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<div id="projectname">Hardware Locality (hwloc) <span id="projectnumber">1.3.1</span></div>
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<div class="title">glibc-sched.h</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright © 2009 CNRS</span>
<a name="l00003"></a>00003 <span class="comment"> * Copyright © 2009-2010 INRIA. All rights reserved.</span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright © 2009-2011 Université Bordeaux 1</span>
<a name="l00005"></a>00005 <span class="comment"> * Copyright © 2011 Cisco Systems, Inc. All rights reserved.</span>
<a name="l00006"></a>00006 <span class="comment"> * See COPYING in top-level directory.</span>
<a name="l00007"></a>00007 <span class="comment"> */</span>
<a name="l00008"></a>00008
<a name="l00017"></a>00017 <span class="preprocessor">#ifndef HWLOC_GLIBC_SCHED_H</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor">#define HWLOC_GLIBC_SCHED_H</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include <hwloc.h></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include <hwloc/helper.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <assert.h></span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#if !defined _GNU_SOURCE || !defined _SCHED_H || (!defined CPU_SETSIZE && !defined sched_priority)</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor">#error Please make sure to include sched.h before including glibc-sched.h, and define _GNU_SOURCE before any inclusion of sched.h</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">"C"</span> {
<a name="l00031"></a>00031 <span class="preprocessor">#endif</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="preprocessor">#ifdef HWLOC_HAVE_CPU_SET</span>
<a name="l00035"></a>00035 <span class="preprocessor"></span>
<a name="l00036"></a>00036
<a name="l00049"></a>00049 <span class="keyword">static</span> inline <span class="keywordtype">int</span>
<a name="l00050"></a><a class="code" href="a00064.html#ga39454e6013441d32e58ef4c4fcba7e4b">00050</a> <a class="code" href="a00064.html#ga39454e6013441d32e58ef4c4fcba7e4b" title="Convert hwloc CPU set toposet into glibc sched affinity CPU set schedset.">hwloc_cpuset_to_glibc_sched_affinity</a>(<a class="code" href="a00038.html#ga9d1e76ee15a7dee158b786c30b6a6e38" title="Topology context.">hwloc_topology_t</a> topology , <a class="code" href="a00039.html#ga1f784433e9b606261f62d1134f6a3b25" title="A non-modifiable hwloc_cpuset_t.">hwloc_const_cpuset_t</a> hwlocset,
<a name="l00051"></a>00051 cpu_set_t *schedset, <span class="keywordtype">size_t</span> schedsetsize)
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053 <span class="preprocessor">#ifdef CPU_ZERO_S</span>
<a name="l00054"></a>00054 <span class="preprocessor"></span> <span class="keywordtype">unsigned</span> cpu;
<a name="l00055"></a>00055 CPU_ZERO_S(schedsetsize, schedset);
<a name="l00056"></a>00056 <a class="code" href="a00063.html#ga3f6861045a8029ade373510ffa727d2a" title="Loop macro iterating on bitmap bitmap.">hwloc_bitmap_foreach_begin</a>(cpu, hwlocset)
<a name="l00057"></a>00057 CPU_SET_S(cpu, schedsetsize, schedset);
<a name="l00058"></a>00058 <a class="code" href="a00063.html#gafcf3246db406218d4e155735b3fa6528" title="End of loop. Needs a terminating ';'.">hwloc_bitmap_foreach_end</a>();
<a name="l00059"></a>00059 <span class="preprocessor">#else </span><span class="comment">/* !CPU_ZERO_S */</span>
<a name="l00060"></a>00060 <span class="keywordtype">unsigned</span> cpu;
<a name="l00061"></a>00061 CPU_ZERO(schedset);
<a name="l00062"></a>00062 assert(schedsetsize == <span class="keyword">sizeof</span>(cpu_set_t));
<a name="l00063"></a>00063 <a class="code" href="a00063.html#ga3f6861045a8029ade373510ffa727d2a" title="Loop macro iterating on bitmap bitmap.">hwloc_bitmap_foreach_begin</a>(cpu, hwlocset)
<a name="l00064"></a>00064 CPU_SET(cpu, schedset);
<a name="l00065"></a>00065 <a class="code" href="a00063.html#gafcf3246db406218d4e155735b3fa6528" title="End of loop. Needs a terminating ';'.">hwloc_bitmap_foreach_end</a>();
