{"id":154,"date":"2025-07-16T16:26:00","date_gmt":"2025-07-16T08:26:00","guid":{"rendered":"http:\/\/www.fishq.top\/?p=154"},"modified":"2025-08-02T23:57:12","modified_gmt":"2025-08-02T15:57:12","slug":"muduo-multi-reactor","status":"publish","type":"post","link":"https:\/\/www.fishq.top\/index.php\/2025\/07\/16\/muduo-multi-reactor\/","title":{"rendered":"muduo\u5e93\u5256\u6790(1)\uff1aMulti-Reactor\u67b6\u6784\u6838\u5fc3\u601d\u60f3"},"content":{"rendered":"\n<!-- \u8df3\u52a8\u5f69\u8272\u5c45\u4e2d\u65e5\u671f + \u5c0f\u732b -->\n<div style=\"text-align:center;font-size:28px;font-weight:bold;animation:j 1.2s ease-in-out infinite,c 3s linear infinite\">2025.7.16<span style=\"margin-left:6px\">\ud83d\udc31<\/span><\/div>\n<style>@keyframes j{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes c{0%{color:#f00}16.6%{color:#ff0}33.3%{color:#0f0}50%{color:#0ff}66.6%{color:#00f}83.3%{color:#f0f}100%{color:#f00}}<\/style>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/03\/1.gif'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"190\" data-original=\"http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/03\/1.gif\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-249\"\/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001Multi-Reactor\u67b6\u6784<\/h2>\n\n\n\n<p>Multi-Reactor\u662f\u5178\u578b\u7684\u4e3b\u4eceReactor\u6a21\u578b\uff0cEventLoop\u8d1f\u8d23\u521b\u5efa\u548c\u7ba1\u7406\u591aTaskScheduler(Rector\u7ebf\u7a0b)\uff0c\u7b2c\u4e00\u4e2atask_schdulers\u30100\u3011\u662f\u4e3bRector\uff0c\u8d1f\u8d23\u76d1\u542csocket\u7684\u65b0\u8fde\u63a5 \u5176\u4ed6task_schdulers\u662f\u5b50Rector \u8d1f\u8d23\u5df2\u5efa\u7acb\u8fde\u63a5\u7684IO\u4e8b\u4ef6\uff0cAcceptor\u6a21\u5757\u5728 Main Reactor \u4e2d\u8fd0\u884c\uff0c\u8d1f\u8d23 <code>accept()<\/code> \u65b0\u8fde\u63a5\uff0c\u5e76\u901a\u8fc7\u8f6e\u8be2\u6216\u5176\u4ed6\u7b56\u7565\u5c06\u5176\u5206\u914d\u7ed9\u67d0\u4e2a Sub Reactor\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u89d2\u8272<\/th><th>\u804c\u8d23\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td><strong>Main Reactor<\/strong><\/td><td>\u53ea\u8d1f\u8d23\u76d1\u542c <code>listenfd<\/code>\uff0c\u5904\u7406\u65b0\u8fde\u63a5\u7684\u5230\u6765\uff0c\u5e76\u8c03\u7528 <code>Acceptor<\/code> \u63a5\u6536\u8fde\u63a5\u3002\u63a5\u6536\u5b8c\u6210\u540e\uff0c\u5c06\u65b0\u8fde\u63a5\u5206\u914d\u7ed9\u67d0\u4e2a Sub Reactor\u3002<\/td><\/tr><tr><td><strong>Sub Reactor<\/strong><\/td><td>\u6bcf\u4e2a Sub Reactor \u8fd0\u884c\u5728\u4e00\u4e2a\u72ec\u7acb\u7ebf\u7a0b\u4e2d\uff0c\u8d1f\u8d23\u5904\u7406\u5df2\u5efa\u7acb\u8fde\u63a5\u7684 I\/O \u4e8b\u4ef6\uff08\u8bfb\/\u5199\/\u5173\u95ed\u7b49\uff09\u3002<\/td><\/tr><tr><td><strong>Acceptor<\/strong><\/td><td>\u5728 Main Reactor \u4e2d\u8fd0\u884c\uff0c\u8d1f\u8d23 <code>accept()<\/code> \u65b0\u8fde\u63a5\uff0c\u5e76\u901a\u8fc7\u8f6e\u8be2\u6216\u5176\u4ed6\u7b56\u7565\u5c06\u5176\u5206\u914d\u7ed9\u67d0\u4e2a Sub Reactor\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/03\/image-3-1024x542.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"542\" data-original=\"http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/03\/image-3-1024x542.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-159\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>Muduo\u5e93\u6709\u4e09\u4e2a\u6838\u5fc3\u7ec4\u4ef6\u652f\u6491\u4e00\u4e2areactor\u5b9e\u73b0 [<strong>\u6301\u7eed<\/strong>] \u7684 [<strong>\u76d1\u542c<\/strong>] \u4e00\u7ec4fd\uff0c\u5e76\u6839\u636e\u6bcf\u4e2afd\u4e0a\u53d1\u751f\u7684\u4e8b\u4ef6 [<strong>\u8c03\u7528<\/strong>] \u76f8\u5e94\u7684\u5904\u7406\u51fd\u6570\u3002\u8fd9\u4e09\u4e2a\u7ec4\u4ef6\u5206\u522b\u662f<code><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">Channel<\/mark><\/strong><\/code>\u7c7b\u3001<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">Poller\/EpollPoller<\/mark><\/strong>\u7c7b\u4ee5\u53ca<code><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">EventLoop<\/mark><\/strong><\/code>\u7c7b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/03\/2.gif'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"190\" data-original=\"http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/03\/2.gif\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-250\"\/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001Channel\u7c7b<\/h2>\n\n\n\n<p><strong>Channel\u7c7b\u5176\u5b9e\u76f8\u5f53\u4e8e\u4e00\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u4fdd\u59c6\uff01<\/strong><\/p>\n\n\n\n<p>\u5728TCP\u7f51\u7edc\u7f16\u7a0b\u4e2d\uff0c\u60f3\u8981IO\u591a\u8def\u590d\u7528\u76d1\u542c\u67d0\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5c31\u8981\u628a\u8fd9\u4e2a<strong><em>fd<\/em><\/strong>\u548c<strong><em>\u8be5fd\u611f\u5174\u8da3\u7684\u4e8b\u4ef6<\/em><\/strong>\u901a\u8fc7epoll_ctl<strong>\u6ce8\u518c<\/strong>\u5230IO\u591a\u8def\u590d\u7528\u6a21\u5757\u4e0a\u3002\u5f53\u4e8b\u4ef6\u76d1\u542c\u5668\u76d1\u542c\u5230\u8be5fd\u53d1\u751f\u4e86\u67d0\u4e2a\u4e8b\u4ef6\u3002\u4e8b\u4ef6\u76d1\u542c\u5668\u8fd4\u56de [\u53d1\u751f\u4e8b\u4ef6\u7684fd\u96c6\u5408]\u4ee5\u53ca[\u6bcf\u4e2afd\u90fd\u53d1\u751f\u4e86\u4ec0\u4e48\u4e8b\u4ef6]<\/p>\n\n\n\n<p>Channel\u7c7b\u5219\u5c01\u88c5\u4e86\u4e00\u4e2a [fd] \u548c\u8fd9\u4e2a [fd\u611f\u5174\u8da3\u4e8b\u4ef6] \u4ee5\u53ca\u4e8b\u4ef6\u76d1\u542c\u5668\u76d1\u542c\u5230 [\u8be5fd\u5b9e\u9645\u53d1\u751f\u7684\u4e8b\u4ef6]\u3002\u540c\u65f6Channel\u7c7b\u8fd8\u63d0\u4f9b\u4e86<strong>\u8bbe\u7f6e<\/strong>\u8be5fd\u7684\u611f\u5174\u8da3\u4e8b\u4ef6\uff0c\u4ee5\u53ca\u5c06\u8be5fd\u53ca\u5176\u611f\u5174\u8da3\u4e8b\u4ef6<strong>\u6ce8\u518c<\/strong>\u5230\u4e8b\u4ef6\u76d1\u542c\u5668\u6216\u4ece\u4e8b\u4ef6\u76d1\u542c\u5668\u4e0a<strong>\u79fb\u9664<\/strong>\uff0c\u4ee5\u53ca<strong>\u4fdd\u5b58<\/strong>\u4e86\u8be5fd\u7684\u6bcf\u79cd\u4e8b\u4ef6\u5bf9\u5e94\u7684\u5904\u7406\u51fd\u6570\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u27282.1 Channel\u7c7b\u91cd\u8981\u6210\u5458\u53d8\u91cf<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>EventLoop* loop_; \u8fd9\u4e2afd\u5c5e\u4e8e\u54ea\u4e2aEventLoop\u5bf9\u8c61 \uff08\u540e\u9762\u4f1a\u5206\u6790EventLoop\u6a21\u5757\uff09<\/li>\n\n\n\n<li>const int &nbsp;fd_; \u8fd9\u4e2aChannel\u5bf9\u8c61\u7167\u770b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff08\u4e00\u4e2afd\u5bf9\u5e94\u4e00\u4e2aChanne;\uff09<\/li>\n\n\n\n<li>int &nbsp; &nbsp; &nbsp; &nbsp;events_; \u4ee3\u8868fd\u611f\u5174\u8da3\u7684\u4e8b\u4ef6\u7c7b\u578b\u96c6\u5408<\/li>\n\n\n\n<li>int &nbsp; &nbsp; &nbsp; &nbsp;revents_; \u4ee3\u8868\u4e8b\u4ef6\u76d1\u542c\u5668\u5b9e\u9645\u76d1\u542c\u5230\u8be5fd\u53d1\u751f\u7684\u4e8b\u4ef6\u7c7b\u578b\u96c6\u5408\uff0c\u5f53\u4e8b\u4ef6\u76d1\u542c\u5668\u76d1\u542c\u5230\u4e00\u4e2afd\u53d1\u751f\u4e86\u4ec0\u4e48\u4e8b\u4ef6\uff0c\u901a\u8fc7<code>Channel::set_revents()<\/code>\u51fd\u6570\u6765\u8bbe\u7f6erevents\u503c<\/li>\n\n\n\n<li><code>read_callback_<\/code>&nbsp;\u3001<code>write_callback_<\/code>\u3001<code>close_callback_<\/code>\u3001<code>error_callback_<\/code>\uff1a\u8fd9\u4e9b\u662fstd::function\u7c7b\u578b\uff0c\u4ee3\u8868\u7740\u8fd9\u4e2aChannel\u4e3a\u8fd9\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u4fdd\u5b58\u7684\u5404\u4e8b\u4ef6\u7c7b\u578b\u53d1\u751f\u65f6\u7684\u5904\u7406\u51fd\u6570\u3002\u6bd4\u5982\u8fd9\u4e2afd\u53d1\u751f\u4e86\u53ef\u8bfb\u4e8b\u4ef6\uff0c\u9700\u8981\u6267\u884c\u53ef\u8bfb\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\uff0c\u8fd9\u65f6\u5019Channel\u7c7b\u90fd\u66ff\u4f60\u4fdd\u7ba1\u597d\u4e86\u8fd9\u4e9b\u53ef\u8c03\u7528\u51fd\u6570\uff0c\u76f4\u63a5\u7ba1\u4fdd\u59c6\u8981\u5c31\u597d\u4e86<\/li>\n\n\n\n<li>std::weak_ptr&lt;void&gt; <em>tie_<\/em>\uff1a\u7528\u4e8e\u89e3\u51b3\u56de\u8c03\u671f\u95f4\u5bf9\u8c61\u9500\u6bc1\u7684\u95ee\u9898\uff0c\u662fmuduo\u7ebf\u7a0b\u5b89\u5168\u8bbe\u8ba1\u7684\u91cd\u8981\u4f53\u73b0<\/li>\n\n\n\n<li>&nbsp;bool <em>tied_<\/em>; \u6807\u8bb0\u662f\u5426\u5df2\u7ed1\u5b9a\u6240\u6709\u8005<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u27282.2 Channel\u7c7b\u91cd\u8981\u6210\u5458\u51fd\u6570<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u5411Channel\u5bf9\u8c61\u6ce8\u518c\u5404\u7c7b\u4e8b\u4ef6\u7684\u56de\u8c03\u5904\u7406\u51fd\u6570<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>  void setReadCallback(ReadEventCallback cb)\n  { readCallback_ = std::move(cb); }\n  void setWriteCallback(EventCallback cb)\n  { writeCallback_ = std::move(cb); }\n  void setCloseCallback(EventCallback cb)\n  { closeCallback_ = std::move(cb); }\n  void setErrorCallback(EventCallback cb)\n  { errorCallback_ = std::move(cb); }<\/code><\/pre>\n\n\n\n<p>\u4e00\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u4f1a\u53d1\u751f\u53ef\u8bfb\u3001\u53ef\u5199\u3001\u5173\u95ed\u3001\u9519\u8bef\u4e8b\u4ef6\u3002\u5f53\u53d1\u751f\u8fd9\u4e9b\u4e8b\u4ef6\u540e\uff0c\u5c31\u9700\u8981\u8c03\u7528\u76f8\u5e94\u7684\u5904\u7406\u51fd\u6570\u6765\u5904\u7406\u3002\u5916\u90e8\u901a\u8fc7\u8c03\u7528\u4e0a\u9762\u8fd9\u56db\u4e2a\u51fd\u6570\u53ef\u4ee5\u5c06\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u653e\u8fdbChannel\u7c7b\u4e2d\uff0c\u5f53\u9700\u8981\u8c03\u7528\u7684\u65f6\u5019\u5c31\u53ef\u4ee5\u76f4\u63a5\u62ff\u51fa\u6765\u8c03\u7528\u4e86\u3002<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u5c06Channel\u4e2d\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u53ca\u5176\u611f\u5174\u8da3\u4e8b\u4ef6 \u6ce8\u518c\u5230\u4e8b\u4ef6\u76d1\u542c\u5668\u4e0a\u6216\u4ece\u4e8b\u4ef6\u76d1\u542c\u5668\u4e0a\u79fb\u9664<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>  void enableReading() { events_ |= kReadEvent; update(); }\n  void disableReading() { events_ &amp;= ~kReadEvent; update(); }\n  void enableWriting() { events_ |= kWriteEvent; update(); }\n  void disableWriting() { events_ &amp;= ~kWriteEvent; update(); }\n  void disableAll() { events_ = kNoneEvent; update(); }<\/code><\/pre>\n\n\n\n<p>\u5916\u90e8\u901a\u8fc7\u8fd9\u51e0\u4e2a\u51fd\u6570\u6765\u544a\u77e5Channel\u4f60\u6240\u76d1\u7ba1\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u90fd\u5bf9\u54ea\u4e9b\u4e8b\u4ef6\u7c7b\u578b\u611f\u5174\u8da3\uff0c\u5e76<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u628a\u8fd9\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u53ca\u5176\u611f\u5174\u8da3\u4e8b\u4ef6\u5c01\u88c5\u6210Channel\u7136\u540e\u6ce8\u518c\u5230\u4e8b\u4ef6\u76d1\u542c\u5668\uff08IO\u591a\u8def\u590d\u7528\u6a21\u5757\uff09\u4e0a<\/mark><\/strong>\u3002\u4e0a\u9762\u8fd9\u4e9b\u51fd\u6570\u91cc\u9762\u90fd\u6709\u4e00\u4e2a<code>update()<\/code>\u79c1\u6709\u6210\u5458\u65b9\u6cd5\uff0cupdate\u51fd\u6570\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void Channel::update()\n{\n  addedToLoop_ = true;\n  loop_-&gt;updateChannel(this);\n}\nvoid EventLoop::updateChannel(Channel* channel)\n{\n  assert(channel-&gt;ownerLoop() == this);\n  assertInLoopThread();\n  poller_-&gt;updateChannel(channel);\n}<\/code><\/pre>\n\n\n\n<p>\u8c03\u7528\u6d41\u7a0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Channel\u5c42\u8c03\u7528(\u5982enableReading)-&gt;EventLoop\u5c42updateChannel-&gt;\u591a\u6001\u8c03\u7528\u5177\u4f53\u7684Poller\u6267\u884cupdateChannel<\/code><\/pre>\n\n\n\n<p>\u6700\u540e\u7684EpollPoller\u7684updateChannel\u91cc\u9762\u672c\u8d28\u4e0a\u662f\u8c03\u7528\u4e86<code>epoll_ctl()<\/code>\u3002<\/p>\n\n\n\n<p>\u7ed3\u5408\u4e0b\u9762\u7684\u56fe\u53ef\u4ee5\u66f4\u597d\u7684\u7406\u89e3\u6211\u4eec\u8c03\u7528Channel::enableReading\u548c\u5176\u4ed6\u8bbe\u7f6e\u611f\u5174\u8da3\u7c7b\u578b\u7684\u51fd\u6570\u76ee\u524d\u662f\u5728\u54ea\u4e00\u5c42\u3002\u5728\u201c\u27284.3 \u68b3\u7406EventLoop\u3001Channel\u3001Poller<strong>\u5728\u6574\u4e2aMulti-Reactor\u901a\u4fe1\u67b6\u6784\u4e2d\u7684\u89d2\u8272<\/strong>\u201d\u4f1a\u8fdb\u884c\u4e00\u4e2a\u603b\u7ed3<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/05\/image.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"568\" height=\"639\" data-original=\"http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/05\/image.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-807\" style=\"width:568px;height:auto\"  sizes=\"auto, (max-width: 568px) 100vw, 568px\" \/><\/div><\/figure>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u76d1\u542c\u5230\u4e8b\u4ef6\u540e \u5c06\u4e8b\u4ef6\u5c01\u88c5\u5230Channel\u4e2d<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void <em>set_revents<\/em>(int revt) { <em>revents_<\/em> = revt; }<\/code><\/pre>\n\n\n\n<p>\u5f53\u4e8b\u4ef6\u76d1\u542c\u5668\u76d1\u542c\u5230\u67d0\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u53d1\u751f\u4e86\u4ec0\u4e48\u4e8b\u4ef6\uff0c\u901a\u8fc7\u8fd9\u4e2a\u51fd\u6570\u53ef\u4ee5\u5c06\u8fd9\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u5b9e\u9645\u53d1\u751f\u7684\u4e8b\u4ef6\u5c01\u88c5\u8fdb\u8fd9\u4e2aChannel\u4e2d\uff0c\u8fdb\u884c\u8d4b\u503c<strong>revents_<\/strong>\u6210\u5458\u53d8\u91cf\uff0c\u4f9b\u540e\u9762handleEvent\u4f7f\u7528\u3002<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">epoll\u53d1\u751f\u4e8b\u4ef6\u540e\u4ea4\u7531Cahnnel::handleEvent\u5904\u7406<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void handleEvent(Timestamp receiveTime);<\/code><\/pre>\n\n\n\n<p>\u5f53\u8c03\u7528<code>epoll_wait()<\/code>\u540e\uff0c\u53ef\u4ee5\u5f97\u77e5\u4e8b\u4ef6\u76d1\u542c\u5668\u4e0a\u54ea\u4e9bChannel\uff08\u6587\u4ef6\u63cf\u8ff0\u7b26\uff09\u53d1\u751f\u4e86\u54ea\u4e9b\u4e8b\u4ef6\uff0c\u4e8b\u4ef6\u53d1\u751f\u540e\u81ea\u7136\u5c31\u8981\u8c03\u7528\u8fd9\u4e9bChannel\u5bf9\u5e94\u7684\u5904\u7406\u51fd\u6570\u3002&nbsp;<code>Channel::handleEvent<\/code>\uff0c\u8ba9\u6bcf\u4e2a\u53d1\u751f\u4e86\u4e8b\u4ef6\u7684Channel\u8c03\u7528\u81ea\u5df1\u4fdd\u7ba1\u7684\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u3002\u6bcf\u4e2aChannel\u4f1a\u6839\u636e\u81ea\u5df1\u6587\u4ef6\u63cf\u8ff0\u7b26\u5b9e\u9645\u53d1\u751f\u7684\u4e8b\u4ef6\uff08\u901a\u8fc7Channel\u4e2d\u7684<code>revents_<\/code>\u53d8\u91cf\u5f97\u77e5\uff09\u548c\u611f\u5174\u8da3\u7684\u4e8b\u4ef6\uff08\u901a\u8fc7Channel\u4e2d\u7684<code>events_<\/code>\u53d8\u91cf\u5f97\u77e5\uff09\u6765\u9009\u62e9\u8c03\u7528<code>read_callback_<\/code>\u548c\/\u6216<code>write_callback_<\/code>\u548c\/\u6216<code>close_callback_<\/code>\u548c\/\u6216<code>error_callback_<\/code>\uff0c\u540c\u65f6\u4f7f\u7528<code>tie_<\/code>\u673a\u5236\u786e\u4fdd\u5728\u5904\u7406\u4e8b\u4ef6\u671f\u95f4Channel\u7684\u6240\u6709\u8005\u5bf9\u8c61\u4e0d\u4f1a\u88ab\u9500\u6bc1\u3002<\/p>\n\n\n\n<p>receiveTime\u53c2\u6570\u662f\u4e00\u4e2aTimestamp\u7c7b\u578b\u53c2\u6570\uff0c\u8868\u793a\u4e8b\u4ef6\u53d1\u751f\u7684\u65f6\u95f4\u6233\uff0c\u4e3b\u8981\u7528\u4e8e\u4f20\u9012\u7ed9readCallback_\uff0c\u8ba9\u5e94\u7528\u5c42\u77e5\u9053\u4e8b\u4ef6\u53d1\u751f\u7684\u51c6\u786e\u65f6\u95f4\uff0c\u5728\u65e5\u5fd7\u8bb0\u5f55\u548c\u6027\u80fd\u5206\u6790\u4e2d\u5f88\u6709\u7528<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Channel::handleEvent\u5185\u90e8\u5b9e\u9645\u8c03\u7528\u5904\u7406\u7684\u51fd\u6570<\/mark><\/strong>handleEventWithGuard<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void Channel::handleEventWithGuard(Timestamp receiveTime)<\/code><\/pre>\n\n\n\n<p>&nbsp;<code>Channel::handleEvent<\/code>\u51fd\u6570\u5185\u90e8\u4f1a\u53bb\u8c03\u7528\u8fd9\u4e2a\u51fd\u6570\uff0c\u5b83\u662f\u662f\u5b9e\u9645\u6267\u884c\u4e8b\u4ef6\u5904\u7406\u7684\u5185\u90e8\u51fd\u6570\u3002\u5904\u7406\u7684\u4e8b\u4ef6\u7c7b\u578b\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>POLLOUT: \u53ef\u5199\u4e8b\u4ef6\uff0c\u8c03\u7528writeCallback_<\/li>\n\n\n\n<li>POLLHUP: \u8fde\u63a5\u6302\u8d77\u4e8b\u4ef6\uff0c\u8c03\u7528closeCallback_<\/li>\n\n\n\n<li>POLLERR\/POLLNVAL: \u9519\u8bef\u4e8b\u4ef6\uff0c\u8c03\u7528errorCallback_<\/li>\n\n\n\n<li>POLLIN\/POLLPRI\/POLLRDHUP: \u53ef\u8bfb\u4e8b\u4ef6\uff0c\u8c03\u7528readCallback_<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u27282.3 <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Channel\u7c7b\u7684tie\u673a\u5236\u4ee5\u53ca\u6574\u4e2a\u751f\u547d\u5468\u671f<\/mark><\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>std::weak_ptr&lt;void&gt; tie_\uff1a\u7528\u4e8e\u89e3\u51b3\u56de\u8c03\u671f\u95f4\u5bf9\u8c61\u9500\u6bc1\u7684\u95ee\u9898\uff0c\u662fmuduo\u7ebf\u7a0b\u5b89\u5168\u8bbe\u8ba1\u7684\u91cd\u8981\u4f53\u73b0\nbool tied_; \u6807\u8bb0\u662f\u5426\u5df2\u7ed1\u5b9a\u6240\u6709\u8005\nvoid Channel::tie(const std::shared_ptr&lt;void&gt;&amp; obj)\n{\n  tie_ = obj;  \/\/ \u4fdd\u5b58\u4e3aweak_ptr\n  tied_ = true; \/\/ \u6807\u8bb0\u5df2\u7ed1\u5b9a\n}<\/code><\/pre>\n\n\n\n<p>tie_\u662f\u4e00\u4e2astd::weak_ptr\uff0c\u7528\u4e8e\u5f31\u5f15\u7528\u6301\u6709\u8be5Channel\u7684\u5bf9\u8c61\uff0c\u4e3b\u8981\u76ee\u7684\u662f<strong><em>\u9632\u6b62\u5728\u4e8b\u4ef6\u56de\u8c03\u671f\u95f4\u5bf9\u8c61\u88ab\u610f\u5916\u9500\u6bc1<\/em><\/strong>\uff0c\u901a\u8fc7weak_ptr\u53ef\u4ee5<strong><em>\u5b89\u5168\u5730\u68c0\u67e5\u5bf9\u8c61\u662f\u5426\u8fd8\u5b58\u5728<\/em><\/strong><\/p>\n\n\n\n<p>tie\u673a\u5236\u4e3b\u8981\u901a\u8fc7std::weak_ptr tie_\u548cbool tied_\u8fd8\u6709void Channel::tie\u51fd\u6570\u5b9e\u73b0\u7684<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53Channel\u9700\u8981\u5904\u7406\u4e8b\u4ef6\u65f6\uff0c\u4f1a\u5148\u5c1d\u8bd5\u5c06weak_ptr\u63d0\u5347\u4e3ashared_ptr\uff08\u5f3a\u5f15\u7528\uff09<\/li>\n\n\n\n<li>\u5982\u679c\u63d0\u5347\u6210\u529f\uff0c\u8bf4\u660e\u5bf9\u8c61\u4ecd\u7136\u5b58\u5728\uff0c\u53ef\u4ee5\u5b89\u5168\u6267\u884c\u56de\u8c03<\/li>\n\n\n\n<li>\u5982\u679c\u63d0\u5347\u5931\u8d25\uff0c\u8bf4\u660e\u5bf9\u8c61\u5df2\u88ab\u9500\u6bc1\uff0c\u8df3\u8fc7\u56de\u8c03\u6267\u884c<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">\u4e3a\u4ec0\u4e48\u9700\u8981tie\uff0c\u53ef\u4ee5\u770b\u4e00\u4e2a\u573a\u666f\uff1a<\/mark><\/strong><\/p>\n\n\n\n<p>\u5982\u679c\u6ca1\u6709tie<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void TcpConnection::handleRead(Timestamp receiveTime) {\n    \/\/ ... existing code ...\n    messageCallback_(this, &amp;inputBuffer_, receiveTime); \/\/ \u4f7f\u7528\u88f8\u6307\u9488this\n    \/\/ \u5982\u679c\u56de\u8c03\u671f\u95f4\u5bf9\u8c61\u88ab\u9500\u6bc1\uff0c\u540e\u7eed\u4ee3\u7801\u5c06\u8bbf\u95ee\u975e\u6cd5\u5185\u5b58\n}<\/code><\/pre>\n\n\n\n<p>\u7ebf\u7a0bA\u6267\u884c\u6d88\u606f\u56de\u8c03\uff1a\u8fdb\u884c\u8c03\u7528messageCallback_\u51fd\u6570\uff0c\u800c\u540c\u65f6\u7ebf\u7a0bB\u540c\u65f6\u9500\u6bc1TcpConnection\u5bf9\u8c61\uff0c\u56de\u8c03\u8fd4\u56de\u540e\u7ee7\u7eed\u6267\u884c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>if (n == 0) {\n    handleClose(); \/\/ \u8bbf\u95ee\u5df2\u91ca\u653e\u7684\u6210\u5458\u53d8\u91cf\n}<\/code><\/pre>\n\n\n\n<p>\u5bfc\u81f4\u7684\u540e\u679c\uff1a\u8bbf\u95ee\u5df2\u91ca\u653e\u5185\u5b58\u5bfc\u81f4\u6bb5\u9519\u8bef\uff0c\u865a\u51fd\u6570\u8868\u88ab\u7834\u574f\u5bfc\u81f4\u7a0b\u5e8f\u5d29\u6e83\uff0c\u6570\u636e\u7ade\u4e89\u5bfc\u81f4\u4e0d\u53ef\u9884\u6d4b\u884c\u4e3a<\/p>\n\n\n\n<p>\u800c\u5982\u679c\u6709tie\u673a\u5236\u7684\u8bdd\u5219\u4f1a<strong><em>\u901a\u8fc7shared_ptr\u7684\u5f3a\u5f15\u7528\u4fdd\u8bc1\u56de\u8c03\u671f\u95f4\u5bf9\u8c61\u5b58\u6d3b<\/em><\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">\u751f\u547d\u5468\u671f\u6d41\u7a0b\u7406\u89e3\uff1a<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u521b\u5efa \u2192 tie()\u7ed1\u5b9a\u6240\u6709\u8005 \u2192 \u8bbe\u7f6e\u56de\u8c03 \u2192 enableReading() \u2192 handleEvent() \u2192 remove()<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u521b\u5efa\uff1a\u6784\u9020Channel\u5bf9\u8c61\uff0c\u521d\u59cb\u5316\u6210\u5458\u53d8\u91cf<\/li>\n\n\n\n<li>tie()\u7ed1\u5b9a\uff1a\u5c06Channel\u4e0e\u62e5\u6709\u5b83\u7684\u5bf9\u8c61(\u5982TcpConnection)\u7ed1\u5b9a<\/li>\n\n\n\n<li>\u8bbe\u7f6e\u56de\u8c03\uff1a\u914d\u7f6e\u5404\u79cd\u4e8b\u4ef6\u5904\u7406\u56de\u8c03\u51fd\u6570<\/li>\n\n\n\n<li>enableReading()\uff1a\u6ce8\u518c\u8bfb\u4e8b\u4ef6\u76d1\u542c<\/li>\n\n\n\n<li>handleEvent()\uff1a\u4e8b\u4ef6\u89e6\u53d1\u65f6\u7684\u5904\u7406\u6d41\u7a0b<\/li>\n\n\n\n<li>remove()\uff1a\u4eceEventLoop\u4e2d\u6ce8\u9500Channel<\/li>\n<\/ul>\n\n\n\n<p>tie()\u4f1a\u4e0e\u5b83\u7684\u5bf9\u8c61TcpConnection\u8fdb\u884c\u7ed1\u5b9a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void TcpConnection::connectEstablished()\n{\n  loop_-&gt;assertInLoopThread();\n  assert(state_ == kConnecting);\n  setState(kConnected);\n  channel_-&gt;tie(shared_from_this());\n  channel_-&gt;enableReading();\n  connectionCallback_(shared_from_this());\n}<\/code><\/pre>\n\n\n\n<p>\u5728TCP\u8fde\u63a5\u5efa\u7acb\u5b8c\u6210\u540e\u7acb\u5373\u8c03\u7528channel_-&gt;tie(shared_from_this());\uff0c\u8fd9\u4e2a\u6b65\u9aa4\u4f7f\u7528 shared_from_this() \u83b7\u53d6\u5f53\u524d\u5bf9\u8c61\u7684\u5171\u4eab\u6307\u9488\uff0c\u7136\u540e\u5efa\u7acb\u8d77\u5efa\u7acbChannel\u4e0eTcpConnection\u7684\u751f\u547d\u5468\u671f\u5173\u8054\uff0c\u5f53epoll\u68c0\u6d4b\u5230\u4e8b\u4ef6\u65f6\uff0c\u4f1a\u8c03\u7528Channel\u7684 handleEvent()\uff0c\u8fd9\u4e2a\u51fd\u6570\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void Channel::handleEvent(Timestamp receiveTime)\n{\n  std::shared_ptr&lt;void&gt; guard;\n  if (tied_)\n  {\n    guard = tie_.lock();  \/\/ \u5c1d\u8bd5\u83b7\u53d6\u6240\u6709\u8005\u5bf9\u8c61\u7684\u5f3a\u5f15\u7528\n    if (guard)\n    {\n      handleEventWithGuard(receiveTime);\n    }\n  }\n  \/\/ ... existing code ...