{"id":44461,"date":"2025-06-19T07:36:19","date_gmt":"2025-06-18T23:36:19","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/44461.html"},"modified":"2025-06-19T07:36:19","modified_gmt":"2025-06-18T23:36:19","slug":"%e3%80%90%e9%a1%b9%e7%9b%ae%e3%80%91%e4%bb%bfmuduo%e5%ba%93one-thread-one-loop%e5%bc%8f%e5%b9%b6%e5%8f%91%e6%9c%8d%e5%8a%a1%e5%99%a8%ef%bc%88%e4%b8%8a%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/44461.html","title":{"rendered":"\u3010\u9879\u76ee\u3011\u4effmuduo\u5e93one thread one loop\u5f0f\u5e76\u53d1\u670d\u52a1\u5668\uff08\u4e0a\uff09"},"content":{"rendered":"

\u00a0\u00a0📚\u00a0\u535a\u4e3b\u7684\u4e13\u680f<\/p>\n

🐧\u00a0Linux\u00a0\u00a0\u00a0|\u00a0\u00a0 🖥\ufe0f\u00a0C++\u00a0\u00a0\u00a0|\u00a0\u00a0 📊\u00a0\u6570\u636e\u7ed3\u6784\u00a0\u00a0|\u00a0💡C++ \u7b97\u6cd5\u00a0|\u00a0🅒\u00a0C \u8bed\u8a00\u00a0 |\u00a0🌐\u00a0\u8ba1\u7b97\u673a\u7f51\u7edc\u00a0|🗃\ufe0f\u00a0mysql<\/p>\n

\u9879\u76ee\u6587\u7ae0：<\/span>\u4effmuduo\u5e93one thread one loop\u5f0f\u5e76\u53d1\u670d\u52a1\u5668\u524d\u7f6e\u77e5\u8bc6\u51c6\u5907<\/p>\n

\u601d\u7ef4\u5bfc\u56fe\u4e0e\u9879\u76ee\u4ee3\u7801\u5df2\u4e0a\u4f20\u81f3\u6211\u7684gitee<\/span><\/p>\n

\u672c\u6587\u6458\u8981：<\/span><\/p>\n

\u672c\u6587\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u7f51\u7edc\u7f16\u7a0b\u4e2d\u5173\u952e\u6a21\u5757\u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0，\u5305\u62ecBuffer\u7f13\u51b2\u533a\u6a21\u5757\u3001Socket\u5957\u63a5\u5b57\u6a21\u5757\u3001Channel\u4e8b\u4ef6\u7ba1\u7406\u6a21\u5757\u3001Poller\u63cf\u8ff0\u7b26\u76d1\u63a7\u6a21\u5757\u3001EventLoop\u4e8b\u4ef6\u5faa\u73af\u6a21\u5757\u548cTimerWheel\u5b9a\u65f6\u5668\u6a21\u5757\u3002Buffer\u6a21\u5757\u91c7\u7528vector<char>\u4f5c\u4e3a\u5e95\u5c42\u5bb9\u5668，\u907f\u514dstring\u7684'\\\\0'\u622a\u65ad\u95ee\u9898，\u63d0\u4f9b\u6570\u636e\u5b58\u50a8\u548c\u7ba1\u7406\u529f\u80fd；Socket\u6a21\u5757\u5c01\u88c5\u4e86TCP\u5957\u63a5\u5b57\u64cd\u4f5c；Channel\u548cPoller\u6a21\u5757\u5b9e\u73b0\u5bf9\u63cf\u8ff0\u7b26\u7684\u4e8b\u4ef6\u76d1\u63a7\u7ba1\u7406；EventLoop\u6a21\u5757\u91c7\u7528one thread one loop\u6a21\u578b，\u901a\u8fc7\u4efb\u52a1\u961f\u5217\u548ceventfd\u5b9e\u73b0\u7ebf\u7a0b\u5b89\u5168\u7684\u4e8b\u4ef6\u5904\u7406；TimerWheel\u6a21\u5757\u63d0\u4f9b\u5b9a\u65f6\u4efb\u52a1\u529f\u80fd\u3002\u5404\u6a21\u5757\u901a\u8fc7\u56de\u8c03\u673a\u5236\u534f\u540c\u5de5\u4f5c，\u6700\u7ec8\u5b9e\u73b0\u4e86\u4e00\u4e2a\u9ad8\u6027\u80fd\u7684\u7f51\u7edc\u670d\u52a1\u5668\u6846\u67b6，\u5e76\u901a\u8fc7TCP\u5ba2\u6237\u7aef\/\u670d\u52a1\u5668\u6d4b\u8bd5\u9a8c\u8bc1\u4e86\u529f\u80fd\u5b8c\u6574\u6027\u3002\u4ee3\u7801\u5df2\u4e0a\u4f20\u81f3Gitee\u4ed3\u5e93\u3002\u7531\u4e8e\u6587\u7ae0\u5b57\u6570\u8fc7\u591a，\u5c06\u65b0\u66f4\u65b0\u4e00\u7bc7\u6587\u7ae0\u8bb2\u89e3\u5176\u4f59\u6a21\u5757（Connection\u3001Accepter\u3001LoopThread\u3001LoopThreadPool\u3001TcpServer\u3001EchoServer\u7b49\u6a21\u5757…..）<\/span><\/p>\n

\u9879\u76ee\u4ee3\u7801\u4f1a\u968f\u6587\u7ae0\u5185\u5bb9\u540c\u6b65\u66f4\u65b0，\u60a8\u4e5f\u53ef\u4ee5\u901a\u8fc7\u4e3b\u9875\u52a8\u6001\u76f4\u63a5\u67e5\u770b\u672c\u6587\u5404\u6a21\u5757\u5bf9\u5e94\u7684\u8bb2\u89e3\u4ee3\u7801\u3002<\/span>（\u533a\u95f4\u57286.13-6.16\u8fd9\u51e0\u5929）<\/span><\/p>\n

\u672c\u6587\u4ecb\u7ecd\u7684\u90e8\u5206\u9879\u76ee\u7ed3\u6784\u5982\u4e0b\u56fe\u6240\u793a，\u6709\u52a9\u4e8e\u8bfb\u8005\u5feb\u901f\u4e86\u89e3\u6574\u4f53\u6846\u67b6\u3002<\/span><\/p>\n

\"\"<\/p>\n

\u4e00\u3001Buffer\u6a21\u5757（\u7f13\u51b2\u533a\u6a21\u5757）<\/span><\/h2>\n

\u63d0\u4f9b\u7684\u529f\u80fd：\u5b58\u50a8\u6570\u636e\u3001\u53d6\u51fa\u6570\u636e\u3001\u6570\u636e\u7ba1\u7406（\u81ea\u52a8\u6269\u5c55\u5b58\u50a8\u7a7a\u95f4）<\/span><\/p>\n

1.1 Buffer\u7f13\u51b2\u533a\u8bbe\u8ba1\u601d\u60f3：<\/span><\/h3>\n

\u5185\u5b58\u7a7a\u95f4\u7ba1\u7406：<\/span><\/h4>\n

\u91c7\u7528<\/span>vector<char>\u4f5c\u4e3a\u5e95\u5c42\u5bb9\u5668<\/span><\/span>，\u539f\u56e0\u5982\u4e0b：<\/span><\/p>\n

  • \u8fde\u7eed\u5185\u5b58\u7279\u6027：\u4fdd\u8bc1\u6570\u636e\u5b58\u50a8\u7684\u8fde\u7eed\u6027，\u63d0\u9ad8\u8bbf\u95ee\u6548\u7387<\/span><\/li>\n
  • \u81ea\u52a8\u6269\u5bb9\u673a\u5236：\u5f53\u5b58\u50a8\u7a7a\u95f4\u4e0d\u8db3\u65f6\u81ea\u52a8\u6269\u5c55<\/span><\/li>\n
  • \u7075\u6d3b\u5927\u5c0f\u8c03\u6574：\u53ef\u6839\u636e\u5b9e\u9645\u9700\u6c42\u7cbe\u786e\u63a7\u5236\u7f13\u51b2\u533a\u5927\u5c0f<\/span><\/li>\n

    \u4e0d\u4f7f\u7528string\u7684\u539f\u56e0：<\/span><\/p>\n

    \u5b57\u7b26\u4e32\u7ec8\u6b62\u95ee\u9898：string\u4ee5'\\\\0'\u4f5c\u4e3a\u7ed3\u675f\u6807\u5fd7，\u5728\u5904\u7406\u7f51\u7edc\u6570\u636e\u65f6\u53ef\u80fd：<\/span><\/p>\n

