) {}
+
+void example::do_something() { std::cout << "did something\n"; }
+
+example::~example() {}
--- a/example/scoped_ptr_example.hpp
+++ b/example/scoped_ptr_example.hpp
@@ -0,0 +1,29 @@
+//  Boost scoped_ptr_example header file  ------------------------------------//
+
+//  Copyright Beman Dawes 2001.  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+//  See http://www.boost.org/libs/smart_ptr for documentation.
+
+#include <boost/utility.hpp>
+#include <boost/scoped_ptr.hpp>
+
+//  The point of this example is to prove that even though
+//  example::implementation is an incomplete type in translation units using
+//  this header, scoped_ptr< implementation > is still valid because the type
+//  is complete where it counts - in the inplementation translation unit where
+//  destruction is actually instantiated.
+
+class example : private boost::noncopyable
+{
+ public:
+  example();
+  ~example();
+  void do_something();
+ private:
+  class implementation;
+  boost::scoped_ptr< implementation > _imp; // hide implementation details
+};
+
--- a/example/scoped_ptr_example_test.cpp
+++ b/example/scoped_ptr_example_test.cpp
@@ -0,0 +1,17 @@
+// Boost scoped_ptr_example_test main program  -------------------------------//
+
+//  Copyright Beman Dawes 2001.  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+//  See http://www.boost.org/libs/smart_ptr for documentation.
+
+#include "scoped_ptr_example.hpp"
+
+int main()
+{
+  example my_example;
+  my_example.do_something();
+  return 0;
+}
--- a/example/shared_ptr_example.cpp
+++ b/example/shared_ptr_example.cpp
@@ -0,0 +1,95 @@
+//  Boost shared_ptr_example.cpp  --------------------------------------------//
+
+//  Copyright Beman Dawes 2001.  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+//  See http://www.boost.org/libs/smart_ptr for documentation.
+
+//  Revision History
+//  21 May 01  Initial complete version (Beman Dawes)
+
+//  The original code for this example appeared in the shared_ptr documentation.
+//  Ray Gallimore pointed out that foo_set was missing a Compare template
+//  argument, so would not work as intended.  At that point the code was
+//  turned into an actual .cpp file so it could be compiled and tested.
+
+#include <vector>
+#include <set>
+#include <iostream>
+#include <algorithm>
+#include <boost/shared_ptr.hpp>
+
+//  The application will produce a series of
+//  objects of type Foo which later must be
+//  accessed both by occurrence (std::vector)
+//  and by ordering relationship (std::set).
+
+struct Foo
+{ 
+  Foo( int _x ) : x(_x) {}
+  ~Foo() { std::cout << "Destructing a Foo with x=" << x << "\n"; }
+  int x;
+  /* ... */
+};
+
+typedef boost::shared_ptr<Foo> FooPtr;
+
+struct FooPtrOps
+{
+  bool operator()( const FooPtr & a, const FooPtr & b )
+    { return a->x > b->x; }
+  void operator()( const FooPtr & a )
+    { std::cout << a->x << "\n"; }
+};
+
+int main()
+{
+  std::vector<FooPtr>         foo_vector;
+  std::set<FooPtr,FooPtrOps>  foo_set; // NOT multiset!
+
+  FooPtr foo_ptr( new Foo( 2 ) );
+  foo_vector.push_back( foo_ptr );
+  foo_set.insert( foo_ptr );
+
+  foo_ptr.reset( new Foo( 1 ) );
+  foo_vector.push_back( foo_ptr );
+  foo_set.insert( foo_ptr );
+
+  foo_ptr.reset( new Foo( 3 ) );
+  foo_vector.push_back( foo_ptr );
+  foo_set.insert( foo_ptr );
+
+  foo_ptr.reset ( new Foo( 2 ) );
+  foo_vector.push_back( foo_ptr );
+  foo_set.insert( foo_ptr );
+
+  std::cout << "foo_vector:\n";
+  std::for_each( foo_vector.begin(), foo_vector.end(), FooPtrOps() );
+  
+  std::cout << "\nfoo_set:\n"; 
+  std::for_each( foo_set.begin(), foo_set.end(), FooPtrOps() );
+  std::cout << "\n";
+
+//  Expected output:
+//
+//   foo_vector:
+//   2
+//   1
+//   3
+//   2
+//   
+//   foo_set:
+//   3
+//   2
+//   1
+//
+//   Destructing a Foo with x=2
+//   Destructing a Foo with x=1
+//   Destructing a Foo with x=3
+//   Destructing a Foo with x=2
+   
+  return 0;
+}
+
--- a/example/shared_ptr_example2.cpp
+++ b/example/shared_ptr_example2.cpp
@@ -0,0 +1,22 @@
+// Boost shared_ptr_example2 implementation file  -----------------------------//
+
+//  Copyright Beman Dawes 2001.  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+//  See http://www.boost.org/libs/smart_ptr for documentation.
+
+#include "shared_ptr_example2.hpp"
+#include <iostream>
+
+class example::implementation
+{
+ public:
+  ~implementation() { std::cout << "destroying implementation\n"; }
+};
+
+example::example() : _imp( new implementation ) {}
+
+void example::do_something()
+  { std::cout << "use_count() is " << _imp.use_count() << "\n"; }
--- a/example/shared_ptr_example2.hpp
+++ b/example/shared_ptr_example2.hpp
@@ -0,0 +1,31 @@
+//  Boost shared_ptr_example2 header file  -----------------------------------//
+
+//  Copyright Beman Dawes 2001.  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+//  See http://www.boost.org/libs/smart_ptr for documentation.
+
+#include <boost/shared_ptr.hpp>
+
+//  This example demonstrates the handle/body idiom (also called pimpl and
+//  several other names).  It separates the interface (in this header file)
+//  from the implementation (in shared_ptr_example2.cpp).
+
+//  Note that even though example::implementation is an incomplete type in
+//  some translation units using this header, shared_ptr< implementation >
+//  is still valid because the type is complete where it counts - in the
+//  shared_ptr_example2.cpp translation unit where functions requiring a
+//  complete type are actually instantiated.
+
+class example
+{
+public:
+  example();
+  void do_something();
+private:
+  class implementation;
+  boost::shared_ptr< implementation > _imp; // hide implementation details
+};
+
--- a/example/shared_ptr_example2_test.cpp
+++ b/example/shared_ptr_example2_test.cpp
@@ -0,0 +1,22 @@
+// Boost shared_ptr_example2_test main program  ------------------------------//
+
+//  Copyright Beman Dawes 2001.  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+//  See http://www.boost.org/libs/smart_ptr for documentation.
+
+#include "shared_ptr_example2.hpp"
+
+int main()
+{
+  example a;
+  a.do_something();
+  example b(a);
+  b.do_something();
+  example c;
+  c = a;
+  c.do_something();
+  return 0;
+}
--- a/gccspeed.gif
+++ b/gccspeed.gif
--- a/include/boost/detail/atomic_count.hpp
+++ b/include/boost/detail/atomic_count.hpp
@@ -0,0 +1,21 @@
+#ifndef BOOST_DETAIL_ATOMIC_COUNT_HPP_INCLUDED
+#define BOOST_DETAIL_ATOMIC_COUNT_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  boost/detail/atomic_count.hpp - thread/SMP safe reference counter
+//
+//  Copyright (c) 2001, 2002 Peter Dimov and Multi Media Ltd.
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/smart_ptr/detail/atomic_count.hpp>
+
+#endif // #ifndef BOOST_DETAIL_ATOMIC_COUNT_HPP_INCLUDED
--- a/include/boost/detail/lightweight_mutex.hpp
+++ b/include/boost/detail/lightweight_mutex.hpp
@@ -0,0 +1,22 @@
+#ifndef BOOST_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED
+#define BOOST_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  boost/detail/lightweight_mutex.hpp - lightweight mutex
+//
+//  Copyright (c) 2002, 2003 Peter Dimov and Multi Media Ltd.
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/smart_ptr/detail/lightweight_mutex.hpp>
+
+#endif // #ifndef BOOST_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED
--- a/include/boost/detail/sp_typeinfo.hpp
+++ b/include/boost/detail/sp_typeinfo.hpp
@@ -0,0 +1,135 @@
+#ifndef BOOST_DETAIL_SP_TYPEINFO_HPP_INCLUDED
+#define BOOST_DETAIL_SP_TYPEINFO_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  detail/sp_typeinfo.hpp
+//
+//  Copyright 2007 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/config.hpp>
+
+#if defined( BOOST_NO_TYPEID )
+
+#include <boost/current_function.hpp>
+#include <functional>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class sp_typeinfo
+{
+private:
+
+    sp_typeinfo( sp_typeinfo const& );
+    sp_typeinfo& operator=( sp_typeinfo const& );
+
+    char const * name_;
+
+public:
+
+    explicit sp_typeinfo( char const * name ): name_( name )
+    {
+    }
+
+    bool operator==( sp_typeinfo const& rhs ) const
+    {
+        return this == &rhs;
+    }
+
+    bool operator!=( sp_typeinfo const& rhs ) const
+    {
+        return this != &rhs;
+    }
+
+    bool before( sp_typeinfo const& rhs ) const
+    {
+        return std::less< sp_typeinfo const* >()( this, &rhs );
+    }
+
+    char const* name() const
+    {
+        return name_;
+    }
+};
+
+template<class T> struct sp_typeid_
+{
+    static sp_typeinfo ti_;
+
+    static char const * name()
+    {
+        return BOOST_CURRENT_FUNCTION;
+    }
+};
+
+#if defined(__SUNPRO_CC)
+// see #4199, the Sun Studio compiler gets confused about static initialization 
+// constructor arguments. But an assignment works just fine. 
+template<class T> sp_typeinfo sp_typeid_< T >::ti_ = sp_typeid_< T >::name();
+#else
+template<class T> sp_typeinfo sp_typeid_< T >::ti_(sp_typeid_< T >::name());
+#endif
+
+template<class T> struct sp_typeid_< T & >: sp_typeid_< T >
+{
+};
+
+template<class T> struct sp_typeid_< T const >: sp_typeid_< T >
+{
+};
+
+template<class T> struct sp_typeid_< T volatile >: sp_typeid_< T >
+{
+};
+
+template<class T> struct sp_typeid_< T const volatile >: sp_typeid_< T >
+{
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#define BOOST_SP_TYPEID(T) (boost::detail::sp_typeid_<T>::ti_)
+
+#else
+
+#include <typeinfo>
+
+namespace boost
+{
+
+namespace detail
+{
+
+#if defined( BOOST_NO_STD_TYPEINFO )
+
+typedef ::type_info sp_typeinfo;
+
+#else
+
+typedef std::type_info sp_typeinfo;
+
+#endif
+
+} // namespace detail
+
+} // namespace boost
+
+#define BOOST_SP_TYPEID(T) typeid(T)
+
+#endif
+
+#endif  // #ifndef BOOST_DETAIL_SP_TYPEINFO_HPP_INCLUDED
--- a/include/boost/enable_shared_from_this.hpp
+++ b/include/boost/enable_shared_from_this.hpp
@@ -0,0 +1,18 @@
+#ifndef BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
+#define BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
+
+//
+//  enable_shared_from_this.hpp
+//
+//  Copyright (c) 2002 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  http://www.boost.org/libs/smart_ptr/enable_shared_from_this.html
+//
+
+#include <boost/smart_ptr/enable_shared_from_this.hpp>
+
+#endif  // #ifndef BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
--- a/include/boost/get_pointer.hpp
+++ b/include/boost/get_pointer.hpp
@@ -0,0 +1,48 @@
+// Copyright Peter Dimov and David Abrahams 2002.
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+#ifndef GET_POINTER_DWA20021219_HPP
+#define GET_POINTER_DWA20021219_HPP
+
+#include <boost/config.hpp>
+
+// In order to avoid circular dependencies with Boost.TR1
+// we make sure that our include of <memory> doesn't try to
+// pull in the TR1 headers: that's why we use this header 
+// rather than including <memory> directly:
+#include <boost/config/no_tr1/memory.hpp>  // std::auto_ptr
+
+namespace boost { 
+
+// get_pointer(p) extracts a ->* capable pointer from p
+
+template<class T> T * get_pointer(T * p)
+{
+    return p;
+}
+
+// get_pointer(shared_ptr<T> const & p) has been moved to shared_ptr.hpp
+
+template<class T> T * get_pointer(std::auto_ptr<T> const& p)
+{
+    return p.get();
+}
+
+#if !defined( BOOST_NO_CXX11_SMART_PTR )
+
+template<class T> T * get_pointer( std::unique_ptr<T> const& p )
+{
+    return p.get();
+}
+
+template<class T> T * get_pointer( std::shared_ptr<T> const& p )
+{
+    return p.get();
+}
+
+#endif
+
+} // namespace boost
+
+#endif // GET_POINTER_DWA20021219_HPP
--- a/include/boost/intrusive_ptr.hpp
+++ b/include/boost/intrusive_ptr.hpp
@@ -0,0 +1,18 @@
+#ifndef BOOST_INTRUSIVE_PTR_HPP_INCLUDED
+#define BOOST_INTRUSIVE_PTR_HPP_INCLUDED
+
+//
+//  intrusive_ptr.hpp
+//
+//  Copyright (c) 2001, 2002 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  See http://www.boost.org/libs/smart_ptr/intrusive_ptr.html for documentation.
+//
+
+#include <boost/smart_ptr/intrusive_ptr.hpp>
+
+#endif  // #ifndef BOOST_INTRUSIVE_PTR_HPP_INCLUDED
--- a/include/boost/make_shared.hpp
+++ b/include/boost/make_shared.hpp
@@ -0,0 +1,17 @@
+#ifndef BOOST_MAKE_SHARED_HPP_INCLUDED
+#define BOOST_MAKE_SHARED_HPP_INCLUDED
+
+//  make_shared.hpp
+//
+//  Copyright (c) 2007, 2008 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  See http://www.boost.org/libs/smart_ptr/make_shared.html
+//  for documentation.
+
+#include <boost/smart_ptr/make_shared.hpp>
+
+#endif // #ifndef BOOST_MAKE_SHARED_HPP_INCLUDED
--- a/include/boost/memory_order.hpp
+++ b/include/boost/memory_order.hpp
@@ -0,0 +1,53 @@
+#ifndef BOOST_MEMORY_ORDER_HPP_INCLUDED
+#define BOOST_MEMORY_ORDER_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  boost/memory_order.hpp
+//
+//  Defines enum boost::memory_order per the C++0x working draft
+//
+//  Copyright (c) 2008, 2009 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+
+namespace boost
+{
+
+//
+// Enum values are chosen so that code that needs to insert
+// a trailing fence for acquire semantics can use a single
+// test such as:
+//
+// if( mo & memory_order_acquire ) { ...fence... }
+//
+// For leading fences one can use:
+//
+// if( mo & memory_order_release ) { ...fence... }
+//
+// Architectures such as Alpha that need a fence on consume
+// can use:
+//
+// if( mo & ( memory_order_acquire | memory_order_consume ) ) { ...fence... }
+//
+
+enum memory_order
+{
+    memory_order_relaxed = 0,
+    memory_order_acquire = 1,
+    memory_order_release = 2,
+    memory_order_acq_rel = 3, // acquire | release
+    memory_order_seq_cst = 7, // acq_rel | 4
+    memory_order_consume = 8
+};
+
+} // namespace boost
+
+#endif // #ifndef BOOST_MEMORY_ORDER_HPP_INCLUDED
--- a/include/boost/pointer_cast.hpp
+++ b/include/boost/pointer_cast.hpp
@@ -0,0 +1,45 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2005. 
+// Distributed under the Boost Software License, Version 1.0. 
+// (See accompanying file LICENSE_1_0.txt or copy at 
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_POINTER_CAST_HPP
+#define BOOST_POINTER_CAST_HPP
+
+namespace boost { 
+
+//static_pointer_cast overload for raw pointers
+template<class T, class U>
+inline T* static_pointer_cast(U *ptr)
+{  
+   return static_cast<T*>(ptr);
+}
+
+//dynamic_pointer_cast overload for raw pointers
+template<class T, class U>
+inline T* dynamic_pointer_cast(U *ptr)
+{  
+   return dynamic_cast<T*>(ptr);
+}
+
+//const_pointer_cast overload for raw pointers
+template<class T, class U>
+inline T* const_pointer_cast(U *ptr)
+{  
+   return const_cast<T*>(ptr);
+}
+
+//reinterpret_pointer_cast overload for raw pointers
+template<class T, class U>
+inline T* reinterpret_pointer_cast(U *ptr)
+{  
+   return reinterpret_cast<T*>(ptr);
+}
+
+} // namespace boost
+
+#endif   //BOOST_POINTER_CAST_HPP
--- a/include/boost/pointer_to_other.hpp
+++ b/include/boost/pointer_to_other.hpp
@@ -0,0 +1,55 @@
+#ifndef BOOST_POINTER_TO_OTHER_HPP_INCLUDED
+#define BOOST_POINTER_TO_OTHER_HPP_INCLUDED
+
+//
+//  pointer_to_other.hpp
+//
+//  (C) Copyright Ion Gaztanaga 2005.
+//  Copyright (c) 2005 Peter Dimov.
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//
+//  (See accompanying file LICENSE_1_0.txt or copy at 
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/smart_ptr/pointer_to_other.html
+//
+
+namespace boost
+{
+
+// Defines the same pointer type (raw or smart) to another pointee type
+
+template<class T, class U>
+struct pointer_to_other;
+
+template<class T, class U, 
+         template<class> class Sp>
+struct pointer_to_other< Sp<T>, U >
+{
+   typedef Sp<U> type;
+};
+
+template<class T, class T2, class U, 
+         template<class, class> class Sp>
+struct pointer_to_other< Sp<T, T2>, U >
+{
+   typedef Sp<U, T2> type;
+};
+
+template<class T, class T2, class T3, class U, 
+         template<class, class, class> class Sp>
+struct pointer_to_other< Sp<T, T2, T3>, U >
+{
+   typedef Sp<U, T2, T3> type;
+};
+
+template<class T, class U>
+struct pointer_to_other< T*, U >
+{
+   typedef U* type;
+};
+
+} // namespace boost
+
+#endif // #ifndef BOOST_POINTER_TO_OTHER_HPP_INCLUDED
--- a/include/boost/scoped_array.hpp
+++ b/include/boost/scoped_array.hpp
@@ -0,0 +1,16 @@
+#ifndef BOOST_SCOPED_ARRAY_HPP_INCLUDED
+#define BOOST_SCOPED_ARRAY_HPP_INCLUDED
+
+//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+//  Copyright (c) 2001, 2002 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  http://www.boost.org/libs/smart_ptr/scoped_array.htm
+//
+
+#include <boost/smart_ptr/scoped_array.hpp>
+
+#endif  // #ifndef BOOST_SCOPED_ARRAY_HPP_INCLUDED
--- a/include/boost/scoped_ptr.hpp
+++ b/include/boost/scoped_ptr.hpp
@@ -0,0 +1,16 @@
+#ifndef BOOST_SCOPED_PTR_HPP_INCLUDED
+#define BOOST_SCOPED_PTR_HPP_INCLUDED
+
+//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+//  Copyright (c) 2001, 2002 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  http://www.boost.org/libs/smart_ptr/scoped_ptr.htm
+//
+
+#include <boost/smart_ptr/scoped_ptr.hpp>
+
+#endif // #ifndef BOOST_SCOPED_PTR_HPP_INCLUDED
--- a/include/boost/shared_array.hpp
+++ b/include/boost/shared_array.hpp
@@ -0,0 +1,19 @@
+#ifndef BOOST_SHARED_ARRAY_HPP_INCLUDED
+#define BOOST_SHARED_ARRAY_HPP_INCLUDED
+
+//
+//  shared_array.hpp
+//
+//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+//  Copyright (c) 2001, 2002 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/smart_ptr/shared_array.htm for documentation.
+//
+
+#include <boost/smart_ptr/shared_array.hpp>
+
+#endif  // #ifndef BOOST_SHARED_ARRAY_HPP_INCLUDED
--- a/include/boost/shared_ptr.hpp
+++ b/include/boost/shared_ptr.hpp
@@ -0,0 +1,19 @@
+#ifndef BOOST_SHARED_PTR_HPP_INCLUDED
+#define BOOST_SHARED_PTR_HPP_INCLUDED
+
+//
+//  shared_ptr.hpp
+//
+//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+//  Copyright (c) 2001-2008 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/smart_ptr/shared_ptr.htm for documentation.
+//
+
+#include <boost/smart_ptr/shared_ptr.hpp>
+
+#endif  // #ifndef BOOST_SHARED_PTR_HPP_INCLUDED
--- a/include/boost/smart_ptr.hpp
+++ b/include/boost/smart_ptr.hpp
@@ -1,369 +1,31 @@
-//  Boost smart_ptr.hpp header file  -----------------------------------------//
+#ifndef BOOST_SMART_PTR_HPP_INCLUDED
+#define BOOST_SMART_PTR_HPP_INCLUDED

-//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999. Permission to copy,
-//  use, modify, sell and distribute this software is granted provided this
-//  copyright notice appears in all copies. This software is provided "as is"
-//  without express or implied warranty, and with no claim as to its
-//  suitability for any purpose.
+//
+//  smart_ptr.hpp
+//
+//  For convenience, this header includes the rest of the smart
+//  pointer library headers.
+//
+//  Copyright (c) 2003 Peter Dimov  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+//  http://www.boost.org/libs/smart_ptr/smart_ptr.htm
+//

-//  See http://www.boost.org for most recent version including documentation.
+#include <boost/config.hpp>

-//  Revision History
-//  22 Jun 00  Remove #if continuations to fix GCC 2.95.2 problem (Beman Dawes)
-//   1 Feb 00  Additional shared_ptr BOOST_NO_MEMBER_TEMPLATES workarounds
-//             (Dave Abrahams)
-//  31 Dec 99  Condition tightened for no member template friend workaround
-//             (Dave Abrahams)
-//  30 Dec 99  Moved BOOST_NMEMBER_TEMPLATES compatibility code to config.hpp
-//             (Dave Abrahams)
-//  30 Nov 99  added operator ==, operator !=, and std::swap and std::less
-//             specializations for shared types (Darin Adler)
-//  11 Oct 99  replaced op[](int) with op[](std::size_t) (Ed Brey, Valentin
-//             Bonnard), added shared_ptr workaround for no member template
-//             friends (Matthew Langston)
-//  25 Sep 99  added shared_ptr::swap and shared_array::swap (Luis Coelho).
-//  20 Jul 99  changed name to smart_ptr.hpp, #include <boost/config.hpp>,
-//             #include <boost/utility.hpp> and use boost::noncopyable
-//  17 May 99  remove scoped_array and shared_array operator*() as
-//             unnecessary (Beman Dawes)
-//  14 May 99  reorder code so no effects when bad_alloc thrown (Abrahams/Dawes)
-//  13 May 99  remove certain throw() specifiers to avoid generated try/catch
-//             code cost (Beman Dawes)
-//  11 May 99  get() added, conversion to T* placed in macro guard (Valentin
-//             Bonnard, Dave Abrahams, and others argued for elimination
-//             of the automatic conversion)
-//  28 Apr 99  #include <memory> fix (Valentin Bonnard)
-//  28 Apr 99  rename transfer() to share() for clarity (Dave Abrahams)
-//  28 Apr 99  remove unsafe shared_array template conversions(Valentin Bonnard)
-//  28 Apr 99  p(r) changed to p(r.px) for clarity (Dave Abrahams)
-//  21 Apr 99  reset() self assignment fix (Valentin Bonnard)
-//  21 Apr 99  dispose() provided to improve clarity (Valentin Bonnard)
-//  27 Apr 99  leak when new throws fixes (Dave Abrahams)
-//  21 Oct 98  initial Version (Greg Colvin/Beman Dawes)
+#include <boost/scoped_ptr.hpp>
+#include <boost/scoped_array.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/shared_array.hpp>

-#ifndef BOOST_SMART_PTR_HPP
-#define BOOST_SMART_PTR_HPP
-
-#include <boost/config.hpp>   // for broken compiler workarounds
-#include <cstddef>            // for std::size_t
-#include <memory>             // for std::auto_ptr
-#include <algorithm>          // for std::swap
-#include <boost/utility.hpp>  // for boost::noncopyable
-#include <functional>         // for std::less
-
-namespace boost {
-
-//  scoped_ptr  --------------------------------------------------------------//
-
-//  scoped_ptr mimics a built-in pointer except that it guarantees deletion
-//  of the object pointed to, either on destruction of the scoped_ptr or via
-//  an explicit reset().  scoped_ptr is a simple solution for simple needs;
-//  see shared_ptr (below) or std::auto_ptr if your needs are more complex.
-
-template<typename T> class scoped_ptr : noncopyable {
-
-  T* ptr;
-
- public:
-  typedef T element_type;
-
-  explicit scoped_ptr( T* p=0 ) throw() : ptr(p) {}
-  ~scoped_ptr()                 { delete ptr; }
-
-  void reset( T* p=0 )          { if ( ptr != p ) { delete ptr; ptr = p; } }
-  T& operator*() const throw()  { return *ptr; }
-  T* operator->() const throw() { return ptr; }
-  T* get() const throw()        { return ptr; }
-#ifdef BOOST_SMART_PTR_CONVERSION
-  // get() is safer! Define BOOST_SMART_PTR_CONVERSION at your own risk!
-  operator T*() const throw()   { return ptr; } 
-#endif
-  };  // scoped_ptr
-
-//  scoped_array  ------------------------------------------------------------//
-
-//  scoped_array extends scoped_ptr to arrays. Deletion of the array pointed to
-//  is guaranteed, either on destruction of the scoped_array or via an explicit
-//  reset(). See shared_array or std::vector if your needs are more complex.
-
-template<typename T> class scoped_array : noncopyable {
-
-  T* ptr;
-
- public:
-  typedef T element_type;
-
-  explicit scoped_array( T* p=0 ) throw() : ptr(p) {}
-  ~scoped_array()                    { delete [] ptr; }
-
-  void reset( T* p=0 )               { if ( ptr != p ) {delete [] ptr; ptr=p;} }
-
-  T* get() const throw()             { return ptr; }
-#ifdef BOOST_SMART_PTR_CONVERSION
-  // get() is safer! Define BOOST_SMART_PTR_CONVERSION at your own risk!
-  operator T*() const throw()        { return ptr; }
-#else 
-  T& operator[](std::size_t i) const throw() { return ptr[i]; }
-#endif
-  };  // scoped_array
-
-//  shared_ptr  --------------------------------------------------------------//
-
-//  An enhanced relative of scoped_ptr with reference counted copy semantics.
-//  The object pointed to is deleted when the last shared_ptr pointing to it
-//  is destroyed or reset.
-
-template<typename T> class shared_ptr {
-  public:
-   typedef T element_type;
-
-   explicit shared_ptr(T* p =0) : px(p) {
-      try { pn = new long(1); }  // fix: prevent leak if new throws
-      catch (...) { delete p; throw; } 
-   }
-
-   shared_ptr(const shared_ptr& r) throw() : px(r.px) { ++*(pn = r.pn); }
-
-   ~shared_ptr() { dispose(); }
-
-   shared_ptr& operator=(const shared_ptr& r) {
-      share(r.px,r.pn);
-      return *this;
-   }
-
-#if !defined( BOOST_NO_MEMBER_TEMPLATES )
-   template<typename Y>
-      shared_ptr(const shared_ptr<Y>& r) throw() : px(r.px) { 
-         ++*(pn = r.pn); 
-      }
-
-   template<typename Y>
-      shared_ptr(std::auto_ptr<Y>& r) { 
-         pn = new long(1); // may throw
-         px = r.release(); // fix: moved here to stop leak if new throws
-      } 
-
-   template<typename Y>
-      shared_ptr& operator=(const shared_ptr<Y>& r) { 
-         share(r.px,r.pn);
-         return *this;
-      }
-
-   template<typename Y>
-      shared_ptr& operator=(std::auto_ptr<Y>& r) {
-         // code choice driven by guarantee of "no effect if new throws"
-         if (*pn == 1) { delete px; }
-         else { // allocate new reference counter
-           long * tmp = new long(1); // may throw
-           --*pn; // only decrement once danger of new throwing is past
-           pn = tmp;
-         } // allocate new reference counter
-         px = r.release(); // fix: moved here so doesn't leak if new throws 
-         return *this;
-      }
-#else
-      shared_ptr(std::auto_ptr<T>& r) { 
-         pn = new long(1); // may throw
-         px = r.release(); // fix: moved here to stop leak if new throws
-      } 
-
-      shared_ptr& operator=(std::auto_ptr<T>& r) {
-         // code choice driven by guarantee of "no effect if new throws"
-         if (*pn == 1) { delete px; }
-         else { // allocate new reference counter
-           long * tmp = new long(1); // may throw
-           --*pn; // only decrement once danger of new throwing is past
-           pn = tmp;
-         } // allocate new reference counter
-         px = r.release(); // fix: moved here so doesn't leak if new throws 
-         return *this;
-      }
+#if !defined(BOOST_NO_MEMBER_TEMPLATES) || defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+# include <boost/weak_ptr.hpp>
+# include <boost/intrusive_ptr.hpp>
+# include <boost/enable_shared_from_this.hpp>
+# include <boost/make_shared.hpp>
 #endif

-   void reset(T* p=0) {
-      if ( px == p ) return;  // fix: self-assignment safe
-      if (--*pn == 0) { delete px; }
-      else { // allocate new reference counter
-        try { pn = new long; }  // fix: prevent leak if new throws
-        catch (...) {
-          ++*pn;  // undo effect of --*pn above to meet effects guarantee 
-          delete p;
-          throw;
-        } // catch
-      } // allocate new reference counter
-      *pn = 1;
-      px = p;
-   } // reset
-
-   T& operator*() const throw()  { return *px; }
-   T* operator->() const throw() { return px; }
-   T* get() const throw()        { return px; }
- #ifdef BOOST_SMART_PTR_CONVERSION
-   // get() is safer! Define BOOST_SMART_PTR_CONVERSION at your own risk!
-   operator T*() const throw()   { return px; } 
- #endif
-
-   long use_count() const throw(){ return *pn; }
-   bool unique() const throw()   { return *pn == 1; }
-
-   void swap(shared_ptr<T>& other) throw()
-     { std::swap(px,other.px); std::swap(pn,other.pn); }
-
-// Tasteless as this may seem, making all members public allows member templates
-// to work in the absence of member template friends. (Matthew Langston)
-// Don't split this line into two; that causes problems for some GCC 2.95.2 builds
-#if defined(BOOST_NO_MEMBER_TEMPLATES) || !defined( BOOST_NO_MEMBER_TEMPLATE_FRIENDS )
-   private:
-#endif
-
-   T*     px;     // contained pointer
-   long*  pn;     // ptr to reference counter
-
-// Don't split this line into two; that causes problems for some GCC 2.95.2 builds
-#if !defined( BOOST_NO_MEMBER_TEMPLATES ) && !defined( BOOST_NO_MEMBER_TEMPLATE_FRIENDS )
-   template<typename Y> friend class shared_ptr;
-#endif
-
-   void dispose() { if (--*pn == 0) { delete px; delete pn; } }
-
-   void share(T* rpx, long* rpn) {
-      if (pn != rpn) {
-         dispose();
-         px = rpx;
-         ++*(pn = rpn);
-      }
-   } // share
-};  // shared_ptr
-
-template<typename T, typename U>
-  inline bool operator==(const shared_ptr<T>& a, const shared_ptr<U>& b)
-    { return a.get() == b.get(); }
-
-template<typename T, typename U>
-  inline bool operator!=(const shared_ptr<T>& a, const shared_ptr<U>& b)
-    { return a.get() != b.get(); }
-
-//  shared_array  ------------------------------------------------------------//
-
-//  shared_array extends shared_ptr to arrays.
-//  The array pointed to is deleted when the last shared_array pointing to it
-//  is destroyed or reset.
-
-template<typename T> class shared_array {
-  public:
-   typedef T element_type;
-
-   explicit shared_array(T* p =0) : px(p) {
-      try { pn = new long(1); }  // fix: prevent leak if new throws
-      catch (...) { delete [] p; throw; } 
-   }
-
-   shared_array(const shared_array& r) throw() : px(r.px) { ++*(pn = r.pn); }
-
-   ~shared_array() { dispose(); }
-
-   shared_array& operator=(const shared_array& r) {
-      if (pn != r.pn) {
-         dispose();
-         px = r.px;
-         ++*(pn = r.pn);
-      }
-      return *this;
-   } // operator=
-
-   void reset(T* p=0) {
-      if ( px == p ) return;  // fix: self-assignment safe
-      if (--*pn == 0) { delete [] px; }
-      else { // allocate new reference counter
-        try { pn = new long; }  // fix: prevent leak if new throws
-        catch (...) {
-          ++*pn;  // undo effect of --*pn above to meet effects guarantee 
-          delete [] p;
-          throw;
-        } // catch
-      } // allocate new reference counter
-      *pn = 1;
-      px = p;
-   } // reset
-
-   T* get() const throw()             { return px; }
- #ifdef BOOST_SMART_PTR_CONVERSION
-   // get() is safer! Define BOOST_SMART_PTR_CONVERSION at your own risk!
-   operator T*() const throw()        { return px; }
- #else 
-   T& operator[](std::size_t i) const throw() { return px[i]; }
- #endif
-
-   long use_count() const throw()     { return *pn; }
-   bool unique() const throw()        { return *pn == 1; }
-
-   void swap(shared_array<T>& other) throw()
-     { std::swap(px,other.px); std::swap(pn,other.pn); }
-
-  private:
-
-   T*     px;     // contained pointer
-   long*  pn;     // ptr to reference counter
-
-   void dispose() { if (--*pn == 0) { delete [] px; delete pn; } }
-
-};  // shared_array
-
-template<typename T>
-  inline bool operator==(const shared_array<T>& a, const shared_array<T>& b)
-    { return a.get() == b.get(); }
-
-template<typename T>
-  inline bool operator!=(const shared_array<T>& a, const shared_array<T>& b)
-    { return a.get() != b.get(); }
-
-} // namespace boost
-
-//  specializations for things in namespace std  -----------------------------//
-
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-
-namespace std {
-
-// Specialize std::swap to use the fast, non-throwing swap that's provided
-// as a member function instead of using the default algorithm which creates
-// a temporary and uses assignment.
-
-template<typename T>
-  inline void swap(boost::shared_ptr<T>& a, boost::shared_ptr<T>& b)
-    { a.swap(b); }
-
-template<typename T>
-  inline void swap(boost::shared_array<T>& a, boost::shared_array<T>& b)
-    { a.swap(b); }
-
-// Specialize std::less so we can use shared pointers and arrays as keys in
-// associative collections.
-
-// It's still a controversial question whether this is better than supplying
-// a full range of comparison operators (<, >, <=, >=).
