基于C++ Coroutines提案 ‘Stackless Resumable Functions’编写的协程库
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  67. <div class="title">scheduler.h</div> </div>
  68. </div><!--header-->
  69. <div class="contents">
  70. <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="preprocessor">#pragma once</span></div>
  71. <div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160; </div>
  72. <div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="keyword">namespace </span>resumef</div>
  73. <div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;{</div>
  74. <div class="line"><a name="l00010"></a><span class="lineno"><a class="line" href="structresumef_1_1scheduler__t.html"> 10</a></span>&#160; <span class="keyword">struct </span><a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a> : <span class="keyword">public</span> std::enable_shared_from_this&lt;scheduler_t&gt;</div>
  75. <div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160; {</div>
  76. <div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160; <span class="keyword">private</span>:</div>
  77. <div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160; <span class="keyword">using</span> <a class="code" href="structresumef_1_1counted__ptr.html">state_sptr</a> = <a class="code" href="structresumef_1_1counted__ptr.html">counted_ptr&lt;state_base_t&gt;</a>;</div>
  78. <div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160; <span class="keyword">using</span> state_vector = std::vector&lt;state_sptr&gt;;</div>
  79. <div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160; <span class="keyword">using</span> <a class="code" href="structresumef_1_1spinlock.html">lock_type</a> = <a class="code" href="structresumef_1_1spinlock.html">spinlock</a>;</div>
  80. <div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160; <span class="keyword">using</span> task_dictionary_type = std::unordered_map&lt;state_base_t*, std::unique_ptr&lt;task_base_t&gt;&gt;;</div>
  81. <div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; </div>
  82. <div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160; <span class="keyword">mutable</span> <a class="code" href="structresumef_1_1spinlock.html">spinlock</a> _lock_running;</div>
  83. <div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; state_vector _runing_states;</div>
  84. <div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160; state_vector _cached_states;</div>
  85. <div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160; </div>
  86. <div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; <span class="keyword">mutable</span> <a class="code" href="structresumef_1_1spinlock.html">spinlock</a> _lock_ready;</div>
  87. <div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; task_dictionary_type _ready_task;</div>
  88. <div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; </div>
  89. <div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; timer_mgr_ptr _timer;</div>
  90. <div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; </div>
  91. <div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; <span class="keywordtype">void</span> new_task(task_base_t* task);</div>
  92. <div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; <span class="comment">//void cancel_all_task_();</span></div>
  93. <div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; <span class="keyword">public</span>:</div>
  94. <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="keywordtype">void</span> <a class="code" href="structresumef_1_1scheduler__t.html#a8b396c23730b15afd345328b96dbe1cc">run_one_batch</a>();</div>
  95. <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; </div>
  96. <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keywordtype">void</span> <a class="code" href="structresumef_1_1scheduler__t.html#ae4ef2589ef2ce0335107d579b9e244a8">run_until_notask</a>();</div>
  97. <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; </div>
  98. <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="comment">//void break_all();</span></div>
  99. <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; </div>
  100. <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">class </span>_Ty</div>
  101. <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="preprocessor">#ifndef DOXYGEN_SKIP_PROPERTY</span></div>
  102. <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; COMMA_RESUMEF_ENABLE_IF(traits::is_callable_v&lt;_Ty&gt; || traits::is_future_v&lt;_Ty&gt; || traits::is_generator_v&lt;_Ty&gt;)</div>
