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<a href="object__pool_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * distributed with this work for additional information</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * &quot;License&quot;); you may not use this file except in compliance</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * with the License. You may obtain a copy of the License at</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * Unless required by applicable law or agreed to in writing,</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * software distributed under the License is distributed on an</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> * KIND, either express or implied. See the License for the</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * specific language governing permissions and limitations</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> * under the License.</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#ifndef MXNET_COMMON_OBJECT_POOL_H_</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#define MXNET_COMMON_OBJECT_POOL_H_</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &lt;dmlc/logging.h&gt;</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &lt;cstdlib&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &lt;mutex&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &lt;utility&gt;</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacemxnet.html">mxnet</a> {</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="keyword">namespace </span>common {</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="classmxnet_1_1common_1_1ObjectPool.html"> 34</a></span>&#160;<span class="keyword">class </span><a class="code" href="classmxnet_1_1common_1_1ObjectPool.html">ObjectPool</a> {</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#aa5ff3f223210e5f3d0881c272462aedb">~ObjectPool</a>();</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span>... Args&gt;</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; T* <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#aaadcbc99eaec88191b201bad9da441c6">New</a>(Args&amp;&amp;... args);</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#a7dcdcbe9b6764cedc28a1de2fbc8dd6f">Delete</a>(T* ptr);</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keyword">static</span> <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html">ObjectPool</a>* <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#a82b4d0c3577560a4f6f62f482b125471">Get</a>();</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">static</span> std::shared_ptr&lt;ObjectPool&gt; <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#ac6e5e05a710c3f094efb4ba13d36ab89">_GetSharedRef</a>();</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keyword">struct </span>LinkedList {</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="preprocessor">#if defined(_MSC_VER)</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; T t;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; LinkedList* next{<span class="keyword">nullptr</span>};</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <span class="keyword">union </span>{</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; T t;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; LinkedList* next{<span class="keyword">nullptr</span>};</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; };</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; };</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; constexpr <span class="keyword">static</span> std::size_t kPageSize = 1 &lt;&lt; 12;</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; std::mutex m_;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; LinkedList* head_{<span class="keyword">nullptr</span>};</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; std::vector&lt;void*&gt; allocated_;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html">ObjectPool</a>();</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keywordtype">void</span> AllocateChunk();</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <a class="code" href="3rdparty_2dmlc-core_2include_2dmlc_2base_8h.html#a26529ca54834a4418b46b4a8430f678b">DISALLOW_COPY_AND_ASSIGN</a>(<a class="code" href="classmxnet_1_1common_1_1ObjectPool.html">ObjectPool</a>);</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;}; <span class="comment">// class ObjectPool</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="structmxnet_1_1common_1_1ObjectPoolAllocatable.html"> 114</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structmxnet_1_1common_1_1ObjectPoolAllocatable.html">ObjectPoolAllocatable</a> {</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span>... Args&gt;</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <span class="keyword">static</span> T* <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#aaadcbc99eaec88191b201bad9da441c6">New</a>(Args&amp;&amp;... args);</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#a7dcdcbe9b6764cedc28a1de2fbc8dd6f">Delete</a>(T* ptr);</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;}; <span class="comment">// struct ObjectPoolAllocatable</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="classmxnet_1_1common_1_1ObjectPool.html#aa5ff3f223210e5f3d0881c272462aedb"> 131</a></span>&#160;<a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#aa5ff3f223210e5f3d0881c272462aedb">ObjectPool&lt;T&gt;::~ObjectPool</a>() {</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; <span class="keywordflow">for</span> (<span class="keyword">auto</span> i : allocated_) {</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="preprocessor">#ifdef _MSC_VER</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; _aligned_free(i);</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; free(i);</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; }</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;}</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span>... Args&gt;</div><div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="classmxnet_1_1common_1_1ObjectPool.html#aaadcbc99eaec88191b201bad9da441c6"> 143</a></span>&#160;T* <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#aaadcbc99eaec88191b201bad9da441c6">ObjectPool&lt;T&gt;::New</a>(Args&amp;&amp;... args) {</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; LinkedList* ret;</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; {</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; std::lock_guard&lt;std::mutex&gt; lock{m_};</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; <span class="keywordflow">if</span> (head_-&gt;next == <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; AllocateChunk();</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; }</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; ret = head_;</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; head_ = head_-&gt;next;</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; }</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keywordflow">return</span> <span class="keyword">new</span> (<span class="keyword">static_cast&lt;</span><span class="keywordtype">void</span>*<span class="keyword">&gt;</span>(ret)) T(std::forward&lt;Args&gt;(args)...);</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;}</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00157"></a><span class="lineno"><a class="line" href="classmxnet_1_1common_1_1ObjectPool.html#a7dcdcbe9b6764cedc28a1de2fbc8dd6f"> 157</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#a7dcdcbe9b6764cedc28a1de2fbc8dd6f">ObjectPool&lt;T&gt;::Delete</a>(T* ptr) {</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; ptr-&gt;~T();</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; <span class="keyword">auto</span> linked_list_ptr = <span class="keyword">reinterpret_cast&lt;</span>LinkedList*<span class="keyword">&gt;</span>(ptr);</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; {</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; std::lock_guard&lt;std::mutex&gt; lock{m_};</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; linked_list_ptr-&gt;next = head_;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; head_ = linked_list_ptr;</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; }</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;}</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00168"></a><span class="lineno"><a class="line" href="classmxnet_1_1common_1_1ObjectPool.html#a82b4d0c3577560a4f6f62f482b125471"> 168</a></span>&#160;<a class="code" href="classmxnet_1_1common_1_1ObjectPool.html">ObjectPool&lt;T&gt;</a>* <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#a82b4d0c3577560a4f6f62f482b125471">ObjectPool&lt;T&gt;::Get</a>() {</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#ac6e5e05a710c3f094efb4ba13d36ab89">_GetSharedRef</a>().get();</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;}</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00173"></a><span class="lineno"><a class="line" href="classmxnet_1_1common_1_1ObjectPool.html#ac6e5e05a710c3f094efb4ba13d36ab89"> 173</a></span>&#160;std::shared_ptr&lt;ObjectPool&lt;T&gt; &gt; <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#ac6e5e05a710c3f094efb4ba13d36ab89">ObjectPool&lt;T&gt;::_GetSharedRef</a>() {</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; <span class="keyword">static</span> std::shared_ptr&lt;ObjectPool&lt;T&gt; &gt; inst_ptr(<span class="keyword">new</span> <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html">ObjectPool&lt;T&gt;</a>());</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; <span