  • \u7f51\u7edc\u6570\u636e\u4e2d\u5e38\u5305\u542b\u4e8c\u8fdb\u5236\u6570\u636e（\u5982\u6587\u4ef6\u4f20\u8f93）<\/span><\/li>\n
  • \u4e8c\u8fdb\u5236\u6570\u636e\u53ef\u80fd\u5305\u542b\u591a\u4e2a'\\\\0'\u5b57\u7b26<\/span>，\u4f7f\u7528string\u4f1a\u5bfc\u81f4\u6570\u636e\u622a\u65ad，\u9020\u6210\u4fe1\u606f\u4e22\u5931<\/span><\/li>\n

    \u6027\u80fd\u8003\u8651：vector<char>\u66f4\u9002\u5408\u9891\u7e41\u7684\u6570\u636e\u5199\u5165\u548c\u8bfb\u53d6\u64cd\u4f5c<\/span><\/p>\n

    \u5185\u5b58\u7ba1\u7406：vector\u63d0\u4f9b\u66f4\u76f4\u63a5\u7684\u5185\u5b58\u8bbf\u95ee\u548c\u63a7\u5236<\/span><\/p>\n

    \u8981\u7d20\u4e0e\u64cd\u4f5c<\/span><\/h4>\n

    \u8981\u7d20<\/span><\/p>\n

    1.\u9ed8\u8ba4\u7684\u7a7a\u95f4\u5927\u5c0f<\/span><\/p>\n

    2.\u5f53\u524d\u7684\u8bfb\u53d6\u6570\u636e\u4f4d\u7f6e—-read<\/span><\/p>\n

    3.\u5f53\u524d\u7684\u5199\u5165\u6570\u636e\u4f4d\u7f6e—-write<\/span><\/p>\n

    \u64cd\u4f5c：<\/span><\/p>\n

    1.\u5199\u5165\u6570\u636e：<\/span><\/p>\n

    \u5f53\u524d\u5199\u5165\u4f4d\u7f6e\u6307\u5411\u54ea\u91cc，\u5c31\u4ece\u54ea\u91cc\u5f00\u59cb\u5199\u5165 \u5982\u679c\u540e\u7eed\u5269\u4f59\u7a7a\u95f2\u7a7a\u95f4\u4e0d\u591f\u4e86<\/span><\/p>\n

    \u8003\u8651\u6574\u4f53\u7f13\u51b2\u533a\u7a7a\u95f2\u7a7a\u95f4\u662f\u5426\u8db3\u591f（\u56e0\u4e3a\u8bfb\u4f4d\u7f6e\u4e5f\u4f1a\u5411\u540e\u504f\u79fb，\u524d\u8fb9\u6709\u53ef\u80fd\u4f1a\u6709\u7a7a\u95f2\u7a7a\u95f4） <\/span><\/p>\n

      \n
    • \u8db3\u591f：\u5c06\u6570\u636e\u79fb\u52a8\u5230\u8d77\u59cb\u4f4d\u7f6e\u5373\u53ef <\/span><\/li>\n
    • \u4e0d\u591f：\u6269\u5bb9，\u4ece\u5f53\u524d\u5199\u4f4d\u7f6e\u5f00\u59cb\u6269\u5bb9\u8db3\u591f\u5927\u5c0f \u6570\u636e\u4e00\u65e6\u5199\u5165\u6210\u529f，\u5f53\u524d\u5199\u4f4d\u7f6e，\u5c31\u8981\u5411\u540e\u504f\u79fb<\/span><\/li>\n<\/ul>\n

      \u5f53\u4e0b\u4e00\u6b21\u6240\u8981\u5199\u5165\u7684\u6570\u636e\u5927\u5c0f\u8d85\u8fc7\u603b\u7684\u5269\u4f59\u7a7a\u95f4=read\u524d+write\u540e（\u6ce8\u610f，read\u6307\u9488\u4e4b\u524d\u7684\u7a7a\u95f4\u4e5f\u5305\u542b\u5728\u5185，\u4e5f\u5c31\u662f\u8bfb\u8fc7\u7684\u533a\u57df）\u65f6\u5c31\u6269\u5bb9，\u5426\u5219\u5c31\u79fb\u52a8\u5df2\u5199\u672a\u8bfb\u7684\u5185\u5bb9\u81f3\u5f00\u59cb，read\u6307\u9488\u79fb\u52a8\u81f3\u5f00\u59cb，\u518d\u7ee7\u7eed\u5199\u5165\u3002\u6570\u636e\u4e00\u65e6\u5199\u5165\u6210\u529f，\u5199\u4f4d\u7f6e\u5411\u540e\u504f\u79fb\u3002<\/span><\/p>\n

      \u5982\u56fe\u6240\u793a：<\/span><\/p>\n

      \"\"<\/p>\n

      \"\"<\/p>\n

      \u5c06\u5185\u5bb9\u5199\u5165：\u00a0<\/span><\/p>\n

      \"\"<\/p>\n

      \u73b0\u5728\u8fd8\u6709\u5185\u5bb9\u8981\u5199\u5165，\u56e0\u4e3a\u7f13\u51b2\u533a\u5df2\u7ecf\u6ca1\u6709\u7a7a\u4f59\u4f4d\u7f6e，\u5c31\u5bf9vector\u8fdb\u884c\u6269\u5bb9：<\/span><\/p>\n<\/p>\n

      \"\"<\/p>\n

      2.\u8bfb\u53d6\u6570\u636e<\/span><\/p>\n

      \u5f53\u524d\u7684\u8bfb\u53d6\u4f4d\u7f6e\u6307\u5411\u54ea\u91cc，\u5c31\u4ece\u54ea\u91cc\u5f00\u59cb\u8bfb\u53d6，\u524d\u63d0\u662f\u6709\u6570\u636e\u53ef\u8bfb <\/span><\/p>\n

      \u53ef\u8bfb\u6570\u636e\u5927\u5c0f：\u5f53\u524d\u5199\u5165\u4f4d\u7f6e，\u51cf\u53bb\u5f53\u524d\u8bfb\u53d6\u4f4d\u7f6e<\/span><\/p>\n

      1.2 Buffer\u7f13\u51b2\u533a\u7c7b\u529f\u80fd\u63a5\u53e3\u8bbe\u8ba1<\/span><\/h3>\n

      #define BUFFER_DEFAULT_SIZE 1024<\/p>\n

      class Buffer {
      \nprivate:
      \n std::vector<char> _buffer;
      \n \/*\u662f\u4e00\u4e2a\u76f8\u5bf9\u504f\u79fb\u91cf，\u800c\u4e0d\u662f\u7edd\u5bf9\u5730\u5740*\/
      \n uint64_t _read_idx; \/\/ \u76f8\u5bf9\u8bfb\u504f\u79fb\u91cf
      \n uint64_t _writer_idx; \/\/ \u76f8\u5bf9\u5199\u504f\u79fb\u91cf<\/p>\n

      public:
      \n \/\/ \u6784\u9020\u51fd\u6570
      \n Buffer() : _read_idx(0), _writer_idx(0), _buffer(BUFFER_DEFAULT_SIZE) {}<\/p>\n

      \/\/ \u83b7\u53d6\u5f53\u524d\u5199\u4f4d\u7f6e\u5730\u5740：_Buffer\u7684\u7a7a\u95f4\u8d77\u59cb\u5730\u5740，\u52a0\u4e0a\u5199\u504f\u79fb\u91cf
      \n void* WritePosition();
      \n \/\/ \u83b7\u53d6\u5f53\u524d\u8bfb\u4f4d\u7f6e\u5730\u5740
      \n void* ReadPosition();
      \n \/\/ \u83b7\u53d6\u524d\u6cbf\u7a7a\u95f2\u7a7a\u95f4\u5927\u5c0f
      \n uint64_t HeadIdleSize();
      \n \/\/ \u83b7\u53d6\u540e\u6cbf\u7a7a\u95f2\u7a7a\u95f4\u5927\u5c0f
      \n uint64_t TailIdleSize();
      \n \/\/ \u83b7\u53d6\u53ef\u8bfb\u6570\u636e\u5927\u5c0f
      \n uint64_t ReadableSize();
      \n \/\/ \u5c06\u8bfb\u504f\u79fb\u5411\u540e\u79fb\u52a8\u6307\u5b9a\u957f\u5ea6
      \n void MoveReadOffset(uint64_t len);
      \n \/\/ \u5c06\u5199\u504f\u79fb\u5411\u540e\u79fb\u52a8\u6307\u5b9a\u957f\u5ea6
      \n void MoveWriteOffset(uint64_t len);
      \n \/\/ \u786e\u4fdd\u53ef\u5199\u7a7a\u95f4\u8db3\u591f（\u79fb\u52a8+\u6269\u5bb9）
      \n void EnsureWriteSpace(uint64_t len);
      \n \/\/ \u5199\u5165\u6570\u636e
      \n void Write(void* data, uint64_t len);
      \n \/\/ \u8bfb\u53d6\u6570\u636e
      \n void Read(void* buf, uint64_t len);
      \n \/\/ \u6e05\u7406\u529f\u80fd：\u8bfb\u5199\u504f\u79fb\u5f520
      \n void Clear();
      \n}; <\/p>\n

