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<a href="a00059.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> // <condition_variable> -*- C++ -*-</div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> // Copyright (C) 2008-2018 Free Software Foundation, Inc.</div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> //</div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> // This file is part of the GNU ISO C++ Library. This library is free</div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> // software; you can redistribute it and/or modify it under the</div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> // terms of the GNU General Public License as published by the</div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> // Free Software Foundation; either version 3, or (at your option)</div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> // any later version.</div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> // This library is distributed in the hope that it will be useful,</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> // but WITHOUT ANY WARRANTY; without even the implied warranty of</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> // GNU General Public License for more details.</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> // Under Section 7 of GPL version 3, you are granted additional</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> // permissions described in the GCC Runtime Library Exception, version</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> // 3.1, as published by the Free Software Foundation.</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> // You should have received a copy of the GNU General Public License and</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> // a copy of the GCC Runtime Library Exception along with this program;</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> // <http://www.gnu.org/licenses/>.</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> /** @file include/condition_variable</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  * This is a Standard C++ Library header.</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  */</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> #ifndef _GLIBCXX_CONDITION_VARIABLE</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> #define _GLIBCXX_CONDITION_VARIABLE 1</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> #pragma GCC system_header</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> #if __cplusplus < 201103L</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> # include <bits/c++0x_warning.h></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> #else</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> #include <chrono></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> #include <bits/std_mutex.h></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> #include <ext/concurrence.h></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> #include <bits/alloc_traits.h></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> #include <bits/allocator.h></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> #include <bits/unique_ptr.h></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> #include <bits/shared_ptr.h></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> #include <bits/cxxabi_forced.h></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1)</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> namespace std _GLIBCXX_VISIBILITY(default)</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> {</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</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>  * @defgroup condition_variables Condition Variables</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  * @ingroup concurrency</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  *</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  * Classes for condition_variable support.</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  * @{</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  */</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  /// cv_status</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  enum class cv_status { no_timeout, timeout };</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  /// condition_variable</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  class condition_variable</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  {</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  typedef chrono::system_clock __clock_t;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  typedef __gthread_cond_t __native_type;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> #ifdef __GTHREAD_COND_INIT</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  __native_type _M_cond = __GTHREAD_COND_INIT;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> #else</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  __native_type _M_cond;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> #endif</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  public:</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  typedef __native_type* native_handle_type;</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  condition_variable() noexcept;</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  ~condition_variable() noexcept;</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>  condition_variable(const condition_variable&) = delete;</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  condition_variable& operator=(const condition_variable&) = delete;</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>  void</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  notify_one() noexcept;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  void</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  notify_all() noexcept;</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  void</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  wait(unique_lock<mutex>& __lock) noexcept;</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  template<typename _Predicate></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  void</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  wait(unique_lock<mutex>& __lock, _Predicate __p)</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  {</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  while (!__p())</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  wait(__lock);</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  template<typename _Duration></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  cv_status</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  wait_until(unique_lock<mutex>& __lock,</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  const chrono::time_point<__clock_t, _Duration>& __atime)</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  { return __wait_until_impl(__lock, __atime); }</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  template<typename _Clock, typename _Duration></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  cv_status</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  wait_until(unique_lock<mutex>& __lock,</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  const chrono::time_point<_Clock, _Duration>& __atime)</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  {</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  // DR 887 - Sync unknown clock to known clock.</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  const typename _Clock::time_point __c_entry = _Clock::now();</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  const __clock_t::time_point __s_entry = __clock_t::now();</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  const auto __delta = __atime - __c_entry;</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  const auto __s_atime = __s_entry + __delta;</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  return __wait_until_impl(__lock, __s_atime);</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  template<typename _Clock, typename _Duration, typename _Predicate></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  bool</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  wait_until(unique_lock<mutex>& __lock,</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  const chrono::time_point<_Clock, _Duration>& __atime,</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  _Predicate __p)</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  {</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  while (!__p())</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  if (wait_until(__lock, __atime) == cv_status::timeout)</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  return __p();</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  return true;</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  }</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  template<typename _Rep, typename _Period></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  cv_status</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  wait_for(unique_lock<mutex>& __lock,</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  const chrono::duration<_Rep, _Period>& __rtime)</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  {</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  using __dur = typename __clock_t::duration;</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  auto __reltime = chrono::duration_cast<__dur>(__rtime);</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  if (__reltime < __rtime)</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  ++__reltime;</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  return wait_until(__lock, __clock_t::now() + __reltime);</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  }</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  template<typename _Rep, typename _Period, typename _Predicate></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  bool</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  wait_for(unique_lock<mutex>& __lock,</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  const chrono::duration<_Rep, _Period>& __rtime,</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  _Predicate __p)</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  {</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  using __dur = typename __clock_t::duration;</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  auto __reltime = chrono::duration_cast<__dur>(__rtime);</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  if (__reltime < __rtime)</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  ++__reltime;</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  return wait_until(__lock, __clock_t::now() + __reltime, std::move(__p));</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  native_handle_type</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  native_handle()</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  { return &_M_cond; }</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  private:</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  template<typename _Dur></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  cv_status</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  __wait_until_impl(unique_lock<mutex>& __lock,</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  const chrono::time_point<__clock_t, _Dur>& __atime)</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  {</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  auto __s = chrono::time_point_cast<chrono::seconds>(__atime);</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  