\n}<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u8fd9\u91cc\u9762handleEvent() \u4f1a\u5148\u5c1d\u8bd5\u63d0\u5347weak_ptr\uff0c\u68c0\u67e5\u5bf9\u8c61\u662f\u5426\u5b58\u5728\uff0c\u5982\u679c\u5b58\u5728\u7684\u8bdd\u624d\u5b89\u5168\u5730\u53bb\u8c03\u7528\u56de\u8c03\u51fd\u6570\uff0c\u540c\u65f6weak_ptr\u4e5f\u4e0d\u589e\u52a0\u5f15\u7528\u8ba1\u6570\uff0c\u4e0d\u5f71\u54cd\u6b63\u5e38\u751f\u547d\u5468\u671f\u7ba1\u7406\u3002\u8fd9\u4e2a\u8bbe\u8ba1\u633a\u79d2\u7684\uff0c<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">tie\u673a\u5236\u8bbe\u8ba1\u7684\u610f\u4e49<\/mark><\/strong><br>weak_ptr \u4e0d\u4f1a\u589e\u52a0\u5f15\u7528\u8ba1\u6570\uff0c\u4e0d\u4f1a\u963b\u6b62\u5bf9\u8c61\u9500\u6bc1\uff0c\u901a\u8fc7 lock() \u53ef\u4ee5\u5b89\u5168\u5730\u68c0\u67e5\u5bf9\u8c61\u662f\u5426\u8fd8\u5b58\u5728\uff0c\u5982\u679c\u5bf9\u8c61\u5df2\u9500\u6bc1\uff0c lock() \u4f1a\u8fd4\u56de\u7a7a\u6307\u9488\uff0c\u4ece\u800c\u8df3\u8fc7\u56de\u8c03\u6267\u884c\uff0c\u5982\u679c\u5bf9\u8c61\u5b58\u5728\uff0c\u63d0\u5347\u540e\u7684 shared_ptr \u4f1a\u4fdd\u8bc1\u56de\u8c03\u671f\u95f4\u5bf9\u8c61\u4e0d\u88ab\u9500\u6bc1\uff0c\u8fd9\u79cd\u673a\u5236\u5b8c\u7f8e\u89e3\u51b3\u4e86\u7f51\u7edc\u7f16\u7a0b\u4e2d\u5e38\u89c1\u7684&#8221;\u56de\u8c03\u671f\u95f4\u5bf9\u8c61\u9500\u6bc1&#8221;\u95ee\u9898\uff0c\u662fmuduo\u7ebf\u7a0b\u5b89\u5168\u8bbe\u8ba1\u7684\u91cd\u8981\u4f53\u73b0\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u27282.4 Channel\u7c7b\u603b\u7ed3<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u6838\u5fc3\u5b9a\u4f4d\uff1a<\/mark><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>I\/O\u4e8b\u4ef6\u5206\u53d1\u5668\uff0c\u8fde\u63a5\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e0e\u4e8b\u4ef6\u56de\u8c03\u7684\u6865\u6881<\/li>\n\n\n\n<li>\u91c7\u7528&#8221;One Channel per fd&#8221;\u8bbe\u8ba1\u539f\u5219<\/li>\n<\/ul>\n\n\n\n<p>\u5c01\u88c5\u4e86\u6587\u4ef6\u63cf\u8ff0\u7b26(fd)\u548c\u4e8b\u4ef6\u56de\u8c03\uff0c\u4e3b\u8981\u5904\u7406\u56db\u79cd\u4e8b\u4ef6\uff1a\u8bfb\u3001\u5199\u3001\u5173\u95ed\u3001\u9519\u8bef\u3002Channel\u53ef\u4ee5\u5c06\u4e8b\u4ef6\u6ce8\u518c\u5230EventLoop\u4e0a\u9762\u8868\u793a\u5173\u5fc3\u4ec0\u4e48\u4e8b\u4ef6\uff0c\u7136\u540eepoll\u90a3\u8fb9\u89e6\u53d1\u4e8b\u4ef6\u4e86\u5c31\u5230Channel\u8fd9\u8fb9\u6765\u8c03\u7528\u7279\u5b9a\u7684\u56de\u8c03\u51fd\u6570\u3002<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u4e8b\u4ef6\u6ce8\u518c\uff1a<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>enableReading()  \/\/ \u6ce8\u518c\u8bfb\u4e8b\u4ef6\nenableWriting()  \/\/ \u6ce8\u518c\u5199\u4e8b\u4ef6<\/code><\/pre>\n\n\n\n<p>\u901a\u8fc7 update() \u5c06\u4e8b\u4ef6\u540c\u6b65\u5230EPoller \u544a\u8bc9I\/O\u591a\u8def\u590d\u7528\u6a21\u5757\u5173\u5fc3\u4ec0\u4e48\u4e8b\u4ef6<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u4e8b\u4ef6\u5904\u7406\u6d41\u7a0b \uff1a<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>epoll_wait \u2192 EventLoop\u83b7\u53d6\u6d3b\u8dc3Channel \u2192 Channel::handleEvent() \u2192 \u6267\u884c\u5bf9\u5e94\u56de\u8c03<\/code><\/pre>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u56de\u8c03\u7cfb\u7edf\uff1a<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ReadEventCallback readCallback_;   \/\/ \u53ef\u8bfb\u56de\u8c03\uff08\u5e26\u65f6\u95f4\u6233\uff09\nEventCallback writeCallback_;      \/\/ \u53ef\u5199\u56de\u8c03 \nEventCallback closeCallback_;      \/\/ \u5173\u95ed\u56de\u8c03\nEventCallback errorCallback_;      \/\/ \u9519\u8bef\u56de\u8c03<\/code><\/pre>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u8bbe\u8ba1\u4eae\u70b9<\/mark><\/strong><\/p>\n\n\n\n<p>tie\u673a\u5236\u5b9e\u73b0\u901a\u8fc7shared_ptr\u7684\u5f3a\u5f15\u7528\u4fdd\u8bc1\u56de\u8c03\u671f\u95f4\u5bf9\u8c61\u5b58\u6d3b\uff0c\u907f\u514d\u51fa\u73b0&#8221;\u56de\u8c03\u671f\u95f4\u5bf9\u8c61\u9500\u6bc1&#8221;\u95ee\u9898<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u27282.5 \u4e2a\u4eba\u601d\u8003<\/h3>\n\n\n\n<p>Channel\u8fd9\u4e2a\u6a21\u5757\u770b\u8d77\u6765\u6ca1\u6709\u5f88\u5927\uff0c\u4f46\u5374\u662fmuduo\u5e93\u91cc\u9762\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u90e8\u5206\uff0c\u51e1\u662f\u548cfd\u6709\u5173\u7684\uff0c\u4ee5\u53ca\u5173\u5fc3\u7684\u4e8b\u4ef6\uff0c\u90fd\u79bb\u4e0d\u5f00\u8fd9\u4e2aChannel\u6a21\u5757\uff0c\u540e\u9762\u5f88\u591a\u90fd\u4f1a\u7528\u5230\u5b83\u3002<\/p>\n\n\n\n<p>Channel\u7684\u4f5c\u7528\u4e3b\u8981\u5c31\u662f\u628a<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-purple-color\">epoll\u7684\u5e95\u5c42\u4e8b\u4ef6\uff08EPOLLIN\/EPOLLOUT\u7b49\uff09\u5c01\u88c5\u4e3a\u9ad8\u7ea7\u7684\u8bfb\u5199\u4e8b\u4ef6\u63a5\u53e3\uff0c<\/mark>\u63d0\u4f9b\u7edf\u4e00\u7684 enableReading() \/ enableWriting() \u7b49\u65b9\u6cd5\u6765\u7ba1\u7406\u4e8b\u4ef6\u76d1\u542c\uff0c<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-purple-color\">\u6784\u5efa\u4e86\u4e00\u4e2a\u4ecb\u4e8eepoll\u548c\u4e1a\u52a1\u903b\u8f91\u4e4b\u95f4\u7684\u4e2d\u95f4\u5c42<\/mark>\uff0c\u65e2\u9690\u85cf\u4e86\u5e95\u5c42IO\u590d\u7528\u7684\u590d\u6742\u6027\u53c8\u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u4e8b\u4ef6\u5904\u7406\u80fd\u529b\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u662f\u539f\u59cb\u7684\u5355Reactor\u6ca1\u7528Channel\u7684\u8bdd\uff0c\u5219\u4f1a\u662f\u4e0b\u9762\u8fd9\u6837\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void eventLoop(int epoll_fd) {\n    struct epoll_event events&#91;MAX_EVENTS];\n    while (true) {\n        int n = epoll_wait(epoll_fd, events, MAX_EVENTS, -1);\n        for (int i = 0; i &lt; n; i++) {\n            int fd = events&#91;i].data.fd;\n            uint32_t revents = events&#91;i].events;\n            \n            \/\/ \u9700\u8981\u624b\u52a8\u5904\u7406\u5404\u79cd\u4e8b\u4ef6\u7c7b\u578b\n            if (revents &amp; EPOLLIN) {\n                \/\/ \u5904\u7406\u8bfb\u4e8b\u4ef6\n                char buf&#91;1024];\n                read(fd, buf, sizeof(buf));\n                \/\/ ...\u4e1a\u52a1\u903b\u8f91...\n            }\n            else if (revents &amp; EPOLLOUT) {\n                \/\/ \u5904\u7406\u5199\u4e8b\u4ef6\n                \/\/ ...\u4e1a\u52a1\u903b\u8f91... \n            }\n            else if (revents &amp; EPOLLERR) {\n                \/\/ \u5904\u7406\u9519\u8bef\n                close(fd);\n            }\n            \/\/ \u9700\u8981\u5904\u7406\u66f4\u591a\u4e8b\u4ef6\u7c7b\u578b...\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u8fd9\u79cd\u4ece\u4ee3\u7801\u7ec4\u7ec7\u65b9\u9762\u6765\u770b\u6240\u6709\u4e8b\u4ef6\u5904\u7406\u5728\u4e00\u4e2a\u5927\u5faa\u73af\u4e2d\uff0c\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u90fd\u6bd4\u8f83\u5dee\uff0c\u6dfb\u52a0\u65b0\u4e8b\u4ef6\u7c7b\u578b\u9700\u4fee\u6539\u4e3b\u5faa\u73af\uff0c\u800c\u4f7f\u7528Channel\u7684\u8bdd\u5219\u5c06\u4e8b\u4ef6\u5904\u7406\u5206\u6563\u5230\u5404\u56de\u8c03\u51fd\u6570\uff0c\u5404\u4e8b\u4ef6\u5904\u7406\u903b\u8f91\u9694\u79bb\uff0c\u5f53\u9700\u8981\u6dfb\u52a0\u65b0\u4e8b\u4ef6\u7c7b\u578b\u5219\u53ea\u9700\u6dfb\u52a0\u65b0\u56de\u8c03\u3002<\/p>\n\n\n\n<p>\u8fd8\u6709\u4e00\u4e2a\u662f<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-purple-color\">tie\u673a\u5236<\/mark><\/strong>\u7684\u5f15\u5165\uff0c\u8fd9\u79cd<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-purple-color\">\u7ebf\u7a0b\u5b89\u5168\u7684\u5bf9\u8c61\u751f\u547d\u5468\u671f\u7ba1\u7406<\/mark><\/strong>\u633a\u503c\u5f97\u5b66\u4e60\u7684\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/03\/3.gif'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"190\" data-original=\"http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/03\/3.gif\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-251\"\/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001Poller \/ EpollPoller\/PollPoller<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u27283.1 <strong>Poller\/EpollPoller\u6982\u8ff0<\/strong><\/h3>\n\n\n\n<p>\u8d1f\u8d23\u76d1\u542c\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e8b\u4ef6\u662f\u5426\u89e6\u53d1\u4ee5\u53ca\u8fd4\u56de\u53d1\u751f\u4e8b\u4ef6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4ee5\u53ca\u5177\u4f53\u4e8b\u4ef6\u7684\u6a21\u5757\u5c31\u662fPoller\u3002\u6240\u4ee5\u4e00\u4e2aPoller\u5bf9\u8c61\u5bf9\u5e94\u4e00\u4e2a\u4e8b\u4ef6\u76d1\u542c\u5668\u3002\u5728multi-reactor\u6a21\u578b\u4e2d\uff0c\u6709\u591a\u5c11reactor\u5c31\u6709\u591a\u5c11Poller\u3002<\/p>\n\n\n\n<p>Poller\u4f5c\u4e3a\u57fa\u7c7b\uff0c\u62bd\u8c61\u63a5\u53e3\u7c7b\uff0c\u5b9a\u4e49\u7edf\u4e00\u7684\u591a\u8def\u590d\u7528\u63a5\u53e3\uff0c\u6838\u5fc3\u804c\u8d23\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>virtual Timestamp poll(int timeoutMs, ChannelList* activeChannels) = 0;\nvirtual void updateChannel(Channel* channel) = 0;<\/code><\/pre>\n\n\n\n<p>\u5b83\u4f1a\u53bb\u63d0\u4f9b\u8de8\u5e73\u53f0\u7684\u4e8b\u4ef6\u76d1\u542c\u62bd\u8c61\uff0c\u4e0d\u76f4\u63a5\u4e0epoll\u548cepoll\u4ea4\u4e92\uff0c\u7531\u5b50\u7c7b\u5b9e\u73b0\u5177\u4f53\u673a\u5236\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Poller\uff08\u62bd\u8c61\u57fa\u7c7b\uff09\n\u251c\u2500\u2500 EPollPoller\uff08Linux epoll\u5b9e\u73b0\uff09\n\u2514\u2500\u2500 PollPoller\uff08\u4f20\u7edfpoll\u5b9e\u73b0\uff09<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u27283.