{"id":2534,"date":"2025-01-29T14:52:46","date_gmt":"2025-01-29T06:52:46","guid":{"rendered":"https:\/\/guapicoding.com\/?p=2534"},"modified":"2025-10-27T21:56:29","modified_gmt":"2025-10-27T13:56:29","slug":"%e5%8d%8f%e7%a8%8b%e5%ba%93","status":"publish","type":"post","link":"https:\/\/guapicoding.com\/?p=2534","title":{"rendered":"\u534f\u7a0b\u5e93"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u6982\u8ff0\uff08\u5f85\u4fee\u6539\uff09<\/h2>\n\n\n\n<p>\u7ebf\u7a0b\u6c60\u91cc\u6709\u82e5\u5e72\u7ebf\u7a0b\uff0c<strong>\u6bcf\u4e2a\u7ebf\u7a0b\u91cc\u6709\u4e09\u7c7b\u534f\u7a0b\uff1a\u4e3b\u534f\u7a0b\u3001\u8c03\u5ea6\u534f\u7a0b\u548c\u4efb\u52a1\u534f\u7a0b<\/strong>\u3002<\/p>\n\n\n\n<p>\u591a\u7ebf\u7a0b\u901a\u8fc7\u4e92\u65a5\u9501\u62ff\u53d6\u4efb\u52a1\u540e\uff0c\u5229\u7528\u7ebf\u7a0b\u7684\u5c40\u90e8\u53d8\u91cf\uff08\u8c03\u5ea6\u534f\u7a0b\u6307\u9488\uff09\u5404\u81ea\u8c03\u7528\u5b50\u534f\u7a0b\u53bb\u505a\u4efb\u52a1\uff0c\u4e92\u4e0d\u5e72\u6270\u548c\u5f71\u54cd\u5e76\u53d1\u7684\u53bb\u6267\u884c\u4efb\u52a1\u3002<\/p>\n\n\n\n<p><strong>\u8c03\u5ea6\u7ebf\u7a0b\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4e3b\u534f\u7a0b\u5c31\u662f\u8c03\u5ea6\u534f\u7a0b\uff0c\u800c main \u4e3b\u7ebf\u7a0b\u7684\u4e3b\u534f\u7a0b\u548c\u8c03\u5ea6\u534f\u7a0b\u662f\u5206\u5f00\u7684\u3002<\/strong><\/p>\n\n\n\n<p>IO \u534f\u7a0b\u8c03\u5ea6\u5668\u5bf9 idle \u7a7a\u95f2\u534f\u7a0b\u8fdb\u884c\u4e86\u91cd\u5199\uff0c\u4e3b\u534f\u7a0b\u53ea\u8fdb\u884c\u4efb\u52a1\u8c03\u5ea6\uff0cidle \u53ea\u76d1\u542c epoll \u8fdb\u884c\u4efb\u52a1\u6dfb\u52a0\uff0c\u964d\u4f4e\u4e86\u4e0d\u540c\u529f\u80fd\u4e4b\u95f4\u7684\u8026\u5408\uff0c\u4fbf\u4e8e\u540e\u671f\u6269\u5c55\u7ef4\u62a4\u3002\uff08\u9488\u5bf9\u8c03\u5ea6\u7ebf\u7a0b\u800c\u8a00\uff09<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7528\u5230\u667a\u80fd\u6307\u9488\u7684\u573a\u666f<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">shared_ptr<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u7ebf\u7a0b\u6c60\uff0c\u5b58\u50a8\u521d\u59cb\u5316\u597d\u7684\u7ebf\u7a0b\nstd::vector&lt;std::shared_ptr&lt;Thread&gt;&gt; m_threads;<\/code><\/pre>\n\n\n\n<p>\u4f7f\u7528 <code>shared_ptr<\/code> \u7684\u5fc5\u8981\u6027\uff1a\uff08\u5373\u4e3a\u4ec0\u4e48\u4e0d\u76f4\u63a5\u5b58\u50a8 <code>Thread<\/code> \u5bf9\u8c61\u6216\u4f7f\u7528 <code>unique_ptr<\/code>\uff09<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5171\u4eab\u6240\u6709\u6743\n<ul class=\"wp-block-list\">\n<li><code>shared_ptr<\/code> \u5141\u8bb8\u591a\u4e2a\u6a21\u5757\u5171\u4eab\u540c\u4e00\u4e2a <code>Thread<\/code> \u5b9e\u4f8b\uff0c\u907f\u514d\u91cd\u590d\u521b\u5efa\u6216\u9500\u6bc1\u3002<\/li>\n\n\n\n<li>\u7ebf\u7a0b\u5bf9\u8c61\u53ef\u80fd\u5728\u591a\u4e2a\u5730\u65b9\u88ab\u4f7f\u7528\uff0c\u6bd4\u5982\uff1a\n<ol class=\"wp-block-list\">\n<li>\u7ebf\u7a0b\u6c60\u9700\u8981\u7ba1\u7406\u7ebf\u7a0b\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u3002<\/li>\n\n\n\n<li>\u5176\u4ed6\u6a21\u5757\uff08\u4f8b\u5982\u8c03\u5ea6\u5668\uff09\u9700\u8981\u6301\u6709\u67d0\u4e9b\u7ebf\u7a0b\u7684\u5f15\u7528\uff0c\u4ee5\u4fbf\u4e0e\u5b83\u4eec\u4ea4\u4e92\u6216\u63a7\u5236\u5b83\u4eec\u3002<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u751f\u547d\u5468\u671f\u7ba1\u7406\n<ul class=\"wp-block-list\">\n<li>\u53ea\u8981\u6709\u4e00\u4e2a <code>shared_ptr<\/code> \u6301\u6709\u8be5\u5bf9\u8c61\uff0c\u5bf9\u8c61\u5c31\u4e0d\u4f1a\u88ab\u9500\u6bc1\u3002<\/li>\n\n\n\n<li>\u7ebf\u7a0b\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u9700\u8981\u4e0e\u8c03\u5ea6\u5668\u89e3\u8026\uff08\u4f8b\u5982\uff0c\u8c03\u5ea6\u5668\u9500\u6bc1\u540e\uff0c\u7ebf\u7a0b\u53ef\u80fd\u4ecd\u5728\u6267\u884c\u4efb\u52a1\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u907f\u514d\u60ac\u6302\u6307\u9488\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u76f4\u63a5\u5b58\u50a8\u88f8\u6307\u9488\uff08<code>Thread*<\/code>\uff09\uff0c\u5f53\u67d0\u4e2a\u5916\u90e8\u7ec4\u4ef6\u6301\u6709\u8be5\u6307\u9488\u65f6\uff0c\u82e5\u8c03\u5ea6\u5668\u5148\u4e8e\u8be5\u7ec4\u4ef6\u9500\u6bc1\uff0c\u4f1a\u5bfc\u81f4\u60ac\u6302\u6307\u9488\u3002<\/li>\n\n\n\n<li><code>shared_ptr<\/code> \u901a\u8fc7\u5f15\u7528\u8ba1\u6570\u4fdd\u8bc1\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u81f3\u5c11\u4e0e\u6240\u6709\u6301\u6709\u5b83\u7684 <code>shared_ptr<\/code> \u4e00\u6837\u957f\uff0c\u907f\u514d\u60ac\u6302\u6307\u9488\u95ee\u9898\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">thread <\/h2>\n\n\n\n<p><strong>\u4e3a\u4e86\u5f25\u8865\u534f\u7a0b\u7684\u7f3a\u70b9\uff0c\u4f7f\u7528\u591a\u7ebf\u7a0b\u914d\u5408\u591a\u534f\u7a0b\u66f4\u597d\u5730\u5229\u7528 CPU \u7684\u591a\u6838\u8d44\u6e90<\/strong><\/p>\n\n\n\n<p>\u4e3b\u8981\u7528\u4e8e\u521b\u5efa\u5e76\u7ba1\u7406\u5e95\u5c42\u7ebf\u7a0b\uff0c\u4e3a\u534f\u7a0b\u63d0\u4f9b\u8fd0\u884c\u73af\u5883\uff0c\u540c\u65f6\u901a\u8fc7\u7ebf\u7a0b\u5c40\u90e8\u5b58\u50a8\u548c\u540c\u6b65\u673a\u5236\uff0c\u4e3a\u534f\u7a0b\u8c03\u5ea6\u63d0\u4f9b\u5fc5\u8981\u652f\u6301\uff0c\u786e\u4fdd\u534f\u7a0b\u53ef\u4ee5\u5728\u5408\u9002\u7684\u7ebf\u7a0b\u4e0a\u88ab\u6b63\u786e\u7684\u8c03\u5ea6\u548c\u6267\u884c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u540c\u6b65\u64cd\u4f5c <\/strong><\/h3>\n\n\n\n<p>\u5229\u7528\u4e92\u65a5\u91cf\u548c\u6761\u4ef6\u53d8\u91cf\u5b9e\u73b0\u4e86\u4fe1\u53f7\u91cf<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u7528\u4e8e\u7ebf\u7a0b\u65b9\u6cd5\u95f4\u7684\u540c\u6b65\nclass Semaphore \n{\nprivate:\n    std::mutex mtx;                \n    std::condition_variable cv;    \n    int count;                   \n\npublic:\n    \/\/ \u4fe1\u53f7\u91cf\u521d\u59cb\u5316\u4e3a0\n    explicit Semaphore(int count_ = 0) : count(count_) {}\n    \/*\n    explicit \u5173\u952e\u5b57\u7528\u6765\u4fee\u9970\u53ea\u6709\u4e00\u4e2a\u53c2\u6570\u7684\u7c7b\u6784\u9020\u51fd\u6570\uff0c\u4ee5\u8868\u660e\u8be5\u6784\u9020\u51fd\u6570\u662f\u663e\u5f0f\u7684\uff0c\u800c\u975e\u9690\u5f0f\u7684 \n    \u5f53\u4f7f\u7528 explicit \u4fee\u9970\u6784\u9020\u51fd\u6570\u65f6\uff0c\u5b83\u5c06\u7981\u6b62\u7c7b\u5bf9\u8c61\u4e4b\u95f4\u7684\u9690\u5f0f\u8f6c\u6362\uff0c\u4ee5\u53ca\u7981\u6b62\u9690\u5f0f\u8c03\u7528\u62f7\u8d1d\u6784\u9020\u51fd\u6570  \n    \u6bd4\u5982\u9632\u6b62\u51fa\u73b0 Semaphore sem = 3\uff0c\u5c06\u6570\u5b573\u8f6c\u6362\u6210 Semaphore \u5bf9\u8c61\u7684\u8fd9\u79cd\u60c5\u51b5\uff0c\u5fc5\u987b\u6807\u51c6\uff1aSemaphore sem(3);\n    *\/\n    \n    \/\/ P\u64cd\u4f5c\n    void wait() \n    {\n        std::unique_lock&lt;std::mutex&gt; lock(mtx); \/\/ \u6ca1\u6709\u9009\u62e9\u4f7f\u7528 lock_guard \u662f\u56e0\u4e3a\u5b83\u4e0d\u5141\u8bb8\u624b\u52a8\u89e3\u9501\uff0c\u5e76\u4e14\u65e0\u6cd5\u5728 wait \u4e2d\u5c06\u9501\u91ca\u653e\uff0c\u53ea\u80fd\u7b49\u5f85l ock_guard \u51fd\u6570\u7ed3\u675f\n        while (count == 0) { \/\/ \u4e3a\u4e86\u9632\u6b62\u865a\u5047\u5524\u9192\uff0c\u76f4\u5230 count &gt; 0 \u624d\u8df3\u51fa\u5faa\u73af\n            \/*\n            \u8fd9\u91cc\u4f53\u73b0\u4e86 uique_lock \u5141\u8bb8\u5728 cv.wait(lock) \u5185\u624b\u52a8\u89e3\u9501 mtx\uff0c\u800c lock_guard \u4e0d\u5141\u8bb8\u8fd9\u6837\u505a \n            cv.wait(lock) \u5728\u7b49\u5f85\u65f6\u4f1a\u81ea\u52a8\u91ca\u653e mtx\uff0c\u8ba9\u5176\u4ed6\u7ebf\u7a0b\u53ef\u4ee5\u83b7\u53d6\u9501\u5e76\u4fee\u6539 count\n            \u5f53 cv.wait(lock) \u6ee1\u8db3\u6761\u4ef6\u53d8\u91cf\u7684\u6761\u4ef6\u88ab notify_one() \u6216 notify_all() \u5524\u9192\u540e \n            lock \u4f1a\u81ea\u52a8\u91cd\u65b0\u83b7\u53d6 mtx\uff0c\u786e\u4fdd count-- \u64cd\u4f5c\u662f\u5b89\u5168\u7684\n            *\/\n            cv.wait(lock); \/\/ wait for signal\n        }\n        count--;\n    }\n\n    \/\/ V\u64cd\u4f5c\uff1a\u8d1f\u8d23\u7ed9 count++\uff0c\u7136\u540e\u901a\u77e5 wait \u5524\u9192\u7b49\u5f85\u7684\u7ebf\u7a0b\n    void signal() \n    {\n        std::unique_lock&lt;std::mutex&gt; lock(mtx); \/\/ \u52a0\u9501\n        count++;\n        cv.notify_one();  \/\/ signal\uff1a\u6ce8\u610f\u8fd9\u91cc\u7684 one \u6307\u7684\u4e0d\u4e00\u5b9a\u662f\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u6709\u53ef\u80fd\u662f\u591a\u4e2a\n    }\n};<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">fiber <\/h2>\n\n\n\n<p>Fiber \u7c7b\u63d0\u4f9b\u4e86\u534f\u7a0b\u7684\u57fa\u672c\u529f\u80fd\uff0c\u5305\u62ec\u521b\u5efa\u3001\u7ba1\u7406\u3001\u5207\u6362\u548c\u9500\u6bc1\u534f\u7a0b\u3002\u4f7f\u7528 <code>ucontext_t<\/code> \u4fdd\u5b58\u548c\u6062\u590d\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587\uff0c\u5e76\u901a\u8fc7 <code>function&lt;void()&gt;<\/code> \u6765\u5b58\u50a8\u534f\u7a0b\u7684\u6267\u884c\u903b\u8f91\uff08\u5373\u5165\u53e3\u51fd\u6570\uff09\u3002<\/p>\n\n\n\n<p>\u7c7b\u6bd4\u8fdb\u7a0b\u7684\u5c31\u7eea\u3001\u963b\u585e\u7b49\u5404\u79cd\u72b6\u6001\uff0c\u5b9a\u4e49\u4e09\u79cd\u534f\u7a0b\u7684\u72b6\u6001\uff1a\u5c31\u7eea\u6001\u3001\u8fd0\u884c\u6001\u548c\u7ed3\u675f\u6001\uff0c\u4e00\u4e2a\u534f\u7a0b\u8981\u4e48\u6b63\u5728\u8fd0\u884c(RUNNING)\uff0c\u8981\u4e48\u5df2\u5c31\u7eea(READY)\uff0c\u8981\u4e48\u8fd0\u884c\u7ed3\u675f(TERM)\u3002<\/p>\n\n\n\n<p>\u5bf9\u4e8e\u975e\u5bf9\u79f0\u534f\u7a0b\u6765\u8bf4\uff0c\u534f\u7a0b\u9664\u4e86\u521b\u5efa\u8bed\u53e5\u5916\uff0c\u53ea\u6709\u4e24\u79cd\u64cd\u4f5c\uff1aresume \u6062\u590d\u6267\u884c\u548c yield \u8ba9\u51fa\u6267\u884c\u3002\u534f\u7a0b\u7684\u7ed3\u675f\u6ca1\u6709\u4e13\u95e8\u7684\u64cd\u4f5c\uff08\u534f\u7a0b\u7684\u51fd\u6570\u8fd0\u884c\u5b8c\u4e86\u5373\u4e3a\u534f\u7a0b\u7ed3\u675f\uff09\uff0c\u534f\u7a0b\u7ed3\u675f\u65f6\u4f1a\u8c03\u7528\u4e00\u6b21 yield \u64cd\u4f5c\uff0c\u4ece\u4efb\u52a1\u534f\u7a0b\u8fd4\u56de\u5230\u4e3b\u534f\u7a0b\uff08\u8c03\u5ea6\u534f\u7a0b\uff09\u3002<\/p>\n\n\n\n<p><strong>\u5728\u5b9e\u73b0\u534f\u7a0b\u65f6\u9700\u8981\u7ed9\u534f\u7a0b\u7ed1\u5b9a\u4e00\u4e2a\u8fd0\u884c\u51fd\u6570\uff0c\u5e76\u7ed9\u6bcf\u4e00\u4e2a\u521b\u5efa\u7684\u534f\u7a0b\u5206\u914d\u5185\u5b58\u7a7a\u95f4<\/strong>\uff08\u56e0\u4e3a\u5b9e\u73b0\u7684\u662f\u6709\u6808\u534f\u7a0b\uff0c\u5e76\u91c7\u7528\u72ec\u7acb\u6808\u601d\u8def\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6784\u9020\u51fd\u6570<\/h3>\n\n\n\n<p>Fiber \u7c7b\u63d0\u4f9b\u5e26\u53c2\u548c\u65e0\u53c2\u4e24\u4e2a\u6784\u9020\u51fd\u6570\uff0c\u5e26\u53c2\u6784\u9020\u51fd\u6570\u7528\u4e8e\u6784\u9020\u5b50\u534f\u7a0b\uff0c\u65e0\u53c2\u6784\u9020\u51fd\u6570\u7528\u4e8e\u521d\u59cb\u5316\u5f53\u524d\u7ebf\u7a0b\u7684\u534f\u7a0b\u529f\u80fd\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5e26\u53c2\u6784\u9020\u51fd\u6570<\/h4>\n\n\n\n<p>\u521b\u5efa\u4e00\u4e2a\u65b0\u534f\u7a0b\u5e76\u6307\u5b9a\u5176\u5165\u53e3\u51fd\u6570\u3001\u6808\u7684\u5927\u5c0f\u548c\u662f\u5426\u53d7\u8c03\u5ea6\uff0c\u521d\u59cb\u5316 ucontext_t\u4e0a\u4e0b\u6587\uff0c\u5206\u914d\u6808\u7a7a\u95f4\uff0c\u5e76\u901a\u8fc7 make \u5c06\u4e0a\u4e0b\u6587\u4e0e\u5165\u53e3\u51fd\u6570\u7ed1\u5b9a\u3002\u7531\u4e8e\u91c7\u53d6\u7684\u662f\u72ec\u7acb\u6808\u7684\u5f62\u5f0f\uff0c\u6bcf\u4e2a\u65b0\u534f\u7a0b\u90fd\u6709\u81ea\u5df1\u56fa\u5b9a\u5927\u5c0f\u7684\u6808\u7a7a\u95f4\uff08\u6ce8\u610f\uff1a<strong>\u4e3b\u534f\u7a0b\u6ca1\u6709\u72ec\u7acb\u6808\uff0c\u5b83\u8fd0\u884c\u5728\u5f53\u524d\u7ebf\u7a0b\u7684\u6808\u4e0a\uff0c\u4e0d\u5fc5\u5206\u914d\u4e00\u4e2a\u65b0\u7684\u72ec\u7acb\u6808<\/strong>\uff09\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u65e0\u53c2\u6784\u9020\u51fd\u6570<\/h4>\n\n\n\n<p>\u8fd9\u4e2a\u51fd\u6570\u88ab\u5b9a\u4e49\u4e3a\u79c1\u6709\u7684\u6210\u5458\u51fd\u6570\uff0c\u4e0d\u5141\u8bb8\u5728\u7c7b\u5916\u8c03\u7528\uff0c\u53ea\u80fd\u901a\u8fc7 GetThis() \u65b9\u6cd5\u8fdb\u884c\u8c03\u7528\u3002<\/p>\n\n\n\n<p>\u4f5c\u7528\u662f\u521d\u59cb\u5316\u5f53\u524d\u7ebf\u7a0b\u7684\u534f\u7a0b\u529f\u80fd\uff0c\u5373\u6784\u9020\u7ebf\u7a0b\u7684\u4e3b\u534f\u7a0b\u5bf9\u8c61\uff0c\u4ee5\u53ca\u5bf9\u53d8\u91cf t_fiber\uff08\u6b63\u5728\u8fd0\u884c\u7684\u534f\u7a0b\uff09\u3001t_thread_fiber\uff08\u4e3b\u534f\u7a0b\uff09\u3001t_scheduler_fiber\uff08\u8c03\u5ea6\u534f\u7a0b\uff09\u8fdb\u884c\u8d4b\u503c\u3002<\/p>\n\n\n\n<p>\u5728\u4f7f\u7528\u534f\u7a0b\u4e4b\u524d\u5fc5\u987b\u8c03\u7528\u4e00\u6b21 GetThis()\uff0c\u76ee\u7684\u662f\u521d\u59cb\u5316\u4e3b\u534f\u7a0b\u548c\u8c03\u5ea6\u534f\u7a0b\uff08\u9ed8\u8ba4\u4e3b\u534f\u7a0b\u5145\u5f53\u8c03\u5ea6\u534f\u7a0b\uff0c\u8fd9\u91cc\u662f\u9488\u5bf9\u8c03\u5ea6\u7ebf\u7a0b\u800c\u8a00\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><br>resume \/ yield <\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><br>resume<\/h4>\n\n\n\n<p><br>\u5728\u975e\u5bf9\u79f0\u534f\u7a0b\u4e2d\uff0c\u6267\u884c resume \u8981\u5206\u4e24\u79cd\u60c5\u51b5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6210\u5458\u53d8\u91cf