auto __ns = chrono::duration_cast<chrono::nanoseconds>(__atime - __s);</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  __gthread_time_t __ts =</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  {</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  static_cast<std::time_t>(__s.time_since_epoch().count()),</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  static_cast<long>(__ns.count())</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  };</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  __gthread_cond_timedwait(&_M_cond, __lock.mutex()->native_handle(),</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  &__ts);</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  return (__clock_t::now() < __atime</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  ? cv_status::no_timeout : cv_status::timeout);</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  }</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  };</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  void</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  notify_all_at_thread_exit(condition_variable&, unique_lock<mutex>);</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  struct __at_thread_exit_elt</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  {</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  __at_thread_exit_elt* _M_next;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  void (*_M_cb)(void*);</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  };</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> </div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  inline namespace _V2 {</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  /// condition_variable_any</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  // Like above, but mutex is not required to have try_lock.</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  class condition_variable_any</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  {</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  typedef chrono::system_clock __clock_t;</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  condition_variable _M_cond;</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  shared_ptr<mutex> _M_mutex;</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  // scoped unlock - unlocks in ctor, re-locks in dtor</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  template<typename _Lock></div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  struct _Unlock</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  {</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  explicit _Unlock(_Lock& __lk) : _M_lock(__lk) { __lk.unlock(); }</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  ~_Unlock() noexcept(false)</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  {</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  if (uncaught_exception())</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  {</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  __try</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  { _M_lock.lock(); }</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  __catch(const __cxxabiv1::__forced_unwind&)</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  { __throw_exception_again; }</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  __catch(...)</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  { }</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  }</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  else</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  _M_lock.lock();</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  }</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  _Unlock(const _Unlock&) = delete;</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  _Unlock& operator=(const _Unlock&) = delete;</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span> </div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  _Lock& _M_lock;</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  };</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span> </div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  public:</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  condition_variable_any() : _M_mutex(std::make_shared<mutex>()) { }</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  ~condition_variable_any() = default;</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span> </div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  condition_variable_any(const condition_variable_any&) = delete;</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  condition_variable_any& operator=(const condition_variable_any&) = delete;</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  void</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  notify_one() noexcept</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  {</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  lock_guard<mutex> __lock(*_M_mutex);</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  _M_cond.notify_one();</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  }</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  void</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  notify_all() noexcept</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  {</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  lock_guard<mutex> __lock(*_M_mutex);</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  _M_cond.notify_all();</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  }</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span> </div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  template<typename _Lock></div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  void</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  wait(_Lock& __lock)</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  {</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  shared_ptr<mutex> __mutex = _M_mutex;</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  unique_lock<mutex> __my_lock(*__mutex);</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  _Unlock<_Lock> __unlock(__lock);</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  // *__mutex must be unlocked before re-locking __lock so move</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  // ownership of *__mutex lock to an object with shorter lifetime.</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  unique_lock<mutex> __my_lock2(std::move(__my_lock));</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  _M_cond.wait(__my_lock2);</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  }</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span> </div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span> </div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  template<typename _Lock, typename _Predicate></div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  void</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  wait(_Lock& __lock, _Predicate __p)</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  {</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  while (!__p())</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  wait(__lock);</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  }</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  template<typename _Lock, typename _Clock, typename _Duration></div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  cv_status</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  wait_until(_Lock& __lock,</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  const chrono::time_point<_Clock, _Duration>& __atime)</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  {</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  shared_ptr<mutex> __mutex = _M_mutex;</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  unique_lock<mutex> __my_lock(*__mutex);</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  _Unlock<_Lock> __unlock(__lock);</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  // *__mutex must be unlocked before re-locking __lock so move</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  // ownership of *__mutex lock to an object with shorter lifetime.</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  unique_lock<mutex> __my_lock2(std::move(__my_lock));</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  return _M_cond.wait_until(__my_lock2, __atime);</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  }</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span> </div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  template<typename _Lock, typename _Clock,</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  typename _Duration, typename _Predicate></div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  bool</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  wait_until(_Lock& __lock,</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  const chrono::time_point<_Clock, _Duration>& __atime,</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  _Predicate __p)</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  {</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  while (!__p())</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  if (wait_until(__lock, __atime) == cv_status::timeout)</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  return __p();</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  return true;</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  }</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span> </div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  template<typename _Lock, typename _Rep, typename _Period></div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  cv_status</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  wait_for(_Lock& __lock, const chrono::duration<_Rep, _Period>& __rtime)</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  { return wait_until(__lock, __clock_t::now() + __rtime); }</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span> </div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  template<typename _Lock, typename _Rep,</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  typename _Period, typename _Predicate></div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  bool</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  wait_for(_Lock& __lock,</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  const chrono::duration<_Rep, _Period>& __rtime, _Predicate __p)</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  { return wait_until(__lock, __clock_t::now() + __rtime, std::move(__p)); }</div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  };</div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span> </div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  } // end inline namespace</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span> </div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  // @} group condition_variables</div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span> } // namespace</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span> </div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span> #endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span> </div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span> #endif // C++11</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span> </div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span> #endif // _GLIBCXX_CONDITION_VARIABLE</div></div><!-- fragment --></div><!-- contents -->
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