-
-template<typename T>
-  struct less< boost::shared_ptr<T> >
-    : binary_function<boost::shared_ptr<T>, boost::shared_ptr<T>, bool>
-  {
-    bool operator()(const boost::shared_ptr<T>& a,
-        const boost::shared_ptr<T>& b) const
-      { return less<T*>()(a.get(),b.get()); }
-  };
-
-template<typename T>
-  struct less< boost::shared_array<T> >
-    : binary_function<boost::shared_array<T>, boost::shared_array<T>, bool>
-  {
-    bool operator()(const boost::shared_array<T>& a,
-        const boost::shared_array<T>& b) const
-      { return less<T*>()(a.get(),b.get()); }
-  };
-
-} // namespace std
-
-#endif  // ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-
-#endif  // BOOST_SMART_PTR_HPP
-
+#endif // #ifndef BOOST_SMART_PTR_HPP_INCLUDED
--- a/include/boost/smart_ptr/allocate_shared_array.hpp
+++ b/include/boost/smart_ptr/allocate_shared_array.hpp
@@ -0,0 +1,250 @@
+/*
+ * Copyright (c) 2012 Glen Joseph Fernandes
+ * glenfe at live dot com
+ *
+ * Distributed under the Boost Software License,
+ * Version 1.0. (See accompanying file LICENSE_1_0.txt
+ * or copy at http://boost.org/LICENSE_1_0.txt)
+ */
+#ifndef BOOST_SMART_PTR_ALLOCATE_SHARED_ARRAY_HPP
+#define BOOST_SMART_PTR_ALLOCATE_SHARED_ARRAY_HPP
+
+#include <boost/smart_ptr/shared_ptr.hpp>
+#include <boost/smart_ptr/detail/allocate_array_helper.hpp>
+#include <boost/smart_ptr/detail/array_deleter.hpp>
+#include <boost/smart_ptr/detail/array_traits.hpp>
+#include <boost/smart_ptr/detail/sp_if_array.hpp>
+#if !defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST)
+#include <initializer_list>
+#endif
+
+namespace boost {
+    template<typename T, typename A>
+    inline typename boost::detail::sp_if_array<T>::type
+    allocate_shared(const A& allocator, std::size_t size) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        T1* p1 = 0;
+        T2* p2 = 0;
+        std::size_t n1 = size * boost::detail::array_total<T1>::size;
+        boost::detail::allocate_array_helper<A, T2[]> a1(allocator, n1, &p2);
+        boost::detail::array_deleter<T2[]> d1(n1);
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init(p2);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template<typename T, typename A, typename... Args>
+    inline typename boost::detail::sp_if_array<T>::type
+    allocate_shared(const A& allocator, std::size_t size, Args&&... args) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        T1* p1 = 0;
+        T2* p2 = 0;
+        std::size_t n1 = size * boost::detail::array_total<T1>::size;
+        boost::detail::allocate_array_helper<A, T2[]> a1(allocator, n1, &p2);
+        boost::detail::array_deleter<T2[]> d1(n1);
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init(p2, boost::detail::sp_forward<Args>(args)...);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+    template<typename T, typename A, typename... Args>
+    inline typename boost::detail::sp_if_size_array<T>::type
+    allocate_shared(const A& allocator, Args&&... args) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        enum {
+            N = boost::detail::array_total<T>::size
+        };
+        T1* p1 = 0;
+        T2* p2 = 0;
+        boost::detail::allocate_array_helper<A, T2[N]> a1(allocator, &p2);
+        boost::detail::array_deleter<T2[N]> d1;
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[N]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init(p2, boost::detail::sp_forward<Args>(args)...);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+#endif
+#if !defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX)
+    template<typename T, typename A>
+    inline typename boost::detail::sp_if_size_array<T>::type
+    allocate_shared(const A& allocator, const T& list) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        typedef const T2 T3;
+        enum {
+            N = boost::detail::array_total<T>::size
+        };
+        T1* p1 = 0;
+        T2* p2 = 0;
+        T3* p3 = 0;
+        boost::detail::allocate_array_helper<A, T2[N]> a1(allocator, &p2);
+        boost::detail::array_deleter<T2[N]> d1;
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[N]>* D2;
+        p3 = reinterpret_cast<T3*>(list);
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init_list(p2, p3);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+    template<typename T, typename A>
+    inline typename boost::detail::sp_if_array<T>::type
+    allocate_shared(const A& allocator, std::size_t size,
+        const typename boost::detail::array_inner<T>::type& list) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        typedef const T2 T3;
+        enum {
+            M = boost::detail::array_total<T1>::size
+        };
+        T1* p1 = 0;
+        T2* p2 = 0;
+        T3* p3 = 0;
+        std::size_t n1 = M * size;
+        boost::detail::allocate_array_helper<A, T2[]> a1(allocator, n1, &p2);
+        boost::detail::array_deleter<T2[]> d1(n1);
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[]>* D2;
+        p3 = reinterpret_cast<T3*>(list);
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->template init_list<M>(p2, p3);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+    template<typename T, typename A>
+    inline typename boost::detail::sp_if_size_array<T>::type
+    allocate_shared(const A& allocator,
+        const typename boost::detail::array_inner<T>::type& list) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        typedef const T2 T3;
+        enum {
+            M = boost::detail::array_total<T1>::size,
+            N = boost::detail::array_total<T>::size
+        };
+        T1* p1 = 0;
+        T2* p2 = 0;
+        T3* p3 = 0;
+        boost::detail::allocate_array_helper<A, T2[N]> a1(allocator, &p2);
+        boost::detail::array_deleter<T2[N]> d1;
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[N]>* D2;
+        p3 = reinterpret_cast<T3*>(list);
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->template init_list<M>(p2, p3);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+#if !defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST)
+    template<typename T, typename A>
+    inline typename boost::detail::sp_if_array<T>::type
+    allocate_shared(const A& allocator,
+        std::initializer_list<typename boost::detail::array_inner<T>::type> list) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        typedef const T2 T3;
+        T1* p1 = 0;
+        T2* p2 = 0;
+        T3* p3 = 0;
+        std::size_t n1 = list.size() * boost::detail::array_total<T1>::size;
+        boost::detail::allocate_array_helper<A, T2[]> a1(allocator, n1, &p2);
+        boost::detail::array_deleter<T2[]> d1(n1);
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[]>* D2;
+        p3 = reinterpret_cast<T3*>(list.begin());
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init_list(p2, p3);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+#endif
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template<typename T, typename A>
+    inline typename boost::detail::sp_if_array<T>::type
+    allocate_shared(const A& allocator, std::size_t size,
+        typename boost::detail::array_base<T>::type&& value) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        T1* p1 = 0;
+        T2* p2 = 0;
+        std::size_t n1 = size * boost::detail::array_total<T1>::size;
+        boost::detail::allocate_array_helper<A, T2[]> a1(allocator, n1, &p2);
+        boost::detail::array_deleter<T2[]> d1(n1);
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init(p2, boost::detail::sp_forward<T2>(value));
+        return boost::shared_ptr<T>(s1, p1);
+    }
+    template<typename T, typename A>
+    inline typename boost::detail::sp_if_size_array<T>::type
+    allocate_shared(const A& allocator,
+        typename boost::detail::array_base<T>::type&& value) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        enum {
+            N = boost::detail::array_total<T>::size
+        };
+        T1* p1 = 0;
+        T2* p2 = 0;
+        boost::detail::allocate_array_helper<A, T2[N]> a1(allocator, &p2);
+        boost::detail::array_deleter<T2[N]> d1;
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[N]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init(p2, boost::detail::sp_forward<T2>(value));
+        return boost::shared_ptr<T>(s1, p1);
+    }
+#endif
+#endif
+    template<typename T, typename A>
+    inline typename boost::detail::sp_if_array<T>::type
+    allocate_shared_noinit(const A& allocator, std::size_t size) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        T1* p1 = 0;
+        T2* p2 = 0;
+        std::size_t n1 = size * boost::detail::array_total<T1>::size;
+        boost::detail::allocate_array_helper<A, T2[]> a1(allocator, n1, &p2);
+        boost::detail::array_deleter<T2[]> d1(n1);
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->noinit(p2);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+    template<typename T, typename A>
+    inline typename boost::detail::sp_if_size_array<T>::type
+    allocate_shared_noinit(const A& allocator) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        enum {
+            N = boost::detail::array_total<T>::size
+        };
+        T1* p1 = 0;
+        T2* p2 = 0;
+        boost::detail::allocate_array_helper<A, T2[N]> a1(allocator, &p2);
+        boost::detail::array_deleter<T2[N]> d1;
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[N]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->noinit(p2);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+}
+
+#endif
--- a/include/boost/smart_ptr/bad_weak_ptr.hpp
+++ b/include/boost/smart_ptr/bad_weak_ptr.hpp
@@ -0,0 +1,59 @@
+#ifndef BOOST_SMART_PTR_BAD_WEAK_PTR_HPP_INCLUDED
+#define BOOST_SMART_PTR_BAD_WEAK_PTR_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  boost/smart_ptr/bad_weak_ptr.hpp
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <exception>
+
+#ifdef __BORLANDC__
+# pragma warn -8026     // Functions with excep. spec. are not expanded inline
+#endif
+
+namespace boost
+{
+
+// The standard library that comes with Borland C++ 5.5.1, 5.6.4
+// defines std::exception and its members as having C calling
+// convention (-pc). When the definition of bad_weak_ptr
+// is compiled with -ps, the compiler issues an error.
+// Hence, the temporary #pragma option -pc below.
+
+#if defined(__BORLANDC__) && __BORLANDC__ <= 0x564
+# pragma option push -pc
+#endif
+
+class bad_weak_ptr: public std::exception
+{
+public:
+
+    virtual char const * what() const throw()
+    {
+        return "tr1::bad_weak_ptr";
+    }
+};
+
+#if defined(__BORLANDC__) && __BORLANDC__ <= 0x564
+# pragma option pop
+#endif
+
+} // namespace boost
+
+#ifdef __BORLANDC__
+# pragma warn .8026     // Functions with excep. spec. are not expanded inline
+#endif
+
+#endif  // #ifndef BOOST_SMART_PTR_BAD_WEAK_PTR_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/allocate_array_helper.hpp
+++ b/include/boost/smart_ptr/detail/allocate_array_helper.hpp
@@ -0,0 +1,169 @@
+/*
+ * Copyright (c) 2012 Glen Joseph Fernandes 
+ * glenfe at live dot com
+ *
+ * Distributed under the Boost Software License, 
+ * Version 1.0. (See accompanying file LICENSE_1_0.txt 
+ * or copy at http://boost.org/LICENSE_1_0.txt)
+ */
+#ifndef BOOST_SMART_PTR_DETAIL_ALLOCATE_ARRAY_HELPER_HPP
+#define BOOST_SMART_PTR_DETAIL_ALLOCATE_ARRAY_HELPER_HPP
+
+#include <boost/type_traits/alignment_of.hpp>
+
+namespace boost {
+    namespace detail {
+        template<typename A, typename T, typename Y = char>
+        class allocate_array_helper;
+        template<typename A, typename T, typename Y>
+        class allocate_array_helper<A, T[], Y> {
+            template<typename A9, typename T9, typename Y9>
+            friend class allocate_array_helper;
+            typedef typename A::template rebind<Y>   ::other A2;
+            typedef typename A::template rebind<char>::other A3;
+        public:
+            typedef typename A2::value_type      value_type;
+            typedef typename A2::pointer         pointer;
+            typedef typename A2::const_pointer   const_pointer;
+            typedef typename A2::reference       reference;
+            typedef typename A2::const_reference const_reference;
+            typedef typename A2::size_type       size_type;
+            typedef typename A2::difference_type difference_type;
+            template<typename U>
+            struct rebind {
+                typedef allocate_array_helper<A, T[], U> other;
+            };
+            allocate_array_helper(const A& allocator_, std::size_t size_, T** data_)
+                : allocator(allocator_),
+                  size(sizeof(T) * size_),
+                  data(data_) {
+            }
+            template<class U>
+            allocate_array_helper(const allocate_array_helper<A, T[], U>& other) 
+                : allocator(other.allocator),
+                  size(other.size),
+                  data(other.data) {
+            }
+            pointer address(reference value) const {
+                return allocator.address(value);
+            }
+            const_pointer address(const_reference value) const {
+                return allocator.address(value);
+            }
+            size_type max_size() const {
+                return allocator.max_size();
+            }
+            pointer allocate(size_type count, const void* value = 0) {
+                std::size_t a1 = boost::alignment_of<T>::value;
+                std::size_t n1 = count * sizeof(Y) + a1 - 1;
+                char*  p1 = A3(allocator).allocate(n1 + size, value);
+                char*  p2 = p1 + n1;
+                while (std::size_t(p2) % a1 != 0) {
+                    p2--;
+                }
+                *data = reinterpret_cast<T*>(p2);
+                return  reinterpret_cast<Y*>(p1);
+            }
+            void deallocate(pointer memory, size_type count) {
+                std::size_t a1 = boost::alignment_of<T>::value;
+                std::size_t n1 = count * sizeof(Y) + a1 - 1;
+                char*  p1 = reinterpret_cast<char*>(memory);
+                A3(allocator).deallocate(p1, n1 + size);
+            }
+            void construct(pointer memory, const Y& value) {
+                allocator.construct(memory, value);
+            }
+            void destroy(pointer memory) {
+                allocator.destroy(memory);
+            }
+            template<typename U>
+            bool operator==(const allocate_array_helper<A, T[], U>& other) const {
+                return allocator == other.allocator;
+            }
+            template<typename U>
+            bool operator!=(const allocate_array_helper<A, T[], U>& other) const {
+                return !(*this == other); 
+            }
+        private:
+            A2 allocator;
+            std::size_t size;
+            T** data;
+        };
+        template<typename A, typename T, std::size_t N, typename Y>
+        class allocate_array_helper<A, T[N], Y> {
+            template<typename A9, typename T9, typename Y9>
+            friend class allocate_array_helper;
+            typedef typename A::template rebind<Y>   ::other A2;
+            typedef typename A::template rebind<char>::other A3;
+        public:
+            typedef typename A2::value_type      value_type;
+            typedef typename A2::pointer         pointer;
+            typedef typename A2::const_pointer   const_pointer;
+            typedef typename A2::reference       reference;
+            typedef typename A2::const_reference const_reference;
+            typedef typename A2::size_type       size_type;
+            typedef typename A2::difference_type difference_type;
+            template<typename U>
+            struct rebind {
+                typedef allocate_array_helper<A, T[N], U> other;
+            };
+            allocate_array_helper(const A& allocator_, T** data_)
+                : allocator(allocator_),
+                  data(data_) {
+            }
+            template<class U>
+            allocate_array_helper(const allocate_array_helper<A, T[N], U>& other) 
+                : allocator(other.allocator),
+                  data(other.data) {
+            }
+            pointer address(reference value) const {
+                return allocator.address(value);
+            }
+            const_pointer address(const_reference value) const {
+                return allocator.address(value);
+            }
+            size_type max_size() const {
+                return allocator.max_size();
+            }
+            pointer allocate(size_type count, const void* value = 0) {
+                std::size_t a1 = boost::alignment_of<T>::value;
+                std::size_t n1 = count * sizeof(Y) + a1 - 1;
+                char*  p1 = A3(allocator).allocate(n1 + N1, value);
+                char*  p2 = p1 + n1;
+                while (std::size_t(p2) % a1 != 0) {
+                    p2--;
+                }
+                *data = reinterpret_cast<T*>(p2);
+                return  reinterpret_cast<Y*>(p1);
+            }
+            void deallocate(pointer memory, size_type count) {
+                std::size_t a1 = boost::alignment_of<T>::value;
+                std::size_t n1 = count * sizeof(Y) + a1 - 1;
+                char*  p1 = reinterpret_cast<char*>(memory);
+                A3(allocator).deallocate(p1, n1 + N1);
+            }
+            void construct(pointer memory, const Y& value) {
+                allocator.construct(memory, value);
+            }
+            void destroy(pointer memory) {
+                allocator.destroy(memory);
+            }
+            template<typename U>
+            bool operator==(const allocate_array_helper<A, T[N], U>& other) const {
+                return allocator == other.allocator;
+            }
+            template<typename U>
+            bool operator!=(const allocate_array_helper<A, T[N], U>& other) const {
+                return !(*this == other); 
+            }
+        private:
+            enum {
+                N1 = N * sizeof(T)
+            };
+            A2 allocator;
+            T** data;
+        };
+    }
+}
+
+#endif
--- a/include/boost/smart_ptr/detail/array_deleter.hpp
+++ b/include/boost/smart_ptr/detail/array_deleter.hpp
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2012 Glen Joseph Fernandes
+ * glenfe at live dot com
+ *
+ * Distributed under the Boost Software License,
+ * Version 1.0. (See accompanying file LICENSE_1_0.txt
+ * or copy at http://boost.org/LICENSE_1_0.txt)
+ */
+#ifndef BOOST_SMART_PTR_DETAIL_ARRAY_DELETER_HPP
+#define BOOST_SMART_PTR_DETAIL_ARRAY_DELETER_HPP
+
+#include <boost/smart_ptr/detail/array_utility.hpp>
+#include <boost/smart_ptr/detail/sp_forward.hpp>
+
+namespace boost {
+    namespace detail {
+        template<typename T>
+        class array_deleter;
+        template<typename T>
+        class array_deleter<T[]> {
+        public:
+            array_deleter(std::size_t size_)
+                : size(size_),
+                  object(0) {
+            }
+            ~array_deleter() {
+                if (object) {
+                    array_destroy(object, size);
+                }
+            }
+            void init(T* memory) {
+                array_init(memory, size);
+                object = memory;
+            }
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+            void init(T* memory, T&& value) {
+                array_init_value(memory, size, sp_forward<T>(value));
+                object = memory;                
+            }
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+            template<typename... Args>
+            void init(T* memory, Args&&... args) {
+                array_init_args(memory, size, sp_forward<Args>(args)...);
+                object = memory;
+            }
+#endif
+#endif
+            void init_list(T* memory, const T* list) {
+                array_init_list(memory, size, list);
+                object = memory;
+            }
+            template<std::size_t M>
+            void init_list(T* memory, const T* list) {
+                array_init_list<T, M>(memory, size, list);
+                object = memory;
+            }
+            void noinit(T* memory) {
+                array_noinit(memory, size);
+                object = memory;
+            }
+            void operator()(const void*) {
+                if (object) {
+                    array_destroy(object, size);
+                    object = 0;
+                }
+            }
+        private:
+            std::size_t size;
+            T* object;
+        };
+        template<typename T, std::size_t N>
+        class array_deleter<T[N]> {
+        public:
+            array_deleter()
+                : object(0) {
+            }
+            ~array_deleter() {
+                if (object) {
+                    array_destroy(object, N);
+                }
+            }
+            void init(T* memory) {
+                array_init(memory, N);
+                object = memory;
+            }
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+            void init(T* memory, T&& value) {
+                array_init_value(memory, N, sp_forward<T>(value));
+                object = memory;                
+            }
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+            template<typename... Args>
+            void init(T* memory, Args&&... args) {
+                array_init_args(memory, N, sp_forward<Args>(args)...);
+                object = memory;
+            }
+#endif
+#endif
+            void init_list(T* memory, const T* list) {
+                array_init_list(memory, N, list);
+                object = memory;
+            }
+            template<std::size_t M>
+            void init_list(T* memory, const T* list) {
+                array_init_list<T, M>(memory, N, list);
+                object = memory;
+            }
+            void noinit(T* memory) {
+                array_noinit(memory, N);
+                object = memory;
+            }
+            void operator()(const void*) {
+                if (object) {
+                    array_destroy(object, N);
+                    object = 0;
+                }
+            }
+        private:
+            T* object;
+        };
+    }
+}
+
+#endif
--- a/include/boost/smart_ptr/detail/array_traits.hpp
+++ b/include/boost/smart_ptr/detail/array_traits.hpp
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2012 Glen Joseph Fernandes 
+ * glenfe at live dot com
+ *
+ * Distributed under the Boost Software License, 
+ * Version 1.0. (See accompanying file LICENSE_1_0.txt 
+ * or copy at http://boost.org/LICENSE_1_0.txt)
+ */
+#ifndef BOOST_SMART_PTR_DETAIL_ARRAY_TRAITS_HPP
+#define BOOST_SMART_PTR_DETAIL_ARRAY_TRAITS_HPP
+
+#include <boost/type_traits/remove_cv.hpp>
+
+namespace boost {
+    namespace detail {
+        template<typename T>
+        struct array_base {
+            typedef typename boost::remove_cv<T>::type type;
+        };
+        template<typename T>
+        struct array_base<T[]> {
+            typedef typename array_base<T>::type type;
+        };
+        template<typename T, std::size_t N>
+        struct array_base<T[N]> {
+            typedef typename array_base<T>::type type;
+        };
+        template<typename T>
+        struct array_total {
+            enum {
+                size = 1
+            };
+        };
+        template<typename T, std::size_t N>
+        struct array_total<T[N]> {
+            enum {
+                size = N * array_total<T>::size
+            };
+        };
+        template<typename T> 
+        struct array_inner;
+        template<typename T>
+        struct array_inner<T[]> {
+            typedef T type;
+        };
+        template<typename T, std::size_t N>
+        struct array_inner<T[N]> {
+            typedef T type;
+        };
+    }
+}
+
+#endif
--- a/include/boost/smart_ptr/detail/array_utility.hpp
+++ b/include/boost/smart_ptr/detail/array_utility.hpp
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2012 Glen Joseph Fernandes 
+ * glenfe at live dot com
+ *
+ * Distributed under the Boost Software License, 
+ * Version 1.0. (See accompanying file LICENSE_1_0.txt 
+ * or copy at http://boost.org/LICENSE_1_0.txt)
+ */
+#ifndef BOOST_SMART_PTR_DETAIL_ARRAY_UTILITY_HPP
+#define BOOST_SMART_PTR_DETAIL_ARRAY_UTILITY_HPP
+
+#include <boost/config.hpp>
+#include <boost/type_traits/has_trivial_constructor.hpp>
+#include <boost/type_traits/has_trivial_destructor.hpp>
+
+namespace boost {
+    namespace detail {
+        template<typename T>
+        inline void array_destroy(T*, std::size_t, boost::true_type) {
+        }
+        template<typename T>
+        inline void array_destroy(T* memory, std::size_t size, boost::false_type) {
+            for (std::size_t i = size; i > 0; ) {
+                memory[--i].~T();
+            }
+        }
+        template<typename T>
+        inline void array_destroy(T* memory, std::size_t size) {
+            boost::has_trivial_destructor<T> type;
+            array_destroy(memory, size, type);
+        }
+        template<typename T>
+        inline void array_init(T* memory, std::size_t size, boost::true_type) {
+            for (std::size_t i = 0; i < size; i++) {
+                memory[i] = T();
+            }
+        }
+        template<typename T>
+        inline void array_init(T* memory, std::size_t size, boost::false_type) {
+#if !defined(BOOST_NO_EXCEPTIONS)
+            std::size_t i = 0;
+            try {
+                for (; i < size; i++) {
+                    void* p1 = memory + i;
+                    ::new(p1) T();
+                }
+            } catch (...) {
+                array_destroy(memory, i);
+                throw;
+            }
+#else
+            for (std::size_t i = 0; i < size; i++) {
+                void* p1 = memory + i;
+                ::new(p1) T();
+            }
+#endif
+        }
+        template<typename T>
+        inline void array_init(T* memory, std::size_t size) {
+            boost::has_trivial_default_constructor<T> type;            
+            array_init(memory, size, type);
+        }
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+        template<typename T>
+        inline void array_init_value(T* memory, std::size_t size, T&& value) {
+#if !defined(BOOST_NO_EXCEPTIONS)
+            std::size_t i = 0;
+            try {
+                for (; i < size; i++) {
+                    void* p1 = memory + i;
+                    ::new(p1) T(value);
+                }
+            } catch (...) {
+                array_destroy(memory, i);
+                throw;
+            }
+#else
+            for (std::size_t i = 0; i < size; i++) {
+                void* p1 = memory + i;
+                ::new(p1) T(value);
+            }
+#endif
+        }
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+        template<typename T, typename... Args>
+        inline void array_init_args(T* memory, std::size_t size, Args&&... args) {
+#if !defined(BOOST_NO_EXCEPTIONS)
+            std::size_t i = 0;
+            try {
+                for (; i < size; i++) {
+                    void* p1 = memory + i;
+                    ::new(p1) T(args...);
+                }
+            } catch (...) {
+                array_destroy(memory, i);
+                throw;
+            }
+#else
+            for (std::size_t i = 0; i < size; i++) {
+                void* p1 = memory + i;
+                ::new(p1) T(args...);
+            }
+#endif
+        }
+#endif
+#endif
+        template<typename T>
+        inline void array_init_list(T* memory, std::size_t size, const T* list) {
+#if !defined(BOOST_NO_EXCEPTIONS)
+            std::size_t i = 0;
+            try {
+                for (; i < size; i++) {
+                    void* p1 = memory + i;
+                    ::new(p1) T(list[i]);
+                }
+            } catch (...) {
+                array_destroy(memory, i);
+                throw;
+            }
+#else
+            for (std::size_t i = 0; i < size; i++) {
+                void* p1 = memory + i;
+                ::new(p1) T(list[i]);
+            }
+#endif
+        }
+        template<typename T, std::size_t N>
+        inline void array_init_list(T* memory, std::size_t size, const T* list) {
+#if !defined(BOOST_NO_EXCEPTIONS)
+            std::size_t i = 0;
+            try {
+                for (; i < size; i++) {
+                    void* p1 = memory + i;
+                    ::new(p1) T(list[i % N]);
+                }
+            } catch (...) {
+                array_destroy(memory, i);
+                throw;
+            }
+#else
+            for (std::size_t i = 0; i < size; i++) {
+                void* p1 = memory + i;
+                ::new(p1) T(list[i % N]);
+            }
+#endif
+        }
+        template<typename T>
+        inline void array_noinit(T*, std::size_t, boost::true_type) {
+        }
+        template<typename T>
+        inline void array_noinit(T* memory, std::size_t size, boost::false_type) {
+#if !defined(BOOST_NO_EXCEPTIONS)
+            std::size_t i = 0;
+            try {
+                for (; i < size; i++) {
+                    void* p1 = memory + i;
+                    ::new(p1) T;
+                }
+            } catch (...) {
+                array_destroy(memory, i);
+                throw;
+            }
+#else
+            for (std::size_t i = 0; i < size; i++) {
+                void* p1 = memory + i;
+                ::new(p1) T;
+            }
+#endif
+        }
+        template<typename T>
+        inline void array_noinit(T* memory, std::size_t size) {
+            boost::has_trivial_default_constructor<T> type;
+            array_noinit(memory, size, type);
+        }
+    }
+}
+
+#endif
--- a/include/boost/smart_ptr/detail/atomic_count.hpp
+++ b/include/boost/smart_ptr/detail/atomic_count.hpp
@@ -0,0 +1,119 @@
+#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  boost/detail/atomic_count.hpp - thread/SMP safe reference counter
+//
+//  Copyright (c) 2001, 2002 Peter Dimov and Multi Media Ltd.
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+//  typedef <implementation-defined> boost::detail::atomic_count;
+//
+//  atomic_count a(n);
+//
+//    (n is convertible to long)
+//
+//    Effects: Constructs an atomic_count with an initial value of n
+//
+//  a;
+//
+//    Returns: (long) the current value of a
+//
+//  ++a;
+//
+//    Effects: Atomically increments the value of a
+//    Returns: (long) the new value of a
+//
+//  --a;
+//
+//    Effects: Atomically decrements the value of a
+//    Returns: (long) the new value of a
+//
+//    Important note: when --a returns zero, it must act as a
+//      read memory barrier (RMB); i.e. the calling thread must
+//      have a synchronized view of the memory
+//
+//    On Intel IA-32 (x86) memory is always synchronized, so this
+//      is not a problem.
+//
+//    On many architectures the atomic instructions already act as
+//      a memory barrier.
+//
+//    This property is necessary for proper reference counting, since
+//      a thread can update the contents of a shared object, then
+//      release its reference, and another thread may immediately
+//      release the last reference causing object destruction.
+//
+//    The destructor needs to have a synchronized view of the
+//      object to perform proper cleanup.
+//
+//    Original example by Alexander Terekhov:
+//
+//    Given:
+//
+//    - a mutable shared object OBJ;
+//    - two threads THREAD1 and THREAD2 each holding 
+//      a private smart_ptr object pointing to that OBJ.
+//
+//    t1: THREAD1 updates OBJ (thread-safe via some synchronization)
+//      and a few cycles later (after "unlock") destroys smart_ptr;
+//
+//    t2: THREAD2 destroys smart_ptr WITHOUT doing any synchronization 
+//      with respect to shared mutable object OBJ; OBJ destructors
+//      are called driven by smart_ptr interface...
+//
+
+#include <boost/config.hpp>
+#include <boost/smart_ptr/detail/sp_has_sync.hpp>
+
+#ifndef BOOST_HAS_THREADS
+
+namespace boost
+{
+
+namespace detail
+{
+
+typedef long atomic_count;
+
+}
+
+}
+
+#elif defined(BOOST_AC_USE_PTHREADS)
+#  include <boost/smart_ptr/detail/atomic_count_pthreads.hpp>
+
+#elif defined( __GNUC__ ) && ( defined( __i386__ ) || defined( __x86_64__ ) )
+#  include <boost/smart_ptr/detail/atomic_count_gcc_x86.hpp>
+
+#elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
+#  include <boost/smart_ptr/detail/atomic_count_win32.hpp>
+
+#elif defined( BOOST_SP_HAS_SYNC )
+#  include <boost/smart_ptr/detail/atomic_count_sync.hpp>
+
+#elif defined(__GLIBCPP__) || defined(__GLIBCXX__)
+#  include <boost/smart_ptr/detail/atomic_count_gcc.hpp>
+
+#elif defined(BOOST_HAS_PTHREADS)
+
+#  define BOOST_AC_USE_PTHREADS
+#  include <boost/smart_ptr/detail/atomic_count_pthreads.hpp>
+
+#else
+
+// Use #define BOOST_DISABLE_THREADS to avoid the error
+#error Unrecognized threading platform
+
+#endif
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/atomic_count_gcc.hpp
+++ b/include/boost/smart_ptr/detail/atomic_count_gcc.hpp
@@ -0,0 +1,72 @@
+#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_GCC_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_GCC_HPP_INCLUDED
+
+//
+//  boost/detail/atomic_count_gcc.hpp
+//
+//  atomic_count for GNU libstdc++ v3
+//
+//  http://gcc.gnu.org/onlinedocs/porting/Thread-safety.html
+//
+//  Copyright (c) 2001, 2002 Peter Dimov and Multi Media Ltd.
+//  Copyright (c) 2002 Lars Gullik Bj<42>nnes <larsbj@lyx.org>
+//  Copyright 2003-2005 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#if __GNUC__ * 100 + __GNUC_MINOR__ >= 402
+# include <ext/atomicity.h> 
+#else 
+# include <bits/atomicity.h>
+#endif
+
+namespace boost
+{
+
+namespace detail
+{
+
+#if defined(__GLIBCXX__) // g++ 3.4+
+
+using __gnu_cxx::__atomic_add;
+using __gnu_cxx::__exchange_and_add;
+
+#endif
+
+class atomic_count
+{
+public:
+
+    explicit atomic_count( long v ) : value_( v ) {}
+
+    long operator++()
+    {
+        return __exchange_and_add( &value_, +1 ) + 1;
+    }
+
+    long operator--()
+    {
+        return __exchange_and_add( &value_, -1 ) - 1;
+    }
+
+    operator long() const
+    {
+        return __exchange_and_add( &value_, 0 );
+    }
+
+private:
+
+    atomic_count(atomic_count const &);
+    atomic_count & operator=(atomic_count const &);
+
+    mutable _Atomic_word value_;
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_GCC_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/atomic_count_gcc_x86.hpp
+++ b/include/boost/smart_ptr/detail/atomic_count_gcc_x86.hpp
@@ -0,0 +1,77 @@
+#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_GCC_X86_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_GCC_X86_HPP_INCLUDED
+
+//
+//  boost/detail/atomic_count_gcc_x86.hpp
+//
+//  atomic_count for g++ on 486+/AMD64
+//
+//  Copyright 2007 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+
+namespace boost
+{
+
+namespace detail
+{
+
+class atomic_count
+{
+public:
+
+    explicit atomic_count( long v ) : value_( static_cast< int >( v ) ) {}
+
+    long operator++()
+    {
+        return atomic_exchange_and_add( &value_, +1 ) + 1;
+    }
+
+    long operator--()
+    {
+        return atomic_exchange_and_add( &value_, -1 ) - 1;
+    }
+
+    operator long() const
+    {
+        return atomic_exchange_and_add( &value_, 0 );
+    }
+
+private:
+
+    atomic_count(atomic_count const &);
+    atomic_count & operator=(atomic_count const &);
+
+    mutable int value_;
+
+private:
+
+    static int atomic_exchange_and_add( int * pw, int dv )
+    {
+        // int r = *pw;
+        // *pw += dv;
+        // return r;
+
+        int r;
+
+        __asm__ __volatile__
+        (
+            "lock\n\t"
+            "xadd %1, %0":
+            "+m"( *pw ), "=r"( r ): // outputs (%0, %1)
+            "1"( dv ): // inputs (%2 == %1)
+            "memory", "cc" // clobbers
+        );
+
+        return r;
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_GCC_X86_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/atomic_count_pthreads.hpp
+++ b/include/boost/smart_ptr/detail/atomic_count_pthreads.hpp
@@ -0,0 +1,96 @@
+#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_PTHREADS_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_PTHREADS_HPP_INCLUDED
+
+//
+//  boost/detail/atomic_count_pthreads.hpp
+//
+//  Copyright (c) 2001, 2002 Peter Dimov and Multi Media Ltd.
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <pthread.h>
+
+//
+//  The generic pthread_mutex-based implementation sometimes leads to
+//    inefficiencies. Example: a class with two atomic_count members
+//    can get away with a single mutex.
+//
+//  Users can detect this situation by checking BOOST_AC_USE_PTHREADS.