m_runInScheduler \u4e3a true\uff0c\u8bf4\u660e\u8be5\u5b50\u534f\u7a0b\u53d7\u8c03\u5ea6\u534f\u7a0b\u7684\u8c03\u5ea6\u3002\u4f7f\u7528 swapcontext \u51fd\u6570\u4fdd\u5b58\u6b64\u65f6\u7ebf\u7a0b\u7684\u5c40\u90e8\u53d8\u91cf\u7684\u8c03\u5ea6\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587\uff0c\u7136\u540e\u6fc0\u6d3b\u7ebf\u7a0b\u5c40\u90e8\u53d8\u91cf\u7684\u5b50\u534f\u7a0b\u53bb\u6267\u884c\u4efb\u52a1\uff0c\u4e5f\u5c31\u662f\u7531\u8c03\u5ea6\u534f\u7a0b t_scheduler_fiber \u5207\u6362\u5230\u8be5\u534f\u7a0b\u6062\u590d\u6267\u884c\u3002<\/li>\n\n\n\n<li>\u6210\u5458\u53d8\u91cf m_runInScheduler \u4e3a false\uff0c\u8bf4\u660e\u8be5\u5b50\u534f\u7a0b\u4e0d\u53d7\u8c03\u5ea6\u534f\u7a0b\u7684\u8c03\u5ea6\u3002\u6b64\u65f6\u7684\u6267\u884c\u8fc7\u7a0b\u5c31\u662f\u4fdd\u5b58\u4e3b\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587\uff0c\u6fc0\u6d3b\u5b50\u534f\u7a0b\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u5c31\u4e0d\u9700\u8981\u8c03\u5ea6\u534f\u7a0b\u8fdb\u884c\u53c2\u4e0e\u4e86\u3002\uff08<strong>\u8c03\u5ea6\u7ebf\u7a0b\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4e3b\u534f\u7a0b\u5c31\u662f\u8c03\u5ea6\u534f\u7a0b\uff0c\u800c main \u4e3b\u7ebf\u7a0b\u7684\u4e3b\u534f\u7a0b\u548c\u8c03\u5ea6\u534f\u7a0b\u662f\u5206\u5f00\u7684<\/strong>\uff09<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">yield<\/h4>\n\n\n\n<p>\u540c resume\uff0c\u6839\u636e m_runInScheduler \u6765\u5224\u65ad\u6b64\u65f6\u7684 yield \u662f\u7531\u54ea\u4e2a\u534f\u7a0b\u5230\u54ea\u4e2a\u534f\u7a0b<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c m_runInScheduler \u4e3atrue\uff0c\u4ee3\u8868\u8be5\u534f\u7a0b\u53d7\u8c03\u5ea6\u534f\u7a0b\u7684\u8c03\u5ea6\uff0c\u56e0\u6b64\u4fdd\u5b58\u5b50\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587\uff0c\u5c06\u6267\u884c\u6743\u5207\u6362\u7ed9\u8c03\u5ea6\u534f\u7a0b<\/li>\n\n\n\n<li>\u5982\u679c\u4e3afalse\uff0c\u5219\u4fdd\u5b58\u5b50\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587\uff0c\u5c06\u6267\u884c\u6743\u5207\u6362\u7ed9\u4e3b\u534f\u7a0b<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">reset \u51fd\u6570<\/h3>\n\n\n\n<p>\u590d\u7528\u4e00\u4e2a\u5df2\u7ec8\u6b62\u7684\u534f\u7a0b\u5bf9\u8c61\uff1a\u91cd\u7f6e\u534f\u7a0b\u7684\u5165\u53e3\u51fd\u6570\uff0c\u91cd\u65b0\u8bbe\u7f6e\u4e0a\u4e0b\u6587\uff0c\u5c06\u534f\u7a0b\u72b6\u6001\u4ece TERM \u6539\u4e3a READY\uff0c\u4ece\u800c\u907f\u514d\u9891\u7e41\u521b\u5efa\u548c\u9500\u6bc1\u5bf9\u8c61\u5e26\u6765\u7684\u5f00\u9500\uff08\u5728\u6709\u534f\u7a0b\u6c60\u7684\u60c5\u51b5\u4e0b\uff0c\u5c31\u4f1a\u9891\u7e41\u8c03\u7528\u8be5\u51fd\u6570\uff09\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">scheduler <\/h2>\n\n\n\n<p>\u5728 scheduler \u7c7b\u4e2d\uff0c\u7531\u4e8e\u4e00\u5f00\u59cb\u6ca1\u6709\u4efb\u52a1\uff0c\u6240\u4ee5\u662f\u4e3b\u534f\u7a0b\u548c\u8c03\u5ea6\u534f\u7a0b\uff08\u4e5f\u53ef\u4ee5\u7406\u89e3\u6210\u5b50\u534f\u7a0b\uff09\u5728\u4e92\u76f8\u5207\u6362\u3002\u5f53\u6709\u4efb\u52a1\u6765\u4e86\uff0c\u6b64\u65f6\u5b50\u534f\u7a0b\uff08\u4efb\u52a1\u534f\u7a0b\uff09\u53bb\u8c03\u7528 resume\uff0cSetThis \u5c06\u8868\u793a\u5f53\u524d\u8fd0\u884c\u7684\u534f\u7a0b\u7684 t_fiber \u53d8\u91cf\u8bbe\u7f6e\u4e3a\u5b50\u534f\u7a0b\u3002\u7136\u540e\u8bb0\u5f55\u8c03\u5ea6\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587\uff08\u65b9\u4fbf yield \u7684\u65f6\u5019\u5207\u56de\u53bb\uff09\uff0c\u6fc0\u6d3b\u5b50\u534f\u7a0b\u4e0a\u4e0b\u6587\uff0c\u8fd0\u884c\u5b50\u534f\u7a0b\u5373\u53ef\u3002<\/p>\n\n\n\n<p>\u7b80\u5355\u6765\u8bf4\uff1a<strong>\u6ca1\u4e8b\u7684\u65f6\u5019\u5c31\u662f\u4e3b\u534f\u7a0b\u548c\u8c03\u5ea6\u534f\u7a0b\u73a9\uff0c\u7b49\u5230\u6709\u4efb\u52a1\u4e86\u5c31\u8ba9\u8c03\u5ea6\u534f\u7a0b\u548c\u5b50\u534f\u7a0b\u73a9<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u534f\u7a0b\u8c03\u5ea6\u5668<\/h3>\n\n\n\n<p>\u8c03\u5ea6\u5668\u521b\u5efa\u540e\uff0c\u5185\u90e8\u9996\u5148\u4f1a\u521b\u5efa\u4e00\u4e2a\u8c03\u5ea6<strong>\u7ebf\u7a0b\u6c60<\/strong>\u3002\u8c03\u5ea6\u5f00\u59cb\u540e\uff0c\u6240\u6709\u8c03\u5ea6\u7ebf\u7a0b\u6309\u987a\u5e8f\u4ece\u4efb\u52a1\u961f\u5217\u91cc\u53d6\u4efb\u52a1\u6267\u884c\uff0c\u8c03\u5ea6\u7ebf\u7a0b\u6570\u8d8a\u591a\uff0c\u80fd\u591f\u540c\u65f6\u8c03\u5ea6\u7684\u4efb\u52a1\u4e5f\u5c31\u8d8a\u591a\u3002\u5f53\u6240\u6709\u4efb\u52a1\u90fd\u8c03\u5ea6\u5b8c\u540e\uff0c\u8c03\u5ea6\u7ebf\u7a0b\u5c31\u505c\u6b62\u4e0b\u6765\u7b49\u65b0\u7684\u4efb\u52a1\u8fdb\u6765\u3002<\/p>\n\n\n\n<p>\u6dfb\u52a0\u8c03\u5ea6\u4efb\u52a1\u7684\u672c\u8d28\u5c31\u662f\u5f80\u8c03\u5ea6\u5668\u7684\u4efb\u52a1\u961f\u5217\u91cc\u585e\u4efb\u52a1\uff0c\u5e76\u4e14\u8981\u901a\u77e5\u8c03\u5ea6\u7ebf\u7a0b\u6709\u65b0\u7684\u4efb\u52a1\u6765\u4e86\u3002\u5bf9\u4e8e\u8c03\u5ea6\u5668\u6765\u8bf4\uff0c\u9664\u4e86\u534f\u7a0b\uff0c\u51fd\u6570\u4e5f\u662f\u8c03\u5ea6\u5668\u9700\u8981\u8c03\u5ea6\u7684\u4efb\u52a1\u3002\u56e0\u4e3a\u534f\u7a0b\u672c\u8eab\u5c31\u662f\u51fd\u6570\u548c\u51fd\u6570\u8fd0\u884c\u72b6\u6001\u7684\u7ec4\u5408\uff0c\u4f46\u5728\u5b9e\u9645\u8fd0\u884c\u4e2d\u8fd8\u662f\u8981\u5148\u628a\u51fd\u6570\u5305\u88c5\u6210\u534f\u7a0b\uff0c\u534f\u7a0b\u8c03\u5ea6\u5668\u7684\u5b9e\u73b0\u91cd\u70b9\u8fd8\u662f\u4ee5\u534f\u7a0b\u4e3a\u4e3b\u3002<\/p>\n\n\n\n<p><strong>\u8c03\u5ea6\u5668\u5185\u90e8\u7ef4\u62a4\u4e00\u4e2a\u4efb\u52a1\u961f\u5217\u548c\u4e00\u4e2a\u8c03\u5ea6\u7ebf\u7a0b\u6c60<\/strong>\uff0c\u8c03\u5ea6\u7b97\u6cd5\u91c7\u7528<strong>\u5148\u6765\u5148\u670d\u52a1<\/strong>\u7b97\u6cd5\u3002\u5f00\u59cb\u8c03\u5ea6\u540e\uff0c\u7ebf\u7a0b\u6c60\u4e2d\u7684\u8c03\u5ea6\u7ebf\u7a0b\u4ece\u4efb\u52a1\u961f\u5217\u91cc\u6309\u987a\u5e8f\u53d6\u4efb\u52a1\u6267\u884c\uff0c\u8c03\u5ea6\u7ebf\u7a0b\u53ef\u4ee5\u5305\u542b caller \u7ebf\u7a0b\uff08\u5373 main \u51fd\u6570\u6240\u5728\u7684\u7ebf\u7a0b\uff0c\u56e0\u4e3a\u5728 main \u51fd\u6570\u4e2d\u521b\u5efa\u7684\u8c03\u5ea6\u5668\uff09\u3002\u5f53\u5168\u90e8\u7684\u4efb\u52a1\u6267\u884c\u5b8c\u6210\u540e\uff0c\u8c03\u5ea6\u5668\u505c\u6b62\u8c03\u5ea6\uff0c\u7b49\u5f85\u65b0\u7684\u4efb\u52a1\u5230\u6765\u3002\u5f53\u65b0\u7684\u4efb\u52a1\u5230\u6765\uff0c\u901a\u77e5\u7ebf\u7a0b\u6c60\u91cd\u65b0\u5f00\u59cb\u8fd0\u884c\u8c03\u5ea6\u3002\u5f53\u771f\u6b63\u505c\u6b62\u8c03\u5ea6\u65f6\uff0c\u5404\u8c03\u5ea6\u7ebf\u7a0b\u9000\u51fa\uff0c\u8c03\u5ea6\u5668\u505c\u6b62\u5de5\u4f5c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8c03\u5ea6\u65f6\u7684\u534f\u7a0b\u5207\u6362\u95ee\u9898<\/h3>\n\n\n\n<p><strong>1.\u82e5\u4e3b\u7ebf\u7a0b\u4e0d\u53c2\u4e0e\u8c03\u5ea6<\/strong> <\/p>\n\n\n\n<p>\u5373\u5f53 <code>use_caller<\/code> \u4e3a <code>false<\/code> \u65f6\uff0c\u4e3b\u7ebf\u7a0b\u4e0d\u53c2\u4e0e\u8c03\u5ea6\uff0c\u56e0\u6b64\u9700\u8981\u521b\u5efa\u65b0\u7684\u8c03\u5ea6\u7ebf\u7a0b\u3002\u8c03\u5ea6\u7ebf\u7a0b\u7684\u5165\u53e3\u51fd\u6570\u4f1a\u542f\u52a8\u8c03\u5ea6\u534f\u7a0b\uff08\u4e3b\u534f\u7a0b\uff09\uff0c\u8be5\u8c03\u5ea6\u534f\u7a0b\u8d1f\u8d23\u4ece\u4efb\u52a1\u961f\u5217\u4e2d\u53d6\u4efb\u52a1\uff0c\u5e76\u5207\u6362\u5230\u5b50\u534f\u7a0b\u6267\u884c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/01\/image-3.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"980\" height=\"612\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/01\/image-3.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2697\"  sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/div><\/figure>\n\n\n\n<p>main \u4e3b\u7ebf\u7a0b\uff08\u4e5f\u5c31\u662f\u8c03\u5ea6\u5668\u7ebf\u7a0b\uff09\u4e0d\u53c2\u4e0e\u534f\u7a0b\u7684\u8c03\u5ea6\uff0c\u5b83\u8981\u505a\u7684\u662f\u521b\u5efa\u8c03\u5ea6\u5668\uff0c\u5c06\u4efb\u52a1\u6dfb\u52a0\u5230\u8c03\u5ea6\u5668\u4e2d\u7684\u4efb\u52a1\u961f\u5217\u4e2d\uff0c\u5e76\u5728\u9002\u5f53\u7684\u65f6\u673a\u505c\u6b62\u8c03\u5ea6\u5668\u3002\u5f53\u8c03\u5ea6\u5668\u505c\u6b62\u65f6\uff0cmain \u51fd\u6570\u8981\u7b49\u5f85\u6240\u6709\u8c03\u5ea6\u7ebf\u7a0b\u7ed3\u675f\u540e\u518d\u9000\u51fa\u3002<\/p>\n\n\n\n<p>\u65b0\u521b\u5efa\u7684\u8c03\u5ea6\u7ebf\u7a0b\uff08\u7ebf\u7a0b\u6c60\u4e2d\u7684\uff09\u542f\u52a8\u540e\u4f1a\u8fd0\u884c\u8c03\u5ea6\u5668\u7684\u4e3b\u5faa\u73af\uff0c\u8d1f\u8d23\u4ece\u4efb\u52a1\u961f\u5217\u4e2d\u53d6\u51fa\u4efb\u52a1\u5e76\u5224\u65ad m_runlSchedluer \u7684\u503c\u3002\u82e5\u4e3a true \u5c31\u662f\u65b0\u7ebf\u7a0b\u7684\u8c03\u5ea6\u534f\u7a0b\u548c\u5b50\u534f\u7a0b\u8fdb\u884c\u4e0a\u4e0b\u6587\u7684\u5207\u6362\uff0c\u82e5\u4e3a false \u5219\u662f\u65b0\u7ebf\u7a0b\u7684\u4e3b\u534f\u7a0b\u548c\u5b50\u534f\u7a0b\u8fdb\u884c\u4e0a\u4e0b\u6587\u5207\u6362\u3002<\/p>\n\n\n\n<p><strong>2.\u82e5\u4e3b\u7ebf\u7a0b\u4e5f\u53c2\u4e0e\u8c03\u5ea6<\/strong> <br>use_caller \u4e3a true \u65f6\uff0c\u53ef\u4ee5\u662f\u591a\u7ebf\u7a0b\uff0c\u4e5f\u53ef\u4ee5\u662f\u5355\u7ebf\u7a0b\u3002<strong>\u5982\u679c\u662f\u591a\u7ebf\u7a0b<\/strong>\uff0c\u90a3\u4e48\u5c31\u548c\u4e0a\u9762\u4e00\u6837\uff0c\u53ea\u4e0d\u8fc7\u4e0d\u4e00\u5b9a\u9700\u8981\u521b\u5efa\u53e6\u5916\u7684\u7ebf\u7a0b\u4f5c\u4e3a\u8c03\u5ea6\u7ebf\u7a0b\u4e86\u3002\u73b0\u5728\u53ef\u4ee5\u662f\u4e3b\u7ebf\u7a0b\u5145\u5f53\u8c03\u5ea6\u7ebf\u7a0b\uff0c\u90a3\u4e48\u5b83\u9664\u4e86\u5207\u6362\u4e0a\u4e0b\u6587\u53bb\u6267\u884c\u5b50\u534f\u7a0b\u4efb\u52a1\u5916\uff0c\u8fd8\u8d1f\u8d23\u4e86\u4efb\u52a1\u7684\u5206\u914d\u548c\u8c03\u5ea6\u5668\u7684\u505c\u6b62\uff0c\u4e5f\u5c31\u662f\u4e3b\u7ebf\u7a0b\u7684\u529f\u80fd\u53d8\u591a\u4e86\u3002 <\/p>\n\n\n\n<p><strong>\u5982\u679c\u662f\u5355\u7ebf\u7a0b<\/strong>\uff0c\u4e14 main \u4e3b\u7ebf\u7a0b\u53c2\u4e0e\u8c03\u5ea6\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/01\/image-4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"964\" height=\"637\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/01\/image-4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2698\"  sizes=\"auto, (max-width: 964px) 100vw, 964px\" \/><\/div><\/figure>\n\n\n\n<p><br>main \u51fd\u6570\u6240\u5728\u7684\u4e3b\u7ebf\u7a0b\u4e2d\u6709\u4e09\u7c7b\u534f\u7a0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>main \u51fd\u6570\u5bf9\u5e94\u7684\u4e3b\u534f\u7a0b<\/li>\n\n\n\n<li>\u8c03\u5ea6\u534f\u7a0b<\/li>\n\n\n\n<li>\u5f85\u8c03\u5ea6\u7684\u4efb\u52a1\u534f\u7a0b<\/li>\n<\/ul>\n\n\n\n<p><br><strong>\u8fd9\u4e09\u7c7b\u534f\u7a0b\u7684\u8fd0\u884c\u987a\u5e8f\u5982\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>main \u51fd\u6570\u4e3b\u534f\u7a0b\u8fd0\u884c\uff0c\u521b\u5efa\u8c03\u5ea6\u5668\uff0c\u5e76\u5411\u8c03\u5ea6\u5668\u6dfb\u52a0\u4efb\u52a1\u3002<\/li>\n\n\n\n<li>\u5f00\u59cb\u534f\u7a0b\u7684\u8c03\u5ea6\uff0c\u4e3b\u534f\u7a0b\u8ba9\u51fa\u6267\u884c\u6743\u7ed9\u8c03\u5ea6\u534f\u7a0b\uff0c\u8c03\u5ea6\u534f\u7a0b\u6309\u987a\u5e8f\u8c03\u5ea6\u4efb\u52a1\u961f\u5217\u4e2d\u7684\u6240\u6709\u4efb\u52a1\u3002<\/li>\n\n\n\n<li>\u6bcf\u6b21\u6267\u884c\u4e00\u4e2a\u4efb\u52a1\uff0c\u8c03\u5ea6\u534f\u7a0b\u90fd\u8981\u8ba9\u51fa\u6267\u884c\u6743\uff0c\u5207\u5230\u8be5\u4efb\u52a1\u7684\u534f\u7a0b\u91cc\u53bb\u6267\u884c\u3002\u4efb\u52a1\u6267\u884c\u7ed3\u675f\u540e\uff0c\u518d\u5207\u56de\u5230\u8c03\u5ea6\u534f\u7a0b\uff0c\u7ee7\u7eed\u4e0b\u4e00\u4e2a\u4efb\u52a1\u7684\u8c03\u5ea6\u3002<\/li>\n\n\n\n<li>\u6240\u6709\u4efb\u52a1\u90fd\u6267\u884c\u5b8c\u540e\uff0c\u8c03\u5ea6\u534f\u7a0b\u8ba9\u51fa\u6267\u884c\u6743\u5e76\u5207\u56de main \u51fd\u6570\u7684\u4e3b\u534f\u7a0b\uff0c\u4ee5\u4fdd\u8bc1\u7a0b\u5e8f\u7684\u987a\u5229\u7ed3\u675f\u3002<br><\/li>\n<\/ol>\n\n\n\n<p><strong>\u603b\u4f53\u7684\u8fc7\u7a0b<\/strong>\uff1amain \u521b\u5efa\u8c03\u5ea6\u5668 -&gt; \u6dfb\u52a0\u4efb\u52a1 -&gt; \u4e3b\u534f\u7a0b\u5207\u6362\u5230\u8c03\u5ea6\u534f\u7a0b -&gt; \u4ece\u4efb\u52a1\u961f\u5217\u6309\u987a\u5e8f\u62ff\u53d6\u4efb\u52a1 -&gt; \u8c03\u5ea6\u534f\u7a0b\u5207\u6362\u5230\u5b50\u534f\u7a0b -&gt; \u6267\u884c\u4efb\u52a1 -&gt; \u5b50\u534f\u7a0b\u5207\u6362\u5230\u8c03\u5ea6\u534f\u7a0b -&gt; \u7ee7\u7eed\u4e0b\u4e00\u4e2a\u4efb\u52a1\u7684\u8c03\u5ea6 -&gt; \u00b7\u00b7\u00b7\u00b7\u00b7\u00b7 -&gt; \u6240\u6709\u4efb\u52a1\u90fd\u88ab\u8c03\u5ea6\u6267\u884c\u5b8c -&gt; \u8c03\u5ea6\u534f\u7a0b\u5207\u6362\u5230\u4e3b\u534f\u7a0b<\/p>\n\n\n\n<p>\u5728\u5177\u4f53\u5b9e\u73b0\u4e0a\uff0csylar \u7684\u5b50\u534f\u7a0b\u53ea\u80fd\u548c\u4e3b\u534f\u7a0b\u5207\u6362\uff0c\u800c\u4e0d\u80fd\u548c\u53e6\u4e00\u4e2a\u5b50\u534f\u7a0b\uff08\u6bd4\u5982\u8c03\u5ea6\u534f\u7a0b\uff09\u5207\u6362\u3002\u56e0\u4e3a\u4e24\u4e2a\u5b50\u534f\u7a0b\u76f8\u4e92\u5207\u6362\uff0c\u4e0a\u4e0b\u6587\u90fd\u4f1a\u53d8\u6210\u5b50\u534f\u7a0b\u7684\uff0c\u4e3b\u534f\u7a0b\u5374\u6ca1\u6709\u4fdd\u5b58\u5c31\u5207\u6362\u4e0d\u56de\u53bb\u4e86\u3002\u8fd9\u4ee3\u8868 sylar \u4e3b\u7ebf\u7a0b\u7684\u4e3b\u534f\u7a0b\u65e2\u8981\u521b\u5efa\u8c03\u5ea6\u5668\uff0c\u76d1\u542c\u4e8b\u4ef6\u6dfb\u52a0\u5230\u4efb\u52a1\u961f\u5217\uff0c\u53c8\u8981\u5145\u5f53\u8c03\u5ea6\u534f\u7a0b\u7684\u4f5c\u7528\uff0c\u5207\u6362\u5230\u5b50\u534f\u7a0b\u6267\u884c\u4efb\u52a1\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u4e3b\u7ebf\u7a0b\u7684\u4e3b\u534f\u7a0b\u4efb\u52a1\u5f88\u91cd\u3002<\/p>\n\n\n\n<p>\u800c\u672c\u9879\u76ee\u4f7f\u7528<strong>\u4e3b\u534f\u7a0b+\u8c03\u5ea6\u534f\u7a0b+\u4efb\u52a1\u534f\u7a0b<\/strong>\uff08\u5373\u6709\u4e24\u7c7b\u5b50\u534f\u7a0b\uff09\u7684\u8bbe\u8ba1\u601d\u8def\uff0c\u6709\u66f4\u597d\u7684\u7075\u6d3b\u6027\u548c\u62d3\u5c55\u6027\uff0c\u5982\u4f55\u89e3\u51b3\u4e0a\u8ff0\u95ee\u9898\uff1f<br><br><strong>\u53ea\u9700\u8981\u7ed9\u6bcf\u4e2a\u7ebf\u7a0b\u589e\u52a0\u4e00\u4e2a\u7ebf\u7a0b\u5c40\u90e8\u53d8\u91cf\uff08\u8c03\u5ea6\u534f\u7a0b\u7684 Fiber \u6307\u9488\uff09\uff0c\u7528\u4e8e\u4fdd\u5b58\u8c03\u5ea6\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587<\/strong>\u3002\u8fd9\u6837\u6bcf\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u540c\u65f6\u4fdd\u5b58\u4e09\u4e2a\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587\uff0c\u534f\u7a0b\u5c31\u80fd\u6839\u636e\u81ea\u5df1\u7684\u8eab\u4efd\u6765\u9009\u62e9\u548c\u54ea\u4e2a\u534f\u7a0b\u8fdb\u884c\u5207\u6362\uff0c\u5177\u4f53\u7684\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7ed9\u534f\u7a0b\u7c7b\u589e\u52a0\u4e00\u4e2a bool \u7c7b\u578b\u7684\u6210\u5458 m_runInScheduler\uff0c\u7528\u4e8e\u8bb0\u5f55\u8be5\u534f\u7a0b\u662f\u5426\u53d7\u8c03\u5ea6\u5668\u7684\u8c03\u5ea6\u3002<\/li>\n\n\n\n<li>\u521b\u5efa\u534f\u7a0b\u65f6\uff0c\u6839\u636e\u534f\u7a0b\u7684\u8eab\u4efd\u6307\u5b9a\u5bf9\u5e94\u7684\u534f\u7a0b\u7c7b\u578b\uff1a\u60f3\u88ab\u8c03\u5ea6\u5668\u8c03\u5ea6\u7684\u534f\u7a0b\u7684 m_runlScheduler \u8bbe\u4e3a true\uff0c\u7ebf\u7a0b\u4e3b\u534f\u7a0b\u548c\u8c03\u5ea6\u534f\u7a0b\u7684 m_runnInScheduler \u8bbe\u4e3a false\u3002<\/li>\n\n\n\n<li>resume \u4e00\u4e2a\u534f\u7a0b\u65f6\uff0c\u5982\u679c\u8fd9\u4e2a\u534f\u7a0b\u7684 m_runnInScheduler \u4e3a true\uff0c\u8868\u793a\u8fd9\u4e2a\u534f\u7a0b\u53d7\u8c03\u5ea6\u5668\u7684\u8c03\u5ea6\u3002\u90a3\u4e48\u6b64\u65f6\u8fd9\u4e2a\u534f\u7a0b\u5c31\u5e94\u8be5\u548c\u4e09\u4e2a\u7ebf\u7a0b\u5c40\u90e8\u53d8\u91cf\u4e2d\u7684\u8c03\u5ea6\u534f\u7a0b\u8fdb\u884c\u5207\u6362\uff1b\u540c\u7406\uff0c\u5728 yield \u65f6\uff0c\u4e5f\u5e94\u8be5\u6062\u590d\u8c03\u5ea6\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587\uff0c\u8868\u793a\u5b50\u534f\u7a0b\u5207\u56de\u5230\u8c03\u5ea6\u534f\u7a0b\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u534f\u7a0b\u7684 m_runnInScheduler \u4e3a false\uff0c\u8868\u793a\u8fd9\u4e2a\u534f\u7a0b\u4e0d\u53d7\u8c03\u5ea6\u5668\u7684\u8c03\u5ea6\u3002\u90a3\u4e48\u5728 resume 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\u7684\u60c5\u51b5\u4e0b\uff1a<strong>\u4e3b\u7ebf\u7a0b\u7684\u4e3b\u534f\u7a0b\u521b\u5efa\u8c03\u5ea6\u5668\uff0c\u76d1\u542c\u4e8b\u4ef6\u5e76\u5411\u8c03\u5ea6\u5668\u6dfb\u52a0\u4efb\u52a1<\/strong>\uff1b<strong>\u8c03\u5ea6\u534f\u7a0b\u4ece\u4efb\u52a1\u961f\u5217\u4e2d\u53d6\u51fa\u4efb\u52a1\uff08\u672c\u8d28\u662f\u534f\u7a0b\uff09\u5e76\u5207\u6362\u5230\u4efb\u52a1\u534f\u7a0b\u53bb\u6267\u884c<\/strong>\uff1b<strong>\u4efb\u52a1\u534f\u7a0b\u5c31\u6267\u884c\u4efb\u52a1<\/strong>\u3002<strong>\u4e09\u7c7b\u534f\u7a0b\u5404\u53f8\u5176\u804c\uff0c\u964d\u4f4e\u4e86\u4e0d\u540c\u529f\u80fd\u4e4b\u95f4\u7684\u8026\u5408<\/strong>\uff0c\u4fbf\u4e8e\u540e\u671f\u6269\u5c55\u7ef4\u62a4\uff08\u8fd9\u4e5f\u662f<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u672c\u9879\u76ee\u76f8\u8f83\u4e8e sylar \u7684\u4f18\u5316\u4e4b\u4e00<\/mark><\/strong>\uff09\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">timer <\/h2>\n\n\n\n<p>\u5b9e\u73b0\u4e86\u5b9a\u65f6\u5668\uff08Timer\uff09\u548c\u5b9a\u65f6\u5668\u7ba1\u7406\u5668\uff08TimerManager\uff09\uff0c\u4e3b\u8981\u7528\u4e8e\u7ba1\u7406\u5b9a\u65f6\u4efb\u52a1\uff0c\u652f\u6301\u5728\u8bbe\u5b9a\u7684\u65f6\u95f4\u540e\u6267\u884c\u67d0\u4e9b\u64cd\u4f5c\uff0c\u5e76\u4e14\u53ef\u4ee5\u7ba1\u7406\u591a\u4e2a\u5b9a\u65f6\u5668\uff0c\u6bd4\u5982\u6dfb\u52a0\u3001\u5220\u9664\u3001\u5237\u65b0\u7b49\u64cd\u4f5c\u3002<br><br>\u4e3a\u4ec0\u4e48\u8981\u505a\u5b9a\u65f6\u5668\uff1a\u4e3a\u4e86\u5b9e\u73b0\u534f\u7a0b\u8c03\u5ea6\u5668\u5bf9\u5b9a\u65f6\u4efb\u52a1\u7684\u8c03\u5ea6\uff0c\u670d\u52a1\u5668\u4e0a\u7ecf\u5e38\u8981\u5904\u7406\u5b9a\u65f6\u4e8b\u4ef6\uff0c\u6bd4\u59823\u79d2\u540e\u5173\u95ed\u4e00\u4e2a\u8fde\u63a5\uff0c\u6216\u662f\u5b9a\u671f\u68c0\u6d4b\u4e00\u4e2a\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u72b6\u6001\u3002<\/p>\n\n\n\n<p>\u65e0\u8bba\u662f\u5347\u5e8f\u94fe\u8868\u8fd8\u662f\u65f6\u95f4\u8f6e\u7684\u8bbe\u8ba1\u90fd\u4f9d\u8d56\u4e00\u4e2a\u56fa\u5b9a\u5468\u671f\u89e6\u53d1\u7684 tick \u4fe1\u53f7\uff0c\u6bd4\u5982\u4e09\u79d2\u4e3a\u4e00\u4e2a\u6807\u51c6\u89e6\u53d1\u4fe1\u53f7\uff0c\u7136\u540e\u68c0\u67e5\u662f\u5426\u6709\u8d85\u65f6\u5b9a\u65f6\u5668\uff0c\u5982\u679c\u6ca1\u6709\u5c31\u7ee7\u7eed\u7b49\u4e0b\u4e00\u4e2a\u4e09\u79d2\u3002<\/p>\n\n\n\n<p>\u8fd9\u6837\u7684\u8bbe\u8ba1\u6bd4\u8f83\u7b28\u62d9\u4e14\u7cbe\u786e\u5ea6\u4f4e\uff0c\u8fd8\u6709\u53e6\u5916\u4e00\u79cd\u8bbe\u8ba1\u601d\u8def\uff1a<\/p>\n\n\n\n<p><strong>\u6bcf\u6b21\u53d6\u51fa\u6240\u6709\u5b9a\u65f6\u5668\u4e2d\u8d85\u65f6\u65f6\u95f4\u6700\u5c0f\u7684\u8d85\u65f6\u503c\u4f5c\u4e3a\u4e00\u4e2a tick \u4fe1\u53f7<\/strong>\uff0c\u4e00\u65e6 tick \u89e6\u53d1\uff0c\u8d85\u65f6\u65f6\u95f4\u6700\u5c0f\u7684\u5b9a\u65f6\u5668\u5fc5\u7136\u5230\u671f\u3002\u5904\u7406\u5b8c\u5df2\u8d85\u65f6\u7684\u5b9a\u65f6\u5668\u540e\uff0c\u518d\u4ece\u5269\u4f59\u7684\u5b9a\u65f6\u5668\u4e2d\u627e\u51fa\u8d85\u65f6\u65f6\u95f4\u6700\u5c0f\u7684\u4e00\u4e2a\uff0c\u5e76\u5c06\u8fd9\u4e2a\u6700\u5c0f\u65f6\u95f4\u4f5c\u4e3a\u4e0b\u4e00\u4e2a tick\uff0c\u5982\u6b64\u53cd\u590d\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u8f83\u4e3a\u7cbe\u786e\u7684\u5b9a\u65f6\u3002<\/p>\n\n\n\n<p>\u672c\u9879\u76ee\u4f7f\u7528\u7684\u662f<strong>\u6700\u5c0f\u5806<\/strong>\uff08\u5177\u4f53\u5b9e\u73b0\u7528\u7684\u662f <code><strong>std::set<\/strong><\/code>\uff09\uff0c\u56e0\u4e3a\u53ef\u4ee5\u5f88\u5feb\u7684\u83b7\u53d6\u5230\u5f53\u524d\u6700\u5c0f\u8d85\u65f6\u65f6\u95f4\uff0c\u6240\u6709\u7684\u5b9a\u65f6\u5668\u6839\u636e<strong>\u7edd\u5bf9\u7684\u8d85\u65f6\u65f6\u95f4\u70b9\u8fdb\u884c\u6392\u5e8f<\/strong>\uff0c\u6bcf\u6b21\u53d6\u51fa\u79bb\u5f53\u524d\u65f6\u95f4\u6700\u8fd1\u7684\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\u70b9\uff0c\u8ba1\u7b97\u51fa\u8d85\u65f6\u9700\u8981\u7b49\u5f85\u7684\u65f6\u95f4\uff0c\u7136\u540e\u7b49\u5f85\u8d85\u65f6\u3002\u8d85\u65f6\u65f6\u95f4\u5230\u540e\uff0c\u83b7\u53d6\u5f53\u524d\u7684\u7edd\u5bf9\u65f6\u95f4\u70b9\uff0c\u7136\u540e\u628a\u6700\u5c0f\u5806\u91cc\u8d85\u65f6\u65f6\u95f4\u70b9\u5c0f\u4e8e\u7b49\u4e8e\u8fd9\u4e2a\u65f6\u95f4\u70b9\u7684\u5b9a\u65f6\u5668\u90fd\u6536\u96c6\u8d77\u6765\uff0c\u6267\u884c\u56de\u8c03\u51fd\u6570\u3002<\/p>\n\n\n\n<p>\u4e3a\u4ec0\u4e48\u662f\u201c\u628a\u6700\u5c0f\u5806\u91cc\u8d85\u65f6\u65f6\u95f4\u70b9\u5c0f\u4e8e\u7b49\u4e8e\u8fd9\u4e2a\u65f6\u95f4\u70b9\u7684\u5b9a\u65f6\u5668\u90fd\u6536\u96c6\u8d77\u6765\u201c\uff0c\u96be\u9053\u4e0d\u662f\u53ea\u6709\u4e00\u4e2a\u5b9a\u65f6\u5668\u5230\u671f\u5417\uff1f\u56e0\u4e3a\u5f53\u65f6\u53ea\u201d\u53d6\u51fa\u79bb\u5f53\u524d\u65f6\u95f4\u6700\u8fd1\u7684\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\u70b9\u201c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5b9a\u65f6\u5668ID<\/th><th>\u8d85\u65f6\u65f6\u95f4\u70b9<\/th><\/tr><\/thead><tbody><tr><td>Timer A<\/td><td>1000ms<\/td><\/tr><tr><td>Timer B<\/td><td>1000ms<\/td><\/tr><tr><td>Timer C<\/td><td>1500ms<\/td><\/tr><tr><td>Timer D<\/td><td>2000ms<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p> \u4e3a\u4ec0\u4e48\u7b49\u5f85\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u6709\u591a\u4e2a\u5b9a\u65f6\u5668\u540c\u65f6\u5230\u671f\uff1f<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u591a\u4e2a\u5b9a\u65f6\u5668\u53ef\u80fd\u6709\u76f8\u540c\u7684\u8d85\u65f6\u65f6\u95f4<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u4f8b\u5982\u4e24\u4e2a\u5b9a\u65f6\u5668 <code>A<\/code> \u548c <code>B<\/code> \u90fd\u8bbe\u5b9a\u5728 <code>1000ms<\/code> \u8d85\u65f6 <\/li>\n\n\n\n<li>\u5f53 <code>tick<\/code> \u89e6\u53d1\u65f6\uff0c\u5b83\u4eec\u90fd\u5e94\u8be5\u540c\u65f6\u6267\u884c <\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u7ebf\u7a0b\u7684\u8c03\u5ea6\u5ef6\u8fdf<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u4f8b\u5982 <code>tick<\/code> \u9884\u8ba1\u5728 <code>1000ms<\/code> \u89e6\u53d1\uff0c\u4f46\u56e0\u4e3a\u67d0\u4e9b\u539f\u56e0\uff08\u6bd4\u5982\u7cfb\u7edf\u8c03\u5ea6\u6216\u8d1f\u8f7d\u9ad8\uff09\uff0c\u5b9e\u9645\u4ee3\u7801\u8fd0\u884c\u65f6\u5df2\u7ecf\u5230\u4e86 <code>1020ms<\/code> <\/li>\n\n\n\n<li>\u6b64\u65f6\uff0c\u6240\u6709\u8d85\u65f6\u65f6\u95f4 \u2264 <code>1020ms<\/code> \u7684\u5b9a\u65f6\u5668\u90fd\u5e94\u8be5\u6267\u884c\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f <code>1000ms<\/code> \u7684\u90a3\u4e2a <\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u5047\u8bbe\u5f53\u524d\u65f6\u95f4 <code>t=900ms<\/code>\uff0ctick \u89e6\u53d1\u540e\uff0c\u8ba1\u7b97\u51fa <code>100ms<\/code> \u540e\u5e94\u8be5\u8d85\u65f6\uff0c\u4e8e\u662f\u7ebf\u7a0b <code>sleep(100ms)<\/code><\/p>\n\n\n\n<p>\u5728 <code>t=1000ms<\/code> \u65f6\uff0c\u8d85\u65f6\u89e6\u53d1\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u53d6\u51fa <code>1000ms<\/code> \u8fd9\u4e2a\u6700\u5c0f\u7684\u8d85\u65f6\u65f6\u95f4\u70b9 <\/li>\n\n\n\n<li>\u68c0\u67e5\u6240\u6709\u5c0f\u4e8e\u7b49\u4e8e <code>1000ms<\/code> \u7684\u5b9a\u65f6\u5668\uff08\u5373 <code>A<\/code> \u548c <code>B<\/code>\uff09\uff0c\u5b83\u4eec\u90fd\u5df2\u7ecf\u5230\u671f<\/li>\n\n\n\n<li>\u6267\u884c <code>A<\/code> \u548c <code>B<\/code> \u7684\u56de\u8c03\u51fd\u6570 <\/li>\n\n\n\n<li>\u53d6\u6700\u5c0f\u5806\u5269\u4e0b\u7684\u4e0b\u4e00\u4e2a\u6700\u5c0f\u65f6\u95f4\u70b9 <code>1500ms<\/code> \u4f5c\u4e3a\u65b0\u7684 tick \u76ee\u6807 <\/li>\n<\/ol>\n\n\n\n<p>\u6240\u4ee5\uff0c\u4e0d\u4e00\u5b9a\u53ea\u6709\u4e00\u4e2a\u5b9a\u65f6\u5668\u5230\u671f\uff0c\u800c\u662f\u6240\u6709\u8d85\u65f6\u7684\u5b9a\u65f6\u5668\u90fd\u5e94\u8be5\u6267\u884c\u3002<\/p>\n\n\n\n<p>\u5728<strong>\u6ce8\u518c\u5b9a\u65f6\u4e8b\u4ef6<\/strong>\u65f6\uff0c\u4e00\u822c\u63d0\u4f9b\u7684\u662f<strong>\u76f8\u5bf9\u65f6\u95f4<\/strong>\uff0c\u6bd4\u5982\u76f8\u5bf9\u5f53\u524d\u65f6\u95f4 3s \u540e\u6267\u884c\u3002\u9700\u8981<strong>\u6839\u636e\u4f20\u5165\u7684\u76f8\u5bf9\u65f6\u95f4\u548c\u5f53\u524d\u7684\u7edd\u5bf9\u65f6\u95f4\u8ba1\u7b97\u51fa\u5b9a\u65f6\u5668\u8d85\u65f6\u7684\u7edd\u5bf9\u65f6\u95f4\u70b9<\/strong>\uff0c\u7136\u540e\u6839\u636e\u8fd9\u4e2a\u7edd\u5bf9\u65f6\u95f4\u70b9\u5bf9\u5b9a\u65f6\u5668\u8fdb\u884c\u6392\u5e8f\u3002\u56e0\u4e3a\u4f9d\u8d56\u7684\u662f\u7cfb\u7edf\u7edd\u5bf9\u65f6\u95f4\uff0c\u6240\u4ee5\u9700\u8981\u8003\u8651\u6821\u65f6\u7684\u56e0\u7d20\u3002<\/p>\n\n\n\n<p><br><strong>\u5b9a\u65f6\u5668\u7684\u8d85\u65f6\u7b49\u5f85\u57fa\u4e8e <code>epoll_wait<\/code><\/strong>\uff0c\u7cbe\u5ea6\u4e3a\u6beb\u79d2\u7ea7\uff08\u56e0\u4e3a <code>epoll_wait<\/code> \u7684\u8d85\u65f6\u7cbe\u5ea6\u4e5f\u53ea\u6709\u6beb\u79d2\u7ea7\uff09\u3002IO \u534f\u7a0b\u8c03\u5ea6\u5668\u4f1a\u5728\u8c03\u5ea6\u7684\u7a7a\u95f2\u65f6\u963b\u585e\u5728 <code>epoll_wait<\/code> \u4e0a\uff0c\u7b49\u5f85 IO \u4e8b\u4ef6\u53d1\u751f\u3002\u539f\u751f <code>epoll_wait<\/code> \u5177\u6709\u56fa\u5b9a\u7684\u8d85\u65f6\u65f6\u95f4\uff085s\uff09\uff0c\u52a0\u5165\u5b9a\u65f6\u5668\u7684\u529f\u80fd\u540e <code>epoll_wait<\/code> \u7684\u8d85\u65f6\u65f6\u95f4\u6539\u4e3a\u5f53\u524d\u5b9a\u65f6\u5668\u7684\u6700\u5c0f\u8d85\u65f6\u65f6\u95f4\u3002<code>epoll_wait<\/code> \u8fd4\u56de\u540e\uff0c\u6839\u636e\u5f53\u524d\u7684\u7edd\u5bf9\u65f6\u95f4\u628a\u5df2\u8d85\u65f6\u7684\u6240\u6709\u5b9a\u65f6\u5668\u6536\u96c6\u8d77\u6765\uff0c\u6267\u884c\u5b83\u4eec\u7684\u56de\u8c03\u51fd\u6570\u3002<\/p>\n\n\n\n<p><strong>\u90a3\u4e48 <code>epoll_wait<\/code> \u89e6\u53d1\u4e00\u5b9a\u662f\u8d85\u65f6\u4e86\u5417?