      1.3\u00a0Buffer\u7f13\u51b2\u533a\u7c7b\u63a5\u53e3\u5b9e\u73b0<\/span><\/h3>\n

      #include <iostream>
      \n#include <vector>
      \n#include <cassert>
      \n#include <cstring>
      \n#include <string><\/p>\n

      #define BUFFER_DEFAULT_SIZE 1024<\/p>\n

      class Buffer {
      \nprivate:
      \n std::vector<char> _buffer;
      \n \/*\u662f\u4e00\u4e2a\u76f8\u5bf9\u504f\u79fb\u91cf，\u800c\u4e0d\u662f\u7edd\u5bf9\u5730\u5740*\/
      \n uint64_t _read_idx; \/\/ \u76f8\u5bf9\u8bfb\u504f\u79fb\u91cf
      \n uint64_t _writer_idx; \/\/ \u76f8\u5bf9\u5199\u504f\u79fb\u91cf<\/p>\n

      public:
      \n \/\/ \u6784\u9020\u51fd\u6570
      \n Buffer() : _read_idx(0), _writer_idx(0), _buffer(BUFFER_DEFAULT_SIZE) {}
      \n char* Begin() {
      \n \/\/ &*_buffer.begin(): \u8fed\u4ee3\u5668buffer.begin()\u6307\u5411\u8d77\u59cb\u5143\u7d20，*buffer.begin()
      \n \/\/ &*_buffer.begin()—>\u5f97\u5230\u7b2c0\u4e2a\u5143\u7d20\u7684\u7a7a\u95f4\u5730\u5740
      \n return &*_buffer.begin();
      \n }
      \n \/\/ \u83b7\u53d6\u5f53\u524d\u5199\u4f4d\u7f6e\u5730\u5740：_Buffer\u7684\u7a7a\u95f4\u8d77\u59cb\u5730\u5740，\u52a0\u4e0a\u5199\u504f\u79fb\u91cf
      \n char* WritePosition() {
      \n \/\/ \u5c06\u83b7\u53d6_buffer\u8d77\u59cb\u5730\u5740\u7684\u8fc7\u7a0b\u7528begin()\u5c01\u88c5\u8d77\u6765
      \n return Begin() + _writer_idx;
      \n }
      \n \/\/ \u83b7\u53d6\u5f53\u524d\u8bfb\u4f4d\u7f6e\u5730\u5740
      \n char* ReadPosition() { return Begin() + _read_idx; }
      \n \/\/ \u83b7\u53d6\u524d\u6cbf\u7a7a\u95f2\u7a7a\u95f4\u5927\u5c0f：\u8bfb\u504f\u79fb
      \n uint64_t HeadIdleSize() { return _read_idx; }
      \n \/\/ \u83b7\u53d6\u540e\u6cbf\u7a7a\u95f2\u7a7a\u95f4\u5927\u5c0f：\u603b\u4f53\u7a7a\u95f4\u5927\u5c0f-\u5199\u504f\u79fb
      \n uint64_t TailIdleSize() { return _buffer.size() – _writer_idx; }
      \n \/\/ \u83b7\u53d6\u53ef\u5199\u7a7a\u95f4\u5927\u5c0f
      \n uint64_t WritableSize() { return HeadIdleSize() + TailIdleSize(); }
      \n \/\/ \u83b7\u53d6\u53ef\u8bfb\u6570\u636e\u5927\u5c0f：\u5199\u504f\u79fb-\u8bfb\u504f\u79fb
      \n uint64_t ReadableSize() { return _writer_idx – _read_idx; }
      \n \/\/ \u5c06\u8bfb\u504f\u79fb\u5411\u540e\u79fb\u52a8\u6307\u5b9a\u957f\u5ea6
      \n void MoveReadOffset(uint64_t len) {
      \n \/\/ \u5411\u540e\u79fb\u52a8\u7684\u5927\u5c0f，\u5fc5\u987b\u5c0f\u4e8e\u53ef\u8bfb\u6570\u636e\u5927\u5c0f
      \n assert(len <= ReadableSize());
      \n _read_idx += len;
      \n }
      \n \/\/ \u5c06\u5199\u504f\u79fb\u5411\u540e\u79fb\u52a8\u6307\u5b9a\u957f\u5ea6
      \n void MoveWriteOffset(uint64_t len) {
      \n \/\/ \u5411\u540e\u79fb\u52a8\u7684\u5927\u5c0f，\u5fc5\u987b\u5c0f\u4e8e\u5f53\u524d\u540e\u8fb9\u7684\u7a7a\u95f2\u7a7a\u95f4\u5927\u5c0f
      \n assert(len <= TailIdleSize());<\/p>\n

      _writer_idx += len;
      \n }
      \n \/\/ \u786e\u4fdd\u53ef\u5199\u7a7a\u95f4\u8db3\u591f（\u79fb\u52a8+\u6269\u5bb9）
      \n void EnsureWriteSpace(uint64_t len) {
      \n if (TailIdleSize() >= len) {
      \n return;
      \n }
      \n \/\/ \u672b\u5c3e\u7a7a\u95f2\u7a7a\u95f4\u4e0d\u591f：\u5219\u5224\u65ad\u52a0\u4e0a\u524d\u6cbf\u7a7a\u95f2\u7a7a\u95f4\u5927\u5c0f\u662f\u5426\u8db3\u591f，\u8db3\u591f\u5c31\u632a\u52a8\u6570\u636e
      \n if (HeadIdleSize() + TailIdleSize() >= len) {
      \n \/\/ \u79fb\u52a8\u6570\u636e\u81f3\u8d77\u59cb\u4f4d\u7f6e\u5148\u4fdd\u5b58\u597d\u5f53\u524d\u6570\u636e\u5927\u5c0f
      \n uint64_t rsz = ReadableSize(); \/\/ \u5148\u4fdd\u5b58\u597d\u5f53\u524d\u6570\u636e\u5927\u5c0f
      \n \/\/ \u5c06\u53ef\u8bfb\u6570\u636e\u62f7\u8d1d\u5230\u8d77\u59cb\u4f4d\u7f6e
      \n \/\/ \u5c06\u53ef\u8bfb\u6570\u636e\u62f7\u8d1d\u5230\u8d77\u59cb\u4f4d\u7f6e，\u6ce8\u610f\u7c7b\u578b\u8f6c\u6362
      \n std::copy(ReadPosition(), ReadPosition() + rsz, Begin());
      \n _read_idx = 0;
      \n _writer_idx = rsz;
      \n } else {
      \n \/\/ \u603b\u4f53\u7a7a\u95f4\u4e0d\u591f，\u9700\u8981\u6269\u5bb9，\u4e0d\u79fb\u52a8\u6570\u636e，\u76f4\u63a5\u7ed9\u5199\u504f\u79fb\u4e4b\u540e\u6269\u5bb9\u8db3\u591f\u7a7a\u95f4：
      \n _buffer.resize(_writer_idx + len);
      \n }
      \n }
      \n \/\/ \u5199\u5165\u6570\u636e
      \n void Write(const void* data, uint64_t len) {
      \n \/\/ 1.\u786e\u4fdd\u6709\u8db3\u591f\u7684\u7a7a\u95f4，2.\u62f7\u8d1d\u6570\u636e\u8fdb\u53bb
      \n EnsureWriteSpace(len);
      \n const char* d = (const char*)data;<\/p>\n

      std::copy((char*)data, (char*)(d + len), WritePosition());
      \n }<\/p>\n

      void WriteAndPush(const void* data, uint64_t len) {
      \n Write(data, len);
      \n MoveWriteOffset(len);
      \n }<\/p>\n

      void WriteString(const std::string& data) {
      \n return Write(data.c_str(), data.size());
      \n }
      \n void WriteStringAndPush(const std::string& data) {
      \n WriteString(data);
      \n \/\/ std::cout << WritePosition() << std::endl;\/\/\u6d4b\u8bd5
      \n MoveWriteOffset(data.size());
      \n \/\/ std::cout << ReadableSize() << std::endl;\/\/\u6d4b\u8bd5
      \n }
      \n void WriteBuffer(Buffer& data) {
      \n return Write(data.ReadPosition(), data.ReadableSize());
      \n }
      \n void WriteBufferAndPush(Buffer& data) {
      \n WriteBuffer(data);
      \n MoveWriteOffset(data.ReadableSize());
      \n }
      \n \/\/ \u8bfb\u53d6\u6570\u636e
      \n void Read(void* buf, uint64_t len) {
      \n assert(len <= ReadableSize());
      \n \/\/ std::cout << "——" << std::endl;\/\/ \u6d4b\u8bd5
      \n \/\/ std::cout << ReadPosition() << std::endl; \/\/ \u6d4b\u8bd5
      \n std::copy(ReadPosition(), ReadPosition() + len, (char*)buf);
      \n \/\/ std::cout << buf << std::endl; \/\/ \u6d4b\u8bd5
      \n }<\/p>\n

