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Boost Exception documentation update [SVN r44444]
2008-04-15 21:56:34 +00:00
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<h1>Boost Exception</h1>
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minor documentation fixes. [SVN r44476]
2008-04-16 22:55:19 +00:00
<!-- Copyright (c) 2006-2008 Emil Dotchevski and Reverge Studios, Inc. -->
<!-- Distributed under the Boost Software License, Version 1.0. (See accompanying -->
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Boost Exception documentation update [SVN r44444]
2008-04-15 21:56:34 +00:00
<div class="RenoIncludeDIV"><h3>current_exception()</h3>
<div class="RenoIncludeDIV"><p><tt>#include &lt;<span class="RenoLink"><a href="exception_cloning_hpp.html">boost/exception_ptr.hpp</a></span>&gt;</tt></p>
<pre>namespace
boost
{
<span class="RenoIncludeSPAN"> <span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span> <span class="RenoLink"><a href="current_exception.html">current_exception</a></span>();</span>
}</pre>
</div><h4>Requirements:</h4>
<p>The <tt><span class="RenoLink"><a href="current_exception.html">current_exception</a></span>()</tt> function must not be called outside of a <tt>catch</tt> block.</p>
<h4>Returns:</h4>
<div><ul><li> An <tt><span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span></tt> that refers to the currently handled exception or a copy of the currently handled exception.</li>
<li> If the function needs to allocate memory and the attempt fails, it returns an <tt><span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span></tt> that refers to an instance of <tt>std::bad_alloc</tt>.</li>
</ul></div>
<h4>Notes:</h4>
<div><ul><li> It is unspecified whether the return values of two successive calls to <tt><span class="RenoLink"><a href="current_exception.html">current_exception</a></span>()</tt> refer to the same exception object.</li>
<li> Correct implementation of <tt><span class="RenoLink"><a href="current_exception.html">current_exception</a></span>()</tt> may require compiler support, unless <tt><span class="RenoLink"><a href="enable_current_exception.html">enable_current_exception</a></span>()</tt> is used at the time the currently handled exception object was passed to <tt>throw</tt>. If <tt><span class="RenoLink"><a href="enable_current_exception.html">enable_current_exception</a></span>()</tt> is not used, and if the compiler does not provide the necessary support, then <tt><span class="RenoLink"><a href="current_exception.html">current_exception</a></span>()</tt> may return an <tt><span class="RenoLink"><a href="exception_ptr.html">exception_ptr</a></span></tt> that refers to an instance of <tt><span class="RenoLink"><a href="unknown_exception.html">unknown_exception</a></span></tt>. In this case, if the original exception object derives from <tt>boost::<span class="RenoLink"><a href="exception.html">exception</a></span></tt>, then the <tt>boost::<span class="RenoLink"><a href="exception.html">exception</a></span></tt> sub-object of the <tt><span class="RenoLink"><a href="unknown_exception.html">unknown_exception</a></span></tt> object is initialized by the <tt>boost::<span class="RenoLink"><a href="exception.html">exception</a></span></tt> copy constructor.</li>
</ul></div>
</div><h3>See also:</h3>
<div class="RenoPageList"><a href="boost-exception.html">Boost Exception<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="unknown_exception.html">unknown_exception<br/>
</a></div>
minor documentation fixes. [SVN r44476]
2008-04-16 22:55:19 +00:00
<!-- Copyright (c) 2006-2008 Emil Dotchevski and Reverge Studios, 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) -->
Boost Exception documentation update [SVN r44444]
2008-04-15 21:56:34 +00:00
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