  103. <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="preprocessor">#endif //DOXYGEN_SKIP_PROPERTY</span></div>
  104. <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; &gt;</div>
  105. <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="preprocessor">#ifndef DOXYGEN_SKIP_PROPERTY</span></div>
  106. <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; RESUMEF_REQUIRES(traits::is_callable_v&lt;_Ty&gt; || traits::is_future_v&lt;_Ty&gt; || traits::is_generator_v&lt;_Ty&gt;)</div>
  107. <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="preprocessor">#endif //DOXYGEN_SKIP_PROPERTY</span></div>
  108. <div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="structresumef_1_1scheduler__t.html#a449d34ba6a8e28284f2b02089cb7dcec"> 60</a></span>&#160; <span class="keywordtype">void</span> <a class="code" href="structresumef_1_1scheduler__t.html#a449d34ba6a8e28284f2b02089cb7dcec">operator + </a>(_Ty&amp;&amp; coro)</div>
  109. <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; {</div>
  110. <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keywordflow">if</span> constexpr (traits::is_callable_v&lt;_Ty&gt;)</div>
  111. <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; new_task(<span class="keyword">new</span> ctx_task_t&lt;_Ty&gt;(coro));</div>
  112. <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">else</span></div>
  113. <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; new_task(<span class="keyword">new</span> <a class="code" href="structresumef_1_1task__t.html">task_t&lt;_Ty&gt;</a>(coro));</div>
  114. <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; }</div>
  115. <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; </div>
  116. <div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="structresumef_1_1scheduler__t.html#a9d22640803eb9397cb844e532f4c8585"> 75</a></span>&#160; <span class="keywordtype">bool</span> <a class="code" href="structresumef_1_1scheduler__t.html#a9d22640803eb9397cb844e532f4c8585">empty</a>()<span class="keyword"> const</span></div>
  117. <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="keyword"> </span>{</div>
  118. <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; scoped_lock&lt;spinlock, spinlock&gt; __guard(_lock_ready, _lock_running);</div>
  119. <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">return</span> _ready_task.empty() &amp;&amp; _runing_states.empty() &amp;&amp; _timer-&gt;empty();</div>
  120. <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; }</div>
  121. <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; </div>
  122. <div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="structresumef_1_1scheduler__t.html#a1d369882e156db4efc1a1693acfc0e22"> 84</a></span>&#160; <a class="code" href="structresumef_1_1timer__manager.html">timer_manager</a>* <a class="code" href="structresumef_1_1scheduler__t.html#a1d369882e156db4efc1a1693acfc0e22">timer</a>() const noexcept</div>
  123. <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; {</div>
  124. <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="keywordflow">return</span> _timer.get();</div>
  125. <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; }</div>
  126. <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; </div>
  127. <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="preprocessor">#ifndef DOXYGEN_SKIP_PROPERTY</span></div>
  128. <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordtype">void</span> add_generator(<a class="code" href="structresumef_1_1state__base__t.html">state_base_t</a>* sptr);</div>
  129. <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="keywordtype">void</span> del_final(<a class="code" href="structresumef_1_1state__base__t.html">state_base_t</a>* sptr);</div>
  130. <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; std::unique_ptr&lt;task_base_t&gt; del_switch(<a class="code" href="structresumef_1_1state__base__t.html">state_base_t</a>* sptr);</div>
  131. <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keywordtype">void</span> add_switch(std::unique_ptr&lt;task_base_t&gt; task);</div>
  132. <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; </div>
  133. <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="keyword">friend</span> <span class="keyword">struct </span><a class="code" href="structresumef_1_1local__scheduler__t.html">local_scheduler_t</a>;</div>
  134. <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keyword">protected</span>:</div>
  135. <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a>();</div>
