Release 1.41.0

[SVN r57747]

include/boost/detail/atomic_count.hpp

@@ -12,113 +12,10 @@
 //
 //  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: nothing
-//
-//  --a;
-//
-//    Effects: Atomically decrements the value of a
-//    Returns: (long) zero if the new value of a is zero,
-//      unspecified non-zero value otherwise (usually the new value)
-//
-//    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...
-//
+//  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>
-
-#ifndef BOOST_HAS_THREADS
-
-namespace boost
-{
-
-namespace detail
-{
-
-typedef long atomic_count;
-
-}
-
-}
-
-#elif defined(BOOST_AC_USE_PTHREADS)
-
-#  include <boost/detail/atomic_count_pthreads.hpp>
-
-#elif defined( __GNUC__ ) && ( defined( __i386__ ) || defined( __x86_64__ ) )
-
-# include <boost/detail/atomic_count_gcc_x86.hpp>
-
-#elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__)
-
-#  include <boost/detail/atomic_count_win32.hpp>
-
-#elif defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
-
-#  include <boost/detail/atomic_count_sync.hpp>
-
-#elif defined(__GLIBCPP__) || defined(__GLIBCXX__)
-
-#  include <boost/detail/atomic_count_gcc.hpp>
-
-#elif defined(BOOST_HAS_PTHREADS)
-
-#  define BOOST_AC_USE_PTHREADS
-#  include <boost/detail/atomic_count_pthreads.hpp>
-
-#else
-
-// Use #define BOOST_DISABLE_THREADS to avoid the error
-#error Unrecognized threading platform
-
-#endif
+#include <boost/smart_ptr/detail/atomic_count.hpp>
 
 #endif // #ifndef BOOST_DETAIL_ATOMIC_COUNT_HPP_INCLUDED

include/boost/detail/lightweight_mutex.hpp

@@ -12,31 +12,11 @@
 //
 //  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.
+//  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_HAS_THREADS)
-# include <boost/detail/lwm_nop.hpp>
-#elif defined(BOOST_HAS_PTHREADS)
-#  include <boost/detail/lwm_pthreads.hpp>
-#elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__)
-#  include <boost/detail/lwm_win32_cs.hpp>
-#else
-// Use #define BOOST_DISABLE_THREADS to avoid the error
-#  error Unrecognized threading platform
-#endif
+#include <boost/smart_ptr/detail/lightweight_mutex.hpp>
 
 #endif // #ifndef BOOST_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED

include/boost/detail/sp_counted_base.hpp

@@ -1,81 +0,0 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_HPP_INCLUDED
-#define BOOST_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>
-
-#if defined( BOOST_SP_DISABLE_THREADS )
-
-# include <boost/detail/sp_counted_base_nt.hpp>
-
-#elif defined( BOOST_SP_USE_PTHREADS )
-
-# include <boost/detail/sp_counted_base_pt.hpp>
-
-#elif defined( __GNUC__ ) && ( defined( __i386__ ) || defined( __x86_64__ ) )
-
-# include <boost/detail/sp_counted_base_gcc_x86.hpp>
-
-//~ #elif defined( __MWERKS__ ) && ( defined( __i386__ ) || defined( __x86_64__ ) )
-
-//~ # include <boost/detail/sp_counted_base_cw_x86.hpp>
-
-#elif defined( __GNUC__ ) && defined( __ia64__ ) && !defined( __INTEL_COMPILER )
-
-# include <boost/detail/sp_counted_base_gcc_ia64.hpp>
-
-#elif defined(__HP_aCC) && defined(__ia64)
-
-# include <boost/detail/sp_counted_base_acc_ia64.hpp>
-
-#elif defined( __MWERKS__ ) && defined( __POWERPC__ )
-
-# include <boost/detail/sp_counted_base_cw_ppc.hpp>
-
-#elif defined( __GNUC__ ) && ( defined( __powerpc__ ) || defined( __ppc__ ) || defined( __ppc ) )
-
-# include <boost/detail/sp_counted_base_gcc_ppc.hpp>
-
-#elif defined(__GNUC__) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
-
-# include <boost/detail/sp_counted_base_sync.hpp>
-
-#elif defined(__GNUC__) && ( defined( __sparcv8 ) || defined( __sparcv9 ) )
-
-# include <boost/detail/sp_counted_base_gcc_sparc.hpp>
-
-#elif defined( WIN32 ) || defined( _WIN32 ) || defined( __WIN32__ )
-
-# include <boost/detail/sp_counted_base_w32.hpp>
-
-#elif !defined( BOOST_HAS_THREADS )
-
-# include <boost/detail/sp_counted_base_nt.hpp>
-
-#elif defined( BOOST_HAS_PTHREADS )
-
-# include <boost/detail/sp_counted_base_pt.hpp>
-
-#else
-
-// Use #define BOOST_DISABLE_THREADS to avoid the error
-# error Unrecognized threading platform
-
-#endif
-
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_HPP_INCLUDED

include/boost/enable_shared_from_this.hpp

@@ -6,68 +6,13 @@
 //
 //  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)
+//  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/weak_ptr.hpp>
-#include <boost/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()
-    {
-    }
-
-    enable_shared_from_this(enable_shared_from_this const &)
-    {
-    }
-
-    enable_shared_from_this & operator=(enable_shared_from_this const &)
-    {
-        return *this;
-    }
-
-    ~enable_shared_from_this()
-    {
-    }
-
-public:
-
-    shared_ptr<T> shared_from_this()
-    {
-        shared_ptr<T> p(_internal_weak_this);
-        BOOST_ASSERT(p.get() == this);
-        return p;
-    }
-
-    shared_ptr<T const> shared_from_this() const
-    {
-        shared_ptr<T const> p(_internal_weak_this);
-        BOOST_ASSERT(p.get() == this);
-        return p;
-    }
-
-//  Note: No, you don't need to initialize _internal_weak_this
-//
-//  Please read the documentation, not the code
-//
-//  http://www.boost.org/libs/smart_ptr/enable_shared_from_this.html
-
-    typedef T _internal_element_type; // for bcc 5.5.1
-    mutable weak_ptr<_internal_element_type> _internal_weak_this;
-};
-
-} // namespace boost
+#include <boost/smart_ptr/enable_shared_from_this.hpp>
 
 #endif  // #ifndef BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED

include/boost/get_pointer.hpp

@@ -5,7 +5,11 @@
 #ifndef GET_POINTER_DWA20021219_HPP
 # define GET_POINTER_DWA20021219_HPP
 
-# include <memory>
+// 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 { 
 

include/boost/intrusive_ptr.hpp

@@ -6,279 +6,13 @@
 //
 //  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)
+//  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>
-
-#ifdef BOOST_MSVC  // moved here to work around VC++ compiler crash
-# pragma warning(push)
-# pragma warning(disable:4284) // odd return type for operator->
-#endif
-
-#include <boost/assert.hpp>
-#include <boost/detail/workaround.hpp>
-
-#include <functional>           // for std::less
-#include <iosfwd>               // for std::basic_ostream
-
-
-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(): p_(0)
-    {
-    }
-
-    intrusive_ptr(T * p, bool add_ref = true): p_(p)
-    {
-        if(p_ != 0 && add_ref) intrusive_ptr_add_ref(p_);
-    }
-
-#if !defined(BOOST_NO_MEMBER_TEMPLATES) || defined(BOOST_MSVC6_MEMBER_TEMPLATES)
-
-    template<class U> intrusive_ptr(intrusive_ptr<U> const & rhs): p_(rhs.get())
-    {
-        if(p_ != 0) intrusive_ptr_add_ref(p_);
-    }
-
-#endif
-
-    intrusive_ptr(intrusive_ptr const & rhs): p_(rhs.p_)
-    {
-        if(p_ != 0) intrusive_ptr_add_ref(p_);
-    }
-
-    ~intrusive_ptr()
-    {
-        if(p_ != 0) intrusive_ptr_release(p_);
-    }
-
-#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
-
-    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( T * rhs )
-    {
-        this_type( rhs ).swap( *this );
-    }
-
-    T * get() const
-    {
-        return p_;
-    }
-
-    T & operator*() const
-    {
-        BOOST_ASSERT( p_ != 0 );
-        return *p_;
-    }
-
-    T * operator->() const
-    {
-        BOOST_ASSERT( p_ != 0 );
-        return p_;
-    }
-
-#if defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x530)
-
-    operator bool () const
-    {
-        return p_ != 0;
-    }
-
-#elif defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
-    typedef T * (this_type::*unspecified_bool_type)() const;
-    
-    operator unspecified_bool_type() const // never throws
-    {
-        return p_ == 0? 0: &this_type::get;
-    }
-
-#else 
-
-    typedef T * this_type::*unspecified_bool_type;
-
-    operator unspecified_bool_type () const
-    {
-        return p_ == 0? 0: &this_type::p_;
-    }
-
-#endif
-
-    // operator! is a Borland-specific workaround
-    bool operator! () const
-    {
-        return p_ == 0;
-    }
-
-    void swap(intrusive_ptr & rhs)
-    {
-        T * tmp = p_;
-        p_ = rhs.p_;
-        rhs.p_ = tmp;
-    }
-
-private:
-
-    T * p_;
-};
-
-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
-
-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(__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
-
-} // namespace boost
-
-#ifdef BOOST_MSVC
-# pragma warning(pop)
-#endif    
+#include <boost/smart_ptr/intrusive_ptr.hpp>
 
 #endif  // #ifndef BOOST_INTRUSIVE_PTR_HPP_INCLUDED

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

include/boost/memory_order.hpp

@@ -0,0 +1,35 @@
+#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 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 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
+};
+
+} // namespace boost
+
+#endif // #ifndef BOOST_MEMORY_ORDER_HPP_INCLUDED

include/boost/pointer_cast.hpp

@@ -1,6 +1,6 @@
 //////////////////////////////////////////////////////////////////////////////
 //
-// (C) Copyright Ion Gazta<EFBFBD>aga 2005. 
+// (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)

include/boost/pointer_to_other.hpp

@@ -4,7 +4,7 @@
 //
 //  pointer_to_other.hpp
 //
-//  (C) Copyright Ion Gazta<EFBFBD>aga 2005.
+//  (C) Copyright Ion Gaztanaga 2005.
 //  Copyright (c) 2005 Peter Dimov.
 //
 //  Distributed under the Boost Software License, Version 1.0.

include/boost/scoped_array.hpp

@@ -11,125 +11,6 @@
 //  http://www.boost.org/libs/smart_ptr/scoped_array.htm
 //
 
-#include <boost/assert.hpp>
-#include <boost/checked_delete.hpp>
-#include <boost/config.hpp>   // in case ptrdiff_t not in std
-
-#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 * ptr;
-
-    scoped_array(scoped_array const &);
-    scoped_array & operator=(scoped_array const &);
-
-    typedef scoped_array<T> this_type;
-
-public:
-
-    typedef T element_type;
-
-    explicit scoped_array(T * p = 0) : ptr(p) // never throws
-    {
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
-        boost::sp_array_constructor_hook(ptr);
-#endif
-    }
-
-    ~scoped_array() // never throws
-    {
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
-        boost::sp_array_destructor_hook(ptr);
-#endif
-        boost::checked_array_delete(ptr);
-    }
-
-    void reset(T * p = 0) // never throws
-    {
-        BOOST_ASSERT(p == 0 || p != ptr); // catch self-reset errors
-        this_type(p).swap(*this);
-    }
-
-    T & operator[](std::ptrdiff_t i) const // never throws
-    {
-        BOOST_ASSERT(ptr != 0);
-        BOOST_ASSERT(i >= 0);
-        return ptr[i];
-    }
-
-    T * get() const // never throws
-    {
-        return ptr;
-    }
-
-    // implicit conversion to "bool"
-
-#if defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x530)
-
-    operator bool () const
-    {
-        return ptr != 0;
-    }
-
-#elif defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
-    typedef T * (this_type::*unspecified_bool_type)() const;
-    
-    operator unspecified_bool_type() const // never throws
-    {
-        return ptr == 0? 0: &this_type::get;
-    }
-
-#else 
-
-    typedef T * this_type::*unspecified_bool_type;
-
-    operator unspecified_bool_type() const // never throws
-    {
-        return ptr == 0? 0: &this_type::ptr;
-    }
-
-#endif
-
-    bool operator! () const // never throws
-    {
-        return ptr == 0;
-    }
-
-    void swap(scoped_array & b) // never throws
-    {
-        T * tmp = b.ptr;
-        b.ptr = ptr;
-        ptr = tmp;
-    }
-
-};
-
-template<class T> inline void swap(scoped_array<T> & a, scoped_array<T> & b) // never throws
-{
-    a.swap(b);
-}
-
-} // namespace boost
+#include <boost/smart_ptr/scoped_array.hpp>
 
 #endif  // #ifndef BOOST_SCOPED_ARRAY_HPP_INCLUDED

include/boost/scoped_ptr.hpp

@@ -11,147 +11,6 @@
 //  http://www.boost.org/libs/smart_ptr/scoped_ptr.htm
 //
 
-#include <boost/assert.hpp>
-#include <boost/checked_delete.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 * ptr;
-
-    scoped_ptr(scoped_ptr const &);
-    scoped_ptr & operator=(scoped_ptr const &);
-
-    typedef scoped_ptr<T> this_type;
-
-public:
-
-    typedef T element_type;
-
-    explicit scoped_ptr(T * p = 0): ptr(p) // never throws
-    {
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
-        boost::sp_scalar_constructor_hook(ptr);
-#endif
-    }
-
-#ifndef BOOST_NO_AUTO_PTR
-
-    explicit scoped_ptr(std::auto_ptr<T> p): ptr(p.release()) // never throws
-    {
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
-        boost::sp_scalar_constructor_hook(ptr);
-#endif
-    }
-
-#endif
-
-    ~scoped_ptr() // never throws
-    {
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
-        boost::sp_scalar_destructor_hook(ptr);
-#endif
-        boost::checked_delete(ptr);
-    }
-
-    void reset(T * p = 0) // never throws
-    {
-        BOOST_ASSERT(p == 0 || p != ptr); // catch self-reset errors
-        this_type(p).swap(*this);
-    }
-
-    T & operator*() const // never throws
-    {
-        BOOST_ASSERT(ptr != 0);
-        return *ptr;
-    }
-
-    T * operator->() const // never throws
-    {
-        BOOST_ASSERT(ptr != 0);
-        return ptr;
-    }
-
-    T * get() const // never throws
-    {
-        return ptr;
-    }
-
-    // implicit conversion to "bool"
-
-#if defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x530)
-
-    operator bool () const
-    {
-        return ptr != 0;
-    }
-
-#elif defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
-    typedef T * (this_type::*unspecified_bool_type)() const;
-    
-    operator unspecified_bool_type() const // never throws
-    {
-        return ptr == 0? 0: &this_type::get;
-    }
-
-#else 
-    typedef T * this_type::*unspecified_bool_type;
-
-    operator unspecified_bool_type() const // never throws
-    {
-        return ptr == 0? 0: &this_type::ptr;
-    }
-
-#endif
-
-    bool operator! () const // never throws
-    {
-        return ptr == 0;
-    }
-
-    void swap(scoped_ptr & b) // never throws
-    {
-        T * tmp = b.ptr;
-        b.ptr = ptr;
-        ptr = tmp;
-    }
-};
-
-template<class T> inline void swap(scoped_ptr<T> & a, scoped_ptr<T> & b) // never throws
-{
-    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)
-{
-    return p.get();
-}
-
-} // namespace boost
+#include <boost/smart_ptr/scoped_ptr.hpp>
 
 #endif // #ifndef BOOST_SCOPED_PTR_HPP_INCLUDED

include/boost/shared_array.hpp

@@ -14,180 +14,6 @@
 //  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/detail/shared_array_nmt.hpp>
-#else
-
-#include <memory>             // TR1 cyclic inclusion fix
-
-#include <boost/assert.hpp>
-#include <boost/checked_delete.hpp>
-
-#include <boost/detail/shared_count.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;
-
-    explicit shared_array(T * p = 0): px(p), pn(p, deleter())
-    {
-    }
-
-    //
-    // Requirements: D's copy constructor must not throw
-    //
-    // shared_array will release p by calling d(p)
-    //
-
-    template<class D> shared_array(T * p, D d): px(p), pn(p, d)
-    {
-    }
-
-//  generated copy constructor, assignment, destructor are fine
-
-    void reset(T * p = 0)
-    {
-        BOOST_ASSERT(p == 0 || p != px);
-        this_type(p).swap(*this);
-    }
-
-    template <class D> void reset(T * p, D d)
-    {
-        this_type(p, d).swap(*this);
-    }
-
-    T & operator[] (std::ptrdiff_t i) const // never throws
-    {
-        BOOST_ASSERT(px != 0);
-        BOOST_ASSERT(i >= 0);
-        return px[i];
-    }
-    
-    T * get() const // never throws
-    {
-        return px;
-    }
-
-    // implicit conversion to "bool"
-
-#if defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x530)
-
-    operator bool () const
-    {
-        return px != 0;
-    }
-
-#elif defined( _MANAGED )
-
-    static void unspecified_bool( this_type*** )
-    {
-    }
-
-    typedef void (*unspecified_bool_type)( this_type*** );
-
-    operator unspecified_bool_type() const // never throws
-    {
-        return px == 0? 0: unspecified_bool;
-    }
-
-#elif \
-    ( defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, < 0x3200) ) || \
-    ( defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ < 304) )
-
-    typedef T * (this_type::*unspecified_bool_type)() const;
-    
-    operator unspecified_bool_type() const // never throws
-    {
-        return px == 0? 0: &this_type::get;
-    }
-
-#else 
-
-    typedef T * this_type::*unspecified_bool_type;
-
-    operator unspecified_bool_type() const // never throws
-    {
-        return px == 0? 0: &this_type::px;
-    }
-
-#endif
-
-    bool operator! () const // never throws
-    {
-        return px == 0;
-    }
-
-    bool unique() const // never throws
-    {
-        return pn.unique();
-    }
-
-    long use_count() const // never throws
-    {
-        return pn.use_count();
-    }
-
-    void swap(shared_array<T> & other) // never throws
-    {
-        std::swap(px, other.px);
-        pn.swap(other.pn);
-    }
-
-private:
-
-    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) // never throws
-{
-    return a.get() == b.get();
-}
-
-template<class T> inline bool operator!=(shared_array<T> const & a, shared_array<T> const & b) // never throws
-{
-    return a.get() != b.get();
-}
-
-template<class T> inline bool operator<(shared_array<T> const & a, shared_array<T> const & b) // never throws
-{
-    return std::less<T*>()(a.get(), b.get());
-}
-
-template<class T> void swap(shared_array<T> & a, shared_array<T> & b) // never throws
-{
-    a.swap(b);
-}
-
-} // namespace boost
-
-#endif  // #if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+#include <boost/smart_ptr/shared_array.hpp>
 
 #endif  // #ifndef BOOST_SHARED_ARRAY_HPP_INCLUDED

include/boost/shared_ptr.hpp

@@ -5,7 +5,7 @@
 //  shared_ptr.hpp
 //
 //  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
-//  Copyright (c) 2001-2007 Peter Dimov
+//  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
@@ -14,606 +14,6 @@
 //  See http://www.boost.org/libs/smart_ptr/shared_ptr.htm for documentation.
 //
 
-#include <boost/config.hpp>   // for broken compiler workarounds
-
-#if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
-#include <boost/detail/shared_ptr_nmt.hpp>
-#else
-
-#include <memory>               // for std::auto_ptr
-
-#include <boost/assert.hpp>
-#include <boost/checked_delete.hpp>
-#include <boost/throw_exception.hpp>
-#include <boost/detail/shared_count.hpp>
-#include <boost/detail/workaround.hpp>
-
-#include <algorithm>            // for std::swap
-#include <functional>           // for std::less
-#include <typeinfo>             // for std::bad_cast
-#include <iosfwd>               // for std::basic_ostream
-
-#ifdef BOOST_MSVC  // moved here to work around VC++ compiler crash
-# pragma warning(push)
-# pragma warning(disable:4284) // odd return type for operator->
-#endif
-
-namespace boost
-{
-
-template<class T> class weak_ptr;
-template<class T> class enable_shared_from_this;
-
-namespace detail
-{
-
-struct static_cast_tag {};
-struct const_cast_tag {};
-struct dynamic_cast_tag {};
-struct polymorphic_cast_tag {};
-
-template<class T> struct shared_ptr_traits
-{
-    typedef T & reference;
-};
-
-template<> struct shared_ptr_traits<void>
-{
-    typedef void reference;
-};
-
-#if !defined(BOOST_NO_CV_VOID_SPECIALIZATIONS)
-
-template<> struct shared_ptr_traits<void const>
-{
-    typedef void reference;
-};
-
-template<> struct shared_ptr_traits<void volatile>
-{
-    typedef void reference;
-};
-
-template<> struct shared_ptr_traits<void const volatile>
-{
-    typedef void reference;
-};
-
-#endif
-
-// enable_shared_from_this support
-
-template<class T, class Y> void sp_enable_shared_from_this( shared_count const & pn, boost::enable_shared_from_this<T> const * pe, Y const * px )
-{
-    if(pe != 0) pe->_internal_weak_this._internal_assign(const_cast<Y*>(px), pn);
-}
-
-#ifdef _MANAGED
-
-// Avoid C4793, ... causes native code generation
-
-struct sp_any_pointer
-{
-    template<class T> sp_any_pointer( T* ) {}
-};
-
-inline void sp_enable_shared_from_this( shared_count const & /*pn*/, sp_any_pointer, sp_any_pointer )
-{
-}
-
-#else // _MANAGED
-
-#ifdef sgi
-// Turn off: the last argument of the varargs function "sp_enable_shared_from_this" is unnamed
-# pragma set woff 3506
-#endif
-
-inline void sp_enable_shared_from_this( shared_count const & /*pn*/, ... )
-{
-}
-
-#ifdef sgi
-# pragma reset woff 3506
-#endif
-
-#endif // _MANAGED
-
-#if !defined( BOOST_NO_SFINAE ) && !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION ) && !defined( BOOST_NO_AUTO_PTR )
-
-// rvalue auto_ptr support based on a technique by Dave Abrahams
-
-template< class T, class R > struct sp_enable_if_auto_ptr
-{
-};
-
-template< class T, class R > struct sp_enable_if_auto_ptr< std::auto_ptr< T >, R >
-{
-    typedef R type;
-}; 
-
-#endif
-
-} // namespace detail
-
-
-//
-//  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<class T> class shared_ptr
-{
-private:
-
-    // Borland 5.5.1 specific workaround
-    typedef shared_ptr<T> this_type;
-
-public:
-
-    typedef T element_type;
-    typedef T value_type;
-    typedef T * pointer;
-    typedef typename boost::detail::shared_ptr_traits<T>::reference reference;
-
-    shared_ptr(): px(0), pn() // never throws in 1.30+
-    {
-    }
-
-    template<class Y>
-    explicit shared_ptr( Y * p ): px( p ), pn( p ) // Y must be complete
-    {
-        boost::detail::sp_enable_shared_from_this( pn, p, p );
-    }
-
-    //
-    // Requirements: D's copy constructor must not throw
-    //
-    // shared_ptr will release p by calling d(p)
-    //
-
-    template<class Y, class D> shared_ptr(Y * p, D d): px(p), pn(p, d)
-    {
-        boost::detail::sp_enable_shared_from_this( pn, p, p );
-    }
-
-    // As above, but with allocator. A's copy constructor shall not throw.
-
-    template<class Y, class D, class A> shared_ptr( Y * p, D d, A a ): px( p ), pn( p, d, a )
-    {
-        boost::detail::sp_enable_shared_from_this( pn, p, p );
-    }
-
-//  generated copy constructor, assignment, destructor are fine...
-
-//  except that Borland C++ has a bug, and g++ with -Wsynth warns
-#if defined(__BORLANDC__) || defined(__GNUC__)
-
-    shared_ptr & operator=(shared_ptr const & r) // never throws
-    {
-        px = r.px;
-        pn = r.pn; // shared_count::op= doesn't throw
-        return *this;
-    }
-
-#endif
-
-    template<class Y>
-    explicit shared_ptr(weak_ptr<Y> const & r): pn(r.pn) // may throw
-    {
-        // it is now safe to copy r.px, as pn(r.pn) did not throw
-        px = r.px;
-    }
-
-    template<class Y>
-    shared_ptr(shared_ptr<Y> const & r): px(r.px), pn(r.pn) // never throws
-    {
-    }
-
-    // aliasing
-    template< class Y >
-    shared_ptr( shared_ptr<Y> const & r, T * p ): px( p ), pn( r.pn ) // never throws
-    {
-    }
-
-    template<class Y>
-    shared_ptr(shared_ptr<Y> const & r, boost::detail::static_cast_tag): px(static_cast<element_type *>(r.px)), pn(r.pn)
-    {
-    }
-
-    template<class Y>
-    shared_ptr(shared_ptr<Y> const & r, boost::detail::const_cast_tag): px(const_cast<element_type *>(r.px)), pn(r.pn)
-    {
-    }
-
-    template<class Y>
-    shared_ptr(shared_ptr<Y> const & r, boost::detail::dynamic_cast_tag): px(dynamic_cast<element_type *>(r.px)), pn(r.pn)
-    {
-        if(px == 0) // need to allocate new counter -- the cast failed
-        {
-            pn = boost::detail::shared_count();
-        }
-    }
-
-    template<class Y>
-    shared_ptr(shared_ptr<Y> const & r, boost::detail::polymorphic_cast_tag): px(dynamic_cast<element_type *>(r.px)), pn(r.pn)
-    {
-        if(px == 0)
-        {
-            boost::throw_exception(std::bad_cast());
-        }
-    }
-
-#ifndef BOOST_NO_AUTO_PTR
-
-    template<class Y>
-    explicit shared_ptr(std::auto_ptr<Y> & r): px(r.get()), pn()
-    {
-        Y * tmp = r.get();
-        pn = boost::detail::shared_count(r);
-        boost::detail::sp_enable_shared_from_this( pn, tmp, tmp );
-    }
-
-#if !defined( BOOST_NO_SFINAE ) && !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
-
-    template<class Ap>
-    shared_ptr( Ap r, typename boost::detail::sp_enable_if_auto_ptr<Ap, int>::type = 0 ): px( r.get() ), pn()
-    {
-        typename Ap::element_type * tmp = r.get();
-        pn = boost::detail::shared_count( r );
-        boost::detail::sp_enable_shared_from_this( pn, tmp, tmp );
-    }
-
-
-#endif // BOOST_NO_SFINAE, BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-
-#endif // BOOST_NO_AUTO_PTR
-
-#if !defined(BOOST_MSVC) || (BOOST_MSVC >= 1300)
-
-    template<class Y>
-    shared_ptr & operator=(shared_ptr<Y> const & r) // never throws
-    {
-        px = r.px;
-        pn = r.pn; // shared_count::op= doesn't throw
-        return *this;
-    }
-
-#endif
-
-#ifndef BOOST_NO_AUTO_PTR
-
-    template<class Y>
-    shared_ptr & operator=( std::auto_ptr<Y> & r )
-    {
-        this_type(r).swap(*this);
-        return *this;
-    }
-
-#if !defined( BOOST_NO_SFINAE ) && !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
-
-    template<class Ap>
-    typename boost::detail::sp_enable_if_auto_ptr< Ap, shared_ptr & >::type operator=( Ap r )
-    {
-        this_type( r ).swap( *this );
-        return *this;
-    }
-
-
-#endif // BOOST_NO_SFINAE, BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-
-#endif // BOOST_NO_AUTO_PTR
-
-// Move support
-
-#if defined( BOOST_HAS_RVALUE_REFS )
-
-    shared_ptr( shared_ptr && r ): px( r.px ), pn() // never throws
-    {
-        pn.swap( r.pn );
-        r.px = 0;
-    }
-
-    template<class Y>
-    shared_ptr( shared_ptr<Y> && r ): px( r.px ), pn() // never throws
-    {
-        pn.swap( r.pn );
-        r.px = 0;
-    }
-
-    shared_ptr & operator=( shared_ptr && r ) // never throws
-    {
-        this_type( static_cast< shared_ptr && >( r ) ).swap( *this );
-        return *this;
-    }
-
-    template<class Y>
-    shared_ptr & operator=( shared_ptr<Y> && r ) // never throws
-    {
-        this_type( static_cast< shared_ptr<Y> && >( r ) ).swap( *this );
-        return *this;
-    }
-
-#endif
-
-    void reset() // never throws in 1.30+
-    {
-        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_ptr<Y> const & r, T * p )
-    {
-        this_type( r, p ).swap( *this );
-    }
-
-    reference 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;
-    }
-
-    // implicit conversion to "bool"
-
-#if ( defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, < 0x570) ) || defined(__CINT__)
-
-    operator bool () const
-    {
-        return px != 0;
-    }
-
-#elif defined( _MANAGED )
-
-    static void unspecified_bool( this_type*** )
-    {
-    }
-
-    typedef void (*unspecified_bool_type)( this_type*** );
-
-    operator unspecified_bool_type() const // never throws
-    {
-        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 T * (this_type::*unspecified_bool_type)() const;
-    
-    operator unspecified_bool_type() const // never throws
-    {
-        return px == 0? 0: &this_type::get;
-    }
-
-#else 
-
-    typedef T * this_type::*unspecified_bool_type;
-
-    operator unspecified_bool_type() const // never throws
-    {
-        return px == 0? 0: &this_type::px;
-    }
-
-#endif
-
-    // operator! is redundant, but some compilers need it
-
-    bool operator! () const // never throws
-    {
-        return px == 0;
-    }
-
-    bool unique() const // never throws
-    {
-        return pn.unique();
-    }
-
-    long use_count() const // never throws
-    {
-        return pn.use_count();
-    }
-
-    void swap(shared_ptr<T> & other) // never throws
-    {
-        std::swap(px, other.px);
-        pn.swap(other.pn);
-    }
-
-    template<class Y> bool _internal_less(shared_ptr<Y> const & rhs) const
-    {
-        return pn < rhs.pn;
-    }
-
-    void * _internal_get_deleter( detail::sp_typeinfo const & ti ) const
-    {
-        return pn.get_deleter( ti );
-    }
-
-// 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 shared_ptr;
-    template<class Y> friend class weak_ptr;
-
-
-#endif
-
-    T * px;                     // contained pointer
-    boost::detail::shared_count pn;    // reference counter
-
-};  // shared_ptr
-
-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();
-}
-
-#if __GNUC__ == 2 && __GNUC_MINOR__ <= 96
-
-// Resolve the ambiguity between our op!= and the one in rel_ops
-
-template<class T> inline bool operator!=(shared_ptr<T> const & a, shared_ptr<T> const & b)
-{
-    return a.get() != b.get();
-}
-
-#endif
-
-template<class T, class U> inline bool operator<(shared_ptr<T> const & a, shared_ptr<U> const & b)
-{
-    return a._internal_less(b);
-}
-
-template<class T> inline void swap(shared_ptr<T> & a, shared_ptr<T> & b)
-{
-    a.swap(b);
-}
-
-template<class T, class U> shared_ptr<T> static_pointer_cast(shared_ptr<U> const & r)
-{
-    return shared_ptr<T>(r, boost::detail::static_cast_tag());
-}
-
-template<class T, class U> shared_ptr<T> const_pointer_cast(shared_ptr<U> const & r)
-{
-    return shared_ptr<T>(r, boost::detail::const_cast_tag());
-}
-
-template<class T, class U> shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const & r)
-{
-    return shared_ptr<T>(r, boost::detail::dynamic_cast_tag());
-}
-
-// shared_*_cast names are deprecated. Use *_pointer_cast instead.
-
-template<class T, class U> shared_ptr<T> shared_static_cast(shared_ptr<U> const & r)
-{
-    return shared_ptr<T>(r, boost::detail::static_cast_tag());
-}
-
-template<class T, class U> shared_ptr<T> shared_dynamic_cast(shared_ptr<U> const & r)
-{
-    return shared_ptr<T>(r, boost::detail::dynamic_cast_tag());
-}
-
-template<class T, class U> shared_ptr<T> shared_polymorphic_cast(shared_ptr<U> const & r)
-{
-    return shared_ptr<T>(r, boost::detail::polymorphic_cast_tag());
-}
-
-template<class T, class U> shared_ptr<T> shared_polymorphic_downcast(shared_ptr<U> const & r)
-{
-    BOOST_ASSERT(dynamic_cast<T *>(r.get()) == r.get());
-    return shared_static_cast<T>(r);
-}
-
-// 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();
-}
-
-// operator<<
-
-#if defined(__GNUC__) &&  (__GNUC__ < 3)
-
-template<class Y> std::ostream & operator<< (std::ostream & os, shared_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, shared_ptr<Y> const & p)
-# else
-template<class E, class T, class Y> std::basic_ostream<E, T> & operator<< (std::basic_ostream<E, T> & os, shared_ptr<Y> const & p)
-# endif 
-{
-    os << p.get();
-    return os;
-}
-
-#endif // _STLP_NO_IOSTREAMS
-
-#endif // __GNUC__ < 3
-
-// get_deleter
-
-#if ( defined(__GNUC__) && BOOST_WORKAROUND(__GNUC__, < 3) ) || \
-    ( defined(__EDG_VERSION__) && BOOST_WORKAROUND(__EDG_VERSION__, <= 238) ) || \
-    ( defined(__HP_aCC) && BOOST_WORKAROUND(__HP_aCC, <= 33500) )
-
-// g++ 2.9x doesn't allow static_cast<X const *>(void *)
-// apparently EDG 2.38 and HP aCC A.03.35 also don't accept it
-
-template<class D, class T> D * get_deleter(shared_ptr<T> const & p)
-{
-    void const * q = p._internal_get_deleter(BOOST_SP_TYPEID(D));
-    return const_cast<D *>(static_cast<D const *>(q));
-}
-
-#else
-
-template<class D, class T> D * get_deleter(shared_ptr<T> const & p)
-{
-    return static_cast<D *>(p._internal_get_deleter(BOOST_SP_TYPEID(D)));
-}
-
-#endif
-
-} // namespace boost
-
-#ifdef BOOST_MSVC
-# pragma warning(pop)
-#endif    
-
-#endif  // #if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+#include <boost/smart_ptr/shared_ptr.hpp>
 