      \/\/ \u8bfb\u5e76\u5f39\u51fa
      \n void ReadAndPop(void* buf, uint64_t len) {
      \n Read(buf, len);
      \n MoveReadOffset(len);
      \n }<\/p>\n

      std::string ReadAsString(uint64_t len) {
      \n assert(len <= ReadableSize());
      \n std::string str;
      \n str.resize(len);
      \n Read(&str[0], len);
      \n \/\/ std::cout << "******" << std::endl; \/\/ \u6d4b\u8bd5
      \n \/\/ std::cout << str << std::endl; \/\/ \u6d4b\u8bd5
      \n return str;
      \n }<\/p>\n

      std::string ReadAsStringAndPop(uint64_t len) {
      \n assert(len <= ReadableSize());
      \n std::string str = ReadAsString(len);
      \n MoveReadOffset(len);
      \n \/\/ std::cout << "++++++" << std::endl; \/\/ \u6d4b\u8bd5
      \n \/\/ std::cout << str << std::endl; \/\/ \u6d4b\u8bd5
      \n return str;
      \n }<\/p>\n

      \/\/ \u5bfb\u627e\u6362\u884c\u5b57\u7b26
      \n char* FindCRLF() {
      \n char* res = (char*)memchr(ReadPosition(), '\\\\n', ReadableSize());
      \n return res;
      \n }<\/p>\n

      \/\/ \u83b7\u53d6\u4e00\u884c\u6570\u636e
      \n \/\/ \u901a\u5e38\u83b7\u53d6\u4e00\u884c\u6570\u636e，\u8fd9\u79cd\u60c5\u51b5\u9488\u5bf9\u7684\u662f
      \n std::string GetLine() {
      \n char* pos = FindCRLF();
      \n if (pos == nullptr) {
      \n return "";
      \n }
      \n \/\/+1\u662f\u4e3a\u4e86\u628a\u6362\u884c\u5b57\u7b26\u4e5f\u53d6\u51fa
      \n return ReadAsString(pos – ReadPosition() + 1);
      \n }
      \n std::string GetLineAndPop() {
      \n std::string str = GetLine();
      \n MoveReadOffset(str.size());
      \n return str;
      \n }
      \n \/\/ \u6e05\u7406\u529f\u80fd：\u8bfb\u5199\u504f\u79fb\u5f520
      \n void Clear() {
      \n _read_idx = 0;
      \n _writer_idx = 0;
      \n }
      \n}; <\/p>\n

      1.4\u00a0Buffer\u7f13\u51b2\u533a\u7c7b\u7f16\u8bd1\u4e0e\u6d4b\u8bd5<\/span><\/h3>\n

      #include "server.hpp"<\/p>\n

      \/\/ \u6d4b\u8bd51
      \n\/\/ int main()
      \n\/\/ {
      \n\/\/ Buffer buf;<\/p>\n

      \/\/ \/\/ \u529f\u80fd\u6d4b\u8bd5
      \n\/\/ std::string str = "hello";
      \n\/\/ buf.WriteStringAndPush(str);<\/p>\n

      \/\/ Buffer buf1;
      \n\/\/ buf1.WriteBufferAndPush(buf); \/\/ \u62f7\u8d1d\u6784\u9020\u51fd\u6570\u4e5f\u53ef\u4ee5<\/p>\n

      \/\/ std::string tmp;
      \n\/\/ \/\/ tmp = buf.ReadAsStringAndPop(buf.ReadableSize());
      \n\/\/ tmp = buf1.ReadAsStringAndPop(buf1.ReadableSize());<\/p>\n

      \/\/ std::cout << tmp << std::endl; \/\/hello
      \n\/\/ std::cout << buf.ReadableSize() << std::endl;\/\/5
      \n\/\/ std::cout << buf1.ReadableSize() << std::endl;\/\/0<\/p>\n

      \/\/ return 0;
      \n\/\/ }<\/p>\n

      \/\/ \u6d4b\u8bd5\u6269\u5bb9\u548c\u83b7\u53d6\u884c
      \nint main() {
      \n Buffer buf;
      \n for (int i = 0; i < 300; i++) {
      \n std::string str = "hello" + std::to_string(i) + '\\\\n';
      \n buf.WriteStringAndPush(str);
      \n }
      \n \/\/ \u6d4b\u8bd5\u83b7\u53d6\u884c<\/p>\n

      while (buf.ReadableSize() > 0) {
      \n std::string line = buf.GetLineAndPop();
      \n std::cout << line << std::endl;
      \n }
      \n \/\/ \u6d4b\u8bd5\u6269\u5bb9
      \n \/\/ std::string tmp;
      \n \/\/ tmp = buf.ReadAsStringAndPop(buf.ReadableSize());
      \n \/\/ std::cout << tmp << std::endl;<\/p>\n

      return 0;
      \n} <\/p>\n

      \u4e8c\u3001\u65e5\u5fd7\u5b8f\u7684\u5b9e\u73b0<\/span><\/h2>\n<\/p>\n

      \u65e5\u5fd7\u7f16\u5199\u53ef\u4ee5\u770b\u6211\u7684\u8fd9\u7bc7\u535a\u5ba2，\u6709\u8be6\u7ec6\u7684\u89e3\u8bf4<\/span><\/p>\n

      2.1 \u6211\u4eec\u8fd9\u91cc\u4ee5\u4e0a\u9762\u7684\u6d4b\u8bd5\u4e3a\u4f8b，\u6dfb\u52a0\u5b8f：<\/span><\/h3>\n

      #define LOG(format, …) \\\\
      \n fprintf(stdout, "[%s:%d] " format, __FILE__, __LINE__, __VA_ARGS__)<\/p>\n

      \"\"<\/p>\n

      \u8f93\u51fa：<\/span><\/p>\n

      \"\"<\/p>\n

      2.2 \u6ca1\u6709\u4e0d\u5b9a\u53c2\u6570：##__VA_ARGS__<\/span><\/h3>\n

      #define LOG(format, …) \\\\
      \n fprintf(stdout, "[%s:%d] " format, __FILE__, __LINE__, ##__VA_ARGS__)<\/p>\n

      \u8f93\u51fa：<\/span><\/p>\n

      \"\"<\/p>\n

      2.3 \u6dfb\u52a0\u65f6\u95f4：#include<ctime><\/span><\/h3>\n

      #define LOG(format, …) \\\\
      \n do \\\\
      \n { \\\\
      \n time_t t = time(nullptr); \\\\
      \n struct tm *ltm = localtime(&t); \\\\
      \n char tmp[32] = {0}; \\\\
      \n strftime(tmp, 31, "%H:%M:%S", ltm); \\\\
      \n fprintf(stdout, "[%s:%s:%d] " format "\\\\n", tmp, __FILE__, __LINE__, ##__VA_ARGS__); \\\\
      \n } while (0) <\/p>\n

      \u6548\u679c：<\/span><\/p>\n<\/p>\n

      [15:52:09:main.cc:53] hi, pupu<\/p>\n

      2.4 \u6dfb\u52a0\u7b49\u7ea7<\/span><\/h3>\n

      \u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u65e5\u5fd7\u6253\u5370\u5b8f，\u53ef\u4ee5\u63a7\u5236\u65e5\u5fd7\u7b49\u7ea7<\/span><\/p>\n

      #define INF 0
      \n#define DBG 1
      \n#define ERR 2
      \n#define LOG_LEVEL DBG \/\/ \u63a7\u5236： \u8c03\u6574\u6253\u5370\u7b49\u7ea7\u81f3INF\u7684\u7b49\u7ea7\u624d\u80fd\u6253\u5370<\/p>\n

