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| <a href="thread__local_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> </div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#ifndef DMLC_THREAD_LOCAL_H_</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#define DMLC_THREAD_LOCAL_H_</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <mutex></span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "<a class="code" href="3rdparty_2dmlc-core_2include_2dmlc_2base_8h.html">./base.h</a>"</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="keyword">namespace </span><a class="code" href="namespacedmlc.html">dmlc</a> {</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// macro hanlding for threadlocal variables</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#ifdef __GNUC__</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor"> #define MX_THREAD_LOCAL __thread</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#elif __STDC_VERSION__ >= 201112L</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"> #define MX_THREAD_LOCAL _Thread_local</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#elif defined(_MSC_VER)</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor"> #define MX_THREAD_LOCAL __declspec(thread)</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#if DMLC_CXX11_THREAD_LOCAL == 0</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#pragma message("Warning: CXX11 thread_local is not formally supported")</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="classdmlc_1_1ThreadLocalStore.html"> 35</a></span> <span class="keyword">class </span><a class="code" href="classdmlc_1_1ThreadLocalStore.html">ThreadLocalStore</a> {</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="classdmlc_1_1ThreadLocalStore.html#a19fb65f0c77ddd5374e52fd6a399ab25"> 38</a></span>  <span class="keyword">static</span> T* <a class="code" href="classdmlc_1_1ThreadLocalStore.html#a19fb65f0c77ddd5374e52fd6a399ab25">Get</a>() {</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#if DMLC_CXX11_THREAD_LOCAL && DMLC_MODERN_THREAD_LOCAL == 1</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">static</span> thread_local T inst;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">return</span> &inst;</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">static</span> MX_THREAD_LOCAL T* ptr = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">if</span> (ptr == <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  ptr = <span class="keyword">new</span> T();</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="comment">// Syntactic work-around for the nvcc of the initial cuda v10.1 release,</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="comment">// which fails to compile 'Singleton()->' below. Fixed in v10.1 update 1.</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  (*Singleton()).RegisterDelete(ptr);</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  }</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">return</span> ptr;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  }</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="classdmlc_1_1ThreadLocalStore.html">ThreadLocalStore</a>() {}</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  ~<a class="code" href="classdmlc_1_1ThreadLocalStore.html">ThreadLocalStore</a>() {</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < data_.size(); ++i) {</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">delete</span> data_[i];</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  }</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">static</span> <a class="code" href="classdmlc_1_1ThreadLocalStore.html">ThreadLocalStore<T></a> *Singleton() {</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">static</span> <a class="code" href="classdmlc_1_1ThreadLocalStore.html">ThreadLocalStore<T></a> inst;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">return</span> &inst;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordtype">void</span> RegisterDelete(T *str) {</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  std::unique_lock<std::mutex> lock(mutex_);</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  data_.push_back(str);</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  lock.unlock();</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  std::mutex mutex_;</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  std::vector<T*> data_;</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> };</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> } <span class="comment">// namespace dmlc</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor">#endif // DMLC_THREAD_LOCAL_H_</span></div><div class="ttc" id="classdmlc_1_1ThreadLocalStore_html_a19fb65f0c77ddd5374e52fd6a399ab25"><div class="ttname"><a href="classdmlc_1_1ThreadLocalStore.html#a19fb65f0c77ddd5374e52fd6a399ab25">dmlc::ThreadLocalStore::Get</a></div><div class="ttdeci">static T * Get()</div><div class="ttdef"><b>Definition:</b> thread_local.h:38</div></div> |
| <div class="ttc" id="classdmlc_1_1ThreadLocalStore_html"><div class="ttname"><a href="classdmlc_1_1ThreadLocalStore.html">dmlc::ThreadLocalStore</a></div><div class="ttdoc">A threadlocal store to store threadlocal variables. Will return a thread local singleton of type T...</div><div class="ttdef"><b>Definition:</b> thread_local.h:35</div></div> |
| <div class="ttc" id="namespacedmlc_html"><div class="ttname"><a href="namespacedmlc.html">dmlc</a></div><div class="ttdoc">namespace for dmlc </div><div class="ttdef"><b>Definition:</b> array_view.h:12</div></div> |
| <div class="ttc" id="3rdparty_2dmlc-core_2include_2dmlc_2base_8h_html"><div class="ttname"><a href="3rdparty_2dmlc-core_2include_2dmlc_2base_8h.html">base.h</a></div></div> |
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