  136. <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="keyword">public</span>:</div>
  137. <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; ~<a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a>();</div>
  138. <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; </div>
  139. <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a>(<a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a>&amp;&amp; right_) = <span class="keyword">delete</span>;</div>
  140. <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a>&amp; operator = (<a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a>&amp;&amp; right_) = <span class="keyword">delete</span>;</div>
  141. <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; <a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a>(<span class="keyword">const</span> <a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a>&amp;) = <span class="keyword">delete</span>;</div>
  142. <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a>&amp; operator = (<span class="keyword">const</span> <a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a>&amp;) = <span class="keyword">delete</span>;</div>
  143. <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; </div>
  144. <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keyword">static</span> <a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a> g_scheduler;</div>
  145. <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="preprocessor">#endif //DOXYGEN_SKIP_PROPERTY</span></div>
  146. <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; };</div>
  147. <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; </div>
  148. <div class="line"><a name="l00117"></a><span class="lineno"><a class="line" href="structresumef_1_1local__scheduler__t.html"> 117</a></span>&#160; <span class="keyword">struct </span><a class="code" href="structresumef_1_1local__scheduler__t.html">local_scheduler_t</a></div>
  149. <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; {</div>
  150. <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <a class="code" href="structresumef_1_1local__scheduler__t.html#a05f60c654c1f7390682cab7cdcddb112">local_scheduler_t</a>();</div>
  151. <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; </div>
  152. <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <a class="code" href="structresumef_1_1local__scheduler__t.html#a05f60c654c1f7390682cab7cdcddb112">local_scheduler_t</a>(<a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a> &amp; sch);</div>
  153. <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; </div>
  154. <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; <a class="code" href="structresumef_1_1local__scheduler__t.html#af4c4cd1c6626930ccf891368e3f3e6ec">~local_scheduler_t</a>();</div>
  155. <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; </div>
  156. <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <a class="code" href="structresumef_1_1local__scheduler__t.html#a05f60c654c1f7390682cab7cdcddb112">local_scheduler_t</a>(<a class="code" href="structresumef_1_1local__scheduler__t.html">local_scheduler_t</a>&amp;&amp; right_) = <span class="keyword">delete</span>;</div>
  157. <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; <a class="code" href="structresumef_1_1local__scheduler__t.html">local_scheduler_t</a>&amp; operator = (<a class="code" href="structresumef_1_1local__scheduler__t.html">local_scheduler_t</a>&amp;&amp; right_) = <span class="keyword">delete</span>;</div>
  158. <div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <a class="code" href="structresumef_1_1local__scheduler__t.html#a05f60c654c1f7390682cab7cdcddb112">local_scheduler_t</a>(<span class="keyword">const</span> <a class="code" href="structresumef_1_1local__scheduler__t.html">local_scheduler_t</a>&amp;) = <span class="keyword">delete</span>;</div>
  159. <div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; <a class="code" href="structresumef_1_1local__scheduler__t.html">local_scheduler_t</a>&amp; operator = (<span class="keyword">const</span> <a class="code" href="structresumef_1_1local__scheduler__t.html">local_scheduler_t</a>&amp;) = <span class="keyword">delete</span>;</div>
  160. <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="keyword">private</span>:</div>
  161. <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; <a class="code" href="structresumef_1_1scheduler__t.html">scheduler_t</a>* _scheduler_ptr;</div>
  162. <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; };</div>
  163. <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;}</div>