+//
+
+namespace boost
+{
+
+namespace detail
+{
+
+class atomic_count
+{
+private:
+
+    class scoped_lock
+    {
+    public:
+
+        scoped_lock(pthread_mutex_t & m): m_(m)
+        {
+            pthread_mutex_lock(&m_);
+        }
+
+        ~scoped_lock()
+        {
+            pthread_mutex_unlock(&m_);
+        }
+
+    private:
+
+        pthread_mutex_t & m_;
+    };
+
+public:
+
+    explicit atomic_count(long v): value_(v)
+    {
+        pthread_mutex_init(&mutex_, 0);
+    }
+
+    ~atomic_count()
+    {
+        pthread_mutex_destroy(&mutex_);
+    }
+
+    long operator++()
+    {
+        scoped_lock lock(mutex_);
+        return ++value_;
+    }
+
+    long operator--()
+    {
+        scoped_lock lock(mutex_);
+        return --value_;
+    }
+
+    operator long() const
+    {
+        scoped_lock lock(mutex_);
+        return value_;
+    }
+
+private:
+
+    atomic_count(atomic_count const &);
+    atomic_count & operator=(atomic_count const &);
+
+    mutable pthread_mutex_t mutex_;
+    long value_;
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_PTHREADS_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/atomic_count_solaris.hpp
+++ b/include/boost/smart_ptr/detail/atomic_count_solaris.hpp
@@ -0,0 +1,59 @@
+#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SOLARIS_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SOLARIS_HPP_INCLUDED
+
+//
+//  boost/detail/atomic_count_solaris.hpp
+//   based on: boost/detail/atomic_count_win32.hpp
+//
+//  Copyright (c) 2001-2005 Peter Dimov
+//  Copyright (c) 2006 Michael van der Westhuizen
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <atomic.h>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class atomic_count
+{
+public:
+
+    explicit atomic_count( uint32_t v ): value_( v )
+    {
+    }
+
+    long operator++()
+    {
+        return atomic_inc_32_nv( &value_ );
+    }
+
+    long operator--()
+    {
+        return atomic_dec_32_nv( &value_ );
+    }
+
+    operator uint32_t() const
+    {
+        return static_cast<uint32_t const volatile &>( value_ );
+    }
+
+private:
+
+    atomic_count( atomic_count const & );
+    atomic_count & operator=( atomic_count const & );
+
+    uint32_t value_;
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SOLARIS_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/atomic_count_sync.hpp
+++ b/include/boost/smart_ptr/detail/atomic_count_sync.hpp
@@ -0,0 +1,61 @@
+#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED
+
+//
+//  boost/detail/atomic_count_sync.hpp
+//
+//  atomic_count for g++ 4.1+
+//
+//  http://gcc.gnu.org/onlinedocs/gcc-4.1.1/gcc/Atomic-Builtins.html
+//
+//  Copyright 2007 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#if defined( __ia64__ ) && defined( __INTEL_COMPILER )
+# include <ia64intrin.h>
+#endif
+
+namespace boost
+{
+
+namespace detail
+{
+
+class atomic_count
+{
+public:
+
+    explicit atomic_count( long v ) : value_( v ) {}
+
+    long operator++()
+    {
+        return __sync_add_and_fetch( &value_, 1 );
+    }
+
+    long operator--()
+    {
+        return __sync_add_and_fetch( &value_, -1 );
+    }
+
+    operator long() const
+    {
+        return __sync_fetch_and_add( &value_, 0 );
+    }
+
+private:
+
+    atomic_count(atomic_count const &);
+    atomic_count & operator=(atomic_count const &);
+
+    mutable long value_;
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/atomic_count_win32.hpp
+++ b/include/boost/smart_ptr/detail/atomic_count_win32.hpp
@@ -0,0 +1,63 @@
+#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  boost/detail/atomic_count_win32.hpp
+//
+//  Copyright (c) 2001-2005 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/detail/interlocked.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class atomic_count
+{
+public:
+
+    explicit atomic_count( long v ): value_( v )
+    {
+    }
+
+    long operator++()
+    {
+        return BOOST_INTERLOCKED_INCREMENT( &value_ );
+    }
+
+    long operator--()
+    {
+        return BOOST_INTERLOCKED_DECREMENT( &value_ );
+    }
+
+    operator long() const
+    {
+        return static_cast<long const volatile &>( value_ );
+    }
+
+private:
+
+    atomic_count( atomic_count const & );
+    atomic_count & operator=( atomic_count const & );
+
+    long value_;
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/lightweight_mutex.hpp
+++ b/include/boost/smart_ptr/detail/lightweight_mutex.hpp
@@ -0,0 +1,42 @@
+#ifndef BOOST_SMART_PTR_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  boost/detail/lightweight_mutex.hpp - lightweight mutex
+//
+//  Copyright (c) 2002, 2003 Peter Dimov and Multi Media Ltd.
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+//  typedef <unspecified> boost::detail::lightweight_mutex;
+//
+//  boost::detail::lightweight_mutex is a header-only implementation of
+//  a subset of the Mutex concept requirements:
+//
+//  http://www.boost.org/doc/html/threads/concepts.html#threads.concepts.Mutex
+//
+//  It maps to a CRITICAL_SECTION on Windows or a pthread_mutex on POSIX.
+//
+
+#include <boost/config.hpp>
+
+#if !defined(BOOST_HAS_THREADS)
+#  include <boost/smart_ptr/detail/lwm_nop.hpp>
+#elif defined(BOOST_HAS_PTHREADS)
+#  include <boost/smart_ptr/detail/lwm_pthreads.hpp>
+#elif defined(BOOST_HAS_WINTHREADS) || defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
+#  include <boost/smart_ptr/detail/lwm_win32_cs.hpp>
+#else
+// Use #define BOOST_DISABLE_THREADS to avoid the error
+#  error Unrecognized threading platform
+#endif
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/lwm_nop.hpp
+++ b/include/boost/smart_ptr/detail/lwm_nop.hpp
@@ -0,0 +1,37 @@
+#ifndef BOOST_SMART_PTR_DETAIL_LWM_NOP_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_LWM_NOP_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  boost/detail/lwm_nop.hpp
+//
+//  Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+namespace boost
+{
+
+namespace detail
+{
+
+class lightweight_mutex
+{
+public:
+
+    typedef lightweight_mutex scoped_lock;
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_NOP_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/lwm_pthreads.hpp
+++ b/include/boost/smart_ptr/detail/lwm_pthreads.hpp
@@ -0,0 +1,87 @@
+#ifndef BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  boost/detail/lwm_pthreads.hpp
+//
+//  Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/assert.hpp>
+#include <pthread.h>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class lightweight_mutex
+{
+private:
+
+    pthread_mutex_t m_;
+
+    lightweight_mutex(lightweight_mutex const &);
+    lightweight_mutex & operator=(lightweight_mutex const &);
+
+public:
+
+    lightweight_mutex()
+    {
+
+// HPUX 10.20 / DCE has a nonstandard pthread_mutex_init
+
+#if defined(__hpux) && defined(_DECTHREADS_)
+        BOOST_VERIFY( pthread_mutex_init( &m_, pthread_mutexattr_default ) == 0 );
+#else
+        BOOST_VERIFY( pthread_mutex_init( &m_, 0 ) == 0 );
+#endif
+    }
+
+    ~lightweight_mutex()
+    {
+        BOOST_VERIFY( pthread_mutex_destroy( &m_ ) == 0 );
+    }
+
+    class scoped_lock;
+    friend class scoped_lock;
+
+    class scoped_lock
+    {
+    private:
+
+        pthread_mutex_t & m_;
+
+        scoped_lock(scoped_lock const &);
+        scoped_lock & operator=(scoped_lock const &);
+
+    public:
+
+        scoped_lock(lightweight_mutex & m): m_(m.m_)
+        {
+            BOOST_VERIFY( pthread_mutex_lock( &m_ ) == 0 );
+        }
+
+        ~scoped_lock()
+        {
+            BOOST_VERIFY( pthread_mutex_unlock( &m_ ) == 0 );
+        }
+    };
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/lwm_win32_cs.hpp
+++ b/include/boost/smart_ptr/detail/lwm_win32_cs.hpp
@@ -0,0 +1,108 @@
+#ifndef BOOST_SMART_PTR_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  boost/detail/lwm_win32_cs.hpp
+//
+//  Copyright (c) 2002, 2003 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifdef BOOST_USE_WINDOWS_H
+#  include <windows.h>
+#endif
+
+namespace boost
+{
+
+namespace detail
+{
+
+#ifndef BOOST_USE_WINDOWS_H
+
+struct critical_section
+{
+    struct critical_section_debug * DebugInfo;
+    long LockCount;
+    long RecursionCount;
+    void * OwningThread;
+    void * LockSemaphore;
+#if defined(_WIN64)
+    unsigned __int64 SpinCount;
+#else
+    unsigned long SpinCount;
+#endif
+};
+
+extern "C" __declspec(dllimport) void __stdcall InitializeCriticalSection(critical_section *);
+extern "C" __declspec(dllimport) void __stdcall EnterCriticalSection(critical_section *);
+extern "C" __declspec(dllimport) void __stdcall LeaveCriticalSection(critical_section *);
+extern "C" __declspec(dllimport) void __stdcall DeleteCriticalSection(critical_section *);
+
+#else
+
+typedef ::CRITICAL_SECTION critical_section;
+
+#endif // #ifndef BOOST_USE_WINDOWS_H
+
+class lightweight_mutex
+{
+private:
+
+    critical_section cs_;
+
+    lightweight_mutex(lightweight_mutex const &);
+    lightweight_mutex & operator=(lightweight_mutex const &);
+
+public:
+
+    lightweight_mutex()
+    {
+        InitializeCriticalSection(&cs_);
+    }
+
+    ~lightweight_mutex()
+    {
+        DeleteCriticalSection(&cs_);
+    }
+
+    class scoped_lock;
+    friend class scoped_lock;
+
+    class scoped_lock
+    {
+    private:
+
+        lightweight_mutex & m_;
+
+        scoped_lock(scoped_lock const &);
+        scoped_lock & operator=(scoped_lock const &);
+
+    public:
+
+        explicit scoped_lock(lightweight_mutex & m): m_(m)
+        {
+            EnterCriticalSection(&m_.cs_);
+        }
+
+        ~scoped_lock()
+        {
+            LeaveCriticalSection(&m_.cs_);
+        }
+    };
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/make_array_helper.hpp
+++ b/include/boost/smart_ptr/detail/make_array_helper.hpp
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2012 Glen Joseph Fernandes 
+ * glenfe at live dot com
+ *
+ * Distributed under the Boost Software License, 
+ * Version 1.0. (See accompanying file LICENSE_1_0.txt 
+ * or copy at http://boost.org/LICENSE_1_0.txt)
+ */
+#ifndef BOOST_SMART_PTR_DETAIL_MAKE_ARRAY_HELPER_HPP
+#define BOOST_SMART_PTR_DETAIL_MAKE_ARRAY_HELPER_HPP
+
+#include <boost/type_traits/alignment_of.hpp>
+
+namespace boost {
+    namespace detail {
+        template<typename T, typename Y = char>
+        class make_array_helper;
+        template<typename T, typename Y>
+        class make_array_helper<T[], Y> {
+            template<typename T2, typename Y2>
+            friend class make_array_helper;
+        public:
+            typedef Y           value_type;
+            typedef Y*          pointer;
+            typedef const Y*    const_pointer;
+            typedef Y&          reference;
+            typedef const Y&    const_reference;
+            typedef std::size_t size_type;
+            typedef ptrdiff_t   difference_type;
+            template<typename U>
+            struct rebind {
+                typedef make_array_helper<T[], U> other;
+            };
+            make_array_helper(std::size_t size_, T** data_)
+                : size(sizeof(T) * size_),
+                  data(data_) {
+            }
+            template<class U>
+            make_array_helper(const make_array_helper<T[], U>& other) 
+                : size(other.size),
+                  data(other.data) {
+            }
+            pointer address(reference value) const {
+                return &value;
+            }
+            const_pointer address(const_reference value) const {
+                return &value;
+            }
+            size_type max_size() const {
+                return static_cast<std::size_t>(-1) / sizeof(Y);
+            }
+            pointer allocate(size_type count, const void* = 0) {
+                std::size_t a1 = boost::alignment_of<T>::value;
+                std::size_t n1 = count * sizeof(Y) + a1 - 1;
+                void*  p1 = ::operator new(n1 + size);
+                char*  p2 = static_cast<char*>(p1) + n1;
+                while (std::size_t(p2) % a1 != 0) {
+                    p2--;
+                }
+                *data = reinterpret_cast<T*>(p2);
+                return  reinterpret_cast<Y*>(p1);
+            }
+            void deallocate(pointer memory, size_type) {
+                void* p1 = memory;
+                ::operator delete(p1);
+            }
+            void construct(pointer memory, const Y& value) {
+                void* p1 = memory;
+                ::new(p1) Y(value);
+            }
+            void destroy(pointer memory) {
+                memory->~Y();
+            }
+            template<typename U>
+            bool operator==(const make_array_helper<T[], U>&) const {
+                return true;
+            }
+            template<typename U>
+            bool operator!=(const make_array_helper<T[], U>& other) const {
+                return !(*this == other); 
+            }
+        private:
+            std::size_t size;
+            T** data;
+        };
+        template<typename T, std::size_t N, typename Y>
+        class make_array_helper<T[N], Y> {
+            template<typename T2, typename Y2>
+            friend class make_array_helper;
+        public:
+            typedef Y           value_type;
+            typedef Y*          pointer;
+            typedef const Y*    const_pointer;
+            typedef Y&          reference;
+            typedef const Y&    const_reference;
+            typedef std::size_t size_type;
+            typedef ptrdiff_t   difference_type;
+            template<typename U>
+            struct rebind {
+                typedef make_array_helper<T[N], U> other;
+            };
+            make_array_helper(T** data_)
+                : data(data_) {
+            }
+            template<class U>
+            make_array_helper(const make_array_helper<T[N], U>& other) 
+                : data(other.data) {
+            }
+            pointer address(reference value) const {
+                return &value;
+            }
+            const_pointer address(const_reference value) const {
+                return &value;
+            }
+            size_type max_size() const {
+                return static_cast<std::size_t>(-1) / sizeof(Y);
+            }
+            pointer allocate(size_type count, const void* = 0) {
+                std::size_t a1 = boost::alignment_of<T>::value;
+                std::size_t n1 = count * sizeof(Y) + a1 - 1;
+                void*  p1 = ::operator new(n1 + N1);
+                char*  p2 = static_cast<char*>(p1) + n1;
+                while (std::size_t(p2) % a1 != 0) {
+                    p2--;
+                }
+                *data = reinterpret_cast<T*>(p2);
+                return  reinterpret_cast<Y*>(p1);
+            }
+            void deallocate(pointer memory, size_type) {
+                void* p1 = memory;
+                ::operator delete(p1);
+            }
+            void construct(pointer memory, const Y& value) {
+                void* p1 = memory;
+                ::new(p1) Y(value);
+            }
+            void destroy(pointer memory) {
+                memory->~Y();
+            }
+            template<typename U>
+            bool operator==(const make_array_helper<T[N], U>&) const {
+                return true;
+            }
+            template<typename U>
+            bool operator!=(const make_array_helper<T[N], U>& other) const {
+                return !(*this == other); 
+            }
+        private:
+            enum {
+                N1 = N * sizeof(T)
+            };
+            T** data;
+        };
+    }
+}
+
+#endif
--- a/include/boost/smart_ptr/detail/operator_bool.hpp
+++ b/include/boost/smart_ptr/detail/operator_bool.hpp
@@ -0,0 +1,63 @@
+//  This header intentionally has no include guards.
+//
+//  Copyright (c) 2001-2009, 2012 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+
+#if !defined( BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS ) && !defined( BOOST_NO_CXX11_NULLPTR )
+
+    explicit operator bool () const BOOST_NOEXCEPT
+    {
+        return px != 0;
+    }
+
+#elif ( defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, < 0x570) ) || defined(__CINT__)
+
+    operator bool () const BOOST_NOEXCEPT
+    {
+        return px != 0;
+    }
+
+#elif defined( _MANAGED )
+
+    static void unspecified_bool( this_type*** )
+    {
+    }
+
+    typedef void (*unspecified_bool_type)( this_type*** );
+
+    operator unspecified_bool_type() const BOOST_NOEXCEPT
+    {
+        return px == 0? 0: unspecified_bool;
+    }
+
+#elif \
+    ( defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, < 0x3200) ) || \
+    ( defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ < 304) ) || \
+    ( defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x590) )
+
+    typedef element_type * (this_type::*unspecified_bool_type)() const;
+
+    operator unspecified_bool_type() const BOOST_NOEXCEPT
+    {
+        return px == 0? 0: &this_type::get;
+    }
+
+#else
+
+    typedef element_type * this_type::*unspecified_bool_type;
+
+    operator unspecified_bool_type() const BOOST_NOEXCEPT
+    {
+        return px == 0? 0: &this_type::px;
+    }
+
+#endif
+
+    // operator! is redundant, but some compilers need it
+    bool operator! () const BOOST_NOEXCEPT
+    {
+        return px == 0;
+    }
--- a/include/boost/smart_ptr/detail/quick_allocator.hpp
+++ b/include/boost/smart_ptr/detail/quick_allocator.hpp
@@ -0,0 +1,199 @@
+#ifndef BOOST_SMART_PTR_DETAIL_QUICK_ALLOCATOR_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_QUICK_ALLOCATOR_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/quick_allocator.hpp
+//
+//  Copyright (c) 2003 David Abrahams
+//  Copyright (c) 2003 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/config.hpp>
+
+#include <boost/smart_ptr/detail/lightweight_mutex.hpp>
+#include <boost/type_traits/type_with_alignment.hpp>
+#include <boost/type_traits/alignment_of.hpp>
+
+#include <new>              // ::operator new, ::operator delete
+#include <cstddef>          // std::size_t
+
+namespace boost
+{
+
+namespace detail
+{
+
+template<unsigned size, unsigned align_> union freeblock
+{
+    typedef typename boost::type_with_alignment<align_>::type aligner_type;
+    aligner_type aligner;
+    char bytes[size];
+    freeblock * next;
+};
+
+template<unsigned size, unsigned align_> struct allocator_impl
+{
+    typedef freeblock<size, align_> block;
+
+    // It may seem odd to use such small pages.
+    //
+    // However, on a typical Windows implementation that uses
+    // the OS allocator, "normal size" pages interact with the
+    // "ordinary" operator new, slowing it down dramatically.
+    //
+    // 512 byte pages are handled by the small object allocator,
+    // and don't interfere with ::new.
+    //
+    // The other alternative is to use much bigger pages (1M.)
+    //
+    // It is surprisingly easy to hit pathological behavior by
+    // varying the page size. g++ 2.96 on Red Hat Linux 7.2,
+    // for example, passionately dislikes 496. 512 seems OK.
+
+#if defined(BOOST_QA_PAGE_SIZE)
+
+    enum { items_per_page = BOOST_QA_PAGE_SIZE / size };
+
+#else
+
+    enum { items_per_page = 512 / size }; // 1048560 / size
+
+#endif
+
+#ifdef BOOST_HAS_THREADS
+
+    static lightweight_mutex & mutex()
+    {
+        static freeblock< sizeof( lightweight_mutex ), boost::alignment_of< lightweight_mutex >::value > fbm;
+        static lightweight_mutex * pm = new( &fbm ) lightweight_mutex;
+        return *pm;
+    }
+
+    static lightweight_mutex * mutex_init;
+
+#endif
+
+    static block * free;
+    static block * page;
+    static unsigned last;
+
+    static inline void * alloc()
+    {
+#ifdef BOOST_HAS_THREADS
+        lightweight_mutex::scoped_lock lock( mutex() );
+#endif
+        if(block * x = free)
+        {
+            free = x->next;
+            return x;
+        }
+        else
+        {
+            if(last == items_per_page)
+            {
+                // "Listen to me carefully: there is no memory leak"
+                // -- Scott Meyers, Eff C++ 2nd Ed Item 10
+                page = ::new block[items_per_page];
+                last = 0;
+            }
+
+            return &page[last++];
+        }
+    }
+
+    static inline void * alloc(std::size_t n)
+    {
+        if(n != size) // class-specific new called for a derived object
+        {
+            return ::operator new(n);
+        }
+        else
+        {
+#ifdef BOOST_HAS_THREADS
+            lightweight_mutex::scoped_lock lock( mutex() );
+#endif
+            if(block * x = free)
+            {
+                free = x->next;
+                return x;
+            }
+            else
+            {
+                if(last == items_per_page)
+                {
+                    page = ::new block[items_per_page];
+                    last = 0;
+                }
+
+                return &page[last++];
+            }
+        }
+    }
+
+    static inline void dealloc(void * pv)
+    {
+        if(pv != 0) // 18.4.1.1/13
+        {
+#ifdef BOOST_HAS_THREADS
+            lightweight_mutex::scoped_lock lock( mutex() );
+#endif
+            block * pb = static_cast<block *>(pv);
+            pb->next = free;
+            free = pb;
+        }
+    }
+
+    static inline void dealloc(void * pv, std::size_t n)
+    {
+        if(n != size) // class-specific delete called for a derived object
+        {
+            ::operator delete(pv);
+        }
+        else if(pv != 0) // 18.4.1.1/13
+        {
+#ifdef BOOST_HAS_THREADS
+            lightweight_mutex::scoped_lock lock( mutex() );
+#endif
+            block * pb = static_cast<block *>(pv);
+            pb->next = free;
+            free = pb;
+        }
+    }
+};
+
+#ifdef BOOST_HAS_THREADS
+
+template<unsigned size, unsigned align_>
+  lightweight_mutex * allocator_impl<size, align_>::mutex_init = &allocator_impl<size, align_>::mutex();
+
+#endif
+
+template<unsigned size, unsigned align_>
+  freeblock<size, align_> * allocator_impl<size, align_>::free = 0;
+
+template<unsigned size, unsigned align_>
+  freeblock<size, align_> * allocator_impl<size, align_>::page = 0;
+
+template<unsigned size, unsigned align_>
+  unsigned allocator_impl<size, align_>::last = allocator_impl<size, align_>::items_per_page;
+
+template<class T>
+struct quick_allocator: public allocator_impl< sizeof(T), boost::alignment_of<T>::value >
+{
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_QUICK_ALLOCATOR_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/shared_array_nmt.hpp
+++ b/include/boost/smart_ptr/detail/shared_array_nmt.hpp
@@ -0,0 +1,151 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED
+
+//
+//  detail/shared_array_nmt.hpp - shared_array.hpp without member templates
+//
+//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+//  Copyright (c) 2001, 2002 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/smart_ptr/shared_array.htm for documentation.
+//
+
+#include <boost/assert.hpp>
+#include <boost/checked_delete.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/smart_ptr/detail/atomic_count.hpp>
+
+#include <cstddef>          // for std::ptrdiff_t
+#include <algorithm>        // for std::swap
+#include <functional>       // for std::less
+#include <new>              // for std::bad_alloc
+
+namespace boost
+{
+
+template<class T> class shared_array
+{
+private:
+
+    typedef detail::atomic_count count_type;
+
+public:
+
+    typedef T element_type;
+      
+    explicit shared_array(T * p = 0): px(p)
+    {
+#ifndef BOOST_NO_EXCEPTIONS
+
+        try  // prevent leak if new throws
+        {
+            pn = new count_type(1);
+        }
+        catch(...)
+        {
+            boost::checked_array_delete(p);
+            throw;
+        }
+
+#else
+
+        pn = new count_type(1);
+
+        if(pn == 0)
+        {
+            boost::checked_array_delete(p);
+            boost::throw_exception(std::bad_alloc());
+        }
+
+#endif
+    }
+
+    ~shared_array()
+    {
+        if(--*pn == 0)
+        {
+            boost::checked_array_delete(px);
+            delete pn;
+        }
+    }
+
+    shared_array(shared_array const & r) : px(r.px)  // never throws
+    {
+        pn = r.pn;
+        ++*pn;
+    }
+
+    shared_array & operator=(shared_array const & r)
+    {
+        shared_array(r).swap(*this);
+        return *this;
+    }
+
+    void reset(T * p = 0)
+    {
+        BOOST_ASSERT(p == 0 || p != px);
+        shared_array(p).swap(*this);
+    }
+
+    T * get() const  // never throws
+    {
+        return px;
+    }
+
+    T & operator[](std::ptrdiff_t i) const  // never throws
+    {
+        BOOST_ASSERT(px != 0);
+        BOOST_ASSERT(i >= 0);
+        return px[i];
+    }
+
+    long use_count() const  // never throws
+    {
+        return *pn;
+    }
+
+    bool unique() const  // never throws
+    {
+        return *pn == 1;
+    }
+
+    void swap(shared_array<T> & other)  // never throws
+    {
+        std::swap(px, other.px);
+        std::swap(pn, other.pn);
+    }
+
+private:
+
+    T * px;            // contained pointer
+    count_type * pn;   // ptr to reference counter
+      
+};  // shared_array
+
+template<class T, class U> inline bool operator==(shared_array<T> const & a, shared_array<U> const & b)
+{
+    return a.get() == b.get();
+}
+
+template<class T, class U> inline bool operator!=(shared_array<T> const & a, shared_array<U> const & b)
+{
+    return a.get() != b.get();
+}
+
+template<class T> inline bool operator<(shared_array<T> const & a, shared_array<T> const & b)
+{
+    return std::less<T*>()(a.get(), b.get());
+}
+
+template<class T> void swap(shared_array<T> & a, shared_array<T> & b)
+{
+    a.swap(b);
+}
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/shared_count.hpp
+++ b/include/boost/smart_ptr/detail/shared_count.hpp
@@ -0,0 +1,603 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SHARED_COUNT_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SHARED_COUNT_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/shared_count.hpp
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2005 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifdef __BORLANDC__
+# pragma warn -8027     // Functions containing try are not expanded inline
+#endif
+
+#include <boost/config.hpp>
+#include <boost/checked_delete.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/smart_ptr/bad_weak_ptr.hpp>
+#include <boost/smart_ptr/detail/sp_counted_base.hpp>
+#include <boost/smart_ptr/detail/sp_counted_impl.hpp>
+#include <boost/detail/workaround.hpp>
+// In order to avoid circular dependencies with Boost.TR1
+// we make sure that our include of <memory> doesn't try to
+// pull in the TR1 headers: that's why we use this header 
+// rather than including <memory> directly:
+#include <boost/config/no_tr1/memory.hpp>  // std::auto_ptr
+#include <functional>       // std::less
+
+#ifdef BOOST_NO_EXCEPTIONS
+# include <new>              // std::bad_alloc
+#endif
+
+#if !defined( BOOST_NO_CXX11_SMART_PTR )
+# include <boost/utility/addressof.hpp>
+#endif
+
+namespace boost
+{
+
+namespace detail
+{
+
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+
+int const shared_count_id = 0x2C35F101;
+int const   weak_count_id = 0x298C38A4;
+
+#endif
+
+struct sp_nothrow_tag {};
+
+template< class D > struct sp_inplace_tag
+{
+};
+
+#if !defined( BOOST_NO_CXX11_SMART_PTR )
+
+template< class T > class sp_reference_wrapper
+{ 
+public:
+
+    explicit sp_reference_wrapper( T & t): t_( boost::addressof( t ) )
+    {
+    }
+
+    template< class Y > void operator()( Y * p ) const
+    {
+        (*t_)( p );
+    }
+
+private:
+
+    T * t_;
+};
+
+template< class D > struct sp_convert_reference
+{
+    typedef D type;
+};
+
+template< class D > struct sp_convert_reference< D& >
+{
+    typedef sp_reference_wrapper< D > type;
+};
+
+#endif
+
+class weak_count;
+
+class shared_count
+{
+private:
+
+    sp_counted_base * pi_;
+
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+    int id_;
+#endif
+
+    friend class weak_count;
+
+public:
+
+    shared_count(): pi_(0) // nothrow
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(shared_count_id)
+#endif
+    {
+    }
+
+    template<class Y> explicit shared_count( Y * p ): pi_( 0 )
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(shared_count_id)
+#endif
+    {
+#ifndef BOOST_NO_EXCEPTIONS
+
+        try
+        {
+            pi_ = new sp_counted_impl_p<Y>( p );
+        }
+        catch(...)
+        {
+            boost::checked_delete( p );
+            throw;
+        }
+
+#else
+
+        pi_ = new sp_counted_impl_p<Y>( p );
+
+        if( pi_ == 0 )
+        {
+            boost::checked_delete( p );
+            boost::throw_exception( std::bad_alloc() );
+        }
+
+#endif
+    }
+
+#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1200 )
+    template<class Y, class D> shared_count( Y * p, D d ): pi_(0)
+#else
+    template<class P, class D> shared_count( P p, D d ): pi_(0)
+#endif
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(shared_count_id)
+#endif
+    {
+#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1200 )
+        typedef Y* P;
+#endif
+#ifndef BOOST_NO_EXCEPTIONS
+
+        try
+        {
+            pi_ = new sp_counted_impl_pd<P, D>(p, d);
+        }
+        catch(...)
+        {
+            d(p); // delete p
+            throw;
+        }
+
+#else
+
+        pi_ = new sp_counted_impl_pd<P, D>(p, d);
+
+        if(pi_ == 0)
+        {
+            d(p); // delete p
+            boost::throw_exception(std::bad_alloc());
+        }
+
+#endif
+    }
+
+#if !defined( BOOST_NO_FUNCTION_TEMPLATE_ORDERING )
+
+    template< class P, class D > shared_count( P p, sp_inplace_tag<D> ): pi_( 0 )
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(shared_count_id)
+#endif
+    {
+#ifndef BOOST_NO_EXCEPTIONS
+
+        try
+        {
+            pi_ = new sp_counted_impl_pd< P, D >( p );
+        }
+        catch( ... )
+        {
+            D::operator_fn( p ); // delete p
+            throw;
+        }
+
+#else
+
+        pi_ = new sp_counted_impl_pd< P, D >( p );
+
+        if( pi_ == 0 )
+        {
+            D::operator_fn( p ); // delete p
+            boost::throw_exception( std::bad_alloc() );
+        }
+
+#endif // #ifndef BOOST_NO_EXCEPTIONS
+    }
+
+#endif // !defined( BOOST_NO_FUNCTION_TEMPLATE_ORDERING )
+
+    template<class P, class D, class A> shared_count( P p, D d, A a ): pi_( 0 )
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(shared_count_id)
+#endif
+    {
+        typedef sp_counted_impl_pda<P, D, A> impl_type;
+        typedef typename A::template rebind< impl_type >::other A2;
+
+        A2 a2( a );
+
+#ifndef BOOST_NO_EXCEPTIONS
+
+        try
+        {
+            pi_ = a2.allocate( 1, static_cast< impl_type* >( 0 ) );
+            new( static_cast< void* >( pi_ ) ) impl_type( p, d, a );
+        }
+        catch(...)
+        {
+            d( p );
+
+            if( pi_ != 0 )
+            {
+                a2.deallocate( static_cast< impl_type* >( pi_ ), 1 );
+            }
+
+            throw;
+        }
+
+#else
+
+        pi_ = a2.allocate( 1, static_cast< impl_type* >( 0 ) );
+
+        if( pi_ != 0 )
+        {
+            new( static_cast< void* >( pi_ ) ) impl_type( p, d, a );
+        }
+        else
+        {
+            d( p );
+            boost::throw_exception( std::bad_alloc() );
+        }
+
+#endif
+    }
+
+#if !defined( BOOST_NO_FUNCTION_TEMPLATE_ORDERING )
+
+    template< class P, class D, class A > shared_count( P p, sp_inplace_tag< D >, A a ): pi_( 0 )
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(shared_count_id)
+#endif
+    {
+        typedef sp_counted_impl_pda< P, D, A > impl_type;
+        typedef typename A::template rebind< impl_type >::other A2;
+
+        A2 a2( a );
+
+#ifndef BOOST_NO_EXCEPTIONS
+
+        try
+        {
+            pi_ = a2.allocate( 1, static_cast< impl_type* >( 0 ) );
+            new( static_cast< void* >( pi_ ) ) impl_type( p, a );
+        }
+        catch(...)