 #endif  // #ifndef BOOST_SHARED_PTR_HPP_INCLUDED

include/boost/smart_ptr/bad_weak_ptr.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_BAD_WEAK_PTR_HPP_INCLUDED
-#define BOOST_BAD_WEAK_PTR_HPP_INCLUDED
+#ifndef BOOST_SMART_PTR_BAD_WEAK_PTR_HPP_INCLUDED
+#define BOOST_SMART_PTR_BAD_WEAK_PTR_HPP_INCLUDED
 
 // MS compatible compilers support #pragma once
 
@@ -8,7 +8,7 @@
 #endif
 
 //
-//  detail/bad_weak_ptr.hpp
+//  boost/smart_ptr/bad_weak_ptr.hpp
 //
 //  Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
 //
@@ -56,4 +56,4 @@ public:
 # pragma warn .8026     // Functions with excep. spec. are not expanded inline
 #endif
 
-#endif  // #ifndef BOOST_BAD_WEAK_PTR_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_BAD_WEAK_PTR_HPP_INCLUDED

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

include/boost/smart_ptr/detail/atomic_count_gcc.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_ATOMIC_COUNT_GCC_HPP_INCLUDED
-#define BOOST_DETAIL_ATOMIC_COUNT_GCC_HPP_INCLUDED
+#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
@@ -17,7 +17,11 @@
 //  http://www.boost.org/LICENSE_1_0.txt)
 //
 
-#include <bits/atomicity.h>
+#if __GNUC__ * 100 + __GNUC_MINOR__ >= 402
+# include <ext/atomicity.h> 
+#else 
+# include <bits/atomicity.h>
+#endif
 
 namespace boost
 {
@@ -36,21 +40,21 @@ class atomic_count
 {
 public:
 
-    explicit atomic_count(long v) : value_(v) {}
+    explicit atomic_count( long v ) : value_( v ) {}
 
-    void operator++()
+    long operator++()
     {
-        __atomic_add(&value_, 1);
+        return __exchange_and_add( &value_, +1 ) + 1;
     }
 
     long operator--()
     {
-        return __exchange_and_add(&value_, -1) - 1;
+        return __exchange_and_add( &value_, -1 ) - 1;
     }
 
     operator long() const
     {
-        return __exchange_and_add(&value_, 0);
+        return __exchange_and_add( &value_, 0 );
     }
 
 private:
@@ -65,4 +69,4 @@ private:
 
 } // namespace boost
 
-#endif // #ifndef BOOST_DETAIL_ATOMIC_COUNT_GCC_HPP_INCLUDED
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_GCC_HPP_INCLUDED

include/boost/smart_ptr/detail/atomic_count_gcc_x86.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_ATOMIC_COUNT_GCC_X86_HPP_INCLUDED
-#define BOOST_DETAIL_ATOMIC_COUNT_GCC_X86_HPP_INCLUDED
+#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
@@ -25,16 +25,9 @@ public:
 
     explicit atomic_count( long v ) : value_( static_cast< int >( v ) ) {}
 
-    void operator++()
+    long operator++()
     {
-        __asm__
-        (
-            "lock\n\t"
-            "incl %0":
-            "+m"( value_ ): // output (%0)
-            : // inputs
-            "cc" // clobbers
-        );
+        return atomic_exchange_and_add( &value_, +1 ) + 1;
     }
 
     long operator--()
@@ -81,4 +74,4 @@ private:
 
 } // namespace boost
 
-#endif // #ifndef BOOST_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_GCC_X86_HPP_INCLUDED

include/boost/smart_ptr/detail/atomic_count_pthreads.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_ATOMIC_COUNT_PTHREADS_HPP_INCLUDED
-#define BOOST_DETAIL_ATOMIC_COUNT_PTHREADS_HPP_INCLUDED
+#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
@@ -62,10 +62,10 @@ public:
         pthread_mutex_destroy(&mutex_);
     }
 
-    void operator++()
+    long operator++()
     {
         scoped_lock lock(mutex_);
-        ++value_;
+        return ++value_;
     }
 
     long operator--()
@@ -93,4 +93,4 @@ private:
 
 } // namespace boost
 
-#endif // #ifndef BOOST_DETAIL_ATOMIC_COUNT_PTHREADS_HPP_INCLUDED
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_PTHREADS_HPP_INCLUDED

include/boost/smart_ptr/detail/atomic_count_solaris.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_ATOMIC_COUNT_SOLARIS_HPP_INCLUDED
-#define BOOST_DETAIL_ATOMIC_COUNT_SOLARIS_HPP_INCLUDED
+#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
@@ -56,4 +56,4 @@ private:
 
 } // namespace boost
 
-#endif // #ifndef BOOST_DETAIL_ATOMIC_COUNT_SOLARIS_HPP_INCLUDED
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SOLARIS_HPP_INCLUDED

include/boost/smart_ptr/detail/atomic_count_sync.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED
-#define BOOST_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED
+#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
@@ -15,6 +15,10 @@
 //  http://www.boost.org/LICENSE_1_0.txt)
 //
 
+#if defined( __ia64__ ) && defined( __INTEL_COMPILER )
+# include <ia64intrin.h>
+#endif
+
 namespace boost
 {
 
@@ -27,9 +31,9 @@ public:
 
     explicit atomic_count( long v ) : value_( v ) {}
 
-    void operator++()
+    long operator++()
     {
-        __sync_add_and_fetch( &value_, 1 );
+        return __sync_add_and_fetch( &value_, 1 );
     }
 
     long operator--()
@@ -54,4 +58,4 @@ private:
 
 } // namespace boost
 
-#endif // #ifndef BOOST_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED

include/boost/smart_ptr/detail/atomic_count_win32.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED
-#define BOOST_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED
+#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
 
@@ -60,4 +60,4 @@ private:
 
 } // namespace boost
 
-#endif // #ifndef BOOST_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED

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

include/boost/smart_ptr/detail/lwm_nop.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_LWM_NOP_HPP_INCLUDED
-#define BOOST_DETAIL_LWM_NOP_HPP_INCLUDED
+#ifndef BOOST_SMART_PTR_DETAIL_LWM_NOP_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_LWM_NOP_HPP_INCLUDED
 
 // MS compatible compilers support #pragma once
 
@@ -34,4 +34,4 @@ public:
 
 } // namespace boost
 
-#endif // #ifndef BOOST_DETAIL_LWM_NOP_HPP_INCLUDED
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_NOP_HPP_INCLUDED

include/boost/smart_ptr/detail/lwm_pthreads.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_LWM_PTHREADS_HPP_INCLUDED
-#define BOOST_DETAIL_LWM_PTHREADS_HPP_INCLUDED
+#ifndef BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED
 
 // MS compatible compilers support #pragma once
 
@@ -83,4 +83,4 @@ public:
 
 } // namespace boost
 
-#endif // #ifndef BOOST_DETAIL_LWM_PTHREADS_HPP_INCLUDED
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED

include/boost/smart_ptr/detail/lwm_win32_cs.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
-#define BOOST_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
+#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
 
@@ -29,7 +29,7 @@ namespace detail
 
 #ifndef BOOST_USE_WINDOWS_H
 
-struct CRITICAL_SECTION
+struct critical_section
 {
     struct critical_section_debug * DebugInfo;
     long LockCount;
@@ -43,10 +43,14 @@ struct CRITICAL_SECTION
 #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 *);
+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
 
@@ -54,7 +58,7 @@ class lightweight_mutex
 {
 private:
 
-    CRITICAL_SECTION cs_;
+    critical_section cs_;
 
     lightweight_mutex(lightweight_mutex const &);
     lightweight_mutex & operator=(lightweight_mutex const &);
@@ -101,4 +105,4 @@ public:
 
 } // namespace boost
 
-#endif // #ifndef BOOST_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_WIN32_CS_HPP_INCLUDED

include/boost/smart_ptr/detail/operator_bool.hpp

@@ -0,0 +1,56 @@
+//  This header intentionally has no include guards.
+//
+//  Copyright (c) 2001-2009 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
+
+#if ( defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, < 0x570) ) || defined(__CINT__)
+
+    operator bool () const
+    {
+        return px != 0;
+    }
+
+#elif defined( _MANAGED )
+
+    static void unspecified_bool( this_type*** )
+    {
+    }
+
+    typedef void (*unspecified_bool_type)( this_type*** );
+
+    operator unspecified_bool_type() const // never throws
+    {
+        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 T * (this_type::*unspecified_bool_type)() const;
+
+    operator unspecified_bool_type() const // never throws
+    {
+        return px == 0? 0: &this_type::get;
+    }
+
+#else
+
+    typedef T * this_type::*unspecified_bool_type;
+
+    operator unspecified_bool_type() const // never throws
+    {
+        return px == 0? 0: &this_type::px;
+    }
+
+#endif
+
+    // operator! is redundant, but some compilers need it
+    bool operator! () const // never throws
+    {
+        return px == 0;
+    }

include/boost/smart_ptr/detail/quick_allocator.hpp

@@ -0,0 +1,198 @@
+#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 lightweight_mutex m;
+        return m;
+    }
+
+    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

include/boost/smart_ptr/detail/shared_array_nmt.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED
-#define BOOST_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED
+#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
@@ -17,7 +17,7 @@
 #include <boost/assert.hpp>
 #include <boost/checked_delete.hpp>
 #include <boost/throw_exception.hpp>
-#include <boost/detail/atomic_count.hpp>
+#include <boost/smart_ptr/detail/atomic_count.hpp>
 
 #include <cstddef>          // for std::ptrdiff_t
 #include <algorithm>        // for std::swap
@@ -148,4 +148,4 @@ template<class T> void swap(shared_array<T> & a, shared_array<T> & b)
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED

include/boost/smart_ptr/detail/shared_count.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SHARED_COUNT_HPP_INCLUDED
-#define BOOST_DETAIL_SHARED_COUNT_HPP_INCLUDED
+#ifndef BOOST_SMART_PTR_DETAIL_SHARED_COUNT_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SHARED_COUNT_HPP_INCLUDED
 
 // MS compatible compilers support #pragma once
 
@@ -25,11 +25,15 @@
 #include <boost/config.hpp>
 #include <boost/checked_delete.hpp>
 #include <boost/throw_exception.hpp>
-#include <boost/detail/bad_weak_ptr.hpp>
-#include <boost/detail/sp_counted_base.hpp>
-#include <boost/detail/sp_counted_impl.hpp>
-
-#include <memory>           // std::auto_ptr
+#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
 #include <new>              // std::bad_alloc
 
@@ -46,6 +50,8 @@ int const   weak_count_id = 0x298C38A4;
 
 #endif
 
+struct sp_nothrow_tag {};
+
 class weak_count;
 
 class shared_count
@@ -99,11 +105,18 @@ public:
 #endif
     }
 
-    template<class P, class D> shared_count(P p, D d): pi_(0)
+#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
@@ -215,7 +228,20 @@ public:
         if( pi_ != 0 ) pi_->add_ref_copy();
     }
 
+#if defined( BOOST_HAS_RVALUE_REFS )
+
+    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
     {
@@ -248,6 +274,11 @@ public:
         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_;
@@ -288,7 +319,7 @@ public:
 
     weak_count(shared_count const & r): pi_(r.pi_) // nothrow
 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
-        , id_(shared_count_id)
+        , id_(weak_count_id)
 #endif
     {
         if(pi_ != 0) pi_->weak_add_ref();
@@ -296,12 +327,26 @@ public:
 
     weak_count(weak_count const & r): pi_(r.pi_) // nothrow
 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
-        , id_(shared_count_id)
+        , id_(weak_count_id)
 #endif
     {
         if(pi_ != 0) pi_->weak_add_ref();
     }
 
+// Move support
+
+#if defined( BOOST_HAS_RVALUE_REFS )
+
+    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();
@@ -313,9 +358,13 @@ public:
     weak_count & operator= (shared_count const & r) // nothrow
     {
         sp_counted_base * tmp = r.pi_;
-        if(tmp != 0) tmp->weak_add_ref();
-        if(pi_ != 0) pi_->weak_release();
-        pi_ = tmp;
+
+        if( tmp != pi_ )
+        {
+            if(tmp != 0) tmp->weak_add_ref();
+            if(pi_ != 0) pi_->weak_release();
+            pi_ = tmp;
+        }
 
         return *this;
     }
@@ -323,9 +372,13 @@ public:
     weak_count & operator= (weak_count const & r) // nothrow
     {
         sp_counted_base * tmp = r.pi_;
-        if(tmp != 0) tmp->weak_add_ref();
-        if(pi_ != 0) pi_->weak_release();
-        pi_ = tmp;
+
+        if( tmp != pi_ )
+        {
+            if(tmp != 0) tmp->weak_add_ref();
+            if(pi_ != 0) pi_->weak_release();
+            pi_ = tmp;
+        }
 
         return *this;
     }
@@ -342,6 +395,11 @@ public:
         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_;
@@ -364,6 +422,17 @@ inline shared_count::shared_count( weak_count const & r ): pi_( r.pi_ )
     }
 }
 
+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
@@ -372,4 +441,4 @@ inline shared_count::shared_count( weak_count const & r ): pi_( r.pi_ )
 # pragma warn .8027     // Functions containing try are not expanded inline
 #endif
 
-#endif  // #ifndef BOOST_DETAIL_SHARED_COUNT_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SHARED_COUNT_HPP_INCLUDED

include/boost/smart_ptr/detail/shared_ptr_nmt.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SHARED_PTR_NMT_HPP_INCLUDED
-#define BOOST_DETAIL_SHARED_PTR_NMT_HPP_INCLUDED
+#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
@@ -17,7 +17,7 @@
 #include <boost/assert.hpp>
 #include <boost/checked_delete.hpp>
 #include <boost/throw_exception.hpp>
-#include <boost/detail/atomic_count.hpp>
+#include <boost/smart_ptr/detail/atomic_count.hpp>
 
 #ifndef BOOST_NO_AUTO_PTR
 # include <memory>          // for std::auto_ptr
@@ -179,4 +179,4 @@ template<class T> inline T * get_pointer(shared_ptr<T> const & p)
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SHARED_PTR_NMT_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SHARED_PTR_NMT_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_convertible.hpp

@@ -0,0 +1,76 @@
+#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__ <= 0x610 )
+# 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) };
+};
+
+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

include/boost/smart_ptr/detail/sp_counted_base.hpp

@@ -0,0 +1,70 @@
+#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( __GNUC__ ) && ( defined( __i386__ ) || defined( __x86_64__ ) )
+# include <boost/smart_ptr/detail/sp_counted_base_gcc_x86.hpp>
+
+#elif defined( __GNUC__ ) && defined( __ia64__ ) && !defined( __INTEL_COMPILER )
+# include <boost/smart_ptr/detail/sp_counted_base_gcc_ia64.hpp>
+
+#elif defined(__HP_aCC) && defined(__ia64)
+# include <boost/smart_ptr/detail/sp_counted_base_acc_ia64.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 ) )
+# include <boost/smart_ptr/detail/sp_counted_base_gcc_ppc.hpp>
+
+#elif defined( __GNUC__ ) && ( defined( __mips__ ) || defined( _mips ) )
+# 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( 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

include/boost/smart_ptr/detail/sp_counted_base_acc_ia64.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_ACC_IA64_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_BASE_ACC_IA64_HPP_INCLUDED
+#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
@@ -15,7 +15,7 @@
 //  Lock-free algorithm by Alexander Terekhov
 //
 
-#include "sp_typeinfo.hpp"
+#include <boost/detail/sp_typeinfo.hpp>
 #include <machine/sys/inline.h>
 
 namespace boost
@@ -147,4 +147,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_ACC_IA64_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_ACC_IA64_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_counted_base_cw_ppc.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_CW_PPC_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_BASE_CW_PPC_HPP_INCLUDED
+#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
 
@@ -24,7 +24,7 @@
 //  formulation
 //
 
-#include "sp_typeinfo.hpp"
+#include <boost/detail/sp_typeinfo.hpp>
 
 namespace boost
 {
@@ -167,4 +167,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_CW_PPC_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_CW_PPC_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_counted_base_cw_x86.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_CW_X86_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_BASE_CW_X86_HPP_INCLUDED
+#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
 
@@ -25,7 +25,7 @@
 //  formulation
 //
 
-#include "sp_typeinfo.hpp"
+#include <boost/detail/sp_typeinfo.hpp>
 
 namespace boost
 {
@@ -155,4 +155,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_GCC_X86_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_CW_X86_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_counted_base_gcc_ia64.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_GCC_IA64_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_BASE_GCC_IA64_HPP_INCLUDED
+#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
@@ -16,7 +16,7 @@
 //  Lock-free algorithm by Alexander Terekhov
 //
 
-#include "sp_typeinfo.hpp"
+#include <boost/detail/sp_typeinfo.hpp>
 
 namespace boost
 {
@@ -154,4 +154,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_GCC_IA64_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_IA64_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_counted_base_gcc_mips.hpp

@@ -0,0 +1,172 @@
+#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"
+        "ll %0, %1\n\t"
+        "addiu %0, 1\n\t"
+        "sc %0, %1\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"
+        "ll %1, %2\n\t"
+        "addiu %0, %1, -1\n\t"
+        "sc %0, %2\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"
+        "ll %0, %2\n\t"
+        "beqz %0, 1f\n\t"
+        "addiu %1, %0, 1\n\t"
+        "sc %1, %2\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;
+
+    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

include/boost/smart_ptr/detail/sp_counted_base_gcc_ppc.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_GCC_PPC_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_BASE_GCC_PPC_HPP_INCLUDED
+#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
 
@@ -24,7 +24,7 @@
 //  formulation
 //
 
-#include "sp_typeinfo.hpp"
+#include <boost/detail/sp_typeinfo.hpp>
 
 namespace boost
 {
@@ -178,4 +178,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_GCC_PPC_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_PPC_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_counted_base_gcc_sparc.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_GCC_SPARC_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_BASE_GCC_SPARC_HPP_INCLUDED
+#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
 
@@ -19,7 +19,7 @@
 //
 //  Thanks to Michael van der Westhuizen
 
-#include "sp_typeinfo.hpp"
+#include <boost/detail/sp_typeinfo.hpp>
 #include <inttypes.h> // int32_t
 
 namespace boost
@@ -163,4 +163,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_GCC_SPARC_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_SPARC_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_counted_base_gcc_x86.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_GCC_X86_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_BASE_GCC_X86_HPP_INCLUDED
+#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
 
@@ -24,7 +24,7 @@
 //  formulation
 //
 
-#include "sp_typeinfo.hpp"
+#include <boost/detail/sp_typeinfo.hpp>
 
 namespace boost
 {
@@ -170,4 +170,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_GCC_X86_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_GCC_X86_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_counted_base_nt.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_NT_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_BASE_NT_HPP_INCLUDED
+#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
 
@@ -18,7 +18,7 @@
 // http://www.boost.org/LICENSE_1_0.txt)
 //
 
-#include "sp_typeinfo.hpp"
+#include <boost/detail/sp_typeinfo.hpp>
 
 namespace boost
 {
@@ -104,4 +104,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_NT_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_NT_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_counted_base_pt.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED
+#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
 
@@ -18,7 +18,7 @@
 // http://www.boost.org/LICENSE_1_0.txt)
 //
 
-#include "sp_typeinfo.hpp"
+#include <boost/detail/sp_typeinfo.hpp>
 #include <pthread.h>
 
 namespace boost
@@ -132,4 +132,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_counted_base_solaris.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_SOLARIS_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_BASE_SOLARIS_HPP_INCLUDED
+#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
@@ -20,7 +20,7 @@
 //  formulation
 //
 
-#include "sp_typeinfo.hpp"
+#include <boost/detail/sp_typeinfo.hpp>
 #include <atomic.h>
 
 namespace boost
@@ -110,4 +110,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_SOLARIS_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SOLARIS_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_counted_base_spin.hpp

@@ -0,0 +1,131 @@
+#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;
+
+    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

include/boost/smart_ptr/detail/sp_counted_base_sync.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_SYNC_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_BASE_SYNC_HPP_INCLUDED
+#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
 
@@ -15,9 +15,13 @@
 //  See accompanying file LICENSE_1_0.txt or copy at
 //  http://www.boost.org/LICENSE_1_0.txt
 
-#include "sp_typeinfo.hpp"
+#include <boost/detail/sp_typeinfo.hpp>
 #include <limits.h>
 
+#if defined( __ia64__ ) && defined( __INTEL_COMPILER )
+# include <ia64intrin.h>
+#endif
+
 namespace boost
 {
 
@@ -148,4 +152,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_SYNC_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SYNC_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_counted_base_w32.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_BASE_W32_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_BASE_W32_HPP_INCLUDED
+#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
 