  164. </div><!-- fragment --></div><!-- contents -->
  165. <div class="ttc" id="astructresumef_1_1timer__manager_html"><div class="ttname"><a href="structresumef_1_1timer__manager.html">resumef::timer_manager</a></div><div class="ttdoc">定时器管理器。</div><div class="ttdef"><b>Definition:</b> timer.h:84</div></div>
  166. <div class="ttc" id="astructresumef_1_1scheduler__t_html"><div class="ttname"><a href="structresumef_1_1scheduler__t.html">resumef::scheduler_t</a></div><div class="ttdoc">协程调度器。</div><div class="ttdef"><b>Definition:</b> scheduler.h:10</div></div>
  167. <div class="ttc" id="astructresumef_1_1local__scheduler__t_html_af4c4cd1c6626930ccf891368e3f3e6ec"><div class="ttname"><a href="structresumef_1_1local__scheduler__t.html#af4c4cd1c6626930ccf891368e3f3e6ec">resumef::local_scheduler_t::~local_scheduler_t</a></div><div class="ttdeci">~local_scheduler_t()</div><div class="ttdoc">如果当前线程绑定的调度器由local_scheduler_t所创建,则会销毁调度器,并解绑线程。</div></div>
  168. <div class="ttc" id="astructresumef_1_1scheduler__t_html_a9d22640803eb9397cb844e532f4c8585"><div class="ttname"><a href="structresumef_1_1scheduler__t.html#a9d22640803eb9397cb844e532f4c8585">resumef::scheduler_t::empty</a></div><div class="ttdeci">bool empty() const</div><div class="ttdoc">判断所有协程是否运行完毕。</div><div class="ttdef"><b>Definition:</b> scheduler.h:75</div></div>
  169. <div class="ttc" id="astructresumef_1_1scheduler__t_html_a8b396c23730b15afd345328b96dbe1cc"><div class="ttname"><a href="structresumef_1_1scheduler__t.html#a8b396c23730b15afd345328b96dbe1cc">resumef::scheduler_t::run_one_batch</a></div><div class="ttdeci">void run_one_batch()</div><div class="ttdoc">运行一批准备妥当的协程。</div></div>
  170. <div class="ttc" id="astructresumef_1_1scheduler__t_html_ae4ef2589ef2ce0335107d579b9e244a8"><div class="ttname"><a href="structresumef_1_1scheduler__t.html#ae4ef2589ef2ce0335107d579b9e244a8">resumef::scheduler_t::run_until_notask</a></div><div class="ttdeci">void run_until_notask()</div><div class="ttdoc">循环运行所有的协程,直到所有协程都运行完成。</div></div>
  171. <div class="ttc" id="astructresumef_1_1state__base__t_html"><div class="ttname"><a href="structresumef_1_1state__base__t.html">resumef::state_base_t</a></div><div class="ttdoc">state基类,state用于在协程的promise和future之间共享数据。</div><div class="ttdef"><b>Definition:</b> state.h:8</div></div>
  172. <div class="ttc" id="astructresumef_1_1scheduler__t_html_a1d369882e156db4efc1a1693acfc0e22"><div class="ttname"><a href="structresumef_1_1scheduler__t.html#a1d369882e156db4efc1a1693acfc0e22">resumef::scheduler_t::timer</a></div><div class="ttdeci">timer_manager * timer() const noexcept</div><div class="ttdoc">获得定时管理器。</div><div class="ttdef"><b>Definition:</b> scheduler.h:84</div></div>
  173. <div class="ttc" id="astructresumef_1_1counted__ptr_html"><div class="ttname"><a href="structresumef_1_1counted__ptr.html">resumef::counted_ptr</a></div><div class="ttdoc">专用与state的智能计数指针,通过管理state内嵌的引用计数来管理state的生存期。</div><div class="ttdef"><b>Definition:</b> counted_ptr.h:9</div></div>
  174. <div class="ttc" id="astructresumef_1_1spinlock_html"><div class="ttname"><a href="structresumef_1_1spinlock.html">resumef::spinlock</a></div><div class="ttdoc">一个自旋锁实现。</div><div class="ttdef"><b>Definition:</b> spinlock.h:14</div></div>
  175. <div class="ttc" id="astructresumef_1_1local__scheduler__t_html"><div class="ttname"><a href="structresumef_1_1local__scheduler__t.html">resumef::local_scheduler_t</a></div><div class="ttdoc">创建一个线程相关的调度器。</div><div class="ttdef"><b>Definition:</b> scheduler.h:117</div></div>
  176. <div class="ttc" id="astructresumef_1_1local__scheduler__t_html_a05f60c654c1f7390682cab7cdcddb112"><div class="ttname"><a href="structresumef_1_1local__scheduler__t.html#a05f60c654c1f7390682cab7cdcddb112">resumef::local_scheduler_t::local_scheduler_t</a></div><div class="ttdeci">local_scheduler_t()</div><div class="ttdoc">尽可能的创建一个线程相关的调度器。</div></div>
  177. <div class="ttc" id="astructresumef_1_1scheduler__t_html_a449d34ba6a8e28284f2b02089cb7dcec"><div class="ttname"><a href="structresumef_1_1scheduler__t.html#a449d34ba6a8e28284f2b02089cb7dcec">resumef::scheduler_t::operator+</a></div><div class="ttdeci">void operator+(_Ty &amp;&amp;coro)</div><div class="ttdoc">将一个协程加入到调度器里开始运行。</div><div class="ttdef"><b>Definition:</b> scheduler.h:60</div></div>
  178. <div class="ttc" id="astructresumef_1_1task__t_html"><div class="ttname"><a href="structresumef_1_1task__t.html">resumef::task_t</a></div><div class="ttdoc">协程任务类。</div><div class="ttdef"><b>Definition:</b> rf_task.h:34</div></div>
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