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<a href="ProducerConsumerQueue_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> * Copyright (c) Meta Platforms, Inc. and affiliates.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> *</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * you may not use this file except in compliance with the License.</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * You may obtain a copy of the License at</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> *</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> *</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> * distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> * See the License for the specific language governing permissions and</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> * limitations under the License.</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> */</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment">// @author Bo Hu (bhu@fb.com)</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment">// @author Jordan DeLong (delong.j@fb.com)</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="comment">// Changes made by PSD Detector Group:</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="comment">// Copied: Line 34 constexpr std::size_t hardware_destructive_interference_size = 128; from folly/lang/Align.h</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="comment">// Changed extension to .hpp</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include &lt;atomic&gt;</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#include &lt;cassert&gt;</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#include &lt;cstdlib&gt;</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#include &lt;memory&gt;</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#include &lt;stdexcept&gt;</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="preprocessor">#include &lt;utility&gt;</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"><a class="line" href="ProducerConsumerQueue_8hpp.html#afcfcf0ecf646b16dd2b471dc568cf6c6"> 34</a></span><span class="keyword">constexpr</span> std::size_t <a class="code hl_variable" href="ProducerConsumerQueue_8hpp.html#afcfcf0ecf646b16dd2b471dc568cf6c6">hardware_destructive_interference_size</a> = 128;</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"><a class="line" href="namespacefolly.html"> 35</a></span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacefolly.html">folly</a> {</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="comment">/*</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="comment"> * ProducerConsumerQueue is a one producer and one consumer queue</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="comment"> * without locks.</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="comment"> */</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html"> 41</a></span><span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt; <span class="keyword">struct </span><a class="code hl_struct" href="structfolly_1_1ProducerConsumerQueue.html">ProducerConsumerQueue</a> {</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#ab9ca59636041c88588bf0a367c4c9415"> 42</a></span> <span class="keyword">typedef</span> T <a class="code hl_typedef" href="structfolly_1_1ProducerConsumerQueue.html#ab9ca59636041c88588bf0a367c4c9415">value_type</a>;</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#af6639f8106b78609082a4cd5e3e8ceb5"> 44</a></span> <a class="code hl_function" href="structfolly_1_1ProducerConsumerQueue.html#af6639f8106b78609082a4cd5e3e8ceb5">ProducerConsumerQueue</a>(<span class="keyword">const</span> <a class="code hl_struct" href="structfolly_1_1ProducerConsumerQueue.html">ProducerConsumerQueue</a> &amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#ac1f83f5f296f6f79583125947859b9d0"> 45</a></span> <a class="code hl_struct" href="structfolly_1_1ProducerConsumerQueue.html">ProducerConsumerQueue</a> &amp;<a class="code hl_function" href="structfolly_1_1ProducerConsumerQueue.html#ac1f83f5f296f6f79583125947859b9d0">operator=</a>(<span class="keyword">const</span> <a class="code hl_struct" href="structfolly_1_1ProducerConsumerQueue.html">ProducerConsumerQueue</a> &amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="comment">// size must be &gt;= 2.</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="comment">//</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="comment">// Also, note that the number of usable slots in the queue at any</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="comment">// given time is actually (size-1), so if you start with an empty queue,</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="comment">// isFull() will return true after size-1 insertions.</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#a3398aa33aa91bad8e0f023d2e1df8069"> 52</a></span> <span class="keyword">explicit</span> <a class="code hl_function" href="structfolly_1_1ProducerConsumerQueue.html#a3398aa33aa91bad8e0f023d2e1df8069">ProducerConsumerQueue</a>(uint32_t size)</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> : <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#ad5bf2e76bc4aad660840cbb927317d76">size_</a>(size), <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7f28bc4897019e6a4743dd22a97b33e1">records_</a>(static_cast&lt;T *&gt;(std::malloc(sizeof(T) * size))), <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">readIndex_</a>(0), <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4">writeIndex_</a>(0) {</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> assert(size &gt;= 2);</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keywordflow">if</span> (!