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| <div class="titlepage"><div><div><h4 class="title"> |
| <a name="boost_asio.reference.io_service.post"></a><a class="link" href="post.html" title="io_service::post">io_service::post</a> |
| </h4></div></div></div> |
| <p> |
| <a class="indexterm" name="id1160639"></a> |
| Request the <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> to invoke the given |
| handler and return immediately. |
| </p> |
| <pre class="programlisting"><span class="keyword">template</span><span class="special"><</span> |
| <span class="keyword">typename</span> <a class="link" href="../CompletionHandler.html" title="Completion handler requirements">CompletionHandler</a><span class="special">></span> |
| <span class="keyword">void</span> <span class="identifier">post</span><span class="special">(</span> |
| <span class="identifier">CompletionHandler</span> <span class="identifier">handler</span><span class="special">);</span> |
| </pre> |
| <p> |
| This function is used to ask the <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> to execute the given |
| handler, but without allowing the <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> to call the handler |
| from inside this function. |
| </p> |
| <p> |
| The <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> |
| guarantees that the handler will only be called in a thread in which the |
| <code class="computeroutput"><span class="identifier">run</span><span class="special">()</span></code>, |
| <code class="computeroutput"><span class="identifier">run_one</span><span class="special">()</span></code>, |
| <code class="computeroutput"><span class="identifier">poll</span><span class="special">()</span></code> |
| or <code class="computeroutput"><span class="identifier">poll_one</span><span class="special">()</span></code> |
| member functions is currently being invoked. |
| </p> |
| <a name="boost_asio.reference.io_service.post.parameters"></a><h6> |
| <a name="id1160854"></a> |
| <a class="link" href="post.html#boost_asio.reference.io_service.post.parameters">Parameters</a> |
| </h6> |
| <div class="variablelist"> |
| <p class="title"><b></b></p> |
| <dl> |
| <dt><span class="term">handler</span></dt> |
| <dd> |
| <p> |
| The handler to be called. The <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> will make a copy |
| of the handler object as required. The function signature of the |
| handler must be: |
| </p> |
| <pre class="programlisting"><span class="keyword">void</span> <span class="identifier">handler</span><span class="special">();</span> |
| </pre> |
| <p> |
| </p> |
| </dd> |
| </dl> |
| </div> |
| <a name="boost_asio.reference.io_service.post.remarks"></a><h6> |
| <a name="id1160933"></a> |
| <a class="link" href="post.html#boost_asio.reference.io_service.post.remarks">Remarks</a> |
| </h6> |
| <p> |
| This function throws an exception only if: |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"> |
| the handler's <code class="computeroutput"><span class="identifier">asio_handler_allocate</span></code> |
| function; or |
| </li> |
| <li class="listitem"> |
| the handler's copy constructor |
| </li> |
| </ul></div> |
| <p> |
| throws an exception. |
| </p> |
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| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2003 - 2010 Christopher M. Kohlhoff<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
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