class="keywordflow">return</span> inst_ptr;</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160;}</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;<a class="code" href="classmxnet_1_1common_1_1ObjectPool.html">ObjectPool&lt;T&gt;::ObjectPool</a>() {</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; AllocateChunk();</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;}</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;<span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html">ObjectPool&lt;T&gt;::AllocateChunk</a>() {</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; static_assert(<span class="keyword">sizeof</span>(LinkedList) &lt;= kPageSize, <span class="stringliteral">&quot;Object too big.&quot;</span>);</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; static_assert(<span class="keyword">sizeof</span>(LinkedList) % <span class="keyword">alignof</span>(LinkedList) == 0, <span class="stringliteral">&quot;ObjectPooll Invariant&quot;</span>);</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; static_assert(<span class="keyword">alignof</span>(LinkedList) % <span class="keyword">alignof</span>(T) == 0, <span class="stringliteral">&quot;ObjectPooll Invariant&quot;</span>);</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; static_assert(kPageSize % <span class="keyword">alignof</span>(LinkedList) == 0, <span class="stringliteral">&quot;ObjectPooll Invariant&quot;</span>);</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; <span class="keywordtype">void</span>* new_chunk_ptr;</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160;<span class="preprocessor">#ifdef _MSC_VER</span></div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; new_chunk_ptr = _aligned_malloc(kPageSize, kPageSize);</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; CHECK(new_chunk_ptr != <span class="keyword">nullptr</span>) &lt;&lt; <span class="stringliteral">&quot;Allocation failed&quot;</span>;</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; <span class="keywordtype">int</span> ret = posix_memalign(&amp;new_chunk_ptr, kPageSize, kPageSize);</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; CHECK_EQ(ret, 0) &lt;&lt; <span class="stringliteral">&quot;Allocation failed&quot;</span>;</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; allocated_.emplace_back(new_chunk_ptr);</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; <span class="keyword">auto</span> new_chunk = <span class="keyword">static_cast&lt;</span>LinkedList*<span class="keyword">&gt;</span>(new_chunk_ptr);</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; <span class="keyword">auto</span> size = kPageSize / <span class="keyword">sizeof</span>(LinkedList);</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; <span class="keywordflow">for</span> (std::size_t i = 0; i &lt; size - 1; ++i) {</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; new_chunk[i].next = &amp;new_chunk[i + 1];</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; }</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; new_chunk[size - 1].next = head_;</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; head_ = new_chunk;</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160;}</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160;</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span>... Args&gt;</div><div class="line"><a name="l00209"></a><span class="lineno"><a class="line" href="structmxnet_1_1common_1_1ObjectPoolAllocatable.html#aa08281412ac1a31d485884fa5a7544ce"> 209</a></span>&#160;T* <a class="code" href="structmxnet_1_1common_1_1ObjectPoolAllocatable.html#aa08281412ac1a31d485884fa5a7544ce">ObjectPoolAllocatable&lt;T&gt;::New</a>(Args&amp;&amp;... args) {</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#a82b4d0c3577560a4f6f62f482b125471">ObjectPool&lt;T&gt;::Get</a>()-&gt;<a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#aaadcbc99eaec88191b201bad9da441c6">New</a>(std::forward&lt;Args&gt;(args)...);</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160;}</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160;</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00214"></a><span class="lineno"><a class="line" href="structmxnet_1_1common_1_1ObjectPoolAllocatable.html#a68ed487cb6de6194a4798fdbbfd04597"> 214</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structmxnet_1_1common_1_1ObjectPoolAllocatable.html#a68ed487cb6de6194a4798fdbbfd04597">ObjectPoolAllocatable&lt;T&gt;::Delete</a>(T* ptr) {</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; <a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#a82b4d0c3577560a4f6f62f482b125471">ObjectPool&lt;T&gt;::Get</a>()-&gt;<a