      #define LOG(LEVEL, format, …) \\\\
      \n do { \\\\
      \n if (LEVEL < LOG_LEVEL) \\\\
      \n break; \\\\
      \n time_t t = time(nullptr); \\\\
      \n struct tm* ltm = localtime(&t); \\\\
      \n char tmp[32] = {0}; \\\\
      \n strftime(tmp, 31, "%H:%M:%S", ltm); \\\\
      \n fprintf(stdout, "[%s:%s:%d] " format "\\\\n", tmp, __FILE__, __LINE__, \\\\
      \n ##__VA_ARGS__); \\\\
      \n } while (0)<\/p>\n

      #define INF_LOG(format, …) LOG(INF, format, ##__VA_ARGS__)
      \n#define DBG_LOG(format, …) LOG(DBG, format, ##__VA_ARGS__)
      \n#define ERR_LOG(format, …) LOG(ERR, format, ##__VA_ARGS__) <\/p>\n

      \u6d4b\u8bd5：\u56e0\u4e3a\u6211\u8bbe\u7f6e\u7684\u6253\u5370\u7b49\u7ea7\u9700\u8981INF\u4ee5\u4e0a，\u6240\u4ee5\u65e0\u8f93\u51fa<\/span><\/p>\n

      INF_LOG("hi, pupu");<\/p>\n

      \u4e09\u3001Socket\u5957\u63a5\u5b57\u6a21\u5757<\/span>\u00a0<\/h2>\n

      Socket\u5957\u63a5\u5b57\u7684\u8be6\u7ec6\u89e3\u8bf4\u53ef\u4ee5\u770b\u6211\u7684\u8fd9\u51e0\u7bc7\u6587\u7ae0：<\/span><\/p>\n

      UDP\u5957\u63a5\u5b57\u7f16\u7a0b\u00a0TCP\u5957\u63a5\u5b57\u7f16\u7a0b\u00a0\u5c01\u88c5\u597d\u7684Socket.hpp，\u6784\u5efa\u7f51\u7edc\u7248\u8ba1\u7b97\u5668<\/p>\n

      \u529f\u80fd：\u5bf9\u5957\u63a5\u5b57\u7684\u64cd\u4f5c\u8fdb\u884c\u5c01\u88c5<\/span><\/p>\n

      \u610f\u4e49：\u7a0b\u5e8f\u4e2d\u5bf9\u4e8e\u5957\u63a5\u5b57\u7684\u5404\u9879\u64cd\u4f5c\u66f4\u52a0\u7b80\u4fbf<\/span><\/p>\n

      3.1 Socket\u5957\u63a5\u5b57\u7c7b\u529f\u80fd\u8bbe\u8ba1<\/span><\/h3>\n<\/p>\n

      #define Max_LISTEN 1024
      \nclass Socket {
      \nprivate:
      \n int _sockfd;<\/p>\n

      public:
      \n \/\/ \u5957\u63a5\u5b57\u57fa\u7840\u64cd\u4f5c<\/p>\n

      Socket();
      \n Socket(int fd);
      \n ~Socket();
      \n \/\/ \u521b\u5efa\u5957\u63a5\u5b57
      \n bool Create();
      \n \/\/ \u7ed1\u5b9a\u5730\u5740\u4fe1\u606f
      \n bool Bind(const std::string& ip, uint16_t port);
      \n \/\/ \u5f00\u59cb\u76d1\u542c
      \n bool Listen(int backlog);
      \n \/\/ \u5411\u670d\u52a1\u5668\u53d1\u8d77\u8fde\u63a5
      \n bool Connect(const std::string& ip, uint16_t port);
      \n \/\/ \u83b7\u53d6\u65b0\u8fde\u63a5
      \n int Accept(); \/\/ \u8fd4\u56de\u6587\u4ef6\u63cf\u8ff0\u7b26
      \n \/\/ \u63a5\u6536\u6570\u636e
      \n ssize_t
      \n Recv(void* buf, size_t len,
      \n int flag = 0); \/\/ ssize_t：\u6709\u7b26\u53f7\u7684\u957f\u6574\u578b, flag = 0：\u9ed8\u8ba4\u963b\u585e\u64cd\u4f5c
      \n \/\/ \u53d1\u9001\u6570\u636e
      \n ssize_t Send(void* buf, size_t len, int flag = 0);
      \n \/\/ \u5173\u95ed\u5957\u63a5\u5b57
      \n void Close();<\/p>\n

      \/\/ \u5957\u63a5\u5b57\u5176\u4f59\u91cd\u8981\u64cd\u4f5c
      \n \/\/ \u521b\u5efa\u4e00\u4e2a\u670d\u52a1\u7aef（\u76d1\u542c）\u8fde\u63a5
      \n bool CreateServer(uint16_t port,
      \n const std::string& ip =
      \n "0.0.0.0"); \/\/ \u4e3b\u673a\u4e00\u822c\u4f1a\u7ed1\u5b9a\u5f53\u524d\u4e3b\u673a\u4e0a\u6240\u6709\u7684\u7f51\u5361
      \n \/\/ \u521b\u5efa\u4e00\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5
      \n bool CreateClient(uint16_t port, const std::string& ip);
      \n \/\/ \u8bbe\u7f6e\u5957\u63a5\u5b57\u9009\u9879–\u5f00\u542f\u5730\u5740\u7aef\u53e3\u91cd\u7528
      \n void ReuseAddress();
      \n \/\/ \u8bbe\u7f6e\u5957\u63a5\u5b57\u963b\u585e\u5c5e\u6027–\u8bbe\u7f6e\u4e3a\u975e\u963b\u585e（\u56e0\u4e3a\u9ed8\u8ba4\u662f\u963b\u585e）
      \n void NonBlock();
      \n}; <\/p>\n

      3.2 Socket\u5957\u63a5\u5b57\u7c7b\u63a5\u53e3\u5b9e\u73b0<\/span><\/h3>\n

      #include <sys\/socket.h>
      \n#include <sys\/types.h><\/p>\n

      #include <arpa\/inet.h> \/\/\u5b57\u8282\u5e8f\u8f6c\u6362
      \n#include <fcntl.h>
      \n#include <netinet\/in.h>
      \n#include <unistd.h><\/p>\n

      #define Max_LISTEN 1024
      \nclass Socket {
      \nprivate:
      \n int _sockfd;<\/p>\n

      public:
      \n Socket() : _sockfd(-1) {}
      \n Socket(int fd) : _sockfd(fd) {}
      \n ~Socket() { Close(); }
      \n int Fd() { return _sockfd; }
      \n \/\/ \u521b\u5efa\u5957\u63a5\u5b57
      \n bool Create() {
      \n \/\/ int socket(int domain ,int type, int protocol);
      \n _sockfd = socket(AF_INET, SOCK_STREAM, 0);
      \n if (_sockfd < 0) {
      \n ERR_LOG("CREATE SOCKET FAILED…");
      \n return false;
      \n }
      \n return true;
      \n }
      \n \/\/ \u7ed1\u5b9a\u5730\u5740\u4fe1\u606f
      \n bool Bind(const std::string& ip, uint16_t port) {
      \n struct sockaddr_in addr;
      \n addr.sin_family = AF_INET;
      \n addr.sin_port = htons(port);
      \n addr.sin_addr.s_addr = inet_addr(ip.c_str());
      \n socklen_t len = sizeof(struct sockaddr_in);
      \n \/\/ int bind(int sockfd, struct sockaddr *addr, socklen_t len);
      \n int ret = bind(_sockfd, (struct sockaddr*)&addr, len);
      \n if (ret < 0) {
      \n ERR_LOG("BIND ADDRESS FAILED…");
      \n return false;
      \n }
      \n return true;
      \n }
      \n \/\/ \u5f00\u59cb\u76d1\u542c
      \n bool Listen(int backlog) {
      \n \/\/ int listen(int socket, int backlog); \/\/
      \n \/\/ backlog:\u8bbe\u7f6e\u4ee5\u4e0b\u540c\u4e00\u65f6\u95f4\u6700\u5927\u5e76\u53d1\u8fde\u63a5\u6570
      \n int ret = listen(_sockfd, backlog);
      \n if (ret < 0) {
      \n ERR_LOG("SOCKET LISTEN FAILED…");
      \n return false;
      \n }
      \n return true;
      \n }
      \n \/\/ \u5411\u670d\u52a1\u5668\u53d1\u8d77\u8fde\u63a5
      \n bool Connect(const std::string& ip, uint16_t port) {
      \n struct sockaddr_in addr;
      \n addr.sin_family = AF_INET;
      \n addr.sin_port = htons(port);
      \n addr.sin_addr.s_addr = inet_addr(ip.c_str());
      \n socklen_t len = sizeof(struct sockaddr_in);
      \n \/\/ int connect(int sockfd, struct sockaddr *addr, socklen_t len);
      \n int ret = connect(_sockfd, (struct sockaddr*)&addr, len);
      \n if (ret < 0) {
      \n ERR_LOG("CONNECT ADDRESS FAILED…");
      \n return false;
      \n }
      \n return true;
      \n }
      \n \/\/ \u83b7\u53d6\u65b0\u8fde\u63a5: \u8fd4\u56de\u6587\u4ef6\u63cf\u8ff0\u7b26
      \n int Accept() {
      \n \/\/ int accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
      \n int newfd = accept(_sockfd, nullptr, nullptr);
      \n if (newfd < 0) {
      \n ERR_LOG("SOCKET ACCEPT FAILED…");
      \n return -1;
      \n }
      \n return newfd;
      \n }
      \n \/\/ \u63a5\u6536\u6570\u636e
      \n \/\/ ssize_t：\u6709\u7b26\u53f7\u7684\u957f\u6574\u578b, flag = 0：\u9ed8\u8ba4\u963b\u585e\u64cd\u4f5c
      \n ssize_t Recv(void* buf, size_t len, int flag = 0) {
      \n \/\/ ssize_t recv(int sockfd, void *buf, size_t len, int flags);
      \n ssize_t ret = recv(_sockfd, buf, len, flag);
      \n if (ret < 0) {
      \n \/\/ EAGAIN:
      \n \/\/ \u5f53\u524dsocket\u7684\u63a5\u6536\u7f13\u51b2\u533a\u4e2d\u6ca1\u6709\u6570\u636e\u4e86，\u5728\u975e\u963b\u585e\u7684\u60c5\u51b5\u4e0b\u624d\u4f1a\u6709\u8fd9\u4e2a\u9519\u8bef
      \n \/\/ EINTR: \u5f53\u524dsocket\u7684\u963b\u585e\u7b49\u5f85，\u88ab\u4fe1\u53f7\u6253\u65ad\u4e86，
      \n if (errno == EAGAIN || errno == EINTR) {
      \n ERR_LOG("SOCKET RECV NULL…");<\/p>\n