@@ -26,7 +26,7 @@
 
 #include <boost/detail/interlocked.hpp>
 #include <boost/detail/workaround.hpp>
-#include "sp_typeinfo.hpp"
+#include <boost/detail/sp_typeinfo.hpp>
 
 namespace boost
 {
@@ -127,4 +127,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_BASE_W32_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_W32_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_counted_impl.hpp

@@ -1,5 +1,5 @@
-#ifndef BOOST_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED
-#define BOOST_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED
+#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
 
@@ -25,10 +25,10 @@
 #endif
 
 #include <boost/checked_delete.hpp>
-#include <boost/detail/sp_counted_base.hpp>
+#include <boost/smart_ptr/detail/sp_counted_base.hpp>
 
 #if defined(BOOST_SP_USE_QUICK_ALLOCATOR)
-#include <boost/detail/quick_allocator.hpp>
+#include <boost/smart_ptr/detail/quick_allocator.hpp>
 #endif
 
 #if defined(BOOST_SP_USE_STD_ALLOCATOR)
@@ -228,4 +228,4 @@ public:
 
 } // namespace boost
 
-#endif  // #ifndef BOOST_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED
+#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED

include/boost/smart_ptr/detail/sp_has_sync.hpp

@@ -0,0 +1,49 @@
+#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.
+//
+
+#if 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( __sparc__ )
+#undef BOOST_SP_HAS_SYNC
+#endif
+
+#if defined( __INTEL_COMPILER ) && !defined( __ia64__ )
+#undef BOOST_SP_HAS_SYNC
+#endif
+
+#endif // __GNUC__ * 100 + __GNUC_MINOR__ >= 401
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_HAS_SYNC_HPP_INCLUDED

include/boost/smart_ptr/detail/spinlock.hpp

@@ -0,0 +1,53 @@
+#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(__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

include/boost/smart_ptr/detail/spinlock_gcc_arm.hpp

@@ -0,0 +1,85 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED
+
+//
+//  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>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class spinlock
+{
+public:
+
+    int v_;
+
+public:
+
+    bool try_lock()
+    {
+        int r;
+
+        __asm__ __volatile__(
+            "swp %0, %1, [%2]":
+            "=&r"( r ): // outputs
+            "r"( 1 ), "r"( &v_ ): // inputs
+            "memory", "cc" );
+
+        return r == 0;
+    }
+
+    void lock()
+    {
+        for( unsigned k = 0; !try_lock(); ++k )
+        {
+            boost::detail::yield( k );
+        }
+    }
+
+    void unlock()
+    {
+        __asm__ __volatile__( "" ::: "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}
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED

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

include/boost/smart_ptr/detail/spinlock_pool.hpp

@@ -0,0 +1,87 @@
+#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 )
+    {
+        std::size_t i = reinterpret_cast< std::size_t >( pv ) % 41;
+        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

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

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

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

include/boost/smart_ptr/detail/yield_k.hpp

@@ -0,0 +1,149 @@
+#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();
+#pragma intrinsic( _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 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

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()
+    {
+    }
+
+    enable_shared_from_this(enable_shared_from_this const &)
+    {
+    }
+
+    enable_shared_from_this & operator=(enable_shared_from_this const &)
+    {
+        return *this;
+    }
+
+    ~enable_shared_from_this()
+    {
+    }
+
+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

include/boost/smart_ptr/enable_shared_from_this2.hpp

@@ -0,0 +1,132 @@
+#ifndef BOOST_ENABLE_SHARED_FROM_THIS2_HPP_INCLUDED
+#define BOOST_ENABLE_SHARED_FROM_THIS2_HPP_INCLUDED
+
+//
+//  enable_shared_from_this2.hpp
+//
+//  Copyright 2002, 2009 Peter Dimov
+//  Copyright 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
+//
+
+#include <boost/config.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/assert.hpp>
+#include <boost/detail/workaround.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class esft2_deleter_wrapper
+{
+private:
+
+    shared_ptr<void> deleter_;
+
+public:
+
+    esft2_deleter_wrapper()
+    {
+    }
+
+    template< class T > void set_deleter( shared_ptr<T> const & deleter )
+    {
+        deleter_ = deleter;
+    }
+
+    template< class T> void operator()( T* )
+    {
+        BOOST_ASSERT( deleter_.use_count() <= 1 );
+        deleter_.reset();
+    }
+};
+
+} // namespace detail
+
+template< class T > class enable_shared_from_this2
+{
+protected:
+
+    enable_shared_from_this2()
+    {
+    }
+
+    enable_shared_from_this2( enable_shared_from_this2 const & )
+    {
+    }
+
+    enable_shared_from_this2 & operator=( enable_shared_from_this2 const & )
+    {
+        return *this;
+    }
+
+    ~enable_shared_from_this2()
+    {
+        BOOST_ASSERT( shared_this_.use_count() <= 1 ); // make sure no dangling shared_ptr objects exist
+    }
+
+private:
+
+    mutable weak_ptr<T> weak_this_;
+    mutable shared_ptr<T> shared_this_;
+
+public:
+
+    shared_ptr<T> shared_from_this()
+    {
+        init_weak_once();
+        return shared_ptr<T>( weak_this_ );
+    }
+
+    shared_ptr<T const> shared_from_this() const
+    {
+        init_weak_once();
+        return shared_ptr<T>( weak_this_ );
+    }
+
+private:
+
+    void init_weak_once() const
+    {
+        if( weak_this_._empty() )
+        {
+            shared_this_.reset( static_cast< T* >( 0 ), detail::esft2_deleter_wrapper() );
+            weak_this_ = shared_this_;
+        }
+    }
+
+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> * ppx, Y * py ) const
+    {
+        BOOST_ASSERT( ppx != 0 );
+
+        if( weak_this_.use_count() == 0 )
+        {
+            weak_this_ = shared_ptr<T>( *ppx, py );
+        }
+        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();
+        }
+    }
+};
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_ENABLE_SHARED_FROM_THIS2_HPP_INCLUDED

include/boost/smart_ptr/intrusive_ptr.hpp

@@ -0,0 +1,299 @@
+#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>
+
+#ifdef BOOST_MSVC  // moved here to work around VC++ compiler crash
+# pragma warning(push)
+# pragma warning(disable:4284) // odd return type for operator->
+#endif
+
+#include <boost/assert.hpp>
+#include <boost/detail/workaround.hpp>
+#include <boost/smart_ptr/detail/sp_convertible.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(): 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 detail::sp_enable_if_convertible<U,T>::type = 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_HAS_RVALUE_REFS )
+
+    intrusive_ptr(intrusive_ptr && rhs): px( rhs.px )
+    {
+        rhs.px = 0;
+    }
+
+    intrusive_ptr & operator=(intrusive_ptr && rhs)
+    {
+        this_type(std::move(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()
+    {
+        this_type().swap( *this );
+    }
+
+    void reset( T * rhs )
+    {
+        this_type( rhs ).swap( *this );
+    }
+
+    T * get() const
+    {
+        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)
+    {
+        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
+
+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)
+
+} // namespace boost
+
+#ifdef BOOST_MSVC
+# pragma warning(pop)
+#endif    
+
+#endif  // #ifndef BOOST_SMART_PTR_INTRUSIVE_PTR_HPP_INCLUDED

include/boost/smart_ptr/make_shared.hpp

@@ -0,0 +1,504 @@
+#ifndef BOOST_SMART_PTR_MAKE_SHARED_HPP_INCLUDED
+#define BOOST_SMART_PTR_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/config.hpp>
+#include <boost/smart_ptr/shared_ptr.hpp>
+#include <boost/type_traits/type_with_alignment.hpp>
+#include <boost/type_traits/alignment_of.hpp>
+#include <cstddef>
+#include <new>
+
+namespace boost
+{
+
+namespace detail
+{
+
+template< std::size_t N, std::size_t A > struct sp_aligned_storage
+{
+    union type
+    {
+        char data_[ N ];
+        typename boost::type_with_alignment< A >::type align_;
+    };
+};
+
+template< class T > class sp_ms_deleter
+{
+private:
+
+    typedef typename sp_aligned_storage< sizeof( T ), ::boost::alignment_of< T >::value >::type storage_type;
+
+    bool initialized_;
+    storage_type storage_;
+
+private:
+
+    void destroy()
+    {
+        if( initialized_ )
+        {
+            reinterpret_cast< T* >( storage_.data_ )->~T();
+            initialized_ = false;
+        }
+    }
+
+public:
+
+    sp_ms_deleter(): initialized_( false )
+    {
+    }
+
+    // optimization: do not copy storage_
+    sp_ms_deleter( sp_ms_deleter const & ): initialized_( false )
+    {
+    }
+
+    ~sp_ms_deleter()
+    {
+        destroy();
+    }
+
+    void operator()( T * )
+    {
+        destroy();
+    }
+
+    void * address()
+    {
+        return storage_.data_;
+    }
+
+    void set_initialized()
+    {
+        initialized_ = true;
+    }
+};
+
+template< class T > T forward( T t )
+{
+    return t;
+}
+
+} // namespace detail
+
+// Zero-argument versions
+//
+// Used even when variadic templates are available because of the new T() vs new T issue
+
+template< class T > boost::shared_ptr< T > make_shared()
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T();
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A > boost::shared_ptr< T > allocate_shared( A const & a )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T();
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+#if defined( BOOST_HAS_VARIADIC_TMPL ) && defined( BOOST_HAS_RVALUE_REFS )
+
+// Variadic templates, rvalue reference
+
+template< class T, class... Args > boost::shared_ptr< T > make_shared( Args && ... args )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( detail::forward<Args>( args )... );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A, class... Args > boost::shared_ptr< T > allocate_shared( A const & a, Args && ... args )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( detail::forward<Args>( args )... );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+#else
+
+// C++03 version
+
+template< class T, class A1 >
+boost::shared_ptr< T > make_shared( A1 const & a1 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A, class A1 >
+boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A1, class A2 >
+boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A, class A1, class A2 >
+boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A1, class A2, class A3 >
+boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A, class A1, class A2, class A3 >
+boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A1, class A2, class A3, class A4 >
+boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3, a4 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A, class A1, class A2, class A3, class A4 >
+boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3, a4 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A1, class A2, class A3, class A4, class A5 >
+boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3, a4, a5 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A, class A1, class A2, class A3, class A4, class A5 >
+boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3, a4, a5 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A1, class A2, class A3, class A4, class A5, class A6 >
+boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3, a4, a5, a6 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6 >
+boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3, a4, a5, a6 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7 >
+boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3, a4, a5, a6, a7 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6, class A7 >
+boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3, a4, a5, a6, a7 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8 >
+boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7, A8 const & a8 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8 >
+boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7, A8 const & a8 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9 >
+boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7, A8 const & a8, A9 const & a9 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8, a9 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9 >
+boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7, A8 const & a8, A9 const & a9 )
+{
+    boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
+
+    detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
+
+    void * pv = pd->address();
+
+    ::new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8, a9 );
+    pd->set_initialized();
+
+    T * pt2 = static_cast< T* >( pv );
+
+    boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
+    return boost::shared_ptr< T >( pt, pt2 );
+}
+
+#endif
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_MAKE_SHARED_HPP_INCLUDED

include/boost/smart_ptr/scoped_array.hpp

@@ -0,0 +1,107 @@
+#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/assert.hpp>
+#include <boost/checked_delete.hpp>
+#include <boost/config.hpp>   // in case ptrdiff_t not in std
+
+#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 ) : px( p ) // never throws
+    {
+#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
+    {
+        BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors
+        this_type(p).swap(*this);
+    }
+
+    T & operator[](std::ptrdiff_t i) const // never throws
+    {
+        BOOST_ASSERT( px != 0 );
+        BOOST_ASSERT( i >= 0 );
+        return px[i];
+    }
+
+    T * get() const // never throws
+    {
+        return px;
+    }
+
+// implicit conversion to "bool"
+#include <boost/smart_ptr/detail/operator_bool.hpp>
+
+    void swap(scoped_array & b) // never throws
+    {
+        T * tmp = b.px;
+        b.px = px;
+        px = tmp;
+    }
+};
+
+template<class T> inline void swap(scoped_array<T> & a, scoped_array<T> & b) // never throws
+{
+    a.swap(b);
+}
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED

include/boost/smart_ptr/scoped_ptr.hpp

@@ -0,0 +1,131 @@
+#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/assert.hpp>
+#include <boost/checked_delete.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 ): px( p.release() ) // never throws
+    {
+#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 // never throws
+    {
+        return px;
+    }
+
+// implicit conversion to "bool"
+#include <boost/smart_ptr/detail/operator_bool.hpp>
+
+    void swap(scoped_ptr & b) // never throws
+    {
+        T * tmp = b.px;
+        b.px = px;
+        px = tmp;
+    }
+};
+
+template<class T> inline void swap(scoped_ptr<T> & a, scoped_ptr<T> & b) // never throws
+{
+    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)
+{
+    return p.get();
+}
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_SCOPED_PTR_HPP_INCLUDED

include/boost/smart_ptr/shared_array.hpp

@@ -0,0 +1,147 @@
+#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 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/detail/shared_count.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;
+
+    explicit shared_array(T * p = 0): px(p), pn(p, deleter())
+    {
+    }
+
+    //
+    // Requirements: D's copy constructor must not throw
+    //
+    // shared_array will release p by calling d(p)
+    //
+
+    template<class D> shared_array(T * p, D d): px(p), pn(p, d)
+    {
+    }
+
+//  generated copy constructor, assignment, destructor are fine
+
+    void reset(T * p = 0)
+    {
+        BOOST_ASSERT(p == 0 || p != px);
+        this_type(p).swap(*this);
+    }
+
+    template <class D> void reset(T * p, D d)
+    {
+        this_type(p, d).swap(*this);
+    }
+
+    T & operator[] (std::ptrdiff_t i) const // never throws
+    {
+        BOOST_ASSERT(px != 0);
+        BOOST_ASSERT(i >= 0);
+        return px[i];
+    }
+    
+    T * get() const // never throws
+    {
+        return px;
+    }
+
+// implicit conversion to "bool"
+#include <boost/smart_ptr/detail/operator_bool.hpp>
+
+    bool unique() const // never throws
+    {
+        return pn.unique();
+    }
+
+    long use_count() const // never throws
+    {
+        return pn.use_count();
+    }
+
+    void swap(shared_array<T> & other) // never throws
+    {
+        std::swap(px, other.px);
+        pn.swap(other.pn);
+    }
+
+private:
+
+    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) // never throws
+{
+    return a.get() == b.get();
+}
+
+template<class T> inline bool operator!=(shared_array<T> const & a, shared_array<T> const & b) // never throws
+{
+    return a.get() != b.get();
+}
+
+template<class T> inline bool operator<(shared_array<T> const & a, shared_array<T> const & b) // never throws
+{
+    return std::less<T*>()(a.get(), b.get());
+}
+
+template<class T> void swap(shared_array<T> & a, shared_array<T> & b) // never throws
+{
+    a.swap(b);
+}
+
+} // namespace boost
+
+#endif  // #if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+
+#endif  // #ifndef BOOST_SMART_PTR_SHARED_ARRAY_HPP_INCLUDED

include/boost/smart_ptr/shared_ptr.hpp

@@ -0,0 +1,701 @@
+#ifndef BOOST_SMART_PTR_SHARED_PTR_HPP_INCLUDED
+#define BOOST_SMART_PTR_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/config.hpp>   // for broken compiler workarounds
+
+#if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+#include <boost/smart_ptr/detail/shared_ptr_nmt.hpp>
+#else
+
+// 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 <boost/assert.hpp>
+#include <boost/checked_delete.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/smart_ptr/detail/shared_count.hpp>
+#include <boost/detail/workaround.hpp>
+#include <boost/smart_ptr/detail/sp_convertible.hpp>
+
+#if !defined(BOOST_SP_NO_ATOMIC_ACCESS)
+#include <boost/smart_ptr/detail/spinlock_pool.hpp>
+#include <boost/memory_order.hpp>
+#endif
+
+#include <algorithm>            // for std::swap
+#include <functional>           // for std::less
+#include <typeinfo>             // for std::bad_cast
+
+#if !defined(BOOST_NO_IOSTREAM)
+#if !defined(BOOST_NO_IOSFWD)
+#include <iosfwd>               // for std::basic_ostream
+#else
+#include <ostream>
+#endif
+#endif
+
+#ifdef BOOST_MSVC  // moved here to work around VC++ compiler crash
+# pragma warning(push)
+# pragma warning(disable:4284) // odd return type for operator->
+#endif
+
+namespace boost
+{
+
+template<class T> class shared_ptr;
+template<class T> class weak_ptr;
+template<class T> class enable_shared_from_this;
+template<class T> class enable_shared_from_this2;
+
+namespace detail
+{
+
+struct static_cast_tag {};
+struct const_cast_tag {};
+struct dynamic_cast_tag {};
+struct polymorphic_cast_tag {};
+
+template<class T> struct shared_ptr_traits
+{
+    typedef T & reference;
+};
+
+template<> struct shared_ptr_traits<void>
+{
+    typedef void reference;
+};
+
+#if !defined(BOOST_NO_CV_VOID_SPECIALIZATIONS)
+
+template<> struct shared_ptr_traits<void const>
+{
+    typedef void reference;
+};
+
+template<> struct shared_ptr_traits<void volatile>
+{
+    typedef void reference;
+};
+
+template<> struct shared_ptr_traits<void const volatile>
+{
+    typedef void reference;
+};
+
+#endif
+
+// enable_shared_from_this support
+
+template< class X, class Y, class T > inline void sp_enable_shared_from_this( boost::shared_ptr<X> const * ppx, Y const * py, boost::enable_shared_from_this< T > const * pe )
+{
+    if( pe != 0 )
+    {
+        pe->_internal_accept_owner( ppx, const_cast< Y* >( py ) );
+    }
+}
+
+template< class X, class Y, class T > inline void sp_enable_shared_from_this( boost::shared_ptr<X> * ppx, Y const * py, boost::enable_shared_from_this2< T > const * pe )
+{
+    if( pe != 0 )
+    {
+        pe->_internal_accept_owner( ppx, const_cast< Y* >( py ) );
+    }
+}
+
+#ifdef _MANAGED
+
+// Avoid C4793, ... causes native code generation
+
+struct sp_any_pointer
+{
+    template<class T> sp_any_pointer( T* ) {}
+};
+
+inline void sp_enable_shared_from_this( sp_any_pointer, sp_any_pointer, sp_any_pointer )
+{
+}
+
+#else // _MANAGED
+
+inline void sp_enable_shared_from_this( ... )
+{
+}
+
+#endif // _MANAGED
+
+#if !defined( BOOST_NO_SFINAE ) && !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION ) && !defined( BOOST_NO_AUTO_PTR )
+
+// rvalue auto_ptr support based on a technique by Dave Abrahams
+
+template< class T, class R > struct sp_enable_if_auto_ptr
+{
+};
+
+template< class T, class R > struct sp_enable_if_auto_ptr< std::auto_ptr< T >, R >
+{
+    typedef R type;
+}; 
+
+#endif
+
+} // namespace detail
+
+
+//
+//  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<class T> class shared_ptr
+{
+private:
+
+    // Borland 5.5.1 specific workaround
+    typedef shared_ptr<T> this_type;
+
+public:
+
+    typedef T element_type;
+    typedef T value_type;
+    typedef T * pointer;
+    typedef typename boost::detail::shared_ptr_traits<T>::reference reference;
+
+    shared_ptr(): px(0), pn() // never throws in 1.30+
+    {
+    }
+
+    template<class Y>
+    explicit shared_ptr( Y * p ): px( p ), pn( p ) // Y must be complete
+    {
+        boost::detail::sp_enable_shared_from_this( this, p, p );
+    }
+
+    //
+    // Requirements: D's copy constructor must not throw
+    //
+    // shared_ptr will release p by calling d(p)
+    //
+
+    template<class Y, class D> shared_ptr(Y * p, D d): px(p), pn(p, d)
+    {
+        boost::detail::sp_enable_shared_from_this( this, p, p );
+    }
+
+    // As above, but with allocator. A's copy constructor shall not throw.
+
+    template<class Y, class D, class A> shared_ptr( Y * p, D d, A a ): px( p ), pn( p, d, a )
+    {
+        boost::detail::sp_enable_shared_from_this( this, p, p );
+    }
+
+//  generated copy constructor, destructor are fine
+
+    template<class Y>
+    explicit shared_ptr(weak_ptr<Y> const & r): pn(r.pn) // may throw
+    {
+        // it is now safe to copy r.px, as pn(r.pn) did not throw
+        px = r.px;
+    }
+
+    template<class Y>
+    shared_ptr( weak_ptr<Y> const & r, boost::detail::sp_nothrow_tag ): px( 0 ), pn( r.pn, boost::detail::sp_nothrow_tag() ) // never throws
+    {
+        if( !pn.empty() )
+        {
+            px = r.px;
+        }
+    }
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    shared_ptr( shared_ptr<Y> const & r, typename detail::sp_enable_if_convertible<Y,T>::type = detail::sp_empty() )
+
+#else
+
+    shared_ptr( shared_ptr<Y> const & r )
+
+#endif
+    : px( r.px ), pn( r.pn ) // never throws
+    {
+    }
+
+    // aliasing
+    template< class Y >
+    shared_ptr( shared_ptr<Y> const & r, T * p ): px( p ), pn( r.pn ) // never throws
+    {
+    }
+
+    template<class Y>
+    shared_ptr(shared_ptr<Y> const & r, boost::detail::static_cast_tag): px(static_cast<element_type *>(r.px)), pn(r.pn)
+    {
+    }
+
+    template<class Y>
+    shared_ptr(shared_ptr<Y> const & r, boost::detail::const_cast_tag): px(const_cast<element_type *>(r.px)), pn(r.pn)
+    {
+    }
+
+    template<class Y>
+    shared_ptr(shared_ptr<Y> const & r, boost::detail::dynamic_cast_tag): px(dynamic_cast<element_type *>(r.px)), pn(r.pn)
+    {
+        if(px == 0) // need to allocate new counter -- the cast failed
+        {
+            pn = boost::detail::shared_count();
+        }
+    }
+
+    template<class Y>
+    shared_ptr(shared_ptr<Y> const & r, boost::detail::polymorphic_cast_tag): px(dynamic_cast<element_type *>(r.px)), pn(r.pn)
+    {
+        if(px == 0)
+        {
+            boost::throw_exception(std::bad_cast());
+        }
+    }
+
+#ifndef BOOST_NO_AUTO_PTR
+
+    template<class Y>
+    explicit shared_ptr(std::auto_ptr<Y> & r): px(r.get()), pn()
+    {
+        Y * tmp = r.get();
+        pn = boost::detail::shared_count(r);
+        boost::detail::sp_enable_shared_from_this( this, tmp, tmp );
+    }
+
+#if !defined( BOOST_NO_SFINAE ) && !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+    template<class Ap>
+    explicit shared_ptr( Ap r, typename boost::detail::sp_enable_if_auto_ptr<Ap, int>::type = 0 ): px( r.get() ), pn()
+    {
+        typename Ap::element_type * tmp = r.get();
+        pn = boost::detail::shared_count( r );
+        boost::detail::sp_enable_shared_from_this( this, tmp, tmp );
+    }
+
+
+#endif // BOOST_NO_SFINAE, BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+#endif // BOOST_NO_AUTO_PTR
+
+    // assignment
+
+    shared_ptr & operator=( shared_ptr const & r ) // never throws
+    {
+        this_type(r).swap(*this);
+        return *this;
+    }
+
+#if !defined(BOOST_MSVC) || (BOOST_MSVC >= 1400)
+
+    template<class Y>
+    shared_ptr & operator=(shared_ptr<Y> const & r) // never throws
+    {
+        this_type(r).swap(*this);
+        return *this;
+    }
+
+#endif
+
+#ifndef BOOST_NO_AUTO_PTR
+
+    template<class Y>
+    shared_ptr & operator=( std::auto_ptr<Y> & r )
+    {
+        this_type(r).swap(*this);
+        return *this;
+    }
+
+#if !defined( BOOST_NO_SFINAE ) && !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+    template<class Ap>
+    typename boost::detail::sp_enable_if_auto_ptr< Ap, shared_ptr & >::type operator=( Ap r )
+    {
+        this_type( r ).swap( *this );
+        return *this;
+    }
+
+
+#endif // BOOST_NO_SFINAE, BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+#endif // BOOST_NO_AUTO_PTR
+
+// Move support
+
+#if defined( BOOST_HAS_RVALUE_REFS )
+
+    shared_ptr( shared_ptr && r ): px( r.px ), pn() // never throws
+    {
+        pn.swap( r.pn );
+        r.px = 0;
+    }
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    shared_ptr( shared_ptr<Y> && r, typename detail::sp_enable_if_convertible<Y,T>::type = detail::sp_empty() )
+
+#else
+
+    shared_ptr( shared_ptr<Y> && r )
+
+#endif
+    : px( r.px ), pn() // never throws
+    {
+        pn.swap( r.pn );
+        r.px = 0;
+    }
+
+    shared_ptr & operator=( shared_ptr && r ) // never throws
+    {
+        this_type( std::move( r ) ).swap( *this );
+        return *this;
+    }
+
+    template<class Y>
+    shared_ptr & operator=( shared_ptr<Y> && r ) // never throws
+    {
+        this_type( std::move( r ) ).swap( *this );
+        return *this;
+    }
+
+#endif
+
+    void reset() // never throws in 1.30+
+    {
+        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_ptr<Y> const & r, T * p )
+    {
+        this_type( r, p ).swap( *this );
+    }
+
+    reference 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;
+    }
+
+// implicit conversion to "bool"
+#include <boost/smart_ptr/detail/operator_bool.hpp>
+
+    bool unique() const // never throws
+    {
+        return pn.unique();
+    }
+
+    long use_count() const // never throws
+    {
+        return pn.use_count();
+    }
+
+    void swap(shared_ptr<T> & other) // never throws
+    {
+        std::swap(px, other.px);
+        pn.swap(other.pn);
+    }
+
+    template<class Y> bool _internal_less(shared_ptr<Y> const & rhs) const
+    {
+        return pn < rhs.pn;
+    }
+
+    void * _internal_get_deleter( detail::sp_typeinfo const & ti ) const
+    {
+        return pn.get_deleter( ti );
+    }
+
+    bool _internal_equiv( shared_ptr const & r ) const
+    {
+        return px == r.px && pn == r.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 shared_ptr;
+    template<class Y> friend class weak_ptr;
+
+
+#endif
+
+    T * px;                     // contained pointer
+    boost::detail::shared_count pn;    // reference counter
+
+};  // shared_ptr
+
+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();
+}
+
+#if __GNUC__ == 2 && __GNUC_MINOR__ <= 96
+
+// Resolve the ambiguity between our op!= and the one in rel_ops
+
+template<class T> inline bool operator!=(shared_ptr<T> const & a, shared_ptr<T> const & b)
+{
+    return a.get() != b.get();
+}
+
+#endif
+
+template<class T, class U> inline bool operator<(shared_ptr<T> const & a, shared_ptr<U> const & b)
+{
+    return a._internal_less(b);
+}
+
+template<class T> inline void swap(shared_ptr<T> & a, shared_ptr<T> & b)
+{
+    a.swap(b);
+}
+
+template<class T, class U> shared_ptr<T> static_pointer_cast(shared_ptr<U> const & r)
+{
+    return shared_ptr<T>(r, boost::detail::static_cast_tag());
+}
+
+template<class T, class U> shared_ptr<T> const_pointer_cast(shared_ptr<U> const & r)
+{
+    return shared_ptr<T>(r, boost::detail::const_cast_tag());
+}
+
+template<class T, class U> shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const & r)
+{
+    return shared_ptr<T>(r, boost::detail::dynamic_cast_tag());
+}
+
+// shared_*_cast names are deprecated. Use *_pointer_cast instead.
+
+template<class T, class U> shared_ptr<T> shared_static_cast(shared_ptr<U> const & r)
+{
+    return shared_ptr<T>(r, boost::detail::static_cast_tag());
+}
+
+template<class T, class U> shared_ptr<T> shared_dynamic_cast(shared_ptr<U> const & r)
+{
+    return shared_ptr<T>(r, boost::detail::dynamic_cast_tag());
+}
+
+template<class T, class U> shared_ptr<T> shared_polymorphic_cast(shared_ptr<U> const & r)
+{
+    return shared_ptr<T>(r, boost::detail::polymorphic_cast_tag());
+}
+
+template<class T, class U> shared_ptr<T> shared_polymorphic_downcast(shared_ptr<U> const & r)
+{
+    BOOST_ASSERT(dynamic_cast<T *>(r.get()) == r.get());
+    return shared_static_cast<T>(r);
+}
+
+// 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();
+}
+
+// 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, shared_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, shared_ptr<Y> const & p)
+# else
+template<class E, class T, class Y> std::basic_ostream<E, T> & operator<< (std::basic_ostream<E, T> & os, shared_ptr<Y> const & p)
+# endif
+{
+    os << p.get();
+    return os;
+}
+
+#endif // _STLP_NO_IOSTREAMS
+
+#endif // __GNUC__ < 3
+
+#endif // !defined(BOOST_NO_IOSTREAM)
+
+// get_deleter
+
+#if ( defined(__GNUC__) && BOOST_WORKAROUND(__GNUC__, < 3) ) || \
+    ( defined(__EDG_VERSION__) && BOOST_WORKAROUND(__EDG_VERSION__, <= 238) ) || \
+    ( defined(__HP_aCC) && BOOST_WORKAROUND(__HP_aCC, <= 33500) )
+
+// g++ 2.9x doesn't allow static_cast<X const *>(void *)
+// apparently EDG 2.38 and HP aCC A.03.35 also don't accept it
+
+template<class D, class T> D * get_deleter(shared_ptr<T> const & p)
+{
+    void const * q = p._internal_get_deleter(BOOST_SP_TYPEID(D));
+    return const_cast<D *>(static_cast<D const *>(q));
+}
+
+#else
+
+template<class D, class T> D * get_deleter(shared_ptr<T> const & p)
+{
+    return static_cast<D *>(p._internal_get_deleter(BOOST_SP_TYPEID(D)));
+}
+
+#endif
+
+// atomic access
+
+#if !defined(BOOST_SP_NO_ATOMIC_ACCESS)
+
+template<class T> inline bool atomic_is_lock_free( shared_ptr<T> const * /*p*/ )
+{
+    return false;
+}
+
+template<class T> shared_ptr<T> atomic_load( shared_ptr<T> const * p )
+{
+    boost::detail::spinlock_pool<2>::scoped_lock lock( p );
+    return *p;
+}
+
+template<class T> inline shared_ptr<T> atomic_load_explicit( shared_ptr<T> const * p, memory_order /*mo*/ )
+{
+    return atomic_load( p );
+}
+
+template<class T> void atomic_store( shared_ptr<T> * p, shared_ptr<T> r )
+{
+    boost::detail::spinlock_pool<2>::scoped_lock lock( p );
+    p->swap( r );
+}
+
+template<class T> inline void atomic_store_explicit( shared_ptr<T> * p, shared_ptr<T> r, memory_order /*mo*/ )
+{
+    atomic_store( p, r ); // std::move( r )
+}
+
+template<class T> shared_ptr<T> atomic_exchange( shared_ptr<T> * p, shared_ptr<T> r )
+{
+    boost::detail::spinlock & sp = boost::detail::spinlock_pool<2>::spinlock_for( p );
+
+    sp.lock();
+    p->swap( r );
+    sp.unlock();
+
+    return r; // return std::move( r )
+}
+
+template<class T> shared_ptr<T> atomic_exchange_explicit( shared_ptr<T> * p, shared_ptr<T> r, memory_order /*mo*/ )
+{
+    return atomic_exchange( p, r ); // std::move( r )
+}
+
+template<class T> bool atomic_compare_exchange( shared_ptr<T> * p, shared_ptr<T> * v, shared_ptr<T> w )
+{
+    boost::detail::spinlock & sp = boost::detail::spinlock_pool<2>::spinlock_for( p );
+
+    sp.lock();
+
+    if( p->_internal_equiv( *v ) )
+    {
+        p->swap( w );
+
+        sp.unlock();
+
+        return true;
+    }
+    else
+    {
+        shared_ptr<T> tmp( *p );
+
+        sp.unlock();
+
+        tmp.swap( *v );
+        return false;
+    }
+}
+
+template<class T> inline bool atomic_compare_exchange_explicit( shared_ptr<T> * p, shared_ptr<T> * v, shared_ptr<T> w, memory_order /*success*/, memory_order /*failure*/ )
+{
+    return atomic_compare_exchange( p, v, w ); // std::move( w )
+}
+
+#endif
+
+} // namespace boost
+
+#ifdef BOOST_MSVC
+# pragma warning(pop)
+#endif
+
+#endif  // #if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+
+#endif  // #ifndef BOOST_SMART_PTR_SHARED_PTR_HPP_INCLUDED

