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<title>Feature test macros for Pthreads</title>
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<h2>Feature test macros for Pthreads</h2>
<table border>
<tr>
<th valign="top">Constant</th>
<th valign="top">Description</th>
</tr>
<tr>
<td align="left" valign="top">_POSIX_THREADS</td>
<td align="left" valign="top">Base threads</td>
</tr>
<tr>
<td align="left" valign="top">_POSIX_THREAD_ATTR_STACKADDR</td>
<td align="left" valign="top">Stack address attribute. Not present
in the i5/OS implementation.</td>
</tr>
<tr>
<td align="left" valign="top">_POSIX_THREAD_ATTR_STACKSIZE</td>
<td align="left" valign="top">Stack size attribute. Not present in
the i5/OS implementation.</td>
</tr>
<tr>
<td align="left" valign="top">
_POSIX_THREAD_PRIORITY_SCHEDULING</td>
<td align="left" valign="top">Thread priority scheduling. Not
present in the i5/OS implementation.</td>
</tr>
<tr>
<td align="left" valign="top">_POSIX_THREAD_PRIO_INHERIT</td>
<td align="left" valign="top">Mutex priority inheritance. Not
present in the i5/OS implementation.</td>
</tr>
<tr>
<td align="left" valign="top">_POSIX_THREAD_PRIO_PROTECT</td>
<td align="left" valign="top">Mutex priority ceiling. Not present
in the i5/OS implementation.</td>
</tr>
<tr>
<td align="left" valign="top">_POSIX_THREAD_PROCESS_SHARED</td>
<td align="left" valign="top">Synchronization primitives may be
shared between processes.</td>
</tr>
</table>
<p>The i5/OS implementation of pthreads defines the <strong>
_POSIX_THREADS</strong> and <strong>_POSIX_THREAD_PROCESS_SHARED</strong>
feature test macros. See <a href="concep11.htm">Unsupported preprocessor and
feature test macros</a> for a complete list of unsupported feature test
macros.</p>
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<a href="rzah4mst.htm">Pthread APIs</a> |
<a href="aplist.htm">APIs by category</a></td>
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