<\/strong>2<strong> Poller\/EpollPoller\/PollPoller\u91cd\u8981\u6210\u5458\u53d8\u91cf<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>typedef std::map&lt;int, Channel*&gt; ChannelMap;\nChannelMap channels_;\nEventLoop* ownerLoop_;<\/code><\/pre>\n\n\n\n<p>\u57fa\u7c7bPoller\uff1a\u901a\u8fc7channels_ \u7ef4\u62a4\u7edf\u4e00\u7684Channel\u7ba1\u7406\uff0c\u7ba1\u7406\u6240\u6709\u6ce8\u518c\u7684Channel\uff08fd\u5230Channel\u7684\u6620\u5c04\uff09\uff0c\u4ee5\u53ca\u6709\u4e00\u4e2aEventLoop\u5bf9\u8c61(\u540e\u9762\u4f1a\u5c55\u5f00\u8bf4)<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>  int epollfd_;         \/\/ \u7528epoll_create\u65b9\u6cd5\u8fd4\u56de\u7684epoll\u53e5\u67c4\n  EventList events_;    \/\/ epoll_event\u6570\u7ec4\uff08\u52a8\u6001\u6269\u5bb9\uff09\n  \n\/\/ \u7ee7\u627f\u7684\u6210\u5458\uff1a\n\/\/ channels_ \u6765\u81eaPoller\u57fa\u7c7b\n\/\/ ownerLoop_ \u6765\u81eaPoller\u57fa\u7c7b<\/code><\/pre>\n\n\n\n<p>\u5b50\u7c7bEpollPoller\uff1a\u5305\u542bepoll\u6587\u4ef6\u63cf\u8ff0\u7b26\u548c\u5b58\u50a8epoll_events\u7684\u5bb9\u5668<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>  typedef std::vector&lt;struct pollfd&gt; PollFdList;\n  PollFdList pollfds_;   \/\/ pollfd\u6570\u7ec4\n  \n\/\/ \u7ee7\u627f\u7684\u6210\u5458\uff1a\n\/\/ channels_ \u6765\u81eaPoller\u57fa\u7c7b \n\/\/ ownerLoop_ \u6765\u81eaPoller\u57fa\u7c7b<\/code><\/pre>\n\n\n\n<p>\u5b50\u7c7bPollPoller\uff1a\u5305\u542b\u5b58\u50a8pollfd\u7684\u5bb9\u5668<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u27283.3<\/strong>\u5b50\u7c7b\u91cd\u8981\u7684\u6210\u5458\u51fd\u6570<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">poll\u51fd\u6570<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Timestamp poll(int timeoutMs, ChannelList* activeChannels) override;<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u51fd\u6570\u53ef\u4ee5\u8bf4\u662f<strong>Poller\u7684\u6838\u5fc3<\/strong>\u4e86\uff0c\u5728Poller\u4e2d\u8fd9\u662f\u4e00\u4e2a\u7eaf\u865a\u51fd\u6570\uff0c\u5b9a\u4e49\u4e86IO\u591a\u8def\u590d\u7528\u7684\u7edf\u4e00\u63a5\u53e3\uff0c\u53c2\u6570timeoutM\u8868\u793a\u8d85\u65f6\u65f6\u95f4(\u6beb\u79d2)\uff0cactiveChannels\u8868\u793a\u8f93\u51fa\u53c2\u6570\uff0c\u7528\u4e8e\u8fd4\u56de\u6709\u4e8b\u4ef6\u53d1\u751f\u7684Channel\u5217\u8868\uff0cChannelList\u662f\u4e00\u4e2astd::vector&lt;Channel*&gt;\u5b58\u50a8Channel\u6307\u9488\u7684\u4e00\u4e2a\u5bb9\u5668\u3002\u8fd9\u4e2a\u51fd\u6570\u4f5c\u4e3a\u62bd\u8c61\u63a5\u53e3\uff0c\u7531\u5b50\u7c7bPollPoller\u548cEpollPoller\u5b9e\u73b0\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Timestamp EPollPoller::poll(int timeoutMs, ChannelList* activeChannels)\n{\n  LOG_TRACE &lt;&lt; \"fd total count \" &lt;&lt; channels_.size();\n int numEvents = ::epoll_wait(epollfd_,      \/\/ epoll\u5b9e\u4f8b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\n                            &amp;*events_.begin(),  \/\/ \u4e8b\u4ef6\u7f13\u51b2\u533a\n                            static_cast&lt;int&gt;(events_.size()), \n                            timeoutMs);  \/\/ &lt;-- \u963b\u585e\u53c2\u6570 \u4f1a\u963b\u585etimeoutMs\u6beb\u79d2\n  int savedErrno = errno;\n  Timestamp now(Timestamp::now());\n  if (numEvents &gt; 0)\n  {\n    LOG_TRACE &lt;&lt; numEvents &lt;&lt; \" events happened\";\n    fillActiveChannels(numEvents, activeChannels);\n    if (implicit_cast&lt;size_t&gt;(numEvents) == events_.size())\n    {\n      events_.resize(events_.size()*2);\n    }\n  }\n  ......\u5269\u4f59\u4ee3\u7801\n}<\/code><\/pre>\n\n\n\n<p>\u5728\u5b50\u7c7bEpollPoller\u4e2d\uff0c\u5f53Timestamp EPollPoller::poll\u65b9\u6cd5\u88ab\u8c03\u7528\u7684\u65f6\u5019\uff0c\u5b83\u7684\u5de5\u4f5c\u6d41\u7a0b\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8c03\u7528 epoll_wait \u7b49\u5f85\u4e8b\u4ef6\u53d1\u751f<\/li>\n\n\n\n<li>\u901a\u8fc7 fillActiveChannels \u65b9\u6cd5\u5c06\u6d3b\u8dc3\u4e8b\u4ef6\u586b\u5145\u5230 activeChannels \u5bb9\u5668\u4e2d<\/li>\n\n\n\n<li>\u8fd4\u56de\u4e8b\u4ef6\u53d1\u751f\u7684\u65f6\u95f4\u6233<\/li>\n<\/ol>\n\n\n\n<p>\u8fd9\u91cc\u6709\u4e24\u4e2a\u8981\u68b3\u7406\u7684\u70b9\uff0c\u4e00\u4e2a\u662f<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u8fd9\u91cc\u7684epoll_wait\u5982\u679c\u6ee1\u8db3\u4e00\u5b9a\u6761\u4ef6\uff0c\u5b83\u662f\u4f1a\u53bb\u963b\u585e\u7684<\/mark><\/strong>\uff0c\u53ef\u4ee5\u770b\u5230\u5b83\u8bbe\u7f6e\u4e86timeoutMs\u53c2\u6570\uff0c\u53e6\u4e00\u4e2a\u8981\u7406\u7684\u662f<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">fillActiveChannels\u51fd\u6570<\/mark><\/strong>\uff0c\u5148\u770b\u770bepoll_wait\u5427<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>timeoutMs\u53c2\u6570\u662f\u6765\u81eaEventLoop\u4e0a\u5c42\u4f20\u6765\u7684 kPollTimeMs \uff0c\u9ed8\u8ba4\u503c10000ms\uff0c\u662f10s\u3002\u5f53\u4ee5\u4e0b\u60c5\u51b5\u540c\u65f6\u6ee1\u8db3\u7684\u65f6\u5019\uff0cepoll\u4f1a\u53bb\u8fdb\u884c\u963b\u585e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6ca1\u6709\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e8b\u4ef6\u53d1\u751f<\/li>\n\n\n\n<li>\u6ca1\u6709\u5176\u4ed6\u7ebf\u7a0b\u8c03\u7528wakeup()\u89e6\u53d1eventfd \uff08\u540e\u9762EventLoop\u4f1a\u8bb2\u5230\uff09<\/li>\n\n\n\n<li>\u672a\u8fbe\u5230\u8d85\u65f6\u65f6\u95f4<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code># \u573a\u666f1\uff1a\u65e0\u4e8b\u4ef6\u4e14\u65e0\u5524\u9192\npoll() -&gt; \u963b\u585e10\u79d2 -&gt; \u8d85\u65f6\u8fd4\u56de -&gt; \u5904\u7406\u7a7a\u961f\u5217activeChannels_ -&gt; \u5f00\u542f\u4e0b\u4e00\u8f6epoll()\n\n# \u573a\u666f2\uff1a\u4e2d\u9014\u6709\u5524\u9192\u4e8b\u4ef6\npoll()\u5f00\u59cb -&gt; \u963b\u585e3\u79d2\u540e\u6536\u5230\u5524\u9192 -&gt; \u7acb\u5373\u8fd4\u56de -&gt; Channel::handleEvent\u5904\u7406\u4e8b\u4ef6 -&gt; \u7ee7\u7eed\u4e0b\u4e00\u8f6epoll()<\/code><\/pre>\n\n\n\n<p>\u4e3a\u4ec0\u4e48\u8fd9\u91cc\u8981\u8bbe\u7f6e\u8fd9\u4e2aepoll\u963b\u585e\u5462\uff1f\u4e0d\u662f\u8bf4\u597d\u7684\u7f51\u7edcIO\u975e\u963b\u585e\u8bbe\u8ba1\u5417\uff1f\u5176\u5b9e\u662f\u4e0d\u51b2\u7a81\u7684\u3002<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">epoll_wait\u662f\u963b\u585e\u7684 <\/mark><\/strong>\uff08\u523b\u610f\u8bbe\u8ba1\u7528\u4e8e\u9ad8\u6548\u7b49\u5f85\u4e8b\u4ef6\uff09\uff0c<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u800csocket\u662f\u975e\u963b\u585e\u7684<\/mark><\/strong> \uff08\u901a\u8fc7 fcntl(O_NONBLOCK) \u8bbe\u7f6e\uff09\uff0csocket\u7684\u975e\u963b\u585e\u662f\u5728Socket\u5bf9\u8c61\u6784\u9020\u51fd\u6570\u7684\u65f6\u5019\u5c31\u4f1a\u53bb\u8bbe\u7f6e\u597d\u4e86\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>\u7ec4\u4ef6<\/strong><\/th><th><strong>\u963b\u585e\u7279\u6027<\/strong><\/th><th><strong class=\"\">\u8bbe\u8ba1\u76ee\u7684<\/strong><\/th><\/tr><\/thead><tbody><tr><td>epoll_wait<\/td><td>\u963b\u585e\u5f0f\u7b49\u5f85<\/td><td>\u964d\u4f4e CPU \u7a7a\u8f6c\uff0c\u9ad8\u6548\u4e8b\u4ef6\u68c0\u6d4b<\/td><\/tr><tr><td>socket I\/O<\/td><td>\u975e\u963b\u585e\u64cd\u4f5c<\/td><td>\u907f\u514d\u8fdb\u7a0b\u6302\u8d77\uff0c\u652f\u6301\u5f02\u6b65\u5904\u7406<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u589e\u52a0\u5524\u9192\u673a\u5236\u7684\u91cf\u5316\u5bf9\u6bd4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u6027\u80fd\u5bf9\u6bd4\uff08\u5047\u8bbe\u5355\u6838CPU\uff09\n| \u5524\u9192\u65b9\u5f0f     | \u5ef6\u8fdf     | CPU\u5360\u7528\u7387 |\n|------------|---------|----------|\n| \u963b\u585e10\u79d2    | 10\u79d2    | 0.1%     |\n| \u5fd9\u8f6e\u8be2      | &lt;1ms    | 100%     |<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc\u7684\u5524\u9192\u673a\u5236\u53ef\u4ee5\u770b\u4e0b\u201c\u27284.2 EventLoop\u91cd\u8981\u6210\u5458\u51fd\u6570\u201d\u6574\u7406\u7684\u5524\u9192\u673a\u5236\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u63a5\u4e0b\u6765\u662f<em style=\"font-weight: bold;\">fillActiveChannels <\/em>\u51fd\u6570\u7684\u68b3\u7406\uff1a<\/p>\n\n\n\n<p>activeChannels\u662f\u4e00\u4e2a<em>ChannelList<\/em>*\u5bf9\u8c61\uff0c\u7528\u6765\u5b58\u653e\u6d3b\u8dc3\u7684Channel<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void EPollPoller::fillActiveChannels(int numEvents,\n                                     ChannelList* activeChannels) const\n{\n  assert(implicit_cast&lt;size_t&gt;(numEvents) &lt;= events_.size());\n  for (int i = 0; i &lt; numEvents; ++i)\n  {\n    Channel* channel = static_cast&lt;Channel*&gt;(events_&#91;i].data.ptr);\n#ifndef NDEBUG\n    int fd = channel-&gt;fd();\n    ChannelMap::const_iterator it = channels_.find(fd);\n    assert(it != channels_.end());\n    assert(it-&gt;second == channel);\n#endif\n    channel-&gt;set_revents(events_&#91;i].events);\n    activeChannels-&gt;push_back(channel);\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u4e0a\u9762\u662f<em style=\"font-weight: bold;\">fillActiveChannels <\/em>\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u5b83\u7684\u53c2\u6570\u4e00\u4e2a\u662fnumEvents\u4e5f\u5c31\u662fepoll_wait\u8fd4\u56de\u7684\u6d3b\u8dc3\u4e8b\u4ef6\u6570\u91cf\uff0c\u4e00\u4e2a\u662factiveChannels\u7528\u4e8e\u5b58\u653e\u6709\u4e8b\u4ef6\u53d1\u751f\u7684Channel\u6307\u9488\u3002\u5b83\u5148\u904d\u5386 events_ \u5bb9\u5668\uff08\u5b58\u50a8epoll\u8fd4\u56de\u7684\u4e8b\u4ef6\uff09\uff0c\u5bf9\u524d numEvents \u4e2a\u6d3b\u8dc3\u4e8b\u4ef6\u8fdb\u884c\u5904\u7406\uff0c\u6bcf\u4e2a\u4e8b\u4ef6\u7684\u5904\u7406\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1\u3001\u4ece