+        {
+            D::operator_fn( p );
+
+            if( pi_ != 0 )
+            {
+                a2.deallocate( static_cast< impl_type* >( pi_ ), 1 );
+            }
+
+            throw;
+        }
+
+#else
+
+        pi_ = a2.allocate( 1, static_cast< impl_type* >( 0 ) );
+
+        if( pi_ != 0 )
+        {
+            new( static_cast< void* >( pi_ ) ) impl_type( p, a );
+        }
+        else
+        {
+            D::operator_fn( p );
+            boost::throw_exception( std::bad_alloc() );
+        }
+
+#endif // #ifndef BOOST_NO_EXCEPTIONS
+    }
+
+#endif // !defined( BOOST_NO_FUNCTION_TEMPLATE_ORDERING )
+
+#ifndef BOOST_NO_AUTO_PTR
+
+    // auto_ptr<Y> is special cased to provide the strong guarantee
+
+    template<class Y>
+    explicit shared_count( std::auto_ptr<Y> & r ): pi_( new sp_counted_impl_p<Y>( r.get() ) )
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(shared_count_id)
+#endif
+    {
+#ifdef BOOST_NO_EXCEPTIONS
+
+        if( pi_ == 0 )
+        {
+            boost::throw_exception(std::bad_alloc());
+        }
+
+#endif
+
+        r.release();
+    }
+
+#endif 
+
+#if !defined( BOOST_NO_CXX11_SMART_PTR )
+
+    template<class Y, class D>
+    explicit shared_count( std::unique_ptr<Y, D> & r ): pi_( 0 )
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(shared_count_id)
+#endif
+    {
+        typedef typename sp_convert_reference<D>::type D2;
+
+        D2 d2( r.get_deleter() );
+        pi_ = new sp_counted_impl_pd< typename std::unique_ptr<Y, D>::pointer, D2 >( r.get(), d2 );
+
+#ifdef BOOST_NO_EXCEPTIONS
+
+        if( pi_ == 0 )
+        {
+            boost::throw_exception( std::bad_alloc() );
+        }
+
+#endif
+
+        r.release();
+    }
+
+#endif
+
+    ~shared_count() // nothrow
+    {
+        if( pi_ != 0 ) pi_->release();
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        id_ = 0;
+#endif
+    }
+
+    shared_count(shared_count const & r): pi_(r.pi_) // nothrow
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(shared_count_id)
+#endif
+    {
+        if( pi_ != 0 ) pi_->add_ref_copy();
+    }
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+    shared_count(shared_count && r): pi_(r.pi_) // nothrow
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(shared_count_id)
+#endif
+    {
+        r.pi_ = 0;
+    }
+
+#endif
+
+    explicit shared_count(weak_count const & r); // throws bad_weak_ptr when r.use_count() == 0
+    shared_count( weak_count const & r, sp_nothrow_tag ); // constructs an empty *this when r.use_count() == 0
+
+    shared_count & operator= (shared_count const & r) // nothrow
+    {
+        sp_counted_base * tmp = r.pi_;
+
+        if( tmp != pi_ )
+        {
+            if( tmp != 0 ) tmp->add_ref_copy();
+            if( pi_ != 0 ) pi_->release();
+            pi_ = tmp;
+        }
+
+        return *this;
+    }
+
+    void swap(shared_count & r) // nothrow
+    {
+        sp_counted_base * tmp = r.pi_;
+        r.pi_ = pi_;
+        pi_ = tmp;
+    }
+
+    long use_count() const // nothrow
+    {
+        return pi_ != 0? pi_->use_count(): 0;
+    }
+
+    bool unique() const // nothrow
+    {
+        return use_count() == 1;
+    }
+
+    bool empty() const // nothrow
+    {
+        return pi_ == 0;
+    }
+
+    friend inline bool operator==(shared_count const & a, shared_count const & b)
+    {
+        return a.pi_ == b.pi_;
+    }
+
+    friend inline bool operator<(shared_count const & a, shared_count const & b)
+    {
+        return std::less<sp_counted_base *>()( a.pi_, b.pi_ );
+    }
+
+    void * get_deleter( sp_typeinfo const & ti ) const
+    {
+        return pi_? pi_->get_deleter( ti ): 0;
+    }
+
+    void * get_untyped_deleter() const
+    {
+        return pi_? pi_->get_untyped_deleter(): 0;
+    }
+};
+
+
+class weak_count
+{
+private:
+
+    sp_counted_base * pi_;
+
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+    int id_;
+#endif
+
+    friend class shared_count;
+
+public:
+
+    weak_count(): pi_(0) // nothrow
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(weak_count_id)
+#endif
+    {
+    }
+
+    weak_count(shared_count const & r): pi_(r.pi_) // nothrow
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(weak_count_id)
+#endif
+    {
+        if(pi_ != 0) pi_->weak_add_ref();
+    }
+
+    weak_count(weak_count const & r): pi_(r.pi_) // nothrow
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(weak_count_id)
+#endif
+    {
+        if(pi_ != 0) pi_->weak_add_ref();
+    }
+
+// Move support
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+    weak_count(weak_count && r): pi_(r.pi_) // nothrow
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(weak_count_id)
+#endif
+    {
+        r.pi_ = 0;
+    }
+
+#endif
+
+    ~weak_count() // nothrow
+    {
+        if(pi_ != 0) pi_->weak_release();
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        id_ = 0;
+#endif
+    }
+
+    weak_count & operator= (shared_count const & r) // nothrow
+    {
+        sp_counted_base * tmp = r.pi_;
+
+        if( tmp != pi_ )
+        {
+            if(tmp != 0) tmp->weak_add_ref();
+            if(pi_ != 0) pi_->weak_release();
+            pi_ = tmp;
+        }
+
+        return *this;
+    }
+
+    weak_count & operator= (weak_count const & r) // nothrow
+    {
+        sp_counted_base * tmp = r.pi_;
+
+        if( tmp != pi_ )
+        {
+            if(tmp != 0) tmp->weak_add_ref();
+            if(pi_ != 0) pi_->weak_release();
+            pi_ = tmp;
+        }
+
+        return *this;
+    }
+
+    void swap(weak_count & r) // nothrow
+    {
+        sp_counted_base * tmp = r.pi_;
+        r.pi_ = pi_;
+        pi_ = tmp;
+    }
+
+    long use_count() const // nothrow
+    {
+        return pi_ != 0? pi_->use_count(): 0;
+    }
+
+    bool empty() const // nothrow
+    {
+        return pi_ == 0;
+    }
+
+    friend inline bool operator==(weak_count const & a, weak_count const & b)
+    {
+        return a.pi_ == b.pi_;
+    }
+
+    friend inline bool operator<(weak_count const & a, weak_count const & b)
+    {
+        return std::less<sp_counted_base *>()(a.pi_, b.pi_);
+    }
+};
+
+inline shared_count::shared_count( weak_count const & r ): pi_( r.pi_ )
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(shared_count_id)
+#endif
+{
+    if( pi_ == 0 || !pi_->add_ref_lock() )
+    {
+        boost::throw_exception( boost::bad_weak_ptr() );
+    }
+}
+
+inline shared_count::shared_count( weak_count const & r, sp_nothrow_tag ): pi_( r.pi_ )
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        , id_(shared_count_id)
+#endif
+{
+    if( pi_ != 0 && !pi_->add_ref_lock() )
+    {
+        pi_ = 0;
+    }
+}
+
+} // namespace detail
+
+} // namespace boost
+
+#ifdef __BORLANDC__
+# pragma warn .8027     // Functions containing try are not expanded inline
+#endif
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SHARED_COUNT_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/shared_ptr_nmt.hpp
+++ b/include/boost/smart_ptr/detail/shared_ptr_nmt.hpp
@@ -0,0 +1,182 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SHARED_PTR_NMT_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SHARED_PTR_NMT_HPP_INCLUDED
+
+//
+//  detail/shared_ptr_nmt.hpp - shared_ptr.hpp without member templates
+//
+//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+//  Copyright (c) 2001, 2002 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/smart_ptr/shared_ptr.htm for documentation.
+//
+
+#include <boost/assert.hpp>
+#include <boost/checked_delete.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/smart_ptr/detail/atomic_count.hpp>
+
+#ifndef BOOST_NO_AUTO_PTR
+# include <memory>          // for std::auto_ptr
+#endif
+
+#include <algorithm>        // for std::swap
+#include <functional>       // for std::less
+#include <new>              // for std::bad_alloc
+
+namespace boost
+{
+
+template<class T> class shared_ptr
+{
+private:
+
+    typedef detail::atomic_count count_type;
+
+public:
+
+    typedef T element_type;
+    typedef T value_type;
+
+    explicit shared_ptr(T * p = 0): px(p)
+    {
+#ifndef BOOST_NO_EXCEPTIONS
+
+        try  // prevent leak if new throws
+        {
+            pn = new count_type(1);
+        }
+        catch(...)
+        {
+            boost::checked_delete(p);
+            throw;
+        }
+
+#else
+
+        pn = new count_type(1);
+
+        if(pn == 0)
+        {
+            boost::checked_delete(p);
+            boost::throw_exception(std::bad_alloc());
+        }
+
+#endif
+    }
+
+    ~shared_ptr()
+    {
+        if(--*pn == 0)
+        {
+            boost::checked_delete(px);
+            delete pn;
+        }
+    }
+
+    shared_ptr(shared_ptr const & r): px(r.px)  // never throws
+    {
+        pn = r.pn;
+        ++*pn;
+    }
+
+    shared_ptr & operator=(shared_ptr const & r)
+    {
+        shared_ptr(r).swap(*this);
+        return *this;
+    }
+
+#ifndef BOOST_NO_AUTO_PTR
+
+    explicit shared_ptr(std::auto_ptr<T> & r)
+    { 
+        pn = new count_type(1); // may throw
+        px = r.release(); // fix: moved here to stop leak if new throws
+    } 
+
+    shared_ptr & operator=(std::auto_ptr<T> & r)
+    {
+        shared_ptr(r).swap(*this);
+        return *this;
+    }
+
+#endif
+
+    void reset(T * p = 0)
+    {
+        BOOST_ASSERT(p == 0 || p != px);
+        shared_ptr(p).swap(*this);
+    }
+
+    T & operator*() const  // never throws
+    {
+        BOOST_ASSERT(px != 0);
+        return *px;
+    }
+
+    T * operator->() const  // never throws
+    {
+        BOOST_ASSERT(px != 0);
+        return px;
+    }
+
+    T * get() const  // never throws
+    {
+        return px;
+    }
+
+    long use_count() const  // never throws
+    {
+        return *pn;
+    }
+
+    bool unique() const  // never throws
+    {
+        return *pn == 1;
+    }
+    
+    void swap(shared_ptr<T> & other)  // never throws
+    {
+        std::swap(px, other.px);
+        std::swap(pn, other.pn);
+    }
+
+private:
+
+    T * px;            // contained pointer
+    count_type * pn;   // ptr to reference counter
+};
+
+template<class T, class U> inline bool operator==(shared_ptr<T> const & a, shared_ptr<U> const & b)
+{
+    return a.get() == b.get();
+}
+
+template<class T, class U> inline bool operator!=(shared_ptr<T> const & a, shared_ptr<U> const & b)
+{
+    return a.get() != b.get();
+}
+
+template<class T> inline bool operator<(shared_ptr<T> const & a, shared_ptr<T> const & b)
+{
+    return std::less<T*>()(a.get(), b.get());
+}
+
+template<class T> void swap(shared_ptr<T> & a, shared_ptr<T> & b)
+{
+    a.swap(b);
+}
+
+// get_pointer() enables boost::mem_fn to recognize shared_ptr
+
+template<class T> inline T * get_pointer(shared_ptr<T> const & p)
+{
+    return p.get();
+}
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SHARED_PTR_NMT_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_convertible.hpp
+++ b/include/boost/smart_ptr/detail/sp_convertible.hpp
@@ -0,0 +1,91 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_CONVERTIBLE_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_CONVERTIBLE_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  detail/sp_convertible.hpp
+//
+//  Copyright 2008 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/config.hpp>
+
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE ) && defined( BOOST_NO_SFINAE )
+# define BOOST_SP_NO_SP_CONVERTIBLE
+#endif
+
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE ) && defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ < 303 )
+# define BOOST_SP_NO_SP_CONVERTIBLE
+#endif
+
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE ) && defined( __BORLANDC__ ) && ( __BORLANDC__ < 0x630 )
+# define BOOST_SP_NO_SP_CONVERTIBLE
+#endif
+
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+namespace boost
+{
+
+namespace detail
+{
+
+template< class Y, class T > struct sp_convertible
+{
+    typedef char (&yes) [1];
+    typedef char (&no)  [2];
+
+    static yes f( T* );
+    static no  f( ... );
+
+    enum _vt { value = sizeof( (f)( static_cast<Y*>(0) ) ) == sizeof(yes) };
+};
+
+template< class Y, class T > struct sp_convertible< Y, T[] >
+{
+    enum _vt { value = false };
+};
+
+template< class Y, class T > struct sp_convertible< Y[], T[] >
+{
+    enum _vt { value = sp_convertible< Y[1], T[1] >::value };
+};
+
+template< class Y, std::size_t N, class T > struct sp_convertible< Y[N], T[] >
+{
+    enum _vt { value = sp_convertible< Y[1], T[1] >::value };
+};
+
+struct sp_empty
+{
+};
+
+template< bool > struct sp_enable_if_convertible_impl;
+
+template<> struct sp_enable_if_convertible_impl<true>
+{
+    typedef sp_empty type;
+};
+
+template<> struct sp_enable_if_convertible_impl<false>
+{
+};
+
+template< class Y, class T > struct sp_enable_if_convertible: public sp_enable_if_convertible_impl< sp_convertible< Y, T >::value >
+{
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif // !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_CONVERTIBLE_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base.hpp
@@ -0,0 +1,79 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/sp_counted_base.hpp
+//
+//  Copyright 2005, 2006 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/config.hpp>
+#include <boost/smart_ptr/detail/sp_has_sync.hpp>
+
+#if defined( BOOST_SP_DISABLE_THREADS )
+# include <boost/smart_ptr/detail/sp_counted_base_nt.hpp>
+
+#elif defined( BOOST_SP_USE_SPINLOCK )
+# include <boost/smart_ptr/detail/sp_counted_base_spin.hpp>
+
+#elif defined( BOOST_SP_USE_PTHREADS )
+# include <boost/smart_ptr/detail/sp_counted_base_pt.hpp>
+
+#elif defined( BOOST_DISABLE_THREADS ) && !defined( BOOST_SP_ENABLE_THREADS ) && !defined( BOOST_DISABLE_WIN32 )
+# include <boost/smart_ptr/detail/sp_counted_base_nt.hpp>
+
+#elif defined( __SNC__ )
+# include <boost/smart_ptr/detail/sp_counted_base_snc_ps3.hpp>
+
+#elif defined( __GNUC__ ) && ( defined( __i386__ ) || defined( __x86_64__ ) ) && !defined(__PATHSCALE__)
+# include <boost/smart_ptr/detail/sp_counted_base_gcc_x86.hpp>
+
+#elif defined(__HP_aCC) && defined(__ia64)
+# include <boost/smart_ptr/detail/sp_counted_base_acc_ia64.hpp>
+
+#elif defined( __GNUC__ ) && defined( __ia64__ ) && !defined( __INTEL_COMPILER ) && !defined(__PATHSCALE__)
+# include <boost/smart_ptr/detail/sp_counted_base_gcc_ia64.hpp>
+
+#elif defined( __IBMCPP__ ) && defined( __powerpc )
+# include <boost/smart_ptr/detail/sp_counted_base_vacpp_ppc.hpp>
+
+#elif defined( __MWERKS__ ) && defined( __POWERPC__ )
+# include <boost/smart_ptr/detail/sp_counted_base_cw_ppc.hpp>
+
+#elif defined( __GNUC__ ) && ( defined( __powerpc__ ) || defined( __ppc__ ) || defined( __ppc ) ) && !defined(__PATHSCALE__) && !defined( _AIX )
+# include <boost/smart_ptr/detail/sp_counted_base_gcc_ppc.hpp>
+
+#elif defined( __GNUC__ ) && ( defined( __mips__ ) || defined( _mips ) ) && !defined(__PATHSCALE__)
+# include <boost/smart_ptr/detail/sp_counted_base_gcc_mips.hpp>
+
+#elif defined( BOOST_SP_HAS_SYNC )
+# include <boost/smart_ptr/detail/sp_counted_base_sync.hpp>
+
+#elif defined(__GNUC__) && ( defined( __sparcv9 ) || ( defined( __sparcv8 ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 402 ) ) )
+# include <boost/smart_ptr/detail/sp_counted_base_gcc_sparc.hpp>
+
+#elif defined( WIN32 ) || defined( _WIN32 ) || defined( __WIN32__ ) || defined(__CYGWIN__)
+# include <boost/smart_ptr/detail/sp_counted_base_w32.hpp>
+
+#elif defined( _AIX )
+# include <boost/smart_ptr/detail/sp_counted_base_aix.hpp>
+
+#elif !defined( BOOST_HAS_THREADS )
+# include <boost/smart_ptr/detail/sp_counted_base_nt.hpp>
+
+#else
+# include <boost/smart_ptr/detail/sp_counted_base_spin.hpp>
+
+#endif
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_acc_ia64.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_acc_ia64.hpp
@@ -0,0 +1,151 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_ACC_IA64_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_ACC_IA64_HPP_INCLUDED
+
+//
+//  detail/sp_counted_base_acc_ia64.hpp - aC++ on HP-UX IA64
+//
+//  Copyright 2007 Baruch Zilber
+//  Copyright 2007 Boris Gubenko
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//
+//  Lock-free algorithm by Alexander Terekhov
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+#include <machine/sys/inline.h>
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline void atomic_increment( int * pw )
+{
+    // ++*pw;
+
+    _Asm_fetchadd(_FASZ_W, _SEM_REL, pw, +1, _LDHINT_NONE);
+} 
+
+inline int atomic_decrement( int * pw )
+{
+    // return --*pw;
+
+    int r = static_cast<int>(_Asm_fetchadd(_FASZ_W, _SEM_REL, pw, -1, _LDHINT_NONE));
+    if (1 == r)
+    {
+        _Asm_mf();
+    }
+    
+    return r - 1;
+}
+
+inline int atomic_conditional_increment( int * pw )
+{
+    // if( *pw != 0 ) ++*pw;
+    // return *pw;
+
+    int v = *pw;
+    
+    for (;;)
+    {
+        if (0 == v)
+        {
+            return 0;
+        }
+        
+        _Asm_mov_to_ar(_AREG_CCV,
+                       v,
+                       (_UP_CALL_FENCE | _UP_SYS_FENCE | _DOWN_CALL_FENCE | _DOWN_SYS_FENCE));
+        int r = static_cast<int>(_Asm_cmpxchg(_SZ_W, _SEM_ACQ, pw, v + 1, _LDHINT_NONE));
+        if (r == v)
+        {
+            return r + 1;
+        }
+        
+        v = r;
+    }
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    int use_count_;        // #shared
+    int weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_decrement( &use_count_ ) == 0 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_decrement( &weak_count_ ) == 0 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return static_cast<int const volatile &>( use_count_ ); // TODO use ld.acq here
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_ACC_IA64_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_aix.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_aix.hpp
@@ -0,0 +1,143 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_AIX_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_AIX_HPP_INCLUDED
+
+//
+//  detail/sp_counted_base_aix.hpp
+//   based on: detail/sp_counted_base_w32.hpp
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2005 Peter Dimov
+//  Copyright 2006 Michael van der Westhuizen
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//
+//  Lock-free algorithm by Alexander Terekhov
+//
+//  Thanks to Ben Hitchings for the #weak + (#shared != 0)
+//  formulation
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+#include <builtins.h>
+#include <sys/atomic_op.h>
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline void atomic_increment( int32_t* pw )
+{
+    // ++*pw;
+
+    fetch_and_add( pw, 1 );
+}
+
+inline int32_t atomic_decrement( int32_t * pw )
+{
+    // return --*pw;
+
+    int32_t originalValue;
+
+    __lwsync();
+    originalValue = fetch_and_add( pw, -1 );
+    __isync();
+
+    return (originalValue - 1);
+}
+
+inline int32_t atomic_conditional_increment( int32_t * pw )
+{
+    // if( *pw != 0 ) ++*pw;
+    // return *pw;
+
+    int32_t tmp = fetch_and_add( pw, 0 );
+    for( ;; )
+    {
+        if( tmp == 0 ) return 0;
+        if( compare_and_swap( pw, &tmp, tmp + 1 ) ) return (tmp + 1);
+    }
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    int32_t use_count_;        // #shared
+    int32_t weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_decrement( &use_count_ ) == 0 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_decrement( &weak_count_ ) == 0 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return fetch_and_add( const_cast<int32_t*>(&use_count_), 0 );
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_AIX_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_cw_ppc.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_cw_ppc.hpp
@@ -0,0 +1,171 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_CW_PPC_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_CW_PPC_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/sp_counted_base_cw_ppc.hpp - CodeWarrior on PowerPC
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2005 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//
+//  Lock-free algorithm by Alexander Terekhov
+//
+//  Thanks to Ben Hitchings for the #weak + (#shared != 0)
+//  formulation
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline void atomic_increment( register long * pw )
+{
+    register int a;
+
+    asm
+    {
+loop:
+
+    lwarx   a, 0, pw
+    addi    a, a, 1
+    stwcx.  a, 0, pw
+    bne-    loop
+    }
+}
+
+inline long atomic_decrement( register long * pw )
+{
+    register int a;
+
+    asm
+    {
+    sync
+
+loop:
+
+    lwarx   a, 0, pw
+    addi    a, a, -1
+    stwcx.  a, 0, pw
+    bne-    loop
+
+    isync
+    }
+
+    return a;
+}
+
+inline long atomic_conditional_increment( register long * pw )
+{
+    register int a;
+
+    asm
+    {
+loop:
+
+    lwarx   a, 0, pw
+    cmpwi   a, 0
+    beq     store
+
+    addi    a, a, 1
+
+store:
+
+    stwcx.  a, 0, pw
+    bne-    loop
+    }
+
+    return a;
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    long use_count_;        // #shared
+    long weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_decrement( &use_count_ ) == 0 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_decrement( &weak_count_ ) == 0 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return static_cast<long const volatile &>( use_count_ );
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_CW_PPC_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_cw_x86.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_cw_x86.hpp
@@ -0,0 +1,159 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_CW_X86_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_CW_X86_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/sp_counted_base_cw_x86.hpp - CodeWarrion on 486+
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2005 Peter Dimov
+//  Copyright 2005 Rene Rivera
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//
+//  Lock-free algorithm by Alexander Terekhov
+//
+//  Thanks to Ben Hitchings for the #weak + (#shared != 0)
+//  formulation
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline int atomic_exchange_and_add( int * pw, int dv )
+{
+    // int r = *pw;
+    // *pw += dv;
+    // return r;
+
+    asm
+    {
+        mov esi, [pw]
+        mov eax, dv
+        lock xadd dword ptr [esi], eax
+    }
+}
+
+inline void atomic_increment( int * pw )
+{
+    //atomic_exchange_and_add( pw, 1 );
+
+    asm
+    {
+        mov esi, [pw]
+        lock inc dword ptr [esi]
+    }
+}
+
+inline int atomic_conditional_increment( int * pw )
+{
+    // int rv = *pw;
+    // if( rv != 0 ) ++*pw;
+    // return rv;
+
+    asm
+    {
+        mov esi, [pw]
+        mov eax, dword ptr [esi]
+    L0:
+        test eax, eax
+        je L1
+        mov ebx, eax
+        inc ebx
+        lock cmpxchg dword ptr [esi], ebx
+        jne L0
+    L1:
+    }
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    int use_count_;        // #shared
+    int weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_exchange_and_add( &use_count_, -1 ) == 1 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_exchange_and_add( &weak_count_, -1 ) == 1 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return static_cast<int const volatile &>( use_count_ );
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_CW_X86_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_gcc_ia64.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_gcc_ia64.hpp
@@ -0,0 +1,158 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_IA64_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_IA64_HPP_INCLUDED
+
+//
+//  detail/sp_counted_base_gcc_ia64.hpp - g++ on IA64
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2006 Peter Dimov
+//  Copyright 2005 Ben Hutchings
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//
+//  Lock-free algorithm by Alexander Terekhov
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline void atomic_increment( int * pw )
+{
+    // ++*pw;
+
+    int tmp;
+
+    // No barrier is required here but fetchadd always has an acquire or
+    // release barrier associated with it.  We choose release as it should be
+    // cheaper.
+    __asm__ ("fetchadd4.rel %0=%1,1" :
+         "=r"(tmp), "=m"(*pw) :
+         "m"( *pw ));
+}
+
+inline int atomic_decrement( int * pw )
+{
+    // return --*pw;
+
+    int rv;
+
+    __asm__ ("     fetchadd4.rel %0=%1,-1 ;; \n"
+             "     cmp.eq        p7,p0=1,%0 ;; \n"
+             "(p7) ld4.acq       %0=%1    " :
+             "=&r"(rv), "=m"(*pw) :
+             "m"( *pw ) :
+             "p7");
+
+    return rv;
+}
+
+inline int atomic_conditional_increment( int * pw )
+{
+    // if( *pw != 0 ) ++*pw;
+    // return *pw;
+
+    int rv, tmp, tmp2;
+
+    __asm__ ("0:   ld4          %0=%3           ;; \n"
+         "     cmp.eq       p7,p0=0,%0        ;; \n"
+         "(p7) br.cond.spnt 1f                \n"
+         "     mov          ar.ccv=%0         \n"
+         "     add          %1=1,%0           ;; \n"
+         "     cmpxchg4.acq %2=%3,%1,ar.ccv ;; \n"
+         "     cmp.ne       p7,p0=%0,%2       ;; \n"
+         "(p7) br.cond.spnt 0b                \n"
+         "     mov          %0=%1             ;; \n"
+         "1:" : 
+         "=&r"(rv), "=&r"(tmp), "=&r"(tmp2), "=m"(*pw) :
+         "m"( *pw ) :
+         "ar.ccv", "p7");
+
+    return rv;
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    int use_count_;        // #shared
+    int weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_decrement( &use_count_ ) == 0 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_decrement( &weak_count_ ) == 0 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return static_cast<int const volatile &>( use_count_ ); // TODO use ld.acq here
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_IA64_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_gcc_mips.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_gcc_mips.hpp
@@ -0,0 +1,182 @@
+#ifndef BOOST_DETAIL_SP_COUNTED_BASE_GCC_MIPS_HPP_INCLUDED
+#define BOOST_DETAIL_SP_COUNTED_BASE_GCC_MIPS_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/sp_counted_base_gcc_mips.hpp - g++ on MIPS
+//
+//  Copyright (c) 2009, Spirent Communications, Inc.
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//
+//  Lock-free algorithm by Alexander Terekhov
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline void atomic_increment( int * pw )
+{
+    // ++*pw;
+
+    int tmp;
+
+    __asm__ __volatile__
+    (
+        "0:\n\t"
+        ".set push\n\t"
+        ".set mips2\n\t"
+        "ll %0, %1\n\t"
+        "addiu %0, 1\n\t"
+        "sc %0, %1\n\t"
+        ".set pop\n\t"
+        "beqz %0, 0b":
+        "=&r"( tmp ), "=m"( *pw ):
+        "m"( *pw )
+    );
+}
+
+inline int atomic_decrement( int * pw )
+{
+    // return --*pw;
+
+    int rv, tmp;
+
+    __asm__ __volatile__
+    (
+        "0:\n\t"
+        ".set push\n\t"
+        ".set mips2\n\t"
+        "ll %1, %2\n\t"
+        "addiu %0, %1, -1\n\t"
+        "sc %0, %2\n\t"
+        ".set pop\n\t"
+        "beqz %0, 0b\n\t"
+        "addiu %0, %1, -1":
+        "=&r"( rv ), "=&r"( tmp ), "=m"( *pw ):
+        "m"( *pw ):
+        "memory"
+    );
+
+    return rv;
+}
+
+inline int atomic_conditional_increment( int * pw )
+{
+    // if( *pw != 0 ) ++*pw;
+    // return *pw;
+
+    int rv, tmp;
+
+    __asm__ __volatile__
+    (
+        "0:\n\t"
+        ".set push\n\t"
+        ".set mips2\n\t"
+        "ll %0, %2\n\t"
+        "beqz %0, 1f\n\t"
+        "addiu %1, %0, 1\n\t"
+        "sc %1, %2\n\t"
+        ".set pop\n\t"
+        "beqz %1, 0b\n\t"
+        "addiu %0, %0, 1\n\t"
+        "1:":
+        "=&r"( rv ), "=&r"( tmp ), "=m"( *pw ):
+        "m"( *pw ):
+        "memory"
+    );
+
+    return rv;
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    int use_count_;        // #shared
+    int weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_decrement( &use_count_ ) == 0 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_decrement( &weak_count_ ) == 0 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return static_cast<int const volatile &>( use_count_ );
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_GCC_MIPS_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_gcc_ppc.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_gcc_ppc.hpp
@@ -0,0 +1,182 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_PPC_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_PPC_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/sp_counted_base_gcc_ppc.hpp - g++ on PowerPC
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2005 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//
+//  Lock-free algorithm by Alexander Terekhov
+//
+//  Thanks to Ben Hitchings for the #weak + (#shared != 0)
+//  formulation
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline void atomic_increment( int * pw )
+{
+    // ++*pw;
+
+    int tmp;
+
+    __asm__
+    (
+        "0:\n\t"
+        "lwarx %1, 0, %2\n\t"
+        "addi %1, %1, 1\n\t"
+        "stwcx. %1, 0, %2\n\t"
+        "bne- 0b":
+
+        "=m"( *pw ), "=&b"( tmp ):
+        "r"( pw ), "m"( *pw ):
+        "cc"
+    );
+}
+
+inline int atomic_decrement( int * pw )
+{
+    // return --*pw;
+
+    int rv;
+
+    __asm__ __volatile__
+    (
+        "sync\n\t"
+        "0:\n\t"
+        "lwarx %1, 0, %2\n\t"
+        "addi %1, %1, -1\n\t"
+        "stwcx. %1, 0, %2\n\t"
+        "bne- 0b\n\t"
+        "isync":
+
+        "=m"( *pw ), "=&b"( rv ):
+        "r"( pw ), "m"( *pw ):
+        "memory", "cc"
+    );
+
+    return rv;
+}
+
+inline int atomic_conditional_increment( int * pw )
+{
+    // if( *pw != 0 ) ++*pw;
+    // return *pw;
+
+    int rv;
+
+    __asm__
+    (
+        "0:\n\t"
+        "lwarx %1, 0, %2\n\t"
+        "cmpwi %1, 0\n\t"
+        "beq 1f\n\t"
+        "addi %1, %1, 1\n\t"
+        "1:\n\t"
+        "stwcx. %1, 0, %2\n\t"
+        "bne- 0b":
+
+        "=m"( *pw ), "=&b"( rv ):
+        "r"( pw ), "m"( *pw ):
+        "cc"
+    );
+
+    return rv;
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    int use_count_;        // #shared
+    int weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_decrement( &use_count_ ) == 0 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_decrement( &weak_count_ ) == 0 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return static_cast<int const volatile &>( use_count_ );
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_PPC_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_gcc_sparc.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_gcc_sparc.hpp
@@ -0,0 +1,167 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_SPARC_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_SPARC_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  detail/sp_counted_base_gcc_sparc.hpp - g++ on Sparc V8+
+//
+//  Copyright (c) 2006 Piotr Wyderski
+//  Copyright (c) 2006 Tomas Puverle
+//  Copyright (c) 2006 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  Thanks to Michael van der Westhuizen
+
+#include <boost/detail/sp_typeinfo.hpp>
+#include <inttypes.h> // int32_t
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline int32_t compare_and_swap( int32_t * dest_, int32_t compare_, int32_t swap_ )
+{
+    __asm__ __volatile__( "cas [%1], %2, %0"
+                        : "+r" (swap_)
+                        : "r" (dest_), "r" (compare_)
+                        : "memory" );
+
+    return swap_;
+}
+
+inline int32_t atomic_fetch_and_add( int32_t * pw, int32_t dv )
+{
+    // long r = *pw;
+    // *pw += dv;
+    // return r;
+
+    for( ;; )
+    {
+        int32_t r = *pw;
+
+        if( __builtin_expect((compare_and_swap(pw, r, r + dv) == r), 1) )
+        {
+            return r;
+        }
+    }
+}
+
+inline void atomic_increment( int32_t * pw )
+{
+    atomic_fetch_and_add( pw, 1 );
+}
+
+inline int32_t atomic_decrement( int32_t * pw )
+{
+    return atomic_fetch_and_add( pw, -1 );
+}
+
+inline int32_t atomic_conditional_increment( int32_t * pw )
+{
+    // long r = *pw;
+    // if( r != 0 ) ++*pw;
+    // return r;
+
+    for( ;; )
+    {
+        int32_t r = *pw;
+
+        if( r == 0 )
+        {
+            return r;
+        }
+
+        if( __builtin_expect( ( compare_and_swap( pw, r, r + 1 ) == r ), 1 ) )
+        {
+            return r;
+        }
+    }    
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    int32_t use_count_;        // #shared
+    int32_t weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_decrement( &use_count_ ) == 1 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_decrement( &weak_count_ ) == 1 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return const_cast< int32_t const volatile & >( use_count_ );
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_SPARC_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_gcc_x86.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_gcc_x86.hpp
@@ -0,0 +1,174 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_X86_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_X86_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/sp_counted_base_gcc_x86.hpp - g++ on 486+ or AMD64
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2005 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//
+//  Lock-free algorithm by Alexander Terekhov
+//
+//  Thanks to Ben Hitchings for the #weak + (#shared != 0)
+//  formulation
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline int atomic_exchange_and_add( int * pw, int dv )
+{
+    // int r = *pw;
+    // *pw += dv;
+    // return r;
+
+    int r;
+
+    __asm__ __volatile__
+    (
+        "lock\n\t"
+        "xadd %1, %0":
+        "=m"( *pw ), "=r"( r ): // outputs (%0, %1)
+        "m"( *pw ), "1"( dv ): // inputs (%2, %3 == %1)
+        "memory", "cc" // clobbers
+    );
+
+    return r;
+}
+
+inline void atomic_increment( int * pw )
+{
+    //atomic_exchange_and_add( pw, 1 );
+
+    __asm__
+    (
+        "lock\n\t"
+        "incl %0":
+        "=m"( *pw ): // output (%0)
+        "m"( *pw ): // input (%1)
+        "cc" // clobbers
+    );
+}
+
+inline int atomic_conditional_increment( int * pw )
+{
+    // int rv = *pw;
+    // if( rv != 0 ) ++*pw;
+    // return rv;
+
+    int rv, tmp;
+
+    __asm__
+    (
+        "movl %0, %%eax\n\t"
+        "0:\n\t"
+        "test %%eax, %%eax\n\t"
+        "je 1f\n\t"
+        "movl %%eax, %2\n\t"
+        "incl %2\n\t"
+        "lock\n\t"
+        "cmpxchgl %2, %0\n\t"
+        "jne 0b\n\t"
+        "1:":
+        "=m"( *pw ), "=&a"( rv ), "=&r"( tmp ): // outputs (%0, %1, %2)
+        "m"( *pw ): // input (%3)
+        "cc" // clobbers
+    );
+
+    return rv;
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    int use_count_;        // #shared
+    int weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_exchange_and_add( &use_count_, -1 ) == 1 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_exchange_and_add( &weak_count_, -1 ) == 1 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return static_cast<int const volatile &>( use_count_ );
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_X86_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_nt.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_nt.hpp
@@ -0,0 +1,108 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_NT_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_NT_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/sp_counted_base_nt.hpp
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2005 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    long use_count_;        // #shared
+    long weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        ++use_count_;
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        if( use_count_ == 0 ) return false;
+        ++use_count_;
+        return true;
+    }
+
+    void release() // nothrow
+    {
+        if( --use_count_ == 0 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        ++weak_count_;
+    }
+
+    void weak_release() // nothrow
+    {
+        if( --weak_count_ == 0 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return use_count_;
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_NT_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_pt.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_pt.hpp
@@ -0,0 +1,136 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/sp_counted_base_pt.hpp
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2005 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+#include <pthread.h>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    long use_count_;        // #shared
+    long weak_count_;       // #weak + (#shared != 0)
+
+    mutable pthread_mutex_t m_;
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+// HPUX 10.20 / DCE has a nonstandard pthread_mutex_init
+
+#if defined(__hpux) && defined(_DECTHREADS_)
+        pthread_mutex_init( &m_, pthread_mutexattr_default );
+#else
+        pthread_mutex_init( &m_, 0 );
+#endif
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+        pthread_mutex_destroy( &m_ );
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        pthread_mutex_lock( &m_ );
+        ++use_count_;
+        pthread_mutex_unlock( &m_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        pthread_mutex_lock( &m_ );
+        bool r = use_count_ == 0? false: ( ++use_count_, true );
+        pthread_mutex_unlock( &m_ );
+        return r;
+    }
+
+    void release() // nothrow
+    {
+        pthread_mutex_lock( &m_ );
+        long new_use_count = --use_count_;
+        pthread_mutex_unlock( &m_ );
+
+        if( new_use_count == 0 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        pthread_mutex_lock( &m_ );
+        ++weak_count_;
+        pthread_mutex_unlock( &m_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        pthread_mutex_lock( &m_ );
+        long new_weak_count = --weak_count_;
+        pthread_mutex_unlock( &m_ );
+
+        if( new_weak_count == 0 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        pthread_mutex_lock( &m_ );
+        long r = use_count_;
+        pthread_mutex_unlock( &m_ );
+
+        return r;
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_snc_ps3.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_snc_ps3.hpp
@@ -0,0 +1,162 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SNC_PS3_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SNC_PS3_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  detail/sp_counted_base_gcc_sparc.hpp - g++ on Sparc V8+
+//
+//  Copyright (c) 2006 Piotr Wyderski
+//  Copyright (c) 2006 Tomas Puverle
+//  Copyright (c) 2006 Peter Dimov
+//  Copyright (c) 2011 Emil Dotchevski
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  Thanks to Michael van der Westhuizen
+
+#include <boost/detail/sp_typeinfo.hpp>
+#include <inttypes.h> // uint32_t
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline uint32_t compare_and_swap( uint32_t * dest_, uint32_t compare_, uint32_t swap_ )
+{
+    return __builtin_cellAtomicCompareAndSwap32(dest_,compare_,swap_);
+}
+
+inline uint32_t atomic_fetch_and_add( uint32_t * pw, uint32_t dv )
+{
+    // long r = *pw;
+    // *pw += dv;
+    // return r;
+
+    for( ;; )
+    {
+        uint32_t r = *pw;
+
+        if( __builtin_expect((compare_and_swap(pw, r, r + dv) == r), 1) )
+        {
+            return r;
+        }
+    }
+}
+
+inline void atomic_increment( uint32_t * pw )
+{
+    (void) __builtin_cellAtomicIncr32( pw );
+}
+
+inline uint32_t atomic_decrement( uint32_t * pw )
+{
+    return __builtin_cellAtomicDecr32( pw );
+}
+
+inline uint32_t atomic_conditional_increment( uint32_t * pw )
+{
+    // long r = *pw;
+    // if( r != 0 ) ++*pw;
+    // return r;
+
+    for( ;; )
+    {
+        uint32_t r = *pw;
+
+        if( r == 0 )
+        {
+            return r;
+        }
+
+        if( __builtin_expect( ( compare_and_swap( pw, r, r + 1 ) == r ), 1 ) )
+        {
+            return r;
+        }
+    }    
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    uint32_t use_count_;        // #shared
+    uint32_t weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_decrement( &use_count_ ) == 1 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_decrement( &weak_count_ ) == 1 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return const_cast< uint32_t const volatile & >( use_count_ );
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SNC_PS3_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_solaris.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_solaris.hpp
@@ -0,0 +1,114 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SOLARIS_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SOLARIS_HPP_INCLUDED
+
+//
+//  detail/sp_counted_base_solaris.hpp
+//   based on: detail/sp_counted_base_w32.hpp
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2005 Peter Dimov
+//  Copyright 2006 Michael van der Westhuizen
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//
+//  Lock-free algorithm by Alexander Terekhov
+//
+//  Thanks to Ben Hitchings for the #weak + (#shared != 0)
+//  formulation
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+#include <atomic.h>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    uint32_t use_count_;        // #shared
+    uint32_t weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_inc_32( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        for( ;; )
+        {
+            uint32_t tmp = static_cast< uint32_t const volatile& >( use_count_ );
+            if( tmp == 0 ) return false;
+            if( atomic_cas_32( &use_count_, tmp, tmp + 1 ) == tmp ) return true;
+        }
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_dec_32_nv( &use_count_ ) == 0 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_inc_32( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_dec_32_nv( &weak_count_ ) == 0 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return static_cast<long const volatile &>( use_count_ );
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SOLARIS_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_spin.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_spin.hpp
@@ -0,0 +1,132 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SPIN_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SPIN_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/sp_counted_base_spin.hpp - spinlock pool atomic emulation
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2008 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+#include <boost/smart_ptr/detail/spinlock_pool.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline int atomic_exchange_and_add( int * pw, int dv )
+{
+    spinlock_pool<1>::scoped_lock lock( pw );
+
+    int r = *pw;
+    *pw += dv;
+    return r;
+}
+
+inline void atomic_increment( int * pw )
+{
+    spinlock_pool<1>::scoped_lock lock( pw );
+    ++*pw;
+}
+
+inline int atomic_conditional_increment( int * pw )
+{
+    spinlock_pool<1>::scoped_lock lock( pw );
+
+    int rv = *pw;
+    if( rv != 0 ) ++*pw;
+    return rv;
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    int use_count_;        // #shared
+    int weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_exchange_and_add( &use_count_, -1 ) == 1 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_exchange_and_add( &weak_count_, -1 ) == 1 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        spinlock_pool<1>::scoped_lock lock( &use_count_ );
+        return use_count_;
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SPIN_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_sync.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_sync.hpp
@@ -0,0 +1,156 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SYNC_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SYNC_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  detail/sp_counted_base_sync.hpp - g++ 4.1+ __sync intrinsics
+//
+//  Copyright (c) 2007 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/detail/sp_typeinfo.hpp>
+#include <limits.h>
+
+#if defined( __ia64__ ) && defined( __INTEL_COMPILER )
+# include <ia64intrin.h>
+#endif
+
+namespace boost
+{
+
+namespace detail
+{
+
+#if INT_MAX >= 2147483647
+
+typedef int sp_int32_t;
+
+#else
+
+typedef long sp_int32_t;
+
+#endif
+
+inline void atomic_increment( sp_int32_t * pw )
+{
+    __sync_fetch_and_add( pw, 1 );
+}
+
+inline sp_int32_t atomic_decrement( sp_int32_t * pw )
+{
+    return __sync_fetch_and_add( pw, -1 );
+}
+
+inline sp_int32_t atomic_conditional_increment( sp_int32_t * pw )
+{
+    // long r = *pw;
+    // if( r != 0 ) ++*pw;
+    // return r;
+
+    sp_int32_t r = *pw;
+
+    for( ;; )
+    {
+        if( r == 0 )
+        {
+            return r;
+        }
+
+        sp_int32_t r2 = __sync_val_compare_and_swap( pw, r, r + 1 );
+
+        if( r2 == r )
+        {
+            return r;
+        }
+        else
+        {
+            r = r2;
+        }
+    }    
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    sp_int32_t use_count_;        // #shared
+    sp_int32_t weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_decrement( &use_count_ ) == 1 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_decrement( &weak_count_ ) == 1 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return const_cast< sp_int32_t const volatile & >( use_count_ );
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SYNC_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_vacpp_ppc.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_vacpp_ppc.hpp
@@ -0,0 +1,151 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_VACPP_PPC_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_VACPP_PPC_HPP_INCLUDED
+
+//
+//  detail/sp_counted_base_vacpp_ppc.hpp - xlC(vacpp) on POWER
+//   based on: detail/sp_counted_base_w32.hpp
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2005 Peter Dimov
+//  Copyright 2006 Michael van der Westhuizen
+//  Copyright 2012 IBM Corp.