include/boost/smart_ptr/weak_ptr.hpp

@@ -0,0 +1,230 @@
+#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>
+
+#ifdef BOOST_MSVC  // moved here to work around VC++ compiler crash
+# pragma warning(push)
+# pragma warning(disable:4284) // odd return type for operator->
+#endif
+
+namespace boost
+{
+
+template<class T> class weak_ptr
+{
+private:
+
+    // Borland 5.5.1 specific workarounds
+    typedef weak_ptr<T> this_type;
+
+public:
+
+    typedef T element_type;
+
+    weak_ptr(): px(0), pn() // never throws in 1.30+
+    {
+    }
+
+//  generated copy constructor, assignment, destructor are fine
+
+
+//
+//  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 detail::sp_enable_if_convertible<Y,T>::type = detail::sp_empty() )
+
+#else
+
+    weak_ptr( weak_ptr<Y> const & r )
+
+#endif
+    : px(r.lock().get()), pn(r.pn) // never throws
+    {
+    }
+
+#if defined( BOOST_HAS_RVALUE_REFS )
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    weak_ptr( weak_ptr<Y> && r, typename detail::sp_enable_if_convertible<Y,T>::type = detail::sp_empty() )
+
+#else
+
+    weak_ptr( weak_ptr<Y> && r )
+
+#endif
+    : px(r.lock().get()), pn(std::move(r.pn)) // never throws
+    {
+        r.px = 0;
+    }
+
+    // for better efficiency in the T == Y case
+    weak_ptr( weak_ptr && r ): px( r.px ), pn(std::move(r.pn)) // never throws
+    {
+        r.px = 0;
+    }
+
+    // for better efficiency in the T == Y case
+    weak_ptr & operator=( weak_ptr && r ) // never throws
+    {
+        this_type( std::move( r ) ).swap( *this );
+        return *this;
+    }
+
+
+#endif
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    weak_ptr( shared_ptr<Y> const & r, typename detail::sp_enable_if_convertible<Y,T>::type = detail::sp_empty() )
+
+#else
+
+    weak_ptr( shared_ptr<Y> const & r )
+
+#endif
+    : px( r.px ), pn( r.pn ) // never throws
+    {
+    }
+
+#if !defined(BOOST_MSVC) || (BOOST_MSVC >= 1300)
+
+    template<class Y>
+    weak_ptr & operator=(weak_ptr<Y> const & r) // never throws
+    {
+        px = r.lock().get();
+        pn = r.pn;
+        return *this;
+    }
+
+#if defined( BOOST_HAS_RVALUE_REFS )
+
+    template<class Y>
+    weak_ptr & operator=(weak_ptr<Y> && r)
+    {
+        this_type( std::move( r ) ).swap( *this );
+        return *this;
+    }
+
+#endif
+
+    template<class Y>
+    weak_ptr & operator=(shared_ptr<Y> const & r) // never throws
+    {
+        px = r.px;
+        pn = r.pn;
+        return *this;
+    }
+
+#endif
+
+    shared_ptr<T> lock() const // never throws
+    {
+        return shared_ptr<element_type>( *this, boost::detail::sp_nothrow_tag() );
+    }
+
+    long use_count() const // never throws
+    {
+        return pn.use_count();
+    }
+
+    bool expired() const // never throws
+    {
+        return pn.use_count() == 0;
+    }
+
+    bool _empty() const // extension, not in std::weak_ptr
+    {
+        return pn.empty();
+    }
+
+    void reset() // never throws in 1.30+
+    {
+        this_type().swap(*this);
+    }
+
+    void swap(this_type & other) // never throws
+    {
+        std::swap(px, other.px);
+        pn.swap(other.pn);
+    }
+
+    void _internal_assign(T * px2, boost::detail::shared_count const & pn2)
+    {
+        px = px2;
+        pn = pn2;
+    }
+
+    template<class Y> bool _internal_less(weak_ptr<Y> const & rhs) const
+    {
+        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
+
+    T * 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)
+{
+    return a._internal_less(b);
+}
+
+template<class T> void swap(weak_ptr<T> & a, weak_ptr<T> & b)
+{
+    a.swap(b);
+}
+
+} // namespace boost
+
+#ifdef BOOST_MSVC
+# pragma warning(pop)
+#endif    
+
+#endif  // #ifndef BOOST_SMART_PTR_WEAK_PTR_HPP_INCLUDED

include/boost/weak_ptr.hpp

@@ -6,183 +6,13 @@
 //
 //  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)
+//  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/detail/shared_count.hpp>
-#include <boost/shared_ptr.hpp>
-
-#ifdef BOOST_MSVC  // moved here to work around VC++ compiler crash
-# pragma warning(push)
-# pragma warning(disable:4284) // odd return type for operator->
-#endif
-
-namespace boost
-{
-
-template<class T> class weak_ptr
-{
-private:
-
-    // Borland 5.5.1 specific workarounds
-    typedef weak_ptr<T> this_type;
-
-public:
-
-    typedef T element_type;
-
-    weak_ptr(): px(0), pn() // never throws in 1.30+
-    {
-    }
-
-//  generated copy constructor, assignment, destructor are fine
-
-
-//
-//  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>
-    weak_ptr(weak_ptr<Y> const & r): pn(r.pn) // never throws
-    {
-        px = r.lock().get();
-    }
-
-    template<class Y>
-    weak_ptr(shared_ptr<Y> const & r): px(r.px), pn(r.pn) // never throws
-    {
-    }
-
-#if !defined(BOOST_MSVC) || (BOOST_MSVC >= 1300)
-
-    template<class Y>
-    weak_ptr & operator=(weak_ptr<Y> const & r) // never throws
-    {
-        px = r.lock().get();
-        pn = r.pn;
-        return *this;
-    }
-
-    template<class Y>
-    weak_ptr & operator=(shared_ptr<Y> const & r) // never throws
-    {
-        px = r.px;
-        pn = r.pn;
-        return *this;
-    }
-
-#endif
-
-    shared_ptr<T> lock() const // never throws
-    {
-#if defined(BOOST_HAS_THREADS)
-
-        // optimization: avoid throw overhead
-        if(expired())
-        {
-            return shared_ptr<element_type>();
-        }
-
-        try
-        {
-            return shared_ptr<element_type>(*this);
-        }
-        catch(bad_weak_ptr const &)
-        {
-            // Q: how can we get here?
-            // A: another thread may have invalidated r after the use_count test above.
-            return shared_ptr<element_type>();
-        }
-
-#else
-
-        // optimization: avoid try/catch overhead when single threaded
-        return expired()? shared_ptr<element_type>(): shared_ptr<element_type>(*this);
-
-#endif
-    }
-
-    long use_count() const // never throws
-    {
-        return pn.use_count();
-    }
-
-    bool expired() const // never throws
-    {
-        return pn.use_count() == 0;
-    }
-
-    void reset() // never throws in 1.30+
-    {
-        this_type().swap(*this);
-    }
-
-    void swap(this_type & other) // never throws
-    {
-        std::swap(px, other.px);
-        pn.swap(other.pn);
-    }
-
-    void _internal_assign(T * px2, boost::detail::shared_count const & pn2)
-    {
-        px = px2;
-        pn = pn2;
-    }
-
-    template<class Y> bool _internal_less(weak_ptr<Y> const & rhs) const
-    {
-        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
-
-    T * 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)
-{
-    return a._internal_less(b);
-}
-
-template<class T> void swap(weak_ptr<T> & a, weak_ptr<T> & b)
-{
-    a.swap(b);
-}
-
-} // namespace boost
-
-#ifdef BOOST_MSVC
-# pragma warning(pop)
-#endif    
+#include <boost/smart_ptr/weak_ptr.hpp>
 
 #endif  // #ifndef BOOST_WEAK_PTR_HPP_INCLUDED

intrusive_ptr.html

@@ -62,6 +62,8 @@
       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
@@ -148,6 +150,10 @@ intrusive_ptr &amp; operator=(T * r);</pre>
 			<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>

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_HAS_VARIADIC_TMPL ) && defined( BOOST_HAS_RVALUE_REFS )	// 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>

shared_array.htm

@@ -47,7 +47,7 @@
       void <a href="#reset">reset</a>(T * p = 0);
       template&lt;class D&gt; void <a href="#reset">reset</a>(T * p, D d);
 
-      T &amp; <a href="#indexing">operator[]</a>(std::ptrdiff_t i) const() const; // never throws
+      T &amp; <a href="#indexing">operator[]</a>(std::ptrdiff_t i) const; // never throws
       T * <a href="#get">get</a>() const; // never throws
 
       bool <a href="#unique">unique</a>() const; // never throws

shared_ptr.htm

@@ -19,54 +19,54 @@
 			<A href="smarttests.htm">Smart Pointer Timings</A><br>
 			<A href="sp_techniques.html">Programming Techniques</A></p>
 		<h2><a name="Introduction">Introduction</a></h2>
-		<p>The <b>shared_ptr</b> class template stores a pointer to a dynamically allocated 
-			object, typically with a C++ <EM>new-expression</EM>. The object pointed to is 
-			guaranteed to be deleted when the last <b>shared_ptr</b> pointing to it is 
+		<p>The <b>shared_ptr</b> class template stores a pointer to a dynamically allocated
+			object, typically with a C++ <EM>new-expression</EM>. The object pointed to is
+			guaranteed to be deleted when the last <b>shared_ptr</b> pointing to it is
 			destroyed or reset. See the <A href="#example">example</A>.</p>
-		<p>Every <b>shared_ptr</b> meets the <b>CopyConstructible</b> and <b>Assignable</b> 
-			requirements of the C++ Standard Library, and so can be used in standard 
-			library containers. Comparison operators are supplied so that <b>shared_ptr</b> 
+		<p>Every <b>shared_ptr</b> meets the <b>CopyConstructible</b> and <b>Assignable</b>
+			requirements of the C++ Standard Library, and so can be used in standard
+			library containers. Comparison operators are supplied so that <b>shared_ptr</b>
 			works with the standard library's associative containers.</p>
-		<p>Normally, a <b>shared_ptr</b> cannot correctly hold a pointer to a dynamically 
-			allocated array. See <A href="shared_array.htm"><b>shared_array</b></A> for 
+		<p>Normally, a <b>shared_ptr</b> cannot correctly hold a pointer to a dynamically
+			allocated array. See <A href="shared_array.htm"><b>shared_array</b></A> for
 			that usage.</p>
-		<p>Because the implementation uses reference counting, cycles of <b>shared_ptr</b> instances 
+		<p>Because the implementation uses reference counting, cycles of <b>shared_ptr</b> instances
 			will not be reclaimed. For example, if <b>main()</b> holds a <b>shared_ptr</b> to
 			<b>A</b>, which directly or indirectly holds a <b>shared_ptr</b> back to <b>A</b>,
-			<b>A</b>'s use count will be 2. Destruction of the original <b>shared_ptr</b> will 
+			<b>A</b>'s use count will be 2. Destruction of the original <b>shared_ptr</b> will
 			leave <b>A</b> dangling with a use count of 1. Use <A href="weak_ptr.htm">weak_ptr</A>
 			to "break cycles."</p>
-		<p>The class template is parameterized on <b>T</b>, the type of the object pointed 
-			to. <STRONG>shared_ptr</STRONG> and most of its member functions place no 
+		<p>The class template is parameterized on <b>T</b>, the type of the object pointed
+			to. <STRONG>shared_ptr</STRONG> and most of its member functions place no
 			requirements on <STRONG>T</STRONG>; it is allowed to be an incomplete type, or <STRONG>
 				void</STRONG>. Member functions that do place additional requirements (<A href="#constructors">constructors</A>,
 			<A href="#reset">reset</A>) are explicitly documented below.</p>
 		<P><STRONG>shared_ptr&lt;T&gt;</STRONG> can be implicitly converted to <STRONG>shared_ptr&lt;U&gt;</STRONG>
-			whenever <STRONG>T*</STRONG> can be implicitly converted to <STRONG>U*</STRONG>. 
-			In particular, <STRONG>shared_ptr&lt;T&gt;</STRONG> is implicitly convertible 
+			whenever <STRONG>T*</STRONG> can be implicitly converted to <STRONG>U*</STRONG>.
+			In particular, <STRONG>shared_ptr&lt;T&gt;</STRONG> is implicitly convertible
 			to <STRONG>shared_ptr&lt;T const&gt;</STRONG>, to <STRONG>shared_ptr&lt;U&gt;</STRONG>
 			where <STRONG>U</STRONG> is an accessible base of <STRONG>T</STRONG>, and to <STRONG>
 				shared_ptr&lt;void&gt;</STRONG>.</P>
-		<P><STRONG>shared_ptr</STRONG> is now part of <STRONG>TR1</STRONG>, the first C++ 
-			Library Technical Report. The latest draft of <STRONG>TR1</STRONG> is available 
+		<P><STRONG>shared_ptr</STRONG> is now part of <STRONG>TR1</STRONG>, the first C++
+			Library Technical Report. The latest draft of <STRONG>TR1</STRONG> is available
 			at the following location:</P>
 		<P><A href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1745.pdf">http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1745.pdf</A>
 			(1.36Mb PDF)</P>
-		<P>This implementation conforms to the TR1 specification, with the only exception 
+		<P>This implementation conforms to the TR1 specification, with the only exception
 			that it resides in namespace <code>boost</code> instead of <code>std::tr1</code>.</P>
 		<h2><a name="BestPractices">Best Practices</a></h2>
-		<P>A simple guideline that nearly eliminates the possibility of memory leaks is: 
+		<P>A simple guideline that nearly eliminates the possibility of memory leaks is:
 			always use a named smart pointer variable to hold the result of <STRONG>new. </STRONG>
-			Every occurence of the <STRONG>new</STRONG> keyword in the code should have the 
+			Every occurence of the <STRONG>new</STRONG> keyword in the code should have the
 			form:</P>
 		<PRE>shared_ptr&lt;T&gt; p(new Y);</PRE>
 		<P>It is, of course, acceptable to use another smart pointer in place of <STRONG>shared_ptr</STRONG>
-			above; having <STRONG>T</STRONG> and <STRONG>Y</STRONG> be the same type, or 
+			above; having <STRONG>T</STRONG> and <STRONG>Y</STRONG> be the same type, or
 			passing arguments to <STRONG>Y</STRONG>'s constructor is also OK.</P>
-		<P>If you observe this guideline, it naturally follows that you will have no 
-			explicit <STRONG>delete</STRONG>s; <STRONG>try/catch</STRONG> constructs will 
+		<P>If you observe this guideline, it naturally follows that you will have no
+			explicit <STRONG>delete</STRONG>s; <STRONG>try/catch</STRONG> constructs will
 			be rare.</P>
-		<P>Avoid using unnamed <STRONG>shared_ptr</STRONG> temporaries to save typing; to 
+		<P>Avoid using unnamed <STRONG>shared_ptr</STRONG> temporaries to save typing; to
 			see why this is dangerous, consider this example:</P>
 		<PRE>void f(shared_ptr&lt;int&gt;, int);
 int g();
@@ -83,13 +83,18 @@ void bad()
 }
 </PRE>
 		<P>The function <STRONG>ok</STRONG> follows the guideline to the letter, whereas <STRONG>
-				bad</STRONG> constructs the temporary <STRONG>shared_ptr</STRONG> in place, 
-			admitting the possibility of a memory leak. Since function arguments are 
-			evaluated in unspecified order, it is possible for <STRONG>new int(2)</STRONG> to 
+				bad</STRONG> constructs the temporary <STRONG>shared_ptr</STRONG> in place,
+			admitting the possibility of a memory leak. Since function arguments are
+			evaluated in unspecified order, it is possible for <STRONG>new int(2)</STRONG> to
 			be evaluated first, <STRONG>g()</STRONG> second, and we may never get to the <STRONG>
-				shared_ptr </STRONG>constructor if <STRONG>g</STRONG> throws an exception. 
+				shared_ptr </STRONG>constructor if <STRONG>g</STRONG> throws an exception.
 			See <A href="http://www.gotw.ca/gotw/056.htm">Herb Sutter's treatment</A> (also <A href="http://www.cuj.com/reference/articles/2002/0212/0212_sutter.htm">
 				here</A>) of the issue for more information.</P>
+		<P>The exception safety problem described above may also be eliminated by using
+			the <a href="make_shared.html"><code>make_shared</code></a>
+			or <a href="make_shared.html"><code>allocate_shared</code></a>
+			factory functions defined in boost/make_shared.hpp.  These factory functions also provide
+			an efficiency benefit by consolidating allocations.<P>
 		<h2><a name="Synopsis">Synopsis</a></h2>
 		<pre>namespace boost {
 
@@ -115,7 +120,7 @@ void bad()
       template&lt;class Y&gt; explicit <A href="#constructors" >shared_ptr</A>(<A href="weak_ptr.htm" >weak_ptr</A>&lt;Y&gt; const &amp; r);
       template&lt;class Y&gt; explicit <A href="#constructors" >shared_ptr</A>(std::auto_ptr&lt;Y&gt; &amp; r);
 
-      shared_ptr &amp; <A href="#assignment" >operator=</A>(shared_ptr const &amp; r); // never throws  
+      shared_ptr &amp; <A href="#assignment" >operator=</A>(shared_ptr const &amp; r); // never throws
       template&lt;class Y&gt; shared_ptr &amp; <A href="#assignment" >operator=</A>(shared_ptr&lt;Y&gt; const &amp; r); // never throws
       template&lt;class Y&gt; shared_ptr &amp; <A href="#assignment" >operator=</A>(std::auto_ptr&lt;Y&gt; &amp; r);
 