<a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7f28bc4897019e6a4743dd22a97b33e1">records_</a>) {</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="keywordflow">throw</span> std::bad_alloc();</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> }</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> }</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> </div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#ae21044b9fe0c4345e2b7ec10cb81a18c"> 60</a></span> <a class="code hl_function" href="structfolly_1_1ProducerConsumerQueue.html#ae21044b9fe0c4345e2b7ec10cb81a18c">~ProducerConsumerQueue</a>() {</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="comment">// We need to destruct anything that may still exist in our queue.</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="comment">// (No real synchronization needed at destructor time: only one</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="comment">// thread can be doing this.)</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keywordflow">if</span> (!std::is_trivially_destructible&lt;T&gt;::value) {</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="keywordtype">size_t</span> readIndex = <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">readIndex_</a>;</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordtype">size_t</span> endIndex = <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4">writeIndex_</a>;</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keywordflow">while</span> (readIndex != endIndex) {</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7f28bc4897019e6a4743dd22a97b33e1">records_</a>[readIndex].~T();</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="keywordflow">if</span> (++readIndex == <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#ad5bf2e76bc4aad660840cbb927317d76">size_</a>) {</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> readIndex = 0;</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> }</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> }</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> }</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> std::free(<a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7f28bc4897019e6a4743dd22a97b33e1">records_</a>);</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> }</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#af849682c2351c5f2b3344e32c512a961"> 78</a></span> <span class="keyword">template</span> &lt;<span class="keyword">class</span>... Args&gt; <span class="keywordtype">bool</span> <a class="code hl_function" href="structfolly_1_1ProducerConsumerQueue.html#af849682c2351c5f2b3344e32c512a961">write</a>(Args &amp;&amp;...recordArgs) {</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <span class="keyword">auto</span> <span class="keyword">const</span> currentWrite = <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4">writeIndex_</a>.load(std::memory_order_relaxed);</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <span class="keyword">auto</span> nextRecord = currentWrite + 1;</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keywordflow">if</span> (nextRecord == <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#ad5bf2e76bc4aad660840cbb927317d76">size_</a>) {</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> nextRecord = 0;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> }</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <span class="keywordflow">if</span> (nextRecord != <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">readIndex_</a>.load(std::memory_order_acquire)) {</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="keyword">new</span> (&amp;<a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7f28bc4897019e6a4743dd22a97b33e1">records_</a>[currentWrite]) T(std::forward&lt;Args&gt;(recordArgs)...);</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4">writeIndex_</a>.store(nextRecord, std::memory_order_release);</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> }</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="comment">// queue is full</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> }</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> </div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="comment">// move (or copy) the value at the front of the queue to given variable</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#a3288ef770695d676376c80ea41630b74"> 95</a></span> <span class="keywordtype">bool</span> <a class="code hl_function" href="structfolly_1_1ProducerConsumerQueue.html#a3288ef770695d676376c80ea41630b74">read</a>(T &amp;record) {</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <span class="keyword">auto</span> <span class="keyword">const</span> currentRead = <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">readIndex_</a>.load(std::memory_order_relaxed);</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keywordflow">if</span> (currentRead == <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4">writeIndex_</a>.load(std::memory_order_acquire)) {</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// queue is empty</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> }</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">auto</span> nextRecord = currentRead + 1;</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keywordflow">if</span> (nextRecord == <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#ad5bf2e76bc4aad660840cbb927317d76">size_</a>) {</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> nextRecord = 0;</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> }</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> record = std::move(<a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7f28bc4897019e6a4743dd22a97b33e1">records_</a>[currentRead]);</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7f28bc4897019e6a4743dd22a97b33e1">records_</a>[currentRead].