<br><\/strong>\u7531\u4e8e <code>epoll_wait<\/code> \u7684\u8fd4\u56de\u5e76\u4e0d\u4e00\u5b9a\u662f\u8d85\u65f6\u5f15\u8d77\u7684\uff0c\u4e5f\u53ef\u80fd\u662f IO \u4e8b\u4ef6\u5524\u9192\u7684\uff0c\u6240\u4ee5\u5728 <code>epoll_wait<\/code> \u8fd4\u56de\u65f6\u4e0d\u80fd\u60f3\u5f53\u7136\u7684\u4ee5\u4e3a\u662f\u5b9a\u65f6\u5668\u8d85\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u6bd4\u8f83\u5f53\u524d\u7684\u7edd\u5bf9\u65f6\u95f4\u548c\u5b9a\u65f6\u5668\u7684\u7edd\u5bf9\u65f6\u95f4\uff0c\u5c31\u53ef\u4ee5\u5224\u65ad\u51fa\u5b9a\u65f6\u5668\u5230\u5e95\u6709\u6ca1\u6709\u8d85\u65f6\u3002<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-light-green-cyan-color\">epoll_wait \u4e0d\u53ea\u8d1f\u8d23\u76d1\u542c I\/O \u4e8b\u4ef6\uff0c\u8fd8\u8d1f\u8d23\u76d1\u542c\u7b49\u5f85\u5b9a\u65f6\u5668\u3002<\/mark><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5173\u952e\u51fd\u6570<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/**\n * \u5c06\u4e00\u4e2a\u65b0\u5b9a\u65f6\u5668\uff0c\u6dfb\u52a0\u5230\u5b9a\u65f6\u5668\u7ba1\u7406\u5668\u4e2d\uff0c\u5e76\u5728\u5fc5\u8981\u65f6\u5524\u9192\u7ebf\u7a0b\n * \u8be6\u7ec6\u6765\u8bf4\uff1aepoll_wait \u4e0d\u53ea\u8d1f\u8d23\u76d1\u542c I\/O \u4e8b\u4ef6\uff0c\u8fd8\u8d1f\u8d23\u7b49\u5f85\u5b9a\u65f6\u5668 \n * epoll_wait \u662f\u201c\u5e26\u8d85\u65f6\u963b\u585e\u201d\u7684\uff0c\u5e76\u4e14\u662f\u6309\u6700\u65e9\u8d85\u65f6\u5b9a\u65f6\u5668\u8bbe\u7f6e\u7684 timeout\uff0c\u5982\u679c\u4f60\u52a0\u5165\u4e86\u4e00\u4e2a\u66f4\u65e9\u7684\u5b9a\u65f6\u5668\uff0c\n * \u5fc5\u987b\u5524\u9192 epoll_wait\uff0c\u91cd\u65b0\u8bbe\u7f6e\u5b83\u7684 timeout\uff0c\u5426\u5219\u4f1a\u9519\u8fc7\u5b9a\u65f6\u5668\u7684\u89e6\u53d1\u65f6\u673a \n *\/\nstd::shared_ptr&lt;Timer&gt; TimerManager::addTimer(uint64_t ms, std::function&lt;void()&gt; cb, bool recurring) \n{\n    std::shared_ptr&lt;Timer&gt; timer(new Timer(ms, cb, recurring, this));\n    addTimer(timer);\n    return timer;\n}\nvoid TimerManager::addTimer(std::shared_ptr&lt;Timer&gt; timer)\n{\n    bool at_front = false;\n    {\n        std::unique_lock&lt;std::shared_mutex&gt; write_lock(m_mutex); \/\/ \u72ec\u5360\u5199\u9501\n\n        \/\/ std::pair&lt;iterator, bool&gt; insert(const value_type&amp; val);\n        \/\/ insert \u8fd4\u56de\u503c\u4e3a pair\uff0c\u53d6 first \u662f\u4e3a\u4e86\u83b7\u53d6\u8fed\u4ee3\u5668\n        auto it = m_timers.insert(timer).first;\n\n        \/\/ \u68c0\u67e5\u65b0\u63d2\u5165\u7684\u5b9a\u65f6\u5668\u662f\u5426\u6392\u5728\u6700\u524d\u9762\uff08\u5373\u4e0b\u4e00\u4e2a\u8981\u89e6\u53d1\u7684\u5b9a\u65f6\u5668\uff09\n        at_front = (it == m_timers.begin()) &amp;&amp; !m_tickled;\n        \n        \/\/ \u5982\u679c\u6392\u5728\u6700\u524d\u9762\uff0c\u5e76\u4e14\u6ca1\u6709\u5524\u9192\u8fc7\u8c03\u5ea6\u7ebf\u7a0b\n        if(at_front)\n        {\n            m_tickled = true; \/\/ \u6807\u8bb0\u5df2\u7ecf\u89e6\u53d1\u8fc7\u5524\u9192\uff0c\u907f\u514d\u91cd\u590d\u5524\u9192\uff0c\u63d0\u9ad8\u6027\u80fd\n        }\n    }\n   \n    if(at_front)\n    {\n        \/\/ \u5524\u9192 epoll_wait \u6216 IO \u8c03\u5ea6\u5668\u4e2d\u7684\u7ebf\u7a0b\n        onTimerInsertedAtFront();\n    }\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u8bfb\u5199\u9501\u5b9e\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u53d6\u6d88\u4e00\u4e2a\u5b9a\u65f6\u5668\uff0c\u5220\u9664\u8be5\u5b9a\u65f6\u5668\u7684\u56de\u8c03\u51fd\u6570\u5e76\u5c06\u5176\u4ece\u5b9a\u65f6\u5668\u5806\u4e2d\u79fb\u9664\nbool Timer::cancel() \n{\n\/**\n * std::shared_mutex \u662f C++17 \u5f15\u5165\u7684\u4e00\u79cd\u8bfb\u5199\u9501\uff0c\u652f\u6301\uff1a\n *      1.\u5171\u4eab\u9501\uff08std::shared_lock\uff09\uff1a\u591a\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u540c\u65f6\u8bfb\u53d6\uff0c\u4f46\u4e0d\u80fd\u5199\u5165 \n *      2.\u72ec\u5360\u9501\uff08std::unique_lock\uff09\uff1a\u53ea\u80fd\u6709\u4e00\u4e2a\u7ebf\u7a0b\u5199\u5165\uff0c\u5176\u4ed6\u7ebf\u7a0b\u5fc5\u987b\u7b49\u5f85 \n * unique_lock \/ shared_lock \/ lock_guard \u90fd\u662f\u6807\u51c6\u5e93\u63d0\u4f9b\u7684\u4e92\u65a5\u9501 RAII \u5c01\u88c5\u5de5\u5177\n *      unique_lock \u7528\u4e8e\u83b7\u53d6 shared_mutex \u7684\u5199\u9501\uff0c\u5b83\u4f1a\u72ec\u5360 shared_mutex\uff0c\u8ba9\u5f53\u524d\u7ebf\u7a0b\u83b7\u5f97\u5199\u6743\u9650\uff0c\u5176\u4ed6\u7ebf\u7a0b\u65e0\u6cd5\u540c\u65f6\u5199\u5165 \n *      shared_lock \u7528\u4e8e\u83b7\u53d6 shared_mutex \u7684\u8bfb\u9501\uff0c\u5b83\u4f1a\u5171\u4eab shared_mutex\uff0c\u8ba9\u591a\u4e2a\u7ebf\u7a0b\u83b7\u5f97\u8bfb\u6743\u9650\uff0c\u652f\u6301\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8bfb\u53d6\n *      \u76f8\u6bd4\u4e8e lock_guard\uff0cunique_lock \u66f4\u7075\u6d3b\uff0c\u652f\u6301\u624b\u52a8\u89e3\u9501  \n *\/\n    \n    \/\/ m_manager-&gt;m_mutex \u662f shared_mutex \u7c7b\u578b\uff0c\u652f\u6301\u8bfb\u5199\u9501\uff08\u5171\u4eab\u9501\u548c\u72ec\u5360\u9501\uff09\n    \/\/ \u4f7f\u7528 unique_lock \u83b7\u53d6 m_manager-&gt;m_mutex \u7684\u72ec\u5360\u5199\u9501\uff0c\u786e\u4fdd\u5f53\u524d\u7ebf\u7a0b\u53ef\u4ee5\u72ec\u5360\u8bbf\u95ee m_manager \u4fdd\u62a4\u7684\u8d44\u6e90\uff0c\u800c\u5176\u4ed6\u7ebf\u7a0b\u5fc5\u987b\u7b49\u5f85\n    std::unique_lock&lt;std::shared_mutex&gt; write_lock(m_manager-&gt;m_mutex); \/\/ \u5199\u9501\u4e92\u65a5\u9501\n\n    if(m_cb == nullptr) \n    {\n        return false;\n    }\n    else\n    {\n        m_cb = nullptr; \/\/ \u5c06\u56de\u8c03\u51fd\u6570\u8bbe\u7f6e\u4e3a nullptr\n    }\n\n    auto it = m_manager-&gt;m_timers.find(shared_from_this()); \/\/ \u4ece\u5b9a\u65f6\u7ba1\u7406\u5668\u4e2d\u627e\u5230\u9700\u8981\u5220\u9664\u7684\u5b9a\u65f6\u5668\n    if(it != m_manager-&gt;m_timers.end())\n    {\n        m_manager-&gt;m_timers.erase(it); \/\/ \u5220\u9664\u8be5\u5b9a\u65f6\u5668\n    }\n    return true;\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">ioscheduler <\/h2>\n\n\n\n<p>IO \u534f\u7a0b\u8c03\u5ea6\u5668\u662f\u7ee7\u627f\u524d\u9762\u7684\u534f\u7a0b\u534f\u7a0b\u8c03\u5ea6\u5668\u5b9e\u73b0\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u770b\u6210\u662f\u589e\u5f3a\u7248\u7684\u534f\u7a0b\u8c03\u5ea6\u3002IO \u534f\u7a0b\u8c03\u5ea6\u652f\u6301\u4e3a\u5957\u63a5\u5b57\u6587\u4ef6\u63cf\u8ff0\u7b26\u6ce8\u518c\u53ef\u8bfb\u548c\u53ef\u5199\u4e8b\u4ef6\uff0c\u5f53\u76d1\u542c\u5230 fd \u6ce8\u518c\u7684\u4e8b\u4ef6\u89e6\u53d1\u65f6\uff0c\u6267\u884c\u5bf9\u5e94\u7684\u56de\u8c03\u51fd\u6570\uff08\u6b63\u5982\u4e4b\u524d\u63d0\u5230\u7684\uff0c\u56de\u8c03\u51fd\u6570\u4f1a\u88ab\u5305\u88c5\u4e3a\u534f\u7a0b\uff09\u3002<\/p>\n\n\n\n<p>ioscheduler \u57fa\u4e8e epoll \u5b9e\u73b0\uff0c\u53ea\u652f\u6301 linux \u5e73\u53f0\u3002\u5bf9\u4e8e\u6bcf\u4e2a fd\uff0c\u652f\u6301 <code>EPOLLIN<\/code> \u53ef\u8bfb\u4e8b\u4ef6\u548c <code>EPOLLOUT<\/code> \u53ef\u5199\u4e8b\u4ef6\u4e24\u7c7b\u4e8b\u4ef6\uff0c\u5e76\u5c06 epoll \u652f\u6301\u7684\u5176\u4ed6\u4e8b\u4ef6\uff0c\u6bd4\u5982 <code>EPOLLRDHUP<\/code>\uff08\u5bf9\u7aef\u5173\u95ed\u8fde\u63a5\uff09\uff0c<code>EPOLLERR<\/code>\uff08\u9519\u8bef\u4e8b\u4ef6\uff09\uff0c<code>EPOLLHUP<\/code>\uff08\u6302\u8d77\u4e8b\u4ef6\uff09\u5f52\u7c7b\u5230 <code>EPOLLIN<\/code> \u548c <code>EPOLLOUT<\/code> \u4e2d\uff0c\u4e5f\u5c31\u662f\u6240\u6709\u7684\u4e8b\u4ef6\u90fd\u53ef\u4ee5\u8868\u793a\u4e3a\u53ef\u8bfb\u6216\u53ef\u5199\u4e8b\u4ef6\uff0c\u751a\u81f3\u6709\u7684\u4e8b\u4ef6\u8fd8\u53ef\u4ee5\u540c\u65f6\u8868\u793a\u53ef\u8bfb\u548c\u53ef\u5199\uff08\u6bd4\u5982 <code>EPOLLERR<\/code> \u4e8b\u4ef6\uff09\u3002<\/p>\n\n\n\n<p>IO \u534f\u7a0b\u8c03\u5ea6\u4e3a\u4ec0\u4e48\u90fd\u5305\u542b\u4e00\u4e2a\u4e09\u5143\u7ec4\u4fe1\u606f\uff1f<\/p>\n\n\n\n<p>\u5bf9\u4e8e IO \u534f\u7a0b\u8c03\u5ea6\uff0c<strong>\u6bcf\u6b21\u8c03\u5ea6\u90fd\u5305\u542b\u4e00\u4e2a\u4e09\u5143\u7ec4\u4fe1\u606f\uff0c\u5206\u522b\u662f\u6587\u4ef6\u63cf\u8ff0\u7b26\u3001\u4e8b\u4ef6\u7c7b\u578b\u548c\u56de\u8c03\u51fd\u6570<\/strong>\uff0c\u5176\u4e2d fd \u548c\u4e8b\u4ef6\u7c7b\u578b\u7528\u4e8e <code>epoll_wait<\/code>\uff0c\u56de\u8c03\u51fd\u6570\u7528\u4e8e\u534f\u7a0b\u8c03\u5ea6\u3002\u4e09\u5143\u7ec4\u4fe1\u606f\u901a\u8fc7 Fdcontext \u7ed3\u6784\u4f53\u6765\u5b58\u50a8\uff0c\u5728\u6267\u884c <code>epoll_wait<\/code> \u65f6\u901a\u8fc7 <code>epoll_event<\/code> \u7684\u79c1\u6709\u6570\u636e\u6307\u9488 <code>data.ptr<\/code> \u6765\u4fdd\u5b58 Fdcontext \u7684\u7ed3\u6784\u4f53\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>IO \u534f\u7a0b\u8c03\u5ea6\u5668\u5728 idle \u65f6\u4f1a <code>epoll_wait<\/code> \u6240\u6709\u6ce8\u518c\u7684 fd\uff0c\u5982\u679c\u6709 fd \u6ee1\u8db3\u6761\u4ef6\uff0c<code>epoll_wait<\/code> \u8fd4\u56de\uff0c\u4ece\u79c1\u6709\u6570\u636e\u4e2d\u62ff\u5230 fd \u7684\u4e0a\u4e0b\u6587\u4fe1\u606f\uff0c\u5e76\u4e14\u6267\u884c\u5176\u4e2d\u7684\u56de\u8c03\u51fd\u6570\uff08\u56de\u8c03\u51fd\u6570\u90fd\u4f1a\u88ab<strong>\u5c01\u88c5\u4e3a\u534f\u7a0b\u5bf9\u8c61<\/strong>\uff09(\u5b9e\u9645\u662f idle \u534f\u7a0b\u53ea\u8d1f\u8d23\u6536\u96c6\u6240\u6709\u5df2\u89e6\u53d1\u7684 fd \u7684\u56de\u8c03\u51fd\u6570\u5e76\u5c06\u5176\u52a0\u5165\u8c03\u5ea6\u5668\u7684\u4efb\u52a1\u961f\u5217\uff0c\u771f\u6b63\u7684\u6267\u884c\u65f6\u673a\u662f idle \u534f\u7a0b\u9000\u51fa\u540e\uff0c\u8c03\u5ea6\u5668\u5728\u4e0b\u4e00\u8f6e\u8c03\u5ea6\u65f6\u6267\u884c)\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8bfb\u5199\u9501\u5b9e\u4f8b<\/h3>\n\n\n\n<p>\u5982\u679c\u53ea\u662f\u8bbf\u95ee m_fdContexts \u6570\u7ec4\u5c31\u7528\u8bfb\u5199\u9501\u7684\u8bfb\u9501\u5373\u53ef\uff0c\u4f46\u662f\u5982\u679c\u8981\u4fee\u6539\u5171\u4eab\u8d44\u6e90\u6570\u7ec4\u7684\u5927\u5c0f\u5c31\u8981\u5148\u89e3\u8bfb\u9501\u518d\u52a0\u5199\u9501\u786e\u4fdd\u5bf9\u8d44\u6e90\u7684\u72ec\u7acb\u8bbf\u95ee\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    std::shared_mutex m_mutex; \/\/ \u8bfb\u5199\u9501\n    std::shared_lock&lt;std::shared_mutex&gt; read_lock(m_mutex); \/\/ \u89e6\u53d1\u8bfb\u5199\u9501\u7684\u8bfb\u9501\n    if((int)m_fdContexts.size() &gt; fd) \/\/ \u8bf4\u660e\u4f20\u5165\u7684 fd \u5728\u6570\u7ec4\u91cc\u9762\uff0c\u5c06\u5bf9\u5e94\u7684 FdContext \u8d4b\u503c\u7ed9 fd_ctx\n    {\n        fd_ctx = m_fdContexts&#91;fd];\n        read_lock.unlock();\n    }\n    else \/\/ \u6ca1\u5728\u6570\u7ec4\u91cc\u9762\uff0c\u5219\u91cd\u65b0\u5206\u914d\u6570\u7ec4\u7684 size \u6765\u521d\u59cb\u5316 FdContext \u7684\u5bf9\u8c61\n    {\n        read_lock.unlock();\n        std::unique_lock&lt;std::shared_mutex&gt; write_lock(m_mutex); \/\/ \u89e6\u53d1\u8bfb\u5199\u9501\u7684\u72ec\u5360\u5199\u9501\n        contextResize(fd * 1.5); \/\/ \u6269\u5bb9\n        fd_ctx = m_fdContexts&#91;fd]; \n    }<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">unique_ptr \u5b9e\u4f8b<\/h3>\n\n\n\n<p>\u5728 epoll \u4e8b\u4ef6\u5faa\u73af\u4e2d\uff0c<code>events<\/code> \u6570\u7ec4\u4ec5\u5728\u5f53\u524d\u4f5c\u7528\u57df\u5185\u4f7f\u7528\uff0c\u4e0d\u9700\u8981\u591a\u4e2a\u7ec4\u4ef6\u5171\u4eab\u8bbf\u95ee\u6743\uff0c\u56e0\u6b64\u4f7f\u7528unique_ptr\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    static const uint64_t MAX_EVNETS = 256; \/\/ \u5b9a\u4e49 epoll_wait \u80fd\u540c\u65f6\u5904\u7406\u7684\u6700\u5927\u4e8b\u4ef6\u6570 \n\n    \/\/ \u4f7f\u7528 std::unique_ptr \u52a8\u6001\u5206\u914d\u4e86\u4e00\u4e2a\u5927\u5c0f\u4e3a MAX_EVENTS \u7684 epoll_event \u6570\u7ec4\uff0c\u7528\u4e8e\u5b58\u50a8\u4ece epoll_wait \u83b7\u53d6\u7684\u4e8b\u4ef6\n    std::unique_ptr&lt;epoll_event&#91;]&gt; events(new epoll_event&#91;MAX_EVNETS]);<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">tickle \u51fd\u6570 <\/h3>\n\n\n\n<p><code>epoll_wait<\/code> \u9664\u4e86\u76d1\u542c IO \u4e8b\u4ef6\uff0c\u8fd8\u8981\u76d1\u542c\u5b9a\u65f6\u5668\u3002\u5982\u679c\u4e00\u76f4\u6ca1\u6709 IO \u4e8b\u4ef6\u53d1\u751f\uff0c\u8c03\u5ea6\u5668\u6240\u5728\u534f\u7a0b\u4f1a\u5728 <code>epoll_wait<\/code> \u4e0a\u4e00\u76f4\u963b\u585e\u7b49\u5f85 \uff0c\u5373\u4f7f\u5b9a\u65f6\u5668\u5230\u671f\u6216\u6709\u65b0\u4efb\u52a1\u52a0\u5165\u961f\u5217\uff0c\u4e5f\u65e0\u6cd5\u53ca\u65f6\u54cd\u5e94\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u73b0\u5728\u6709\u4e00\u4e2a 100ms \u7684\u5b9a\u65f6\u5668\uff0c\u5230\u671f\u540e\u5e94\u8be5\u7acb\u5373\u6062\u590d\u6267\u884c\uff0c\u800c\u4e0d\u662f\u7b49 <code>epoll_wait<\/code> \u81ea\u7136\u8d85\u65f6\uff08\u53ef\u80fd\u8fd8\u6709\u51e0\u79d2\uff09\u3002\u56e0\u6b64\uff0c<strong>tickle \u51fd\u6570\u7684\u4f5c\u7528\u662f\uff1a\u5728 <code>epoll_wait<\/code> \u963b\u585e\u671f\u95f4\uff0c\u7531\u4e8e\u5b9a\u65f6\u5668\u8d85\u65f6\u800c\u88ab\u89e6\u53d1\uff0c\u4ece\u800c\u5524\u9192\u8c03\u5ea6\u5668\u7acb\u5373\u5904\u7406\u5f85\u6267\u884c\u7684\u4efb\u52a1\u3002<\/strong><\/p>\n\n\n\n<p>\u901a\u8fc7\u5199\u5165\u4e00\u4e2a\u5b57\u7b26\u5230\u5199\u7ba1\u9053 mtickleFds[1] \u4e2d\uff0c\u5f3a\u5236 <code>epoll_wait<\/code> \u8fd4\u56de\uff0c\u5524\u9192\u8c03\u5ea6\u5668\uff0c\u4f7f\u5176\u7acb\u5373\u68c0\u67e5\u4efb\u52a1\u961f\u5217\u5e76\u6267\u884c\u5f85\u5904\u7406\u4efb\u52a1\u3002\u82e5\u6ca1\u6709 tickle\uff0c\u8c03\u5ea6\u5668\u53ef\u80fd\u56e0\u672a\u611f\u77e5\u5230\u65b0\u4efb\u52a1\u800c\u6301\u7eed\u7a7a\u8f6c\u3002<strong>\u672c\u8d28\u662f\u8c03\u5ea6\u5668\u7684\u4fe1\u53f7\u673a\u5236\uff0c\u5176\u4f5c\u7528\u7c7b\u4f3c\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u7684\u201c\u4e2d\u65ad\u201d\u3002<\/strong><\/p>\n\n\n\n<p><strong>\u5f53\u5b9a\u65f6\u5668\u88ab\u63d2\u5165\u5230\u6700\u5c0f\u5806\u7684\u6700\u524d\u9762\u65f6\uff0c\u89e6\u53d1 