class="code" href="classmxnet_1_1common_1_1ObjectPool.html#a7dcdcbe9b6764cedc28a1de2fbc8dd6f">Delete</a>(ptr);</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160;}</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160;</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160;} <span class="comment">// namespace common</span></div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;} <span class="comment">// namespace mxnet</span></div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;<span class="preprocessor">#endif // MXNET_COMMON_OBJECT_POOL_H_</span></div><div class="ttc" id="structmxnet_1_1common_1_1ObjectPoolAllocatable_html_a68ed487cb6de6194a4798fdbbfd04597"><div class="ttname"><a href="structmxnet_1_1common_1_1ObjectPoolAllocatable.html#a68ed487cb6de6194a4798fdbbfd04597">mxnet::common::ObjectPoolAllocatable::Delete</a></div><div class="ttdeci">static void Delete(T *ptr)</div><div class="ttdoc">Delete an existing object. </div><div class="ttdef"><b>Definition:</b> object_pool.h:214</div></div>
<div class="ttc" id="namespacemxnet_html"><div class="ttname"><a href="namespacemxnet.html">mxnet</a></div><div class="ttdoc">namespace of mxnet </div><div class="ttdef"><b>Definition:</b> api_registry.h:33</div></div>
<div class="ttc" id="classmxnet_1_1common_1_1ObjectPool_html_a82b4d0c3577560a4f6f62f482b125471"><div class="ttname"><a href="classmxnet_1_1common_1_1ObjectPool.html#a82b4d0c3577560a4f6f62f482b125471">mxnet::common::ObjectPool::Get</a></div><div class="ttdeci">static ObjectPool * Get()</div><div class="ttdoc">Get singleton instance of pool. </div><div class="ttdef"><b>Definition:</b> object_pool.h:168</div></div>
<div class="ttc" id="classmxnet_1_1common_1_1ObjectPool_html_ac6e5e05a710c3f094efb4ba13d36ab89"><div class="ttname"><a href="classmxnet_1_1common_1_1ObjectPool.html#ac6e5e05a710c3f094efb4ba13d36ab89">mxnet::common::ObjectPool::_GetSharedRef</a></div><div class="ttdeci">static std::shared_ptr&lt; ObjectPool &gt; _GetSharedRef()</div><div class="ttdoc">Get a shared ptr of the singleton instance of pool. </div><div class="ttdef"><b>Definition:</b> object_pool.h:173</div></div>
<div class="ttc" id="classmxnet_1_1common_1_1ObjectPool_html_a7dcdcbe9b6764cedc28a1de2fbc8dd6f"><div class="ttname"><a href="classmxnet_1_1common_1_1ObjectPool.html#a7dcdcbe9b6764cedc28a1de2fbc8dd6f">mxnet::common::ObjectPool::Delete</a></div><div class="ttdeci">void Delete(T *ptr)</div><div class="ttdoc">Delete an existing object. </div><div class="ttdef"><b>Definition:</b> object_pool.h:157</div></div>
<div class="ttc" id="classmxnet_1_1common_1_1ObjectPool_html_aaadcbc99eaec88191b201bad9da441c6"><div class="ttname"><a href="classmxnet_1_1common_1_1ObjectPool.html#aaadcbc99eaec88191b201bad9da441c6">mxnet::common::ObjectPool::New</a></div><div class="ttdeci">T * New(Args &amp;&amp;... args)</div><div class="ttdoc">Create new object. </div><div class="ttdef"><b>Definition:</b> object_pool.h:143</div></div>
<div class="ttc" id="3rdparty_2dmlc-core_2include_2dmlc_2base_8h_html_a26529ca54834a4418b46b4a8430f678b"><div class="ttname"><a href="3rdparty_2dmlc-core_2include_2dmlc_2base_8h.html#a26529ca54834a4418b46b4a8430f678b">DISALLOW_COPY_AND_ASSIGN</a></div><div class="ttdeci">#define DISALLOW_COPY_AND_ASSIGN(T)</div><div class="ttdoc">Disable copy constructor and assignment operator. </div><div class="ttdef"><b>Definition:</b> base.h:174</div></div>
<div class="ttc" id="structmxnet_1_1common_1_1ObjectPoolAllocatable_html_aa08281412ac1a31d485884fa5a7544ce"><div class="ttname"><a href="structmxnet_1_1common_1_1ObjectPoolAllocatable.html#aa08281412ac1a31d485884fa5a7544ce">mxnet::common::ObjectPoolAllocatable::New</a></div><div class="ttdeci">static T * New(Args &amp;&amp;... args)</div><div class="ttdoc">Create new object. </div><div class="ttdef"><b>Definition:</b> object_pool.h:209</div></div>
<div class="ttc" id="structmxnet_1_1common_1_1ObjectPoolAllocatable_html"><div class="ttname"><a href="structmxnet_1_1common_1_1ObjectPoolAllocatable.html">mxnet::common::ObjectPoolAllocatable</a></div><div class="ttdoc">Helper trait class for easy allocation and deallocation. </div><div class="ttdef"><b>Definition:</b> object_pool.h:114</div></div>
<div class="ttc" id="classmxnet_1_1common_1_1ObjectPool_html_aa5ff3f223210e5f3d0881c272462aedb"><div class="ttname"><a href="classmxnet_1_1common_1_1ObjectPool.html#aa5ff3f223210e5f3d0881c272462aedb">mxnet::common::ObjectPool::~ObjectPool</a></div><div class="ttdeci">~ObjectPool()</div><div class="ttdoc">Destructor. </div><div class="ttdef"><b>Definition:</b> object_pool.h:131</div></div>
<div class="ttc" id="classmxnet_1_1common_1_1ObjectPool_html"><div class="ttname"><a href="classmxnet_1_1common_1_1ObjectPool.html">mxnet::common::ObjectPool</a></div><div class="ttdoc">Object pool for fast allocation and deallocation. </div><div class="ttdef"><b>Definition:</b> object_pool.h:34</div></div>
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