<a name="l00066"></a>00066 <span class="preprocessor">#endif </span><span class="comment">/* !CPU_ZERO_S */</span>
<a name="l00067"></a>00067 <span class="keywordflow">return</span> 0;
<a name="l00068"></a>00068 }
<a name="l00069"></a>00069
<a name="l00077"></a>00077 <span class="keyword">static</span> inline <span class="keywordtype">int</span>
<a name="l00078"></a><a class="code" href="a00064.html#ga6df504b2f5440b527be05cdad6b1655e">00078</a> <a class="code" href="a00064.html#ga6df504b2f5440b527be05cdad6b1655e" title="Convert glibc sched affinity CPU set schedset into hwloc CPU set.">hwloc_cpuset_from_glibc_sched_affinity</a>(<a class="code" href="a00038.html#ga9d1e76ee15a7dee158b786c30b6a6e38" title="Topology context.">hwloc_topology_t</a> topology , <a class="code" href="a00039.html#ga4bbf39b68b6f568fb92739e7c0ea7801" title="A CPU set is a bitmap whose bits are set according to CPU physical OS indexes.">hwloc_cpuset_t</a> hwlocset,
<a name="l00079"></a>00079 <span class="keyword">const</span> cpu_set_t *schedset, <span class="keywordtype">size_t</span> schedsetsize)
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 <span class="preprocessor">#ifdef CPU_ZERO_S</span>
<a name="l00082"></a>00082 <span class="preprocessor"></span> <span class="keywordtype">int</span> cpu, count;
<a name="l00083"></a>00083 <span class="preprocessor">#endif</span>
<a name="l00084"></a>00084 <span class="preprocessor"></span> <a class="code" href="a00063.html#ga6c540b9fe63b8223b6aba46d56dd63b8" title="Empty the bitmap bitmap.">hwloc_bitmap_zero</a>(hwlocset);
<a name="l00085"></a>00085 <span class="preprocessor">#ifdef CPU_ZERO_S</span>
<a name="l00086"></a>00086 <span class="preprocessor"></span> count = CPU_COUNT_S(schedsetsize, schedset);
<a name="l00087"></a>00087 cpu = 0;
<a name="l00088"></a>00088 <span class="keywordflow">while</span> (count) {
<a name="l00089"></a>00089 <span class="keywordflow">if</span> (CPU_ISSET_S(cpu, schedsetsize, schedset)) {
<a name="l00090"></a>00090 <a class="code" href="a00063.html#ga497556af0cc34f109ae0277999c074d3" title="Add index id in bitmap bitmap.">hwloc_bitmap_set</a>(hwlocset, cpu);
<a name="l00091"></a>00091 count--;
<a name="l00092"></a>00092 }
<a name="l00093"></a>00093 cpu++;
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095 <span class="preprocessor">#else </span><span class="comment">/* !CPU_ZERO_S */</span>
<a name="l00096"></a>00096 <span class="comment">/* sched.h does not support dynamic cpu_set_t (introduced in glibc 2.7),</span>
<a name="l00097"></a>00097 <span class="comment"> * assume we have a very old interface without CPU_COUNT (added in 2.6)</span>
<a name="l00098"></a>00098 <span class="comment"> */</span>
<a name="l00099"></a>00099 <span class="keywordtype">int</span> cpu;
<a name="l00100"></a>00100 assert(schedsetsize == <span class="keyword">sizeof</span>(cpu_set_t));
<a name="l00101"></a>00101 <span class="keywordflow">for</span>(cpu=0; cpu<CPU_SETSIZE; cpu++)
<a name="l00102"></a>00102 <span class="keywordflow">if</span> (CPU_ISSET(cpu, schedset))
<a name="l00103"></a>00103 <a class="code" href="a00063.html#ga497556af0cc34f109ae0277999c074d3" title="Add index id in bitmap bitmap.">hwloc_bitmap_set</a>(hwlocset, cpu);
<a name="l00104"></a>00104 <span class="preprocessor">#endif </span><span class="comment">/* !CPU_ZERO_S */</span>
<a name="l00105"></a>00105 <span class="keywordflow">return</span> 0;
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107
<a name="l00111"></a>00111 <span class="preprocessor">#endif </span><span class="comment">/* CPU_SET */</span>
<a name="l00112"></a>00112
<a name="l00113"></a>00113
<a name="l00114"></a>00114 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00115"></a>00115 <span class="preprocessor"></span>} <span class="comment">/* extern "C" */</span>
<a name="l00116"></a>00116 <span class="preprocessor">#endif</span>
<a name="l00117"></a>00117 <span class="preprocessor"></span>
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="preprocessor">#endif </span><span class="comment">/* HWLOC_GLIBC_SCHED_H */</span>
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