@@ -178,32 +183,32 @@ void bad()
 			<p><b>Postconditions:</b> <code>use_count() == 0 &amp;&amp; get() == 0</code>.</p>
 			<p><b>Throws:</b> nothing.</p>
 		</blockquote>
-		<P><EM>[The nothrow guarantee is important, since <STRONG>reset()</STRONG> is specified 
-				in terms of the default constructor; this implies that the constructor must not 
+		<P><EM>[The nothrow guarantee is important, since <STRONG>reset()</STRONG> is specified
+				in terms of the default constructor; this implies that the constructor must not
 				allocate memory.]</EM></P>
 		<pre>template&lt;class Y&gt; explicit shared_ptr(Y * p);</pre>
 		<blockquote>
 			<p><b>Requirements:</b> <b>p</b> must be convertible to <b>T *</b>. <STRONG>Y</STRONG>
-				must be a complete type. The expression <code>delete p</code> must be 
+				must be a complete type. The expression <code>delete p</code> must be
 				well-formed, must not invoke undefined behavior, and must not throw exceptions.
 			</p>
 			<p><b>Effects:</b> Constructs a <b>shared_ptr</b> that <EM>owns</EM> the pointer <b>p</b>.</p>
 			<p><b>Postconditions:</b> <code>use_count() == 1 &amp;&amp; get() == p</code>.</p>
-			<p><b>Throws:</b> <STRONG>std::bad_alloc</STRONG>, or an implementation-defined 
+			<p><b>Throws:</b> <STRONG>std::bad_alloc</STRONG>, or an implementation-defined
 				exception when a resource other than memory could not be obtained.</p>
-			<p><b>Exception safety:</b> If an exception is thrown, <code>delete p</code> is 
+			<p><b>Exception safety:</b> If an exception is thrown, <code>delete p</code> is
 				called.</p>
-			<P><STRONG>Notes:</STRONG> <B>p</B> must be a pointer to an object that was 
+			<P><STRONG>Notes:</STRONG> <B>p</B> must be a pointer to an object that was
 				allocated via a C++ <B>new</B> expression or be 0. The postcondition that <A href="#use_count">
 					use count</A> is 1 holds even if <b>p</b> is 0; invoking <STRONG>delete</STRONG>
 				on a pointer that has a value of 0 is harmless.</P>
 		</blockquote>
-		<P><EM>[This constructor has been changed to a template in order to remember the actual 
-				pointer type passed. The destructor will call <STRONG>delete</STRONG> with the 
-				same pointer, complete with its original type, even when <STRONG>T</STRONG> does 
+		<P><EM>[This constructor has been changed to a template in order to remember the actual
+				pointer type passed. The destructor will call <STRONG>delete</STRONG> with the
+				same pointer, complete with its original type, even when <STRONG>T</STRONG> does
 				not have a virtual destructor, or is <STRONG>void</STRONG>.</EM></P>
-		<P><EM>The optional intrusive counting support has been dropped as it exposes too much 
-				implementation details and doesn't interact well with <STRONG>weak_ptr</STRONG>. 
+		<P><EM>The optional intrusive counting support has been dropped as it exposes too much
+				implementation details and doesn't interact well with <STRONG>weak_ptr</STRONG>.
 				The current implementation uses a different mechanism, <A href="enable_shared_from_this.html">
 					enable_shared_from_this</A>, to solve the "<STRONG>shared_ptr</STRONG> from <STRONG>
 					this</STRONG>" problem.</EM><EM>]</EM></P>
@@ -212,46 +217,46 @@ void bad()
 template&lt;class Y, class D, class A&gt; shared_ptr(Y * p, D d, A a);</pre>
 		<blockquote>
 			<p><b>Requirements:</b> <B>p</B> must be convertible to <B>T *</B>. <STRONG>D</STRONG>
-				must be <STRONG>CopyConstructible</STRONG>. The copy constructor and destructor 
-				of <b>D</b> must not throw. The expression <code>d(p)</code> must be 
+				must be <STRONG>CopyConstructible</STRONG>. The copy constructor and destructor
+				of <b>D</b> must not throw. The expression <code>d(p)</code> must be
 				well-formed, must not invoke undefined behavior, and must not throw exceptions. <STRONG>
-					A</STRONG> must be an <EM>Allocator</EM>, as described in section 20.1.5 (<STRONG>Allocator 
+					A</STRONG> must be an <EM>Allocator</EM>, as described in section 20.1.5 (<STRONG>Allocator
 					requirements</STRONG>) of the C++ Standard.
 			</p>
 			<p><b>Effects:</b> Constructs a <b>shared_ptr</b> that <EM>owns</EM> the pointer <STRONG>
-					p</STRONG> and the deleter <b>d</b>. The second constructor allocates 
+					p</STRONG> and the deleter <b>d</b>. The second constructor allocates
 				memory using a copy of <STRONG>a</STRONG>.</p>
 			<p><b>Postconditions:</b> <code>use_count() == 1 &amp;&amp; get() == p</code>.</p>
-			<p><b>Throws:</b> <STRONG>std::bad_alloc</STRONG>, or an implementation-defined 
+			<p><b>Throws:</b> <STRONG>std::bad_alloc</STRONG>, or an implementation-defined
 				exception when a resource other than memory could not be obtained.</p>
 			<p><b>Exception safety:</b> If an exception is thrown, <code>d(p)</code> is called.</p>
-			<p><b>Notes:</b> When the the time comes to delete the object pointed to by <b>p</b>, 
+			<p><b>Notes:</b> When the the time comes to delete the object pointed to by <b>p</b>,
 				the stored copy of <STRONG>d</STRONG> is invoked with the stored copy of <STRONG>p</STRONG>
 				as an argument.</p>
 		</blockquote>
 		<P><EM>[Custom deallocators allow a factory function returning a <STRONG>shared_ptr</STRONG>
-				to insulate the user from its memory allocation strategy. Since the deallocator 
-				is not part of the type, changing the allocation strategy does not break source 
-				or binary compatibility, and does not require a client recompilation. For 
+				to insulate the user from its memory allocation strategy. Since the deallocator
+				is not part of the type, changing the allocation strategy does not break source
+				or binary compatibility, and does not require a client recompilation. For
 				example, a "no-op" deallocator is useful when returning a <STRONG>shared_ptr</STRONG>
 				to a statically allocated object, and other variations allow a <STRONG>shared_ptr</STRONG>
 				to be used as a wrapper for another smart pointer, easing interoperability.</EM></P>
 		<P><EM>The support for custom deallocators does not impose significant overhead. Other <STRONG>
 					shared_ptr</STRONG> features still require a deallocator to be kept.</EM></P>
-		<P><EM>The requirement that the copy constructor of <b>D</b> does not throw comes from 
-				the pass by value. If the copy constructor throws, the pointer is leaked. 
+		<P><EM>The requirement that the copy constructor of <b>D</b> does not throw comes from
+				the pass by value. If the copy constructor throws, the pointer is leaked.
 				Removing the requirement requires a pass by (const) reference.</EM></P>
-		<P><EM>The main problem with pass by reference lies in its interaction with rvalues. A 
-				const reference may still cause a copy, and will require a const operator(). A 
-				non-const reference won't bind to an rvalue at all. A good solution to this 
+		<P><EM>The main problem with pass by reference lies in its interaction with rvalues. A
+				const reference may still cause a copy, and will require a const operator(). A
+				non-const reference won't bind to an rvalue at all. A good solution to this
 				problem is the rvalue reference proposed in <A href="http://std.dkuug.dk/jtc1/sc22/wg21/docs/papers/2002/n1377.htm">
 					N1377</A>/<A href="http://std.dkuug.dk/jtc1/sc22/wg21/docs/papers/2002/n1385.htm">N1385</A>.]</EM></P>
 		<pre>shared_ptr(shared_ptr const &amp; r); // never throws
 template&lt;class Y&gt; shared_ptr(shared_ptr&lt;Y&gt; const &amp; r); // never throws</pre>
 		<blockquote>
-			<p><b>Effects:</b> If <b>r</b> is <EM>empty</EM>, constructs an <EM>empty</EM> <b>shared_ptr</b>; 
+			<p><b>Effects:</b> If <b>r</b> is <EM>empty</EM>, constructs an <EM>empty</EM> <b>shared_ptr</b>;
 				otherwise, constructs a <b>shared_ptr</b> that <EM>shares ownership</EM> with <b>r</b>.</p>
-			<p><b>Postconditions:</b> <code>get() == r.get() &amp;&amp; use_count() == 
+			<p><b>Postconditions:</b> <code>get() == r.get() &amp;&amp; use_count() ==
 					r.use_count()</code>.</p>
 			<p><b>Throws:</b> nothing.</p>
 		</blockquote>
@@ -268,21 +273,21 @@ template&lt;class Y&gt; shared_ptr(shared_ptr&lt;Y&gt; const &amp; r); // never
 				<b>r</b> and stores a copy of the pointer stored in <STRONG>r</STRONG>.</p>
 			<p><b>Postconditions:</b> <code>use_count() == r.use_count()</code>.</p>
 			<p><b>Throws:</b> <b>bad_weak_ptr</b> when <code>r.use_count() == 0</code>.</p>
-			<p><b>Exception safety:</b> If an exception is thrown, the constructor has no 
+			<p><b>Exception safety:</b> If an exception is thrown, the constructor has no
 				effect.</p>
 		</blockquote>
 		<pre>template&lt;class Y&gt; shared_ptr(std::auto_ptr&lt;Y&gt; &amp; r);</pre>
 		<BLOCKQUOTE>
 			<P><B>Effects:</B> Constructs a <B>shared_ptr</B>, as if by storing a copy of <STRONG>r.release()</STRONG>.</P>
 			<p><b>Postconditions:</b> <code>use_count() == 1</code>.</p>
-			<p><b>Throws:</b> <STRONG>std::bad_alloc</STRONG>, or an implementation-defined 
+			<p><b>Throws:</b> <STRONG>std::bad_alloc</STRONG>, or an implementation-defined
 				exception when a resource other than memory could not be obtained.</p>
-			<P><B>Exception safety:</B> If an exception is thrown, the constructor has no 
+			<P><B>Exception safety:</B> If an exception is thrown, the constructor has no
 				effect.</P>
 		</BLOCKQUOTE>
-		<P><EM>[This constructor takes a the source <STRONG>auto_ptr</STRONG> by reference and 
-				not by value, and cannot accept <STRONG>auto_ptr</STRONG> temporaries. This is 
-				by design, as the constructor offers the strong guarantee; an rvalue reference 
+		<P><EM>[This constructor takes a the source <STRONG>auto_ptr</STRONG> by reference and
+				not by value, and cannot accept <STRONG>auto_ptr</STRONG> temporaries. This is
+				by design, as the constructor offers the strong guarantee; an rvalue reference
 				would solve this problem, too.]</EM></P>
 		<h3><a name="destructor">destructor</a></h3>
 		<pre>~shared_ptr(); // never throws</pre>
@@ -290,15 +295,15 @@ template&lt;class Y&gt; shared_ptr(shared_ptr&lt;Y&gt; const &amp; r); // never
 			<P><B>Effects:</B></P>
 			<UL>
 				<LI>
-					If <STRONG>*this</STRONG> is <EM>empty</EM>, or <EM>shares ownership</EM> with 
-					another <STRONG>shared_ptr</STRONG> instance (<code>use_count() &gt; 1</code>), 
+					If <STRONG>*this</STRONG> is <EM>empty</EM>, or <EM>shares ownership</EM> with
+					another <STRONG>shared_ptr</STRONG> instance (<code>use_count() &gt; 1</code>),
 				there are no side effects.
 				<LI>
-					Otherwise, if <STRONG>*this</STRONG> <EM>owns</EM> a pointer <STRONG>p</STRONG> 
+					Otherwise, if <STRONG>*this</STRONG> <EM>owns</EM> a pointer <STRONG>p</STRONG>
 					and a deleter <STRONG>d</STRONG>, <code>d(p)</code>
 				is called.
 				<LI>
-					Otherwise, <STRONG>*this</STRONG> <EM>owns</EM> a pointer <STRONG>p</STRONG>, 
+					Otherwise, <STRONG>*this</STRONG> <EM>owns</EM> a pointer <STRONG>p</STRONG>,
 					and <code>delete p</code> is called.</LI></UL>
 			<P><B>Throws:</B> nothing.</P>
 		</BLOCKQUOTE>
@@ -309,9 +314,9 @@ template&lt;class Y&gt; shared_ptr &amp; operator=(std::auto_ptr&lt;Y&gt; &amp;
 		<BLOCKQUOTE>
 			<P><B>Effects:</B> Equivalent to <code>shared_ptr(r).swap(*this)</code>.</P>
 			<P><B>Returns:</B> <code>*this</code>.</P>
-			<P><B>Notes:</B> The use count updates caused by the temporary object construction 
-				and destruction are not considered observable side effects, and the 
-				implementation is free to meet the effects (and the implied guarantees) via 
+			<P><B>Notes:</B> The use count updates caused by the temporary object construction
+				and destruction are not considered observable side effects, and the
+				implementation is free to meet the effects (and the implied guarantees) via
 				different means, without creating a temporary. In particular, in the example:</P>
 			<pre>shared_ptr&lt;int&gt; p(new int);
 shared_ptr&lt;void&gt; q(p);
@@ -365,32 +370,32 @@ q = p;
 		<blockquote>
 			<p><b>Returns:</b> <code>use_count() == 1</code>.</p>
 			<p><b>Throws:</b> nothing.</p>
-			<P><B>Notes:</B> <code>unique()</code> may be faster than <code>use_count()</code>. 
-				If you are using <code>unique()</code> to implement copy on write, do not rely 
+			<P><B>Notes:</B> <code>unique()</code> may be faster than <code>use_count()</code>.
+				If you are using <code>unique()</code> to implement copy on write, do not rely
 				on a specific value when the stored pointer is zero.</P>
 		</blockquote>
 		<h3><a name="use_count">use_count</a></h3>
 		<pre>long use_count() const; // never throws</pre>
 		<blockquote>
-			<p><b>Returns:</b> the number of <b>shared_ptr</b> objects, <STRONG>*this</STRONG> included, 
-				that <i>share ownership</i> with <b>*this</b>, or an unspecified nonnegative 
-				value when <STRONG>*this</STRONG> is <EM>empty</EM>.</p>
+			<p><b>Returns:</b> the number of <b>shared_ptr</b> objects, <STRONG>*this</STRONG> included,
+				that <i>share ownership</i> with <b>*this</b>, or 0 when <STRONG>*this</STRONG>
+				is <EM>empty</EM>.</p>
 			<p><b>Throws:</b> nothing.</p>
-			<P><B>Notes:</B> <code>use_count()</code> is not necessarily efficient. Use only 
+			<P><B>Notes:</B> <code>use_count()</code> is not necessarily efficient. Use only
 				for debugging and testing purposes, not for production code.</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 
+			<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>shared_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 
+			<P><B>Notes:</B> This conversion operator allows <b>shared_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>
-		<P><EM>[The conversion to bool is not merely syntactic sugar. It allows <STRONG>shared_ptr</STRONG>s 
+		<P><EM>[The conversion to bool is not merely syntactic sugar. It allows <STRONG>shared_ptr</STRONG>s
 				to be declared in conditions when using <A href="#dynamic_pointer_cast">dynamic_pointer_cast</A>
 				or <A href="weak_ptr.htm#lock">weak_ptr::lock</A>.]</EM></P>
 		<h3><a name="swap">swap</a></h3>
@@ -422,19 +427,19 @@ q = p;
 					<b>operator&lt;</b> is a strict weak ordering as described in section 25.3 <code>[lib.alg.sorting]</code>
 				of the C++ standard;
 				<LI>
-					under the equivalence relation defined by <STRONG>operator&lt;</STRONG>, <code>!(a 
-						&lt; b) &amp;&amp; !(b &lt; a)</code>, two <STRONG>shared_ptr</STRONG> instances 
+					under the equivalence relation defined by <STRONG>operator&lt;</STRONG>, <code>!(a
+						&lt; b) &amp;&amp; !(b &lt; a)</code>, two <STRONG>shared_ptr</STRONG> instances
 					are equivalent if and only if they <EM>share ownership</EM> or are both <EM>empty</EM>.</LI></UL>
 			<p><b>Throws:</b> nothing.</p>
-			<P><B>Notes:</B> Allows <STRONG>shared_ptr</STRONG> objects to be used as keys in 
+			<P><B>Notes:</B> Allows <STRONG>shared_ptr</STRONG> objects to be used as keys in
 				associative containers.</P>
 		</blockquote>
 		<P><EM>[<STRONG>Operator&lt;</STRONG> has been preferred over a <STRONG>std::less </STRONG>
 				specialization for consistency and legality reasons, as <STRONG>std::less</STRONG>
-				is required to return the results of <STRONG>operator&lt;</STRONG>, and many 
+				is required to return the results of <STRONG>operator&lt;</STRONG>, and many
 				standard algorithms use <STRONG>operator&lt;</STRONG> instead of <STRONG>std::less</STRONG>
-				for comparisons when a predicate is not supplied. Composite objects, like <STRONG>std::pair</STRONG>, 
-				also implement their <STRONG>operator&lt;</STRONG> in terms of their contained 
+				for comparisons when a predicate is not supplied. Composite objects, like <STRONG>std::pair</STRONG>,
+				also implement their <STRONG>operator&lt;</STRONG> in terms of their contained
 				subobjects' <STRONG>operator&lt;</STRONG>.</EM></P>
 		<P><EM>The rest of the comparison operators are omitted by design.]</EM></P>
 		<h3><a name="free-swap">swap</a></h3>
@@ -443,11 +448,11 @@ q = p;
 		<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 
+			<P><B>Notes:</B> Matches the interface of <B>std::swap</B>. Provided as an aid to
 				generic programming.</P>
 		</BLOCKQUOTE>
 		<P><EM>[<STRONG>swap</STRONG> is defined in the same namespace as <STRONG>shared_ptr</STRONG>
-				as this is currently the only legal way to supply a <STRONG>swap</STRONG> function 
+				as this is currently the only legal way to supply a <STRONG>swap</STRONG> function
 				that has a chance to be used by the standard library.]</EM></P>
 		<h3><a name="get_pointer">get_pointer</a></h3>
 		<pre>template&lt;class T&gt;
@@ -464,13 +469,13 @@ q = p;
 		<BLOCKQUOTE>
 			<P><STRONG>Requires:</STRONG> The expression <code>static_cast&lt;T*&gt;(r.get())</code>
 				must be well-formed.</P>
-			<P><B>Returns:</B> If <b>r</b> is <i>empty</i>, an <i>empty</i> <b>shared_ptr&lt;T&gt;</b>; 
+			<P><B>Returns:</B> If <b>r</b> is <i>empty</i>, an <i>empty</i> <b>shared_ptr&lt;T&gt;</b>;
 				otherwise, a <STRONG>shared_ptr&lt;T&gt;</STRONG> object that stores a copy of <code>
 					static_cast&lt;T*&gt;(r.get())</code> and <i>shares ownership</i> with <b>r</b>.</P>
 			<P><B>Throws:</B> nothing.</P>
 			<P><B>Notes:</B> the seemingly equivalent expression</P>
 			<p><code>shared_ptr&lt;T&gt;(static_cast&lt;T*&gt;(r.get()))</code></p>
-			<p>will eventually result in undefined behavior, attempting to delete the same 
+			<p>will eventually result in undefined behavior, attempting to delete the same
 				object twice.</p>
 		</BLOCKQUOTE>
 		<h3><a name="const_pointer_cast">const_pointer_cast</a></h3>
@@ -479,13 +484,13 @@ q = p;
 		<BLOCKQUOTE>
 			<P><STRONG>Requires:</STRONG> The expression <code>const_cast&lt;T*&gt;(r.get())</code>
 				must be well-formed.</P>
-			<P><B>Returns:</B> If <b>r</b> is <i>empty</i>, an <i>empty</i> <b>shared_ptr&lt;T&gt;</b>; 
+			<P><B>Returns:</B> If <b>r</b> is <i>empty</i>, an <i>empty</i> <b>shared_ptr&lt;T&gt;</b>;
 				otherwise, a <STRONG>shared_ptr&lt;T&gt;</STRONG> object that stores a copy of <code>
 					const_cast&lt;T*&gt;(r.get())</code> and <i>shares ownership</i> with <b>r</b>.</P>
 			<P><B>Throws:</B> nothing.</P>
 			<P><B>Notes:</B> the seemingly equivalent expression</P>
 			<p><code>shared_ptr&lt;T&gt;(const_cast&lt;T*&gt;(r.get()))</code></p>
-			<p>will eventually result in undefined behavior, attempting to delete the same 
+			<p>will eventually result in undefined behavior, attempting to delete the same
 				object twice.</p>
 		</BLOCKQUOTE>
 		<h3><a name="dynamic_pointer_cast">dynamic_pointer_cast</a></h3>
@@ -498,14 +503,14 @@ q = p;
 			<UL>
 				<LI>
 					When <CODE>dynamic_cast&lt;T*&gt;(r.get())</CODE> returns a nonzero value, a <STRONG>
-						shared_ptr&lt;T&gt;</STRONG> object that stores a copy of it and <i>shares 
+						shared_ptr&lt;T&gt;</STRONG> object that stores a copy of it and <i>shares
 						ownership</i> with <STRONG>r</STRONG>;
 				<LI>
 					Otherwise, an <i>empty</i> <STRONG>shared_ptr&lt;T&gt;</STRONG> object.</LI></UL>
 			<P><B>Throws:</B> nothing.</P>
 			<P><B>Notes:</B> the seemingly equivalent expression</P>
 			<P><CODE>shared_ptr&lt;T&gt;(dynamic_cast&lt;T*&gt;(r.get()))</CODE></P>
-			<P>will eventually result in undefined behavior, attempting to delete the same 
+			<P>will eventually result in undefined behavior, attempting to delete the same
 				object twice.</P>
 		</BLOCKQUOTE>
 		<h3><a name="insertion-operator">operator&lt;&lt;</a></h3>
@@ -520,40 +525,41 @@ q = p;
     D * get_deleter(shared_ptr&lt;T&gt; const &amp; p);</pre>
 		<BLOCKQUOTE>
 			<P><B>Returns:</B> If <STRONG>*this</STRONG> <EM>owns</EM> a deleter <STRONG>d</STRONG>
-				of type (cv-unqualified) <STRONG>D</STRONG>, returns <code>&amp;d</code>; 
+				of type (cv-unqualified) <STRONG>D</STRONG>, returns <code>&amp;d</code>;
 				otherwise returns 0.</P>
+			<P><B>Throws:</B> nothing.</P>
 		</BLOCKQUOTE>
 		<h2><a name="example">Example</a></h2>
-		<p>See <A href="example/shared_ptr_example.cpp">shared_ptr_example.cpp</A> for a 
+		<p>See <A href="example/shared_ptr_example.cpp">shared_ptr_example.cpp</A> for a
 			complete example program. The program builds a <b>std::vector</b> and <b>std::set</b>
 			of <b>shared_ptr</b> objects.</p>
 		<p>Note that after the containers have been populated, some of the <b>shared_ptr</b>
-			objects will have a use count of 1 rather than a use count of 2, since the set 
-			is a <b>std::set</b> rather than a <b>std::multiset</b>, and thus does not 
-			contain duplicate entries. Furthermore, the use count may be even higher at 
-			various times while <b>push_back</b> and <b>insert</b> container operations are 
-			performed. More complicated yet, the container operations may throw exceptions 
-			under a variety of circumstances. Getting the memory management and exception 
+			objects will have a use count of 1 rather than a use count of 2, since the set
+			is a <b>std::set</b> rather than a <b>std::multiset</b>, and thus does not
+			contain duplicate entries. Furthermore, the use count may be even higher at
+			various times while <b>push_back</b> and <b>insert</b> container operations are
+			performed. More complicated yet, the container operations may throw exceptions
+			under a variety of circumstances. Getting the memory management and exception
 			handling in this example right without a smart pointer would be a nightmare.</p>
 		<h2><a name="Handle/Body">Handle/Body</a> Idiom</h2>
-		<p>One common usage of <b>shared_ptr</b> is to implement a handle/body (also called 
-			pimpl) idiom which avoids exposing the body (implementation) in the header 
+		<p>One common usage of <b>shared_ptr</b> is to implement a handle/body (also called
+			pimpl) idiom which avoids exposing the body (implementation) in the header
 			file.</p>
 		<p>The <A href="example/shared_ptr_example2_test.cpp">shared_ptr_example2_test.cpp</A>
-			sample program includes a header file, <A href="example/shared_ptr_example2.hpp">shared_ptr_example2.hpp</A>, 
-			which uses a <b>shared_ptr&lt;&gt;</b> to an incomplete type to hide the 
-			implementation. The instantiation of member functions which require a complete 
+			sample program includes a header file, <A href="example/shared_ptr_example2.hpp">shared_ptr_example2.hpp</A>,
+			which uses a <b>shared_ptr&lt;&gt;</b> to an incomplete type to hide the
+			implementation. The instantiation of member functions which require a complete
 			type occurs in the <A href="example/shared_ptr_example2.cpp">shared_ptr_example2.cpp</A>
-			implementation file. Note that there is no need for an explicit destructor. 
-			Unlike ~scoped_ptr, ~shared_ptr does not require that <b>T</b> be a complete 
+			implementation file. Note that there is no need for an explicit destructor.
+			Unlike ~scoped_ptr, ~shared_ptr does not require that <b>T</b> be a complete
 			type.</p>
 		<h2><a name="ThreadSafety">Thread Safety</a></h2>
-		<p><STRONG>shared_ptr</STRONG> objects offer the same level of thread safety as 
-			built-in types. A <STRONG>shared_ptr</STRONG> instance can be "read" (accessed 
+		<p><STRONG>shared_ptr</STRONG> objects offer the same level of thread safety as
+			built-in types. A <STRONG>shared_ptr</STRONG> instance can be "read" (accessed
 			using only const operations) simultaneously by multiple threads. Different <STRONG>shared_ptr</STRONG>
 			instances can be "written to" (accessed using mutable operations such as <STRONG>operator=
-			</STRONG>or <STRONG>reset</STRONG>) simultaneosly by multiple threads (even 
-			when these instances are copies, and share the same reference count 
+			</STRONG>or <STRONG>reset</STRONG>) simultaneosly by multiple threads (even
+			when these instances are copies, and share the same reference count
 			underneath.)</p>
 		<P>Any other simultaneous accesses result in undefined behavior.</P>
 		<P>Examples:</P>
@@ -600,7 +606,7 @@ p3.reset(new int(1));
 p3.reset(new int(2)); // undefined, multiple writes
 </pre>
 		<p>&nbsp;</p>
-		<P>Starting with Boost release 1.33.0, <STRONG>shared_ptr</STRONG> uses a lock-free 
+		<P>Starting with Boost release 1.33.0, <STRONG>shared_ptr</STRONG> uses a lock-free
 			implementation on the following platforms:</P>
 		<UL>
 			<LI>
@@ -613,75 +619,75 @@ p3.reset(new int(2)); // undefined, multiple writes
 			GNU GCC on PowerPC;
 			<LI>
 				Windows.</LI></UL>
-		<P>If your program is single-threaded and does not link to any libraries that might 
+		<P>If your program is single-threaded and does not link to any libraries that might
 			have used <STRONG>shared_ptr</STRONG> in its default configuration, you can <STRONG>
-				#define</STRONG> the macro <STRONG>BOOST_SP_DISABLE_THREADS</STRONG> on a 
+				#define</STRONG> the macro <STRONG>BOOST_SP_DISABLE_THREADS</STRONG> on a
 			project-wide basis to switch to ordinary non-atomic reference count updates.</P>
-		<P>(Defining <STRONG>BOOST_SP_DISABLE_THREADS</STRONG> in some, but not all, 
-			translation units is technically a violation of the One Definition Rule and 
-			undefined behavior. Nevertheless, the implementation attempts to do its best to 
-			accommodate the request to use non-atomic updates in those translation units. 
+		<P>(Defining <STRONG>BOOST_SP_DISABLE_THREADS</STRONG> in some, but not all,
+			translation units is technically a violation of the One Definition Rule and
+			undefined behavior. Nevertheless, the implementation attempts to do its best to
+			accommodate the request to use non-atomic updates in those translation units.
 			No guarantees, though.)</P>
-		<P>You can define the macro <STRONG>BOOST_SP_USE_PTHREADS</STRONG> to turn off the 
-			lock-free platform-specific implementation and fall back to the generic <STRONG>pthread_mutex_t</STRONG>-based 
+		<P>You can define the macro <STRONG>BOOST_SP_USE_PTHREADS</STRONG> to turn off the
+			lock-free platform-specific implementation and fall back to the generic <STRONG>pthread_mutex_t</STRONG>-based
 			code.</P>
 		<h2><a name="FAQ">Frequently Asked Questions</a></h2>
-		<P><B>Q.</B> There are several variations of shared pointers, with different 
-			tradeoffs; why does the smart pointer library supply only a single 
-			implementation? It would be useful to be able to experiment with each type so 
+		<P><B>Q.</B> There are several variations of shared pointers, with different
+			tradeoffs; why does the smart pointer library supply only a single
+			implementation? It would be useful to be able to experiment with each type so
 			as to find the most suitable for the job at hand?</P>
 		<P>
-			<b>A.</b> An important goal of <STRONG>shared_ptr</STRONG> is to provide a 
-			standard shared-ownership pointer. Having a single pointer type is important 
-			for stable library interfaces, since different shared pointers typically cannot 
-			interoperate, i.e. a reference counted pointer (used by library A) cannot share 
+			<b>A.</b> An important goal of <STRONG>shared_ptr</STRONG> is to provide a
+			standard shared-ownership pointer. Having a single pointer type is important
+			for stable library interfaces, since different shared pointers typically cannot
+			interoperate, i.e. a reference counted pointer (used by library A) cannot share
 			ownership with a linked pointer (used by library B.)<BR>
 		</P>
-		<P><B>Q.</B> Why doesn't <B>shared_ptr</B> have template parameters supplying 
+		<P><B>Q.</B> Why doesn't <B>shared_ptr</B> have template parameters supplying
 			traits or policies to allow extensive user customization?</P>
 		<P>
-			<B>A.</B> Parameterization discourages users. The <B>shared_ptr</B> template is 
-			carefully crafted to meet common needs without extensive parameterization. Some 
-			day a highly configurable smart pointer may be invented that is also very easy 
-			to use and very hard to misuse. Until then, <B>shared_ptr</B> is the smart 
-			pointer of choice for a wide range of applications. (Those interested in policy 
+			<B>A.</B> Parameterization discourages users. The <B>shared_ptr</B> template is
+			carefully crafted to meet common needs without extensive parameterization. Some
+			day a highly configurable smart pointer may be invented that is also very easy
+			to use and very hard to misuse. Until then, <B>shared_ptr</B> is the smart
+			pointer of choice for a wide range of applications. (Those interested in policy
 			based smart pointers should read <A href="http://www.awprofessional.com/bookstore/product.asp?isbn=0201704315&amp;rl=1">
 				Modern C++ Design</A> by Andrei Alexandrescu.)<BR>
 		</P>
-		<P><B>Q.</B> I am not convinced. Default parameters can be used where appropriate 
+		<P><B>Q.</B> I am not convinced. Default parameters can be used where appropriate
 			to hide the complexity. Again, why not policies?</P>
 		<P>
-			<B>A.</B> Template parameters affect the type. See the answer to the first 
+			<B>A.</B> Template parameters affect the type. See the answer to the first
 			question above.<BR>
 		</P>
 		<P><B>Q.</B> Why doesn't <b>shared_ptr</b> use a linked list implementation?</P>
 		<P>
-			<b>A.</b> A linked list implementation does not offer enough advantages to 
+			<b>A.</b> A linked list implementation does not offer enough advantages to
 			offset the added cost of an extra pointer. See <A href="smarttests.htm">timings</A>
-			page. In addition, it is expensive to make a linked list implementation thread 
+			page. In addition, it is expensive to make a linked list implementation thread
 			safe.<BR>
 		</P>
-		<P><b>Q.</b> Why doesn't <b>shared_ptr</b> (or any of the other Boost smart 
+		<P><b>Q.</b> Why doesn't <b>shared_ptr</b> (or any of the other Boost smart
 			pointers) supply an automatic conversion to <b>T*</b>?</P>
 		<P>
 			<b>A.</b> Automatic conversion is believed to be too error prone.<BR>
 		</P>
 		<P><B>Q.</B> Why does <b>shared_ptr</b> supply use_count()?</P>
 		<P>
-			<b>A.</b> As an aid to writing test cases and debugging displays. One of the 
-			progenitors had use_count(), and it was useful in tracking down bugs in a 
+			<b>A.</b> As an aid to writing test cases and debugging displays. One of the
+			progenitors had use_count(), and it was useful in tracking down bugs in a
 			complex project that turned out to have cyclic-dependencies.<BR>
 		</P>
 		<P><B>Q.</B> Why doesn't <b>shared_ptr</b> specify complexity requirements?</P>
 		<P>
-			<b>A.</b> Because complexity requirements limit implementors and complicate the 
-			specification without apparent benefit to <b>shared_ptr</b> users. For example, 
-			error-checking implementations might become non-conforming if they had to meet 
+			<b>A.</b> Because complexity requirements limit implementors and complicate the
+			specification without apparent benefit to <b>shared_ptr</b> users. For example,
+			error-checking implementations might become non-conforming if they had to meet
 			stringent complexity requirements.<BR>
 		</P>
 		<P><b>Q.</b> Why doesn't <b>shared_ptr</b> provide a release() function?</P>
 		<P>
-			<b>A.</b> <b>shared_ptr</b> cannot give away ownership unless it's unique() 
+			<b>A.</b> <b>shared_ptr</b> cannot give away ownership unless it's unique()
 			because the other copy will still destroy the object.</P>
 		<p>Consider:</p>
 		<blockquote><pre>shared_ptr&lt;int&gt; a(new int);
@@ -691,26 +697,26 @@ int * p = a.release();
 
