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support for exception_ptr and nesting of exception_ptr objects in boost::diagnostic_information

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[SVN r53066]
This commit is contained in:
Emil Dotchevski
2009-05-17 06:12:29 +00:00
parent 4138359063
commit de1a3daa85
47 changed files with 7227 additions and 6549 deletions
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10
doc/current_exception.html
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@ -21,7 +21,7 @@
<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -->
<div class="RenoIncludeDIV"><div class="RenoAutoDIV"><h3>current_exception</h3>
</div>
<div class="RenoIncludeDIV"><p><span class="RenoEscape">&#35;<!--<wiki>`&#35;</wiki>--></span>include &lt;<span class="RenoLink"><a href="exception_cloning_hpp.html">boost/exception_ptr.hpp</a></span>&gt;</p>
<div class="RenoIncludeDIV"><p><span class="RenoEscape">&#35;<!--<wiki>`&#35;</wiki>--></span>include &lt;<span class="RenoLink"><a href="boost_exception_ptr_hpp.html">boost/exception_ptr.hpp</a></span>&gt;</p>
<pre>namespace
boost
{
@ -37,16 +37,20 @@ boost
<p>Nothing.</p>
<h4>Notes:</h4>
<div><ul><li> It is unspecified whether the return values of two successive calls to <span class="RenoLink">current_exception</span> refer to the same exception object.</li>
<li> Correct implementation of <span class="RenoLink">current_exception</span> may require compiler support, unless <span class="RenoLink"><a href="enable_current_exception.html">enable_current_exception</a></span> was used at the time the currently handled exception object was passed to throw. If <span class="RenoLink"><a href="enable_current_exception.html">enable_current_exception</a></span> was not used, and if the compiler does not provide the necessary support, then <span class="RenoLink">current_exception</span> may return an <span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span> that refers to an instance of <span class="RenoLink"><a href="unknown_exception.html">unknown_exception</a></span>. In this case, if the original exception object derives from boost::<span class="RenoLink"><a href="exception.html">exception</a></span>, then the boost::<span class="RenoLink"><a href="exception.html">exception</a></span> sub-object of the <span class="RenoLink"><a href="unknown_exception.html">unknown_exception</a></span> object is initialized by the boost::<span class="RenoLink"><a href="exception.html">exception</a></span> copy constructor.</li>
<li> Correct implementation of <span class="RenoLink">current_exception</span> may require compiler support, unless <span class="RenoLink"><a href="enable_current_exception.html">enable_current_exception</a></span> was used at the time the currently handled exception object was passed to throw. Whenever <span class="RenoLink">current_exception</span> fails to properly copy the current exception object, it returns an <span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span> to an object of type that is as close as possible to the original exception type, using <span class="RenoLink"><a href="unknown_exception.html">unknown_exception</a></span> as a final fallback. All such types derive from boost::<span class="RenoLink"><a href="exception.html">exception</a></span>, and:<div><ul><li> if the original exception object derives from boost::<span class="RenoLink"><a href="exception.html">exception</a></span>, then the boost::<span class="RenoLink"><a href="exception.html">exception</a></span> sub-object of the object referred to by the returned <span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span> is initialized by the boost::<span class="RenoLink"><a href="exception.html">exception</a></span> copy constructor;</li>
<li> if available, the exception contains the std::type_info of the original exception object, accessible through <span class="RenoLink"><a href="get_error_info.html">get_error_info</a></span>&lt;<span class="RenoLink"><a href="original_exception_type.html">original_exception_type</a></span>&gt;.</li>
</ul></div>
</li>
</ul></div>
</div><div class="RenoAutoDIV"><div class="RenoHR"><hr/></div>
<h3>See Also:</h3>
<div class="RenoPageList"><a href="boost-exception.html">Boost Exception<br/>
</a><a href="exception_cloning_hpp.html">boost/exception_ptr.hpp<br/>
</a><a href="boost_exception_ptr_hpp.html">boost/exception_ptr.hpp<br/>
</a><a href="copy_exception.html">copy_exception<br/>
</a><a href="enable_current_exception.html">enable_current_exception<br/>
</a><a href="exception_ptr.html">exception_ptr<br/>
</a><a href="frequently_asked_questions.html">Frequently Asked Questions<br/>
</a><a href="original_exception_type.html">original_exception_type<br/>
</a><a href="unknown_exception.html">unknown_exception<br/>
</a></div>
</div>