~T();</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">readIndex_</a>.store(nextRecord, std::memory_order_release);</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> }</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> </div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="comment">// pointer to the value at the front of the queue (for use in-place) or</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> <span class="comment">// nullptr if empty.</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#a24474b670bc44f75f7c978087e401bd0"> 114</a></span> T *<a class="code hl_function" href="structfolly_1_1ProducerConsumerQueue.html#a24474b670bc44f75f7c978087e401bd0">frontPtr</a>() {</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="keyword">auto</span> <span class="keyword">const</span> currentRead = <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">readIndex_</a>.load(std::memory_order_relaxed);</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="keywordflow">if</span> (currentRead == <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4">writeIndex_</a>.load(std::memory_order_acquire)) {</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="comment">// queue is empty</span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> }</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="keywordflow">return</span> &amp;<a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7f28bc4897019e6a4743dd22a97b33e1">records_</a>[currentRead];</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> }</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="comment">// queue must not be empty</span></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#a92e517783bcaa0102521fb739b7f5f4e"> 124</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="structfolly_1_1ProducerConsumerQueue.html#a92e517783bcaa0102521fb739b7f5f4e">popFront</a>() {</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">auto</span> <span class="keyword">const</span> currentRead = <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">readIndex_</a>.load(std::memory_order_relaxed);</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> assert(currentRead != <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4">writeIndex_</a>.load(std::memory_order_acquire));</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> </div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="keyword">auto</span> nextRecord = currentRead + 1;</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="keywordflow">if</span> (nextRecord == <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#ad5bf2e76bc4aad660840cbb927317d76">size_</a>) {</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> nextRecord = 0;</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> }</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7f28bc4897019e6a4743dd22a97b33e1">records_</a>[currentRead].~T();</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">readIndex_</a>.store(nextRecord, std::memory_order_release);</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> }</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> </div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#a7f277f7b04debc85e2f99006ac3558e8"> 136</a></span> <span class="keywordtype">bool</span> <a class="code hl_function" href="structfolly_1_1ProducerConsumerQueue.html#a7f277f7b04debc85e2f99006ac3558e8">isEmpty</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keywordflow">return</span> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">readIndex_</a>.load(std::memory_order_acquire) == <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4">writeIndex_</a>.load(std::memory_order_acquire);</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> }</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#ad883c041917c2b7f10b0ecdaeaeb0577"> 140</a></span> <span class="keywordtype">bool</span> <a class="code hl_function" href="structfolly_1_1ProducerConsumerQueue.html#ad883c041917c2b7f10b0ecdaeaeb0577">isFull</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keyword">auto</span> nextRecord = <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4">writeIndex_</a>.load(std::memory_order_acquire) + 1;</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> <span class="keywordflow">if</span> (nextRecord == <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#ad5bf2e76bc4aad660840cbb927317d76">size_</a>) {</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> nextRecord = 0;</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> }</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">if</span> (nextRecord != <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">readIndex_</a>.load(std::memory_order_acquire)) {</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> }</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="comment">// queue is full</span></div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> }</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <span class="comment">// * If called by consumer, then true size may be more (because producer may</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="comment">// be adding items concurrently).</span></div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="comment">// * If called by producer, then true size may be less (because consumer may</span></div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="comment">// be removing items concurrently).</span></div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <span class="comment">// * It is undefined to call this from any other thread.