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<div class="headertitle"><div class="title">pool.hpp</div></div>
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<div class="contents">
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> SPDX-License-Identifier: MIT</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> Copyright © 2023-2024 Amebis</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">*/</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span> </div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#pragma once</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span> </div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include "compat.hpp"</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include "spinlock.hpp"</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#ifdef _WIN32</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include "windows.h"</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include <list></span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include <map></span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include <mutex></span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="keyword">namespace </span>stdex</div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span>{</div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">template</span> <<span class="keyword">class</span> T></div>
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<div class="foldopen" id="foldopen00023" data-start="{" data-end="};">
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"><a class="line" href="classstdex_1_1pool.html"> 23</a></span> <span class="keyword">class </span><a class="code hl_class" href="classstdex_1_1pool.html">pool</a></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> {</div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#ifdef _WIN32</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">using </span>numaid_t = USHORT;</div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#else</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">using </span>numaid_t = int;</div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">struct </span>numaentry_t {</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">mutable</span> <a class="code hl_class" href="classstdex_1_1spinlock.html">spinlock</a> lock;</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> std::list<T> list;</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> };</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> </div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">mutable</span> std::mutex m_mutex;</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> std::map<numaid_t, numaentry_t> m_available;</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> </div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="keyword">static</span> numaid_t numa_node()</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> {</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="preprocessor">#if defined(_WIN32)</span></div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> PROCESSOR_NUMBER Processor;</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> GetCurrentProcessorNumberEx(&Processor);</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> USHORT NodeNumber = 0;</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keywordflow">return</span> GetNumaProcessorNodeEx(&Processor, &NodeNumber) ? NodeNumber : 0;</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span><span class="preprocessor">#elif defined(__APPLE__)</span></div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="preprocessor">#else</span></div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keywordflow">return</span> numa_node_of_cpu(sched_getcpu());</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> }</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> </div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> numaentry_t& numa_entry(numaid_t numa = numa_node())</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> {</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">const</span> std::lock_guard<std::mutex> guard(m_mutex);</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordflow">return</span> m_available[numa];</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> }</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> </div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">public</span>:</div>
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<div class="foldopen" id="foldopen00070" data-start="{" data-end="}">
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"><a class="line" href="classstdex_1_1pool.html#a9731f8edc72b43f5a4c4622ce6a51aeb"> 70</a></span> T <a class="code hl_function" href="classstdex_1_1pool.html#a9731f8edc72b43f5a4c4622ce6a51aeb">pop</a>(_In_ numaid_t numa = numa_node())</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> {</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">auto</span>& ne = numa_entry(numa);</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="keyword">const</span> std::lock_guard<spinlock> guard(ne.lock);</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keywordflow">if</span> (!ne.list.empty()) {</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keyword">auto</span> r = std::move(ne.list.front());</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> ne.list.pop_front();</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="keywordflow">return</span> r;</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> }</div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <span class="keywordflow">return</span> T();</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> }</div>
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</div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div>
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<div class="foldopen" id="foldopen00088" data-start="{" data-end="}">
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"><a class="line" href="classstdex_1_1pool.html#aa60ba8cd95b3d28977ae9a9e36005108"> 88</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classstdex_1_1pool.html#aa60ba8cd95b3d28977ae9a9e36005108">push</a>(_Inout_ T&& r, _In_ numaid_t numa = numa_node())</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> {</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="keyword">auto</span>& ne = numa_entry(numa);</div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keyword">const</span> std::lock_guard<spinlock> guard(ne.lock);</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> ne.list.push_front(std::move(r));</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> }</div>
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</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> </div>
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<div class="foldopen" id="foldopen00098" data-start="{" data-end="}">
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"><a class="line" href="classstdex_1_1pool.html#a96acba9575913aa2c1a4179f84673c77"> 98</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classstdex_1_1pool.html#a96acba9575913aa2c1a4179f84673c77">clear</a>()</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> {</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">const</span> std::lock_guard<std::mutex> guard_m(m_mutex);</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span>& ne : m_available) {</div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">const</span> std::lock_guard<spinlock> guard_l(ne.second.lock);</div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keywordflow">while</span> (!ne.second.list.empty())</div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> ne.second.list.pop_front();</div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> }</div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> }</div>
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</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> };</div>
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</div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span>}</div>
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<div class="ttc" id="aclassstdex_1_1pool_html"><div class="ttname"><a href="classstdex_1_1pool.html">stdex::pool</a></div><div class="ttdoc">Per-NUMA pool of items.</div><div class="ttdef"><b>Definition</b> pool.hpp:24</div></div>
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<div class="ttc" id="aclassstdex_1_1pool_html_a96acba9575913aa2c1a4179f84673c77"><div class="ttname"><a href="classstdex_1_1pool.html#a96acba9575913aa2c1a4179f84673c77">stdex::pool::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">Removes all items from the pool.</div><div class="ttdef"><b>Definition</b> pool.hpp:98</div></div>
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<div class="ttc" id="aclassstdex_1_1pool_html_a9731f8edc72b43f5a4c4622ce6a51aeb"><div class="ttname"><a href="classstdex_1_1pool.html#a9731f8edc72b43f5a4c4622ce6a51aeb">stdex::pool::pop</a></div><div class="ttdeci">T pop(numaid_t numa=numa_node())</div><div class="ttdoc">Removes an item from the pool.</div><div class="ttdef"><b>Definition</b> pool.hpp:70</div></div>
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<div class="ttc" id="aclassstdex_1_1pool_html_aa60ba8cd95b3d28977ae9a9e36005108"><div class="ttname"><a href="classstdex_1_1pool.html#aa60ba8cd95b3d28977ae9a9e36005108">stdex::pool::push</a></div><div class="ttdeci">void push(T &&r, numaid_t numa=numa_node())</div><div class="ttdoc">Adds an item to the pool.</div><div class="ttdef"><b>Definition</b> pool.hpp:88</div></div>
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<div class="ttc" id="aclassstdex_1_1spinlock_html"><div class="ttname"><a href="classstdex_1_1spinlock.html">stdex::spinlock</a></div><div class="ttdoc">Spin-lock.</div><div class="ttdef"><b>Definition</b> spinlock.hpp:22</div></div>
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