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| 28 | <h2><span class="refentrytitle">Macro BOOST_ONCE_INIT</span></h2> |
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| 29 | <p>BOOST_ONCE_INIT — The call_once function and |
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| 30 | <code class="computeroutput">once_flag</code> type (statically initialized to |
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| 31 | <a href="BOOST_ONCE_INIT.html" title="Macro BOOST_ONCE_INIT">BOOST_ONCE_INIT</a>) can be used to run a |
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| 32 | routine exactly once. This can be used to initialize data in a |
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| 33 | <a href="threads.html#threads.glossary.thread-safe">thread-safe</a> |
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| 34 | manner.</p> |
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| 35 | </div> |
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| 36 | <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> |
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| 37 | <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis">BOOST_ONCE_INIT</pre></div> |
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| 38 | <div class="refsect1" lang="en"> |
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| 39 | <a name="id2782136"></a><h2>Description</h2>The implementation-defined macro |
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| 40 | <a href="BOOST_ONCE_INIT.html" title="Macro BOOST_ONCE_INIT">BOOST_ONCE_INIT</a> is a constant value used to |
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| 41 | initialize <code class="computeroutput">once_flag</code> instances to indicate that the |
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| 42 | logically associated routine has not been run yet. See |
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| 43 | call_once for more details.</div> |
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