 // Who owns p now? b will still call delete on it in its destructor.</pre>
 		</blockquote>
-		<p>Furthermore, the pointer returned by <code>release()</code> would be difficult 
-			to deallocate reliably, as the source <b>shared_ptr</b> could have been created 
+		<p>Furthermore, the pointer returned by <code>release()</code> would be difficult
+			to deallocate reliably, as the source <b>shared_ptr</b> could have been created
 			with a custom deleter.<BR>
 		</p>
-		<P><b>Q.</b> Why is <code>operator-&gt;()</code> const, but its return value is a 
+		<P><b>Q.</b> Why is <code>operator-&gt;()</code> const, but its return value is a
 			non-const pointer to the element type?</P>
 		<P>
-			<b>A.</b> Shallow copy pointers, including raw pointers, typically don't 
-			propagate constness. It makes little sense for them to do so, as you can always 
-			obtain a non-const pointer from a const one and then proceed to modify the 
-			object through it.<b>shared_ptr</b> is "as close to raw pointers as possible 
+			<b>A.</b> Shallow copy pointers, including raw pointers, typically don't
+			propagate constness. It makes little sense for them to do so, as you can always
+			obtain a non-const pointer from a const one and then proceed to modify the
+			object through it.<b>shared_ptr</b> is "as close to raw pointers as possible
 			but no closer".<BR>
 			<BR>
 		</P>
 		<hr>
 		<p>
 			$Date$</p>
-		<p><small>Copyright 1999 Greg Colvin and Beman Dawes. Copyright 2002 Darin Adler. 
-			Copyright 2002-2005 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>
+		<p><small>Copyright 1999 Greg Colvin and Beman Dawes. Copyright 2002 Darin Adler.
+				Copyright 2002-2005 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>

smart_ptr.htm

@@ -14,15 +14,15 @@
 			<a href="#History">History and Acknowledgements</a><br>
 			<a href="#References">References</a></p>
 		<h2><a name="Introduction">Introduction</a></h2>
-		<p>Smart pointers are objects which store pointers to dynamically allocated (heap) 
-			objects. They behave much like built-in C++ pointers except that they 
-			automatically delete the object pointed to at the appropriate time. Smart 
-			pointers are particularly useful in the face of exceptions as they ensure 
-			proper destruction of dynamically allocated objects. They can also be used to 
+		<p>Smart pointers are objects which store pointers to dynamically allocated (heap)
+			objects. They behave much like built-in C++ pointers except that they
+			automatically delete the object pointed to at the appropriate time. Smart
+			pointers are particularly useful in the face of exceptions as they ensure
+			proper destruction of dynamically allocated objects. They can also be used to
 			keep track of dynamically allocated objects shared by multiple owners.</p>
-		<p>Conceptually, smart pointers are seen as owning the object pointed to, and thus 
+		<p>Conceptually, smart pointers are seen as owning the object pointed to, and thus
 			responsible for deletion of the object when it is no longer needed.</p>
-		<p>The smart pointer library provides five smart pointer class templates:</p>
+		<p>The smart pointer library provides six smart pointer class templates:</p>
 		<div align="left">
 			<table border="1" cellpadding="4" cellspacing="0">
 				<tr>
@@ -38,7 +38,7 @@
 				<tr>
 					<td><a href="shared_ptr.htm"><b>shared_ptr</b></a></td>
 					<td><a href="../../boost/shared_ptr.hpp">&lt;boost/shared_ptr.hpp&gt;</a></td>
-					<td>Object ownership shared among multiple pointers</td>
+					<td>Object ownership shared among multiple pointers.</td>
 				</tr>
 				<tr>
 					<td><a href="shared_array.htm"><b>shared_array</b></a></td>
@@ -58,126 +58,137 @@
 			</table>
 		</div>
 		<p>These templates are designed to complement the <b>std::auto_ptr</b> template.</p>
-		<p>They are examples of the "resource acquisition is initialization" idiom 
-			described in Bjarne Stroustrup's "The C++ Programming Language", 3rd edition, 
+		<p>They are examples of the "resource acquisition is initialization" idiom
+			described in Bjarne Stroustrup's "The C++ Programming Language", 3rd edition,
 			Section 14.4, Resource Management.</p>
-		<p>A test program, <a href="test/smart_ptr_test.cpp">smart_ptr_test.cpp</a>, is 
+		<p>Additionally, the smart pointer library provides efficient factory functions
+			for creating <code>shared_ptr</code> objects:</p>
+		<div align="left">
+			<table border="1" cellpadding="4" cellspacing="0">
+				<tr>
+					<td><a href="make_shared.html"><b>make_shared and allocate_shared</b></a></td>
+					<td><a href="../../boost/make_shared.hpp">&lt;boost/make_shared.hpp&gt;</a></td>
+					<td>Efficient creation of <code>shared_ptr</code> objects.</td>
+				</tr>
+			</table>
+		</div>
+		<p>A test program, <a href="test/smart_ptr_test.cpp">smart_ptr_test.cpp</a>, is
 			provided to verify correct operation.</p>
-		<p>A page on <a href="compatibility.htm">compatibility</a> with older versions of 
-			the Boost smart pointer library describes some of the changes since earlier 
+		<p>A page on <a href="compatibility.htm">compatibility</a> with older versions of
+			the Boost smart pointer library describes some of the changes since earlier
 			versions of the smart pointer implementation.</p>
-		<p>A page on <a href="smarttests.htm">smart pointer timings</a> will be of interest 
+		<p>A page on <a href="smarttests.htm">smart pointer timings</a> will be of interest
 			to those curious about performance issues.</p>
-		<P>A page on <A href="sp_techniques.html">smart pointer programming techniques</A> lists 
+		<P>A page on <A href="sp_techniques.html">smart pointer programming techniques</A> lists
 			some advanced applications of <code>shared_ptr</code> and <code>weak_ptr</code>.</P>
 		<h2><a name="common_requirements">Common Requirements</a></h2>
-		<p>These smart pointer class templates have a template parameter, <b>T</b>, which 
-			specifies the type of the object pointed to by the smart pointer. The behavior 
+		<p>These smart pointer class templates have a template parameter, <b>T</b>, which
+			specifies the type of the object pointed to by the smart pointer. The behavior
 			of the smart pointer templates is undefined if the destructor or <b>operator delete</b>
 			for objects of type <b>T</b> throw exceptions.</p>
-		<p><b>T</b> may be an incomplete type at the point of smart pointer declaration. 
-			Unless otherwise specified, it is required that <b>T</b> be a complete type at 
-			points of smart pointer instantiation. Implementations are required to diagnose 
-			(treat as an error) all violations of this requirement, including deletion of 
+		<p><b>T</b> may be an incomplete type at the point of smart pointer declaration.
+			Unless otherwise specified, it is required that <b>T</b> be a complete type at
+			points of smart pointer instantiation. Implementations are required to diagnose
+			(treat as an error) all violations of this requirement, including deletion of
 			an incomplete type. See the description of the <a href="../utility/utility.htm#checked_delete">
 				<b>checked_delete</b></a> function template.</p>
-		<P>Note that <STRONG>shared_ptr</STRONG> does not have this restriction, as most of 
+		<P>Note that <STRONG>shared_ptr</STRONG> does not have this restriction, as most of
 			its member functions do not require <STRONG>T</STRONG> to be a complete type.</P>
 		<h3>Rationale</h3>
-		<p>The requirements on <b>T</b> are carefully crafted to maximize safety yet allow 
-			handle-body (also called pimpl) and similar idioms. In these idioms a smart 
-			pointer may appear in translation units where <b>T</b> is an incomplete type. 
-			This separates interface from implementation and hides implementation from 
-			translation units which merely use the interface. Examples described in the 
-			documentation for specific smart pointers illustrate use of smart pointers in 
+		<p>The requirements on <b>T</b> are carefully crafted to maximize safety yet allow
+			handle-body (also called pimpl) and similar idioms. In these idioms a smart
+			pointer may appear in translation units where <b>T</b> is an incomplete type.
+			This separates interface from implementation and hides implementation from
+			translation units which merely use the interface. Examples described in the
+			documentation for specific smart pointers illustrate use of smart pointers in
 			these idioms.</p>
-		<p>Note that <b>scoped_ptr</b> requires that <b>T</b> be a complete type at 
+		<p>Note that <b>scoped_ptr</b> requires that <b>T</b> be a complete type at
 			destruction time, but <b>shared_ptr</b> does not.</p>
 		<h2><a name="Exception_Safety">Exception Safety</a></h2>
-		<p>Several functions in these smart pointer classes are specified as having "no 
-			effect" or "no effect except such-and-such" if an exception is thrown. This 
-			means that when an exception is thrown by an object of one of these classes, 
-			the entire program state remains the same as it was prior to the function call 
-			which resulted in the exception being thrown. This amounts to a guarantee that 
-			there are no detectable side effects. Other functions never throw exceptions. 
-			The only exception ever thrown by functions which do throw (assuming <b>T</b> meets 
-			the <a href="#common_requirements">common requirements</a>) is <b>std::bad_alloc</b>, 
-			and that is thrown only by functions which are explicitly documented as 
+		<p>Several functions in these smart pointer classes are specified as having "no
+			effect" or "no effect except such-and-such" if an exception is thrown. This
+			means that when an exception is thrown by an object of one of these classes,
+			the entire program state remains the same as it was prior to the function call
+			which resulted in the exception being thrown. This amounts to a guarantee that
+			there are no detectable side effects. Other functions never throw exceptions.
+			The only exception ever thrown by functions which do throw (assuming <b>T</b> meets
+			the <a href="#common_requirements">common requirements</a>) is <b>std::bad_alloc</b>,
+			and that is thrown only by functions which are explicitly documented as
 			possibly throwing <b>std::bad_alloc</b>.</p>
 		<h2><a name="Exception-specifications">Exception-specifications</a></h2>
 		<p>Exception-specifications are not used; see <a href="http://www.boost.org/more/lib_guide.htm#Exception-specification">
 				exception-specification rationale</a>.</p>
-		<p>All the smart pointer templates contain member functions which can never throw 
-			exceptions, because they neither throw exceptions themselves nor call other 
+		<p>All the smart pointer templates contain member functions which can never throw
+			exceptions, because they neither throw exceptions themselves nor call other
 			functions which may throw exceptions. These members are indicated by a comment: <code>
 				// never throws</code>.
 		</p>
-		<p>Functions which destroy objects of the pointed to type are prohibited from 
+		<p>Functions which destroy objects of the pointed to type are prohibited from
 			throwing exceptions by the <a href="#common_requirements">common requirements</a>.</p>
 		<h2><a name="History">History</a> and Acknowledgements</h2>
-		<p>January 2002. Peter Dimov reworked all four classes, adding features, fixing 
-			bugs, and splitting them into four separate headers, and added <b>weak_ptr</b>. 
-			See the <a href="compatibility.htm">compatibility</a> page for a summary of the 
+		<p>January 2002. Peter Dimov reworked all four classes, adding features, fixing
+			bugs, and splitting them into four separate headers, and added <b>weak_ptr</b>.
+			See the <a href="compatibility.htm">compatibility</a> page for a summary of the
 			changes.</p>
-		<p>May 2001. Vladimir Prus suggested requiring a complete type on destruction. 
-			Refinement evolved in discussions including Dave Abrahams, Greg Colvin, Beman 
-			Dawes, Rainer Deyke, Peter Dimov, John Maddock, Vladimir Prus, Shankar Sai, and 
+		<p>May 2001. Vladimir Prus suggested requiring a complete type on destruction.
+			Refinement evolved in discussions including Dave Abrahams, Greg Colvin, Beman
+			Dawes, Rainer Deyke, Peter Dimov, John Maddock, Vladimir Prus, Shankar Sai, and
 			others.</p>
 		<p>November 1999. Darin Adler provided <b>operator ==</b>, <b>operator !=</b>, and <b>std::swap</b>
 			and <b>std::less</b> specializations for shared types.</p>
 		<p>September 1999. Luis Coelho provided <b>shared_ptr::swap</b> and <b>shared_array::swap</b></p>
-		<p>May 1999. In April and May, 1999, Valentin Bonnard and David Abrahams made a 
+		<p>May 1999. In April and May, 1999, Valentin Bonnard and David Abrahams made a
 			number of suggestions resulting in numerous improvements.</p>
-		<p>October 1998. Beman Dawes proposed reviving the original semantics under the 
-			names <b>safe_ptr</b> and <b>counted_ptr</b>, meeting of Per Andersson, Matt 
-			Austern, Greg Colvin, Sean Corfield, Pete Becker, Nico Josuttis, Dietmar K<EFBFBD>hl, 
-			Nathan Myers, Chichiang Wan and Judy Ward. During the discussion, the four new 
-			class names were finalized, it was decided that there was no need to exactly 
-			follow the <b>std::auto_ptr</b> interface, and various function signatures and 
+		<p>October 1998. Beman Dawes proposed reviving the original semantics under the
+			names <b>safe_ptr</b> and <b>counted_ptr</b>, meeting of Per Andersson, Matt
+			Austern, Greg Colvin, Sean Corfield, Pete Becker, Nico Josuttis, Dietmar K&uuml;hl,
+			Nathan Myers, Chichiang Wan and Judy Ward. During the discussion, the four new
+			class names were finalized, it was decided that there was no need to exactly
+			follow the <b>std::auto_ptr</b> interface, and various function signatures and
 			semantics were finalized.</p>
-		<p>Over the next three months, several implementations were considered for <b>shared_ptr</b>, 
-			and discussed on the <a href="http://www.boost.org">boost.org</a> mailing list. 
-			The implementation questions revolved around the reference count which must be 
-			kept, either attached to the pointed to object, or detached elsewhere. Each of 
+		<p>Over the next three months, several implementations were considered for <b>shared_ptr</b>,
+			and discussed on the <a href="http://www.boost.org">boost.org</a> mailing list.
+			The implementation questions revolved around the reference count which must be
+			kept, either attached to the pointed to object, or detached elsewhere. Each of
 			those variants have themselves two major variants:
 			<ul>
 				<li>
-				Direct detached: the shared_ptr contains a pointer to the object, and a pointer 
+				Direct detached: the shared_ptr contains a pointer to the object, and a pointer
 				to the count.
 				<li>
-				Indirect detached: the shared_ptr contains a pointer to a helper object, which 
+				Indirect detached: the shared_ptr contains a pointer to a helper object, which
 				in turn contains a pointer to the object and the count.
 				<li>
 				Embedded attached: the count is a member of the object pointed to.
 				<li>
 					Placement attached: the count is attached via operator new manipulations.</li>
 			</ul>
-		<p>Each implementation technique has advantages and disadvantages. We went so far 
-			as to run various timings of the direct and indirect approaches, and found that 
-			at least on Intel Pentium chips there was very little measurable difference. 
-			Kevlin Henney provided a paper he wrote on "Counted Body Techniques." Dietmar 
-			K<EFBFBD>hl suggested an elegant partial template specialization technique to allow 
-			users to choose which implementation they preferred, and that was also 
+		<p>Each implementation technique has advantages and disadvantages. We went so far
+			as to run various timings of the direct and indirect approaches, and found that
+			at least on Intel Pentium chips there was very little measurable difference.
+			Kevlin Henney provided a paper he wrote on "Counted Body Techniques." Dietmar
+			K&uuml;hl suggested an elegant partial template specialization technique to allow
+			users to choose which implementation they preferred, and that was also
 			experimented with.</p>
-		<p>But Greg Colvin and Jerry Schwarz argued that "parameterization will discourage 
+		<p>But Greg Colvin and Jerry Schwarz argued that "parameterization will discourage
 			users", and in the end we choose to supply only the direct implementation.</p>
 		<p>Summer, 1994. Greg Colvin proposed to the C++ Standards Committee classes named <b>auto_ptr</b>
 			and <b>counted_ptr</b> which were very similar to what we now call <b>scoped_ptr</b>
-			and <b>shared_ptr</b>. <a href="#Col-94">[Col-94]</a> In one of the very few 
-			cases where the Library Working Group's recommendations were not followed by 
-			the full committee, <b>counted_ptr</b> was rejected and surprising 
+			and <b>shared_ptr</b>. <a href="#Col-94">[Col-94]</a> In one of the very few
+			cases where the Library Working Group's recommendations were not followed by
+			the full committee, <b>counted_ptr</b> was rejected and surprising
 			transfer-of-ownership semantics were added to <b>auto_ptr</b>.</p>
 		<h2><a name="References">References</a></h2>
 		<p>[<a name="Col-94">Col-94</a>] Gregory Colvin, <a href="http://std.dkuug.dk/jtc1/sc22/wg21/docs/papers/1994/N0555.pdf">
-				Exception Safe Smart Pointers</a>, C++ committee document 94-168/N0555, 
+				Exception Safe Smart Pointers</a>, C++ committee document 94-168/N0555,
 			July, 1994.</p>
 		<p>[<a name="E&amp;D-94">E&amp;D-94</a>] John R. Ellis &amp; David L. Detlefs, <a href="http://www.usenix.org/publications/library/proceedings/c++94/full_papers/ellis.a">
-				Safe, Efficient Garbage Collection for C++</a>, Usenix Proceedings, 
-			February, 1994. This paper includes an extensive discussion of weak pointers 
+				Safe, Efficient Garbage Collection for C++</a>, Usenix Proceedings,
+			February, 1994. This paper includes an extensive discussion of weak pointers
 			and an extensive bibliography.</p>
 		<hr>
 		<p>$Date$</p>
-		<p><small>Copyright 1999 Greg Colvin and Beman Dawes. Copyright 2002 Darin Adler. 
+		<p><small>Copyright 1999 Greg Colvin and Beman Dawes. 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>

src/sp_collector.cpp

@@ -104,6 +104,8 @@ static void find_unreachable_objects_impl(map_type const & m, map2_type & m2)
 
             BOOST_ASSERT(p->use_count() != 0); // there should be no inactive counts in the map
 
+            m2[ i->first ];
+
             scan_and_count(i->second.first, i->second.second, m, m2);
         }
 
@@ -121,7 +123,7 @@ static void find_unreachable_objects_impl(map_type const & m, map2_type & m2)
             if(p->use_count() != i->second) open.push_back(p);
         }
 
-        std::cout << "... " << m2.size() << " objects in open.\n";
+        std::cout << "... " << open.size() << " objects in open.\n";
 
         for(open_type::iterator j = open.begin(); j != open.end(); ++j)
         {

test/Jamfile.v2

@@ -16,9 +16,11 @@ import testing ;
           [ run shared_ptr_basic_test.cpp : : : <toolset>gcc:<cxxflags>-Wno-non-virtual-dtor ]
           [ run shared_ptr_test.cpp : : : <toolset>gcc:<cxxflags>-Wno-non-virtual-dtor ]
           [ run weak_ptr_test.cpp ]
+          [ run weak_ptr_move_test.cpp ]
           [ run shared_from_this_test.cpp : : : <toolset>gcc:<cxxflags>-Wno-non-virtual-dtor ]
           [ run get_deleter_test.cpp ]
           [ run intrusive_ptr_test.cpp ]
+          [ run intrusive_ptr_move_test.cpp ]
           [ run atomic_count_test.cpp ]
           [ run lw_mutex_test.cpp ]
           [ compile-fail shared_ptr_assign_fail.cpp ]
@@ -33,5 +35,31 @@ import testing ;
           [ run shared_ptr_move_test.cpp ]
           [ compile-fail shared_ptr_pv_fail.cpp ]
           [ run sp_unary_addr_test.cpp ]
+          [ compile-fail scoped_ptr_eq_fail.cpp ]
+          [ compile-fail scoped_array_eq_fail.cpp ]
+          [ run esft_regtest.cpp ]
+          [ run yield_k_test.cpp ]
+          [ run yield_k_test.cpp : : : <threading>multi : yield_k_test.mt ]
+          [ run spinlock_test.cpp ]
+          [ run spinlock_try_test.cpp ]
+          [ run spinlock_try_test.cpp : : : <threading>multi : spinlock_try_test.mt ]
+          [ run spinlock_pool_test.cpp ]
+          [ run make_shared_test.cpp ]
+          [ run sp_convertible_test.cpp ]
+          [ run wp_convertible_test.cpp ]
+          [ run ip_convertible_test.cpp ]
+          [ run allocate_shared_test.cpp ]
+          [ run sp_atomic_test.cpp ]
+          [ run esft_void_test.cpp ]
+          [ run esft_second_ptr_test.cpp ]
+          [ run make_shared_esft_test.cpp ]
+          [ run allocate_shared_esft_test.cpp ]
+          [ run sp_recursive_assign_test.cpp ]
+          [ run sp_recursive_assign2_test.cpp ]
+          [ run sp_recursive_assign_rv_test.cpp ]
+          [ run sp_recursive_assign2_rv_test.cpp ]
+          [ run esft_constructor_test.cpp ]
+          [ compile-fail auto_ptr_lv_fail.cpp ]
+          [ run atomic_count_test2.cpp ]
         ;
 }

test/allocate_shared_esft_test.cpp

@@ -0,0 +1,264 @@
+//  allocate_shared_esft_test.cpp
+//
+//  Copyright 2007-2009 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
+
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/make_shared.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/enable_shared_from_this.hpp>
+#include <memory>
+
+class X: public boost::enable_shared_from_this<X>
+{
+private:
+
+    X( X const & );
+    X & operator=( X const & );
+
+public:
+
+    static int instances;
+
+    explicit X( int = 0, int = 0, int = 0, int = 0, int = 0, int = 0, int = 0, int = 0, int = 0 )
+    {
+        ++instances;
+    }
+
+    ~X()
+    {
+        --instances;
+    }
+};
+
+int X::instances = 0;
+
+int main()
+{
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::allocate_shared< X >( std::allocator<void>() );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::allocate_shared< X >( std::allocator<void>(), 1 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::allocate_shared< X >( std::allocator<void>(), 1, 2 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5, 6 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5, 6, 7 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5, 6, 7, 8 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5, 6, 7, 8, 9 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    return boost::report_errors();
+}

test/allocate_shared_test.cpp

@@ -0,0 +1,204 @@
+// allocate_shared_test.cpp
+//
+// Copyright 2007-2009 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
+
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/make_shared.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+#include <cstddef>
+
+class X
+{
+private:
+
+    X( X const & );
+    X & operator=( X const & );
+
+    void * operator new( std::size_t n )
+    {
+        // lack of this definition causes link errors on Comeau C++
+        BOOST_ERROR( "private X::new called" );
+        return ::operator new( n );
+    }
+
+    void operator delete( void * p )
+    {
+        // lack of this definition causes link errors on MSVC
+        BOOST_ERROR( "private X::delete called" );
+        ::operator delete( p );
+    }
+
+public:
+
+    static int instances;
+
+    int v;
+
+    explicit X( int a1 = 0, int a2 = 0, int a3 = 0, int a4 = 0, int a5 = 0, int a6 = 0, int a7 = 0, int a8 = 0, int a9 = 0 ): v( a1+a2+a3+a4+a5+a6+a7+a8+a9 )
+    {
+        ++instances;
+    }
+
+    ~X()
+    {
+        --instances;
+    }
+};
+
+int X::instances = 0;
+
+int main()
+{
+    {
+        boost::shared_ptr< int > pi = boost::allocate_shared< int >( std::allocator<int>() );
+
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( *pi == 0 );
+    }
+
+    {
+        boost::shared_ptr< int > pi = boost::allocate_shared< int >( std::allocator<int>(), 5 );
+
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( *pi == 5 );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>() );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 0 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1, 2 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3+4 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3+4+5 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5, 6 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3+4+5+6 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5, 6, 7 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3+4+5+6+7 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5, 6, 7, 8 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3+4+5+6+7+8 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5, 6, 7, 8, 9 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3+4+5+6+7+8+9 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    return boost::report_errors();
+}

test/atomic_count_test2.cpp

@@ -0,0 +1,55 @@
+//
+// atomic_count_test2.cpp
+//
+// Copyright 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
+//
+
+#include <boost/detail/atomic_count.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+int main()
+{
+    boost::detail::atomic_count n( 4 );
+
+    BOOST_TEST( n == 4 );
+
+    BOOST_TEST( ++n == 5 );
+    BOOST_TEST( ++n == 6 );
+
+    BOOST_TEST( n == 6 );
+
+    BOOST_TEST( --n == 5 );
+    BOOST_TEST( --n == 4 );
+
+    BOOST_TEST( n == 4 );
+
+    boost::detail::atomic_count m( 0 );
+
+    BOOST_TEST( m == 0 );
+
+    BOOST_TEST( ++m == 1 );
+    BOOST_TEST( ++m == 2 );
+
+    BOOST_TEST( m == 2 );
+
+    BOOST_TEST( --m == 1 );
+    BOOST_TEST( --m == 0 );
+
+    BOOST_TEST( m == 0 );
+
+    BOOST_TEST( --m == -1 );
+    BOOST_TEST( --m == -2 );
+
+    BOOST_TEST( m == -2 );
+
+    BOOST_TEST( ++m == -1 );
+    BOOST_TEST( ++m == 0 );
+
+    BOOST_TEST( m == 0 );
+
+    return boost::report_errors();
+}