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//
+//  Lock-free algorithm by Alexander Terekhov
+//
+//  Thanks to Ben Hitchings for the #weak + (#shared != 0)
+//  formulation
+//
+
+#include <boost/detail/sp_typeinfo.hpp>
+
+extern "builtin" void __lwsync(void);
+extern "builtin" void __isync(void);
+extern "builtin" int __fetch_and_add(volatile int* addr, int val);
+extern "builtin" int __compare_and_swap(volatile int*, int*, int);
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline void atomic_increment( int *pw )
+{
+   // ++*pw;
+   __lwsync();
+   __fetch_and_add(pw, 1);
+   __isync();
+} 
+
+inline int atomic_decrement( int *pw )
+{
+   // return --*pw;
+   __lwsync();
+   int originalValue = __fetch_and_add(pw, -1);
+   __isync();
+
+   return (originalValue - 1);
+}
+
+inline int atomic_conditional_increment( int *pw )
+{
+   // if( *pw != 0 ) ++*pw;
+   // return *pw;
+
+   __lwsync();
+   int v = *const_cast<volatile int*>(pw);
+   for (;;)
+   // loop until state is known
+   {
+      if (v == 0) return 0;
+      if (__compare_and_swap(pw, &v, v + 1))
+      {
+         __isync(); return (v + 1);
+      }
+   }
+}
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    int use_count_;        // #shared
+    int weak_count_;       // #weak + (#shared != 0)
+    char pad[64] __attribute__((__aligned__(64)));
+            // pad to prevent false sharing
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        atomic_increment( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        return atomic_conditional_increment( &use_count_ ) != 0;
+    }
+
+    void release() // nothrow
+    {
+        if( atomic_decrement( &use_count_ ) == 0 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        atomic_increment( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( atomic_decrement( &weak_count_ ) == 0 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return *const_cast<volatile int*>(&use_count_); 
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_VACPP_PPC_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_base_w32.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_w32.hpp
@@ -0,0 +1,131 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_W32_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_W32_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/sp_counted_base_w32.hpp
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2005 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//
+//  Lock-free algorithm by Alexander Terekhov
+//
+//  Thanks to Ben Hitchings for the #weak + (#shared != 0)
+//  formulation
+//
+
+#include <boost/detail/interlocked.hpp>
+#include <boost/detail/workaround.hpp>
+#include <boost/detail/sp_typeinfo.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class sp_counted_base
+{
+private:
+
+    sp_counted_base( sp_counted_base const & );
+    sp_counted_base & operator= ( sp_counted_base const & );
+
+    long use_count_;        // #shared
+    long weak_count_;       // #weak + (#shared != 0)
+
+public:
+
+    sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+    {
+    }
+
+    virtual ~sp_counted_base() // nothrow
+    {
+    }
+
+    // dispose() is called when use_count_ drops to zero, to release
+    // the resources managed by *this.
+
+    virtual void dispose() = 0; // nothrow
+
+    // destroy() is called when weak_count_ drops to zero.
+
+    virtual void destroy() // nothrow
+    {
+        delete this;
+    }
+
+    virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+    virtual void * get_untyped_deleter() = 0;
+
+    void add_ref_copy()
+    {
+        BOOST_INTERLOCKED_INCREMENT( &use_count_ );
+    }
+
+    bool add_ref_lock() // true on success
+    {
+        for( ;; )
+        {
+            long tmp = static_cast< long const volatile& >( use_count_ );
+            if( tmp == 0 ) return false;
+
+#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, == 1200 )
+
+            // work around a code generation bug
+
+            long tmp2 = tmp + 1;
+            if( BOOST_INTERLOCKED_COMPARE_EXCHANGE( &use_count_, tmp2, tmp ) == tmp2 - 1 ) return true;
+
+#else
+
+            if( BOOST_INTERLOCKED_COMPARE_EXCHANGE( &use_count_, tmp + 1, tmp ) == tmp ) return true;
+
+#endif
+        }
+    }
+
+    void release() // nothrow
+    {
+        if( BOOST_INTERLOCKED_DECREMENT( &use_count_ ) == 0 )
+        {
+            dispose();
+            weak_release();
+        }
+    }
+
+    void weak_add_ref() // nothrow
+    {
+        BOOST_INTERLOCKED_INCREMENT( &weak_count_ );
+    }
+
+    void weak_release() // nothrow
+    {
+        if( BOOST_INTERLOCKED_DECREMENT( &weak_count_ ) == 0 )
+        {
+            destroy();
+        }
+    }
+
+    long use_count() const // nothrow
+    {
+        return static_cast<long const volatile &>( use_count_ );
+    }
+};
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_W32_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_counted_impl.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_impl.hpp
@@ -0,0 +1,254 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  detail/sp_counted_impl.hpp
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+//  Copyright 2004-2005 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/config.hpp>
+
+#if defined(BOOST_SP_USE_STD_ALLOCATOR) && defined(BOOST_SP_USE_QUICK_ALLOCATOR)
+# error BOOST_SP_USE_STD_ALLOCATOR and BOOST_SP_USE_QUICK_ALLOCATOR are incompatible.
+#endif
+
+#include <boost/checked_delete.hpp>
+#include <boost/smart_ptr/detail/sp_counted_base.hpp>
+
+#if defined(BOOST_SP_USE_QUICK_ALLOCATOR)
+#include <boost/smart_ptr/detail/quick_allocator.hpp>
+#endif
+
+#if defined(BOOST_SP_USE_STD_ALLOCATOR)
+#include <memory>           // std::allocator
+#endif
+
+#include <cstddef>          // std::size_t
+
+namespace boost
+{
+
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+
+void sp_scalar_constructor_hook( void * px, std::size_t size, void * pn );
+void sp_scalar_destructor_hook( void * px, std::size_t size, void * pn );
+
+#endif
+
+namespace detail
+{
+
+template<class X> class sp_counted_impl_p: public sp_counted_base
+{
+private:
+
+    X * px_;
+
+    sp_counted_impl_p( sp_counted_impl_p const & );
+    sp_counted_impl_p & operator= ( sp_counted_impl_p const & );
+
+    typedef sp_counted_impl_p<X> this_type;
+
+public:
+
+    explicit sp_counted_impl_p( X * px ): px_( px )
+    {
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        boost::sp_scalar_constructor_hook( px, sizeof(X), this );
+#endif
+    }
+
+    virtual void dispose() // nothrow
+    {
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        boost::sp_scalar_destructor_hook( px_, sizeof(X), this );
+#endif
+        boost::checked_delete( px_ );
+    }
+
+    virtual void * get_deleter( detail::sp_typeinfo const & )
+    {
+        return 0;
+    }
+
+    virtual void * get_untyped_deleter()
+    {
+        return 0;
+    }
+
+#if defined(BOOST_SP_USE_STD_ALLOCATOR)
+
+    void * operator new( std::size_t )
+    {
+        return std::allocator<this_type>().allocate( 1, static_cast<this_type *>(0) );
+    }
+
+    void operator delete( void * p )
+    {
+        std::allocator<this_type>().deallocate( static_cast<this_type *>(p), 1 );
+    }
+
+#endif
+
+#if defined(BOOST_SP_USE_QUICK_ALLOCATOR)
+
+    void * operator new( std::size_t )
+    {
+        return quick_allocator<this_type>::alloc();
+    }
+
+    void operator delete( void * p )
+    {
+        quick_allocator<this_type>::dealloc( p );
+    }
+
+#endif
+};
+
+//
+// Borland's Codeguard trips up over the -Vx- option here:
+//
+#ifdef __CODEGUARD__
+# pragma option push -Vx-
+#endif
+
+template<class P, class D> class sp_counted_impl_pd: public sp_counted_base
+{
+private:
+
+    P ptr; // copy constructor must not throw
+    D del; // copy constructor must not throw
+
+    sp_counted_impl_pd( sp_counted_impl_pd const & );
+    sp_counted_impl_pd & operator= ( sp_counted_impl_pd const & );
+
+    typedef sp_counted_impl_pd<P, D> this_type;
+
+public:
+
+    // pre: d(p) must not throw
+
+    sp_counted_impl_pd( P p, D & d ): ptr( p ), del( d )
+    {
+    }
+
+    sp_counted_impl_pd( P p ): ptr( p ), del()
+    {
+    }
+
+    virtual void dispose() // nothrow
+    {
+        del( ptr );
+    }
+
+    virtual void * get_deleter( detail::sp_typeinfo const & ti )
+    {
+        return ti == BOOST_SP_TYPEID(D)? &reinterpret_cast<char&>( del ): 0;
+    }
+
+    virtual void * get_untyped_deleter()
+    {
+        return &reinterpret_cast<char&>( del );
+    }
+
+#if defined(BOOST_SP_USE_STD_ALLOCATOR)
+
+    void * operator new( std::size_t )
+    {
+        return std::allocator<this_type>().allocate( 1, static_cast<this_type *>(0) );
+    }
+
+    void operator delete( void * p )
+    {
+        std::allocator<this_type>().deallocate( static_cast<this_type *>(p), 1 );
+    }
+
+#endif
+
+#if defined(BOOST_SP_USE_QUICK_ALLOCATOR)
+
+    void * operator new( std::size_t )
+    {
+        return quick_allocator<this_type>::alloc();
+    }
+
+    void operator delete( void * p )
+    {
+        quick_allocator<this_type>::dealloc( p );
+    }
+
+#endif
+};
+
+template<class P, class D, class A> class sp_counted_impl_pda: public sp_counted_base
+{
+private:
+
+    P p_; // copy constructor must not throw
+    D d_; // copy constructor must not throw
+    A a_; // copy constructor must not throw
+
+    sp_counted_impl_pda( sp_counted_impl_pda const & );
+    sp_counted_impl_pda & operator= ( sp_counted_impl_pda const & );
+
+    typedef sp_counted_impl_pda<P, D, A> this_type;
+
+public:
+
+    // pre: d( p ) must not throw
+
+    sp_counted_impl_pda( P p, D & d, A a ): p_( p ), d_( d ), a_( a )
+    {
+    }
+
+    sp_counted_impl_pda( P p, A a ): p_( p ), d_(), a_( a )
+    {
+    }
+
+    virtual void dispose() // nothrow
+    {
+        d_( p_ );
+    }
+
+    virtual void destroy() // nothrow
+    {
+        typedef typename A::template rebind< this_type >::other A2;
+
+        A2 a2( a_ );
+
+        this->~this_type();
+        a2.deallocate( this, 1 );
+    }
+
+    virtual void * get_deleter( detail::sp_typeinfo const & ti )
+    {
+        return ti == BOOST_SP_TYPEID( D )? &reinterpret_cast<char&>( d_ ): 0;
+    }
+
+    virtual void * get_untyped_deleter()
+    {
+        return &reinterpret_cast<char&>( d_ );
+    }
+};
+
+#ifdef __CODEGUARD__
+# pragma option pop
+#endif
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_forward.hpp
+++ b/include/boost/smart_ptr/detail/sp_forward.hpp
@@ -0,0 +1,39 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_FORWARD_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_FORWARD_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  detail/sp_forward.hpp
+//
+//  Copyright 2008,2012 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/config.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+template< class T > T&& sp_forward( T & t ) BOOST_NOEXCEPT
+{
+    return static_cast< T&& >( t );
+}
+
+#endif
+
+} // namespace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_FORWARD_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_has_sync.hpp
+++ b/include/boost/smart_ptr/detail/sp_has_sync.hpp
@@ -0,0 +1,69 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_HAS_SYNC_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_HAS_SYNC_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  boost/smart_ptr/detail/sp_has_sync.hpp
+//
+//  Copyright (c) 2008, 2009 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  Defines the BOOST_SP_HAS_SYNC macro if the __sync_* intrinsics
+//  are available.
+//
+
+#ifndef BOOST_SP_NO_SYNC
+
+#if defined( __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 )
+
+# define BOOST_SP_HAS_SYNC
+
+#elif defined( __IBMCPP__ ) && ( __IBMCPP__ >= 1210 )
+
+# define BOOST_SP_HAS_SYNC
+
+#elif defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
+
+#define BOOST_SP_HAS_SYNC
+
+#if defined( __arm__ )  || defined( __armel__ )
+#undef BOOST_SP_HAS_SYNC
+#endif
+
+#if defined( __hppa ) || defined( __hppa__ )
+#undef BOOST_SP_HAS_SYNC
+#endif
+
+#if defined( __m68k__ )
+#undef BOOST_SP_HAS_SYNC
+#endif
+
+#if defined( __sh__ )
+#undef BOOST_SP_HAS_SYNC
+#endif
+
+#if defined( __sparc__ )
+#undef BOOST_SP_HAS_SYNC
+#endif
+
+#if defined( __INTEL_COMPILER ) && !defined( __ia64__ ) && ( __INTEL_COMPILER < 1110 )
+#undef BOOST_SP_HAS_SYNC
+#endif
+
+#if defined(__PATHSCALE__) && ((__PATHCC__ == 4) && (__PATHCC_MINOR__ < 9)) 
+#undef BOOST_SP_HAS_SYNC
+#endif
+
+#endif
+
+#endif // #ifndef BOOST_SP_NO_SYNC
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_HAS_SYNC_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/sp_if_array.hpp
+++ b/include/boost/smart_ptr/detail/sp_if_array.hpp
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2012 Glen Joseph Fernandes 
+ * glenfe at live dot com
+ *
+ * Distributed under the Boost Software License, 
+ * Version 1.0. (See accompanying file LICENSE_1_0.txt 
+ * or copy at http://boost.org/LICENSE_1_0.txt)
+ */
+#ifndef BOOST_SMART_PTR_DETAIL_SP_IF_ARRAY_HPP
+#define BOOST_SMART_PTR_DETAIL_SP_IF_ARRAY_HPP
+
+#include <boost/smart_ptr/shared_ptr.hpp>
+
+namespace boost {
+    namespace detail {
+        template<typename T> 
+        struct sp_if_array;
+        template<typename T>
+        struct sp_if_array<T[]> {
+            typedef boost::shared_ptr<T[]> type;
+        };
+        template<typename T>
+        struct sp_if_size_array;
+        template<typename T, std::size_t N>
+        struct sp_if_size_array<T[N]> {
+            typedef boost::shared_ptr<T[N]> type;
+        };
+    }
+}
+
+#endif
--- a/include/boost/smart_ptr/detail/sp_nullptr_t.hpp
+++ b/include/boost/smart_ptr/detail/sp_nullptr_t.hpp
@@ -0,0 +1,45 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_NULLPTR_T_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_NULLPTR_T_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  detail/sp_nullptr_t.hpp
+//
+//  Copyright 2013 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/config.hpp>
+#include <cstddef>
+
+#if !defined( BOOST_NO_CXX11_NULLPTR )
+
+namespace boost
+{
+
+namespace detail
+{
+
+#if defined( __clang__ ) && !defined( _LIBCPP_VERSION ) && !defined( BOOST_NO_CXX11_DECLTYPE )
+
+    typedef decltype(nullptr) sp_nullptr_t;
+
+#else
+
+    typedef std::nullptr_t sp_nullptr_t;
+
+#endif
+
+} // namespace detail
+
+} // namespace boost
+
+#endif // !defined( BOOST_NO_CXX11_NULLPTR )
+
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_NULLPTR_T_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/spinlock.hpp
+++ b/include/boost/smart_ptr/detail/spinlock.hpp
@@ -0,0 +1,56 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SPINLOCK_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  boost/detail/spinlock.hpp
+//
+//  Copyright (c) 2008 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  struct spinlock
+//  {
+//      void lock();
+//      bool try_lock();
+//      void unlock();
+//
+//      class scoped_lock;
+//  };
+//
+//  #define BOOST_DETAIL_SPINLOCK_INIT <unspecified>
+//
+
+#include <boost/config.hpp>
+#include <boost/smart_ptr/detail/sp_has_sync.hpp>
+
+#if defined( BOOST_SP_USE_PTHREADS )
+#  include <boost/smart_ptr/detail/spinlock_pt.hpp>
+
+#elif defined(__GNUC__) && defined( __arm__ ) && !defined( __thumb__ )
+#  include <boost/smart_ptr/detail/spinlock_gcc_arm.hpp>
+
+#elif defined( BOOST_SP_HAS_SYNC )
+#  include <boost/smart_ptr/detail/spinlock_sync.hpp>
+
+#elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
+#  include <boost/smart_ptr/detail/spinlock_w32.hpp>
+
+#elif defined(BOOST_HAS_PTHREADS)
+#  include <boost/smart_ptr/detail/spinlock_pt.hpp>
+
+#elif !defined(BOOST_HAS_THREADS)
+#  include <boost/smart_ptr/detail/spinlock_nt.hpp>
+
+#else
+#  error Unrecognized threading platform
+#endif
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/spinlock_gcc_arm.hpp
+++ b/include/boost/smart_ptr/detail/spinlock_gcc_arm.hpp
@@ -0,0 +1,120 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED
+
+//
+//  Copyright (c) 2008, 2011 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/smart_ptr/detail/yield_k.hpp>
+
+#if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_7S__)
+
+# define BOOST_SP_ARM_BARRIER "dmb"
+# define BOOST_SP_ARM_HAS_LDREX
+
+#elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__)
+
+# define BOOST_SP_ARM_BARRIER "mcr p15, 0, r0, c7, c10, 5"
+# define BOOST_SP_ARM_HAS_LDREX
+
+#else
+
+# define BOOST_SP_ARM_BARRIER ""
+
+#endif
+
+namespace boost
+{
+
+namespace detail
+{
+
+class spinlock
+{
+public:
+
+    int v_;
+
+public:
+
+    bool try_lock()
+    {
+        int r;
+
+#ifdef BOOST_SP_ARM_HAS_LDREX
+
+        __asm__ __volatile__(
+            "ldrex %0, [%2]; \n"
+            "cmp %0, %1; \n"
+            "strexne %0, %1, [%2]; \n"
+            BOOST_SP_ARM_BARRIER :
+            "=&r"( r ): // outputs
+            "r"( 1 ), "r"( &v_ ): // inputs
+            "memory", "cc" );
+
+#else
+
+        __asm__ __volatile__(
+            "swp %0, %1, [%2];\n"
+            BOOST_SP_ARM_BARRIER :
+            "=&r"( r ): // outputs
+            "r"( 1 ), "r"( &v_ ): // inputs
+            "memory", "cc" );
+
+#endif
+
+        return r == 0;
+    }
+
+    void lock()
+    {
+        for( unsigned k = 0; !try_lock(); ++k )
+        {
+            boost::detail::yield( k );
+        }
+    }
+
+    void unlock()
+    {
+        __asm__ __volatile__( BOOST_SP_ARM_BARRIER ::: "memory" );
+        *const_cast< int volatile* >( &v_ ) = 0;
+    }
+
+public:
+
+    class scoped_lock
+    {
+    private:
+
+        spinlock & sp_;
+
+        scoped_lock( scoped_lock const & );
+        scoped_lock & operator=( scoped_lock const & );
+
+    public:
+
+        explicit scoped_lock( spinlock & sp ): sp_( sp )
+        {
+            sp.lock();
+        }
+
+        ~scoped_lock()
+        {
+            sp_.unlock();
+        }
+    };
+};
+
+} // namespace detail
+} // namespace boost
+
+#define BOOST_DETAIL_SPINLOCK_INIT {0}
+
+#undef BOOST_SP_ARM_BARRIER
+#undef BOOST_SP_ARM_HAS_LDREX
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/spinlock_nt.hpp
+++ b/include/boost/smart_ptr/detail/spinlock_nt.hpp
@@ -0,0 +1,89 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_NT_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SPINLOCK_NT_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  Copyright (c) 2008 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/assert.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class spinlock
+{
+public:
+
+    bool locked_;
+
+public:
+
+    inline bool try_lock()
+    {
+        if( locked_ )
+        {
+            return false;
+        }
+        else
+        {
+            locked_ = true;
+            return true;
+        }
+    }
+
+    inline void lock()
+    {
+        BOOST_ASSERT( !locked_ );
+        locked_ = true;
+    }
+
+    inline void unlock()
+    {
+        BOOST_ASSERT( locked_ );
+        locked_ = false;
+    }
+
+public:
+
+    class scoped_lock
+    {
+    private:
+
+        spinlock & sp_;
+
+        scoped_lock( scoped_lock const & );
+        scoped_lock & operator=( scoped_lock const & );
+
+    public:
+
+        explicit scoped_lock( spinlock & sp ): sp_( sp )
+        {
+            sp.lock();
+        }
+
+        ~scoped_lock()
+        {
+            sp_.unlock();
+        }
+    };
+};
+
+} // namespace detail
+} // namespace boost
+
+#define BOOST_DETAIL_SPINLOCK_INIT { false }
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_NT_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/spinlock_pool.hpp
+++ b/include/boost/smart_ptr/detail/spinlock_pool.hpp
@@ -0,0 +1,91 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_POOL_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SPINLOCK_POOL_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  boost/detail/spinlock_pool.hpp
+//
+//  Copyright (c) 2008 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  spinlock_pool<0> is reserved for atomic<>, when/if it arrives
+//  spinlock_pool<1> is reserved for shared_ptr reference counts
+//  spinlock_pool<2> is reserved for shared_ptr atomic access
+//
+
+#include <boost/config.hpp>
+#include <boost/smart_ptr/detail/spinlock.hpp>
+#include <cstddef>
+
+namespace boost
+{
+
+namespace detail
+{
+
+template< int I > class spinlock_pool
+{
+private:
+
+    static spinlock pool_[ 41 ];
+
+public:
+
+    static spinlock & spinlock_for( void const * pv )
+    {
+#if defined(__VMS) && __INITIAL_POINTER_SIZE == 64  
+        std::size_t i = reinterpret_cast< unsigned long long >( pv ) % 41;
+#else  
+        std::size_t i = reinterpret_cast< std::size_t >( pv ) % 41;
+#endif  
+        return pool_[ i ];
+    }
+
+    class scoped_lock
+    {
+    private:
+
+        spinlock & sp_;
+
+        scoped_lock( scoped_lock const & );
+        scoped_lock & operator=( scoped_lock const & );
+
+    public:
+
+        explicit scoped_lock( void const * pv ): sp_( spinlock_for( pv ) )
+        {
+            sp_.lock();
+        }
+
+        ~scoped_lock()
+        {
+            sp_.unlock();
+        }
+    };
+};
+
+template< int I > spinlock spinlock_pool< I >::pool_[ 41 ] =
+{
+    BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
+    BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
+    BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
+    BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
+    BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
+    BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
+    BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
+    BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
+    BOOST_DETAIL_SPINLOCK_INIT
+};
+
+} // namespace detail
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_POOL_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/spinlock_pt.hpp
+++ b/include/boost/smart_ptr/detail/spinlock_pt.hpp
@@ -0,0 +1,79 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_PT_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SPINLOCK_PT_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  Copyright (c) 2008 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <pthread.h>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class spinlock
+{
+public:
+
+    pthread_mutex_t v_;
+
+public:
+
+    bool try_lock()
+    {
+        return pthread_mutex_trylock( &v_ ) == 0;
+    }
+
+    void lock()
+    {
+        pthread_mutex_lock( &v_ );
+    }
+
+    void unlock()
+    {
+        pthread_mutex_unlock( &v_ );
+    }
+
+public:
+
+    class scoped_lock
+    {
+    private:
+
+        spinlock & sp_;
+
+        scoped_lock( scoped_lock const & );
+        scoped_lock & operator=( scoped_lock const & );
+
+    public:
+
+        explicit scoped_lock( spinlock & sp ): sp_( sp )
+        {
+            sp.lock();
+        }
+
+        ~scoped_lock()
+        {
+            sp_.unlock();
+        }
+    };
+};
+
+} // namespace detail
+} // namespace boost
+
+#define BOOST_DETAIL_SPINLOCK_INIT { PTHREAD_MUTEX_INITIALIZER }
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_PT_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/spinlock_sync.hpp
+++ b/include/boost/smart_ptr/detail/spinlock_sync.hpp
@@ -0,0 +1,87 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_SYNC_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SPINLOCK_SYNC_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  Copyright (c) 2008 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/smart_ptr/detail/yield_k.hpp>
+
+#if defined( __ia64__ ) && defined( __INTEL_COMPILER )
+# include <ia64intrin.h>
+#endif
+
+namespace boost
+{
+
+namespace detail
+{
+
+class spinlock
+{
+public:
+
+    int v_;
+
+public:
+
+    bool try_lock()
+    {
+        int r = __sync_lock_test_and_set( &v_, 1 );
+        return r == 0;
+    }
+
+    void lock()
+    {
+        for( unsigned k = 0; !try_lock(); ++k )
+        {
+            boost::detail::yield( k );
+        }
+    }
+
+    void unlock()
+    {
+        __sync_lock_release( &v_ );
+    }
+
+public:
+
+    class scoped_lock
+    {
+    private:
+
+        spinlock & sp_;
+
+        scoped_lock( scoped_lock const & );
+        scoped_lock & operator=( scoped_lock const & );
+
+    public:
+
+        explicit scoped_lock( spinlock & sp ): sp_( sp )
+        {
+            sp.lock();
+        }
+
+        ~scoped_lock()
+        {
+            sp_.unlock();
+        }
+    };
+};
+
+} // namespace detail
+} // namespace boost
+
+#define BOOST_DETAIL_SPINLOCK_INIT {0}
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_SYNC_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/spinlock_w32.hpp
+++ b/include/boost/smart_ptr/detail/spinlock_w32.hpp
@@ -0,0 +1,113 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_W32_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SPINLOCK_W32_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  Copyright (c) 2008 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/detail/interlocked.hpp>
+#include <boost/smart_ptr/detail/yield_k.hpp>
+
+// BOOST_COMPILER_FENCE
+
+#if defined(__INTEL_COMPILER)
+
+#define BOOST_COMPILER_FENCE __memory_barrier();
+
+#elif defined( _MSC_VER ) && _MSC_VER >= 1310
+
+extern "C" void _ReadWriteBarrier();
+#pragma intrinsic( _ReadWriteBarrier )
+
+#define BOOST_COMPILER_FENCE _ReadWriteBarrier();
+
+#elif defined(__GNUC__)
+
+#define BOOST_COMPILER_FENCE __asm__ __volatile__( "" : : : "memory" );
+
+#else
+
+#define BOOST_COMPILER_FENCE
+
+#endif
+
+//
+
+namespace boost
+{
+
+namespace detail
+{
+
+class spinlock
+{
+public:
+
+    long v_;
+
+public:
+
+    bool try_lock()
+    {
+        long r = BOOST_INTERLOCKED_EXCHANGE( &v_, 1 );
+
+        BOOST_COMPILER_FENCE
+
+        return r == 0;
+    }
+
+    void lock()
+    {
+        for( unsigned k = 0; !try_lock(); ++k )
+        {
+            boost::detail::yield( k );
+        }
+    }
+
+    void unlock()
+    {
+        BOOST_COMPILER_FENCE
+        *const_cast< long volatile* >( &v_ ) = 0;
+    }
+
+public:
+
+    class scoped_lock
+    {
+    private:
+
+        spinlock & sp_;
+
+        scoped_lock( scoped_lock const & );
+        scoped_lock & operator=( scoped_lock const & );
+
+    public:
+
+        explicit scoped_lock( spinlock & sp ): sp_( sp )
+        {
+            sp.lock();
+        }
+
+        ~scoped_lock()
+        {
+            sp_.unlock();
+        }
+    };
+};
+
+} // namespace detail
+} // namespace boost
+
+#define BOOST_DETAIL_SPINLOCK_INIT {0}
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_W32_HPP_INCLUDED
--- a/include/boost/smart_ptr/detail/yield_k.hpp
+++ b/include/boost/smart_ptr/detail/yield_k.hpp
@@ -0,0 +1,148 @@
+#ifndef BOOST_SMART_PTR_DETAIL_YIELD_K_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_YIELD_K_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  yield_k.hpp
+//
+//  Copyright (c) 2008 Peter Dimov
+//
+//  void yield( unsigned k );
+//
+//  Typical use:
+//
+//  for( unsigned k = 0; !try_lock(); ++k ) yield( k );
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/config.hpp>
+
+// BOOST_SMT_PAUSE
+
+#if defined(_MSC_VER) && _MSC_VER >= 1310 && ( defined(_M_IX86) || defined(_M_X64) )
+
+extern "C" void _mm_pause();
+
+#define BOOST_SMT_PAUSE _mm_pause();
+
+#elif defined(__GNUC__) && ( defined(__i386__) || defined(__x86_64__) )
+
+#define BOOST_SMT_PAUSE __asm__ __volatile__( "rep; nop" : : : "memory" );
+
+#endif
+
+//
+
+#if defined( WIN32 ) || defined( _WIN32 ) || defined( __WIN32__ ) || defined( __CYGWIN__ )
+
+#if defined( BOOST_USE_WINDOWS_H )
+# include <windows.h>
+#endif
+
+namespace boost
+{
+
+namespace detail
+{
+
+#if !defined( BOOST_USE_WINDOWS_H )
+  extern "C" void __stdcall Sleep( unsigned long ms );
+#endif
+
+inline void yield( unsigned k )
+{
+    if( k < 4 )
+    {
+    }
+#if defined( BOOST_SMT_PAUSE )
+    else if( k < 16 )
+    {
+        BOOST_SMT_PAUSE
+    }
+#endif
+    else if( k < 32 )
+    {
+        Sleep( 0 );
+    }
+    else
+    {
+        Sleep( 1 );
+    }
+}
+
+} // namespace detail
+
+} // namespace boost
+
+#elif defined( BOOST_HAS_PTHREADS )
+
+#include <sched.h>
+#include <time.h>
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline void yield( unsigned k )
+{
+    if( k < 4 )
+    {
+    }
+#if defined( BOOST_SMT_PAUSE )
+    else if( k < 16 )
+    {
+        BOOST_SMT_PAUSE
+    }
+#endif
+    else if( k < 32 || k & 1 )
+    {
+        sched_yield();
+    }
+    else
+    {
+        // g++ -Wextra warns on {} or {0}
+        struct timespec rqtp = { 0, 0 };
+
+        // POSIX says that timespec has tv_sec and tv_nsec
+        // But it doesn't guarantee order or placement
+
+        rqtp.tv_sec = 0;
+        rqtp.tv_nsec = 1000;
+
+        nanosleep( &rqtp, 0 );
+    }
+}
+
+} // namespace detail
+
+} // namespace boost
+
+#else
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline void yield( unsigned )
+{
+}
+
+} // namespace detail
+
+} // namespace boost
+
+#endif
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_YIELD_K_HPP_INCLUDED
--- a/include/boost/smart_ptr/enable_shared_from_raw.hpp
+++ b/include/boost/smart_ptr/enable_shared_from_raw.hpp
@@ -0,0 +1,144 @@
+#ifndef BOOST_ENABLE_SHARED_FROM_RAW_HPP_INCLUDED
+#define BOOST_ENABLE_SHARED_FROM_RAW_HPP_INCLUDED
+
+//
+//  enable_shared_from_raw.hpp
+//
+//  Copyright 2002, 2009 Peter Dimov
+//  Copyright 2008-2009 Frank Mori Hess
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/config.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+#include <boost/assert.hpp>
+#include <boost/detail/workaround.hpp>
+
+namespace boost
+{
+template<typename T> boost::shared_ptr<T> shared_from_raw(T *);
+template<typename T> boost::weak_ptr<T> weak_from_raw(T *);
+
+namespace detail
+{
+template< class X, class Y > inline void sp_enable_shared_from_this( boost::shared_ptr<X> * ppx, Y const * py, boost::enable_shared_from_raw const * pe );
+
+} // namespace detail
+
+class enable_shared_from_raw
+{
+protected:
+
+    enable_shared_from_raw()
+    {
+    }
+
+    enable_shared_from_raw( enable_shared_from_raw const & )
+    {
+    }
+
+    enable_shared_from_raw & operator=( enable_shared_from_raw const & )
+    {
+        return *this;
+    }
+
+    ~enable_shared_from_raw()
+    {
+        BOOST_ASSERT( shared_this_.use_count() <= 1 ); // make sure no dangling shared_ptr objects exist
+    }
+
+private:
+
+    void init_weak_once() const
+    {
+        if( weak_this_.expired() )
+        {
+            shared_this_.reset( static_cast<void*>(0), detail::esft2_deleter_wrapper() );
+            weak_this_ = shared_this_;
+        }
+    }
+
+#ifdef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+public:
+#else
+private:
+    template<class Y> friend class shared_ptr;
+    template<typename T> friend boost::shared_ptr<T> shared_from_raw(T *);
+    template<typename T> friend boost::weak_ptr<T> weak_from_raw(T *);
+    template< class X, class Y > friend inline void detail::sp_enable_shared_from_this( boost::shared_ptr<X> * ppx, Y const * py, boost::enable_shared_from_raw const * pe );
+#endif
+
+    shared_ptr<void> shared_from_this()
+    {
+        init_weak_once();
+        return shared_ptr<void>( weak_this_ );
+    }
+
+    shared_ptr<const void> shared_from_this() const
+    {
+        init_weak_once();
+        return shared_ptr<const void>( weak_this_ );
+    }
+
+    // Note: invoked automatically by shared_ptr; do not call
+    template<class X, class Y> void _internal_accept_owner( shared_ptr<X> * ppx, Y * py ) const
+    {
+        BOOST_ASSERT( ppx != 0 );
+
+        if( weak_this_.expired() )
+        {
+            weak_this_ = *ppx;
+        }
+        else if( shared_this_.use_count() != 0 )
+        {
+            BOOST_ASSERT( ppx->unique() ); // no weak_ptrs should exist either, but there's no way to check that
+
+            detail::esft2_deleter_wrapper * pd = boost::get_deleter<detail::esft2_deleter_wrapper>( shared_this_ );
+            BOOST_ASSERT( pd != 0 );
+
+            pd->set_deleter( *ppx );
+
+            ppx->reset( shared_this_, ppx->get() );
+            shared_this_.reset();
+        }
+    }
+
+    mutable weak_ptr<void> weak_this_;
+private:
+    mutable shared_ptr<void> shared_this_;
+};
+
+template<typename T>
+boost::shared_ptr<T> shared_from_raw(T *p)
+{
+    BOOST_ASSERT(p != 0);
+    return boost::shared_ptr<T>(p->enable_shared_from_raw::shared_from_this(), p);
+}
+
+template<typename T>
+boost::weak_ptr<T> weak_from_raw(T *p)
+{
+    BOOST_ASSERT(p != 0);
+    boost::weak_ptr<T> result;
+    result._internal_aliasing_assign(p->enable_shared_from_raw::weak_this_, p);
+    return result;
+}
+
+namespace detail
+{
+    template< class X, class Y > inline void sp_enable_shared_from_this( boost::shared_ptr<X> * ppx, Y const * py, boost::enable_shared_from_raw const * pe )
+    {
+        if( pe != 0 )
+        {
+            pe->_internal_accept_owner( ppx, const_cast< Y* >( py ) );
+        }
+    }
+} // namepsace detail
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_ENABLE_SHARED_FROM_RAW_HPP_INCLUDED
--- a/include/boost/smart_ptr/enable_shared_from_this.hpp
+++ b/include/boost/smart_ptr/enable_shared_from_this.hpp
@@ -0,0 +1,79 @@
+#ifndef BOOST_SMART_PTR_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
+#define BOOST_SMART_PTR_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
+
+//
+//  enable_shared_from_this.hpp
+//
+//  Copyright 2002, 2009 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  http://www.boost.org/libs/smart_ptr/enable_shared_from_this.html
+//
+
+#include <boost/smart_ptr/weak_ptr.hpp>
+#include <boost/smart_ptr/shared_ptr.hpp>
+#include <boost/assert.hpp>
+#include <boost/config.hpp>
+
+namespace boost
+{
+
+template<class T> class enable_shared_from_this
+{
+protected:
+
+    enable_shared_from_this() BOOST_NOEXCEPT
+    {
+    }
+
+    enable_shared_from_this(enable_shared_from_this const &) BOOST_NOEXCEPT
+    {
+    }
+
+    enable_shared_from_this & operator=(enable_shared_from_this const &) BOOST_NOEXCEPT
+    {
+        return *this;
+    }
+
+    ~enable_shared_from_this() BOOST_NOEXCEPT // ~weak_ptr<T> newer throws, so this call also must not throw
+    {
+    }
+
+public:
+
+    shared_ptr<T> shared_from_this()
+    {
+        shared_ptr<T> p( weak_this_ );
+        BOOST_ASSERT( p.get() == this );
+        return p;
+    }
+
+    shared_ptr<T const> shared_from_this() const
+    {
+        shared_ptr<T const> p( weak_this_ );
+        BOOST_ASSERT( p.get() == this );
+        return p;
+    }
+
+public: // actually private, but avoids compiler template friendship issues
+
+    // Note: invoked automatically by shared_ptr; do not call
+    template<class X, class Y> void _internal_accept_owner( shared_ptr<X> const * ppx, Y * py ) const
+    {
+        if( weak_this_.expired() )
+        {
+            weak_this_ = shared_ptr<T>( *ppx, py );
+        }
+    }
+
+private:
+
+    mutable weak_ptr<T> weak_this_;
+};
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
--- a/include/boost/smart_ptr/intrusive_ptr.hpp
+++ b/include/boost/smart_ptr/intrusive_ptr.hpp
@@ -0,0 +1,324 @@
+#ifndef BOOST_SMART_PTR_INTRUSIVE_PTR_HPP_INCLUDED
+#define BOOST_SMART_PTR_INTRUSIVE_PTR_HPP_INCLUDED
+
+//
+//  intrusive_ptr.hpp
+//
+//  Copyright (c) 2001, 2002 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/smart_ptr/intrusive_ptr.html for documentation.
