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Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
2008-06-28 18:29:40 +00:00
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minor documentation update [SVN r47493]
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<title>transporting of exceptions between threads</title>
Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
2008-06-28 18:29:40 +00:00
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Merge in inspect checks for links in CSS files and external content. And fix a few of these issues. Merged revisions 52663-52664,52666-52668,52712 via svnmerge from https://svn.boost.org/svn/boost/trunk ........ r52663 | danieljames | 2009-04-29 22:12:08 +0100 (Wed, 29 Apr 2009) | 1 line Check for invalid css links in html files as well as css files. ........ r52664 | danieljames | 2009-04-29 22:12:32 +0100 (Wed, 29 Apr 2009) | 1 line Check for external links. ........ r52666 | danieljames | 2009-04-29 22:19:12 +0100 (Wed, 29 Apr 2009) | 1 line Use local copies of the boost logo. ........ r52667 | danieljames | 2009-04-29 22:19:40 +0100 (Wed, 29 Apr 2009) | 1 line Remove unused copy of boostbook.css ........ r52668 | danieljames | 2009-04-29 22:19:56 +0100 (Wed, 29 Apr 2009) | 3 lines Fix a link to a header on trac. IMO it would be better to link to the local copy. ........ r52712 | danieljames | 2009-05-01 21:51:10 +0100 (Fri, 01 May 2009) | 1 line Better inspect error for external content. ........ [SVN r53044]
2009-05-16 13:45:21 +00:00
<a href="http://www.boost.org"><img style="border:0" src="../../../boost.png" alt="Boost" width="277" height="86"/></a>
Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
2008-06-28 18:29:40 +00:00
</div>
<h1>Boost Exception</h1>
</div>
documentation copyright message update [SVN r52126]
2009-04-02 05:04:38 +00:00
<!-- Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc. -->
Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
2008-06-28 18:29:40 +00:00
<!-- 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) -->
minor documentation update [SVN r47493]
2008-07-16 21:03:14 +00:00
<div class="RenoIncludeDIV"><div class="RenoAutoDIV"><h2>Transporting of Exceptions Between Threads</h2>
removed tabs from source files updated documentation [SVN r47251]
2008-07-09 00:39:00 +00:00
</div>
Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
2008-06-28 18:29:40 +00:00
<p>Boost Exception supports transporting of exception objects between threads through cloning. This system is similar to <span class="RenoLink"><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2179.html">N2179</a></span>, but because Boost Exception can not rely on language support, the use of <span class="RenoLink"><a href="enable_current_exception.html">enable_current_exception</a></span> at the time of the throw is required in order to use cloning.</p>
<h4>Note:</h4>
<p>All exceptions emitted by the familiar function boost::<span class="RenoLink"><a href="throw_exception.html">throw_exception</a></span> are guaranteed to derive from boost::<span class="RenoLink"><a href="exception.html">exception</a></span> and to support cloning.</p>
minor documentation update [SVN r47493]
2008-07-16 21:03:14 +00:00
<div class="RenoIncludeDIV"><div class="RenoAutoDIV"><h3>Using enable_current_exception at the Time of the Throw</h3>
removed tabs from source files updated documentation [SVN r47251]
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</div>
Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
2008-06-28 18:29:40 +00:00
<p>Here is how cloning can be enabled in a throw-expression (15.1):</p>
Boost Exception major refactoring: works with or without RTTI, vastly improved boost::throw_exception integration. [SVN r48905]
2008-09-19 20:29:26 +00:00
<pre>#include &lt;<span class="RenoLink"><a href="exception_error_info_hpp.html">boost/exception/info.hpp</a></span>&gt;
Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
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#include &lt;stdio.h&gt;
#include &lt;errno.h&gt;
typedef boost::error_info&lt;struct tag_errno,int&gt; errno_info;
class file_read_error: public boost::<span class="RenoLink"><a href="exception.html">exception</a></span> { };
void
file_read( FILE * f, void * buffer, size_t size )
{
if( size!=fread(buffer,1,size,f) )
throw boost::<span class="RenoLink"><a href="enable_current_exception.html">enable_current_exception</a></span>(file_read_error()) &lt;&lt;
errno_info(errno);
}</pre>
<p>Of course, <span class="RenoLink"><a href="enable_current_exception.html">enable_current_exception</a></span> may be used with any exception type; there is no requirement that it should derive from boost::<span class="RenoLink"><a href="exception.html">exception</a></span>.</p>
minor documentation update [SVN r47493]
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</div><div class="RenoIncludeDIV"><div class="RenoAutoDIV"><h3>Cloning and Re-Throwing an Exception</h3>