tickle \u4e8b\u4ef6<\/strong>\uff0c\u5524\u9192\u963b\u585e\u7684 epoll_wait \uff0c\u56de\u6536\u8d85\u65f6\u7684\u5b9a\u65f6\u4efb\u52a1\uff08\u56de\u8c03\u51fd\u6570\u548c\u534f\u7a0b\uff09\u5e76\u653e\u5165\u534f\u7a0b\u8c03\u5ea6\u5668\u4e2d\u7b49\u5f85\u8c03\u5ea6\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">idle \u51fd\u6570<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u9996\u5148\u5b9a\u4e49 <code>epoll_wait<\/code> \u80fd\u540c\u65f6\u5904\u7406\u7684\u6700\u5927\u4e8b\u4ef6\u6570\u4e3a 256 \u4e2a\uff0c\u7136\u540e\u4f7f\u7528 <code>std::unique_ptr events(new epoll_event[MAX_EVNETS])<\/code> \u52a8\u6001\u5206\u914d\u4e00\u5757\u5b58\u50a8<code> epoll_event<\/code> \u7c7b\u578b\u6570\u636e\u7684\u5185\u5b58\u3002<\/li>\n\n\n\n<li>\u6240\u6709\u7684\u6b65\u9aa4\u90fd\u5728\u4e00\u4e2a\u5927\u7684 <code>while<\/code> \u5faa\u73af\u4e2d\uff0c\u5148\u68c0\u67fb\u6709\u65e0 <code>debug<\/code> \u6216\u8005 <code>stopping<\/code> \u7ec8\u6b62\u7684\u60c5\u51b5\uff0c\u5982\u679c\u6ca1\u6709\u5c31\u518d\u8bbe\u7acb\u4e00\u4e2a <code>while<\/code> \u5faa\u73af\u8fdb\u884c <code>epoll_wait<\/code> \u7684\u963b\u585e\uff0c\u7b49\u5f85 <strong>fd \u8bfb\u5199\u4e8b\u4ef6\u7684\u54cd\u5e94<\/strong>\u6216\u8005<strong>\u8d85\u65f6\u5b9a\u65f6\u5668\u8d85\u65f6<\/strong>\u6216\u8005<strong>\u6709\u65b0\u7684\u5b9a\u65f6\u5668\u63d2\u5165\u5230\u6700\u5c0f\u65f6\u95f4\u5806\u7684\u5806\u9876\u4ece\u800c\u89e6\u53d1 <code>tickle<\/code> \u4fe1\u53f7<\/strong>\u3002\u6ce8\u610f\uff1a\u8fd9\u91cc\u7684 <code>epoll_wait<\/code> \u7684\u8d85\u65f6\u65f6\u95f4\u53d6\u7684\u662f <code>epoll_wait<\/code> \u539f\u751f\u8d85\u65f6\u65f6\u95f4 5000ms \u548c\u65f6\u95f4\u5806\u4e2d\u7684\u5806\u9876\u5b9a\u65f6\u5668\u8d85\u65f6\u65f6\u95f4\u7684\u8f83\u5c0f\u503c\u3002<\/li>\n\n\n\n<li>\u5f53 <code>epoll_wait<\/code> \u4ece\u963b\u585e\u4e2d\u88ab\u89e6\u53d1\u65f6\uff0c\u8981\u4e48\u56e0\u4e3a\u8d85\u65f6\u89e6\u53d1\uff0c\u8981\u4e48\u6ce8\u518c\u7684 fd \u6709\u54cd\u5e94\u7684\u4e8b\u4ef6\u53d1\u751f\u3002\u9996\u5148\u901a\u8fc7 <code>listExpiredCb(cbs)<\/code> \u83b7\u53d6\u6240\u6709\u8d85\u8fc7\u5b9a\u65f6\u5668\u7684\u56de\u8c03\u51fd\u6570\uff0c\u5e76\u9010\u4e2a\u5305\u88c5\u6dfb\u52a0\u5230\u534f\u7a0b\u8c03\u5ea6\u7684\u4efb\u52a1\u961f\u5217\u4e2d\u3002<\/li>\n\n\n\n<li>\u5904\u7406\u5b8c\u5b9a\u65f6\u5668\uff0c\u518d\u5904\u7406 fd \u7684\u54cd\u5e94\u4e8b\u4ef6\u3002\u904d\u5386 <code>epoll_wait<\/code> \u8fd4\u56de\u7684\u4e8b\u4ef6\u6570\u7ec4\uff0c\u83b7\u53d6\u4e00\u4e2a\u4e2a\u51c6\u5907\u597d\u7684 event\u3002\u7531\u4e8e tickle \u51fd\u6570\u4f1a\u5411\u7ba1\u9053\u4e2d\u5199\u5165\u4ece\u800c\u5524\u9192 <code>epoll_wait<\/code> \uff0c\u56e0\u6b64\u8981\u5148 while \u5faa\u73af\u4e0d\u65ad\u8bfb\u6570\u636e\u76f4\u5230 read \u8fd4\u56de -1\u3002\u5176\u4ed6\u60c5\u51b5\u5c31\u6b63\u5e38\u4ece event \u4e2d\u627e\u5230\u5f53\u65f6\u5b58\u653e\u5728 event.data.ptr \u4e2d\u7684 fd_ctx\uff08\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e0a\u4e0b\u6587\uff09\u3002<\/li>\n\n\n\n<li>\u9700\u8981\u6ce8\u610f\u6211\u4eec\u53ea\u5b9a\u4e49\u4e86\u8bfb EPOLLIN \u548c\u5199 EPOLLOUT\uff0c\u5176\u4ed6\u4e8b\u4ef6\u90fd\u8981\u8f6c\u6362\u6210\u8fd9\u4e24\u4e2a\u3002\u63a5\u4e0b\u6765\u5224\u65ad fd_ctx->event \u771f\u5b9e\u7684\u4e8b\u4ef6\u662f\u4ec0\u4e48\uff0c\u8ba1\u7b97\u9664\u54cd\u5e94\u7684\u8be5\u4e8b\u4ef6\u5916\u5269\u4e0b\u7684\u4e8b\u4ef6\uff0c\u8c03\u7528 <code>epoll_ctl<\/code> \u4fee\u6539\u6216\u5220\u9664 <code>epoll<\/code> \u76d1\u542c\u4e8b\u4ef6\uff08\u5982\u679c\u6ca1\u5269\u4e0b\u4e8b\u4ef6\u5c31\u5220\u9664\uff0c\u53cd\u4e4b\u4fee\u6539\uff0c\u5373\u5220\u9664\u4e00\u4e2a\u4e8b\u4ef6\uff09\u3002\u6700\u540e\u8c03\u7528 <code>triggerEvent<\/code> \u51fd\u6570\u89e6\u53d1\u54cd\u5e94\u4e8b\u4ef6\u3002<\/li>\n\n\n\n<li><code>idle<\/code> \u4e3b\u52a8 <code>yield<\/code> \u8ba9\u51fa\u63a7\u5236\u6743\uff0c\u4f7f\u5f97\u4e3b\u7ebf\u7a0b\u4e5f\u53ef\u4ee5\u548c\u5176\u4ed6\u5de5\u4f5c\u7ebf\u7a0b\u4e00\u6837\u53bb\u6267\u884c\u4efb\u52a1\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">hook <\/h2>\n\n\n\n<p>hook \u7684\u6838\u5fc3\u601d\u60f3\u662f\uff1a<strong>\u5c06\u963b\u585e\u8c03\u7528\u62c6\u89e3\u4e3a\u201c\u6ce8\u518c\u4e8b\u4ef6 + \u4e3b\u52a8\u8ba9\u51fa\u201d<\/strong>\uff0c\u901a\u8fc7\u8c03\u5ea6\u5668\u5f02\u6b65\u5524\u9192\u3002<\/p>\n\n\n\n<p>\u7b80\u5355\u6765\u8bf4\uff0chook \u662f\u5bf9\u539f API \u7684\u540c\u540d\u5c01\u88c5\uff0c\u5728\u8c03\u7528\u8fd9\u4e2a\u63a5\u53e3\u65f6\uff0c\u9996\u5148\u8003\u8651\u6267\u884c\u6211\u4eec\u5c01\u88c5\u597d\u7684\u540c\u540d API\uff0c\u800c\u4e0d\u662f\u539f API\u3002<\/p>\n\n\n\n<p>\u5373\u94a9\u5b50\u7c7b\uff1a\u65e8\u5728\u62e6\u622a\u5e76\u91cd\u5b9a\u5411\u67d0\u4e9b\u7cfb\u7edf\u8c03\u7528\uff0c\u5982\u4e0e\u7f51\u7edc\u76f8\u5173\u7684 socket\u3001connect\u3001read\u3001write \u7b49\u51fd\u6570\u3002<\/p>\n\n\n\n<p>\u8fd9\u79cd\u6280\u672f\u901a\u5e38\u7528\u4e8e\u7f51\u7edc\u5e93\u3001\u5f02\u6b65 IO \u64cd\u4f5c\u6216\u534f\u7a0b\u5e93\u4e2d\uff0c\u4ee5\u4fbf\u5bf9\u5e95\u5c42\u7cfb\u7edf\u8c03\u7528\u8fdb\u884c\u81ea\u5b9a\u4e49\u5904\u7406\uff0c\u4ece\u800c\u5b9e\u73b0\u975e\u963b\u585e IO\u3001\u8d85\u65f6\u63a7\u5236\u6216\u5176\u4ed6\u529f\u80fd\u3002<\/p>\n\n\n\n<p>\u4e3e\u4e2a\u6817\u5b50\uff1a<br>\u4f7f\u7528\u534f\u7a0b\u8c03\u5ea6\u5668\u5904\u7406\u4e09\u4e2a\u4efb\u52a1\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u534f\u7a0b1\uff1asleep(2) \u7761\u7720 2s \u540e\u8fd4\u56de<\/li>\n\n\n\n<li>\u534f\u7a0b2\uff1a\u5728 socket fd1 \u4e0a send 100k \u6570\u636e<\/li>\n\n\n\n<li>\u534f\u7a0b3\uff1a\u5728 socket fd2 \u4e0a recv \u76f4\u5230\u6570\u636e\u63a5\u6536\u6210\u529f<\/li>\n<\/ul>\n\n\n\n<p>\u5982\u679c\u5728\u672a\u4f7f\u7528 hook \u7684\u60c5\u51b5\u4e0b\uff0cIO \u534f\u7a0b\u8c03\u5ea6\u5668\u7684\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5148\u6267\u884c\u534f\u7a0b1\uff0c\u8fd9\u6837\u56e0\u4e3a sleep \u7684\u963b\u585e\u8c03\u7528\u4f1a\u6682\u505c 2s\uff0c\u6b64\u65f6\u534f\u7a0b1\u88ab\u963b\u585e\u3002<\/li>\n\n\n\n<li>\u7b49\u5230 sleep \u7ed3\u675f\u540e\u534f\u7a0b1\u8ba9\u51fa\u63a7\u5236\u6743\uff0c\u6267\u884c\u534f\u7a0b2\uff0c\u8fd9\u91cc\u4f1a\u56e0\u4e3a send \u7b49\u4e0d\u5230\u8981\u53d1\u9001\u7684\u5199\u8d44\u6e90\u4e00\u6837\u9677\u5165\u963b\u585e\u3002<\/li>\n\n\n\n<li>\u7b49\u5230\u5199\u8d44\u6e90\u6765\u4e86\uff0c\u534f\u7a0b2\u624d\u4f1a\u8ba9\u51fa\u6267\u884c\u6743\u7ed9\u534f\u7a0b3\uff0c\u4f46\u662f\u6b64\u65f6\u53c8\u963b\u585e\u5728 recv \u7684\u8bfb\u4e0a\u3002<\/li>\n<\/ul>\n\n\n\n<p> \u6574\u4e2a\u8fc7\u7a0b\u53d8\u6210\u4e86\u4e00\u4e2a\u963b\u585e\u4e14\u540c\u6b65\u7684\u6846\u67b6\uff0c\u5b8c\u5168\u6ca1\u6709\u5b9e\u73b0\u975e\u963b\u585e\u534f\u7a0b\u7684\u5207\u6362\uff0c\u4e3a\u4ec0\u4e48?<\/p>\n\n\n\n<p>\u539f\u56e0\u5728\u4e8e\u5728\u5b50\u534f\u7a0b\u6267\u884c resume \u51fd\u6570\u7684\u65f6\u5019\u5148\u53bb\u6267\u884c sleep(2)\uff0c\u6267\u884c\u5b8c\u540e\u624d yield\uff0c\u90a3\u5c31\u9700\u8981\u963b\u585e\u5728\u8fd9\u4e2a\u534f\u7a0b\u7b49\u5f85 2s\u3002\u6b64\u65f6\u5176\u4ed6\u534f\u7a0b\u4e0d\u80fd\u5de5\u4f5c\uff0c\u53ea\u80fd\u7b49\u5230\u534f\u7a0b1\u6267\u884c\u5b8c\u8ba9\u51fa\u6267\u884c\u6743\u3002\u56e0\u6b64\uff0c\u6839\u672c\u539f\u56e0\u5c31\u662f <strong>sleep \u51fd\u6570\u5185\u90e8\u65e0\u6cd5 yield<\/strong>\uff0c\u56e0\u4e3a\u6ca1\u6709\u6539\u53d8\u51fd\u6570\u5185\u90e8\u7684\u6267\u884c\u903b\u8f91\uff0c\u51fd\u6570\u5185\u90e8\u4e0d\u80fd\u8fdb\u884c yield\uff0c\u6240\u4ee5\u53ea\u80fd\u4e00\u6b65\u6b65\u6267\u884c\u4e0b\u53bb\u4e86\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u4f7f\u7528 hook \u5c01\u88c5\uff0c\u66f4\u6539\u51fd\u6570\u5185\u90e8\u6267\u884c\u903b\u8f91\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u6bd4\u5982\u628a sleep(2) \u6539\u6210\u4e24\u4e2a\u52a8\u4f5c\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6ce8\u518c\u5b9a\u65f6\u5668\uff1a\u5411\u8c03\u5ea6\u5668\u63d2\u5165\u4e00\u4e2a2\u79d2\u540e\u89e6\u53d1\u7684\u56de\u8c03\u4efb\u52a1\u3002<\/li>\n\n\n\n<li>\u7acb\u5373\u8ba9\u51fa\u6267\u884c\u6743\uff1a\u5f53\u524d\u534f\u7a0b\u4e3b\u52a8 <code>yield<\/code>\uff0c\u8ba9\u8c03\u5ea6\u5668\u53bb\u6267\u884c\u5176\u4ed6\u4efb\u52a1\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4e24\u79d2\u540e\u5b9a\u65f6\u5668\u5230\u671f\u65f6\uff0c<code>epoll_wait<\/code> \u89e6\u53d1\uff0c\u8c03\u5ea6\u5668\u4f1a\u6062\u590d\u8be5\u534f\u7a0b\u7684\u6267\u884c\uff0c\u4ece\u800c\u201c\u6a21\u62df\u201d\u51fa <code>sleep(2)<\/code> \u7684\u6548\u679c\uff0c\u4f46\u5168\u7a0b\u65e0\u963b\u585e\u3002<\/p>\n\n\n\n<p>\u603b\u800c\u8a00\u4e4b\uff0c\u5728 IO \u534f\u7a0b\u8c03\u5ea6\u4e2d\u5bf9\u76f8\u5173\u7684\u7cfb\u7edf\u8c03\u7528\u8fdb\u884c hook \u5c01\u88c5\uff0c\u53ef\u4ee5\u8ba9\u8c03\u5ea6\u7ebf\u7a0b\u5c3d\u53ef\u80fd\u5f97\u628a\u65f6\u95f4\u7247\u82b1\u5728\u6709\u610f\u4e49\u7684\u64cd\u4f5c\u4e0a\uff0c\u800c\u4e0d\u662f\u6d6a\u8d39\u5728\u963b\u585e\u7b49\u5f85\u4e2d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">hook \u7684\u4e24\u79cd\u65b9\u5f0f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4fb5\u5165\u5f0f\uff1a\u76f4\u63a5\u6539\u9020\u4ee3\u7801\uff0c\u5c06\u76ee\u6807\u51fd\u6570\u7684\u5165\u53e3\u70b9\u66ff\u6362\u4e3a\u81ea\u5b9a\u4e49\u7684\u4ee3\u7801\uff0c\u4ece\u800c\u5728\u51fd\u6570\u6267\u884c\u4e4b\u524d\u6216\u4e4b\u540e\u6ce8\u5165\u81ea\u5b9a\u4e49\u7684\u903b\u8f91\u3002<\/li>\n\n\n\n<li>\u5916\u6302\u5f0f\uff08\u672c\u9879\u76ee\uff09\uff1a\u4e0d\u4fee\u6539\u76ee\u6807\u7a0b\u5e8f\u7684\u6e90\u4ee3\u7801\uff0c\u800c\u662f\u901a\u8fc7\u5916\u90e8\u52a8\u6001\u5e93\uff08<code>.so<\/code>\uff09\u5728\u8fd0\u884c\u65f6\u62e6\u622a\u5e76\u66ff\u6362\u76ee\u6807\u51fd\u6570\u3002\u901a\u8fc7\u4f18\u5148\u52a0\u8f7d\u81ea\u5b9a\u4e49\u7684\u52a8\u6001\u5e93\uff0c\u62e6\u622a\u5e76\u4fee\u6539\u540e\u9762\u7cfb\u7edf\u52a8\u6001\u5e93\u4e2d\u51fd\u6570\u7684\u884c\u4e3a\uff0c\u4ece\u800c\u5b9e\u73b0 hook \u6548\u679c\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e3e\u4e2a\u6817\u5b50\uff0c\u6bd4\u5982\u5bf9 write \u51fd\u6570\u8fdb\u884c\u5916\u6302\u5f0f hook \u6539\u9020\uff0c\u5c06\u81ea\u5b9a\u4e49\u7684 write \u51fd\u6570\u7f16\u8bd1\u6210 <code>libhook.so<\/code> \u52a8\u6001\u5e93\uff0c\u901a\u8fc7\u8bbe\u7f6e <code>LD_PRELOAD<\/code> \u73af\u5883\u53d8\u91cf\uff0c\u5c06 <code>libhook.so<\/code> \u8bbe\u7f6e\u6210\u4f18\u5148\u52a0\u8f7d\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>LD_PRELOAD=\".\/libhook.so\" .\/a.out<\/code><\/pre>\n\n\n\n<p><code>LD_PRELOAD<\/code> \u73af\u5883\u53d8\u91cf\uff0c\u5b83\u6307\u660e\u4e86\u5728\u8fd0\u884c <code>a.out<\/code> \u4e4b\u524d\uff0c\u7cfb\u7edf\u4f1a\u4f18\u5148\u628a <code>libhook.so<\/code> \u52a0\u8f7d\u5230\u7a0b\u5e8f\u7684\u8fdb\u7a0b\u7a7a\u95f4\uff0c\u4f7f\u5f97 <code>a.out<\/code> \u8fd0\u884c\u4e4b\u524d\uff0c\u5176\u5168\u5c40\u7b26\u53f7\u8868\u5c31\u5df2\u7ecf\u6709\u4e00\u4e2a write \u7b26\u53f7\uff0c\u8fd9\u6837\u5728\u540e\u7eed\u52a0\u8f7d libc \u5171\u4eab\u5e93\u65f6\uff0c\u7531\u4e8e\u5168\u5c40\u7b26\u53f7\u4ecb\u5165\u673a\u5236 libc \u4e2d\u7684 write \u7b26\u53f7\u4e0d\u4f1a\u518d\u88ab\u52a0\u5165\u5168\u5c40\u7b26\u53f7\u8868\uff0c\u6240\u4ee5\u5168\u5c40\u7b26\u53f7\u8868\u4e2d\u7684 write \u5c31\u53d8\u6210\u4e86\u6211\u4eec\u81ea\u5df1\u7684\u5b9e\u73b0\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e09\u7c7b\u9700\u8981 hook \u7684 API<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>sleep \u5ef6\u65f6\u63a5\u53e3\uff0c\u5305\u62ec sleep\u3001usleep\u3001nanosleep\u3002\u5bf9\u4e8e\u8fd9\u4e9b\u63a5\u53e3\u7684hook\uff0c\u53ea\u9700\u8981\u6ce8\u518c\u4e00\u4e2a\u5b9a\u65f6\u4e8b\u4ef6\uff0c\u7136\u540e yield \u8ba9\u51fa\u6267\u884c\u6743\uff0c\u5728\u5b9a\u65f6\u4e8b\u4ef6\u89e6\u53d1\u540e\u518d\u56de\u6765\u6267\u884c\u5f53\u524d\u534f\u7a0b\u5373\u53ef\u3002<\/li>\n\n\n\n<li>socket IO \u7cfb\u5217\u63a5\u53e3\uff0c\u5305\u62ec read\u3001write\u3001recv\u3001connect\u3001accept \u7b49\u3002\u8fd9\u7c7b\u63a5\u53e3\u7684 hook \u9996\u5148\u9700\u8981\u5224\u65ad\u64cd\u4f5c\u7684 fd \u662f\u5426\u4e3a scoket fd \uff0c\u4ee5\u53ca\u7528\u6237\u662f\u5426\u663e\u5f0f\u5730\u5bf9 fd \u8bbe\u7f6e\u4e86\u975e\u963b\u585e\u3002\u5982\u679c\u4e0d\u662f socket fd \u6216\u662f\u7528\u6237\u663e\u793a\u8bbe\u7f6e\u8fc7\u975e\u963b\u585e\u6a21\u5f0f\uff0c\u90a3\u4e48\u5c31\u4e0d\u9700\u8981\u4f7f\u7528 hook \u4e86\uff0c\u76f4\u63a5\u8c03\u7528\u539f\u59cb\u7cfb\u7edf\u8c03\u7528\u5373\u53ef\u3002\u5982\u679c\u9700\u8981 hook\uff0c\u90a3\u4e48\u9996\u5148\u8981\u6ce8\u518c\u5bf9\u5e94\u7684\u8bfb\u5199\u4e8b\u4ef6\uff0c\u7136\u540e yield \u8ba9\u51fa\u6267\u884c\u6743\u8ba9\u5176\u4ed6\u534f\u7a0b\u6267\u884c\uff0c\u7b49\u4e8b\u4ef6\u53d1\u751f\u540e\u518d\u7ee7\u7eed\u6267\u884c\u5f53\u524d\u534f\u7a0b\u3002<\/li>\n\n\n\n<li>socket\u3001fcntl\u3001ioctl\u3001close \u7b49\u63a5\u53e3\uff0c\u8fd9\u7c7b\u63a5\u53e3\u4e3b\u8981\u5904\u7406\u7684\u662f\u8fb9\u7f18\u60c5\u51b5\uff0c\u6bd4\u5982\u5206\u914d fd \u4e0a\u4e0b\u6587\uff0c\u5904\u7406\u8d85\u65f6\u53ca\u7528\u6237\u663e\u5f0f\u8bbe\u7f6e\u975e\u963b\u585e\u95ee\u9898\u3002\u8fd9\u91cc\u9700\u8981\u63d0\u524d\u5b9e\u73b0 FdCtx \u548c FdManager \u4e24\u4e2a\u7c7b\uff0c\u524d\u8005\u7528\u4e8e\u7ba1\u7406\u4e0e fd \u76f8\u5173\u7684\u72b6\u6001\u548c\u64cd\u4f5c\uff08\u6bd4\u5982\u8bb0\u5f55 fd \u7684\u8bfb\u5199\u4e8b\u4ef6\u8d85\u65f6\u65f6\u95f4\u548c\u975e\u963b\u585e\u4fe1\u606f\uff0c\u975e\u963b\u585e\u4fe1\u606f\u5305\u62ec\u7528\u6237\u663e\u5f0f\u8bbe\u7f6e\u7684\u975e\u963b\u585e\u548c hook \u5185\u90e8\u8bbe\u7f6e\u7684\u975e\u963b\u585e\uff09\uff0c\u540e\u8005\u7528\u4e8e\u7ba1\u7406 FdCtx \u5bf9\u8c61\u7684\u96c6\u5408\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u4e09\u7c7b hook \u903b\u8f91\uff0c\u6838\u5fc3\u76ee\u7684\u90fd\u662f\uff1a<strong>\u5224\u65ad\u662f\u5426\u5e94\u8be5\u7531 IO \u534f\u7a0b\u8c03\u5ea6\u5668\u63a5\u7ba1\u7cfb\u7edf\u8c03\u7528\uff0c\u82e5\u63a5\u7ba1\u5219\u901a\u8fc7 epoll + \u534f\u7a0b\u8c03\u5ea6\u5b9e\u73b0\u975e\u963b\u585e\u903b\u8f91\uff0c\u5426\u5219\u5c31\u76f4\u63a5\u8c03\u7528\u539f\u59cb\u7cfb\u7edf\u8c03\u7528\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5982\u4f55\u5b9e\u73b0 hook <\/h3>\n\n\n\n<p>C \u51fd\u6570\u539f\u578b\u58f0\u660e\u4e0e\u91cd\u5b9a\u5411\uff0c\u4e3e\u4e2a\u6817\u5b50\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>typedef unsigned int (*sleep_fun) (unsigned int seconds); \/\/ \u5b9a\u4e49\u4e86\u4e00\u4e2a\u8fd4\u56de\u503c\u662f unsigned int\uff0c\u53c2\u6570\u7c7b\u578b\u662f unsigned int \u7684\u51fd\u6570\u6307\u9488\nextern sleep_fun sleep_f; \/\/ \u58f0\u660e\u4e86\u4e00\u4e2a\u5916\u90e8\u53d8\u91cf\uff0c\u7c7b\u578b\u662f sleep fun\uff0c\u53d8\u91cf\u540d\u4e3a sleep_f\n\nsleep_fun sleep_f = sleep;\/\/ \u5c06 sleep_f \u6307\u5411 sleep \u51fd\u6570\uff0c\u540e\u9762\u6211\u4eec\u53ef\u4ee5\u628a sleep \u6539\u4e3a\u6211\u4eec\u81ea\u5b9a\u4e49\u7684\u51fd\u6570\n\/\/ \u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7 sleep \u8c03\u7528\u8be5\u51fd\u6570\nunsigned int result = sleep_f(5); \/\/ \u7b49\u4ef7\u4e8e\u8c03\u7528 sleep(5)<\/code><\/pre>\n\n\n\n<p>\u5b8f <code>HOOK_FUN(XX)<\/code> \u662f\u4e00\u4e2a\u5b8f\u5c55\u5f00\u673a\u5236\uff0c\u901a\u8fc7\u5c06 XX \u4f9d\u6b21\u5e94\u7528\u4e8e\u5b8f\u5b9a\u4e49\u4e2d\u7684\u6bcf\u4e00\u4e2a\u51fd\u6570\u540d\u79f0\u6765\u751f\u6210\u4e00\u7cfb\u5217\u76f8\u4f3c\u4ee3\u7801\uff0c\u53ef\u4ee5\u6709\u6548\u51cf\u5c11\u91cd\u590d\u4ee3\u7801\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u7ef4\u62a4\u6027\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#define HOOK_FUN(XX) \\\n    XX(sleep) \\\n    XX(usleep) \\\n    XX(nanosleep) \\\n    XX(socket) \\\n    XX(connect) \\\n    XX(accept) \\\n    ```\n#define XX(name) name##_f = (name##_fun)dlsym(RTLD_NEXT, #name);\nHOOK_FUN(XX)\n#undef xx \/\/\u63d0\u524d\u53d6\u6d88 xx \u7684\u4f5c\u7528\u57df<\/code><\/pre>\n\n\n\n<p>\u7b26\u53f7\u89e3\u91ca\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>name##_f<\/code>\uff1a\u5c06 <code>name<\/code> \u548c <code>_f<\/code> \u62fc\u63a5\uff0c\u751f\u6210\u53d8\u91cf\u540d\uff0c\u6bd4\u5982 <code>sleep_f<\/code><\/li>\n\n\n\n<li><code>(name##_fun)<\/code>\uff1a\u751f\u6210\u51fd\u6570\u6307\u9488\u7c7b\u578b\uff0c\u6bd4\u5982 <code>sleep_fun<\/code><\/li>\n\n\n\n<li><code>#name<\/code>\uff1a\u628a name \u53d8\u6210\u5b57\u7b26\u4e32\u5e38\u91cf\uff0c\u6bd4\u5982 <code>\"sleep\"<\/code><\/li>\n\n\n\n<li><code>dlsym(RTLD_NEXT, #name)<\/code>\uff1a\u83b7\u53d6\u7cfb\u7edf\u4e2d\u4e0b\u4e00\u5c42\u7684\u539f\u59cb\u51fd\u6570\u5730\u5740<\/li>\n\n\n\n<li><code>RTLD_NEXT<\/code>\uff1a\u662f\u4e00\u4e2a <code>dlsym<\/code> \u7684\u7279\u6b8a\u53e5\u67c4\uff0c\u8868\u793a\u201c\u83b7\u53d6\u4e0b\u4e00\u4e2a\u540c\u540d\u7b26\u53f7\u201d\uff0c\u7528\u4e8e hook \u573a\u666f<\/li>\n<\/ul>\n\n\n\n<p>\u4e3e\u4e2a\u6817\u5b50\uff1a\u5c06 sleep\u3001usleep\u3001nanosleep \u7b49\u4f5c\u4e3a name \u4f20\u5165 <code>XX(name)<\/code> \u5b8f\uff0c\u5c31\u4f1a\u5c55\u5f00\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sleep_f = (sleep_fun)dlsym(RTLD_NEXT, \"sleep\");\nusleep_f = (usleep_fun)dlsym(RTLD_NEXT, \"usleep\");\nnanosleep_f = (nanosleep_fun)dlsym(RTLD_NEXT, \"nanosleep\");\nsocket_f = (socket_fun)dlsym(RTLD_NEXT, \"socket\");<\/code><\/pre>\n\n\n\n<p><code>dlsym<\/code> \u662f Linux \u63d0\u4f9b\u7684\u4e00\u4e2a API\uff0c\u7528\u4e8e\u5728\u8fd0\u884c\u65f6\u83b7\u53d6\u52a8\u6001\u94fe\u63a5\u5e93\u4e2d\u7684\u7b26\u53f7\u5730\u5740\u3002<code>RTLD_NEXT<\/code> \u7684\u4f5c\u7528\u662f\u83b7\u53d6\u4e0b\u4e00\u4e2a\u5b9a\u4e49\uff0c\u5373\u7ed5\u8fc7\u81ea\u5b9a\u4e49 hook \u6539\u9020\u7684\u51fd\u6570\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a\u6211\u4eec\u4f7f\u7528\u4e86 hook \u5916\u6302\u5f0f\u6539\u53d8\u4e86\u672c\u5e94\u8be5\u4f18\u5148\u52a0\u8f7d\u7684 libc \u5171\u4eab\u5e93\uff0c\u5168\u5c40\u7b26\u53f7\u8868\u4e2d\u5df2\u7ecf\u6709\u6539\u9020\u8fc7\u7684 sleep \u4e86\uff0c\u6b64\u65f6\u5982\u679c\u60f3\u83b7\u53d6\u539f\u59cb\u7684 sleep \u7cfb\u7edf\u8c03\u7528\u5c31\u9700\u8981\u501f\u52a9 <code>dlsym<\/code>\uff08\u4ece\u52a8\u6001\u5e93\u4e2d\u83b7\u53d6\u7b26\u53f7\u5730\u5740\u51fd\u6570\uff09\u548c <code>RTLD_NEXT<\/code>\uff0c\u4e8c\u8005\u7ed3\u5408\u5c31\u662f\u641c\u7d22\u6ca1\u88ab\u52a0\u8f7d\u8fdb\u6765\u7684 libc \u5171\u4eab\u5e93\u91cc\u7684 sleep \u539f\u59cb\u7cfb\u7edf\u8c03\u7528\uff0c\u5373\u6267\u884c <code>socket_f<\/code> \u51fd\u6570\u5c31\u662f\u8c03\u7528\u539f\u59cb\u7cfb\u7edf\u8c03\u7528 <code>socket<\/code>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">do_io \u51fd\u6570<\/h3>\n\n\n\n<p>\u8be5\u9879\u76ee\u6709\u4e00\u90e8\u5206\u81ea\u5b9a\u4e49\u7684\u7cfb\u7edf\u8c03\u7528\uff08\u6bd4\u5982 accept\u3001read\u3001recv\u3001write\u3001send \u7b49\uff09\u8981\u5c06\u5176\u53c2\u6570\u653e\u5165 do_io \u6a21\u677f\u6765\u505a\u7edf\u4e00\u7684\u89c4\u8303\u5316\u5904\u7406\uff08\u5176\u5b83\u81ea\u5b9a\u4e49\u7684\u7cfb\u7edf\u8c03\u7528\u5c31\u662f\u4e00\u4e2a\u4e2a\u5355\u72ec\u7684\u903b\u8f91\uff09\u3002<\/p>\n\n\n\n<p>\u203b<strong><code>do_io<\/code> \u51fd\u6570\u5904\u7406\u6d41\u7a0b\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u662f\u5426\u542f\u7528 hook\uff1a\u5982\u679c\u6ca1\u542f\u7528 hook\uff0c\u76f4\u63a5\u8c03\u7528\u539f\u59cb\u7cfb\u7edf\u8c03\u7528\u8fd4\u56de\u3002<\/li>\n\n\n\n<li>\u83b7\u53d6 fd \u4e0a\u4e0b\u6587\uff1a\u901a\u8fc7 <code>FdMgr<\/code> \u83b7\u53d6 <code>fd<\/code> \u5bf9\u5e94\u7684\u4e0a\u4e0b\u6587 <code>FdCtx<\/code>\uff0c\u82e5\u65e0\u6216\u5df2\u5173\u95ed\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\u9519\u8bef\u3002<\/li>\n\n\n\n<li>\u5224\u65ad\u662f\u5426\u9700\u8981 hook\uff1a\u5982\u679c\u4e0d\u662f socket \u6216\u7528\u6237\u5df2\u7ecf\u8bbe\u7f6e\u4e86\u975e\u963b\u585e\u6a21\u5f0f\uff0c\u8bf4\u660e\u4e0d\u9002\u5408\u534f\u7a0b\u8c03\u5ea6\uff0c\u76f4\u63a5\u8c03\u7528\u539f\u59cb\u7cfb\u7edf\u8c03\u7528\u3002<\/li>\n\n\n\n<li>\u51c6\u5907\u8d85\u65f6\u63a7\u5236\u4fe1\u606f\uff1a\u83b7\u53d6\u8be5 IO \u64cd\u4f5c\u5bf9\u5e94\u7684\u8d85\u65f6\u65f6\u95f4\uff0c\u540c\u65f6\u51c6\u5907\u4e00\u4e2a <code>timer_info<\/code> \u7528\u4e8e\u540e\u7eed\u5904\u7406\u3002<\/li>\n\n\n\n<li>\u6267\u884c\u539f\u59cb IO \u64cd\u4f5c\uff1a\u521d\u6b21\u5c1d\u8bd5\u8c03\u7528\uff0c\u82e5\u9047 <code>EINTR<\/code>\uff08\u4e2d\u65ad\uff09\u5219\u91cd\u8bd5\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u8fd4\u56de <code>EAGAIN<\/code>\uff08\u8d44\u6e90\u6682\u65f6\u4e0d\u53ef\u7528\uff09\uff1a\n<ul class=\"wp-block-list\">\n<li>\u8bbe\u7f6e\u4e00\u4e2a\u8d85\u65f6\u5b9a\u65f6\u5668\uff08\u5982\u679c\u8bbe\u7f6e\u4e86\u8d85\u65f6\u65f6\u95f4\uff09\uff0c\u9632\u6b62\u957f\u65f6\u95f4\u963b\u585e\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528 <code>IOManager<\/code> \u6ce8\u518c\u4e8b\u4ef6\u76d1\u542c\u5668\uff08\u5982\u8bfb\/\u5199\u4e8b\u4ef6\uff09\uff0c\u5e76\u5c06\u5f53\u524d\u534f\u7a0b yield\uff0c\u8ba9\u51fa\u6267\u884c\u6743\u3002<\/li>\n\n\n\n<li>\u4e00\u65e6\u4e8b\u4ef6\u89e6\u53d1\u6216\u8d85\u65f6\uff0cepoll_wait \u5524\u9192\uff0c\u534f\u7a0b\u56de\u6765\u7ee7\u7eed\u6267\u884c\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u534f\u7a0b\u6062\u590d\u540e\u5224\u65ad\u72b6\u6001\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u56e0\u8d85\u65f6\u6062\u590d\uff0c\u8bbe\u7f6e errno \u5e76\u8fd4\u56de\u9519\u8bef\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u662f\u6b63\u5e38\u4e8b\u4ef6\u5524\u9192\uff0c\u5219\u518d\u6b21 retry \u5c1d\u8bd5 IO \u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6700\u7ec8\u8fd4\u56de IO \u8c03\u7528\u7ed3\u679c\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u534f\u7a0b\u548c\u8d85\u65f6\u673a\u5236\u4fdd\u8bc1\u4e86\u53ef\u9760\u6027\u548c\u5065\u58ee\u6027\uff0c\u5177\u4f53\u5728\u4e8e\u5982\u679c\u51fa\u73b0\u8d44\u6e90\u6682\u65f6\u4e0d\u53ef\u7528\uff0c\u6211\u4eec\u5c31\u6ce8\u518c\u65b0\u4e8b\u4ef6\u76d1\u542c\uff0c\u7136\u540e\u4e3b\u52a8 yield \u8ba9\u51fa\u6267\u884c\u6743\uff0c\u5f53\u5b9a\u65f6\u5668\u8d85\u65f6\u6216\u8005\u8d44\u6e90\u6ee1\u8db3\u5c31\u4f1a\u5524\u9192 epoll_wait\uff0c\u5c06\u4efb\u52a1\u653e\u5165\u5230\u8c03\u5ea6\u5668\u4e2d\u6267\u884c\uff0c\u7136\u540e\u53d6\u6d88\u76f8\u5e94\u5b9a\u65f6\u5668\uff0c\u8fd9\u5c31\u662f do_io \u51fd\u6570\u7684\u4f5c\u7528\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">weak_ptr \u5b9e\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>std::shared_ptr&lt;sylar::Timer&gt; timer; \/\/ \u58f0\u660e\u4e00\u4e2a\u5b9a\u65f6\u5668\u5bf9\u8c61\nstd::shared_ptr&lt;timer_info&gt; tinfo(new timer_info); \/\/ \u521b\u5efa\u4e00\u4e2a\u8ffd\u8e2a\u5b9a\u65f6\u5668\u662f\u5426\u53d6\u6d88\u7684\u5bf9\u8c61\nstd::weak_ptr&lt;timer_info&gt; winfo(tinfo); \/\/ \u5224\u65ad\u8ffd\u8e2a\u5b9a\u65f6\u5668\u5bf9\u8c61\u662f\u5426\u5b58\u5728<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">va_list \u53ef\u53d8\u53c2\u6570<\/h3>\n\n\n\n<p>\u5728\u4f7f\u7528 <code>va_list<\/code> \u5904\u7406\u53ef\u53d8\u53c2\u6570\u65f6\uff0c\u5fc5\u987b\u4e00\u4e2a\u4e00\u4e2a\u5730\u6309\u987a\u5e8f\u53d6\u51fa\u6bcf\u4e2a\u53c2\u6570\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int ioctl(int fd, unsigned long request, ...)\n{\n    va_list va; \/\/ \u58f0\u660e\u4e00\u4e2a va_list \u7c7b\u578b\u7684\u53d8\u91cf\uff0c\u7528\u4e8e\u8bbf\u95ee\u53ef\u53d8\u53c2\u6570\n    va_start(va, request); \/\/ \u521d\u59cb\u5316 va\uff0c\u4f7f\u5176\u6307\u5411\u53ef\u53d8\u53c2\u6570\u5217\u8868\u4e2d\u7684\u7b2c\u4e00\u4e2a\u53ef\u9009\u53c2\u6570\uff08request \u4e4b\u540e\u7684\u53c2\u6570\uff09\n    void* arg = va_arg(va, void*); \/\/ \u4ece\u53c2\u6570\u5217\u8868\u4e2d\u53d6\u51fa\u4e0b\u4e00\u4e2a\u53c2\u6570\uff08void* \u7c7b\u578b\uff09\uff0c\u8d4b\u503c\u7ed9 arg\n    va_end(va); \/\/ \u6e05\u7406 va \u5360\u7528\u7684\u8d44\u6e90\uff0c\u7ed3\u675f\u5bf9\u53ef\u53d8\u53c2\u6570\u7684\u8bbf\u95ee\n    ...\n}\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6d4b\u8bd5<\/h2>\n\n\n\n<p>\u53ef\u4ee5\u53d1\u73b0\u5728\u4f7f\u7528\u591a\u6838\u8d44\u6e90\u7684\u60c5\u51b5\u4e0b\uff0c\u6027\u80fd\u662f\u8d85\u8fc7\u539f\u751f epoll \u7684\u3002\u5177\u4f53\u7684\u5dee\u5f02\u53ef\u4ee5\u67e5\u770b\u6d4b\u8bd5\u7ed3\u679c\u4e2d\u7684 Requests per second\uff08\u541e\u5410\u7387\uff09\uff0c\u534f\u7a0b\u5e93\u548c\u539f\u751f epoll \u7684 rps \u5206\u522b\u662f 8064.96 \u548c 7832.78\u3002\u4f46\u662f\u76f8\u8f83\u4e8e\u539f\u751f epoll\uff0c\u534f\u7a0b\u5e93\u8fd8\u662f\u6709\u4e0d\u5c11\u7684\u7528\u6237\u6001\u6d88\u8017\u3002<\/p>\n\n\n\n<p><strong>\u5373\u4f7f\u5728\u5355\u7ebf\u7a0b\u7684\u60c5\u51b5\u4e0b\uff0c\u534f\u7a0b\u4e5f\u80fd\u5b9e\u73b0\u5f02\u6b65\u975e\u963b\u585e\u7f16\u7a0b<\/strong>\u3002\u534f\u7a0b\u53ef\u4ee5\u901a\u8fc7\u8c03\u5ea6\u673a\u5236\u5728 I\/O \u7b49\u5f85\u671f\u95f4\u4e3b\u52a8\u8ba9\u51fa\u63a7\u5236\u6743\uff0c\u4f7f\u540c\u4e00\u7ebf\u7a0b\u5185\u7684\u591a\u4e2a\u534f\u7a0b\u4ea4\u66ff\u6267\u884c\uff0c\u4ece\u800c\u9ad8\u6548\u5904\u7406\u5927\u91cf\u5e76\u53d1\u4efb\u52a1\u3002\u76f8\u6bd4\u4e8e\u591a\u7ebf\u7a0b\u6a21\u578b\uff0c\u534f\u7a0b\u907f\u514d\u4e86\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u5207\u6362\u7684\u5f00\u9500\uff0c\u5e76\u663e\u8457\u964d\u4f4e\u4e86\u5185\u5b58\u5360\u7528\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/02\/1740532775711.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"747\" height=\"958\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/02\/1740532775711.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2554\"  sizes=\"auto, (max-width: 747px) 100vw, 747px\" \/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/02\/image.