+//
+
+#include <boost/config.hpp>
+
+#include <boost/assert.hpp>
+#include <boost/detail/workaround.hpp>
+#include <boost/smart_ptr/detail/sp_convertible.hpp>
+#include <boost/smart_ptr/detail/sp_nullptr_t.hpp>
+
+#include <boost/config/no_tr1/functional.hpp>           // for std::less
+
+#if !defined(BOOST_NO_IOSTREAM)
+#if !defined(BOOST_NO_IOSFWD)
+#include <iosfwd>               // for std::basic_ostream
+#else
+#include <ostream>
+#endif
+#endif
+
+
+namespace boost
+{
+
+//
+//  intrusive_ptr
+//
+//  A smart pointer that uses intrusive reference counting.
+//
+//  Relies on unqualified calls to
+//  
+//      void intrusive_ptr_add_ref(T * p);
+//      void intrusive_ptr_release(T * p);
+//
+//          (p != 0)
+//
+//  The object is responsible for destroying itself.
+//
+
+template<class T> class intrusive_ptr
+{
+private:
+
+    typedef intrusive_ptr this_type;
+
+public:
+
+    typedef T element_type;
+
+    intrusive_ptr() BOOST_NOEXCEPT : px( 0 )
+    {
+    }
+
+    intrusive_ptr( T * p, bool add_ref = true ): px( p )
+    {
+        if( px != 0 && add_ref ) intrusive_ptr_add_ref( px );
+    }
+
+#if !defined(BOOST_NO_MEMBER_TEMPLATES) || defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+
+    template<class U>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    intrusive_ptr( intrusive_ptr<U> const & rhs, typename boost::detail::sp_enable_if_convertible<U,T>::type = boost::detail::sp_empty() )
+
+#else
+
+    intrusive_ptr( intrusive_ptr<U> const & rhs )
+
+#endif
+    : px( rhs.get() )
+    {
+        if( px != 0 ) intrusive_ptr_add_ref( px );
+    }
+
+#endif
+
+    intrusive_ptr(intrusive_ptr const & rhs): px( rhs.px )
+    {
+        if( px != 0 ) intrusive_ptr_add_ref( px );
+    }
+
+    ~intrusive_ptr()
+    {
+        if( px != 0 ) intrusive_ptr_release( px );
+    }
+
+#if !defined(BOOST_NO_MEMBER_TEMPLATES) || defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+
+    template<class U> intrusive_ptr & operator=(intrusive_ptr<U> const & rhs)
+    {
+        this_type(rhs).swap(*this);
+        return *this;
+    }
+
+#endif
+
+// Move support
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+    intrusive_ptr(intrusive_ptr && rhs) BOOST_NOEXCEPT : px( rhs.px )
+    {
+        rhs.px = 0;
+    }
+
+    intrusive_ptr & operator=(intrusive_ptr && rhs) BOOST_NOEXCEPT
+    {
+        this_type( static_cast< intrusive_ptr && >( rhs ) ).swap(*this);
+        return *this;
+    }
+
+#endif
+
+    intrusive_ptr & operator=(intrusive_ptr const & rhs)
+    {
+        this_type(rhs).swap(*this);
+        return *this;
+    }
+
+    intrusive_ptr & operator=(T * rhs)
+    {
+        this_type(rhs).swap(*this);
+        return *this;
+    }
+
+    void reset() BOOST_NOEXCEPT
+    {
+        this_type().swap( *this );
+    }
+
+    void reset( T * rhs )
+    {
+        this_type( rhs ).swap( *this );
+    }
+
+    T * get() const BOOST_NOEXCEPT
+    {
+        return px;
+    }
+
+    T & operator*() const
+    {
+        BOOST_ASSERT( px != 0 );
+        return *px;
+    }
+
+    T * operator->() const
+    {
+        BOOST_ASSERT( px != 0 );
+        return px;
+    }
+
+// implicit conversion to "bool"
+#include <boost/smart_ptr/detail/operator_bool.hpp>
+
+    void swap(intrusive_ptr & rhs) BOOST_NOEXCEPT
+    {
+        T * tmp = px;
+        px = rhs.px;
+        rhs.px = tmp;
+    }
+
+private:
+
+    T * px;
+};
+
+template<class T, class U> inline bool operator==(intrusive_ptr<T> const & a, intrusive_ptr<U> const & b)
+{
+    return a.get() == b.get();
+}
+
+template<class T, class U> inline bool operator!=(intrusive_ptr<T> const & a, intrusive_ptr<U> const & b)
+{
+    return a.get() != b.get();
+}
+
+template<class T, class U> inline bool operator==(intrusive_ptr<T> const & a, U * b)
+{
+    return a.get() == b;
+}
+
+template<class T, class U> inline bool operator!=(intrusive_ptr<T> const & a, U * b)
+{
+    return a.get() != b;
+}
+
+template<class T, class U> inline bool operator==(T * a, intrusive_ptr<U> const & b)
+{
+    return a == b.get();
+}
+
+template<class T, class U> inline bool operator!=(T * a, intrusive_ptr<U> const & b)
+{
+    return a != b.get();
+}
+
+#if __GNUC__ == 2 && __GNUC_MINOR__ <= 96
+
+// Resolve the ambiguity between our op!= and the one in rel_ops
+
+template<class T> inline bool operator!=(intrusive_ptr<T> const & a, intrusive_ptr<T> const & b)
+{
+    return a.get() != b.get();
+}
+
+#endif
+
+#if !defined( BOOST_NO_CXX11_NULLPTR )
+
+template<class T> inline bool operator==( intrusive_ptr<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
+{
+    return p.get() == 0;
+}
+
+template<class T> inline bool operator==( boost::detail::sp_nullptr_t, intrusive_ptr<T> const & p ) BOOST_NOEXCEPT
+{
+    return p.get() == 0;
+}
+
+template<class T> inline bool operator!=( intrusive_ptr<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
+{
+    return p.get() != 0;
+}
+
+template<class T> inline bool operator!=( boost::detail::sp_nullptr_t, intrusive_ptr<T> const & p ) BOOST_NOEXCEPT
+{
+    return p.get() != 0;
+}
+
+#endif
+
+template<class T> inline bool operator<(intrusive_ptr<T> const & a, intrusive_ptr<T> const & b)
+{
+    return std::less<T *>()(a.get(), b.get());
+}
+
+template<class T> void swap(intrusive_ptr<T> & lhs, intrusive_ptr<T> & rhs)
+{
+    lhs.swap(rhs);
+}
+
+// mem_fn support
+
+template<class T> T * get_pointer(intrusive_ptr<T> const & p)
+{
+    return p.get();
+}
+
+template<class T, class U> intrusive_ptr<T> static_pointer_cast(intrusive_ptr<U> const & p)
+{
+    return static_cast<T *>(p.get());
+}
+
+template<class T, class U> intrusive_ptr<T> const_pointer_cast(intrusive_ptr<U> const & p)
+{
+    return const_cast<T *>(p.get());
+}
+
+template<class T, class U> intrusive_ptr<T> dynamic_pointer_cast(intrusive_ptr<U> const & p)
+{
+    return dynamic_cast<T *>(p.get());
+}
+
+// operator<<
+
+#if !defined(BOOST_NO_IOSTREAM)
+
+#if defined(BOOST_NO_TEMPLATED_IOSTREAMS) || ( defined(__GNUC__) &&  (__GNUC__ < 3) )
+
+template<class Y> std::ostream & operator<< (std::ostream & os, intrusive_ptr<Y> const & p)
+{
+    os << p.get();
+    return os;
+}
+
+#else
+
+// in STLport's no-iostreams mode no iostream symbols can be used
+#ifndef _STLP_NO_IOSTREAMS
+
+# if defined(BOOST_MSVC) && BOOST_WORKAROUND(BOOST_MSVC, < 1300 && __SGI_STL_PORT)
+// MSVC6 has problems finding std::basic_ostream through the using declaration in namespace _STL
+using std::basic_ostream;
+template<class E, class T, class Y> basic_ostream<E, T> & operator<< (basic_ostream<E, T> & os, intrusive_ptr<Y> const & p)
+# else
+template<class E, class T, class Y> std::basic_ostream<E, T> & operator<< (std::basic_ostream<E, T> & os, intrusive_ptr<Y> const & p)
+# endif 
+{
+    os << p.get();
+    return os;
+}
+
+#endif // _STLP_NO_IOSTREAMS
+
+#endif // __GNUC__ < 3
+
+#endif // !defined(BOOST_NO_IOSTREAM)
+
+// hash_value
+
+template< class T > struct hash;
+
+template< class T > std::size_t hash_value( boost::intrusive_ptr<T> const & p )
+{
+    return boost::hash< T* >()( p.get() );
+}
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_INTRUSIVE_PTR_HPP_INCLUDED
--- a/include/boost/smart_ptr/intrusive_ref_counter.hpp
+++ b/include/boost/smart_ptr/intrusive_ref_counter.hpp
@@ -0,0 +1,187 @@
+/*
+ *          Copyright Andrey Semashev 2007 - 2013.
+ * Distributed under the Boost Software License, Version 1.0.
+ *    (See accompanying file LICENSE_1_0.txt or copy at
+ *          http://www.boost.org/LICENSE_1_0.txt)
+ */
+/*!
+ * \file   intrusive_ref_counter.hpp
+ * \author Andrey Semashev
+ * \date   12.03.2009
+ *
+ * This header contains a reference counter class for \c intrusive_ptr.
+ */
+
+#ifndef BOOST_SMART_PTR_INTRUSIVE_REF_COUNTER_HPP_INCLUDED_
+#define BOOST_SMART_PTR_INTRUSIVE_REF_COUNTER_HPP_INCLUDED_
+
+#include <boost/config.hpp>
+#include <boost/smart_ptr/detail/atomic_count.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+#if defined(_MSC_VER)
+#pragma warning(push)
+// This is a bogus MSVC warning, which is flagged by friend declarations of intrusive_ptr_add_ref and intrusive_ptr_release in intrusive_ref_counter:
+// 'name' : the inline specifier cannot be used when a friend declaration refers to a specialization of a function template
+// Note that there is no inline specifier in the declarations.
+#pragma warning(disable: 4396)
+#endif
+
+namespace boost {
+
+namespace sp_adl_block {
+
+/*!
+ * \brief Thread unsafe reference counter policy for \c intrusive_ref_counter
+ *
+ * The policy instructs the \c intrusive_ref_counter base class to implement
+ * a reference counter suitable for single threaded use only. Pointers to the same
+ * object with this kind of reference counter must not be used by different threads.
+ */
+struct thread_unsafe_counter
+{
+    typedef unsigned int type;
+
+    static unsigned int load(unsigned int const& counter) BOOST_NOEXCEPT
+    {
+        return counter;
+    }
+
+    static void increment(unsigned int& counter) BOOST_NOEXCEPT
+    {
+        ++counter;
+    }
+
+    static unsigned int decrement(unsigned int& counter) BOOST_NOEXCEPT
+    {
+        return --counter;
+    }
+};
+
+/*!
+ * \brief Thread safe reference counter policy for \c intrusive_ref_counter
+ *
+ * The policy instructs the \c intrusive_ref_counter base class to implement
+ * a thread-safe reference counter, if the target platform supports multithreading.
+ */
+struct thread_safe_counter
+{
+    typedef boost::detail::atomic_count type;
+
+    static unsigned int load(boost::detail::atomic_count const& counter) BOOST_NOEXCEPT
+    {
+        return static_cast< unsigned int >(static_cast< long >(counter));
+    }
+
+    static void increment(boost::detail::atomic_count& counter) BOOST_NOEXCEPT
+    {
+        ++counter;
+    }
+
+    static unsigned int decrement(boost::detail::atomic_count& counter) BOOST_NOEXCEPT
+    {
+        return --counter;
+    }
+};
+
+template< typename DerivedT, typename CounterPolicyT = thread_safe_counter >
+class intrusive_ref_counter;
+
+template< typename DerivedT, typename CounterPolicyT >
+void intrusive_ptr_add_ref(const intrusive_ref_counter< DerivedT, CounterPolicyT >* p) BOOST_NOEXCEPT;
+template< typename DerivedT, typename CounterPolicyT >
+void intrusive_ptr_release(const intrusive_ref_counter< DerivedT, CounterPolicyT >* p) BOOST_NOEXCEPT;
+
+/*!
+ * \brief A reference counter base class
+ *
+ * This base class can be used with user-defined classes to add support
+ * for \c intrusive_ptr. The class contains a reference counter defined by the \c CounterPolicyT.
+ * Upon releasing the last \c intrusive_ptr referencing the object
+ * derived from the \c intrusive_ref_counter class, operator \c delete
+ * is automatically called on the pointer to the object.
+ *
+ * The other template parameter, \c DerivedT, is the user's class that derives from \c intrusive_ref_counter.
+ */
+template< typename DerivedT, typename CounterPolicyT >
+class intrusive_ref_counter
+{
+private:
+    //! Reference counter type
+    typedef typename CounterPolicyT::type counter_type;
+    //! Reference counter
+    mutable counter_type m_ref_counter;
+
+public:
+    /*!
+     * Default constructor
+     *
+     * \post <tt>use_count() == 0</tt>
+     */
+    intrusive_ref_counter() BOOST_NOEXCEPT : m_ref_counter(0)
+    {
+    }
+
+    /*!
+     * Copy constructor
+     *
+     * \post <tt>use_count() == 0</tt>
+     */
+    intrusive_ref_counter(intrusive_ref_counter const&) BOOST_NOEXCEPT : m_ref_counter(0)
+    {
+    }
+
+    /*!
+     * Assignment
+     *
+     * \post The reference counter is not modified after assignment
+     */
+    intrusive_ref_counter& operator= (intrusive_ref_counter const&) BOOST_NOEXCEPT { return *this; }
+
+    /*!
+     * \return The reference counter
+     */
+    unsigned int use_count() const BOOST_NOEXCEPT
+    {
+        return CounterPolicyT::load(m_ref_counter);
+    }
+
+protected:
+    /*!
+     * Destructor
+     */
+    BOOST_DEFAULTED_FUNCTION(~intrusive_ref_counter(), {})
+
+    friend void intrusive_ptr_add_ref< DerivedT, CounterPolicyT >(const intrusive_ref_counter< DerivedT, CounterPolicyT >* p) BOOST_NOEXCEPT;
+    friend void intrusive_ptr_release< DerivedT, CounterPolicyT >(const intrusive_ref_counter< DerivedT, CounterPolicyT >* p) BOOST_NOEXCEPT;
+};
+
+template< typename DerivedT, typename CounterPolicyT >
+inline void intrusive_ptr_add_ref(const intrusive_ref_counter< DerivedT, CounterPolicyT >* p) BOOST_NOEXCEPT
+{
+    CounterPolicyT::increment(p->m_ref_counter);
+}
+
+template< typename DerivedT, typename CounterPolicyT >
+inline void intrusive_ptr_release(const intrusive_ref_counter< DerivedT, CounterPolicyT >* p) BOOST_NOEXCEPT
+{
+    if (CounterPolicyT::decrement(p->m_ref_counter) == 0)
+        delete static_cast< const DerivedT* >(p);
+}
+
+} // namespace sp_adl_block
+
+using sp_adl_block::intrusive_ref_counter;
+using sp_adl_block::thread_unsafe_counter;
+using sp_adl_block::thread_safe_counter;
+
+} // namespace boost
+
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+
+#endif // BOOST_SMART_PTR_INTRUSIVE_REF_COUNTER_HPP_INCLUDED_
--- a/include/boost/smart_ptr/make_shared.hpp
+++ b/include/boost/smart_ptr/make_shared.hpp
@@ -0,0 +1,22 @@
+#ifndef BOOST_SMART_PTR_MAKE_SHARED_HPP_INCLUDED
+#define BOOST_SMART_PTR_MAKE_SHARED_HPP_INCLUDED
+
+//  make_shared.hpp
+//
+//  Copyright (c) 2007, 2008, 2012 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  See http://www.boost.org/libs/smart_ptr/make_shared.html
+//  for documentation.
+
+#include <boost/smart_ptr/make_shared_object.hpp>
+
+#if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION ) && !defined( BOOST_NO_SFINAE )
+# include <boost/smart_ptr/make_shared_array.hpp>
+# include <boost/smart_ptr/allocate_shared_array.hpp>
+#endif
+
+#endif // #ifndef BOOST_SMART_PTR_MAKE_SHARED_HPP_INCLUDED
--- a/include/boost/smart_ptr/make_shared_array.hpp
+++ b/include/boost/smart_ptr/make_shared_array.hpp
@@ -0,0 +1,247 @@
+/*
+ * Copyright (c) 2012 Glen Joseph Fernandes
+ * glenfe at live dot com
+ *
+ * Distributed under the Boost Software License,
+ * Version 1.0. (See accompanying file LICENSE_1_0.txt
+ * or copy at http://boost.org/LICENSE_1_0.txt)
+ */
+#ifndef BOOST_SMART_PTR_MAKE_SHARED_ARRAY_HPP
+#define BOOST_SMART_PTR_MAKE_SHARED_ARRAY_HPP
+
+#include <boost/smart_ptr/shared_ptr.hpp>
+#include <boost/smart_ptr/detail/array_deleter.hpp>
+#include <boost/smart_ptr/detail/array_traits.hpp>
+#include <boost/smart_ptr/detail/make_array_helper.hpp>
+#include <boost/smart_ptr/detail/sp_if_array.hpp>
+#if !defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST)
+#include <initializer_list>
+#endif
+
+namespace boost {
+    template<typename T>
+    inline typename boost::detail::sp_if_array<T>::type
+    make_shared(std::size_t size) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        T1* p1 = 0;
+        T2* p2 = 0;
+        std::size_t n1 = size * boost::detail::array_total<T1>::size;
+        boost::detail::make_array_helper<T2[]> a1(n1, &p2);
+        boost::detail::array_deleter<T2[]> d1(n1);
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init(p2);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template<typename T, typename... Args>
+    inline typename boost::detail::sp_if_array<T>::type
+    make_shared(std::size_t size, Args&&... args) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        T1* p1 = 0;
+        T2* p2 = 0;
+        std::size_t n1 = size * boost::detail::array_total<T1>::size;
+        boost::detail::make_array_helper<T2[]> a1(n1, &p2);
+        boost::detail::array_deleter<T2[]> d1(n1);
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init(p2, boost::detail::sp_forward<Args>(args)...);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+    template<typename T, typename... Args>
+    inline typename boost::detail::sp_if_size_array<T>::type
+    make_shared(Args&&... args) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        enum {
+            N = boost::detail::array_total<T>::size
+        };
+        T1* p1 = 0;
+        T2* p2 = 0;
+        boost::detail::make_array_helper<T2[N]> a1(&p2);
+        boost::detail::array_deleter<T2[N]> d1;
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[N]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init(p2, boost::detail::sp_forward<Args>(args)...);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+#endif
+#if !defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX)
+    template<typename T>
+    inline typename boost::detail::sp_if_size_array<T>::type
+    make_shared(const T& list) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        typedef const T2 T3;
+        enum {
+            N = boost::detail::array_total<T>::size
+        };
+        T1* p1 = 0;
+        T2* p2 = 0;
+        T3* p3 = 0;
+        boost::detail::make_array_helper<T2[N]> a1(&p2);
+        boost::detail::array_deleter<T2[N]> d1;
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[N]>* D2;
+        p3 = reinterpret_cast<T3*>(list);
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init_list(p2, p3);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+    template<typename T>
+    inline typename boost::detail::sp_if_array<T>::type
+    make_shared(std::size_t size,
+        const typename boost::detail::array_inner<T>::type& list) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        typedef const T2 T3;
+        enum {
+            M = boost::detail::array_total<T1>::size
+        };
+        T1* p1 = 0;
+        T2* p2 = 0;
+        T3* p3 = 0;
+        std::size_t n1 = M * size;
+        boost::detail::make_array_helper<T2[]> a1(n1, &p2);
+        boost::detail::array_deleter<T2[]> d1(n1);
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[]>* D2;
+        p3 = reinterpret_cast<T3*>(list);
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->template init_list<M>(p2, p3);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+    template<typename T>
+    inline typename boost::detail::sp_if_size_array<T>::type
+    make_shared(const typename boost::detail::array_inner<T>::type& list) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        typedef const T2 T3;
+        enum {
+            M = boost::detail::array_total<T1>::size,
+            N = boost::detail::array_total<T>::size
+        };
+        T1* p1 = 0;
+        T2* p2 = 0;
+        T3* p3 = 0;
+        boost::detail::make_array_helper<T2[N]> a1(&p2);
+        boost::detail::array_deleter<T2[N]> d1;
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[N]>* D2;
+        p3 = reinterpret_cast<T3*>(list);
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->template init_list<M>(p2, p3);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+#if !defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST)
+    template<typename T>
+    inline typename boost::detail::sp_if_array<T>::type
+    make_shared(std::initializer_list<typename boost::detail::array_inner<T>::type> list) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        typedef const T2 T3;
+        T1* p1 = 0;
+        T2* p2 = 0;
+        T3* p3 = 0;
+        std::size_t n1 = list.size() * boost::detail::array_total<T1>::size;
+        boost::detail::make_array_helper<T2[]> a1(n1, &p2);
+        boost::detail::array_deleter<T2[]> d1(n1);
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[]>* D2;
+        p3 = reinterpret_cast<T3*>(list.begin());
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init_list(p2, p3);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+#endif
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template<typename T>
+    inline typename boost::detail::sp_if_array<T>::type
+    make_shared(std::size_t size,
+        typename boost::detail::array_base<T>::type&& value) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        T1* p1 = 0;
+        T2* p2 = 0;
+        std::size_t n1 = size * boost::detail::array_total<T1>::size;
+        boost::detail::make_array_helper<T2[]> a1(n1, &p2);
+        boost::detail::array_deleter<T2[]> d1(n1);
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init(p2, boost::detail::sp_forward<T2>(value));
+        return boost::shared_ptr<T>(s1, p1);
+    }
+    template<typename T>
+    inline typename boost::detail::sp_if_size_array<T>::type
+    make_shared(typename boost::detail::array_base<T>::type&& value) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        enum {
+            N = boost::detail::array_total<T>::size
+        };
+        T1* p1 = 0;
+        T2* p2 = 0;
+        boost::detail::make_array_helper<T2[N]> a1(&p2);
+        boost::detail::array_deleter<T2[N]> d1;
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[N]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->init(p2, boost::detail::sp_forward<T2>(value));
+        return boost::shared_ptr<T>(s1, p1);
+    }
+#endif
+#endif
+    template<typename T>
+    inline typename boost::detail::sp_if_array<T>::type
+    make_shared_noinit(std::size_t size) {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        T1* p1 = 0;
+        T2* p2 = 0;
+        std::size_t n1 = size * boost::detail::array_total<T1>::size;
+        boost::detail::make_array_helper<T2[]> a1(n1, &p2);
+        boost::detail::array_deleter<T2[]> d1(n1);
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->noinit(p2);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+    template<typename T>
+    inline typename boost::detail::sp_if_size_array<T>::type
+    make_shared_noinit() {
+        typedef typename boost::detail::array_inner<T>::type T1;
+        typedef typename boost::detail::array_base<T1>::type T2;
+        enum {
+            N = boost::detail::array_total<T>::size
+        };
+        T1* p1 = 0;
+        T2* p2 = 0;
+        boost::detail::make_array_helper<T2[N]> a1(&p2);
+        boost::detail::array_deleter<T2[N]> d1;
+        boost::shared_ptr<T> s1(p1, d1, a1);
+        typedef boost::detail::array_deleter<T2[N]>* D2;
+        p1 = reinterpret_cast<T1*>(p2);
+        D2 d2 = static_cast<D2>(s1._internal_get_untyped_deleter());
+        d2->noinit(p2);
+        return boost::shared_ptr<T>(s1, p1);
+    }
+}
+
+#endif
--- a/include/boost/smart_ptr/make_shared_object.hpp
+++ b/include/boost/smart_ptr/make_shared_object.hpp
--- a/include/boost/smart_ptr/owner_less.hpp
+++ b/include/boost/smart_ptr/owner_less.hpp
@@ -0,0 +1,57 @@
+#ifndef BOOST_SMART_PTR_OWNER_LESS_HPP_INCLUDED
+#define BOOST_SMART_PTR_OWNER_LESS_HPP_INCLUDED
+
+//
+//  owner_less.hpp
+//
+//  Copyright (c) 2008 Frank Mori Hess
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/smart_ptr/smart_ptr.htm for documentation.
+//
+
+#include <functional>
+
+namespace boost
+{
+  template<typename T> class shared_ptr;
+  template<typename T> class weak_ptr;
+
+  namespace detail
+  {
+    template<typename T, typename U>
+      struct generic_owner_less : public std::binary_function<T, T, bool>
+    {
+      bool operator()(const T &lhs, const T &rhs) const
+      {
+        return lhs.owner_before(rhs);
+      }
+      bool operator()(const T &lhs, const U &rhs) const
+      {
+        return lhs.owner_before(rhs);
+      }
+      bool operator()(const U &lhs, const T &rhs) const
+      {
+        return lhs.owner_before(rhs);
+      }
+    };
+  } // namespace detail
+
+  template<typename T> struct owner_less;
+
+  template<typename T>
+    struct owner_less<shared_ptr<T> >:
+    public detail::generic_owner_less<shared_ptr<T>, weak_ptr<T> >
+  {};
+
+  template<typename T>
+    struct owner_less<weak_ptr<T> >:
+    public detail::generic_owner_less<weak_ptr<T>, shared_ptr<T> >
+  {};
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_OWNER_LESS_HPP_INCLUDED
--- a/include/boost/smart_ptr/scoped_array.hpp
+++ b/include/boost/smart_ptr/scoped_array.hpp
@@ -0,0 +1,132 @@
+#ifndef BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED
+#define BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED
+
+//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+//  Copyright (c) 2001, 2002 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  http://www.boost.org/libs/smart_ptr/scoped_array.htm
+//
+
+#include <boost/config.hpp>
+#include <boost/assert.hpp>
+#include <boost/checked_delete.hpp>
+#include <boost/smart_ptr/detail/sp_nullptr_t.hpp>
+
+#include <boost/detail/workaround.hpp>
+
+#include <cstddef>            // for std::ptrdiff_t
+
+namespace boost
+{
+
+// Debug hooks
+
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+
+void sp_array_constructor_hook(void * p);
+void sp_array_destructor_hook(void * p);
+
+#endif
+
+//  scoped_array extends scoped_ptr to arrays. Deletion of the array pointed to
+//  is guaranteed, either on destruction of the scoped_array or via an explicit
+//  reset(). Use shared_array or std::vector if your needs are more complex.