epoll_event.data.ptr \u53d6\u51fa\u5173\u8054\u7684Channel\u5bf9\u8c61<\/li>\n\n\n\n<li>2\u3001\u5c06\u4e8b\u4ef6\u7c7b\u578b\u8bbe\u7f6e\u5230Channel\u7684 revents_ \u6210\u5458 \uff08\u8fd9\u6b65\u5f88\u91cd\u8981\uff0c<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Channel\u5728handleEvent\u91cc\u5c31\u662f\u6839\u636e\u8fd9\u4e2arevents_ \u53bb\u770b\u770b\u8981\u5904\u7406\u4ec0\u4e48\u4e8b\u4ef6<\/mark><\/strong>\uff0c\u53ef\u4ee5\u56de\u770b\u4e0b\u524d\u9762\u7684Channel\u7ae0\u8282\uff09<\/li>\n\n\n\n<li>3\u3001\u5c06Channel\u6307\u9488\u52a0\u5165\u6d3b\u8dc3\u5217\u8868 activeChannels<\/li>\n<\/ul>\n\n\n\n<p>\u6574\u4f53\u5c31\u662f:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>epoll_wait \u2192 \u586b\u5145events_ \u2192 fillActiveChannels\u5904\u7406 \u2192 \u8bbe\u7f6eChannel.revents_ \u2192 \u52a0\u5165activeChannels<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">updateChannel\u51fd\u6570<\/mark><\/strong><\/p>\n\n\n\n<p>EPollPoller::updateChannel<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void EPollPoller::updateChannel(Channel* channel) {\n  \/\/ \u72b6\u6001\u5224\u65ad\u4e0e\u64cd\u4f5c\u5206\u53d1\n  const int index = channel-&gt;index();\n  if (index == kNew || index == kDeleted) { \n    \/\/ \u5904\u7406\u65b0\u6ce8\u518c\u6216\u5220\u9664\u540e\u91cd\u65b0\u6ce8\u518c\u7684 Channel\n    int fd = channel-&gt;fd();\n    if (index == kNew) {\n      assert(!channels_.count(fd)); \/\/ \u786e\u4fdd\u9996\u6b21\u6ce8\u518c\n      channels_&#91;fd] = channel;      \/\/ \u6dfb\u52a0\u5230\u6587\u4ef6\u63cf\u8ff0\u7b26\u6620\u5c04\u8868\n    }\n    channel-&gt;set_index(kAdded);     \/\/ \u66f4\u65b0\u72b6\u6001\u4e3a\u5df2\u6ce8\u518c\n    update(EPOLL_CTL_ADD, channel); \/\/ \u6267\u884c epoll_ctl \u6dfb\u52a0\u64cd\u4f5c\n  } else { \n    \/\/ \u5904\u7406\u5df2\u6709 Channel \u7684\u66f4\u65b0\n    if (channel-&gt;isNoneEvent()) {\n      update(EPOLL_CTL_DEL, channel); \/\/ \u65e0\u76d1\u542c\u4e8b\u4ef6\u5219\u79fb\u9664\n      channel-&gt;set_index(kDeleted);    \/\/ \u6807\u8bb0\u4e3a\u5df2\u5220\u9664\u72b6\u6001\n    } else {\n      update(EPOLL_CTL_MOD, channel); \/\/ \u6709\u4e8b\u4ef6\u5219\u4fee\u6539\u76d1\u542c\u7c7b\u578b\n    }\n  }\n}<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/05\/image-2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"543\" height=\"670\" data-original=\"http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/05\/image-2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-818\"  sizes=\"auto, (max-width: 543px) 100vw, 543px\" \/><\/div><\/figure>\n\n\n\n<p>\u4f5c\u4e3a\u4f4e\u5c42\u7684\u66f4\u65b0\u72b6\u6001\u7684\u51fd\u6570\uff0c\u5b83\u4f1a\u53bb\u8fdb\u884c\u72b6\u6001\u5224\u65ad\u4e0e\u64cd\u4f5c\u5206\u53d1<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>| \u64cd\u4f5c\u7c7b\u578b        | \u89e6\u53d1\u6761\u4ef6                      | \u7cfb\u7edf\u8c03\u7528         |\n|----------------|-----------------------------|-----------------|\n| EPOLL_CTL_ADD  | Channel \u9996\u6b21\u6ce8\u518c (kNew)       | epoll_ctl(ADD)  |\n| EPOLL_CTL_MOD  | \u5df2\u6ce8\u518c Channel \u4e8b\u4ef6\u7c7b\u578b\u53d8\u5316    | epoll_ctl(MOD)  | \n| EPOLL_CTL_DEL  | Channel \u53d6\u6d88\u6240\u6709\u4e8b\u4ef6\u76d1\u542c       | epoll_ctl(DEL)  |<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u65b0\u8fde\u63a5\u5efa\u7acb\u65f6\u901a\u8fc7 EPOLL_CTL_ADD \u6ce8\u518c\u8bfb\u4e8b\u4ef6<\/li>\n\n\n\n<li>\u53d1\u9001\u7f13\u51b2\u533a\u6ee1\u65f6\u901a\u8fc7 EPOLL_CTL_MOD \u6dfb\u52a0\u5199\u4e8b\u4ef6<\/li>\n\n\n\n<li>\u8fde\u63a5\u5173\u95ed\u65f6\u901a\u8fc7 EPOLL_CTL_DEL \u79fb\u9664\u76d1\u542c<\/li>\n<\/ul>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">EPollPoller::update\u51fd\u6570<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void EPollPoller::update(int operation, Channel* channel)\n{\n  struct epoll_event event;\n  memZero(&amp;event, sizeof event);\n  event.events = channel-&gt;events();\n  event.data.ptr = channel;\n  int fd = channel-&gt;fd();\n  LOG_TRACE &lt;&lt; \"epoll_ctl op = \" &lt;&lt; operationToString(operation)\n    &lt;&lt; \" fd = \" &lt;&lt; fd &lt;&lt; \" event = { \" &lt;&lt; channel-&gt;eventsToString() &lt;&lt; \" }\";\n  if (::epoll_ctl(epollfd_, operation, fd, &amp;event) &lt; 0)\n  {\n    if (operation == EPOLL_CTL_DEL)\n    {\n      LOG_SYSERR &lt;&lt; \"epoll_ctl op =\" &lt;&lt; operationToString(operation) &lt;&lt; \" fd =\" &lt;&lt; fd;\n    }\n    else\n    {\n      LOG_SYSFATAL &lt;&lt; \"epoll_ctl op =\" &lt;&lt; operationToString(operation) &lt;&lt; \" fd =\" &lt;&lt; fd;\n    }\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u4f5c\u4e3a\u6700\u4f4e\u5c42\u7684\u66f4\u65b0\u72b6\u6001\u7684\u51fd\u6570\uff0c<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u5f53Channel\u7684\u4e8b\u4ef6\u72b6\u6001\u53d8\u5316\u65f6\uff08enableReading()\/disableWriting()\uff09\uff0c\u6700\u7ec8\u4f1a\u89e6\u53d1\u8fd9\u91cc\u7684epoll\u4e8b\u4ef6\u66f4\u65b0<\/mark><\/strong><\/p>\n\n\n\n<p>\u652f\u6301\u4e09\u79cd\u64cd\u4f5c\u7c7b\u578b\uff1aEPOLL_CTL_ADD(\u589e\u52a0) \uff0cEPOLL_CTL_MOD(\u4fee\u6539) \uff0cEPOLL_CTL_DEL(\u5220\u9664)<\/p>\n\n\n\n<p>\u4f1a\u53bb\u521b\u5efaepoll_event\u7ed3\u6784\u4f53\u5e76\u586b\u5145\u4e8b\u4ef6\u6570\u636e<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>struct epoll_event event;\nevent.events = channel-&gt;events();  \/\/ \u4eceChannel\u83b7\u53d6\u5173\u6ce8\u7684\u4e8b\u4ef6\u7c7b\u578b\nevent.data.ptr = channel;          \/\/ \u5c06Channel\u5bf9\u8c61\u6307\u9488\u5173\u8054\u5230\u4e8b\u4ef6<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u27283.4 Poller\/EpollPoller\/PollPoller\u603b\u7ed3<\/h3>\n\n\n\n<p>Poller (\u62bd\u8c61\u57fa\u7c7b) \u5b9a\u4e49\u4e86IO\u591a\u8def\u590d\u7528\u7684\u7edf\u4e00\u63a5\u53e3\uff0c\u91c7\u7528\u62bd\u8c61\u57fa\u7c7b\u8bbe\u8ba1\uff0c\u5f3a\u5236\u5b50\u7c7b\u5b9e\u73b0\u5173\u952e\u65b9\u6cd5\uff0c\u7ef4\u62a4ChannelMap\uff08fd\u5230Channel\u7684\u6620\u5c04\uff09\u3002<\/p>\n\n\n\n<p>\u800c\u5b50\u7c7bEpollPoller\u548cPollPoller\u5219\u5206\u522b\u57fa\u4e8e\u4e0d\u540c\u7684\u7cfb\u7edf\u8c03\u7528\u5b9e\u73b0\u4e86\u8fd9\u4e9b\u63a5\u53e3\u529f\u80fd\uff0c\u5b83\u4eec\u4e0eEventLoop\u548cChannel\u5f62\u6210\u4e86\u7d27\u5bc6\u7684\u534f\u4f5c\u5173\u7cfb\u3002\u8fd9\u4e24\u79cd\u5b9e\u73b0\u90fd\u901a\u8fc7EventLoop\u8fdb\u884c\u7edf\u4e00\u8c03\u5ea6\uff0c\u5f53Channel\u9700\u8981\u66f4\u65b0\u76d1\u63a7\u72b6\u6001\u65f6\uff0c\u4f1a\u901a\u8fc7EventLoop::updateChannel\u65b9\u6cd5\u8f6c\u53d1\u7ed9\u5177\u4f53\u7684Poller\u5b9e\u73b0\u3002\u8fd9\u79cd\u8bbe\u8ba1\u4f7f\u5f97muduo\u80fd\u591f\u6839\u636e\u8fd0\u884c\u73af\u5883\u81ea\u52a8\u9009\u62e9\u6700\u4f18\u7684IO\u591a\u8def\u590d\u7528\u5b9e\u73b0\uff0c\u540c\u65f6\u4fdd\u6301\u4e86\u4e0a\u5c42\u63a5\u53e3\u7684\u7edf\u4e00\u6027\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u27283.5 \u4e2a\u4eba\u601d\u8003<\/h3>\n\n\n\n<p>Poller\u3001EpollPoller\u3001PollPoller\u5b9e\u73b0\u4e86\u62bd\u8c61\u4e0e\u5b9e\u73b0\u7684\u5206\u79bb\uff0c<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u8fd9\u79cd\u8bbe\u8ba1\u4f7f\u5f97\u4e0a\u5c42\u4e1a\u52a1\u903b\u8f91\u53ea\u9700\u5173\u6ce8\u7edf\u4e00\u7684\u63a5\u53e3\uff0c\u800c\u4e0d\u7528\u5173\u5fc3\u5e95\u5c42\u662f\u4f7f\u7528epoll\u8fd8\u662fpoll\u5b9e\u73b0<\/mark><\/strong>\u3002\u4f8b\u5982\u4e0b\u9762\u7684\u8fc7\u7a0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Channel::enableReading() \n  \u2192 Channel::update() \n    \u2192 EventLoop::updateChannel() \n      \u2192 Poller::updateChannel() \n        \u2192 EPollPoller::updateChannel()\u6216PollPoller::updateChannel()<\/code><\/pre>\n\n\n\n<p>\u8fd9\u79cd\u8bbe\u8ba1\u5b8c\u7f8e\u4f53\u73b0\u4e86\u9762\u5411\u5bf9\u8c61\u7684\u8bbe\u8ba1\u539f\u5219\uff0c\u7279\u522b\u662f&#8221;\u4f9d\u8d56\u5012\u7f6e&#8221;\u539f\u5219\uff0c\u5373<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u9ad8\u5c42\u6a21\u5757\u4e0d\u4f9d\u8d56\u4f4e\u5c42\u6a21\u5757<\/mark><\/strong>\uff0c\u4e8c\u8005\u90fd\u4f9d\u8d56\u62bd\u8c61\uff0c\uff08EventLoop\u4f5c\u4e3a\u9ad8\u5c42\u6a21\u5757\uff0c\u53ea\u4f9d\u8d56\u4f4e\u5c42\u7684Poller\u62bd\u8c61\u63a5\u53e3\u53bb\u8c03\u7528\u5177\u4f53\u7684Poller-&gt;EPollPoller\/PollPoller\uff09\u3002<\/p>\n\n\n\n<p>\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u8fd9\u79cd\u5206\u5c42\u601d\u60f3\u53ef\u4ee5\u5e94\u7528\u4e8e\u4efb\u4f55\u9700\u8981\u652f\u6301\u591a\u5e73\u53f0\u7684\u6a21\u5757\u8bbe\u8ba1\uff0c\u53ef\u4ee5\u8f7b\u677e\u652f\u6301Linux\u7cfb\u7edf\u548c\u5176\u4ed6\u7cfb\u7edf\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/03\/4.gif'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"190\" data-original=\"http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/03\/4.gif\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-252\"\/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001EventLoop<\/h2>\n\n\n\n<p>\u6211\u4eec\u56de\u770b\u524d\u9762\u7684Poller\u6a21\u5757\u53ef\u4ee5\u53d1\u73b0\uff0cPoller\u662f\u5c01\u88c5\u4e86\u548c\u4e8b\u4ef6\u76d1\u542c\u6709\u5173\u7684\u65b9\u6cd5\u548c\u6210\u5458\uff0c\u8c03\u7528\u4e00\u6b21<code>Poller::poll<\/code>\u65b9\u6cd5\u5b83\u5c31\u80fd\u4f60\u8fd4\u56de\u4e8b\u4ef6\u76d1\u542c\u5668\u7684\u76d1\u542c\u7ed3\u679c\uff08\u53d1\u751f\u4e8b\u4ef6\u7684fd \u53ca\u5176 \u53d1\u751f\u7684\u4e8b\u4ef6\uff09\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>virtual Timestamp poll(int timeoutMs, ChannelList* activeChannels) = 0;<\/code><\/pre>\n\n\n\n<p>\u4f46\u662f\u4f5c\u4e3a\u4e00\u4e2a\u7f51\u7edc\u670d\u52a1\u5668\uff0c\u9700\u8981\u6709\u6301\u7eed\u76d1\u542c\u3001\u6301\u7eed\u83b7\u53d6\u76d1\u542c\u7ed3\u679c\u3001\u6301\u7eed\u5904\u7406\u76d1\u542c\u7ed3\u679c\u5bf9\u5e94\u7684\u4e8b\u4ef6\u7684\u80fd\u529b\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u9700\u8981<strong>\u5faa\u73af<\/strong>\u7684\u53bb \u3010\u8c03\u7528<code>Poller:poll<\/code>\u65b9\u6cd5\u83b7\u53d6\u5b9e\u9645\u53d1\u751f\u4e8b\u4ef6\u7684Channel\u96c6\u5408\uff0c\u7136\u540e\u8c03\u7528\u8fd9\u4e9bChannel\u91cc\u9762\u4fdd\u7ba1\u7684\u4e0d\u540c\u7c7b\u578b\u4e8b\u4ef6\u7684\u5904\u7406\u51fd\u6570\uff08\u8c03\u7528<code>Channel::HandlerEvent<\/code>\u65b9\u6cd5\uff09\u3002\u3011<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">EventLoop\u5c31\u662f\u8d1f\u8d23\u5b9e\u73b0\u201c\u5faa\u73af\u201d\uff0c\u8d1f\u8d23\u9a71\u52a8\u201c\u5faa\u73af\u201d\u7684\u91cd\u8981\u6a21\u5757\uff01\uff01<\/mark><\/strong>Channel\u548cPoller\u5176\u5b9e\u76f8\u5f53\u4e8eEventLoop\u7684\u624b\u4e0b\uff0cEventLoop\u6574\u5408\u5c01\u88c5\u4e86\u4e8c\u8005\u5e76\u5411\u4e0a\u63d0\u4f9b\u4e86\u66f4\u65b9\u4fbf\u7684\u63a5\u53e3\u6765\u4f7f\u7528\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u27284.1 EventLoop\u91cd\u8981\u6210\u5458\u53d8\u91cf<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">I\/O\u6838\u5fc3\u7ec4\u4ef6\uff1a<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>std::unique_ptr&lt;Poller&gt; poller_; \/\/ \u591a\u8def\u590d\u7528\u5668\uff08\u81ea\u52a8\u7ba1\u7406EPollPoller\/PollPoller\uff09\nChannelList activeChannels_; \/\/ \u5f53\u524d\u6d3b\u8dc3Channel\u5217\u8868\uff08\u6765\u81eaPoller::poll()\uff09\nChannel* currentActiveChannel_; \/\/ \u6b63\u5728\u5904\u7406\u7684\u4e8b\u4ef6Channel\uff08\u8c03\u8bd5\u7528\uff09<\/code><\/pre>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u7ebf\u7a0b\u7ed1\u5b9a\uff1a<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>const pid_t threadId_; \/\/ \u6240\u5c5e\u7ebf\u7a0bID\uff08\u901a\u8fc7CurrentThread::tid()\u521d\u59cb\u5316\uff09<\/code><\/pre>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u5b9a\u65f6\u5668\u7ba1\u7406\uff1a<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>std::unique_ptr&lt;TimerQueue&gt; timerQueue_; \/\/ \u5b9a\u65f6\u5668\u961f\u5217\uff08\u7ba1\u7406\u5b9a\u65f6\u4efb\u52a1\uff09<\/code><\/pre>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u8de8\u7ebf\u7a0b\u5524\u9192\u673a\u5236\uff1a<\/mark><\/strong><\/p>\n\n\n\n<p>int wakeupFd_; \/\/ eventfd\u6587\u4ef6\u63cf\u8ff0\u7b26<\/p>\n\n\n\n<p>std::unique_ptr&lt;Channel&gt; wakeupChannel_; \/\/ \u5524\u9192\u4e8b\u4ef6\u4e13\u7528Channel<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u4efb\u52a1\u961f\u5217\uff1a<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mutable MutexLock mutex_; \/\/ \u4e92\u65a5\u9501\uff08\u4fdd\u62a4pendingFunctors_\uff09\nstd::vector&lt;Functor&gt; pendingFunctors_; \/\/ \u5f85\u6267\u884c\u56de\u8c03\u961f\u5217\uff08\u8de8\u7ebf\u7a0b\u5b89\u5168\uff09<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e9b\u6210\u5458\u7ec4\u6210\u4e86Reactor\u6a21\u5f0f\u7684\u6838\u5fc3\u5b9e\u73b0\uff0c\u5176\u4e2d<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>poller_ \u4e0e activeChannels_ \u8d1f\u8d23IO\u4e8b\u4ef6\u68c0\u6d4b<\/li>\n\n\n\n<li>wakeupFd_ + wakeupChannel_ \u5b9e\u73b0\u8de8\u7ebf\u7a0b\u5524\u9192<\/li>\n\n\n\n<li>mutex_ + pendingFunctors_ \u4fdd\u969c\u7ebf\u7a0b\u5b89\u5168\u7684\u4efb\u52a1\u961f\u5217<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u27284.2 EventLoop\u91cd\u8981\u6210\u5458\u51fd\u6570<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">void EventLoop::loop() \u4e8b\u4ef6\u5faa\u73af\u6838\u5fc3<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void EventLoop::loop()\n{\n    while (!quit_) {\n        activeChannels_.clear();\n        pollReturnTime_ = poller_-&gt;poll(kPollTimeMs, &amp;activeChannels_);\n        \n        \/\/ \u5904\u7406IO\u4e8b\u4ef6\n        for (Channel* channel : activeChannels_) {\n            currentActiveChannel_ = channel;\n            channel-&gt;handleEvent(pollReturnTime_);\n        }\n        \n        \/\/ \u6267\u884cpending\u4efb\u52a1\n        doPendingFunctors();\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u51fd\u6570\u662fEventLoop\u91cc\u9762\u6700\u91cd\u8981\u7684\u4e00\u4e2a\u51fd\u6570\uff0c\u662fReactor\u6a21\u5f0f\u7684\u6838\u5fc3\u5b9e\u73b0\u3002\u6bcf\u4e2aEventLoop\u5bf9\u8c61\u90fd\u552f\u4e00\u7ed1\u5b9a\u4e86\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u8fd9\u4e2a\u7ebf\u7a0b\u5176\u5b9e\u5c31\u5728\u4e00\u76f4\u6267\u884c\u8fd9\u4e2a\u51fd\u6570\u91cc\u9762\u7684while\u5faa\u73af\uff0c<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u8fd9\u4e2awhile\u5faa\u73af\u7684\u5927\u81f4\u903b\u8f91\u6bd4\u8f83\u7b80\u5355\u3002\u5c31\u662f\u8c03\u7528<code>Poller::poll<\/code>\u65b9\u6cd5\u83b7\u53d6\u4e8b\u4ef6\u76d1\u542c\u5668\u4e0a\u7684\u76d1\u542c\u7ed3\u679c\u3002\u63a5\u4e0b\u6765\u5728loop\u91cc\u9762\u5c31\u4f1a\u8c03\u7528\u76d1\u542c\u7ed3\u679c\u4e2d\u6bcf\u4e00\u4e2aChannel\u7684\u5904\u7406\u51fd\u6570<code>HandlerEvent( )<\/code>\u3002<\/mark><\/strong>\u6bcf\u4e00\u4e2aChannel\u7684\u5904\u7406\u51fd\u6570\u4f1a\u6839\u636eChannel\u7c7b\u4e2d\u5c01\u88c5\u7684\u5b9e\u9645\u53d1\u751f\u7684\u4e8b\u4ef6\uff0c\u6267\u884cChannel\u7c7b\u4e2d\u5c01\u88c5\u7684\u5404\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u3002\uff08\u6bd4\u5982\u4e00\u4e2aChannel\u53d1\u751f\u4e86\u53ef\u8bfb\u4e8b\u4ef6\uff0c\u53ef\u5199\u4e8b\u4ef6\uff0c\u5219\u8fd9\u4e2aChannel\u7684<code>HandlerEvent( )<\/code>\u5c31\u4f1a\u8c03\u7528\u63d0\u524d\u6ce8\u518c\u5728\u8fd9\u4e2aChannel\u7684\u53ef\u8bfb\u4e8b\u4ef6\u548c\u53ef\u5199\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\uff0c\u53c8\u6bd4\u5982\u53e6\u4e00\u4e2aChannel\u53ea\u53d1\u751f\u4e86\u53ef\u8bfb\u4e8b\u4ef6\uff0c\u90a3\u4e48<code>HandlerEvent( )<\/code>\u5c31\u53ea\u4f1a\u8c03\u7528\u63d0\u524d\u6ce8\u518c\u5728\u8fd9\u4e2aChannel\u4e2d\u7684\u53ef\u8bfb\u4e8b\u4ef6\u5904\u7406\u51fd\u6570)<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>EventLoop \u7ebf\u7a0b\u542f\u52a8\n     \u2193\nwhile(true) {\n     \u2193\nPoller::poll() \u83b7\u53d6\u4e8b\u4ef6\u5217\u8868\n     \u2193\n\u904d\u5386\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a Channel\n     \u2193\nChannel::HandlerEvent()\n     \u2193\n\u6839\u636e\u5b9e\u9645\u4e8b\u4ef6 \u2192 \u8c03\u7528\u5bf9\u5e94\u56de\u8c03\n     \u2193\n} \u56de\u5230\u5faa\u73af\u5f00\u59cb<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2728<strong>4.3 <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">EventLoop\u5904\u7406\u5f02\u6b65\u4efb\u52a1\u7684\u6838\u5fc3\u65b9\u6cd5<\/mark><\/strong><\/h3>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">runAfter()<\/mark><\/strong> \u548c<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\"> runInLoop()<\/mark><\/strong> \u662f EventLoop \u4e2d\u5904\u7406\u5f02\u6b65\u4efb\u52a1\u7684\u6838\u5fc3\u65b9\u6cd5<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void EventLoop::runInLoop(Functor cb)\n{\n    if (isInLoopThread()) { \/\/ \u5f53\u524d\u7ebf\u7a0b\u662f\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b\n        cb(); \/\/ \u7acb\u5373\u6267\u884c\u56de\u8c03\n    } else {\n        queueInLoop(std::move(cb)); \/\/ \u8de8\u7ebf\u7a0b\u65f6\u9700\u8981\u52a0\u5165\u961f\u5217\n    }\n}<\/code><\/pre>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">EventLoop::runInLoop\u51fd\u6570<\/mark><\/strong>\u53bb\u6267\u884c\u4efb\u52a1\u7684\u65f6\u5019\u4f1a\u5148\u53bb\u5224\u65ad\u5f53\u524d\u7ebf\u7a0b\u662f\u5426\u662f\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b\uff0c\u662f\u5219\u7acb\u5373\u6267\u884c\u56de\u8c03\uff0c\u5982\u679c\u662f\u8de8\u7ebf\u7a0b\u5219\u9700\u8981\u5c06\u56de\u8c03\u51fd\u6570\u52a0\u5165\u7ebf\u7a0b\u5b89\u5168\u7684\u4efb\u52a1\u961f\u5217\uff0c\u4f20\u5165queueInLoop\u51fd\u6570\u540e\u9762\u52a0\u5165\u4e00\u4e2a\u961f\u5217\u53bb\u5f02\u6b65\u6267\u884c\uff0c\u6267\u884c\u7684\u65f6\u5019\u8fd8\u4f1a\u8bbe\u8ba1\u4e00\u4e2a\u5524\u9192\u673a\u5236wake\uff0c\u540e\u9762\u4f1a\u63d0\u53ca\u3002\u8fd9\u6837\u7684\u8bbe\u8ba1<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u786e\u4fdd\u7279\u5b9a\u64cd\u4f5c\u5728 IO \u7ebf\u7a0b\u6267\u884c<\/mark><\/strong>\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void EventLoop::queueInLoop(Functor cb)\n{\n  {\n  MutexLockGuard lock(mutex_);\n  pendingFunctors_.push_back(std::move(cb)); \/\/<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u5c06\u56de\u8c03\u51fd\u6570\u5b58\u5165EventLoop\u7684\u5f85\u6267\u884c\u4efb\u52a1\u961f\u5217<\/mark><\/strong>\n  }\n\n  if (!isInLoopThread() || callingPendingFunctors_) \/\/<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u4e0d\u5728I\/O\u7ebf\u7a0b\u91cc \u9700\u8981\u53bbwake<\/mark><\/strong>\n  {\n    wakeup();\n  }\n}<\/code><\/pre>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">EventLoop::queueInLoop<\/mark><\/strong>\u51fd\u6570\u5728muduo\u7f51\u7edc\u5e93\u4e2d\u627f\u62c5\u8de8\u7ebf\u7a0b\u4efb\u52a1\u8c03\u5ea6\u7684\u6838\u5fc3\u804c\u8d23\uff0c\u5f53\u8c03\u7528 loop_-&gt;queueInLoop() \u65f6\uff0c\u4f1a<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u5c06\u56de\u8c03\u51fd\u6570\u5b58\u5165EventLoop\u7684\u5f85\u6267\u884c\u4efb\u52a1\u961f\u5217\uff08pendingFunctors_\uff09<\/mark><\/strong>\uff0c\u5982\u679c\u5f53\u524d\u7ebf\u7a0b\u4e0d\u662fEventLoop\u6240\u5c5e\u7ebf\u7a0b\uff0c\u6216EventLoop\u6b63\u5728\u5904\u7406\u56de\u8c03\uff0c\u4f1a\u8fdb\u884c\u8c03\u7528<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">wakeup<\/mark><\/strong>\u51fd\u6570\uff0c\u5185\u90e8\u4f1a\u901a\u8fc7eventfd\u5524\u9192\u5904\u4e8epoll\u72b6\u6001\u7684EventLoop\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>TimerId EventLoop::runAfter(double delay, TimerCallback cb)\n{\n    Timestamp time(addTime(Timestamp::now(), delay));\n    return runAt(time, std::move(cb));\n}\n\/\/ runAt\u51fd\u6570\nTimerId EventLoop::runAt(Timestamp time, TimerCallback cb)\n{\n  return timerQueue_-&gt;addTimer(std::move(cb), time, 0.0);\n}\n\nrunAfter() -&gt; runAt() -&gt; TimerQueue::addTimer()<\/code><\/pre>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">EventLoop::runAfter\u51fd\u6570<\/mark><\/strong>\u901a\u8fc7 addTime \u51fd\u6570\u5c06\u5f53\u524d\u65f6\u95f4 Timestamp::now() \u4e0e\u5ef6\u8fdf\u65f6\u95f4delay\u76f8\u52a0\uff0c\u5f97\u5230\u672a\u6765\u65f6\u95f4\u70b9\uff0c\u7136\u540e\u6258\u7ed9 runAt \u51fd\u6570\u5904\u7406\u7edd\u5bf9\u65f6\u95f4\u7684\u5b9a\u65f6\u4efb\u52a1\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5b9a\u65f6\u5668\u5230\u671f -&gt; timerfd \u4ea7\u751f\u8bfb\u4e8b\u4ef6 \n-&gt; Poller \u8fd4\u56de\u6d3b\u8dc3\u901a\u9053 \n-&gt; Channel::handleEvent \u8c03\u7528 TimerQueue::handleRead \n-&gt; \u6267\u884c\u7528\u6237\u6ce8\u518c\u7684\u5b9a\u65f6\u5668\u56de\u8c03<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2728<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">4.4 \u8de8\u7ebf\u7a0b\u5524\u9192\u673a\u5236<\/mark><\/strong><\/h3>\n\n\n\n<p>\u5728muduo\u7f51\u7edc\u5e93\u4e2d\uff0c\u5524\u9192\u673a\u5236\u7684\u6838\u5fc3\u662f\u901a\u8fc7<strong><em>eventfd<\/em><\/strong>\u5b9e\u73b0\u7684\u7ebf\u7a0b\u95f4\u4e8b\u4ef6\u901a\u77e5\u673a\u5236\u3002\u4e3b\u8981\u4f5c\u7528\u662f\u5728\u8de8\u7ebf\u7a0b\u64cd\u4f5c\u65f6<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u5524\u9192\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b<\/mark><\/strong>\uff0c<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u786e\u4fdd\u4e8b\u4ef6\u5faa\u73af\u53ca\u65f6\u5904\u7406\u65b0\u7684\u4efb\u52a1\u6216I\/O\u4e8b\u4ef6<\/mark><\/strong>\u3002<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u8ba9 EventLoop \u4ece <code>poll\/epoll_wait<\/code> \u7684\u7b49\u5f85\u4e2d\u7acb\u5373\u8fd4\u56de\uff0c\u5904\u7406\u201c\u5176\u4ed6\u7ebf\u7a0b\u201d\u6295\u9012\u7684\u4efb\u52a1\u3002<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void EventLoop::wakeup()\n{\n  uint64_t one = 1;\n  ssize_t n = sockets::write(wakeupFd_, &amp;one, sizeof one);\n  if (n != sizeof one)\n  {\n    LOG_ERROR &lt;&lt; \"EventLoop::wakeup() writes \" &lt;&lt; n &lt;&lt; \" bytes instead of 8\";\n  }\n}\n\n\u8fd9\u91cc\u7684wakeupFd_\u5728EventLoop\u7684\u6784\u9020\u51fd\u6570\u4f1a\u53bb\u8fdb\u884c\u521d\u59cb\u5316 \nint evtfd = ::eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC); \u540e\u5c06evtfd\u521d\u59cb\u5316\u7ed9wakeupFd_\n\u4e5f\u5c31\u662f\u8bf4wakeupFd_\u662f\u4e00\u4e2aeventfd\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\n\n\u63a5\u7740\u4f1a\u53bb\u5c06wakeupFd_\u5c01\u88c5\u6210Channel\uff0c\u76d1\u542c\u53ef\u8bfb\u4e8b\u4ef6\nwakeupChannel_-&gt;setReadCallback(std::bind(&amp;EventLoop::handleRead, this));\nwakeupChannel_-&gt;enableReading(); \/\/ \u6ce8\u518c\u5230poller\u76d1\u542c\u53ef\u8bfb\u4e8b\u4ef6\n\n<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u5f53wakeup\u51fd\u6570\u8fdb\u884c\u5bf9wakeupFd_\u63cf\u8ff0\u7b26\u8fdb\u884cwrite\u5199\u5165\u5b57\u8282\u7684\u65f6\u5019\uff0c\u5c31\u4f1a\u53bb\u89e6\u53d1wakeupChannel_\u7684\u8bfb\u56de\u8c03\uff01\uff01\uff01<\/mark><\/strong>\u8bfb\u56de\u8c03\u4f1a\u53bb\u8c03\u7528\u4ec0\u4e48\u5462\uff1f\u4f1a<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-amber-color\">\u8c03\u7528EventLoop::handleRead\u51fd\u6570 \u6b64\u65f6\u5c31\u4f1a\u53bb\u89e3\u9664 poll\/epoll_wait \u7684\u963b\u585e\u72b6\u6001<\/mark><\/strong>!!\nvoid EventLoop::handleRead() {\n    uint64_t one;\n    ssize_t n = sockets::read(wakeupFd_, &amp;one, sizeof one); \/\/ \u5fc5\u987b\u8bfb\u53d6\u6570\u636e\uff0c\u5426\u5219\u4f1a\u91cd\u590d\u89e6\u53d1\n    \/\/ \u7ee7\u7eed\u5904\u7406pendingFunctors_\u4e2d\u7684\u4efb\u52a1...\n}<\/code><\/pre>\n\n\n\n<p>\u5177\u4f53\u6d41\u7a0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5176\u4ed6\u7ebf\u7a0b\u8c03\u7528 wakeup()\n    \u2193\n\u5411 wakeupFd_ \u5199\u5165\u6570\u636e\uff08\u89e6\u53d1\u53ef\u8bfb\u4e8b\u4ef6\uff09\n    \u2193\npoll\/epoll_wait \u7acb\u5373\u8fd4\u56de\uff08\u89e3\u9664\u963b\u585e\uff09\n    \u2193\nEventLoop \u5904\u7406\u6d3b\u8dc3\u901a\u9053 \u2192 wakeupChannel_ \u89e6\u53d1 handleRead()\n    \u2193\n\u8bfb\u53d6 wakeupFd_ \u6570\u636e\uff08\u6e05\u7a7a\u4e8b\u4ef6\uff0c\u907f\u514d\u91cd\u590d\u89e6\u53d1\uff09\n    \u2193\n\u6267\u884c doPendingFunctors() \u5904\u7406\u4efb\u52a1\u961f\u5217 (\u8fd9\u4e9b\u4efb\u52a1\u5728queueInLoop\u51fd\u6570\u91cc\u4f1a\u53bb\u52a0\u5165)<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u5904\u7406\u5f02\u6b65\u4efb\u52a1\u7684\u6838\u5fc3\u673a\u5236EventLoop::doPendingFunctors<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void EventLoop::doPendingFunctors()\n{ \/\/ typedef std::function&lt;void()&gt; Functor;\n  std::vector&lt;Functor&gt; functors;\n  callingPendingFunctors_ = true;\n\n  {\n  MutexLockGuard lock(mutex_);\n  functors.swap(pendingFunctors_); \/\/ \u539f\u5b50\u4ea4\u6362\u51cf\u5c11\u9501\u6301\u6709\u65f6\u95f4\n  }\n\n  for (const Functor&amp; functor : functors) \/\/ \u904d\u5386functors\u6267\u884c\u56de\u8c03\u51fd\u6570\n  {\n    functor();\n  }\n  callingPendingFunctors_ = false;\n}<\/code><\/pre>\n\n\n\n<p><em>doPendingFunctors<\/em>\u51fd\u6570\u4f1a\u53bb\u901a\u8fc7\u4e92\u65a5\u9501\u4fdd\u8bc1\u7ebf\u7a0b\u5b89\u5168\uff0c\u4ee5\u53ca\u4f7f\u7528\u539f\u5b50\u4ea4\u6362\u51cf\u5c11\u9501\u6301\u6709\u65f6\u95f4\uff0c\u5c06\u961f\u5217\u5185\u5bb9\u8f6c\u79fb\u5230\u5c40\u90e8\u53d8\u91cf\uff0c\u51cf\u5c11\u9501\u7ade\u4e89\uff0c\u7136\u540e\u53bb\u904d\u5386functors\u6267\u884c\u56de\u8c03\u51fd\u6570\uff0c\u8fd9\u4e9b\u56de\u8c03\u51fd\u6570\u5728queueInLoop\u7684\u65f6\u5019\u52a0\u5165\u7684\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">EventLoop::updateChannel\u51fd\u6570<\/mark><\/strong><\/p>\n\n\n\n<p>\u4ed6\u5c06\u4f20\u6765\u7684Channel\u8fdb\u884c\u518d\u4e00\u5c42\u4f20\u9012\u7ed9Poller\uff0c\u7136\u540e\u8fdb\u884c\u591a\u6001\u8c03\u7528\u5177\u4f53\u7684Poller\u4f8b\u5982EpollPoller\u7684UpdateChannel\u51fd\u6570\uff0c\u8fdb\u884cepoll_ctl()\u8fdb\u884c\u6700\u7ec8\u7684\u4e8b\u4ef6\u6ce8\u518c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void EventLoop::updateChannel(Channel* channel)\n{\n  assert(channel-&gt;ownerLoop() == this);\n  assertInLoopThread();\n  poller_-&gt;updateChannel(channel);\n}<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/05\/image-1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"579\" height=\"648\" data-original=\"http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/05\/image-1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-814\" style=\"width:510px;height:auto\"  sizes=\"auto, (max-width: 579px) 100vw, 579px\" \/><\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u7ebf\u7a0b\u7ed1\u5b9a\u3001IO\u7ebf\u7a0b\u5b89\u5168\u673a\u5236<\/mark><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void EventLoop::assertInLoopThread()\n{\n    if (!isInLoopThread()) {\n        abortNotInLoopThread(); \/\/ \u786e\u4fdd\u7ebf\u7a0b\u5b89\u5168\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u5728muduo\u4e2d\uff0c\u6bcf\u4e2aEventLoop\u901a\u8fc7 threadId_ \u6210\u5458\u4e0e\u521b\u5efa\u7ebf\u7a0b\u7ed1\u5b9a\uff0c\u5b9e\u73b0&#8221;one loop per thread&#8221;\u7684\u8bbe\u8ba1\u6a21\u5f0f\u3002\u50cfEventLoop\u7684\u6210\u5458\u51fd\u6570<em>updateChannel<\/em>\u548c<em>removeChannel<\/em>\uff0c\u5b83\u4eec\u5728\u6267\u884c\u7684\u65f6\u5019\u90fd\u4f1a\u53bb\u8fdb\u884c\u68c0\u67e5\u662f\u5426\u662f\u5728\u5f53\u524dIO\u7ebf\u7a0b\u91cc\u9762\u6267\u884c\u7684\uff0c\u5982\u679c\u4e0d\u662f\u5219\u4f1a\u8c03\u7528abortNotInLoopThread\u51fd\u6570\u62a5\u9519\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u27284.5 \u68b3\u7406EventLoop\u3001Channel\u3001Poller<strong>\u5728\u6574\u4e2aMulti-Reactor\u901a\u4fe1\u67b6\u6784\u4e2d\u7684\u89d2\u8272<\/strong><\/h3>\n\n\n\n<p>\u7ec4\u4ef6\u89d2\u8272\u68b3\u7406\uff1a<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">EventLoop \uff08\u4e8b\u4ef6\u5faa\u73af\u4e2d\u67a2\uff09<\/mark><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6bcf\u4e2aIO\u7ebf\u7a0b\u8fd0\u884c\u4e00\u4e2aEventLoop(\u4e00\u4e2aEventLoop\u5bf9\u5e94\u4e00\u4e2aReactor\u7ebf\u7a0b)<\/li>\n\n\n\n<li>\u8d1f\u8d23\u9a71\u52a8Poller\u8fdb\u884c\u4e8b\u4ef6\u76d1\u542c<\/li>\n\n\n\n<li>\u7ba1\u7406Channel\u751f\u547d\u5468\u671f\u548c\u56de\u8c03\u8c03\u5ea6<\/li>\n\n\n\n<li>\u7ebf\u7a0b\u7ed1\u5b9a\uff1a\u901a\u8fc7 assertInLoopThread() \u786e\u4fdd\u7ebf\u7a0b\u5b89\u5168<\/li>\n<\/ul>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">Channel \uff08\u4e8b\u4ef6\u5904\u7406\u5668\uff09<\/mark><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c01\u88c5\u6587\u4ef6\u63cf\u8ff0\u7b26\u548c\u4e8b\u4ef6\u56de\u8c03<\/li>\n\n\n\n<li>\u4e8b\u4ef6\u72b6\u6001\u7ba1\u7406\uff08EPOLLIN\/EPOLLOUT\u7b49\uff09<\/li>\n\n\n\n<li>\u901a\u8fc7 update() \u65b9\u6cd5\u89e6\u53d1Poller\u66f4\u65b0<\/li>\n<\/ul>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">Poller \uff08IO\u590d\u7528\u62bd\u8c61\u5c42\uff09<\/mark><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9e\u73b0\u5177\u4f53IO\u590d\u7528\u673a\u5236\uff08EPollPoller\uff09<\/li>\n\n\n\n<li>\u7ef4\u62a4fd\u5230Channel\u7684\u6620\u5c04\u8868\uff08 channels_ \uff09<\/li>\n\n\n\n<li>\u901a\u8fc7 epoll_ctl \u7cfb\u7edf\u8c03\u7528\u7ba1\u7406\u4e8b\u4ef6\u6ce8\u518c<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u6a21\u62df\u4e00\u6b21\u5b8c\u6574\u7684\u901a\u4fe1\u6d41\u7a0b\uff0c\u68b3\u7406\u4e0b\u5404\u4e2a\u6a21\u5757\u534f\u540c\u5de5\u4f5c\u7684\u6d41\u7a0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u521d\u59cb\u5316\u9636\u6bb5\nEventLoop mainLoop;      \/\/ \u4e3bReactor\n\/\/ Acceptor\u662f\u8fd0\u884c\u5728\u4e3bReactor\u4e0a\u9762\u7684\u8fde\u63a5\u5668 \u8fde\u63a5\u5230\u8fbe\u540edispatch\u7ed9\u5b50Reactor\nAcceptor acceptor(&amp;mainLoop, listenAddr);  \/\/ \u521b\u5efa\u76d1\u542c\u5957\u63a5\u5b57\n\n\/\/ 1. \u6ce8\u518c\u76d1\u542c\u4e8b\u4ef6\nacceptor.listen()  \/\/ <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u7ed1\u5b9a\u5728Acceptor\u76d1\u542c\u7684\u5957\u63a5\u5b57\u7684Channel\u4ed6\u4f1a\u53bb\u8bbe\u7f6e\u8bfb\u4e8b\u4ef6\u56de\u8c03<\/mark><\/strong>\n\u2192 Channel::enableReading()  <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\/\/ \u4eceChannel\u5c42\u5f00\u59cb\u5230EventLoop\u518d\u5230\u6700\u540e\u7684EPollPoller\u5c42<\/mark><\/strong>\n\u2192 Channel::update() \n\u2192 EventLoop::updateChannel() \n\u2192 EPollPoller::updateChannel(EPOLL_CTL_ADD)\n\n\/\/ 