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<html>
<head>
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<title>Configuration</title>
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<div class="titlepage"><div><div><h3 class="title">
<a name="thread.configuration"></a>Configuration</h3></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="configuration.html#thread.configuration.public">Library Defined Public Macros</a></span></dt>
<dt><span class="section"><a href="configuration.html#thread.configuration.implementation">Library Defined Implementation Macros</a></span></dt>
</dl></div>
<p><span class="bold"><strong>Boost.Threads</strong></span> uses several configuration macros in <boost/config.hpp>,
as well as configuration macros meant to be supplied by the application. These
macros are documented here.
</p>
<div class="section" lang="en">
<div class="titlepage"><div><div><h4 class="title">
<a name="thread.configuration.public"></a>Library Defined Public Macros</h4></div></div></div>
<p>
These macros are defined by <span class="bold"><strong>Boost.Threads</strong></span> but are expected to be used
by application code.
</p>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>Macro</th>
<th>Meaning</th>
</tr></thead>
<tbody><tr>
<td>BOOST_HAS_THREADS</td>
<td>
Indicates that threading support is available. This means both that there
is a platform specific implementation for <span class="bold"><strong>Boost.Threads</strong></span> and that
threading support has been enabled in a platform specific manner. For instance,
on the Win32 platform there's an implementation for <span class="bold"><strong>Boost.Threads</strong></span>
but unless the program is compiled against one of the multithreading runtimes
(often determined by the compiler predefining the macro _MT) the BOOST_HAS_THREADS
macro remains undefined.
</td>
</tr></tbody>
</table></div>
</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h4 class="title">
<a name="thread.configuration.implementation"></a>Library Defined Implementation Macros</h4></div></div></div>
<p>
These macros are defined by <span class="bold"><strong>Boost.Threads</strong></span> and are implementation details
of interest only to implementors.
</p>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>Macro</th>
<th>Meaning</th>
</tr></thead>
<tbody>
<tr>
<td>BOOST_HAS_WINTHREADS</td>
<td>
Indicates that the platform has the Microsoft Win32 threading libraries,
and that they should be used to implement <span class="bold"><strong>Boost.Threads</strong></span>.
</td>
</tr>
<tr>
<td>BOOST_HAS_PTHREADS</td>
<td>
Indicates that the platform has the POSIX pthreads libraries, and that
they should be used to implement <span class="bold"><strong>Boost.Threads</strong></span>.
</td>
</tr>
<tr>
<td>BOOST_HAS_FTIME</td>
<td>
Indicates that the implementation should use GetSystemTimeAsFileTime()
and the FILETIME type to calculate the current time. This is an implementation
detail used by boost::detail::getcurtime().
</td>
</tr>
<tr>
<td>BOOST_HAS_GETTTIMEOFDAY</td>
<td>
Indicates that the implementation should use gettimeofday() to calculate
the current time. This is an implementation detail used by boost::detail::getcurtime().
</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<table width="100%"><tr>
<td align="left"><small><p>Last revised: July 17, 2004 at 04:33:59 GMT</p></small></td>
<td align="right"><small>Copyright © 2001-2003 William E. Kempf</small></td>
</tr></table>
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