+
+template<class T> class scoped_array // noncopyable
+{
+private:
+
+    T * px;
+
+    scoped_array(scoped_array const &);
+    scoped_array & operator=(scoped_array const &);
+
+    typedef scoped_array<T> this_type;
+
+    void operator==( scoped_array const& ) const;
+    void operator!=( scoped_array const& ) const;
+
+public:
+
+    typedef T element_type;
+
+    explicit scoped_array( T * p = 0 ) BOOST_NOEXCEPT : px( p )
+    {
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        boost::sp_array_constructor_hook( px );
+#endif
+    }
+
+    ~scoped_array() // never throws
+    {
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        boost::sp_array_destructor_hook( px );
+#endif
+        boost::checked_array_delete( px );
+    }
+
+    void reset(T * p = 0) // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT)
+    {
+        BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors
+        this_type(p).swap(*this);
+    }
+
+    T & operator[](std::ptrdiff_t i) const // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT)
+    {
+        BOOST_ASSERT( px != 0 );
+        BOOST_ASSERT( i >= 0 );
+        return px[i];
+    }
+
+    T * get() const BOOST_NOEXCEPT
+    {
+        return px;
+    }
+
+// implicit conversion to "bool"
+#include <boost/smart_ptr/detail/operator_bool.hpp>
+
+    void swap(scoped_array & b) BOOST_NOEXCEPT
+    {
+        T * tmp = b.px;
+        b.px = px;
+        px = tmp;
+    }
+};
+
+#if !defined( BOOST_NO_CXX11_NULLPTR )
+
+template<class T> inline bool operator==( scoped_array<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
+{
+    return p.get() == 0;
+}
+
+template<class T> inline bool operator==( boost::detail::sp_nullptr_t, scoped_array<T> const & p ) BOOST_NOEXCEPT
+{
+    return p.get() == 0;
+}
+
+template<class T> inline bool operator!=( scoped_array<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
+{
+    return p.get() != 0;
+}
+
+template<class T> inline bool operator!=( boost::detail::sp_nullptr_t, scoped_array<T> const & p ) BOOST_NOEXCEPT
+{
+    return p.get() != 0;
+}
+
+#endif
+
+template<class T> inline void swap(scoped_array<T> & a, scoped_array<T> & b) BOOST_NOEXCEPT
+{
+    a.swap(b);
+}
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED
--- a/include/boost/smart_ptr/scoped_ptr.hpp
+++ b/include/boost/smart_ptr/scoped_ptr.hpp
@@ -0,0 +1,157 @@
+#ifndef BOOST_SMART_PTR_SCOPED_PTR_HPP_INCLUDED
+#define BOOST_SMART_PTR_SCOPED_PTR_HPP_INCLUDED
+
+//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+//  Copyright (c) 2001, 2002 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  http://www.boost.org/libs/smart_ptr/scoped_ptr.htm
+//
+
+#include <boost/config.hpp>
+#include <boost/assert.hpp>
+#include <boost/checked_delete.hpp>
+#include <boost/smart_ptr/detail/sp_nullptr_t.hpp>
+#include <boost/detail/workaround.hpp>
+
+#ifndef BOOST_NO_AUTO_PTR
+# include <memory>          // for std::auto_ptr
+#endif
+
+namespace boost
+{
+
+// Debug hooks
+
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+
+void sp_scalar_constructor_hook(void * p);
+void sp_scalar_destructor_hook(void * p);
+
+#endif
+
+//  scoped_ptr mimics a built-in pointer except that it guarantees deletion
+//  of the object pointed to, either on destruction of the scoped_ptr or via
+//  an explicit reset(). scoped_ptr is a simple solution for simple needs;
+//  use shared_ptr or std::auto_ptr if your needs are more complex.
+
+template<class T> class scoped_ptr // noncopyable
+{
+private:
+
+    T * px;
+
+    scoped_ptr(scoped_ptr const &);
+    scoped_ptr & operator=(scoped_ptr const &);
+
+    typedef scoped_ptr<T> this_type;
+
+    void operator==( scoped_ptr const& ) const;
+    void operator!=( scoped_ptr const& ) const;
+
+public:
+
+    typedef T element_type;
+
+    explicit scoped_ptr( T * p = 0 ): px( p ) // never throws
+    {
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        boost::sp_scalar_constructor_hook( px );
+#endif
+    }
+
+#ifndef BOOST_NO_AUTO_PTR
+
+    explicit scoped_ptr( std::auto_ptr<T> p ) BOOST_NOEXCEPT : px( p.release() )
+    {
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        boost::sp_scalar_constructor_hook( px );
+#endif
+    }
+
+#endif
+
+    ~scoped_ptr() // never throws
+    {
+#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
+        boost::sp_scalar_destructor_hook( px );
+#endif
+        boost::checked_delete( px );
+    }
+
+    void reset(T * p = 0) // never throws
+    {
+        BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors
+        this_type(p).swap(*this);
+    }
+
+    T & operator*() const // never throws
+    {
+        BOOST_ASSERT( px != 0 );
+        return *px;
+    }
+
+    T * operator->() const // never throws
+    {
+        BOOST_ASSERT( px != 0 );
+        return px;
+    }
+
+    T * get() const BOOST_NOEXCEPT
+    {
+        return px;
+    }
+
+// implicit conversion to "bool"
+#include <boost/smart_ptr/detail/operator_bool.hpp>
+
+    void swap(scoped_ptr & b) BOOST_NOEXCEPT
+    {
+        T * tmp = b.px;
+        b.px = px;
+        px = tmp;
+    }
+};
+
+#if !defined( BOOST_NO_CXX11_NULLPTR )
+
+template<class T> inline bool operator==( scoped_ptr<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
+{
+    return p.get() == 0;
+}
+
+template<class T> inline bool operator==( boost::detail::sp_nullptr_t, scoped_ptr<T> const & p ) BOOST_NOEXCEPT
+{
+    return p.get() == 0;
+}
+
+template<class T> inline bool operator!=( scoped_ptr<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
+{
+    return p.get() != 0;
+}
+
+template<class T> inline bool operator!=( boost::detail::sp_nullptr_t, scoped_ptr<T> const & p ) BOOST_NOEXCEPT
+{
+    return p.get() != 0;
+}
+
+#endif
+
+template<class T> inline void swap(scoped_ptr<T> & a, scoped_ptr<T> & b) BOOST_NOEXCEPT
+{
+    a.swap(b);
+}
+
+// get_pointer(p) is a generic way to say p.get()
+
+template<class T> inline T * get_pointer(scoped_ptr<T> const & p) BOOST_NOEXCEPT
+{
+    return p.get();
+}
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_SCOPED_PTR_HPP_INCLUDED
--- a/include/boost/smart_ptr/shared_array.hpp
+++ b/include/boost/smart_ptr/shared_array.hpp
@@ -0,0 +1,290 @@
+#ifndef BOOST_SMART_PTR_SHARED_ARRAY_HPP_INCLUDED
+#define BOOST_SMART_PTR_SHARED_ARRAY_HPP_INCLUDED
+
+//
+//  shared_array.hpp
+//
+//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+//  Copyright (c) 2001, 2002, 2012 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/smart_ptr/shared_array.htm for documentation.
+//
+
+#include <boost/config.hpp>   // for broken compiler workarounds
+
+#if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+#include <boost/smart_ptr/detail/shared_array_nmt.hpp>
+#else
+
+#include <memory>             // TR1 cyclic inclusion fix
+
+#include <boost/assert.hpp>
+#include <boost/checked_delete.hpp>
+
+#include <boost/smart_ptr/shared_ptr.hpp>
+#include <boost/smart_ptr/detail/shared_count.hpp>
+#include <boost/smart_ptr/detail/sp_nullptr_t.hpp>
+#include <boost/detail/workaround.hpp>
+
+#include <cstddef>            // for std::ptrdiff_t
+#include <algorithm>          // for std::swap
+#include <functional>         // for std::less
+
+namespace boost
+{
+
+//
+//  shared_array
+//
+//  shared_array extends shared_ptr to arrays.
+//  The array pointed to is deleted when the last shared_array pointing to it
+//  is destroyed or reset.
+//
+
+template<class T> class shared_array
+{
+private:
+
+    // Borland 5.5.1 specific workarounds
+    typedef checked_array_deleter<T> deleter;
+    typedef shared_array<T> this_type;
+
+public:
+
+    typedef T element_type;
+
+    shared_array() BOOST_NOEXCEPT : px( 0 ), pn()
+    {
+    }
+
+    template<class Y>
+    explicit shared_array( Y * p ): px( p ), pn( p, checked_array_deleter<Y>() )
+    {
+        boost::detail::sp_assert_convertible< Y[], T[] >();
+    }
+
+    //
+    // Requirements: D's copy constructor must not throw
+    //
+    // shared_array will release p by calling d(p)
+    //
+
+    template<class Y, class D> shared_array( Y * p, D d ): px( p ), pn( p, d )
+    {
+        boost::detail::sp_assert_convertible< Y[], T[] >();
+    }
+
+    // As above, but with allocator. A's copy constructor shall not throw.
+
+    template<class Y, class D, class A> shared_array( Y * p, D d, A a ): px( p ), pn( p, d, a )
+    {
+        boost::detail::sp_assert_convertible< Y[], T[] >();
+    }
+
+//  generated copy constructor, destructor are fine...
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+// ... except in C++0x, move disables the implicit copy
+
+    shared_array( shared_array const & r ) BOOST_NOEXCEPT : px( r.px ), pn( r.pn )
+    {
+    }
+
+    shared_array( shared_array && r ) BOOST_NOEXCEPT : px( r.px ), pn()
+    {
+        pn.swap( r.pn );
+        r.px = 0;
+    }
+
+#endif
+
+    // conversion
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    shared_array( shared_array<Y> const & r, typename boost::detail::sp_enable_if_convertible< Y[], T[] >::type = boost::detail::sp_empty() )
+
+#else
+
+    shared_array( shared_array<Y> const & r )
+
+#endif
+    BOOST_NOEXCEPT : px( r.px ), pn( r.pn ) // never throws
+    {
+        boost::detail::sp_assert_convertible< Y[], T[] >();
+    }
+
+    // aliasing
+
+    template< class Y >
+    shared_array( shared_array<Y> const & r, element_type * p ) BOOST_NOEXCEPT : px( p ), pn( r.pn )
+    {
+    }
+
+    // assignment
+
+    shared_array & operator=( shared_array const & r ) BOOST_NOEXCEPT
+    {
+        this_type( r ).swap( *this );
+        return *this;
+    }
+
+#if !defined(BOOST_MSVC) || (BOOST_MSVC >= 1400)
+
+    template<class Y>
+    shared_array & operator=( shared_array<Y> const & r ) BOOST_NOEXCEPT
+    {
+        this_type( r ).swap( *this );
+        return *this;
+    }
+
+#endif
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+    shared_array & operator=( shared_array && r ) BOOST_NOEXCEPT
+    {
+        this_type( static_cast< shared_array && >( r ) ).swap( *this );
+        return *this;
+    }
+
+    template<class Y>
+    shared_array & operator=( shared_array<Y> && r ) BOOST_NOEXCEPT
+    {
+        this_type( static_cast< shared_array<Y> && >( r ) ).swap( *this );
+        return *this;
+    }
+
+#endif
+
+    void reset() BOOST_NOEXCEPT
+    {
+        this_type().swap( *this );
+    }
+
+    template<class Y> void reset( Y * p ) // Y must be complete
+    {
+        BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors
+        this_type( p ).swap( *this );
+    }
+
+    template<class Y, class D> void reset( Y * p, D d )
+    {
+        this_type( p, d ).swap( *this );
+    }
+
+    template<class Y, class D, class A> void reset( Y * p, D d, A a )
+    {
+        this_type( p, d, a ).swap( *this );
+    }
+
+    template<class Y> void reset( shared_array<Y> const & r, element_type * p )
+    {
+        this_type( r, p ).swap( *this );
+    }
+
+    T & operator[] (std::ptrdiff_t i) const // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT)
+    {
+        BOOST_ASSERT(px != 0);
+        BOOST_ASSERT(i >= 0);
+        return px[i];
+    }
+    
+    T * get() const BOOST_NOEXCEPT
+    {
+        return px;
+    }
+
+// implicit conversion to "bool"
+#include <boost/smart_ptr/detail/operator_bool.hpp>
+
+    bool unique() const BOOST_NOEXCEPT
+    {
+        return pn.unique();
+    }
+
+    long use_count() const BOOST_NOEXCEPT
+    {
+        return pn.use_count();
+    }
+
+    void swap(shared_array<T> & other) BOOST_NOEXCEPT
+    {
+        std::swap(px, other.px);
+        pn.swap(other.pn);
+    }
+
+    void * _internal_get_deleter( boost::detail::sp_typeinfo const & ti ) const
+    {
+        return pn.get_deleter( ti );
+    }
+
+private:
+
+    template<class Y> friend class shared_array;
+
+    T * px;                     // contained pointer
+    detail::shared_count pn;    // reference counter
+
+};  // shared_array
+
+template<class T> inline bool operator==(shared_array<T> const & a, shared_array<T> const & b) BOOST_NOEXCEPT
+{
+    return a.get() == b.get();
+}
+
+template<class T> inline bool operator!=(shared_array<T> const & a, shared_array<T> const & b) BOOST_NOEXCEPT
+{
+    return a.get() != b.get();
+}
+
+#if !defined( BOOST_NO_CXX11_NULLPTR )
+
+template<class T> inline bool operator==( shared_array<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
+{
+    return p.get() == 0;
+}
+
+template<class T> inline bool operator==( boost::detail::sp_nullptr_t, shared_array<T> const & p ) BOOST_NOEXCEPT
+{
+    return p.get() == 0;
+}
+
+template<class T> inline bool operator!=( shared_array<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
+{
+    return p.get() != 0;
+}
+
+template<class T> inline bool operator!=( boost::detail::sp_nullptr_t, shared_array<T> const & p ) BOOST_NOEXCEPT
+{
+    return p.get() != 0;
+}
+
+#endif
+
+template<class T> inline bool operator<(shared_array<T> const & a, shared_array<T> const & b) BOOST_NOEXCEPT
+{
+    return std::less<T*>()(a.get(), b.get());
+}
+
+template<class T> void swap(shared_array<T> & a, shared_array<T> & b) BOOST_NOEXCEPT
+{
+    a.swap(b);
+}
+
+template< class D, class T > D * get_deleter( shared_array<T> const & p )
+{
+    return static_cast< D * >( p._internal_get_deleter( BOOST_SP_TYPEID(D) ) );
+}
+
+} // namespace boost
+
+#endif  // #if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+
+#endif  // #ifndef BOOST_SMART_PTR_SHARED_ARRAY_HPP_INCLUDED
--- a/include/boost/smart_ptr/shared_ptr.hpp
+++ b/include/boost/smart_ptr/shared_ptr.hpp
--- a/include/boost/smart_ptr/weak_ptr.hpp
+++ b/include/boost/smart_ptr/weak_ptr.hpp
@@ -0,0 +1,253 @@
+#ifndef BOOST_SMART_PTR_WEAK_PTR_HPP_INCLUDED
+#define BOOST_SMART_PTR_WEAK_PTR_HPP_INCLUDED
+
+//
+//  weak_ptr.hpp
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/smart_ptr/weak_ptr.htm for documentation.
+//
+
+#include <memory> // boost.TR1 include order fix
+#include <boost/smart_ptr/detail/shared_count.hpp>
+#include <boost/smart_ptr/shared_ptr.hpp>
+
+namespace boost
+{
+
+template<class T> class weak_ptr
+{
+private:
+
+    // Borland 5.5.1 specific workarounds
+    typedef weak_ptr<T> this_type;
+
+public:
+
+    typedef typename boost::detail::sp_element< T >::type element_type;
+
+    weak_ptr() BOOST_NOEXCEPT : px(0), pn() // never throws in 1.30+
+    {
+    }
+
+//  generated copy constructor, assignment, destructor are fine...
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+// ... except in C++0x, move disables the implicit copy
+
+    weak_ptr( weak_ptr const & r ) BOOST_NOEXCEPT : px( r.px ), pn( r.pn )
+    {
+    }
+
+    weak_ptr & operator=( weak_ptr const & r ) BOOST_NOEXCEPT
+    {
+        px = r.px;
+        pn = r.pn;
+        return *this;
+    }
+
+#endif
+
+//
+//  The "obvious" converting constructor implementation:
+//
+//  template<class Y>
+//  weak_ptr(weak_ptr<Y> const & r): px(r.px), pn(r.pn) // never throws
+//  {
+//  }
+//
+//  has a serious problem.
+//
+//  r.px may already have been invalidated. The px(r.px)
+//  conversion may require access to *r.px (virtual inheritance).
+//
+//  It is not possible to avoid spurious access violations since
+//  in multithreaded programs r.px may be invalidated at any point.
+//
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    weak_ptr( weak_ptr<Y> const & r, typename boost::detail::sp_enable_if_convertible<Y,T>::type = boost::detail::sp_empty() )
+
+#else
+
+    weak_ptr( weak_ptr<Y> const & r )
+
+#endif
+    BOOST_NOEXCEPT : px(r.lock().get()), pn(r.pn)
+    {
+        boost::detail::sp_assert_convertible< Y, T >();
+    }
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    weak_ptr( weak_ptr<Y> && r, typename boost::detail::sp_enable_if_convertible<Y,T>::type = boost::detail::sp_empty() )
+
+#else
+
+    weak_ptr( weak_ptr<Y> && r )
+
+#endif
+    BOOST_NOEXCEPT : px( r.lock().get() ), pn( static_cast< boost::detail::weak_count && >( r.pn ) )
+    {
+        boost::detail::sp_assert_convertible< Y, T >();
+        r.px = 0;
+    }
+
+    // for better efficiency in the T == Y case
+    weak_ptr( weak_ptr && r )
+    BOOST_NOEXCEPT : px( r.px ), pn( static_cast< boost::detail::weak_count && >( r.pn ) )
+    {
+        r.px = 0;
+    }
+
+    // for better efficiency in the T == Y case
+    weak_ptr & operator=( weak_ptr && r ) BOOST_NOEXCEPT
+    {
+        this_type( static_cast< weak_ptr && >( r ) ).swap( *this );
+        return *this;
+    }
+
+
+#endif
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    weak_ptr( shared_ptr<Y> const & r, typename boost::detail::sp_enable_if_convertible<Y,T>::type = boost::detail::sp_empty() )
+
+#else
+
+    weak_ptr( shared_ptr<Y> const & r )
+
+#endif
+    BOOST_NOEXCEPT : px( r.px ), pn( r.pn )
+    {
+        boost::detail::sp_assert_convertible< Y, T >();
+    }
+
+#if !defined(BOOST_MSVC) || (BOOST_MSVC >= 1300)
+
+    template<class Y>
+    weak_ptr & operator=( weak_ptr<Y> const & r ) BOOST_NOEXCEPT
+    {
+        boost::detail::sp_assert_convertible< Y, T >();
+
+        px = r.lock().get();
+        pn = r.pn;
+
+        return *this;
+    }
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+    template<class Y>
+    weak_ptr & operator=( weak_ptr<Y> && r ) BOOST_NOEXCEPT
+    {
+        this_type( static_cast< weak_ptr<Y> && >( r ) ).swap( *this );
+        return *this;
+    }
+
+#endif
+
+    template<class Y>
+    weak_ptr & operator=( shared_ptr<Y> const & r ) BOOST_NOEXCEPT
+    {
+        boost::detail::sp_assert_convertible< Y, T >();
+
+        px = r.px;
+        pn = r.pn;
+
+        return *this;
+    }
+
+#endif
+
+    shared_ptr<T> lock() const BOOST_NOEXCEPT
+    {
+        return shared_ptr<T>( *this, boost::detail::sp_nothrow_tag() );
+    }
+
+    long use_count() const BOOST_NOEXCEPT
+    {
+        return pn.use_count();
+    }
+
+    bool expired() const BOOST_NOEXCEPT
+    {
+        return pn.use_count() == 0;
+    }
+
+    bool _empty() const // extension, not in std::weak_ptr
+    {
+        return pn.empty();
+    }
+
+    void reset() BOOST_NOEXCEPT // never throws in 1.30+
+    {
+        this_type().swap(*this);
+    }
+
+    void swap(this_type & other) BOOST_NOEXCEPT
+    {
+        std::swap(px, other.px);
+        pn.swap(other.pn);
+    }
+
+    template<typename Y>
+    void _internal_aliasing_assign(weak_ptr<Y> const & r, element_type * px2)
+    {
+        px = px2;
+        pn = r.pn;
+    }
+
+    template<class Y> bool owner_before( weak_ptr<Y> const & rhs ) const BOOST_NOEXCEPT
+    {
+        return pn < rhs.pn;
+    }
+
+    template<class Y> bool owner_before( shared_ptr<Y> const & rhs ) const BOOST_NOEXCEPT
+    {
+        return pn < rhs.pn;
+    }
+
+// Tasteless as this may seem, making all members public allows member templates
+// to work in the absence of member template friends. (Matthew Langston)
+
+#ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+
+private:
+
+    template<class Y> friend class weak_ptr;
+    template<class Y> friend class shared_ptr;
+
+#endif
+
+    element_type * px;            // contained pointer
+    boost::detail::weak_count pn; // reference counter
+
+};  // weak_ptr
+
+template<class T, class U> inline bool operator<(weak_ptr<T> const & a, weak_ptr<U> const & b) BOOST_NOEXCEPT
+{
+    return a.owner_before( b );
+}
+
+template<class T> void swap(weak_ptr<T> & a, weak_ptr<T> & b) BOOST_NOEXCEPT
+{
+    a.swap(b);
+}
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_WEAK_PTR_HPP_INCLUDED
--- a/include/boost/weak_ptr.hpp
+++ b/include/boost/weak_ptr.hpp
@@ -0,0 +1,18 @@
+#ifndef BOOST_WEAK_PTR_HPP_INCLUDED
+#define BOOST_WEAK_PTR_HPP_INCLUDED
+
+//
+//  weak_ptr.hpp
+//
+//  Copyright (c) 2001, 2002, 2003 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  See http://www.boost.org/libs/smart_ptr/weak_ptr.htm for documentation.
+//
+
+#include <boost/smart_ptr/weak_ptr.hpp>
+
+#endif  // #ifndef BOOST_WEAK_PTR_HPP_INCLUDED
--- a/index.html
+++ b/index.html
@@ -0,0 +1,15 @@
+<html>
+<head>
+<meta http-equiv="refresh" content="0; URL=smart_ptr.htm">
+</head>
+<body>
+Automatic redirection failed, please go to
+<a href="smart_ptr.htm">smart_ptr.htm</a>.
+</body>
+</html>
+<!--
+	<09> Copyright Beman Dawes, 2001
+	Distributed under the Boost Software License, Version 1.0.
+	See accompanying file LICENSE_1_0.txt or copy at
+	http://www.boost.org/LICENSE_1_0.txt
+-->
--- a/intrusive_ptr.html
+++ b/intrusive_ptr.html
@@ -0,0 +1,299 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+	<head>
+		<title>intrusive_ptr</title>
+		<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+	</head>
+	<body text="#000000" bgColor="#ffffff">
+		<h1><A href="../../index.htm"><IMG height="86" alt="boost.png (6897 bytes)" src="../../boost.png" width="277" align="middle"
+					border="0"></A>intrusive_ptr class template</h1>
+		<p>
+			<A href="#Introduction">Introduction</A><br>
+			<A href="#Synopsis">Synopsis</A><br>
+			<A href="#Members">Members</A><br>
+			<A href="#functions">Free Functions</A><br>
+		</p>
+		<h2><a name="Introduction">Introduction</a></h2>
+		<p>The <b>intrusive_ptr</b> class template stores a pointer to an object with an 
+			embedded reference count. Every new <b>intrusive_ptr</b> instance increments 
+			the reference count by using an unqualified call to the function <STRONG>intrusive_ptr_add_ref</STRONG>, 
+			passing it the pointer as an argument. Similarly, when an <STRONG>intrusive_ptr</STRONG>
+			is destroyed, it calls <STRONG>intrusive_ptr_release</STRONG>; this function is 
+			responsible for destroying the object when its reference count drops to zero. 
+			The user is expected to provide suitable definitions of these two functions. On 
+			compilers that support argument-dependent lookup, <STRONG>intrusive_ptr_add_ref</STRONG>
+			and <STRONG>intrusive_ptr_release</STRONG> should be defined in the namespace 
+			that corresponds to their parameter; otherwise, the definitions need to go in 
+			namespace <STRONG>boost</STRONG>. The library provides a helper base class template
+			<STRONG><a href="intrusive_ref_counter.html">intrusive_ref_counter</a></STRONG> which may
+			help adding support for <STRONG>intrusive_ptr</STRONG> to user&apos;s types.</p>
+		<p>The class template is parameterized on <b>T</b>, the type of the object pointed 
+			to. <STRONG>intrusive_ptr&lt;T&gt;</STRONG> can be implicitly converted to <STRONG>intrusive_ptr&lt;U&gt;</STRONG>
+			whenever <STRONG>T*</STRONG> can be implicitly converted to <STRONG>U*</STRONG>.</p>
+		<P>The main reasons to use <STRONG>intrusive_ptr</STRONG> are:</P>
+		<UL>
+			<LI>
+			Some existing frameworks or OSes provide objects with embedded reference 
+			counts;
+			<LI>
+				The memory footprint of <STRONG>intrusive_ptr</STRONG>
+			is the same as the corresponding raw pointer;
+			<LI>
+				<STRONG>intrusive_ptr&lt;T&gt;</STRONG> can be constructed from an arbitrary 
+				raw pointer of type <STRONG>T *</STRONG>.</LI></UL>
+		<P>As a general rule, if it isn't obvious whether <STRONG>intrusive_ptr</STRONG> better 
+			fits your needs than <STRONG>shared_ptr</STRONG>, try a <STRONG>shared_ptr</STRONG>-based 
+			design first.</P>
+		<h2><a name="Synopsis">Synopsis</a></h2>
+		<pre>namespace boost {
+
+  template&lt;class T&gt; class intrusive_ptr {
+
+    public:
+
+      typedef T <A href="#element_type" >element_type</A>;
+
+      <A href="#constructors" >intrusive_ptr</A>(); // never throws
+      <A href="#constructors" >intrusive_ptr</A>(T * p, bool add_ref = true);
+
+      <A href="#constructors" >intrusive_ptr</A>(intrusive_ptr const &amp; r);
+      template&lt;class Y&gt; <A href="#constructors" >intrusive_ptr</A>(intrusive_ptr&lt;Y&gt; const &amp; r);
+
+      <A href="#destructor" >~intrusive_ptr</A>();
+
+      intrusive_ptr &amp; <A href="#assignment" >operator=</A>(intrusive_ptr const &amp; r);
+      template&lt;class Y&gt; intrusive_ptr &amp; <A href="#assignment" >operator=</A>(intrusive_ptr&lt;Y&gt; const &amp; r);
+      intrusive_ptr &amp; <A href="#assignment" >operator=</A>(T * r);
+
+      void <a href="#reset" >reset</a>();
+      void <a href="#reset" >reset</a>(T * r);
+
+      T &amp; <A href="#indirection" >operator*</A>() const; // never throws
+      T * <A href="#indirection" >operator-&gt;</A>() const; // never throws
+      T * <A href="#get" >get</A>() const; // never throws
+
+      operator <A href="#conversions" ><i>unspecified-bool-type</i></A>() const; // never throws
+
+      void <A href="#swap" >swap</A>(intrusive_ptr &amp; b); // never throws
+  };
+
+  template&lt;class T, class U&gt;
+    bool <A href="#comparison" >operator==</A>(intrusive_ptr&lt;T&gt; const &amp; a, intrusive_ptr&lt;U&gt; const &amp; b); // never throws
+
+  template&lt;class T, class U&gt;
+    bool <A href="#comparison" >operator!=</A>(intrusive_ptr&lt;T&gt; const &amp; a, intrusive_ptr&lt;U&gt; const &amp; b); // never throws
+
+  template&lt;class T&gt;
+    bool <A href="#comparison" >operator==</A>(intrusive_ptr&lt;T&gt; const &amp; a, T * b); // never throws
+
+  template&lt;class T&gt;
+    bool <A href="#comparison" >operator!=</A>(intrusive_ptr&lt;T&gt; const &amp; a, T * b); // never throws
+
+  template&lt;class T&gt;
+    bool <A href="#comparison" >operator==</A>(T * a, intrusive_ptr&lt;T&gt; const &amp; b); // never throws
+
+  template&lt;class T&gt;
+    bool <A href="#comparison" >operator!=</A>(T * a, intrusive_ptr&lt;T&gt; const &amp; b); // never throws
+
+  template&lt;class T, class U&gt;
+    bool <A href="#comparison" >operator&lt;</A>(intrusive_ptr&lt;T&gt; const &amp; a, intrusive_ptr&lt;U&gt; const &amp; b); // never throws
+
+  template&lt;class T&gt; void <A href="#free-swap" >swap</A>(intrusive_ptr&lt;T&gt; &amp; a, intrusive_ptr&lt;T&gt; &amp; b); // never throws
+
+  template&lt;class T&gt; T * <A href="#get_pointer" >get_pointer</A>(intrusive_ptr&lt;T&gt; const &amp; p); // never throws
+
+  template&lt;class T, class U&gt;
+    intrusive_ptr&lt;T&gt; <A href="#static_pointer_cast" >static_pointer_cast</A>(intrusive_ptr&lt;U&gt; const &amp; r); // never throws
+
+  template&lt;class T, class U&gt;
+    intrusive_ptr&lt;T&gt; <A href="#const_pointer_cast" >const_pointer_cast</A>(intrusive_ptr&lt;U&gt; const &amp; r); // never throws
+
+  template&lt;class T, class U&gt;
+    intrusive_ptr&lt;T&gt; <A href="#dynamic_pointer_cast" >dynamic_pointer_cast</A>(intrusive_ptr&lt;U&gt; const &amp; r); // never throws
+
+  template&lt;class E, class T, class Y&gt;
+    std::basic_ostream&lt;E, T&gt; &amp; <A href="#insertion-operator" >operator&lt;&lt;</A> (std::basic_ostream&lt;E, T&gt; &amp; os, intrusive_ptr&lt;Y&gt; const &amp; p);
+
+}</pre>
+		<h2><a name="Members">Members</a></h2>
+		<h3><a name="element_type">element_type</a></h3>
+		<pre>typedef T element_type;</pre>
+		<blockquote>
+			<p>Provides the type of the template parameter T.</p>
+		</blockquote>
+		<h3><a name="constructors">constructors</a></h3>
+		<pre>intrusive_ptr(); // never throws</pre>
+		<blockquote>
+			<p><b>Postconditions:</b> <code>get() == 0</code>.</p>
+			<p><b>Throws:</b> nothing.</p>
+		</blockquote>
+		<pre>intrusive_ptr(T * p, bool add_ref = true);</pre>
+		<blockquote>
+			<p><b>Effects:</b> <code>if(p != 0 &amp;&amp; add_ref) intrusive_ptr_add_ref(p);</code>.</p>
+			<p><b>Postconditions:</b> <code>get() == p</code>.</p>
+		</blockquote>
+		<pre>intrusive_ptr(intrusive_ptr const &amp; r);
+template&lt;class Y&gt; intrusive_ptr(intrusive_ptr&lt;Y&gt; const &amp; r);</pre>
+		<blockquote>
+			<p><b>Effects:</b> <code>if(r.get() != 0) intrusive_ptr_add_ref(r.get());</code>.</p>
+			<p><b>Postconditions:</b> <code>get() == r.get()</code>.</p>
+		</blockquote>
+		<h3><a name="destructor">destructor</a></h3>
+		<pre>~intrusive_ptr();</pre>
+		<BLOCKQUOTE>
+			<P><B>Effects:</B> <code>if(get() != 0) intrusive_ptr_release(get());</code>.</P>
+		</BLOCKQUOTE>
+		<H3><a name="assignment">assignment</a></H3>
+		<pre>intrusive_ptr &amp; operator=(intrusive_ptr const &amp; r);
+template&lt;class Y&gt; intrusive_ptr &amp; operator=(intrusive_ptr&lt;Y&gt; const &amp; r);
+intrusive_ptr &amp; operator=(T * r);</pre>
+		<BLOCKQUOTE>
+			<P><B>Effects:</B> Equivalent to <code>intrusive_ptr(r).swap(*this)</code>.</P>
+			<P><B>Returns:</B> <code>*this</code>.</P>
+		</BLOCKQUOTE>
+		<H3><a name="reset">reset</a></H3>
+		<pre>void reset();</pre>
+		<BLOCKQUOTE>
+			<P><B>Effects:</B> Equivalent to <code>intrusive_ptr().swap(*this)</code>.</P>
+		</BLOCKQUOTE>
+		<pre>void reset(T * r);</pre>
+		<BLOCKQUOTE>
+			<P><B>Effects:</B> Equivalent to <code>intrusive_ptr(r).swap(*this)</code>.</P>
+		</BLOCKQUOTE>
+		<h3><a name="indirection">indirection</a></h3>
+		<pre>T &amp; operator*() const; // never throws</pre>
+		<blockquote>
+			<p><b>Requirements:</b> <code>get() != 0</code>.</p>
+			<p><b>Returns:</b> <code>*get()</code>.</p>
+			<p><b>Throws:</b> nothing.</p>
+		</blockquote>
+		<pre>T * operator-&gt;() const; // never throws</pre>
+		<blockquote>
+			<p><b>Requirements:</b> <code>get() != 0</code>.</p>
+			<p><b>Returns:</b> <code>get()</code>.</p>
+			<p><b>Throws:</b> nothing.</p>
+		</blockquote>
+		<h3><a name="get">get</a></h3>
+		<pre>T * get() const; // never throws</pre>
+		<blockquote>
+			<p><b>Returns:</b> the stored pointer.</p>
+			<p><b>Throws:</b> nothing.</p>
+		</blockquote>
+		<h3><a name="conversions">conversions</a></h3>
+		<pre>operator <i>unspecified-bool-type</i> () const; // never throws</pre>
+		<blockquote>
+			<p><b>Returns:</b> an unspecified value that, when used in boolean contexts, is 
+				equivalent to <code>get() != 0</code>.</p>
+			<p><b>Throws:</b> nothing.</p>
+			<P><B>Notes:</B> This conversion operator allows <b>intrusive_ptr</b> objects to be 
+				used in boolean contexts, like <code>if (p &amp;&amp; p-&gt;valid()) {}</code>. 