2. \u65b0\u8fde\u63a5\u5230\u8fbe\nepoll_wait\u8fd4\u56de\u76d1\u542csocket\u7684EPOLLIN\u4e8b\u4ef6 \n\u2192 EventLoop\u5904\u7406\u6d3b\u8dc3Channel \n\u2192 Acceptor::handleRead() \u521b\u5efaTcpConnection \/\/ <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u5f53\u6709\u65b0\u8fde\u63a5\u5230\u4e86\u5c31\u4f1a\u53bb\u89e6\u53d1\u8bfb\u56de\u8c03\u8bbe\u7f6e\u597d\u7684handleRead\u51fd\u6570<\/mark><\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u4f1a\u53bb\u521b\u5efa\u4e00\u4e2aTcpConnection\u5bf9\u8c61 \u8868\u793a\u4e00\u4e2a\u8fde\u63a5<\/mark><\/strong>\n\n\/\/ 3. TcpConnection\u5efa\u7acb\nTcpConnection conn(subLoop, sockfd); \/\/ \u5b50Reactor\nconn.connectEstablished() \n\u2192 Channel::enableReading() \/\/ <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">TcpConnection\u5bf9\u8c61\u4f1a\u53bb\u8fdb\u884c\u7ed1\u5b9a\u5230\u4e00\u4e2a\u5b50Reactor\u4e2d\u53bb\uff0c\u7136\u540e\u8bbe\u7f6eChannel\u5bf9\u8c61\u7684\u8bfb\u56de\u8c03\uff0c\u4e5f\u5c31\u662f\u5f53\u6570\u636e\u5230\u6765\u7684\u65f6\u5019\u5c31\u4f1a\u53bb\u89e6\u53d1\u8bfb\u56de\u8c03\u51fd\u6570<\/mark><\/strong>\n\u2192 subLoop\u7684Poller\u6267\u884cEPOLL_CTL_ADD\n\n\/\/ 4. \u6570\u636e\u5230\u8fbe\u5904\u7406\nepoll_wait\u8fd4\u56de\u5ba2\u6237\u7aefsocket\u7684EPOLLIN\u4e8b\u4ef6\n\u2192 subLoop\u7684EventLoop\u8c03\u7528Channel::handleEvent()\n\u2192 TcpConnection::handleRead() \u8bfb\u53d6\u6570\u636e\n\u2192 \u89e6\u53d1\u7528\u6237\u8bbe\u7f6e\u7684\u6d88\u606f\u56de\u8c03\n\n\/\/ 5. \u6570\u636e\u53d1\u9001\u6d41\u7a0b\nconn.send(data) \u2192 \u82e5\u8f93\u51fa\u7f13\u51b2\u533a\u6ee1\n\u2192 Channel::enableWriting() \n\u2192 EPollPoller::updateChannel(EPOLL_CTL_MOD)\n\u2192 \u5f53\u53ef\u5199\u65f6\u89e6\u53d1EPOLLOUT\u4e8b\u4ef6\n\u2192 TcpConnection::handleWrite() \u53d1\u9001\u6570\u636e<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u8fd9\u4e2a\u4e8b\u4ef6\u6ce8\u518c\u94fe\u662f\u4e00\u5c42\u63a5\u4e00\u5c42\u7684\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Channel\u72b6\u6001\u53d8\u5316 \u2192 EventLoop::updateChannel() \u2192 Poller::updateChannel() \u2192 epoll_ctl\u7cfb\u7edf\u8c03\u7528<\/code><\/pre>\n\n\n\n<p>\u591aReactor\u534f\u4f5c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Main Reactor\uff08accept\u7ebf\u7a0b\uff09\n\u2502\n\u251c\u2500\u2500 \u901a\u8fc7epoll\u76d1\u542clisten_fd\n\u2502\n\u2514\u2500\u2500 \u65b0\u8fde\u63a5\u5230\u8fbe\u540edispatch\u7ed9Sub Reactor\uff08IO\u7ebf\u7a0b\uff09\n\nSub Reactor\uff08\u5904\u7406IO\uff09\n\u2502\n\u251c\u2500\u2500 \u7ba1\u7406\u591a\u4e2aTcpConnection\u7684Channel\n\u2502\n\u2514\u2500\u2500 \u72ec\u7acb\u8fd0\u884cepoll_wait\u4e8b\u4ef6\u5faa\u73af<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/05\/mermaid-2025720-131337-1024x96.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"96\" data-original=\"http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/05\/mermaid-2025720-131337-1024x96.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-855\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u8de8\u7ebf\u7a0b\u8c03\u5ea6\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u975eIO\u7ebf\u7a0b\u64cd\u4f5c\u793a\u4f8b\notherThread.postTask(&#91;]{\n    mainLoop.queueInLoop(&#91;]{\n        acceptor.listen(); \/\/ \u786e\u4fdd\u5728IO\u7ebf\u7a0b\u6267\u884c\n    });\n});<\/code><\/pre>\n\n\n\n<p>\u603b\u7ed3\uff1a<\/p>\n\n\n\n<p>Channel \u662f<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u201c\u4e8b\u4ef6-\u56de\u8c03\u201d<\/mark><\/strong>\u7684\u8f7d\u4f53\uff0cEventLoop \u662f<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u201c\u7ebf\u7a0b-\u9a71\u52a8\u201d<\/mark><\/strong>\u7684\u5fc3\u810f\uff0cPoller \u662f<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u201cfd-\u76d1\u63a7\u201d<\/mark><\/strong>\u7684\u5f15\u64ce\uff1b\u4e09\u8005\u901a\u8fc7 update \u94fe\u5f0f\u8c03\u7528\u628a\u72b6\u6001\u53d8\u5316\u4ece Channel \u7ecf EventLoop \u540c\u6b65\u5230 Poller\uff0c\u6700\u7ec8\u7531 epoll \u5b8c\u6210\u4e8b\u4ef6\u6ce8\u518c\u4e0e\u5206\u53d1\uff0c\u6784\u6210 Muduo \u7684 Reactor \u6838\u5fc3\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2728<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">4.6 \u4e2a\u4eba\u601d\u8003<\/mark><\/strong><\/h3>\n\n\n\n<p>EventLoop\u6a21\u5757\u4f5c\u4e3a\u4e8b\u4ef6\u5faa\u73af\u4e2d\u67a2\uff0c\u5728Multi-Reactor\u4e2d\u662f\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u89d2\u8272\uff0c\u4e00\u4e2aEventLoop\u5bf9\u5e94\u4e00\u4e2aReactor\u7ebf\u7a0b\uff0c\u901a\u8fc7EventLoop\u5b9e\u73b0\u7ebf\u7a0b-\u9a71\u52a8\u6a21\u5f0f\u3002<\/p>\n\n\n\n<p>EventLoop\u8fd9\u4e2a\u6a21\u5757\u4e2d\u6709\u4e24\u4e2a\u662f\u633a\u503c\u5f97\u5b66\u4e60\u7684\u3002\u4e00\u4e2a\u662f<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u5904\u7406\u5f02\u6b65\u4efb\u52a1\u7684\u6838\u5fc3\u65b9\u6cd5queueInLoop<\/mark><\/strong>\uff0c\u4e00\u4e2a\u662f<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u8de8\u7ebf\u7a0b\u5524\u9192\u7684\u673a\u5236wakeup<\/mark><\/strong>\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Thread A \u2192 queueInLoop() \u2192 wakeup() \u2192 eventfd\u5199\u5165 \u2192 \u4e2d\u65adepoll_wait\n\u2193\nThread B\u7684EventLoop \u2192 \u5904\u7406wakeup\u4e8b\u4ef6 \u2192 \u6267\u884cpendingFunctors_<\/code><\/pre>\n\n\n\n<p>\u673a\u5236\u62c6\u89e3\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>queueInLoop()\uff1a\u628a lambda\/std::function \u585e\u8fdb pendingFunctors_\uff0c\u4fdd\u8bc1\u6240\u6709\u5bf9 EventLoop \u72b6\u6001\u7684\u4fee\u6539\u90fd\u53d1\u751f\u5728\u5176\u6240\u5c5e\u7ebf\u7a0b\u3002\nwakeup()\uff1a\u5411 eventfd \u5199\u5165 8 \u5b57\u8282\uff0c\u7acb\u5373\u6253\u65ad\u963b\u585e\u5728 epoll_wait \u4e0a\u7684 EventLoop \u7ebf\u7a0b\uff0c\u8ba9\u5b83\u5728\u4e0b\u4e00\u8f6e\u5faa\u73af\u91cc\u628a\u4efb\u52a1\u53d6\u51fa\u6765\u6267\u884c\u3002<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e24\u6b65<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">\u628a\u201c\u7ebf\u7a0b\u9a71\u52a8\u201d\u53d8\u6210\u4e86\u201c\u6d88\u606f\u9a71\u52a8\u201d<\/mark><\/strong>\uff0c\u7ebf\u7a0b\u5916\uff1a\u53ea\u7ba1\u6295\u9012\uff0c\u4e0d\u78b0\u5185\u90e8\u72b6\u6001\uff0c\u7ebf\u7a0b\u5185\uff1a\u62ff\u5230\u6d88\u606f\u540e\u518d\u7edf\u4e00\u4fee\u6539\u72b6\u6001\uff0c\u5929\u7136\u65e0\u9501\u3002<\/p>\n\n\n\n<p>\u53ef\u4ee5\u770b\u770b\u7f3a\u5931\u8fd9\u4e24\u79cd\u673a\u5236\u7684\u5178\u578b\u5f0a\u7aef\uff1a<\/p>\n\n\n\n<p>\u573a\u666f 1\uff1a\u6ca1\u6709 queueInLoop()\uff0c\u76f4\u63a5\u5728\u522b\u7684\u7ebf\u7a0b\u8c03\u7528 Channel::update()<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5047\u8bbe Thread A \u76f4\u63a5\u6267\u884c conn-&gt;channel()-&gt;enableWriting()\uff0c\u800c Thread B \u7684 EventLoop \u6b64\u65f6\u6b63\u5728\u904d\u5386 channels_ \u5e76\u51c6\u5907 epoll_ctl(EPOLL_CTL_DEL)\u3002\n\n\u7ed3\u679c\uff1a\u4e24\u4e2a\u7ebf\u7a0b\u5e76\u53d1\u64cd\u4f5c\u540c\u4e00 fd \u7684 epoll \u6ce8\u518c\uff0c\u6781\u6613\u89e6\u53d1 \u201cBad file descriptor\u201d \u6216 \u201cOperation now in progress\u201d\uff0c\u751a\u81f3\u5bfc\u81f4 epoll \u5185\u90e8\u7ea2\u9ed1\u6811\u88ab\u7834\u574f\uff0c\u8fdb\u7a0b core dump\u3002<\/code><\/pre>\n\n\n\n<p>\u573a\u666f 2\uff1a\u6709 queue \u4f46\u5fd8\u4e86 wakeup()<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Thread A \u5411 pendingFunctors_ \u63a8\u4e86\u4e00\u4e2a\u201c\u7acb\u523b\u5173\u95ed\u8fde\u63a5\u201d\u7684\u4efb\u52a1\uff0c\u4f46\u7531\u4e8e\u6ca1\u6709\u5524\u9192\uff0cThread B \u7684 EventLoop \u4ecd\u963b\u585e\u5728 epoll_wait\u3002\n\n\u4efb\u52a1\u5ef6\u8fdf\u5230\u4e0b\u4e00\u6b21\u201c\u81ea\u7136\u201d\u4e8b\u4ef6\u5230\u6765\u65f6\u624d\u6267\u884c\uff0c\u5ba2\u6237\u7aef\u5df2\u8d85\u65f6\u91cd\u4f20\u591a\u6b21\uff0c\u7528\u6237\u4f53\u9a8c\u6781\u5dee\uff1b\u6781\u7aef\u60c5\u51b5\u4e0b\uff0c\u5927\u91cf CLOSE_WAIT \u5806\u79ef\uff0c\u8017\u5c3d\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002<\/code><\/pre>\n\n\n\n<p>queueInLoop() \u548c wakeup() \u50cf\u4e00\u5bf9\u201c\u90ae\u5dee + \u95e8\u94c3\u201d \uff0c\u90ae\u5dee\uff08queueInLoop\uff09\u628a\u4fe1\u4ef6\u653e\u5230\u4fe1\u7bb1\uff08pendingFunctors_\uff09\uff0c\u95e8\u94c3\uff08wakeup\uff09\u53eb\u9192\u5c4b\u91cc\u7684\u4eba\uff08EventLoop\uff09\u53bb\u53d6\u4fe1\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/03\/end.gif'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"50\" data-original=\"http:\/\/www.fishq.top\/wp-content\/uploads\/2025\/03\/end.gif\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-393\"\/><\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>2025.7.16\ud83d\udc31 \u4e00\u3001Multi-Reactor\u67b6\u6784 Multi-Reactor\u662f\u5178\u578b\u7684\u4e3b\u4eceReactor [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":159,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"","ngg_post_thumbnail":0,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-154","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-6"],"modified_by":"FISHQ","_links":{"self":[{"href":"https:\/\/www.fishq.top\/index.php\/wp-json\/wp\/v2\/posts\/154","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fishq.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fishq.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fishq.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fishq.top\/index.php\/wp-json\/wp\/v2\/comments?post=154"}],"version-history":[{"count":320,"href":"https:\/\/www.fishq.top\/index.php\/wp-json\/wp\/v2\/posts\/154\/revisions"}],"predecessor-version":[{"id":1127,"href":"https:\/\/www.fishq.top\/index.php\/wp-json\/wp\/v2\/posts\/154\/revisions\/1127"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fishq.top\/index.php\/wp-json\/wp\/v2\/media\/159"}],"wp:attachment":[{"href":"https:\/\/www.fishq.top\/index.php\/wp-json\/wp\/v2\/media?parent=154"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fishq.top\/index.php\/wp-json\/wp\/v2\/categories?post=154"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fishq.top\/index.php\/wp-json\/wp\/v2\/tags?post=154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}