</span></div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#adb384b6a25b755b627d04ff6f2ca9c95"> 157</a></span> <span class="keywordtype">size_t</span> <a class="code hl_function" href="structfolly_1_1ProducerConsumerQueue.html#adb384b6a25b755b627d04ff6f2ca9c95">sizeGuess</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> <span class="keywordtype">int</span> ret = <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4">writeIndex_</a>.load(std::memory_order_acquire) - <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">readIndex_</a>.load(std::memory_order_acquire);</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <span class="keywordflow">if</span> (ret &lt; 0) {</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> ret += <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#ad5bf2e76bc4aad660840cbb927317d76">size_</a>;</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> }</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> <span class="keywordflow">return</span> ret;</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> }</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> </div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="comment">// maximum number of items in the queue.</span></div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#ab5966af8b6789e2ad2c215d0226fd616"> 166</a></span> <span class="keywordtype">size_t</span> <a class="code hl_function" href="structfolly_1_1ProducerConsumerQueue.html#ab5966af8b6789e2ad2c215d0226fd616">capacity</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#ad5bf2e76bc4aad660840cbb927317d76">size_</a> - 1; }</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#af9f2e0d5fb4a92eb037b630a80f521cb"> 169</a></span> <span class="keyword">using </span><a class="code hl_typedef" href="structfolly_1_1ProducerConsumerQueue.html#af9f2e0d5fb4a92eb037b630a80f521cb">AtomicIndex</a> = std::atomic&lt;unsigned int&gt;;</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> </div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#ab20193986ce865e7c2f430f706d743cf"> 171</a></span> <span class="keywordtype">char</span> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#ab20193986ce865e7c2f430f706d743cf">pad0_</a>[<a class="code hl_variable" href="ProducerConsumerQueue_8hpp.html#afcfcf0ecf646b16dd2b471dc568cf6c6">hardware_destructive_interference_size</a>];</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#ad5bf2e76bc4aad660840cbb927317d76"> 172</a></span> <span class="keyword">const</span> uint32_t <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#ad5bf2e76bc4aad660840cbb927317d76">size_</a>;</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#a7f28bc4897019e6a4743dd22a97b33e1"> 173</a></span> T *<span class="keyword">const</span> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7f28bc4897019e6a4743dd22a97b33e1">records_</a>;</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> </div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005"> 175</a></span> <span class="keyword">alignas</span>(<a class="code hl_variable" href="ProducerConsumerQueue_8hpp.html#afcfcf0ecf646b16dd2b471dc568cf6c6">hardware_destructive_interference_size</a>) <a class="code hl_typedef" href="structfolly_1_1ProducerConsumerQueue.html#af9f2e0d5fb4a92eb037b630a80f521cb">AtomicIndex</a> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">readIndex_</a>;</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4"> 176</a></span> <span class="keyword">alignas</span>(<a class="code hl_variable" href="ProducerConsumerQueue_8hpp.html#afcfcf0ecf646b16dd2b471dc568cf6c6">hardware_destructive_interference_size</a>) <a class="code hl_typedef" href="structfolly_1_1ProducerConsumerQueue.html#af9f2e0d5fb4a92eb037b630a80f521cb">AtomicIndex</a> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4">writeIndex_</a>;</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> </div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"><a class="line" href="structfolly_1_1ProducerConsumerQueue.html#a14823e2289be8649cebd813caa00d1fa"> 178</a></span> <span class="keywordtype">char</span> <a class="code hl_variable" href="structfolly_1_1ProducerConsumerQueue.html#a14823e2289be8649cebd813caa00d1fa">pad1_</a>[<a class="code hl_variable" href="ProducerConsumerQueue_8hpp.html#afcfcf0ecf646b16dd2b471dc568cf6c6">hardware_destructive_interference_size</a> - <span class="keyword">sizeof</span>(<a class="code hl_typedef" href="structfolly_1_1ProducerConsumerQueue.html#af9f2e0d5fb4a92eb037b630a80f521cb">AtomicIndex</a>)];</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span>};</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> </div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span>} <span class="comment">// namespace folly</span></div>
<div class="ttc" id="aProducerConsumerQueue_8hpp_html_afcfcf0ecf646b16dd2b471dc568cf6c6"><div class="ttname"><a href="ProducerConsumerQueue_8hpp.html#afcfcf0ecf646b16dd2b471dc568cf6c6">hardware_destructive_interference_size</a></div><div class="ttdeci">constexpr std::size_t hardware_destructive_interference_size</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:34</div></div>
<div class="ttc" id="anamespacefolly_html"><div class="ttname"><a href="namespacefolly.html">folly</a></div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:35</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html">folly::ProducerConsumerQueue</a></div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:41</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_a14823e2289be8649cebd813caa00d1fa"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#a14823e2289be8649cebd813caa00d1fa">folly::ProducerConsumerQueue::pad1_</a></div><div class="ttdeci">char pad1_[hardware_destructive_interference_size - sizeof(AtomicIndex)]</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:178</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_a24474b670bc44f75f7c978087e401bd0"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#a24474b670bc44f75f7c978087e401bd0">folly::ProducerConsumerQueue::frontPtr</a></div><div class="ttdeci">T * frontPtr()</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:114</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_a3288ef770695d676376c80ea41630b74"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#a3288ef770695d676376c80ea41630b74">folly::ProducerConsumerQueue::read</a></div><div