+				The actual target type is typically a pointer to a member function, avoiding 
+				many of the implicit conversion pitfalls.</P>
+		</blockquote>
+		<h3><a name="swap">swap</a></h3>
+		<pre>void swap(intrusive_ptr &amp; b); // never throws</pre>
+		<blockquote>
+			<p><b>Effects:</b> Exchanges the contents of the two smart pointers.</p>
+			<p><b>Throws:</b> nothing.</p>
+		</blockquote>
+		<h2><a name="functions">Free Functions</a></h2>
+		<h3><a name="comparison">comparison</a></h3>
+		<pre>template&lt;class T, class U&gt;
+  bool operator==(intrusive_ptr&lt;T&gt; const &amp; a, intrusive_ptr&lt;U&gt; const &amp; b); // never throws</pre>
+		<blockquote>
+			<p><b>Returns:</b> <code>a.get() == b.get()</code>.</p>
+			<p><b>Throws:</b> nothing.</p>
+		</blockquote>
+		<pre>template&lt;class T, class U&gt;
+  bool operator!=(intrusive_ptr&lt;T&gt; const &amp; a, intrusive_ptr&lt;U&gt; const &amp; b); // never throws</pre>
+		<blockquote>
+			<p><b>Returns:</b> <code>a.get() != b.get()</code>.</p>
+			<p><b>Throws:</b> nothing.</p>
+		</blockquote>
+		<pre>template&lt;class T, class U&gt;
+  bool operator==(intrusive_ptr&lt;T&gt; const &amp; a, U * b); // never throws</pre>
+		<blockquote>
+			<p><b>Returns:</b> <code>a.get() == b</code>.</p>
+			<p><b>Throws:</b> nothing.</p>
+		</blockquote>
+		<pre>template&lt;class T, class U&gt;
+  bool operator!=(intrusive_ptr&lt;T&gt; const &amp; a, U * b); // never throws</pre>
+		<blockquote>
+			<p><b>Returns:</b> <code>a.get() != b</code>.</p>
+			<p><b>Throws:</b> nothing.</p>
+		</blockquote>
+		<pre>template&lt;class T, class U&gt;
+  bool operator==(T * a, intrusive_ptr&lt;U&gt; const &amp; b); // never throws</pre>
+		<blockquote>
+			<p><b>Returns:</b> <code>a == b.get()</code>.</p>
+			<p><b>Throws:</b> nothing.</p>
+		</blockquote>
+		<pre>template&lt;class T, class U&gt;
+  bool operator!=(T * a, intrusive_ptr&lt;U&gt; const &amp; b); // never throws</pre>
+		<blockquote>
+			<p><b>Returns:</b> <code>a != b.get()</code>.</p>
+			<p><b>Throws:</b> nothing.</p>
+		</blockquote>
+		<pre>template&lt;class T, class U&gt;
+  bool operator&lt;(intrusive_ptr&lt;T&gt; const &amp; a, intrusive_ptr&lt;U&gt; const &amp; b); // never throws</pre>
+		<blockquote>
+			<p><b>Returns:</b> <code>std::less&lt;T *&gt;()(a.get(), b.get())</code>.</p>
+			<p><b>Throws:</b> nothing.</p>
+			<P><B>Notes:</B> Allows <STRONG>intrusive_ptr</STRONG> objects to be used as keys 
+				in associative containers.</P>
+		</blockquote>
+		<h3><a name="free-swap">swap</a></h3>
+		<pre>template&lt;class T&gt;
+  void swap(intrusive_ptr&lt;T&gt; &amp; a, intrusive_ptr&lt;T&gt; &amp; b); // never throws</pre>
+		<BLOCKQUOTE>
+			<P><B>Effects:</B> Equivalent to <code>a.swap(b)</code>.</P>
+			<P><B>Throws:</B> nothing.</P>
+			<P><B>Notes:</B> Matches the interface of <B>std::swap</B>. Provided as an aid to 
+				generic programming.</P>
+		</BLOCKQUOTE>
+		<h3><a name="get_pointer">get_pointer</a></h3>
+		<pre>template&lt;class T&gt;
+  T * get_pointer(intrusive_ptr&lt;T&gt; const &amp; p); // never throws</pre>
+		<BLOCKQUOTE>
+			<P><B>Returns:</B> <code>p.get()</code>.</P>
+			<P><B>Throws:</B> nothing.</P>
+			<P><B>Notes:</B> Provided as an aid to generic programming. Used by <A href="../bind/mem_fn.html">
+					mem_fn</A>.</P>
+		</BLOCKQUOTE>
+		<h3><a name="static_pointer_cast">static_pointer_cast</a></h3>
+		<pre>template&lt;class T, class U&gt;
+  intrusive_ptr&lt;T&gt; static_pointer_cast(intrusive_ptr&lt;U&gt; const &amp; r); // never throws</pre>
+		<BLOCKQUOTE>
+			<P><B>Returns:</B> <code>intrusive_ptr&lt;T&gt;(static_cast&lt;T*&gt;(r.get()))</code>.</P>
+			<P><B>Throws:</B> nothing.</P>
+		</BLOCKQUOTE>
+		<h3><a name="const_pointer_cast">const_pointer_cast</a></h3>
+		<pre>template&lt;class T, class U&gt;
+  intrusive_ptr&lt;T&gt; const_pointer_cast(intrusive_ptr&lt;U&gt; const &amp; r); // never throws</pre>
+		<BLOCKQUOTE>
+			<P><B>Returns:</B> <code>intrusive_ptr&lt;T&gt;(const_cast&lt;T*&gt;(r.get()))</code>.</P>
+			<P><B>Throws:</B> nothing.</P>
+		</BLOCKQUOTE>
+		<h3><a name="dynamic_pointer_cast">dynamic_pointer_cast</a></h3>
+		<pre>template&lt;class T, class U&gt;
+  intrusive_ptr&lt;T&gt; dynamic_pointer_cast(intrusive_ptr&lt;U&gt; const &amp; r);</pre>
+		<BLOCKQUOTE>
+			<P><B>Returns:</B> <code>intrusive_ptr&lt;T&gt;(dynamic_cast&lt;T*&gt;(r.get()))</code>.</P>
+			<P><B>Throws:</B> nothing.</P>
+		</BLOCKQUOTE>
+		<h3><a name="insertion-operator">operator&lt;&lt;</a></h3>
+		<pre>template&lt;class E, class T, class Y&gt;
+    std::basic_ostream&lt;E, T&gt; &amp; operator&lt;&lt; (std::basic_ostream&lt;E, T&gt; &amp; os, intrusive_ptr&lt;Y&gt; const &amp; p);</pre>
+		<BLOCKQUOTE>
+			<p><STRONG>Effects:</STRONG> <code>os &lt;&lt; p.get();</code>.</p>
+			<P><B>Returns:</B> <code>os</code>.</P>
+		</BLOCKQUOTE>
+		<hr>
+		<p>
+			$Date$</p>
+		<p>
+			<small>Copyright <20> 2003-2005 Peter Dimov. Distributed under the Boost Software License, Version 
+				1.0. See accompanying file <A href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</A> or 
+				copy at <A href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</A>.</small></p>
+	</body>
+</html>
--- a/intrusive_ref_counter.html
+++ b/intrusive_ref_counter.html
@@ -0,0 +1,95 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+    <head>
+        <title>intrusive_ref_counter</title>
+        <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+    </head>
+    <body text="#000000" bgColor="#ffffff">
+        <h1><A href="../../index.htm"><IMG height="86" alt="boost.png (6897 bytes)" src="../../boost.png" width="277" align="middle"
+                    border="0"></A>basic_intrusive_ref_counter class template</h1>
+        <p>
+            <A href="#Introduction">Introduction</A><br>
+            <A href="#Synopsis">Synopsis</A><br>
+            <A href="#Members">Members</A><br>
+        </p>
+        <h2><a name="Introduction">Introduction</a></h2>
+        <p>The <STRONG>intrusive_ref_counter</STRONG> class template implements a reference counter for a derived
+            user&apos;s class that is intended to be used with <STRONG><a href="intrusive_ptr.html">intrusive_ptr</a></STRONG>.
+            The base class has associated <STRONG>intrusive_ptr_add_ref</STRONG> and <STRONG>intrusive_ptr_release</STRONG> functions
+            which modify the reference counter as needed and destroy the user's object when the counter drops to zero.</p>
+        <p>The class template is parameterized on <STRONG>DerivedT</STRONG> and <STRONG>CounterPolicyT</STRONG> parameters.
+            The first parameter is the user&apos;s class that derives from <STRONG>intrusive_ref_counter</STRONG>. This type
+            is needed in order to destroy the object correctly when there are no references to it left.</p>
+        <p>The second parameter is a policy that defines the nature of the reference counter.
+            Boost.SmartPtr provides two such policies: <STRONG>thread_unsafe_counter</STRONG> and <STRONG>thread_safe_counter</STRONG>. The former
+            instructs the <STRONG>intrusive_ref_counter</STRONG> base class to use a counter only suitable for a single-threaded use.
+            Pointers to a single object that uses this kind of reference counter must not be used in different threads. The latter policy
+            makes the reference counter thread-safe, unless the target platform doesn't support threading. Since in modern systems support for
+            threading is common, the default counter policy is <STRONG>thread_safe_counter</STRONG>.</p>
+        <h2><a name="Synopsis">Synopsis</a></h2>
+        <pre>namespace boost {
+
+  struct thread_unsafe_counter;
+  struct thread_safe_counter;
+
+  template&lt;class DerivedT, class CounterPolicyT = thread_safe_counter&gt;
+  class intrusive_ref_counter
+  {
+  public:
+      <A href="#constructors" >intrusive_ref_counter</A>() = noexcept;
+      <A href="#constructors" >intrusive_ref_counter</A>(intrusive_ref_counter const &amp; r) = noexcept;
+
+      intrusive_ref_counter &amp; <A href="#assignment" >operator=</A>(intrusive_ref_counter const &amp; r) noexcept;
+
+      unsigned int <a href="#use_count" >use_count</a>() const noexcept;
+
+  protected:
+      <A href="#destructor" >~intrusive_ref_counter</A>() = default;
+  };
+
+}</pre>
+        <h2><a name="Members">Members</a></h2>
+        <h3><a name="constructors">constructors</a></h3>
+        <pre>intrusive_ref_counter();</pre>
+        <blockquote>
+            <p><b>Postconditions:</b> <code>use_count() == 0</code>.</p>
+            <p><b>Throws:</b> nothing.</p>
+            <P><B>Notes:</B> The pointer to the constructed object is expected to be passed to <STRONG>intrusive_ptr</STRONG>
+            constructor, assignment operator or <STRONG>reset()</STRONG> method, which would increment the reference counter.</P>
+        </blockquote>
+        <pre>intrusive_ref_counter(intrusive_ref_counter const &amp;);</pre>
+        <blockquote>
+            <p><b>Postconditions:</b> <code>use_count() == 0</code>.</p>
+            <p><b>Throws:</b> nothing.</p>
+            <P><B>Notes:</B> The pointer to the constructed object is expected to be passed to <STRONG>intrusive_ptr</STRONG>
+            constructor, assignment operator or <STRONG>reset()</STRONG> method, which would increment the reference counter.</P>
+        </blockquote>
+        <h3><a name="destructor">destructor</a></h3>
+        <pre>~intrusive_ref_counter();</pre>
+        <BLOCKQUOTE>
+            <p><b>Throws:</b> nothing.</p>
+            <P><B>Effects:</B> Destroys the counter object.</P>
+            <P><B>Notes:</B> The destructor is protected so that the object can only be destroyed through the <STRONG>DerivedT</STRONG> class.</P>
+        </BLOCKQUOTE>
+        <H3><a name="assignment">assignment</a></H3>
+        <pre>intrusive_ref_counter &amp; operator=(intrusive_ref_counter const &amp; r) noexcept;</pre>
+        <BLOCKQUOTE>
+            <P><B>Effects:</B> Does nothing, reference counter is not modified.</P>
+            <P><B>Returns:</B> <code>*this</code>.</P>
+        </BLOCKQUOTE>
+        <H3><a name="use_count">use_count</a></H3>
+        <pre>unsigned int use_count() const noexcept;</pre>
+        <BLOCKQUOTE>
+            <p><b>Returns:</b> The current value of the reference counter.</p>
+            <p><b>Throws:</b> nothing.</p>
+            <P><B>Notes:</B> The returned value may not be actual in multi-threaded applications.</P>
+        </BLOCKQUOTE>
+        <hr>
+        <p>
+            $Date$</p>
+        <p>
+            <small>Copyright <20> 2013 Andrey Semashev. Distributed under the Boost Software License, Version 
+                1.0. See accompanying file <A href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</A> or 
+                copy at <A href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</A>.</small></p>
+    </body>
+</html>
--- a/make_shared.html
+++ b/make_shared.html
@@ -0,0 +1,119 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+	<head>
+		<title>make_shared and allocate_shared</title>
+		<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+	</head>
+	<body text="#000000" bgColor="#ffffff">
+		<h1><A href="../../index.htm"><IMG height="86" alt="boost.png (6897 bytes)" src="../../boost.png" width="277" align="middle"
+					border="0"></A>make_shared and allocate_shared function templates</h1>
+		<p><A href="#Introduction">Introduction</A><br>
+			<A href="#Synopsis">Synopsis</A><br>
+			<A href="#functions">Free Functions</A><br>
+			<A href="#example">Example</A><br>
+		<h2><a name="Introduction">Introduction</a></h2>
+		<p>Consistent use of <a href="shared_ptr.htm"><code>shared_ptr</code></a>
+			can eliminate the need to use an explicit <code>delete</code>,
+			but alone it provides no support in avoiding explicit <code>new</code>.
+			There have been repeated requests from users for a factory function that creates
+			an object of a given type and returns a <code>shared_ptr</code> to it.
+			Besides convenience and style, such a function is also exception safe and
+			considerably faster because it can use a single allocation for both the object
+			and its corresponding control block, eliminating a significant portion of
+			<code>shared_ptr</code>'s construction overhead.
+			This eliminates one of the major efficiency complaints about <code>shared_ptr</code>.
+		</p>
+		<p>The header file &lt;boost/make_shared.hpp&gt; provides a family of overloaded function templates,
+			<code>make_shared</code> and <code>allocate_shared</code>, to address this need.
+			<code>make_shared</code> uses the global operator <code>new</code> to allocate memory,
+			whereas <code>allocate_shared</code> uses an user-supplied allocator, allowing finer control.</p>
+		<p>
+			The rationale for choosing the name <code>make_shared</code> is that the expression
+			<code>make_shared&lt;Widget&gt;()</code> can be read aloud and conveys the intended meaning.</p>
+		<h2><a name="Synopsis">Synopsis</a></h2>
+		<pre>namespace boost {
+
+  template&lt;typename T&gt; class shared_ptr;
+
+  template&lt;typename T&gt;
+    shared_ptr&lt;T&gt; <a href="#functions">make_shared</a>();
+
+  template&lt;typename T, typename A&gt;
+    shared_ptr&lt;T&gt; <a href="#functions">allocate_shared</a>( A const &amp; );
+
+#if !defined( BOOST_NO_CXX11_VARIADIC_TEMPLATES ) && !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )	// C++0x prototypes
+
+  template&lt;typename T, typename... Args&gt;
+    shared_ptr&lt;T&gt; <a href="#functions">make_shared</a>( Args &amp;&amp; ... args );
+
+  template&lt;typename T, typename A, typename... Args&gt;
+    shared_ptr&lt;T&gt; <a href="#functions">allocate_shared</a>( A const &amp; a, Args &amp;&amp; ... args );
+
+#else // no C++0X support
+
+  template&lt;typename T, typename Arg1 &gt;
+    shared_ptr&lt;T&gt; <a href="#functions">make_shared</a>( Arg1 const &amp; arg1 );
+  template&lt;typename T, typename Arg1, typename Arg2 &gt;
+    shared_ptr&lt;T&gt; <a href="#functions">make_shared</a>( Arg1 const &amp; arg1, Arg2 const &amp; arg2 );
+// ...
+  template&lt;typename T, typename Arg1, typename Arg2, ..., typename ArgN &gt;
+    shared_ptr&lt;T&gt; <a href="#functions">make_shared</a>( Arg1 const &amp; arg1, Arg2 const &amp; arg2, ..., ArgN const &amp; argN );
+
+  template&lt;typename T, typename A, typename Arg1 &gt;
+    shared_ptr&lt;T&gt; <a href="#functions">allocate_shared</a>( A const &amp; a, Arg1 const &amp; arg1 );
+  template&lt;typename T, typename A, typename Arg1, typename Arg2 &gt;
+    shared_ptr&lt;T&gt; <a href="#functions">allocate_shared</a>( Arg1 const &amp; arg1, Arg2 const &amp; arg2 );
+// ...
+  template&lt;typename T, typename A, typename Arg1, typename Arg2, ..., typename ArgN &gt;
+    shared_ptr&lt;T&gt; <a href="#functions">allocate_shared</a>( A const &amp; a, Arg1 const &amp; arg1, Arg2 const &amp; arg2, ..., ArgN const &amp; argN );
+
+#endif
+}</pre>
+		<h2><a name="functions">Free Functions</a></h2>
+		<pre>template&lt;class T, class... Args&gt;
+    shared_ptr&lt;T&gt; make_shared( Args &amp;&amp; ... args );
+template&lt;class T, class A, class... Args&gt;
+    shared_ptr&lt;T&gt; allocate_shared( A const &amp; a, Args &amp;&amp; ... args );</pre>
+		<blockquote>
+			<p><b>Requires:</b> The expression <code>new( pv ) T( std::forward&lt;Args&gt;(args)... )</code>,
+				where <code>pv</code> is a <code>void*</code> pointing to storage suitable
+				to hold an object of type <code>T</code>,
+				shall be well-formed.  <code>A</code> shall be an <em>Allocator</em>,
+				as described in section 20.1.5 (<stong>Allocator requirements</strong>) of the C++ Standard.
+				The copy constructor and destructor of <code>A</code> shall not throw.</p>
+			<p><b>Effects:</b> Allocates memory suitable for an object of type <code>T</code>
+				and constructs an object in it via the placement new expression <code>new( pv ) T()</code>
+				or <code>new( pv ) T( std::forward&lt;Args&gt;(args)... )</code>.
+				<code>allocate_shared</code> uses a copy of <code>a</code> to allocate memory.
+				If an exception is thrown, has no effect.</p>
+			<p><b>Returns:</b> A <code>shared_ptr</code> instance that stores and owns the address
+				of the newly constructed object of type <code>T</code>.</p>
+			<p><b>Postconditions:</b> <code>get() != 0 &amp;&amp; use_count() == 1</code>.</p>
+			<p><b>Throws:</b> <code>bad_alloc</code>, or an exception thrown from <code>A::allocate</code>
+				or the constructor of <code>T</code>.</p>
+			<p><b>Notes:</b> This implementation allocates the memory required for the
+			returned <code>shared_ptr</code> and an object of type <code>T</code> in a single
+			allocation. This provides efficiency equivalent to an intrusive smart pointer.</p>
+			<p>The prototypes shown above are used if your compiler supports rvalue references
+			and variadic templates.  They perfectly forward the <code>args</code> parameters to
+			the constructors of <code>T</code>.</p>
+			<p>Otherwise, the implementation will fall back on
+			forwarding the arguments to the constructors of <code>T</code> as const references.
+			If you need to pass a non-const reference to a constructor of <code>T</code>,
+			you may do so by wrapping the parameter in a call to <code>boost::ref</code>.
+			In addition, you will be
+			limited to a maximum of 9 arguments (not counting the allocator argument of
+			allocate_shared).</p>
+		</blockquote>
+		<h2><a name="example">Example</a></h2>
+		<pre>boost::shared_ptr&lt;std::string&gt; x = boost::make_shared&lt;std::string&gt;("hello, world!");
+std::cout << *x;</pre>
+		<hr>
+		<p>
+			$Date: 2008-05-19 15:42:39 -0400 (Mon, 19 May 2008) $</p>
+		<p><small>Copyright 2008 Peter Dimov. Copyright 2008 Frank Mori Hess.
+				Distributed under the Boost Software License,
+				Version 1.0. See accompanying file <A href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</A>
+				or copy at <A href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</A>.</small></p>
+	</body>
+</html>
--- a/make_shared_array.html
+++ b/make_shared_array.html
@@ -0,0 +1,257 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+  <head>
+    <title>make_shared and allocate_shared</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+  </head>
+  <body text="#000000" bgColor="#ffffff" link="#0000ff" vlink="#0000ff">
+    <h1><IMG height="86" alt="boost.png (6897 bytes)" src="../../boost.png" 
+      width="277" align="middle" border="0">make_shared and allocate_shared 
+      for arrays</h1>
+    <p><A href="#Introduction">Introduction</A><br>
+      <A href="#Synopsis">Synopsis</A><br>
+      <A href="#functions">Free Functions</A><br>
+      <A href="#example">Example</A><br>
+      <A href="#history">History</A><br></p>
+    <h2><a name="Introduction">Introduction</a></h2>
+    <p>Originally the Boost function templates <code>make_shared</code> and 
+      <code>allocate_shared</code> were for efficient allocation of single 
+      objects only. There was a need to have efficient, single, allocation of 
+      arrays. One criticism of <a href="shared_array.htm">shared_array</a> was 
+      always the lack of a <a href="make_shared.html">make_shared</a> utility 
+      which ensures only a single allocation for an array.</p>
+    <p>The header files &lt;boost/smart_ptr/make_shared_array.hpp&gt; and 
+      &lt;boost/smart_ptr/allocate_shared_array.hpp&gt; provide new function 
+      templates, <code>make_shared</code> and <code>allocate_shared</code>, 
+      to address this need. <code>make_shared</code> uses the global 
+      operator <code>new</code> to allocate memory, whereas 
+      <code>allocate_shared</code> uses an user-supplied allocator, 
+      allowing finer control.</p>
+    <h2><a name="Synopsis">Synopsis</a></h2>
+    <pre>namespace boost {
+    template&lt;typename U&gt; // U = T[]
+    shared_ptr&lt;U&gt; <a href="#functions">make_shared</a>(size_t size);
+
+    template&lt;typename U, typename A&gt; // U = T[]
+    shared_ptr&lt;U&gt; <a href="#functions">allocate_shared</a>(const A&amp; allocator, size_t size);
+
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) &amp;&amp; !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)   
+    template&lt;typename U, typename... Args&gt; // U = T[]
+    shared_ptr&lt;U&gt; <a href="#functions">make_shared</a>(size_t size, Args&amp;&amp;... args);
+
+    template&lt;typename U, typename... Args&gt; // U = T[N]
+    shared_ptr&lt;U&gt; <a href="#functions">make_shared</a>(Args&amp;&amp;... args);
+
+    template&lt;typename U, typename A, typename... Args&gt; // U = T[]
+    shared_ptr&lt;U&gt; <a href="#functions">allocate_shared</a>(const A&amp; allocator, size_t size, Args&amp;&amp;... args);
+
+    template&lt;typename U, typename A, typename... Args&gt; // U = T[N]
+    shared_ptr&lt;U&gt; <a href="#functions">allocate_shared</a>(const A&amp; allocator, Args&amp;&amp;... args);
+#endif
+
+#if !defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX)    
+    template&lt;typename U, typename... Args&gt; // U = T[N]
+    shared_ptr&lt;U&gt; <a href="#functions">make_shared</a>(const T (&amp;list)[N]);
+
+    template&lt;typename U, typename... Args&gt; // U = T[][N]
+    shared_ptr&lt;U&gt; <a href="#functions">make_shared</a>(size_t size, const T (&amp;list)[N]);
+
+    template&lt;typename U, typename... Args&gt; // U = T[M][N]
+    shared_ptr&lt;U&gt; <a href="#functions">make_shared</a>(const T (&amp;list)[N]);
+
+    template&lt;typename U, typename A, typename... Args&gt; // U = T[N]
+    shared_ptr&lt;T[&gt; <a href="#functions">allocate_shared</a>(const A&amp; allocator, const T (&amp;list)[N]);
+
+    template&lt;typename U, typename A, typename... Args&gt; // U = T[][N]
+    shared_ptr&lt;U&gt; <a href="#functions">allocate_shared</a>(const A&amp; allocator, size_t size, const T (&amp;list)[N]);
+
+    template&lt;typename U, typename A, typename... Args&gt; // U = T[M][N]
+    shared_ptr&lt;U&gt; <a href="#functions">allocate_shared</a>(const A&amp; allocator, const T (&amp;list)[N]);
+
+#if !defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST)
+    template&lt;typename U, typename... Args&gt; // U = T[]
+    shared_ptr&lt;U&gt; <a href="#functions">make_shared</a>(initializer_list&lt;T&gt; list);
+
+    template&lt;typename U, typename A, typename... Args&gt; // U = T[]
+    shared_ptr&lt;U&gt; <a href="#functions">allocate_shared</a>(const A&amp; allocator, initializer_list&lt;T&gt; list);
+#endif
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)    
+    template&lt;typename U&gt; // U = T[]
+    shared_ptr&lt;U&gt; <a href="#functions">make_shared</a>(size_t size, T&amp;&amp; value);
+
+    template&lt;typename U&gt; // U = T[N]
+    shared_ptr&lt;U&gt; <a href="#functions">make_shared</a>(T&amp;&amp; value);
+
+    template&lt;typename U, typename A&gt; // U = T[]
+    shared_ptr&lt;U&gt; <a href="#functions">allocate_shared</a>(const A&amp; allocator, size_t size, T&amp;&amp; value);
+
+    template&lt;typename U, typename A&gt; // U = T[N]
+    shared_ptr&lt;U&gt; <a href="#functions">allocate_shared</a>(const A&amp; allocator, T&amp;&amp; value);
+#endif
+#endif
+
+    template&lt;typename U&gt; // U = T[]
+    shared_ptr&lt;U&gt; <a href="#functions">make_shared_noinit</a>(size_t size);
+
+    template&lt;typename U&gt; // U = T[N]
+    shared_ptr&lt;U&gt; <a href="#functions">make_shared_noinit</a>();
+
+    template&lt;typename U, typename A&gt; // U = T[]
+    shared_ptr&lt;U&gt; <a href="#functions">allocate_shared_noinit</a>(const A&amp; allocator, size_t size);
+
+    template&lt;typename U, typename A&gt; // U = T[N]
+    shared_ptr&lt;U&gt; <a href="#functions">allocate_shared_noinit</a>(const A&amp; allocator);
+}</pre>
+    <h2><a name="functions">Free Functions</a></h2>
+    <pre>template&lt;typename U, typename... Args&gt; // U = T[]
+shared_ptr&lt;U&gt; make_shared(size_t size, Args&amp;&amp;... args);
+
+template&lt;typename U, typename A, typename... Args&gt; // U = T[]
+shared_ptr&lt;U&gt; allocate_shared(const A&amp; allocator, size_t size, Args&amp;&amp;... args);</pre> 
+    <blockquote>
+      <p><b>Requires:</b> The expression 
+        <code>new(pointer) T(forward&lt;Args&gt;(args)...)</code>, where 
+        <code>pointer</code> is a <code>void*</code> pointing to storage 
+        suitable to hold an object of type <code>T</code>, shall be 
+        well-formed. <code>A</code> shall be an <em>Allocator</em>, as 
+        described in section 20.1.5 (<strong>Allocator requirements</strong>) 
+        of the C++ Standard.  The copy constructor and destructor of 
+        <code>A</code> shall not throw.</p>
+      <p><b>Effects:</b> Allocates memory suitable for an array of type 
+        <code>T</code> and size <code>size</code> and constructs an array 
+        of objects in it via the placement new expression 
+        <code>new(pointer) T()</code> or 
+        <code>new(pointer) T(args...)</code>.
+        <code>allocate_shared</code> uses a copy of 
+        <code>allocator</code> to allocate memory.  If an exception is thrown, 
+        has no effect.</p>
+      <p><b>Returns:</b> A <code>shared_ptr</code> instance that stores and 
+        owns the address of the newly constructed array of type <code>T</code> 
+        and size <code>size</code>.</p>
+      <p><b>Postconditions:</b> 
+        <code>get() != 0 &amp;&amp; use_count() == 1</code>.</p>
+      <p><b>Throws:</b> <code>bad_alloc</code>, or an exception thrown from 
+        <code>A::allocate</code> or the constructor of <code>T</code>.</p>
+      <p><b>Notes:</b> This implementation allocates the memory required for 
+        the returned <code>shared_ptr</code> and an array of type 
+        <code>T</code> of size <code>size</code> in a single allocation. This 
+        provides efficiency to equivalent to an intrusive smart array 
+        pointer.</p>
+      <p>The prototypes shown above are used if your compiler supports r-value
+        references and variadic templates. They perfectly forward the 
+        <code>args</code> parameters to the constructors of 
+        <code>T</code> for each array element.</p>
+      <p>Otherwise, you can use the overloads which take only the array size 
+        (and the allocator in case of <code>allocate_shared</code>) and do not 
+        take any constructor arguments. These overloads invoke the default 
+        constructor of <code>T</code> for each array element.</p>
+    </blockquote>
+    <pre>template&lt;typename U, typename... Args&gt; // U = T[N]
+shared_ptr&lt;U&gt; make_shared(Args&amp;&amp;... args);
+
+template&lt;typename U, typename A, typename... Args&gt; // U = T[N]
+shared_ptr&lt;U&gt; allocate_shared(const A&amp; allocator, Args&amp;&amp;... args);</pre>
+    <blockquote>
+      <p><b>Description:</b> These overloads of the utilities above are for a 
+        fixed size array.</p>
+    </blockquote>
+    <pre>template&lt;typename U, typename... Args&gt; // U = T[]
+shared_ptr&lt;U&gt; make_shared(initializer_list&lt;T&gt; list);
+
+template&lt;typename U, typename A, typename... Args&gt; // U = T[]
+shared_ptr&lt;U&gt; allocate_shared(const A&amp; allocator, initializer_list&lt;T&gt; list);</pre>
+    <blockquote>
+      <p><b>Description:</b> These overloads initialize the array elements 
+        from the initializer list.</p>
+    </blockquote>
+    <pre>template&lt;typename U, typename... Args&gt; // U = T[N]
+shared_ptr&lt;U&gt; make_shared(const T (&amp;list)[N]);
+
+template&lt;typename U, typename A, typename... Args&gt; // U = T[N]
+shared_ptr&lt;U&gt; allocate_shared(const A&amp; allocator, const T (&amp;list)[N]);</pre>
+    <blockquote>
+      <p><b>Description:</b> These overloads of the utilities above are for a 
+        fixed size array.</p>
+    </blockquote>
+    <pre>template&lt;typename U, typename... Args&gt; // U = T[][N]
+shared_ptr&lt;U&gt; make_shared(size_t size, const T (&amp;list)[N]);
+
+template&lt;typename U, typename A, typename... Args&gt; // U = T[][N]
+shared_ptr&lt;U&gt; allocate_shared(const A&amp; allocator, size_t size, const T (&amp;list)[N]);</pre>
+    <blockquote>
+      <p><b>Description:</b> These overloads initialize inner array elements 
+        from the initializer list.</p>
+    </blockquote>
+    <pre>template&lt;typename U, typename... Args&gt; // U = T[M][N]
+shared_ptr&lt;U&gt; make_shared(const T (&amp;list)[N]);
+
+template&lt;typename U, typename A, typename... Args&gt; // U = T[M][N]
+shared_ptr&lt;U&gt; allocate_shared(const A&amp; allocator, const T (&amp;list)[N]);</pre>
+    <blockquote>
+      <p><b>Description:</b> These overloads of the utilities above are for a 
+        fixed size array.</p>
+    </blockquote>   
+    <pre>template&lt;typename U&gt; // U = T[]
+shared_ptr&lt;U&gt; make_shared(size_t size, T&amp;&amp; value);
+
+template&lt;typename U, typename A&gt; // U = T[]
+shared_ptr&lt;U&gt; allocate_shared(const A&amp; allocator, size_t size, T&amp;&amp; value);</pre>
+    <blockquote>
+      <p><b>Description:</b> These overloads initialize array elements with  
+        the given value.</p>
+    </blockquote>
+    <pre>template&lt;typename U&gt; // U = T[N]
+shared_ptr&lt;U&gt; make_shared(T&amp;&amp; value);
+
+template&lt;typename U, typename A&gt; // U = T[N]
+shared_ptr&lt;U&gt; allocate_shared(const A&amp; allocator, T&amp;&amp; value);</pre>
+    <blockquote>
+      <p><b>Description:</b> These overloads of the utilities above are for a 
+        fixed size array.</p>
+    </blockquote>
+    <pre>template&lt;typename U&gt; // U = T[]
+shared_ptr&lt;U&gt; make_shared_noinit(size_t size);
+
+template&lt;typename U, typename A&gt; // U = T[]
+shared_ptr&lt;U&gt; allocate_shared_noinit(const A&amp; allocator, size_t size);</pre>
+    <blockquote>
+      <p><b>Description:</b> These overloads do not perform any value 
+        initialization of elements.</p>
+    </blockquote>
+    <pre>template&lt;typename U&gt; // U = T[N]
+shared_ptr&lt;U&gt; make_shared_noinit();
+
+template&lt;typename U, typename A&gt; // U = T[N]
+shared_ptr&lt;U&gt; allocate_shared_noinit(const A&amp; allocator);</pre>
+    <blockquote>
+      <p><b>Description:</b> These overloads of the utilities above are for a 
+        fixed size array.</p>
+    </blockquote>
+    <h2><a name="example">Example</a></h2>
+    <p>An example of each overload of make_shared for arrays:</p>
+    <blockquote>
+    <pre>boost::shared_ptr&lt;int[]&gt; a1 = boost::make_shared&lt;int[]&gt;(size);
+boost::shared_ptr&lt;point[]&gt; a2 = boost::make_shared&lt;point[]&gt;(size, x, y);
+boost::shared_ptr&lt;point[5]&gt; a3 = boost::make_shared&lt;point[5]&gt;(x, y);
+boost::shared_ptr&lt;int[]&gt; a4 = boost::make_shared&lt;int[]&gt;({1, 2, 3});
+boost::shared_ptr&lt;int[3]&gt; a5 = boost::make_shared&lt;int[3]&gt;({1, 2, 3});
+boost::shared_ptr&lt;int[][3]&gt; a6 = boost::make_shared&lt;int[][3]&gt;(size, {1, 2, 3});
+boost::shared_ptr&lt;int[5][3]&gt; a7 = boost::make_shared&lt;int[5][3]&gt;({1, 2, 3});
+boost::shared_ptr&lt;point[]&gt; a8 = boost::make_shared&lt;point[]&gt;(size, {x, y});
+boost::shared_ptr&lt;point[5]&gt; a9 = boost::make_shared&lt;point[5]&gt;({x, y});
+boost::shared_ptr&lt;int[]&gt; a10 = boost::make_shared_noinit&lt;int[]&gt;(size);
+boost::shared_ptr&lt;int[5]&gt; a11 = boost::make_shared_noinit&lt;int[5]&gt;();</pre>
+    </blockquote>
+    <h2><a name="history">History</a></h2>
+    <p>November 2012. Glen Fernandes contributed implementations of 
+      make_shared and allocate_shared for arrays.</p>
+    <hr>
+    <p>$Date: 2012-10-30 10:12:25 -0800 (Tue, 30 Oct 2012) $</p>
+    <p><small>Copyright 2012 Glen Fernandes. Distributed under the Boost 
+      Software License, Version 1.0. See accompanying file 
+      <A href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</A> or copy at 
+      <A href="http://www.boost.org/LICENSE_1_0.txt">
+      http://www.boost.org/LICENSE_1_0.txt</A>.</small></p>
+  </body>
+</html>
--- a/msvcspeed.gif
+++ b/msvcspeed.gif
--- a/Show More
+++ b/Show More