      return 0; \/\/ \u8868\u793a\u8fd9\u6b21\u6ca1\u6709\u63a5\u6536\u5230\u6570\u636e
      \n }
      \n ERR_LOG("SOCKET RECV FAILED…");
      \n return -1;
      \n }
      \n \/\/ INF_LOG("%ld", ret);
      \n return ret; \/\/ \u5b9e\u9645\u63a5\u6536\u5230\u7684\u6570\u636e\u957f\u5ea6
      \n }<\/p>\n

      \/\/ \u975e\u963b\u585e\u63a5\u6536\u6570\u636e
      \n ssize_t NonBlockRecv(void* buf, size_t len) {
      \n return Recv(buf, len,
      \n MSG_DONTWAIT); \/\/ MSG_DONTWAIT: \u8868\u793a\u5f53\u524d\u63a5\u6536\u4e3a\u975e\u963b\u585e
      \n }<\/p>\n

      \/\/ \u53d1\u9001\u6570\u636e
      \n ssize_t Send(const void* buf, size_t len, int flag = 0) {
      \n \/\/ ssize_t send(int sockfd, const void *buf, size_t len, int flags);
      \n ssize_t ret = send(_sockfd, buf, len, flag);
      \n if (ret < 0) {
      \n if (errno == EAGAIN || errno == EINTR) {
      \n ERR_LOG("SOCKET RECV NULL…");<\/p>\n

      return 0; \/\/ \u8868\u793a\u8fd9\u6b21\u6ca1\u6709\u63a5\u6536\u5230\u6570\u636e
      \n }
      \n ERR_LOG("SOCKET SEND FAILED…");
      \n return -1;
      \n }
      \n \/\/ ret:
      \n \/\/ \u5b9e\u9645\u53d1\u9001\u7684\u6570\u636e\u957f\u5ea6，\u6709\u53ef\u80fdbuf\u4e2d\u6570\u636e\u5e76\u6ca1\u6709\u53d1\u9001\u5b8c，\u5916\u90e8\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u53d1\u9001\u957f\u5ea6\u6765\u51b3\u5b9a\u5982\u4f55\u7ee7\u7eed\u5904\u7406
      \n \/\/ std::cout << ret << std::endl;
      \n return ret;
      \n }
      \n \/\/ \u975e\u963b\u585e\u53d1\u9001\u6570\u636e
      \n ssize_t NonBlockSend(void* buf, size_t len) {
      \n return Send(buf, len,
      \n MSG_DONTWAIT); \/\/ MSG_DONTWAIT: \u8868\u793a\u5f53\u524d\u53d1\u9001\u4e3a\u975e\u963b\u585e
      \n }<\/p>\n

      \/\/ \u5173\u95ed\u5957\u63a5\u5b57
      \n void Close() {
      \n if (_sockfd != -1) {
      \n close(_sockfd);
      \n _sockfd = -1;
      \n }
      \n }
      \n \/\/ \u5957\u63a5\u5b57\u5176\u4f59\u91cd\u8981\u64cd\u4f5c
      \n \/\/ \u521b\u5efa\u4e00\u4e2a\u670d\u52a1\u7aef（\u76d1\u542c）\u8fde\u63a5, \u4e3b\u673a\u4e00\u822c\u4f1a\u7ed1\u5b9a\u5f53\u524d\u4e3b\u673a\u4e0a\u6240\u6709\u7684\u7f51\u5361
      \n bool CreateServer(uint16_t port, const std::string& ip = "0.0.0.0",
      \n bool block_flag = false) {
      \n \/\/ 1.\u521b\u5efa\u5957\u63a5\u5b57 2.\u7ed1\u5b9a\u5730\u5740 3.\u5f00\u59cb\u76d1\u542c 4.\u8bbe\u7f6e\u975e\u963b\u585e 5.\u542f\u52a8\u5730\u5740\u91cd\u7528
      \n if (Create() == false)
      \n return false;
      \n if (Bind(ip, port) == false)
      \n return false;
      \n if (Listen(1024) == false)
      \n return false;
      \n if (block_flag)
      \n NonBlock();
      \n ReuseAddress();
      \n return true;
      \n }
      \n \/\/ \u521b\u5efa\u4e00\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5
      \n bool CreateClient(uint16_t port, const std::string& ip) {
      \n \/\/ 1.\u521b\u5efa\u5957\u63a5\u5b57 2.\u76f4\u63a5\u8fde\u63a5\u670d\u52a1\u5668 3.\u5f00\u59cb\u76d1\u542c 4.\u8bbe\u7f6e\u975e\u963b\u585e 5.\u542f\u52a8\u5730\u5740\u91cd\u7528
      \n if (Create() == false) {
      \n DBG_LOG("SOCKET CREATECLIENT FAILED…");
      \n return false;
      \n }<\/p>\n

      if (Connect(ip, port) == false)
      \n return false;
      \n INF_LOG("SOCKET CREATECLIENT SUCCESS…");<\/p>\n

      return true;
      \n }
      \n \/\/ \u8bbe\u7f6e\u5957\u63a5\u5b57\u9009\u9879–\u5f00\u542f\u5730\u5740\u7aef\u53e3\u91cd\u7528
      \n void ReuseAddress() {
      \n \/\/ int setsockopt(int sockfd, int level, int optname,
      \n \/\/ const void *optval, socklen_t optlen);<\/p>\n

      int val = 1;
      \n \/\/ \u5730\u5740\u91cd\u7528
      \n setsockopt(_sockfd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(int));
      \n val = 1;
      \n \/\/ \u7aef\u53e3\u91cd\u7528
      \n setsockopt(_sockfd, SOL_SOCKET, SO_REUSEPORT, &val, sizeof(int));
      \n }
      \n \/\/ \u8bbe\u7f6e\u5957\u63a5\u5b57\u963b\u585e\u5c5e\u6027–\u8bbe\u7f6e\u4e3a\u975e\u963b\u585e（\u56e0\u4e3a\u9ed8\u8ba4\u662f\u963b\u585e）
      \n void NonBlock() {
      \n \/\/ int fcntl(int fd, int cmd, … \/* arg *\/ );
      \n int flag = fcntl(_sockfd, F_GETFL, 0);
      \n fcntl(_sockfd, F_SETFL, flag | O_NONBLOCK);
      \n }
      \n}; <\/p>\n