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"736\" height=\"238\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/02\/image.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2555\"  sizes=\"auto, (max-width: 736px) 100vw, 736px\" \/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/02\/image-1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"219\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/02\/image-1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2556\"  sizes=\"auto, (max-width: 735px) 100vw, 735px\" \/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u8865\u5145<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u534f\u7a0b<\/h3>\n\n\n\n<p>\u534f\u7a0b\u662f\u4e00\u79cd\u6267\u884c\u8fc7\u7a0b\u4e2d\u80fd\u591f yield \u6682\u505c\uff08\u8ba9\u51fa\u6267\u884c\u6743\uff09\u548c resume \u6062\u590d\u7684\u5b50\u7a0b\u5e8f\uff0c\u4e5f\u53ef\u4ee5\u8bf4\u534f\u7a0b\u5c31\u662f\u51fd\u6570\u548c\u51fd\u6570\u8fd0\u884c\u72b6\u6001\u7684\u7ec4\u5408\u3002\u6b63\u5e38\u7684\u51fd\u6570\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u5c31\u76f4\u63a5\u6267\u884c\u5b8c\u6210\u4e86\uff0c\u4e2d\u95f4\u4e0d\u4f1a\u6709\u591a\u4f59\u7684\u6b65\u9aa4\uff0c\u66f4\u4e0d\u4f1a\u8bf4\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\u8fd9\u4e2a\u51fd\u6570\u6267\u884c\u5230\u4e00\u534a\u5c31\u8f6c\u5934\u53bb\u6267\u884c\u5176\u4ed6\u51fd\u6570\u4e86\u3002\u4f46\u662f\u534f\u7a0b\u4e0d\u4e00\u6837\uff0c\u4f7f\u7528\u534f\u7a0b\u9996\u5148\u8981\u7ed1\u5b9a\u4e00\u4e2a\u5165\u53e3\u51fd\u6570\uff0c\u5e76\u4e14\u53ef\u4ee5\u5728\u51fd\u6570\u7684\u4efb\u610f\u4f4d\u7f6e\u6682\u505c\u53bb\u6267\u884c\u5176\u4ed6\u51fd\u6570\uff0c\u4e4b\u540e\u518d\u56de\u6765\u6267\u884c\u6682\u505c\u7684\u51fd\u6570\uff0c\u6240\u4ee5\u8bf4<strong>\u534f\u7a0b\u662f\u51fd\u6570\u548c\u51fd\u6570\u8fd0\u884c\u72b6\u6001\u7684\u7ec4\u5408<\/strong>\uff08\u534f\u7a0b\u9700\u8981\u7ed1\u5b9a\u5165\u53e3\u51fd\u6570\uff0c\u534f\u7a0b\u8bb0\u5f55\u4e86\u51fd\u6570\u7684\u8fd0\u884c\u72b6\u6001\uff09\u3002<\/p>\n\n\n\n<p><strong>\u534f\u7a0b\u662f\u5982\u4f55\u505a\u5230\u8ba9\u51fd\u6570\u6682\u505c\u548c\u6062\u590d\u7684\uff1f<\/strong><\/p>\n\n\n\n<p>\u534f\u7a0b\u4f1a\u8bb0\u5f55\u534f\u7a0b\u4e0a\u4e0b\u6587\uff0c\u534f\u7a0b\u6267\u884c yield \u7684\u65f6\u5019\u534f\u7a0b\u4e0a\u4e0b\u6587\u8bb0\u5f55\u4e86\u534f\u7a0b\u6682\u505c\u7684\u4f4d\u7f6e\uff0c\u5f53 resume \u7684\u65f6\u5019\u5c31\u4ece\u6682\u505c\u7684\u5730\u65b9\u6062\u590d\u3002\u534f\u7a0b\u4e0a\u4e0b\u6587\u5305\u542b\u4e86\u51fd\u6570\u5728\u5f53\u524d\u72b6\u6001\u7684\u5168\u90e8 CPU \u5bc4\u5b58\u5668\u7684\u503c\uff0c\u8fd9\u4e9b\u5bc4\u5b58\u5668\u8bb0\u5f55\u7740\u51fd\u6570\u7684\u6808\u5e27\u3001\u4ee3\u7801\u6267\u884c\u7684\u4f4d\u7f6e\u7b49\u4fe1\u606f\uff0c\u5982\u679c\u628a\u8fd9\u4e9b\u4fe1\u606f\u4ea4\u7ed9 CPU \u53bb\u6267\u884c\u5c31\u80fd\u5b9e\u73b0\u4ece\u51fd\u6570\u6682\u505c\u7684\u5730\u65b9\u53bb\u6062\u590d\u6267\u884c\u3002\u9700\u8981\u6ce8\u610f\u5728\u5355\u7ebf\u7a0b\u7684\u60c5\u51b5\u4e0b\uff0c\u534f\u7a0b\u7684 resume \u548c yield \u4e00\u5b9a\u662f\u540c\u6b65\u7684\uff0c\u4e00\u4e2a\u534f\u7a0b\u8fdb\u884c yield\uff0c\u5fc5\u7136\u5bf9\u5e94\u53e6\u4e00\u4e2a\u534f\u7a0b\u7684 resume\uff0c\u56e0\u4e3a\u7ebf\u7a0b\u4e0d\u80fd\u6ca1\u6709\u6267\u884c\u4e3b\u4f53\u3002<\/p>\n\n\n\n<p>\u534f\u7a0b\u7684 yield \u548c resume \u662f\u5e94\u7528\u7a0b\u5e8f\u63a7\u5236\u7684\uff0c\u8fd9\u70b9\u548c\u7ebf\u7a0b\u4e0d\u4e00\u6837\uff0c\u7ebf\u7a0b\u7684\u8fd0\u884c\u548c\u8c03\u5ea6\u662f\u64cd\u4f5c\u7cfb\u7edf\u6765\u5b8c\u6210\u7684\uff0c\u56e0\u6b64\u534f\u7a0b\u4e5f\u53eb\u505a\u7528\u6237\u6001\u7ebf\u7a0b\u3001\u8f7b\u91cf\u7ea7\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5206\u7c7b<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5206\u7c7b\u4e00\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5bf9\u79f0\u534f\u7a0b<\/li>\n\n\n\n<li>\u975e\u5bf9\u79f0\u534f\u7a0b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5206\u7c7b\u4e8c\uff1a\n<ul class=\"wp-block-list\">\n<li>\u6709\u6808\u534f\u7a0b\n<ul class=\"wp-block-list\">\n<li><strong>\u72ec\u7acb\u6808<\/strong>\uff08\u672c\u9879\u76ee\u91c7\u7528\u8be5\u65b9\u6848\uff09<\/li>\n\n\n\n<li>\u5171\u4eab\u6808<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u65e0\u6808\u534f\u7a0b<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9\u79f0\u534f\u7a0b\u4e0e\u975e\u5bf9\u79f0\u534f\u7a0b<\/h4>\n\n\n\n<p>\u5bf9\u79f0\u534f\u7a0b\u548c\u975e\u5bf9\u79f0\u534f\u7a0b\u662f\u534f\u7a0b\u7684\u4e00\u79cd\u5206\u7c7b\uff0c\u5b83\u4eec\u7684\u533a\u522b\u4e3b\u8981\u5728\u4e8e<strong>\u534f\u7a0b\u7684\u5207\u6362\u65b9\u5f0f\u548c\u63a7\u5236\u6d41\u7684\u7ba1\u7406<\/strong>\u3002<\/p>\n\n\n\n<p><strong>\u5bf9\u79f0\u534f\u7a0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9a\u4e49\uff1a\u5404\u4e2a\u5bf9\u79f0\u534f\u7a0b\u4e4b\u95f4\u53ef\u4ee5\u76f4\u63a5\u76f8\u4e92\u8c03\u7528\u548c\u5207\u6362\uff0c\u63a7\u5236\u6d41\u53ef\u4ee5\u5728\u591a\u4e2a\u534f\u7a0b\u4e4b\u95f4\u81ea\u7531\u8f6c\u79fb\u3002\u5373\u534f\u7a0b\u4e4b\u95f4\u662f\u5e73\u7b49\u7684\uff0c\u5b83\u4eec\u53ef\u4ee5\u76f8\u4e92\u8c03\u7528\u5bf9\u65b9\uff0c\u6bcf\u4e2a\u534f\u7a0b\u53ef\u4ee5\u663e\u5f0f\u5730\u51b3\u5b9a\u5c06\u63a7\u5236\u6743\u8f6c\u79fb\u5230\u54ea\u4e2a\u534f\u7a0b\u3002<\/li>\n\n\n\n<li>\u7279\u70b9\uff1a\n<ul class=\"wp-block-list\">\n<li>\u81ea\u7531\u5207\u6362\uff1a\u534f\u7a0b\u53ef\u4ee5\u663e\u5f0f\u5730\u5c06\u63a7\u5236\u6743\u8f6c\u79fb\u7ed9\u5176\u4ed6\u534f\u7a0b\u3002<\/li>\n\n\n\n<li>\u5e73\u7b49\u5730\u4f4d\uff1a\u6240\u6709\u534f\u7a0b\u5728\u8c03\u5ea6\u65f6\u6ca1\u6709\u5c42\u7ea7\u7684\u5173\u7cfb\uff0c\u5f7c\u6b64\u5e73\u7b49\u3002<\/li>\n\n\n\n<li>\u590d\u6742\u6027\uff1a\u56e0\u4e3a\u53ef\u4ee5\u4efb\u610f\u5730\u5207\u6362\u534f\u7a0b\uff0c\u53ef\u80fd\u4f1a\u8ba9\u7a0b\u5e8f\u53d8\u5f97\u5f88\u590d\u6742\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4f7f\u7528\u573a\u666f\uff1a\n<ul class=\"wp-block-list\">\n<li>\u590d\u6742\u591a\u4efb\u52a1\u534f\u4f5c\uff1a\u591a\u4e2a\u4efb\u52a1\u9700\u8981\u9891\u7e41\u5207\u6362\uff0c\u5171\u540c\u534f\u540c\u5b8c\u6210\u4e00\u4e2a\u76ee\u6807\u3002<\/li>\n\n\n\n<li>\u72b6\u6001\u673a\u9a71\u52a8\u7cfb\u7edf\uff1a\u5f53\u6709\u591a\u4e2a\u72b6\u6001\u9700\u8981\u5f7c\u6b64\u76f4\u63a5\u5207\u6362\uff0c\u907f\u514d\u4e2d\u95f4\u6b65\u9aa4\u3002<\/li>\n\n\n\n<li>\u9700\u8981\u9891\u7e41\u5207\u6362\u7684\u8ba1\u7b97\u5bc6\u96c6\u578b\u4efb\u52a1\uff1a\u7279\u522b\u9002\u5408\u9ad8\u6027\u80fd\u573a\u666f\uff0c\u4f8b\u5982\u6e38\u620f\u5f00\u53d1\uff0c\u4e00\u4e2a\u4efb\u52a1\u53ef\u4ee5\u4e3b\u52a8\u5207\u6362\u5230\u53e6\u5916\u4e00\u4e2a\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>\u975e\u5bf9\u79f0\u534f\u7a0b\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9a\u4e49\uff1a\u975e\u5bf9\u79f0\u534f\u7a0b\u51fa\u73b0\u4e86\u7c7b\u4f3c\u5806\u6808\u7684\u8c03\u7528\u65b9\u548c\u88ab\u8c03\u7528\u65b9\uff0c\u4e5f\u5c31\u662f\u51fa\u73b0\u4e86\u5c42\u7ea7\u5173\u7cfb\u3002\u6bd4\u5982A\u8c03\u7528\u4e86B\uff0cB\u4f5c\u4e3a\u88ab\u8c03\u7528\u65b9\uff0c\u5728\u5176 yield \u540e\u5c31\u4f1a\u5c06\u6267\u884c\u7684\u63a7\u5236\u6743\u4ea4\u7ed9A\uff0c\u800c\u4e0d\u662f\u5176\u4ed6\u534f\u7a0b\u3002<\/li>\n\n\n\n<li>\u9002\u7528\u573a\u666f\uff1a\n<ul class=\"wp-block-list\">\n<li><strong>IO \u5bc6\u96c6\u578b\u5e94\u7528<\/strong>\uff1a\u901a\u5e38\u9700\u8981\u7b49\u5f85\u591a\u4e2a IO \u4e8b\u4ef6\u5b8c\u6210\uff0c\u4f8b\u5982 web \u670d\u52a1\u5668\u4e2d\u7684\u8bf7\u6c42\u5904\u7406\u548c\u6570\u636e\u5e93\u8bfb\u5199\u3002<\/li>\n\n\n\n<li>\u4efb\u52a1\u8c03\u5ea6\uff1a\u5728\u591a\u7ebf\u7a0b\u6216\u4efb\u52a1\u8c03\u5ea6\u4e2d\uff0c\u534f\u7a0b\u7531\u4e00\u4e2a\u4e2d\u5fc3\u8c03\u5ea6\u5668\u8fdb\u884c\u8c03\u5ea6\uff0c\u8fd9\u6837\u53ef\u4ee5\u7edf\u4e00\u5904\u7406\u4efb\u52a1\u5207\u6362\uff0c\u4f8b\u5982 web \u670d\u52a1\u6846\u67b6\u4e2d\u7684\u8bf7\u6c42\/\u54cd\u5e94\u5faa\u73af\u3002<\/li>\n\n\n\n<li>\u7b80\u5355\u7684\u751f\u4ea7\u8005\u6d88\u8d39\u8005\uff1a\u6bd4\u5982\u5728\u5f02\u6b65\u4e8b\u4ef6\u5faa\u73af\u4e2d\uff0c\u975e\u5bf9\u79f0\u534f\u7a0b\u7684\u542f\u52a8\u3001\u6682\u505c\u3001\u6062\u590d\u7531\u8c03\u5ea6\u8005\u63a7\u5236\uff0c\u7ed3\u6784\u6e05\u6670\uff0c\u907f\u514d\u4e86\u534f\u7a0b\u4e4b\u95f4\u7684\u76f8\u4e92\u4f9d\u8d56\u3002<br><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p>\u5c0f\u603b\u7ed3\uff1a<strong>\u5bf9\u79f0\u534f\u7a0b\u66f4\u7075\u6d3b\uff0c\u975e\u5bf9\u79f0\u534f\u7a0b\u66f4\u7b80\u5355<\/strong>\u3002\u5bf9\u4e8e\u5bf9\u79f0\u534f\u7a0b\u800c\u8a00\uff0c\u4e0d\u4ec5\u8981\u7ed1\u5b9a\u81ea\u5df1\u7684\u5165\u53e3\u51fd\u6570\u6765\u8fd0\u884c\uff0c\u8fd8\u9700\u8981\u51b3\u5b9a\u4e0b\u4e00\u4e2a\u6267\u884c\u7684\u534f\u7a0b\u8fdb\u884c\u5207\u6362\uff0c\u76f8\u5f53\u4e8e\u6bcf\u4e2a\u534f\u7a0b\u90fd\u505a\u4e86\u534f\u7a0b\u8c03\u5ea6\u5668\u7684\u5de5\u4f5c\u3002\u800c<strong>\u5728\u975e\u5bf9\u79f0\u534f\u7a0b\u4e2d\uff0c\u53ef\u4ee5\u8bbe\u8ba1\u4e13\u95e8\u7684\u8c03\u5ea6\u5668\u6765\u8d1f\u8d23\u8c03\u5ea6\u534f\u7a0b\uff0c\u6bcf\u4e2a\u534f\u7a0b\u53ea\u9700\u8fd0\u884c\u81ea\u5df1\u7684\u5165\u53e3\u51fd\u6570\uff0c\u7136\u540e\u7ed3\u675f\u65f6\u5c06\u8fd0\u884c\u6743\u4ea4\u56de\u7ed9\u8c03\u5ea6\u5668\uff0c\u7531\u8c03\u5ea6\u5668\u6765\u9009\u51fa\u4e0b\u4e00\u4e2a\u8981\u6267\u884c\u7684\u534f\u7a0b\u5373\u53ef\u3002<\/strong><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6709\u6808\u534f\u7a0b\u4e0e\u65e0\u6808\u534f\u7a0b<\/h4>\n\n\n\n<p>\u4e24\u8005\u7684\u533a\u522b\u5728\u4e8e<strong>\u662f\u5426\u4f7f\u7528\u72ec\u7acb\u7684<strong>\u8c03\u7528<\/strong>\u6808\u6765\u4fdd\u5b58\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587\u4fe1\u606f<\/strong>\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6709\u6808\u534f\u7a0b<\/strong>\uff08\u6bd4\u5982 Go \u8bed\u8a00\u7684\u534f\u7a0b\uff09\u4f7f\u7528\u72ec\u7acb\u7684\u8c03\u7528\u6808\u6765\u4fdd\u5b58\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587\u4fe1\u606f\uff08\u5f53\u524d\u72b6\u6001\u5168\u90e8\u5bc4\u5b58\u5668\u7684\u503c\uff09\u3002\u5f53\u534f\u7a0b\u88ab yield \u6302\u8d77\u65f6\uff0c\u6709\u6808\u534f\u7a0b\u4f1a\u4fdd\u5b58\u5f53\u524d\u7684\u6267\u884c\u72b6\u6001\uff08\u4f8b\u5982\u51fd\u6570\u8c03\u7528\u6808\u3001\u5c40\u90e8\u53d8\u91cf\u3001\u4f20\u9012\u7684\u53c2\u6570\u7b49\uff09\uff0c\u5e76\u5c06\u63a7\u5236\u6743\u4ea4\u8fd8\u7ed9\u8c03\u5ea6\u5668\u3002\u5f53\u534f\u7a0b\u88ab\u6062\u590d\u65f6\uff0c\u8c03\u7528\u6808\u4f1a\u5c06\u4e4b\u524d\u4fdd\u5b58\u7684\u534f\u7a0b\u72b6\u6001\u6062\u590d\uff0c\u4ece\u4e0a\u6b21\u6302\u8d77\u7684\u5730\u65b9\u7ee7\u7eed\u6267\u884c\u3002\u7c7b\u4f3c\u4e8e\u5185\u6838\u6001\u7ebf\u7a0b\u7684\u5b9e\u73b0\uff0c\u4e0d\u540c\u534f\u7a0b\u95f4\u5207\u6362\u8981\u5207\u6362\u5bf9\u5e94\u7684\u6808\u4e0a\u4e0b\u6587\uff0c\u53ea\u662f\u4e0d\u7528\u9677\u5165\u5185\u6838\u800c\u5df2\u3002<\/li>\n\n\n\n<li><strong>\u65e0\u6808\u534f\u7a0b<\/strong>\uff08\u6bd4\u5982 C++20 \u5f15\u5165\u7684\u534f\u7a0b\uff09\u4e0d\u9700\u8981\u72ec\u7acb\u7684\u8c03\u7528\u6808\u6765\u4fdd\u5b58\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587\u4fe1\u606f\uff0c\u534f\u7a0b\u7684\u4e0a\u4e0b\u6587\u90fd\u653e\u5230\u516c\u5171\u5185\u5b58\u4e2d\u3002\u5f53\u534f\u7a0b\u88ab yield \u6302\u8d77\u65f6\uff0c\u65e0\u6808\u534f\u7a0b\u4f1a\u5c06\u72b6\u6001\u4fdd\u5b58\u5728\u5806\u4e0a\u7684\u6570\u636e\u7ed3\u6784\u4e2d\uff0c\u5e76\u5c06\u63a7\u5236\u6743\u4ea4\u8fd8\u7ed9\u8c03\u5ea6\u5668\u3002\u5f53\u534f\u7a0b\u88ab\u6062\u590d\u65f6\uff0c\u65e0\u6808\u534f\u7a0b\u4f1a\u5c06\u4e4b\u524d\u4fdd\u5b58\u7684\u72b6\u6001\u4ece\u5806\u4e2d\u53d6\u51fa\uff0c\u5e76\u4ece\u4e0a\u6b21\u6302\u8d77\u7684\u5730\u65b9\u7ee7\u7eed\u6267\u884c\u3002\u534f\u7a0b\u7684\u5207\u6362\u4f7f\u7528\u72b6\u6001\u673a\u6765\u5b9e\u73b0\uff0c\u4e0d\u7528\u5207\u6362\u5bf9\u5e94\u7684\u4e0a\u4e0b\u6587\uff0c\u6bd4\u6709\u6808\u534f\u7a0b\u8981\u8f7b\u91cf\u8bb8\u591a\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6709\u6808\u548c\u65e0\u6808\u7684\u4e00\u4e2a\u533a\u522b\u662f\u770b\u80fd\u4e0d\u80fd\u4efb\u610f\u5730\u4fdd\u5b58\u5e76\u5207\u6362\u5d4c\u5957\u51fd\u6570\uff0c\u56e0\u4e3a\u65e0\u6808\u534f\u7a0b\u4e0d\u5207\u6362\u8c03\u7528\u6808\uff0c\u6240\u4ee5\u65e0\u6cd5\u505a\u5230\u5d4c\u5957\u591a\u4e2a\u51fd\u6570\u8fd8\u80fd\u50cf\u6709\u6808\u534f\u7a0b\u4e00\u6837\u5207\u6362\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u72ec\u7acb\u6808\u4e0e\u5171\u4eab\u6808<\/h4>\n\n\n\n<p>\u72ec\u7acb\u6808\u548c\u5171\u4eab\u6808\u90fd\u662f\u6709\u6808\u534f\u7a0b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5171\u4eab\u6808<\/strong>\u5c31\u662f\u6240\u6709\u7684\u534f\u7a0b\u5728\u8fd0\u884c\u65f6\u90fd\u4f7f\u7528\u540c\u4e00\u4e2a\u6808\u7a7a\u95f4\uff0c\u6bcf\u6b21\u534f\u7a0b\u5207\u6362\u65f6\u8981\u628a\u81ea\u5df1\u7528\u7684\u5171\u4eab\u6808\u7a7a\u95f4\u62f7\u8d1d\u3002\u534f\u7a0b\u8c03\u7528 