removed tabs from source files updated documentation [SVN r47251]
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</div>
Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
2008-06-28 18:29:40 +00:00
<p>When you catch an exception, you can call <span class="RenoLink"><a href="current_exception.html">current_exception</a></span> to get an <span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span> object:</p>
<pre>#include &lt;<span class="RenoLink"><a href="exception_cloning_hpp.html">boost/exception_ptr.hpp</a></span>&gt;
#include &lt;boost/thread.hpp&gt;
#include &lt;boost/bind.hpp&gt;
void do_work(); //throws cloning-enabled boost::<span class="RenoLink"><a href="exception.html">exception</a></span>s
void
worker_thread( boost::<span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span> &amp; error )
{
try
{
do_work();
error = boost::<span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span>();
}
catch(
... )
{
error = boost::<span class="RenoLink"><a href="current_exception.html">current_exception</a></span>();
}
}</pre>
<p>In the above example, note that <span class="RenoLink"><a href="current_exception.html">current_exception</a></span> captures the original type of the exception object. The exception can be thrown again using the <span class="RenoLink"><a href="rethrow_exception.html">rethrow_exception</a></span> function:</p>
<pre>// ...continued
void
work()
{
boost::<span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span> error;
boost::<span class="RenoLink"><a href="http://www.boost.org/doc/html/boost/thread.html">thread</a></span> t( boost::<span class="RenoLink"><a href="http://www.boost.org/libs/bind/bind.html">bind</a></span>(worker_thread,boost::<span class="RenoLink"><a href="http://www.boost.org/doc/html/ref.html">ref</a></span>(error)) );
t.<span class="RenoLink"><a href="http://www.boost.org/doc/html/boost/thread.html">join</a></span>();
if( error )
boost::<span class="RenoLink"><a href="rethrow_exception.html">rethrow_exception</a></span>(error);
}</pre>
removed tabs from source files updated documentation [SVN r47251]
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<p>Note that <span class="RenoLink"><a href="current_exception.html">current_exception</a></span> could fail to copy the original exception object in the following cases:</p>
<div><ul><li> if there is not enough memory, in which case the returned <span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span> points to an instance of std::bad_alloc, or</li>
<li> if <span class="RenoLink"><a href="enable_current_exception.html">enable_current_exception</a></span> was not used in the throw-expression passed to the original throw statement and the current implementation does not have the necessary compiler-specific support to copy the exception automatically, in which case the returned <span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span> points to an instance of <span class="RenoLink"><a href="unknown_exception.html">unknown_exception</a></span>.</li>
Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
2008-06-28 18:29:40 +00:00
</ul></div>
<p>Regardless, the use of <span class="RenoLink"><a href="current_exception.html">current_exception</a></span> and <span class="RenoLink"><a href="rethrow_exception.html">rethrow_exception</a></span> in the above examples is well-formed.</p>
removed tabs from source files updated documentation [SVN r47251]
2008-07-09 00:39:00 +00:00
</div></div><div class="RenoAutoDIV"><div class="RenoHR"><hr/></div>
<h3>See Also:</h3>
Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
2008-06-28 18:29:40 +00:00
<div class="RenoPageList"><a href="boost-exception.html">Boost Exception<br/>
</a></div>
removed tabs from source files updated documentation [SVN r47251]
2008-07-09 00:39:00 +00:00
</div>
documentation copyright message update [SVN r52126]
2009-04-02 05:04:38 +00:00
<!-- Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc. -->
Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
2008-06-28 18:29:40 +00:00
<!-- 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) -->
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documentation update [SVN r52047]
2009-03-29 05:04:54 +00:00
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Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
2008-06-28 18:29:40 +00:00
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documentation copyright message update [SVN r52126]
2009-04-02 05:04:38 +00:00
<small>Copyright (c) 2006-2009 by Emil Dotchevski and Reverge Studios, Inc.<br/>
Boost Exception In other libraries, watch for compile error referring to throw_exception_assert_compatibility in boost::throw_exception. Resolve by throwing an exception that derives from std::exception. This is not a new requirement but it is being enforced now. [SVN r46818]
2008-06-28 18:29:40 +00:00
Distributed under the <a href="http://www.boost.org/LICENSE_1_0.txt">Boost Software License, Version 1.0</a>.</small>
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