test/auto_ptr_lv_fail.cpp

@@ -0,0 +1,32 @@
+#include <boost/config.hpp>
+
+#if defined(BOOST_MSVC)
+#pragma warning(disable: 4786)  // identifier truncated in debug info
+#pragma warning(disable: 4710)  // function not inlined
+#pragma warning(disable: 4711)  // function selected for automatic inline expansion
+#pragma warning(disable: 4514)  // unreferenced inline removed
+#endif
+
+//
+//  auto_ptr_lv_fail.cpp - a negative test for converting an auto_ptr to shared_ptr
+//
+//  Copyright 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
+//
+
+#include <boost/shared_ptr.hpp>
+#include <memory>
+
+void f( boost::shared_ptr<int> )
+{
+}
+
+int main()
+{
+    std::auto_ptr<int> p;
+    f( p ); // must fail
+    return 0;
+}

test/esft_constructor_test.cpp

@@ -0,0 +1,169 @@
+//
+//  esft_constructor_test.cpp
+//
+//  A test for the new enable_shared_from_this support for calling
+//  shared_from_this from constructors (that is, prior to the
+//  object's ownership being passed to an external shared_ptr).
+//
+//  Copyright (c) 2008 Frank Mori Hess
+//  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/enable_shared_from_this2.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+#include <boost/detail/lightweight_test.hpp>
+#include <memory>
+
+class X: public boost::enable_shared_from_this2< X >
+{
+private:
+
+    int destroyed_;
+    int deleted_;
+    int expected_;
+
+private:
+
+    X( X const& );
+    X& operator=( X const& );
+
+public:
+
+    static int instances;
+
+public:
+
+    explicit X( int expected, boost::shared_ptr<X> *early_px = 0 ): destroyed_( 0 ), deleted_( 0 ), expected_( expected )
+    {
+        ++instances;
+        if( early_px ) *early_px = shared_from_this();
+    }
+
+    ~X()
+    {
+        BOOST_TEST( deleted_ == expected_ );
+        BOOST_TEST( destroyed_ == 0 );
+        ++destroyed_;
+        --instances;
+    }
+
+    typedef void (*deleter_type)( X* );
+
+    static void deleter( X * px )
+    {
+        ++px->deleted_;
+    }
+
+    static void deleter2( X * px )
+    {
+        ++px->deleted_;
+        delete px;
+    }
+};
+
+int X::instances = 0;
+
+template<typename T, typename U>
+bool are_shared_owners(const boost::shared_ptr<T> &a, const boost::shared_ptr<U> &b)
+{
+    return !(a < b) && !(b < a);
+}
+
+struct Y: public boost::enable_shared_from_this2<Y>
+{};
+
+int main()
+{
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr<X> early_px;
+        X* x = new X( 1, &early_px );
+        BOOST_TEST( early_px.use_count() > 0 );
+        BOOST_TEST( boost::get_deleter<X::deleter_type>(early_px) == 0 );
+        boost::shared_ptr<X> px( x, &X::deleter2 );
+        BOOST_TEST( early_px.use_count() == 2 && px.use_count() == 2 );
+        BOOST_TEST(are_shared_owners(early_px, px));
+        px.reset();
+        BOOST_TEST( early_px.use_count() == 1 );
+        BOOST_TEST( X::instances == 1 );
+        // X::deleter_type *pd = boost::get_deleter<X::deleter_type>(early_px);
+        // BOOST_TEST(pd && *pd == &X::deleter2 );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr<X> early_px;
+        X* x = new X( 1, &early_px );
+        boost::weak_ptr<X> early_weak_px = early_px;
+        early_px.reset();
+        BOOST_TEST( !early_weak_px.expired() );
+        boost::shared_ptr<X> px( x, &X::deleter2 );
+        BOOST_TEST( px.use_count() == 1 );
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST(are_shared_owners(early_weak_px.lock(), px));
+        px.reset();
+        BOOST_TEST( early_weak_px.expired() );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr<X> early_px;
+        X x( 1, &early_px );
+        BOOST_TEST( early_px.use_count() > 0 );
+        boost::shared_ptr<X> px( &x, &X::deleter );
+        BOOST_TEST( early_px.use_count() == 2 && px.use_count() == 2 );
+        early_px.reset();
+        BOOST_TEST( px.use_count() == 1 );
+        BOOST_TEST( X::instances == 1 );
+        px.reset();
+        try
+        {
+            x.shared_from_this();
+            BOOST_ERROR("x did not throw bad_weak_ptr");
+        }
+        catch( const boost::bad_weak_ptr & )
+        {}
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::weak_ptr<X> early_weak_px;
+        {
+            boost::shared_ptr<X> early_px;
+            X x( 0, &early_px );
+            early_weak_px = early_px;
+            early_px.reset();
+            BOOST_TEST( !early_weak_px.expired() );
+            BOOST_TEST( X::instances == 1 );
+        }
+        BOOST_TEST( early_weak_px.expired() );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr<Y> px(new Y());
+        Y y(*px);
+        px.reset();
+        try
+        {
+            y.shared_from_this();
+        }
+        catch( const boost::bad_weak_ptr & )
+        {
+            BOOST_ERROR("y threw bad_weak_ptr");
+        }
+    }
+    
+    return boost::report_errors();
+}

test/esft_regtest.cpp

@@ -0,0 +1,221 @@
+//
+//  esft_regtest.cpp
+//
+//  A regression test for enable_shared_from_this
+//
+//  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/enable_shared_from_this.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+#include <boost/detail/lightweight_test.hpp>
+#include <memory>
+#include <string>
+
+class X: public boost::enable_shared_from_this< X >
+{
+private:
+
+    int destroyed_;
+    int deleted_;
+    int expected_;
+
+private:
+
+    X( X const& );
+    X& operator=( X const& );
+
+public:
+
+    static int instances;
+
+public:
+
+    explicit X( int expected ): destroyed_( 0 ), deleted_( 0 ), expected_( expected )
+    {
+        ++instances;
+    }
+
+    ~X()
+    {
+        BOOST_TEST( deleted_ == expected_ );
+        BOOST_TEST( destroyed_ == 0 );
+        ++destroyed_;
+        --instances;
+    }
+
+    typedef void (*deleter_type)( X* );
+
+    static void deleter( X * px )
+    {
+        ++px->deleted_;
+    }
+
+    static void deleter2( X * px )
+    {
+        ++px->deleted_;
+        delete px;
+    }
+};
+
+int X::instances = 0;
+
+void test()
+{
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        X x( 0 );
+        BOOST_TEST( X::instances == 1 );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        std::auto_ptr<X> px( new X( 0 ) );
+        BOOST_TEST( X::instances == 1 );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr<X> px( new X( 0 ) );
+        BOOST_TEST( X::instances == 1 );
+
+        boost::weak_ptr<X> wp( px );
+        BOOST_TEST( !wp.expired() );
+
+        px.reset();
+
+        BOOST_TEST( wp.expired() );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        X x( 1 );
+        boost::shared_ptr<X> px( &x, X::deleter );
+        BOOST_TEST( X::instances == 1 );
+
+        X::deleter_type * pd = boost::get_deleter<X::deleter_type>( px );
+        BOOST_TEST( pd != 0 && *pd == X::deleter );
+
+        boost::weak_ptr<X> wp( px );
+        BOOST_TEST( !wp.expired() );
+
+        px.reset();
+
+        BOOST_TEST( wp.expired() );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr<X> px( new X( 1 ), X::deleter2 );
+        BOOST_TEST( X::instances == 1 );
+
+        X::deleter_type * pd = boost::get_deleter<X::deleter_type>( px );
+        BOOST_TEST( pd != 0 && *pd == X::deleter2 );
+
+        boost::weak_ptr<X> wp( px );
+        BOOST_TEST( !wp.expired() );
+
+        px.reset();
+
+        BOOST_TEST( wp.expired() );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+}
+
+struct V: public boost::enable_shared_from_this<V>
+{
+    virtual ~V() {}
+    std::string m_;
+};
+
+struct V2
+{
+    virtual ~V2() {}
+    std::string m2_;
+};
+
+struct W: V2, V
+{
+};
+
+void test2()
+{
+    boost::shared_ptr<W> p( new W );
+}
+
+void test3()
+{
+    V * p = new W;
+    boost::shared_ptr<void> pv( p );
+    BOOST_TEST( pv.get() == p );
+    BOOST_TEST( pv.use_count() == 1 );
+}
+
+struct null_deleter
+{
+    void operator()( void const* ) const {}
+};
+
+void test4()
+{
+    boost::shared_ptr<V> pv( new V );
+    boost::shared_ptr<V> pv2( pv.get(), null_deleter() );
+    BOOST_TEST( pv2.get() == pv.get() );
+    BOOST_TEST( pv2.use_count() == 1 );
+}
+
+void test5()
+{
+    V v;
+
+    boost::shared_ptr<V> p1( &v, null_deleter() );
+    BOOST_TEST( p1.get() == &v );
+    BOOST_TEST( p1.use_count() == 1 );
+
+    try
+    {
+        p1->shared_from_this();
+    }
+    catch( ... )
+    {
+        BOOST_ERROR( "p1->shared_from_this() failed" );
+    }
+
+    p1.reset();
+
+    boost::shared_ptr<V> p2( &v, null_deleter() );
+    BOOST_TEST( p2.get() == &v );
+    BOOST_TEST( p2.use_count() == 1 );
+
+    try
+    {
+        p2->shared_from_this();
+    }
+    catch( ... )
+    {
+        BOOST_ERROR( "p2->shared_from_this() failed" );
+    }
+}
+
+int main()
+{
+    test();
+    test2();
+    test3();
+    test4();
+    test5();
+
+    return boost::report_errors();
+}

test/esft_second_ptr_test.cpp

@@ -0,0 +1,51 @@
+//
+//  esft_second_ptr_test.cpp
+//
+//  This test has been extracted from a real
+//  scenario that occurs in Boost.Python
+//
+//  Copyright 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
+//
+
+
+#include <boost/enable_shared_from_this.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+//
+
+class X: public boost::enable_shared_from_this<X>
+{
+};
+
+void null_deleter( void const* )
+{
+}
+
+int main()
+{
+    boost::shared_ptr<X> px( new X );
+
+    {
+        boost::shared_ptr<X> px2( px.get(), null_deleter );
+        BOOST_TEST( px == px2 );
+    }
+
+    try
+    {
+        boost::shared_ptr< X > qx = px->shared_from_this();
+
+        BOOST_TEST( px == qx );
+        BOOST_TEST( !( px < qx ) && !( qx < px ) );
+    }
+    catch( boost::bad_weak_ptr const& )
+    {
+        BOOST_ERROR( "px->shared_from_this() failed" );
+    }
+
+    return boost::report_errors();
+}

test/esft_void_test.cpp

@@ -0,0 +1,41 @@
+//
+//  esft_void_test.cpp
+//
+//  Copyright 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
+//
+
+
+#include <boost/enable_shared_from_this.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+//
+
+class X: public boost::enable_shared_from_this<X>
+{
+};
+
+int main()
+{
+    boost::shared_ptr< void const volatile > pv( new X );
+    boost::shared_ptr< void > pv2 = boost::const_pointer_cast< void >( pv );
+    boost::shared_ptr< X > px = boost::static_pointer_cast< X >( pv2 );
+
+    try
+    {
+        boost::shared_ptr< X > qx = px->shared_from_this();
+
+        BOOST_TEST( px == qx );
+        BOOST_TEST( !( px < qx ) && !( qx < px ) );
+    }
+    catch( boost::bad_weak_ptr const& )
+    {
+        BOOST_ERROR( "px->shared_from_this() failed" );
+    }
+
+    return boost::report_errors();
+}

test/intrusive_ptr_move_test.cpp

@@ -0,0 +1,184 @@
+#include <boost/config.hpp>
+
+#if defined(BOOST_MSVC)
+
+#pragma warning(disable: 4786)  // identifier truncated in debug info
+#pragma warning(disable: 4710)  // function not inlined
+#pragma warning(disable: 4711)  // function selected for automatic inline expansion
+#pragma warning(disable: 4514)  // unreferenced inline removed
+#pragma warning(disable: 4355)  // 'this' : used in base member initializer list
+#pragma warning(disable: 4511)  // copy constructor could not be generated
+#pragma warning(disable: 4512)  // assignment operator could not be generated
+
+#if (BOOST_MSVC >= 1310)
+#pragma warning(disable: 4675)  // resolved overload found with Koenig lookup
+#endif
+
+#endif
+
+//
+//  intrusive_ptr_move_test.cpp
+//
+//  Copyright (c) 2002-2005 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/lightweight_test.hpp>
+#include <boost/intrusive_ptr.hpp>
+#include <boost/detail/atomic_count.hpp>
+#include <boost/config.hpp>
+#include <algorithm>
+#include <functional>
+
+#if defined( BOOST_HAS_RVALUE_REFS )
+
+namespace N
+{
+
+class base
+{
+private:
+
+    boost::detail::atomic_count use_count_;
+
+    base(base const &);
+    base & operator=(base const &);
+
+protected:
+
+    base(): use_count_(0)
+    {
+        ++instances;
+    }
+
+    virtual ~base()
+    {
+        --instances;
+    }
+
+public:
+
+    static long instances;
+
+    long use_count() const
+    {
+        return use_count_;
+    }
+
+#if !defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
+
+    inline friend void intrusive_ptr_add_ref(base * p)
+    {
+        ++p->use_count_;
+    }
+
+    inline friend void intrusive_ptr_release(base * p)
+    {
+        if(--p->use_count_ == 0) delete p;
+    }
+
+#else
+
+    void add_ref()
+    {
+        ++use_count_;
+    }
+
+    void release()
+    {
+        if(--use_count_ == 0) delete this;
+    }
+
+#endif
+};
+
+long base::instances = 0;
+
+} // namespace N
+
+#if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
+
+namespace boost
+{
+
+inline void intrusive_ptr_add_ref(N::base * p)
+{
+    p->add_ref();
+}
+
+inline void intrusive_ptr_release(N::base * p)
+{
+    p->release();
+}
+
+} // namespace boost
+
+#endif
+
+//
+
+struct X: public virtual N::base
+{
+};
+
+struct Y: public X
+{
+};
+
+int main()
+{
+    BOOST_TEST( N::base::instances == 0 );
+
+    {
+        boost::intrusive_ptr<X> p( new X );
+        BOOST_TEST( N::base::instances == 1 );
+
+        boost::intrusive_ptr<X> p2( std::move( p ) );
+        BOOST_TEST( N::base::instances == 1 );
+        BOOST_TEST( p.get() == 0 );
+
+        p2.reset();
+        BOOST_TEST( N::base::instances == 0 );
+    }
+
+    {
+        boost::intrusive_ptr<X> p( new X );
+        BOOST_TEST( N::base::instances == 1 );
+
+        boost::intrusive_ptr<X> p2;
+        p2 = std::move( p );
+        BOOST_TEST( N::base::instances == 1 );
+        BOOST_TEST( p.get() == 0 );
+
+        p2.reset();
+        BOOST_TEST( N::base::instances == 0 );
+    }
+
+    {
+        boost::intrusive_ptr<X> p( new X );
+        BOOST_TEST( N::base::instances == 1 );
+
+        boost::intrusive_ptr<X> p2( new X );
+        BOOST_TEST( N::base::instances == 2 );
+        p2 = std::move( p );
+        BOOST_TEST( N::base::instances == 1 );
+        BOOST_TEST( p.get() == 0 );
+
+        p2.reset();
+        BOOST_TEST( N::base::instances == 0 );
+    }
+
+    return boost::report_errors();
+}
+
+#else // !defined( BOOST_HAS_RVALUE_REFS )
+
+int main()
+{
+    return 0;
+}
+
+#endif

test/ip_convertible_test.cpp

@@ -0,0 +1,54 @@
+#include <boost/config.hpp>
+
+//  wp_convertible_test.cpp
+//
+//  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/lightweight_test.hpp>
+#include <boost/intrusive_ptr.hpp>
+
+//
+
+struct W
+{
+};
+
+void intrusive_ptr_add_ref( W* )
+{
+}
+
+void intrusive_ptr_release( W* )
+{
+}
+
+struct X: public virtual W
+{
+};
+
+struct Y: public virtual W
+{
+};
+
+struct Z: public X
+{
+};
+
+int f( boost::intrusive_ptr<X> )
+{
+    return 1;
+}
+
+int f( boost::intrusive_ptr<Y> )
+{
+    return 2;
+}
+
+int main()
+{
+    BOOST_TEST( 1 == f( boost::intrusive_ptr<Z>() ) );
+    return boost::report_errors();
+}

test/make_shared_esft_test.cpp

@@ -0,0 +1,263 @@
+//  make_shared_esft_test.cpp
+//
+//  Copyright 2007-2009 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
+
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/make_shared.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/enable_shared_from_this.hpp>
+
+class X: public boost::enable_shared_from_this<X>
+{
+private:
+
+    X( X const & );
+    X & operator=( X const & );
+
+public:
+
+    static int instances;
+
+    explicit X( int = 0, int = 0, int = 0, int = 0, int = 0, int = 0, int = 0, int = 0, int = 0 )
+    {
+        ++instances;
+    }
+
+    ~X()
+    {
+        --instances;
+    }
+};
+
+int X::instances = 0;
+
+int main()
+{
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::make_shared< X >();
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::make_shared< X >( 1 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::make_shared< X >( 1, 2 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::make_shared< X >( 1, 2, 3 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::make_shared< X >( 1, 2, 3, 4 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::make_shared< X >( 1, 2, 3, 4, 5 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::make_shared< X >( 1, 2, 3, 4, 5, 6 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::make_shared< X >( 1, 2, 3, 4, 5, 6, 7 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::make_shared< X >( 1, 2, 3, 4, 5, 6, 7, 8 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > px = boost::make_shared< X >( 1, 2, 3, 4, 5, 6, 7, 8, 9 );
+        BOOST_TEST( X::instances == 1 );
+
+        try
+        {
+            boost::shared_ptr< X > qx = px->shared_from_this();
+
+            BOOST_TEST( px == qx );
+            BOOST_TEST( !( px < qx ) && !( qx < px ) );
+
+            px.reset();
+            BOOST_TEST( X::instances == 1 );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+            BOOST_ERROR( "px->shared_from_this() failed" );
+        }
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    return boost::report_errors();
+}

test/make_shared_test.cpp

@@ -0,0 +1,204 @@
+// make_shared_test.cpp
+//
+// Copyright 2007-2009 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
+
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/make_shared.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+#include <cstddef>
+
+class X
+{
+private:
+
+    X( X const & );
+    X & operator=( X const & );
+
+    void * operator new( std::size_t n )
+    {
+        // lack of this definition causes link errors on Comeau C++
+        BOOST_ERROR( "private X::new called" );
+        return ::operator new( n );
+    }
+
+    void operator delete( void * p )
+    {
+        // lack of this definition causes link errors on MSVC
+        BOOST_ERROR( "private X::delete called" );
+        ::operator delete( p );
+    }
+
+public:
+
+    static int instances;
+
+    int v;
+
+    explicit X( int a1 = 0, int a2 = 0, int a3 = 0, int a4 = 0, int a5 = 0, int a6 = 0, int a7 = 0, int a8 = 0, int a9 = 0 ): v( a1+a2+a3+a4+a5+a6+a7+a8+a9 )
+    {
+        ++instances;
+    }
+
+    ~X()
+    {
+        --instances;
+    }
+};
+
+int X::instances = 0;
+
+int main()
+{
+    {
+        boost::shared_ptr< int > pi = boost::make_shared< int >();
+
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( *pi == 0 );
+    }
+
+    {
+        boost::shared_ptr< int > pi = boost::make_shared< int >( 5 );
+
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( *pi == 5 );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr< X > pi = boost::make_shared< X >();
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 0 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::make_shared< X >( 1 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::make_shared< X >( 1, 2 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::make_shared< X >( 1, 2, 3 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::make_shared< X >( 1, 2, 3, 4 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3+4 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::make_shared< X >( 1, 2, 3, 4, 5 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3+4+5 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::make_shared< X >( 1, 2, 3, 4, 5, 6 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3+4+5+6 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::make_shared< X >( 1, 2, 3, 4, 5, 6, 7 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3+4+5+6+7 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::make_shared< X >( 1, 2, 3, 4, 5, 6, 7, 8 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3+4+5+6+7+8 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        boost::shared_ptr< X > pi = boost::make_shared< X >( 1, 2, 3, 4, 5, 6, 7, 8, 9 );
+        boost::weak_ptr<X> wp( pi );
+
+        BOOST_TEST( X::instances == 1 );
+        BOOST_TEST( pi.get() != 0 );
+        BOOST_TEST( pi->v == 1+2+3+4+5+6+7+8+9 );
+
+        pi.reset();
+
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    return boost::report_errors();
+}

test/pointer_cast_test.cpp

@@ -1,7 +1,7 @@
 //
 //  pointer_cast_test.cpp - a test for boost/pointer_cast.hpp
 //
-//  Copyright (c) 2005 Ion Gazta<EFBFBD>aga
+//  Copyright (c) 2005 Ion Gaztanaga
 //  Copyright (c) 2005 Peter Dimov
 //
 // Distributed under the Boost Software License, Version 1.0. (See

test/scoped_array_eq_fail.cpp

@@ -0,0 +1,27 @@
+#include <boost/config.hpp>
+
+#if defined(BOOST_MSVC)
+#pragma warning(disable: 4786)  // identifier truncated in debug info
+#pragma warning(disable: 4710)  // function not inlined
+#pragma warning(disable: 4711)  // function selected for automatic inline expansion
+#pragma warning(disable: 4514)  // unreferenced inline removed
+#endif
+
+//
+// scoped_array_eq_fail.cpp - a negative test for "p == q"
+//
+// 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/scoped_array.hpp>
+
+int main()
+{
+    boost::scoped_array<int> p, q;
+    p == q; // must fail
+    return 0;
+}

test/scoped_ptr_eq_fail.cpp

@@ -0,0 +1,27 @@
+#include <boost/config.hpp>
+
+#if defined(BOOST_MSVC)
+#pragma warning(disable: 4786)  // identifier truncated in debug info
+#pragma warning(disable: 4710)  // function not inlined
+#pragma warning(disable: 4711)  // function selected for automatic inline expansion
+#pragma warning(disable: 4514)  // unreferenced inline removed
+#endif
+
+//
+// scoped_ptr_eq_fail.cpp - a negative test for "p == q"
+//
+// 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/scoped_ptr.hpp>
+
+int main()
+{
+    boost::scoped_ptr<int> p, q;
+    p == q; // must fail
+    return 0;
+}

test/shared_from_this_test.cpp

@@ -55,16 +55,23 @@ void test()
     BOOST_TEST(py.get() != 0);
     BOOST_TEST(py.use_count() == 1);
 
-    boost::shared_ptr<X> px = py->getX();
-    BOOST_TEST(px.get() != 0);
-    BOOST_TEST(py.use_count() == 2);
+    try
+    {
+        boost::shared_ptr<X> px = py->getX();
+        BOOST_TEST(px.get() != 0);
+        BOOST_TEST(py.use_count() == 2);
 
-    px->f();
+        px->f();
 
-    boost::shared_ptr<Y> py2 = boost::dynamic_pointer_cast<Y>(px);
-    BOOST_TEST(py.get() == py2.get());
-    BOOST_TEST(!(py < py2 || py2 < py));
-    BOOST_TEST(py.use_count() == 3);
+        boost::shared_ptr<Y> py2 = boost::dynamic_pointer_cast<Y>(px);
+        BOOST_TEST(py.get() == py2.get());
+        BOOST_TEST(!(py < py2 || py2 < py));
+        BOOST_TEST(py.use_count() == 3);
+    }
+    catch( boost::bad_weak_ptr const& )
+    {
+        BOOST_ERROR( "py->getX() failed" );
+    }
 }
 
 void test2();
@@ -124,9 +131,16 @@ void test3()
 {
     boost::shared_ptr<V> p(new V);
 
-    boost::shared_ptr<V> q = p->shared_from_this();
-    BOOST_TEST(p == q);
-    BOOST_TEST(!(p < q) && !(q < p));
+    try
+    {
+        boost::shared_ptr<V> q = p->shared_from_this();
+        BOOST_TEST(p == q);
+        BOOST_TEST(!(p < q) && !(q < p));
+    }
+    catch( boost::bad_weak_ptr const & )
+    {
+        BOOST_ERROR( "p->shared_from_this() failed" );
+    }
 
     V v2(*p);
 
@@ -135,7 +149,7 @@ void test3()
         boost::shared_ptr<V> r = v2.shared_from_this();
         BOOST_ERROR("v2.shared_from_this() failed to throw");
     }
-    catch(boost::bad_weak_ptr const &)
+    catch( boost::bad_weak_ptr const & )
     {
     }
 
@@ -146,7 +160,7 @@ void test3()
         BOOST_TEST(p == r);
         BOOST_TEST(!(p < r) && !(r < p));
     }
-    catch(boost::bad_weak_ptr const &)
+    catch( boost::bad_weak_ptr const & )
     {
         BOOST_ERROR("p->shared_from_this() threw bad_weak_ptr after *p = V()");
     }

test/shared_ptr_move_test.cpp

@@ -11,6 +11,8 @@
 #include <boost/shared_ptr.hpp>
 #include <boost/detail/lightweight_test.hpp>
 
+#if defined( BOOST_HAS_RVALUE_REFS )
+
 struct X
 {
     static long instances;
@@ -41,11 +43,11 @@ int main()
         boost::shared_ptr<X> p( new X );
         BOOST_TEST( X::instances == 1 );
 
-        boost::shared_ptr<X> p2( static_cast< boost::shared_ptr<X> && >( p ) );
+        boost::shared_ptr<X> p2( std::move( p ) );
         BOOST_TEST( X::instances == 1 );
         BOOST_TEST( p.get() == 0 );
 
-        boost::shared_ptr<void> p3( static_cast< boost::shared_ptr<X> && >( p2 ) );
+        boost::shared_ptr<void> p3( std::move( p2 ) );
         BOOST_TEST( X::instances == 1 );
         BOOST_TEST( p2.get() == 0 );
 
@@ -58,12 +60,12 @@ int main()
         BOOST_TEST( X::instances == 1 );
 
         boost::shared_ptr<X> p2;
-        p2 = static_cast< boost::shared_ptr<X> && >( p );
+        p2 = std::move( p );
         BOOST_TEST( X::instances == 1 );
         BOOST_TEST( p.get() == 0 );
 
         boost::shared_ptr<void> p3;
-        p3 = static_cast< boost::shared_ptr<X> && >( p2 );
+        p3 = std::move( p2 );
         BOOST_TEST( X::instances == 1 );
         BOOST_TEST( p2.get() == 0 );
 
@@ -77,13 +79,13 @@ int main()
 
         boost::shared_ptr<X> p2( new X );
         BOOST_TEST( X::instances == 2 );
-        p2 = static_cast< boost::shared_ptr<X> && >( p );
+        p2 = std::move( p );
         BOOST_TEST( X::instances == 1 );
         BOOST_TEST( p.get() == 0 );
 
         boost::shared_ptr<void> p3( new X );
         BOOST_TEST( X::instances == 2 );
-        p3 = static_cast< boost::shared_ptr<X> && >( p2 );
+        p3 = std::move( p2 );
         BOOST_TEST( X::instances == 1 );
         BOOST_TEST( p2.get() == 0 );
 
@@ -93,3 +95,12 @@ int main()
 
     return boost::report_errors();
 }
+
+#else // !defined( BOOST_HAS_RVALUE_REFS )
+
+int main()
+{
+    return 0;
+}
+
+#endif

test/shared_ptr_mt_test.cpp

@@ -7,167 +7,76 @@
 #pragma warning(disable: 4514)  // unreferenced inline removed
 #endif
 