class="ttdeci">bool read(T &amp;record)</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:95</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_a3398aa33aa91bad8e0f023d2e1df8069"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#a3398aa33aa91bad8e0f023d2e1df8069">folly::ProducerConsumerQueue::ProducerConsumerQueue</a></div><div class="ttdeci">ProducerConsumerQueue(uint32_t size)</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:52</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_a5f0ee08f1bfb4c8721c41426137e2005"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#a5f0ee08f1bfb4c8721c41426137e2005">folly::ProducerConsumerQueue::readIndex_</a></div><div class="ttdeci">AtomicIndex readIndex_</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:175</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_a7c4b68cf28e3e925ff14f5736bce59d4"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#a7c4b68cf28e3e925ff14f5736bce59d4">folly::ProducerConsumerQueue::writeIndex_</a></div><div class="ttdeci">AtomicIndex writeIndex_</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:176</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_a7f277f7b04debc85e2f99006ac3558e8"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#a7f277f7b04debc85e2f99006ac3558e8">folly::ProducerConsumerQueue::isEmpty</a></div><div class="ttdeci">bool isEmpty() const</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:136</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_a7f28bc4897019e6a4743dd22a97b33e1"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#a7f28bc4897019e6a4743dd22a97b33e1">folly::ProducerConsumerQueue::records_</a></div><div class="ttdeci">T *const records_</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:173</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_a92e517783bcaa0102521fb739b7f5f4e"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#a92e517783bcaa0102521fb739b7f5f4e">folly::ProducerConsumerQueue::popFront</a></div><div class="ttdeci">void popFront()</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:124</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_ab20193986ce865e7c2f430f706d743cf"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#ab20193986ce865e7c2f430f706d743cf">folly::ProducerConsumerQueue::pad0_</a></div><div class="ttdeci">char pad0_[hardware_destructive_interference_size]</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:171</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_ab5966af8b6789e2ad2c215d0226fd616"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#ab5966af8b6789e2ad2c215d0226fd616">folly::ProducerConsumerQueue::capacity</a></div><div class="ttdeci">size_t capacity() const</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:166</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_ab9ca59636041c88588bf0a367c4c9415"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#ab9ca59636041c88588bf0a367c4c9415">folly::ProducerConsumerQueue::value_type</a></div><div class="ttdeci">T value_type</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:42</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_ac1f83f5f296f6f79583125947859b9d0"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#ac1f83f5f296f6f79583125947859b9d0">folly::ProducerConsumerQueue::operator=</a></div><div class="ttdeci">ProducerConsumerQueue &amp; operator=(const ProducerConsumerQueue &amp;)=delete</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_ad5bf2e76bc4aad660840cbb927317d76"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#ad5bf2e76bc4aad660840cbb927317d76">folly::ProducerConsumerQueue::size_</a></div><div class="ttdeci">const uint32_t size_</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:172</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_ad883c041917c2b7f10b0ecdaeaeb0577"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#ad883c041917c2b7f10b0ecdaeaeb0577">folly::ProducerConsumerQueue::isFull</a></div><div class="ttdeci">bool isFull() const</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:140</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_adb384b6a25b755b627d04ff6f2ca9c95"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#adb384b6a25b755b627d04ff6f2ca9c95">folly::ProducerConsumerQueue::sizeGuess</a></div><div class="ttdeci">size_t sizeGuess() const</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:157</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_ae21044b9fe0c4345e2b7ec10cb81a18c"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#ae21044b9fe0c4345e2b7ec10cb81a18c">folly::ProducerConsumerQueue::~ProducerConsumerQueue</a></div><div class="ttdeci">~ProducerConsumerQueue()</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:60</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_af6639f8106b78609082a4cd5e3e8ceb5"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#af6639f8106b78609082a4cd5e3e8ceb5">folly::ProducerConsumerQueue::ProducerConsumerQueue</a></div><div class="ttdeci">ProducerConsumerQueue(const ProducerConsumerQueue &amp;)=delete</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_af849682c2351c5f2b3344e32c512a961"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#af849682c2351c5f2b3344e32c512a961">folly::ProducerConsumerQueue::write</a></div><div class="ttdeci">bool write(Args &amp;&amp;...recordArgs)</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:78</div></div>
<div class="ttc" id="astructfolly_1_1ProducerConsumerQueue_html_af9f2e0d5fb4a92eb037b630a80f521cb"><div class="ttname"><a href="structfolly_1_1ProducerConsumerQueue.html#af9f2e0d5fb4a92eb037b630a80f521cb">folly::ProducerConsumerQueue::AtomicIndex</a></div><div class="ttdeci">std::atomic&lt; unsigned int &gt; AtomicIndex</div><div class="ttdef"><b>Definition</b> ProducerConsumerQueue.hpp:169</div></div>
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