      3.3 Socket\u5957\u63a5\u5b57\u7c7b\u7f16\u8bd1\u6d4b\u8bd5<\/span><\/h3>\n

      tcp_srv.cc<\/span><\/p>\n

      #include "..\/source\/server.hpp"<\/p>\n

      int main() {
      \n Socket lst_sock;
      \n lst_sock.CreateServer(8500);
      \n while (1) {
      \n int newfd = lst_sock.Accept();
      \n if (newfd < 0) {
      \n continue;
      \n }
      \n Socket cli_sock(newfd);
      \n char buffer[1024] = {0};
      \n int ret = cli_sock.Recv(buffer, 1023);
      \n if (ret < 0) {
      \n cli_sock.Close();
      \n continue;
      \n }
      \n cli_sock.Send(buffer, ret);
      \n cli_sock.Close();
      \n }<\/p>\n

      lst_sock.Close();<\/p>\n

      return 0;
      \n} <\/p>\n

      tcp_cli.cc<\/span><\/p>\n

      #include "..\/source\/server.hpp"<\/p>\n

      int main() {
      \n Socket cli_sock;
      \n cli_sock.CreateClient(8500, "127.0.0.1");
      \n std::string str = "hi pupu";
      \n cli_sock.Send((void*)str.c_str(), str.size());
      \n char buf[1024] = {0};
      \n cli_sock.Recv(buf, 1023);
      \n DBG_LOG("%s", buf);
      \n return 0;
      \n} <\/p>\n

      \u56db\u3001Channel\u6a21\u5757<\/span><\/h2>\n

      \u76ee\u7684：\u5bf9\u63cf\u8ff0\u7b26\u7684\u76d1\u63a7\u4e8b\u4ef6\u7ba1\u7406<\/span><\/p>\n

      \u529f\u80fd：\u5bf9\u4e8e\u4e00\u4e2a\u63cf\u8ff0\u7b26\u8fdb\u884c\u76d1\u63a7\u4e8b\u4ef6\u7ba1\u7406<\/span><\/p>\n

      \u610f\u4e49：\u5bf9\u4e8e\u63cf\u8ff0\u7b26\u7684\u76d1\u63a7\u4e8b\u4ef6\u5728\u7528\u6237\u6001\u66f4\u5bb9\u6613\u7ef4\u62a4，\u4ee5\u53ca\u89e6\u53d1\u4e8b\u4ef6\u540e\u7684\u64cd\u4f5c\u6d41\u7a0b\u66f4\u52a0\u7684\u6e05\u6670<\/span><\/p>\n

      4.1 Channel\u4e8b\u4ef6\u7ba1\u7406\u7c7b\u529f\u80fd\u8bbe\u8ba1<\/span><\/h3>\n

      a\u3001\u5bf9\u76d1\u63a7\u4e8b\u4ef6\u7684\u7ba1\u7406<\/span><\/p>\n

      \u662f\u5426\u6b63\u5728\u76d1\u6d4b\u63cf\u8ff0\u7b26\u7684\u8bfb\u72b6\u6001 <\/span><\/p>\n

      \u662f\u5426\u6b63\u5728\u76d1\u6d4b\u63cf\u8ff0\u7b26\u7684\u5199\u72b6\u6001<\/span><\/p>\n

      \u5f00\u59cb\u76d1\u6d4b\u63cf\u8ff0\u7b26\u7684\u8bfb\u4e8b\u4ef6 <\/span><\/p>\n

      \u5f00\u59cb\u76d1\u6d4b\u63cf\u8ff0\u7b26\u7684\u5199\u4e8b\u4ef6<\/span><\/p>\n

      \u505c\u6b62\u76d1\u6d4b\u8bfb\u4e8b\u4ef6 <\/span><\/p>\n

      \u505c\u6b62\u76d1\u6d4b\u5199\u4e8b\u4ef6 <\/span><\/p>\n

      \u505c\u6b62\u6240\u6709\u4e8b\u4ef6\u76d1\u6d4b<\/span><\/p>\n

      b\u3001\u5bf9\u4e8b\u4ef6\u89e6\u53d1\u540e\u7684\u5904\u7406<\/span><\/p>\n

      1.\u9700\u8981\u5904\u7406\u7684\u4e8b\u4ef6：\u53ef\u8bfb\u3001\u53ef\u5199\u3001\u6302\u65ad\u3001\u9519\u8bef\u3001\u4efb\u610f<\/span><\/p>\n

      2.\u4e8b\u4ef6\u5904\u7406\u7684\u56de\u8c03\u51fd\u6570<\/span><\/p>\n

      \u5c06\u4f7f\u7528epoll\u8fdb\u884c\u4e8b\u4ef6\u76d1\u63a7，epoll\u7684\u8be6\u89e3：<\/span><\/p>\n

      \u591a\u8def\u8f6c\u63a5\u8be6\u89e3\u00a0\u00a0 \u00a0 epoll\u7684\u673a\u5236\u4e0e\u5b9e\u73b0\u539f\u7406\u00a0epoll\u8be6\u7ec6\u8bb2\u89e3\u3001ET\u6a21\u5f0f\u3001\u57fa\u4e8eReactor\u8bbe\u8ba1\u6a21\u5f0f\u5b9e\u73b0\u9ad8\u5e76\u53d1\u7f51\u7edc\u670d\u52a1\u5668<\/p>\n

      \u6210\u5458<\/span><\/p>\n

      EPOLLIN \u53ef\u8bfb EPOLLOUT \u53ef\u5199 EPOLLRDHUP \u8fde\u63a5\u65ad\u5f00 EPOLLPRI \u4f18\u5148\u6570\u636e EPOLLERR \u51fa\u9519\u4e86 EPOLLHUP \u6302\u65ad \u800c\u4ee5\u4e0a\u7684\u4e8b\u4ef6\u90fd\u662f\u4e00\u4e2a\u6570\u503c uint32_t \u8fdb\u884c\u4fdd\u5b58<\/span><\/p>\n

      \u8981\u8fdb\u884c\u4e8b\u4ef6\u7ba1\u7406，\u5c31\u9700\u8981\u6709\u4e00\u4e2auint32_t \u7c7b\u578b\u7684\u6210\u5458\u4fdd\u5b58\u5f53\u524d\u9700\u8981\u76d1\u63a7\u7684\u4e8b\u4ef6<\/span><\/p>\n

      \u4e8b\u4ef6\u5904\u7406\u8fd9\u91cc，\u56e0\u4e3a\u6709\u4e94\u79cd\u4e8b\u4ef6\u9700\u8981\u5904\u7406，\u5c31\u9700\u8981\u4e94\u4e2a\u56de\u8c03\u51fd\u6570<\/span><\/p>\n