-//
 //  shared_ptr_mt_test.cpp - tests shared_ptr with multiple threads
 //
 //  Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
+//  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)
-//
+//  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/shared_ptr.hpp>
 #include <boost/bind.hpp>
 
 #include <vector>
-#include <memory>
-#include <stdexcept>
 
 #include <cstdio>
 #include <ctime>
 
-// 'portable' thread framework
-
-class abstract_thread
-{
-public:
-
-    virtual ~abstract_thread() {}
-    virtual void run() = 0;
-};
-
-#if !defined(BOOST_HAS_PTHREADS) && defined(BOOST_HAS_WINTHREADS)
-
-char const * title = "Using Windows threads";
-
-#include <windows.h>
-#include <process.h>
-
-typedef HANDLE pthread_t;
-
-unsigned __stdcall common_thread_routine(void * pv)
-{
-    abstract_thread * pt = static_cast<abstract_thread *>(pv);
-    pt->run();
-    delete pt;
-    return 0;
-}
-
-int pthread_create(pthread_t * thread, void const *, unsigned (__stdcall * start_routine) (void*), void* arg)
-{
-    HANDLE h = (HANDLE)_beginthreadex(0, 0, start_routine, arg, 0, 0);
-
-    if(h != 0)
-    {
-        *thread = h;
-        return 0;
-    }
-    else
-    {
-        return 1; // return errno;
-    }
-}
-
-int pthread_join(pthread_t thread, void ** /*value_ptr*/)
-{
-    ::WaitForSingleObject(thread, INFINITE);
-    ::CloseHandle(thread);
-    return 0;
-}
-
-#else
-
-char const * title = "Using POSIX threads";
-
-#include <pthread.h>
-
-extern "C" void * common_thread_routine(void * pv)
-{
-    abstract_thread * pt = static_cast<abstract_thread *>(pv);
-    pt->run();
-    delete pt;
-    return 0;
-}
-
-#endif
-
-//
-
-template<class F> class thread: public abstract_thread
-{
-public:
-
-    explicit thread(F f): f_(f)
-    {
-    }
-
-    void run()
-    {
-        f_();
-    }
-
-private:
-
-    F f_;
-};
-
-template<class F> pthread_t createThread(F f)
-{
-    std::auto_ptr<abstract_thread> p(new thread<F>(f));
-
-    pthread_t r;
-
-    if(pthread_create(&r, 0, common_thread_routine, p.get()) == 0)
-    {
-        p.release();
-        return r;
-    }
-
-    throw std::runtime_error("createThread failed.");
-}
+#include <boost/detail/lightweight_thread.hpp>
 
 //
 
 int const n = 1024 * 1024;
 
-void test(boost::shared_ptr<int> const & pi)
+void test( boost::shared_ptr<int> const & pi )
 {
     std::vector< boost::shared_ptr<int> > v;
 
-    for(int i = 0; i < n; ++i)
+    for( int i = 0; i < n; ++i )
     {
-        v.push_back(pi);
+        v.push_back( pi );
     }
 }
 
 int const m = 16; // threads
 
+#if defined( BOOST_HAS_PTHREADS )
+
+char const * thmodel = "POSIX";
+
+#else
+
+char const * thmodel = "Windows";
+
+#endif
+
 int main()
 {
     using namespace std; // printf, clock_t, clock
 
-    printf("%s: %d threads, %d iterations: ", title, m, n);
+    printf( "Using %s threads: %d threads, %d iterations: ", thmodel, m, n );
 
-    boost::shared_ptr<int> pi(new int(42));
+    boost::shared_ptr<int> pi( new int(42) );
 
     clock_t t = clock();
 
-    pthread_t a[m];
+    pthread_t a[ m ];
 
-    for(int i = 0; i < m; ++i)
+    for( int i = 0; i < m; ++i )
     {
-        a[i] = createThread( boost::bind(test, pi) );
+        boost::detail::lw_thread_create( a[ i ], boost::bind( test, pi ) );
     }
 
-    for(int j = 0; j < m; ++j)
+    for( int j = 0; j < m; ++j )
     {
-        pthread_join(a[j], 0);
+        pthread_join( a[j], 0 );
     }
 
     t = clock() - t;
 
-    printf("\n\n%.3f seconds.\n", static_cast<double>(t) / CLOCKS_PER_SEC);
+    printf( "\n\n%.3f seconds.\n", static_cast<double>(t) / CLOCKS_PER_SEC );
 
     return 0;
 }

test/shared_ptr_test.cpp

@@ -62,6 +62,7 @@ void default_constructor()
         BOOST_TEST(pi? false: true);
         BOOST_TEST(!pi);
         BOOST_TEST(pi.get() == 0);
+        BOOST_TEST(pi.use_count() == 0);
     }
 
     {
@@ -69,6 +70,7 @@ void default_constructor()
         BOOST_TEST(pv? false: true);
         BOOST_TEST(!pv);
         BOOST_TEST(pv.get() == 0);
+        BOOST_TEST(pv.use_count() == 0);
     }
 
     {
@@ -76,6 +78,7 @@ void default_constructor()
         BOOST_TEST(px? false: true);
         BOOST_TEST(!px);
         BOOST_TEST(px.get() == 0);
+        BOOST_TEST(px.use_count() == 0);
     }
 }
 
@@ -1565,6 +1568,7 @@ void plain_reset()
         BOOST_TEST(pi? false: true);
         BOOST_TEST(!pi);
         BOOST_TEST(pi.get() == 0);
+        BOOST_TEST(pi.use_count() == 0);
     }
 
     {
@@ -1573,6 +1577,7 @@ void plain_reset()
         BOOST_TEST(pi? false: true);
         BOOST_TEST(!pi);
         BOOST_TEST(pi.get() == 0);
+        BOOST_TEST(pi.use_count() == 0);
     }
 
     {
@@ -1581,6 +1586,7 @@ void plain_reset()
         BOOST_TEST(pi? false: true);
         BOOST_TEST(!pi);
         BOOST_TEST(pi.get() == 0);
+        BOOST_TEST(pi.use_count() == 0);
     }
 
     {
@@ -1589,6 +1595,7 @@ void plain_reset()
         BOOST_TEST(px? false: true);
         BOOST_TEST(!px);
         BOOST_TEST(px.get() == 0);
+        BOOST_TEST(px.use_count() == 0);
     }
 
     {
@@ -1597,6 +1604,7 @@ void plain_reset()
         BOOST_TEST(px? false: true);
         BOOST_TEST(!px);
         BOOST_TEST(px.get() == 0);
+        BOOST_TEST(px.use_count() == 0);
     }
 
     {
@@ -1605,6 +1613,7 @@ void plain_reset()
         BOOST_TEST(px? false: true);
         BOOST_TEST(!px);
         BOOST_TEST(px.get() == 0);
+        BOOST_TEST(px.use_count() == 0);
     }
 
     {
@@ -1615,6 +1624,7 @@ void plain_reset()
         BOOST_TEST(px? false: true);
         BOOST_TEST(!px);
         BOOST_TEST(px.get() == 0);
+        BOOST_TEST(px.use_count() == 0);
         BOOST_TEST(X::instances == 0);
     }
 
@@ -1624,6 +1634,7 @@ void plain_reset()
         BOOST_TEST(pv? false: true);
         BOOST_TEST(!pv);
         BOOST_TEST(pv.get() == 0);
+        BOOST_TEST(pv.use_count() == 0);
     }
 
     {
@@ -1634,6 +1645,7 @@ void plain_reset()
         BOOST_TEST(pv? false: true);
         BOOST_TEST(!pv);
         BOOST_TEST(pv.get() == 0);
+        BOOST_TEST(pv.use_count() == 0);
         BOOST_TEST(X::instances == 0);
     }
 }

test/smart_ptr_test.cpp

@@ -196,6 +196,10 @@ void test()
     BOOST_TEST( cp.use_count() == 3 );
     BOOST_TEST( *cp == 87654 );
 
+#if defined( BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP )
+    using boost::swap;
+#endif
+
     boost::shared_ptr<int> cp4;
     swap( cp2, cp4 );
     BOOST_TEST( cp4.use_count() == 3 );

test/sp_atomic_mt2_test.cpp

@@ -0,0 +1,247 @@
+
+// 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/config.hpp>
+
+#include <boost/shared_ptr.hpp>
+#include <boost/bind.hpp>
+
+#include <boost/thread/shared_mutex.hpp>
+#include <boost/thread/locks.hpp>
+
+#include <boost/detail/lightweight_mutex.hpp>
+#include <boost/detail/lightweight_thread.hpp>
+
+#include <vector>
+#include <numeric>
+#include <cstdio>
+#include <cstdlib>
+#include <cstddef>
+#include <ctime>
+
+//
+
+static void next_value( unsigned & v )
+{
+    v = v % 2? 3 * v + 1: v / 2;
+}
+
+struct X
+{
+    std::vector<unsigned> v_;
+
+    explicit X( std::size_t n ): v_( n )
+    {
+        for( std::size_t i = 0; i < n; ++i )
+        {
+            v_[ i ] = i;
+        }
+    }
+
+    unsigned get() const
+    {
+        return std::accumulate( v_.begin(), v_.end(), 0 );
+    }
+
+    void set()
+    {
+        std::for_each( v_.begin(), v_.end(), next_value );
+    }
+};
+
+static boost::shared_ptr<X> ps;
+
+static boost::detail::lightweight_mutex lm;
+static boost::shared_mutex rw;
+
+enum prim_type
+{
+    pt_mutex,
+    pt_rwlock,
+    pt_atomics
+};
+
+int read_access( prim_type pt )
+{
+    switch( pt )
+    {
+    case pt_mutex:
+        {
+            boost::detail::lightweight_mutex::scoped_lock lock( lm );
+            return ps->get();
+        }
+
+    case pt_rwlock:
+        {
+            boost::shared_lock<boost::shared_mutex> lock( rw );
+            return ps->get();
+        }
+
+    case pt_atomics:
+        {
+            boost::shared_ptr<X> p2 = boost::atomic_load( &ps );
+            return p2->get();
+        }
+    }
+}
+
+void write_access( prim_type pt )
+{
+    switch( pt )
+    {
+    case pt_mutex:
+        {
+            boost::detail::lightweight_mutex::scoped_lock lock( lm );
+            ps->set();
+        }
+        break;
+
+    case pt_rwlock:
+        {
+            boost::unique_lock<boost::shared_mutex> lock( rw );
+            ps->set();
+        }
+        break;
+
+    case pt_atomics:
+        {
+            boost::shared_ptr<X> p1 = boost::atomic_load( &ps );
+
+            for( ;; )
+            {
+                boost::shared_ptr<X> p2( new X( *p1 ) );
+                p2->set();
+
+                if( boost::atomic_compare_exchange( &ps, &p1, p2 ) ) break;
+            }
+        }
+        break;
+    }
+}
+
+void worker( int k, prim_type pt, int n, int r )
+{
+    ++r;
+
+    unsigned s = 0, nr = 0, nw = 0;
+
+    for( int i = 0; i < n; ++i )
+    {
+        if( i % r )
+        {
+            s += read_access( pt );
+            ++nr;
+        }
+        else
+        {
+            write_access( pt );
+            ++s;
+            ++nw;
+        }
+    }
+
+    printf( "Worker %2d: %u:%u, %10u\n", k, nr, nw, s );
+}
+
+#if defined( BOOST_HAS_PTHREADS )
+  char const * thmodel = "POSIX";
+#else
+  char const * thmodel = "Windows";
+#endif
+
+char const * pt_to_string( prim_type pt )
+{
+    switch( pt )
+    {
+    case pt_mutex:
+
+        return "mutex";
+
+    case pt_rwlock:
+
+        return "rwlock";
+
+    case pt_atomics:
+
+        return "atomics";
+    }
+}
+
+static void handle_pt_option( std::string const & opt, prim_type & pt, prim_type pt2 )
+{
+    if( opt == pt_to_string( pt2 ) )
+    {
+        pt = pt2;
+    }
+}
+
+static void handle_int_option( std::string const & opt, std::string const & prefix, int & k, int kmin, int kmax )
+{
+    if( opt.substr( 0, prefix.size() ) == prefix )
+    {
+        int v = atoi( opt.substr( prefix.size() ).c_str() );
+
+        if( v >= kmin && v <= kmax )
+        {
+            k = v;
+        }
+    }
+}
+
+int main( int ac, char const * av[] )
+{
+    using namespace std; // printf, clock_t, clock
+
+    int m = 4;          // threads
+    int n = 10000;      // vector size
+    int k = 1000000;    // iterations
+    int r = 100;        // read/write ratio, r:1
+
+    prim_type pt = pt_atomics;
+
+    for( int i = 1; i < ac; ++i )
+    {
+        handle_pt_option( av[i], pt, pt_mutex );
+        handle_pt_option( av[i], pt, pt_rwlock );
+        handle_pt_option( av[i], pt, pt_atomics );
+
+        handle_int_option( av[i], "n=", n, 1, INT_MAX );
+        handle_int_option( av[i], "size=", n, 1, INT_MAX );
+
+        handle_int_option( av[i], "k=", k, 1, INT_MAX );
+        handle_int_option( av[i], "iterations=", k, 1, INT_MAX );
+
+        handle_int_option( av[i], "m=", m, 1, INT_MAX );
+        handle_int_option( av[i], "threads=", m, 1, INT_MAX );
+
+        handle_int_option( av[i], "r=", r, 1, INT_MAX );
+        handle_int_option( av[i], "ratio=", r, 1, INT_MAX );
+    }
+
+    printf( "%s: threads=%d size=%d iterations=%d ratio=%d %s\n\n", thmodel, m, n, k, r, pt_to_string( pt ) );
+
+    ps.reset( new X( n ) );
+
+    clock_t t = clock();
+
+    std::vector<pthread_t> a( m );
+
+    for( int i = 0; i < m; ++i )
+    {
+        boost::detail::lw_thread_create( a[ i ], boost::bind( worker, i, pt, k, r ) );
+    }
+
+    for( int j = 0; j < m; ++j )
+    {
+        pthread_join( a[ j ], 0 );
+    }
+
+    t = clock() - t;
+
+    double ts = static_cast<double>( t ) / CLOCKS_PER_SEC;
+    printf( "%.3f seconds, %.3f accesses per microsecond.\n", ts, m * k / ts / 1e+6 );
+}

test/sp_atomic_mt_test.cpp

@@ -0,0 +1,191 @@
+
+// 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
+
+//#define USE_MUTEX
+//#define USE_RWLOCK
+
+#include <boost/config.hpp>
+
+#include <boost/shared_ptr.hpp>
+#include <boost/bind.hpp>
+
+#if defined( USE_RWLOCK )
+#include <boost/thread/shared_mutex.hpp>
+#include <boost/thread/locks.hpp>
+#endif
+
+#include <boost/detail/lightweight_mutex.hpp>
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/detail/lightweight_thread.hpp>
+
+#include <cstdio>
+#include <ctime>
+
+//
+
+int const n = 1024 * 1024;
+
+struct X
+{
+    int v_; // version
+
+    unsigned a_;
+    unsigned b_;
+
+    X(): v_( 0 ), a_( 1 ), b_( 1 )
+    {
+    }
+
+    int get() const
+    {
+        return a_ * 7 + b_ * 11;
+    }
+
+    void set()
+    {
+        int tmp = get();
+
+        b_ = a_;
+        a_ = tmp;
+
+        ++v_;
+    }
+};
+
+static boost::shared_ptr<X> ps( new X );
+
+static boost::detail::lightweight_mutex lm;
+
+#if defined( USE_RWLOCK )
+static boost::shared_mutex rw;
+#endif
+
+static int tr = 0;
+
+void reader( int r )
+{
+    int k = 0;
+    unsigned s = 0;
+
+    for( int i = 0; i < n; ++k )
+    {
+#if defined( USE_MUTEX )
+
+        boost::detail::lightweight_mutex::scoped_lock lock( lm );
+
+        s += ps->get();
+
+        BOOST_TEST( ps->v_ >= i );
+        i = ps->v_;
+
+#elif defined( USE_RWLOCK )
+
+        boost::shared_lock<boost::shared_mutex> lock( rw );
+
+        s += ps->get();
+
+        BOOST_TEST( ps->v_ >= i );
+        i = ps->v_;
+
+#else
+
+        boost::shared_ptr<X> p2 = boost::atomic_load( &ps );
+
+        s += p2->get();
+
+        BOOST_TEST( p2->v_ >= i );
+        i = p2->v_;
+
+#endif
+    }
+
+    printf( "Reader %d: %9d iterations (%6.3fx), %u\n", r, k, (double)k / n, s );
+
+    boost::detail::lightweight_mutex::scoped_lock lock( lm );
+    tr += k;
+}
+
+void writer()
+{
+    for( int i = 0; i < n; ++i )
+    {
+#if defined( USE_MUTEX )
+
+        boost::detail::lightweight_mutex::scoped_lock lock( lm );
+
+        BOOST_TEST( ps->v_ == i );
+        ps->set();
+
+#elif defined( USE_RWLOCK )
+
+        boost::unique_lock<boost::shared_mutex> lock( rw );
+
+        BOOST_TEST( ps->v_ == i );
+        ps->set();
+
+#else
+
+        boost::shared_ptr<X> p2( new X( *ps ) );
+
+        BOOST_TEST( p2->v_ == i );
+        p2->set();
+
+        boost::atomic_store( &ps, p2 );
+
+#endif
+    }
+}
+
+#if defined( BOOST_HAS_PTHREADS )
+  char const * thmodel = "POSIX";
+#else
+  char const * thmodel = "Windows";
+#endif
+
+int const mr = 8; // reader threads
+int const mw = 1; // writer thread
+
+#if defined( USE_MUTEX )
+  char const * prim = "mutex";
+#elif defined( USE_RWLOCK )
+  char const * prim = "rwlock";
+#else
+  char const * prim = "atomics";
+#endif
+
+int main()
+{
+    using namespace std; // printf, clock_t, clock
+
+    printf( "Using %s threads: %dR + %dW threads, %d iterations, %s\n\n", thmodel, mr, mw, n, prim );
+
+    clock_t t = clock();
+
+    pthread_t a[ mr+mw ];
+
+    for( int i = 0; i < mr; ++i )
+    {
+        boost::detail::lw_thread_create( a[ i ], boost::bind( reader, i ) );
+    }
+
+    for( int i = mr; i < mr+mw; ++i )
+    {
+        boost::detail::lw_thread_create( a[ i ], writer );
+    }
+
+    for( int j = 0; j < mr+mw; ++j )
+    {
+        pthread_join( a[ j ], 0 );
+    }
+
+    t = clock() - t;
+
+    double ts = static_cast<double>( t ) / CLOCKS_PER_SEC;
+    printf( "%.3f seconds, %.3f reads per microsecond.\n", ts, tr / ts / 1e+6 );
+
+    return boost::report_errors();
+}

test/sp_atomic_test.cpp

@@ -0,0 +1,87 @@
+#include <boost/config.hpp>
+
+//  sp_atomic_test.cpp
+//
+//  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/lightweight_test.hpp>
+#include <boost/shared_ptr.hpp>
+
+//
+
+struct X
+{
+};
+
+#define BOOST_TEST_SP_EQ( p, q ) BOOST_TEST( p == q && !( p < q ) && !( q < p ) )
+
+int main()
+{
+    boost::shared_ptr<X> px( new X );
+
+    {
+        boost::shared_ptr<X> p2 = boost::atomic_load( &px );
+        BOOST_TEST_SP_EQ( p2, px );
+
+        boost::shared_ptr<X> px2( new X );
+        boost::atomic_store( &px, px2 );
+        BOOST_TEST_SP_EQ( px, px2 );
+
+        p2 = boost::atomic_load( &px );
+        BOOST_TEST_SP_EQ( p2, px );
+        BOOST_TEST_SP_EQ( p2, px2 );
+
+        boost::shared_ptr<X> px3( new X );
+        boost::shared_ptr<X> p3 = boost::atomic_exchange( &px, px3 );
+        BOOST_TEST_SP_EQ( p3, px2 );
+        BOOST_TEST_SP_EQ( px, px3 );
+
+        boost::shared_ptr<X> px4( new X );
+        boost::shared_ptr<X> cmp;
+
+        bool r = boost::atomic_compare_exchange( &px, &cmp, px4 );
+        BOOST_TEST( !r );
+        BOOST_TEST_SP_EQ( px, px3 );
+        BOOST_TEST_SP_EQ( cmp, px3 );
+
+        r = boost::atomic_compare_exchange( &px, &cmp, px4 );
+        BOOST_TEST( r );
+        BOOST_TEST_SP_EQ( px, px4 );
+    }
+
+    //
+
+    px.reset();
+
+    {
+        boost::shared_ptr<X> p2 = boost::atomic_load_explicit( &px, boost::memory_order_acquire );
+        BOOST_TEST_SP_EQ( p2, px );
+
+        boost::shared_ptr<X> px2( new X );
+        boost::atomic_store_explicit( &px, px2, boost::memory_order_release );
+        BOOST_TEST_SP_EQ( px, px2 );
+
+        boost::shared_ptr<X> p3 = boost::atomic_exchange_explicit( &px, boost::shared_ptr<X>(), boost::memory_order_acq_rel );
+        BOOST_TEST_SP_EQ( p3, px2 );
+        BOOST_TEST_SP_EQ( px, p2 );
+
+        boost::shared_ptr<X> px4( new X );
+        boost::shared_ptr<X> cmp( px2 );
+
+        bool r = boost::atomic_compare_exchange_explicit( &px, &cmp, px4, boost::memory_order_acquire, boost::memory_order_relaxed );
+        BOOST_TEST( !r );
+        BOOST_TEST_SP_EQ( px, p2 );
+        BOOST_TEST_SP_EQ( cmp, p2 );
+
+        r = boost::atomic_compare_exchange_explicit( &px, &cmp, px4, boost::memory_order_release, boost::memory_order_acquire );
+        BOOST_TEST( r );
+        BOOST_TEST_SP_EQ( px, px4 );
+    }
+
+    return boost::report_errors();
+}

test/sp_convertible_test.cpp

@@ -0,0 +1,71 @@
+#include <boost/config.hpp>
+
+//  sp_convertible_test.cpp
+//
+//  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/lightweight_test.hpp>
+#include <boost/shared_ptr.hpp>
+
+//
+
+class incomplete;
+
+struct X
+{
+};
+
+struct Y
+{
+};
+
+struct Z: public X
+{
+};
+
+int f( boost::shared_ptr<void const> )
+{
+    return 1;
+}
+
+int f( boost::shared_ptr<int> )
+{
+    return 2;
+}
+
+int f( boost::shared_ptr<incomplete> )
+{
+    return 3;
+}
+
+int g( boost::shared_ptr<X> )
+{
+    return 4;
+}
+
+int g( boost::shared_ptr<Y> )
+{
+    return 5;
+}
+
+int g( boost::shared_ptr<incomplete> )
+{
+    return 6;
+}
+
+int main()
+{
+    boost::shared_ptr<double> p1;
+    BOOST_TEST( 1 == f( p1 ) );
+    BOOST_TEST( 1 == f( boost::shared_ptr<double>() ) );
+
+    boost::shared_ptr<Z> p2;
+    BOOST_TEST( 4 == g( p2 ) );
+    BOOST_TEST( 4 == g( boost::shared_ptr<Z>() ) );
+
+    return boost::report_errors();
+}

test/sp_recursive_assign2_rv_test.cpp

@@ -0,0 +1,114 @@
+//
+//  sp_recursive_assign2_rv_test.cpp
+//
+//  Copyright 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
+//
+
+
+#include <boost/shared_ptr.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+//
+
+class X
+{
+public:
+
+    static int instances;
+
+    X()
+    {
+        ++instances;
+    }
+
+    ~X()
+    {
+        --instances;
+    }
+
+private:
+
+    X( X const& );
+};
+
+int X::instances = 0;
+
+class Y
+{
+public:
+
+    static int instances;
+
+    Y()
+    {
+        ++instances;
+    }
+
+    ~Y()
+    {
+        --instances;
+    }
+
+private:
+
+    Y( Y const& );
+};
+
+int Y::instances = 0;
+
+static boost::shared_ptr<void> s_pv;
+
+class Z
+{
+public:
+
+    static int instances;
+
+    Z()
+    {
+        ++instances;
+    }
+
+    ~Z()
+    {
+        --instances;
+        s_pv = boost::shared_ptr<Y>( new Y );
+    }
+
+private:
+
+    Z( Z const& );
+};
+
+int Z::instances = 0;
+
+int main()
+{
+    BOOST_TEST( X::instances == 0 );
+    BOOST_TEST( Y::instances == 0 );
+    BOOST_TEST( Z::instances == 0 );
+
+    s_pv = boost::shared_ptr<Z>( new Z );
+
+    BOOST_TEST( X::instances == 0 );
+    BOOST_TEST( Y::instances == 0 );
+    BOOST_TEST( Z::instances == 1 );
+
+    s_pv = boost::shared_ptr<X>( new X );
+
+    BOOST_TEST( X::instances == 0 );
+    BOOST_TEST( Y::instances == 1 );
+    BOOST_TEST( Z::instances == 0 );
+
+    s_pv = boost::shared_ptr<Y>();
+
+    BOOST_TEST( X::instances == 0 );
+    BOOST_TEST( Y::instances == 0 );
+    BOOST_TEST( Z::instances == 0 );
+
+    return boost::report_errors();
+}

test/sp_recursive_assign2_test.cpp

@@ -0,0 +1,122 @@
+//
+//  sp_recursive_assign2_test.cpp
+//
+//  Copyright 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
+//
+
+
+#include <boost/shared_ptr.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+//
+
+class X
+{
+public:
+
+    static int instances;
+
+    X()
+    {
+        ++instances;
+    }
+
+    ~X()
+    {
+        --instances;
+    }
+
+private:
+
+    X( X const& );
+};
+
+int X::instances = 0;
+
+class Y
+{
+public:
+
+    static int instances;
+
+    Y()
+    {
+        ++instances;
+    }
+
+    ~Y()
+    {
+        --instances;
+    }
+
+private:
+
+    Y( Y const& );
+};
+
+int Y::instances = 0;
+
+static boost::shared_ptr<void> s_pv;
+
+class Z
+{
+public:
+
+    static int instances;
+
+    Z()
+    {
+        ++instances;
+    }
+
+    ~Z()
+    {
+        --instances;
+
+        boost::shared_ptr<Y> pv( new Y );
+        s_pv = pv;
+    }
+
+private:
+
+    Z( Z const& );
+};
+
+int Z::instances = 0;
+
+int main()
+{
+    BOOST_TEST( X::instances == 0 );
+    BOOST_TEST( Y::instances == 0 );
+    BOOST_TEST( Z::instances == 0 );
+
+    {
+        boost::shared_ptr<Z> pv( new Z );
+        s_pv = pv;
+    }
+
+    BOOST_TEST( X::instances == 0 );
+    BOOST_TEST( Y::instances == 0 );
+    BOOST_TEST( Z::instances == 1 );
+
+    {
+        boost::shared_ptr<X> pv( new X );
+        s_pv = pv;
+    }
+
+    BOOST_TEST( X::instances == 0 );
+    BOOST_TEST( Y::instances == 1 );
+    BOOST_TEST( Z::instances == 0 );
+
+    s_pv.reset();
+
+    BOOST_TEST( X::instances == 0 );
+    BOOST_TEST( Y::instances == 0 );
+    BOOST_TEST( Z::instances == 0 );
+
+    return boost::report_errors();
+}