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<title>Hardware Locality (hwloc): Interoperability with glibc sched affinity</title>
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   <div id="projectname">Hardware Locality (hwloc)
   &#160;<span id="projectnumber">2.4.1</span>
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<div class="header">
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<a href="#func-members">Functions</a>  </div>
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<div class="title">Interoperability with glibc sched affinity</div>  </div>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga88699a0c86c66a9b7baa3468cd9d24c3"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00223.html#ga88699a0c86c66a9b7baa3468cd9d24c3">hwloc_cpuset_to_glibc_sched_affinity</a> (<a class="el" href="a00192.html#ga9d1e76ee15a7dee158b786c30b6a6e38">hwloc_topology_t</a> topology, <a class="el" href="a00189.html#ga1f784433e9b606261f62d1134f6a3b25">hwloc_const_cpuset_t</a> hwlocset, cpu_set_t *schedset, size_t schedsetsize)</td></tr>
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<tr class="memitem:ga8ec807ec17de57fa77aa5cfd6c8e4bfb"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00223.html#ga8ec807ec17de57fa77aa5cfd6c8e4bfb">hwloc_cpuset_from_glibc_sched_affinity</a> (<a class="el" href="a00192.html#ga9d1e76ee15a7dee158b786c30b6a6e38">hwloc_topology_t</a> topology, <a class="el" href="a00189.html#ga4bbf39b68b6f568fb92739e7c0ea7801">hwloc_cpuset_t</a> hwlocset, const cpu_set_t *schedset, size_t schedsetsize)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>This interface offers ways to convert between hwloc cpusets and glibc cpusets such as those manipulated by sched_getaffinity() or pthread_attr_setaffinity_np().</p>
<dl class="section note"><dt>Note</dt><dd>Topology <code>topology</code> must match the current machine. </dd></dl>
<h2 class="groupheader">Function Documentation</h2>
<a id="ga8ec807ec17de57fa77aa5cfd6c8e4bfb"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga8ec807ec17de57fa77aa5cfd6c8e4bfb">&#9670;&nbsp;</a></span>hwloc_cpuset_from_glibc_sched_affinity()</h2>

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          <td class="memname">static int hwloc_cpuset_from_glibc_sched_affinity </td>
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          <td class="paramtype"><a class="el" href="a00192.html#ga9d1e76ee15a7dee158b786c30b6a6e38">hwloc_topology_t</a>&#160;</td>
          <td class="paramname"><em>topology</em>, </td>
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          <td class="paramtype"><a class="el" href="a00189.html#ga4bbf39b68b6f568fb92739e7c0ea7801">hwloc_cpuset_t</a>&#160;</td>
          <td class="paramname"><em>hwlocset</em>, </td>
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          <td class="paramtype">const cpu_set_t *&#160;</td>
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          <td class="paramkey"></td>
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          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>schedsetsize</em>&#160;</td>
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<p>Convert glibc sched affinity CPU set <code>schedset</code> into hwloc CPU set. </p>
<p>This function may be used before calling sched_setaffinity or any other function that takes a cpu_set_t as input parameter.</p>
<p><code>schedsetsize</code> should be sizeof(cpu_set_t) unless <code>schedset</code> was dynamically allocated with CPU_ALLOC </p>

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<a id="ga88699a0c86c66a9b7baa3468cd9d24c3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga88699a0c86c66a9b7baa3468cd9d24c3">&#9670;&nbsp;</a></span>hwloc_cpuset_to_glibc_sched_affinity()</h2>

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          <td class="memname">static int hwloc_cpuset_to_glibc_sched_affinity </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="a00192.html#ga9d1e76ee15a7dee158b786c30b6a6e38">hwloc_topology_t</a>&#160;</td>
          <td class="paramname"><em>topology</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="a00189.html#ga1f784433e9b606261f62d1134f6a3b25">hwloc_const_cpuset_t</a>&#160;</td>
          <td class="paramname"><em>hwlocset</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">cpu_set_t *&#160;</td>
          <td class="paramname"><em>schedset</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>schedsetsize</em>&#160;</td>
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          <td>)</td>
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<p>Convert hwloc CPU set <code>toposet</code> into glibc sched affinity CPU set <code>schedset</code>. </p>
<p>This function may be used before calling sched_setaffinity or any other function that takes a cpu_set_t as input parameter.</p>
<p><code>schedsetsize</code> should be sizeof(cpu_set_t) unless <code>schedset</code> was dynamically allocated with CPU_ALLOC </p>

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