yield \u7684\u65f6\u5019\uff0c\u8be5\u534f\u7a0b\u6808\u5185\u5bb9\u6682\u65f6\u4fdd\u5b58\u8d77\u6765\uff0c\u4fdd\u5b58\u7684\u65f6\u5019\u9700\u8981\u7528\u5230\u591a\u5c11\u5185\u5b58\u5c31\u5f00\u8f9f\u591a\u5c11\uff0c\u8fd9\u6837\u5c31\u51cf\u5c11\u4e86\u5185\u5b58\u7684\u6d6a\u8d39\uff1bresume \u8be5\u534f\u7a0b\u7684\u65f6\u5019\uff0c\u534f\u7a0b\u4e4b\u524d\u4fdd\u5b58\u7684\u6808\u5185\u5bb9\uff0c\u4f1a\u88ab\u91cd\u65b0\u62f7\u8d1d\u5230\u8fd0\u884c\u65f6\u7684\u6808\u4e2d\u3002<\/li>\n\n\n\n<li><strong>\u72ec\u7acb\u6808<\/strong>\u5c31\u662f\u6bcf\u4e2a\u534f\u7a0b\u7684<strong>\u8c03\u7528\u6808<\/strong>\u7a7a\u95f4\u90fd\u662f<strong>\u72ec\u7acb<\/strong>\u7684\uff08\u6ce8\u610f\u533a\u5206\u5f00\u8c03\u7528\u6808\u548c\u6808\uff0c\u524d\u8005\u662f\u6709\u6808\u534f\u7a0b\u7684\u6982\u5ff5\uff0c\u540e\u8005\u662f\u4e2a\u51fd\u6570\u90fd\u9700\u8981\u7528\u5230\u6808\uff0c\u4e0d\u7136\u5c40\u90e8\u53d8\u91cf\u3001\u51fd\u6570\u53c2\u6570\u5f80\u54ea\u5b58\uff09\uff0c\u4e14\u56fa\u5b9a\u5927\u5c0f\u3002\u4f18\u70b9\u662f\u534f\u7a0b\u5207\u6362\u7684\u65f6\u5019\uff0c\u5185\u5b58\u4e0d\u7528\u62f7\u8d1d\u6765\u62f7\u8d1d\u53bb\u3002\u800c\u7f3a\u70b9\u662f\u5185\u5b58\u7a7a\u95f4\u6d6a\u8d39\uff0c\u56e0\u4e3a\u6808\u7a7a\u95f4\u5728\u8fd0\u884c\u65f6\u4e0d\u80fd\u968f\u65f6\u6269\u5bb9\uff0c\u5426\u5219\u5982\u679c\u6709\u6307\u9488\u64cd\u4f5c\u4e86\u6808\u5185\u5b58\uff0c\u6269\u5bb9\u540e\u5c06\u5bfc\u81f4\u6307\u9488\u5931\u6548\u3002\u4e3a\u4e86\u9632\u6b62\u6808\u5185\u5b58\u4e0d\u591f\uff0c\u6bcf\u4e2a\u534f\u7a0b\u90fd\u8981\u9884\u5148\u5f00\u4e00\u4e2a\u8db3\u591f\u7684\u6808\u7a7a\u95f4\u4f7f\u7528\uff0c\u5f88\u591a\u534f\u7a0b\u5728\u5b9e\u9645\u8fd0\u884c\u4e2d\u7528\u4e0d\u4e86\u8fd9\u4e48\u5927\u7684\u7a7a\u95f4\uff0c\u5c31\u5fc5\u7136\u9020\u6210\u5185\u5b58\u7684\u6d6a\u8d39\u548c\u5f00\u8f9f\u5927\u5185\u5b58\u9020\u6210\u7684\u6027\u80fd\u635f\u8017\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u603b\u7ed3\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6240\u6709\u5171\u4eab\u6808\u4f7f\u7528\u516c\u5171\u5185\u5b58\uff0c\u8282\u7701\u4e86\u5185\u5b58\uff0c\u4f46\u662f\u534f\u7a0b\u5207\u6362\u9700\u8981\u9891\u7e41\u8fdb\u884c\u5185\u5b58\u7684\u62f7\u8d1d\uff0c\u5f71\u54cd CPU \u6027\u80fd\u3002<\/li>\n\n\n\n<li>\u72ec\u7acb\u6808\u76f8\u5bf9\u7b80\u5355\uff0c\u4f46\u5bb9\u6613\u9020\u6210\u5185\u5b58\u7a7a\u95f4\u7684\u6d6a\u8d39\u3002<br><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f18\u7f3a\u70b9<\/h3>\n\n\n\n<p><strong>\u4f18\u70b9\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9ad8\u6548\u8d44\u6e90\u5229\u7528\uff1a\u534f\u7a0b\u6bd4\u7ebf\u7a0b\u66f4\u8f7b\u91cf\uff0c\u76f8\u8f83\u4e8e\u534f\u7a0b\uff0c\u4e00\u4e2a\u7ebf\u7a0b\u7684\u521b\u5efa\u548c\u4e0a\u4e0b\u6587\u5207\u6362\u5f00\u9500\u8f83\u5927\u3002<\/li>\n\n\n\n<li>\u7b80\u5316\u5f02\u6b65\u7f16\u7a0b\uff1a\u4f7f\u7528\u534f\u7a0b\u6765\u5199\u5f02\u6b65\u7a0b\u5e8f\u770b\u8d77\u6765\u5c31\u597d\u50cf\u5728\u5199\u540c\u6b65\u7684\u4ee3\u7801\uff0c\u63d0\u5347\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u7ef4\u62a4\u6027\u3002<\/li>\n\n\n\n<li>\u975e\u963b\u585e\u64cd\u4f5c\uff1a\u534f\u7a0b\u6267\u884c\u975e\u963b\u585e\u64cd\u4f5c\uff0c\u4f7f\u5f97\u7a0b\u5e8f\u53ef\u4ee5\u5728\u7b49\u5f85 IO \u6216\u5176\u4ed6\u8017\u65f6\u64cd\u4f5c\u65f6\u7ee7\u7eed\u6267\u884c\u5176\u4ed6\u4efb\u52a1\uff0c\u63d0\u9ad8\u4e86\u7a0b\u5e8f\u7684\u5e76\u53d1\u6027\u548c\u54cd\u5e94\u6027\u3002<\/li>\n\n\n\n<li>\u9002\u7528\u4e8e\u9ad8\u5e76\u53d1\u573a\u666f\uff1a\u7531\u4e8e\u534f\u7a0b\u5f00\u9500\u5c0f\uff0c\u9002\u5408\u5904\u7406\u5927\u91cf\u7684\u5e76\u53d1\u4efb\u52a1\uff0c\u5982\u7f51\u7edc\u8bf7\u6c42\u6216\u9ad8\u5e76\u53d1\u7684 IO \u64cd\u4f5c\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u7f3a\u70b9\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8c03\u8bd5\u56f0\u96be\uff1a\u7531\u4e8e\u534f\u7a0b\u6d89\u53ca\u5f02\u6b65\u548c\u5ef6\u8fdf\u6267\u884c\uff0c\u8c03\u8bd5\u548c\u8ddf\u8e2a\u95ee\u9898\u53ef\u80fd\u4f1a\u6bd4\u540c\u6b65\u4ee3\u7801\u66f4\u590d\u6742\uff0c\u5c24\u5176\u662f\u591a\u4e2a\u534f\u7a0b\u4ea4\u4e92\u65f6\u3002<\/li>\n\n\n\n<li>\u590d\u6742\u7684\u7ba1\u7406\uff1a\u534f\u7a0b\u7684\u9ad8\u7ea7\u7279\u6027\uff08\u5982\u534f\u7a0b\u8c03\u5ea6\u3001\u4f18\u5148\u7ea7\u7ba1\u7406\u7b49\uff09\u9700\u8981\u989d\u5916\u7684\u8c03\u5ea6\u5668\u6216\u6846\u67b6\u652f\u6301\uff0c\u8fd9\u53ef\u80fd\u4f1a\u589e\u52a0\u7cfb\u7edf\u7684\u590d\u6742\u6027\u3002<\/li>\n\n\n\n<li>\u534f\u7a0b\u72b6\u6001\u7ba1\u7406\uff1a\u5728\u534f\u7a0b\u4e4b\u95f4\u5171\u4eab\u548c\u7ba1\u7406\u72b6\u6001\u53ef\u80fd\u4f1a\u5f15\u5165\u590d\u6742\u6027\uff0c\u9700\u8981\u4ed4\u7ec6\u8bbe\u8ba1\u907f\u514d\u6570\u636e\u7ade\u4e89\u548c\u4e00\u81f4\u6027\u7684\u95ee\u9898\u3002<\/li>\n\n\n\n<li><strong>\u65e0\u6cd5\u5229\u7528\u591a\u6838\u8d44\u6e90<\/strong>\uff1a\u7ebf\u7a0b\u624d\u662f\u7cfb\u7edf\u8c03\u5ea6\u7684\u57fa\u672c\u5355\u4f4d\uff0c<strong>\u5355\u7ebf\u7a0b\u4e0b\u7684\u591a\u534f\u7a0b\u672c\u8d28\u4e0a\u8fd8\u662f\u4e32\u884c\u6267\u884c\u7684<\/strong>\uff0c\u53ea\u80fd\u7528\u5230\u5355\u6838\u8ba1\u7b97\u8d44\u6e90\uff0c\u6240\u4ee5\u534f\u7a0b\u5f80\u5f80\u8981\u4e0e\u591a\u7ebf\u7a0b\u3001\u591a\u8fdb\u7a0b\u4e00\u8d77\u4f7f\u7528\u3002\n<ul class=\"wp-block-list\">\n<li>\u7ebf\u7a0b\u53ef\u4ee5\u76f4\u63a5\u7531\u64cd\u4f5c\u7cfb\u7edf\u8c03\u5ea6\uff0c\u64cd\u4f5c\u7cfb\u7edf\u53ef\u4ee5\u5c06\u4e0d\u540c\u7ebf\u7a0b\u5206\u914d\u5230\u4e0d\u540c\u7684 CPU \u6838\u4e0a\u5e76\u884c\u6267\u884c\uff0c\u56e0\u6b64\u7ebf\u7a0b\u7ea7\u522b\u7684\u5e76\u53d1\u53ef\u4ee5\u5229\u7528\u591a\u6838\u8d44\u6e90\u3002\u800c\u7531\u5e94\u7528\u7a0b\u5e8f\u76f4\u63a5\u63a7\u5236\u7684\u8c03\u5ea6\u662f\u65e0\u6cd5\u6307\u5b9a\u548c\u5206\u914d\u5230\u5177\u4f53\u7684 CPU \u6838\u4e0a\u7684\uff0c\u6bd4\u5982\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u521b\u5efa\u3001\u9500\u6bc1\u3001\u63a7\u5236\u7ebf\u7a0b\u7b49\uff0c\u4f46\u8fd9\u4e9b\u90fd\u662f\u903b\u8f91\u4e0a\u7684\u63a7\u5236\uff0c\u64cd\u4f5c\u7cfb\u7edf\u624d\u662f\u7ebf\u7a0b\u5b9e\u9645\u8fd0\u884c\u7684\u7ba1\u7406\u8005\uff0c\u51b3\u5b9a\u4e86\u7ebf\u7a0b\u4ec0\u4e48\u65f6\u5019\u8fd0\u884c\uff0c\u4ee5\u53ca\u5206\u914d\u5230\u54ea\u4e2a CPU \u6838\u5fc3\u4e0a\u8fd0\u884c\u3002<\/li>\n\n\n\n<li>\u534f\u7a0b\u5b9e\u9645\u4e0a\u662f\u4f9d\u9644\u5728\u7ebf\u7a0b\u4e0a\u7684\uff0c\u5e76\u4e14\u5b8c\u5168\u7531\u5e94\u7528\u7a0b\u5e8f\u63a7\u5236\u3002CPU \u6838\u7684\u4f7f\u7528\u53d6\u51b3\u4e8e\u7ebf\u7a0b\u7684\u6570\u91cf\uff0c\u5982\u679c\u662f\u5355\u7ebf\u7a0b\uff0c\u54ea\u6015\u6709\u591a\u4e2a\u534f\u7a0b\u4e5f\u65e0\u6cd5\u5229\u7528 CPU \u7684\u591a\u6838\u5fc3\u8d44\u6e90\u3002\u56e0\u4e3a\u5355\u7ebf\u7a0b\u53ea\u80fd\u88ab\u5206\u914d\u5230\u4e00\u4e2a CPU \u6838\u4e0a\uff0c\u54ea\u6015\u6b64\u65f6\u6709\u591a\u4e2a\u534f\u7a0b\u4e5f\u53ea\u80fd\u7b49\u5f85\u4e00\u4e2a\u534f\u7a0b yield \u540e\uff0c\u53e6\u4e00\u4e2a\u534f\u7a0b\u624d\u80fd\u6267\u884c resume\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">ucontext \u65cf\u51fd\u6570<\/h3>\n\n\n\n<p>Linux \u4e0b\u7684 ucontext \u65cf\u51fd\u6570\u662f GNU C \u5e93\u63d0\u4f9b\u7684\u4e00\u7ec4\u521b\u5efa\u3001\u4fdd\u5b58\u3001\u5207\u6362\u7528\u6237\u6001\u6267\u884c\u4e0a\u4e0b\u6587\u7684 API\uff0c\u8fd9\u662f<strong>\u6709\u6808\u534f\u7a0b<\/strong>\u80fd\u591f\u968f\u65f6\u6682\u505c\u3001\u6062\u590d\u548c\u5207\u6362\u7684\u5173\u952e\uff0c\u901a\u5e38\u7528\u4e8e\u5b9e\u73b0\u975e\u5bf9\u79f0\u534f\u7a0b\u7684\u5b9e\u73b0\u3002\uff08\u4e0d\u8fc7\u9ad8\u6027\u80fd\u7684\u534f\u7a0b\u5f80\u5f80\u4f1a\u4f7f\u7528\u66f4\u5e95\u5c42\u7684\u6c47\u7f16\u8bed\u8a00\u6765\u5b9e\u73b0\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/**\n * \u7528\u6237\u6001\u4e0a\u4e0b\u6587\u7ed3\u6784\u4f53\uff08\u5e73\u53f0\u76f8\u5173\uff0c\u4e0d\u540cCPU\u7684\u5bc4\u5b58\u5668\u4e0d\u540c\uff09\n * 4\u4e2a\u6838\u5fc3\u6210\u5458\u5982\u4e0b\uff1a\n *\/\ntypedef struct ucontext_t {\n    struct ucontext_t *uc_link; \/\/ \u5f53\u524d\u534f\u7a0b\u7ed3\u675f\u540e\uff0c\u4e0b\u4e00\u4e2a\u8981\u6062\u590d\u7684\u534f\u7a0b\u4e0a\u4e0b\u6587\uff08\u7c7b\u4f3c\u51fd\u6570\u8fd4\u56de\u5730\u5740\uff09\n    sigset_t uc_sigmask; \/\/ \u5f53\u524d\u4e0a\u4e0b\u6587\u7684\u4fe1\u53f7\u5c4f\u853d\u5b57\uff08\u963b\u585e\u54ea\u4e9b\u4fe1\u53f7\uff09\n    stack_t uc_stack; \/\/ \u5f53\u524d\u534f\u7a0b\u7684\u8fd0\u884c\u65f6\u6808\u7a7a\u95f4\uff08\u9700\u624b\u52a8\u5206\u914d\u5185\u5b58\uff09\n    mcontext_t uc_mcontext; \/\/ \u5e73\u53f0\u76f8\u5173\u7684\u5bc4\u5b58\u5668\u503c\uff08\u5982PC\u3001SP\u7b49\uff09\n    \/\/ ... \u5176\u4ed6\u5e73\u53f0\u6269\u5c55\u6210\u5458\n} ucontext_t;\n\n\/*===== \u4e0a\u4e0b\u6587\u64cd\u4f5cAPI =====*\/\n\n\/\/ \u83b7\u53d6\u5f53\u524d\u7684\u4e0a\u4e0b\u6587\uff0c\u4fdd\u5b58\u5f53\u524d\u6267\u884c\u72b6\u6001\u5230 ucp \u4e2d\uff08\u7c7b\u4f3c\u4e8e\u5b58\u6863\uff09\nint getcontext(ucontext_t *ucp);\n\n\/\/ \u76f4\u63a5\u8df3\u8f6c\u5230 ucp \u4fdd\u5b58\u7684\u4e0a\u4e0b\u6587\u5bf9\u5e94\u7684\u51fd\u6570\u4e2d\u6267\u884c\uff08\u7c7b\u4f3c\u4e8e\u8bfb\u6863\uff09\nint setcontext(const ucontext_t *ucp);\n\n\/**\n * \u914d\u7f6e\u534f\u7a0b\u5165\u53e3\u51fd\u6570\u548c\u8fd0\u884c\u73af\u5883\n * @param ucp       getcontext\u83b7\u53d6\u7684\u4e0a\u4e0b\u6587\n * @param func      \u534f\u7a0b\u5165\u53e3\u51fd\u6570\n * @param argc      func\u7684\u53c2\u6570\u4e2a\u6570\n * @param ...       func\u7684\u5177\u4f53\u53c2\u6570\n * \n * \u5173\u952e\u8981\u6c42\uff1a\n * 1. \u5fc5\u987b\u63d0\u524d\u4e3a ucp-&gt;uc_stack \u5206\u914d\u6808\u5185\u5b58\n * 2. \u82e5\u8bbe\u7f6e\u4e86 uc_link\uff0cfunc \u6267\u884c\u5b8c\u6bd5\u540e\uff08\u5373\u8be5\u534f\u7a0b\u6267\u884c\u5b8c\u6bd5\u540e\uff09\u4f1a\u81ea\u52a8\u8df3\u8f6c\u5230 uc_link \u6307\u5411\u7684\u4e0a\u4e0b\u6587\n * 3. \u82e5\u672a\u8bbe\u7f6e uc_link\uff0cfunc \u672b\u5c3e\u5fc5\u987b\u624b\u52a8\u8c03\u7528 setcontext\/swapcontext \u4ee5\u6307\u5b9a\u4e00\u4e2a\u6709\u6548\u7684\u540e\u7ee7\u4e0a\u4e0b\n\u6587\uff0c\u597d\u8ba9\u8be5\u534f\u7a0b\u7ed3\u675f\u540e\u5207\u6362\u8fc7\u53bb\uff0c\u5426\u5219\u7a0b\u5e8f\u5c31\u8dd1\u98de\u4e86\n * 4. makecontext \u6267\u884c\u540e\uff0cucp \u4f1a\u4e0e\u51fd\u6570 func \u7ed1\u5b9a\uff0c\u8c03\u7528 setcontext(ucp) \u6216 swapcontext(&amp;old, ucp) \u65f6\uff0c\u7a0b\u5e8f\u4f1a\u4ece func \u7684\u5165\u53e3\u70b9\u5f00\u59cb\u6267\u884c\u3002\n *\/\nvoid makecontext(ucontext_t *ucp, void (*func)(), int argc, ...);\n\n\/**\n * \u534f\u7a0b\u5207\u6362\u7684\u6838\u5fc3 API\n * @param oucp  \u4fdd\u5b58\u5f53\u524d\u4e0a\u4e0b\u6587\u5230\u6b64\u5904\uff08\u7c7b\u4f3c\u5b58\u6863\uff09\n * @param ucp   \u8df3\u8f6c\u5230\u76ee\u6807\u4e0a\u4e0b\u6587\uff08\u7c7b\u4f3c\u8bfb\u6863\uff09\n * \n * \u5178\u578b\u6d41\u7a0b\uff1a\n * 1. \u534f\u7a0bA\u8c03\u7528 swapcontext(&amp;ctx_A, &amp;ctx_B) \u4fdd\u5b58\u81ea\u5df1\uff0c\u5207\u6362\u5230B\n * 2. \u534f\u7a0bB\u901a\u8fc7 swapcontext(&amp;ctx_B, &amp;ctx_A) \u5207\u6362\u56deA\n *\/\nint swapcontext(ucontext_t *oucp, const ucontext_t *ucp);<\/code><\/pre>\n\n\n\n<p>\u8865\u5145\uff1a<code>ucontext_t<\/code> \u4e2d\u7684 <code>uc_mcontext<\/code> \u6210\u5458\u662f\u5b9e\u73b0\u534f\u7a0b\u4e0a\u4e0b\u6587\u4fdd\u5b58\u548c\u6062\u590d\u7684\u5173\u952e\uff0c\u901a\u8fc7\u4fdd\u5b58 PC \u6307\u9488\u548c\u8c03\u7528\u6808\u6307\u9488\u6765\u5b9e\u73b0\u3002\u5f53\u4e00\u4e2a\u534f\u7a0b yield \u65f6\uff0c\u7cfb\u7edf\u4f1a\u4fdd\u5b58\u5f53\u524d\u7684\u5904\u7406\u5668\u72b6\u6001\u5230 <code>uc_mcontext<\/code> \u4e2d\uff0c\u5305\u62ec\u6240\u6709\u7684\u5bc4\u5b58\u5668\u503c\u548c\u5176\u4ed6\u5fc5\u8981\u7684\u5904\u7406\u5668\u72b6\u6001\u4fe1\u606f\u3002\u5f53\u9700\u8981 resume \u8fd9\u4e2a\u534f\u7a0b\u65f6\uff0c\u7cfb\u7edf\u4f1a\u5c06 <code>uc_mcontext<\/code> 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[69],"tags":[102,101],"class_list":["post-2534","post","type-post","status-publish","format-standard","hentry","category-project","tag-102","tag-101"],"_links":{"self":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts\/2534","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2534"}],"version-history":[{"count":68,"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts\/2534\/revisions"}],"predecessor-version":[{"id":3631,"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts\/2534\/revisions\/3631"}],"wp:attachment":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2534"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2534"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2534"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}