      class Channel {
      \nprivate:
      \n int _fd;
      \n uint32_t _events; \/\/ \u5f53\u524d\u9700\u8981\u76d1\u63a7\u7684\u4e8b\u4ef6
      \n uint32_t _revents; \/\/ \u5f53\u524d\u8fde\u63a5\u89e6\u53d1\u7684\u4e8b\u4ef6
      \n using EventCallBack = std::function<void()>;
      \n EventCallBack _read_callback; \/\/ \u53ef\u8bfb\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
      \n EventCallBack _write_callback; \/\/ \u53ef\u5199\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
      \n EventCallBack _error_callback; \/\/ \u9519\u8bef\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
      \n EventCallBack _close_callback; \/\/ \u8fde\u63a5\u65ad\u5f00\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
      \n EventCallBack _anyevent_callback; \/\/ \u4efb\u610f\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
      \npublic:
      \n Channel();
      \n \/\/ \u8fdb\u884c\u4e8b\u4ef6\u76d1\u63a7\u4e4b\u540e，fd\u5c31\u7eea\u4e86\u7684\u4e8b\u4ef6，
      \n \/\/ EventLoop\u5c31\u4f1a\u901a\u8fc7\u8fd9\u4e2a\u63a5\u53e3\u628a\u5b9e\u9645\u5c31\u7eea\u7684\u4e8b\u4ef6\u8bbe\u7f6e\u8fdb\u6765，\u6839\u636erevents\u5224\u65ad\u4ec0\u4e48\u4e8b\u4ef6\u5c31\u7eea
      \n void SetREvent(uint32_t events){}
      \n \/\/ \u8bbe\u7f6e\u4e8b\u4ef6\u56de\u8c03，\u4f60\u4f20\u51fd\u6570，\u6211\u56de\u8c03
      \n void SetReadCallBack(const EventCallBack& cb);
      \n void SetWriteCallBack(const EventCallBack& cb);
      \n void SetErrorCallBack(const EventCallBack& cb);
      \n void SetCloseCallBack(const EventCallBack& cb);
      \n void SetAnyEventCallBack(const EventCallBack& cb);
      \n \/\/ \u5f53\u524d\u662f\u5426\u76d1\u63a7\u53ef\u8bfb
      \n bool Readable();
      \n \/\/ \u5f53\u524d\u662f\u5426\u76d1\u63a7\u53ef\u5199
      \n bool Writable();
      \n \/\/ \u542f\u52a8\u8bfb\u4e8b\u4ef6\u76d1\u63a7 –>\u6302\u5230EventLoop\u4e0a
      \n void EnableRead();
      \n \/\/ \u542f\u52a8\u5199\u4e8b\u4ef6\u76d1\u63a7
      \n void EnableWrite();
      \n \/\/ \u89e3\u9664\u53ef\u8bfb\u4e8b\u4ef6\u76d1\u63a7
      \n void DisableRead();
      \n \/\/ \u89e3\u9664\u53ef\u5199\u4e8b\u4ef6\u76d1\u63a7
      \n void DisableWrite();
      \n \/\/ \u89e3\u9664\u6240\u6709\u4e8b\u4ef6\u76d1\u63a7
      \n void DisableAll();
      \n \/\/ \u79fb\u9664\u76d1\u63a7：\u4eceepoll\u7ea2\u9ed1\u6811\u4e0a\u76f4\u63a5\u79fb\u9664，\u4eceEventLoop\u4e0a\u79fb\u9664
      \n void Remove();
      \n \/\/ \u4e8b\u4ef6\u5904\u7406：\u4e00\u65e6\u8fde\u63a5\u89e6\u53d1\u4e86\u4e8b\u4ef6，\u5c31\u8c03\u7528\u8fd9\u4e2a\u51fd\u6570，EventLoop\u6a21\u5757\u53ea\u7ba1\u76d1\u63a7\u89e6\u53d1\u4f55\u79cd\u4e8b\u4ef6,\u8c03\u7528Channel\u5904\u7406\u51fd\u6570
      \n \/\/ \u5982\u4f55\u5904\u7406\u7531Channel\u51b3\u5b9a
      \n void HandleEvent();
      \n}; <\/p>\n

      4.2 Channel\u4e8b\u4ef6\u7ba1\u7406\u7c7b\u63a5\u53e3\u5b9e\u73b0<\/span><\/h3>\n

      #include <functional>
      \n#include <sys\/epoll.h>
      \nclass Channel {
      \nprivate:
      \n int _fd;
      \n uint32_t _events; \/\/ \u5f53\u524d\u9700\u8981\u76d1\u63a7\u7684\u4e8b\u4ef6
      \n uint32_t _revents; \/\/ \u5f53\u524d\u8fde\u63a5\u89e6\u53d1\u7684\u4e8b\u4ef6
      \n using EventCallBack = std::function<void()>;
      \n EventCallBack _read_callback; \/\/ \u53ef\u8bfb\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
      \n EventCallBack _write_callback; \/\/ \u53ef\u5199\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
      \n EventCallBack _error_callback; \/\/ \u9519\u8bef\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
      \n EventCallBack _close_callback; \/\/ \u8fde\u63a5\u65ad\u5f00\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
      \n EventCallBack _anyevent_callback; \/\/ \u4efb\u610f\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
      \npublic:
      \n Channel(int fd) : _fd(fd), _events(0), _revents(0) {}
      \n int Fd() { return _fd; }
      \n uint32_t Events() { return _events; } \/\/ \u83b7\u53d6\u60f3\u8981\u76d1\u63a7\u7684\u4e8b\u4ef6<\/p>\n

      \/\/ \u8fdb\u884c\u4e8b\u4ef6\u76d1\u63a7\u4e4b\u540e，fd\u5c31\u7eea\u4e86\u7684\u4e8b\u4ef6，
      \n \/\/ EventLoop\u5c31\u4f1a\u901a\u8fc7\u8fd9\u4e2a\u63a5\u53e3\u628a\u5b9e\u9645\u5c31\u7eea\u7684\u4e8b\u4ef6\u8bbe\u7f6e\u8fdb\u6765，\u6839\u636erevents\u5224\u65ad\u4ec0\u4e48\u4e8b\u4ef6\u5c31\u7eea
      \n void SetREvent(uint32_t events) { _revents = events; }
      \n \/\/ \u8bbe\u7f6e\u4e8b\u4ef6\u56de\u8c03，\u4f60\u4f20\u51fd\u6570，\u6211\u56de\u8c03
      \n void SetReadCallBack(const EventCallBack& cb) { _read_callback = cb; }
      \n void SetWriteCallBack(const EventCallBack& cb) { _write_callback = cb; }
      \n void SetErrorCallBack(const EventCallBack& cb) { _error_callback = cb; }
      \n void SetCloseCallBack(const EventCallBack& cb) { _close_callback = cb; }
      \n void SetAnyEventCallBack(const EventCallBack& cb) { _anyevent_callback = cb;}
      \n \/\/ \u662f\u5426\u6b63\u5728\u76d1\u63a7\u63cf\u8ff0\u7b26\u7684\u8bfb\u4e8b\u4ef6
      \n bool Readable() { return _events & EPOLLIN; }
      \n \/\/ \u662f\u5426\u6b63\u5728\u76d1\u63a7\u63cf\u8ff0\u7b26\u7684\u5199\u4e8b\u4ef6
      \n bool Writable() { return _events & EPOLLOUT; }
      \n \/\/ \u542f\u52a8\u8bfb\u4e8b\u4ef6\u63cf\u8ff0\u7b26\u7684\u76d1\u63a7 –>\u6302\u5230EventLoop\u4e0a
      \n void EnableRead() {
      \n _events |= EPOLLIN; \/\/ \u540e\u8fb9\u4f1a\u6dfb\u52a0\u5230EventLoop\u7684\u4e8b\u4ef6\u76d1\u63a7\u4e2d
      \n }<\/p>\n

      \/\/ \u542f\u52a8\u5199\u4e8b\u4ef6\u63cf\u8ff0\u7b26\u7684\u76d1\u63a7
      \n void EnableWrite() {
      \n _events |= EPOLLOUT; \/\/ \u540e\u8fb9\u4f1a\u6dfb\u52a0\u5230EventLoop\u7684\u4e8b\u4ef6\u76d1\u63a7\u4e2d
      \n }
      \n \/\/ \u89e3\u9664\u53ef\u8bfb\u4e8b\u4ef6\u76d1\u63a7
      \n void DisableRead() {
      \n _events &= ~EPOLLIN; \/\/ \u540e\u8fb9\u4f1a\u4fee\u6539\u5230EventLoop\u7684\u4e8b\u4ef6\u76d1\u63a7\u4e2d
      \n }
      \n \/\/ \u89e3\u9664\u53ef\u5199\u4e8b\u4ef6\u76d1\u63a7
      \n void DisableWrite() {
      \n _events &= ~EPOLLOUT; \/\/ \u540e\u8fb9\u4f1a\u4fee\u6539\u5230EventLoop\u7684\u4e8b\u4ef6\u76d1\u63a7\u4e2d
      \n }
      \n \/\/ \u89e3\u9664\u6240\u6709\u4e8b\u4ef6\u76d1\u63a7
      \n void DisableAll() { _events = 0; }
      \n \/\/ \u79fb\u9664\u76d1\u63a7：\u4eceepoll\u7ea2\u9ed1\u6811\u4e0a\u76f4\u63a5\u79fb\u9664，\u4eceEventLoop\u4e0a\u79fb\u9664
      \n void Remove() {
      \n \/\/ \u540e\u8fb9\u4f1a\u8c03\u7528EventLoop\u63a5\u53e3\u6765\u79fb\u9664\u76d1\u63a7
      \n }
      \n \/\/ \u4e8b\u4ef6\u5904\u7406：\u4e00\u65e6\u8fde\u63a5\u89e6\u53d1\u4e86\u4e8b\u4ef6，\u5c31\u8c03\u7528\u8fd9\u4e2a\u51fd\u6570，EventLoop\u6a21\u5757\u53ea\u7ba1\u76d1\u63a7\u89e6\u53d1\u4f55\u79cd\u4e8b\u4ef6,\u8c03\u7528Channel\u5904\u7406\u51fd\u6570
      \n \/\/ \u5982\u4f55\u5904\u7406\u7531Channel\u51b3\u5b9a
      \n void HandleEvent() {
      \n if ((_revents & EPOLLIN) ||
      \n (_revents & EPOLLRDHUP || _revents & (EPOLLPRI))) {
      \n if (_read_callback)
      \n _read_callback();
      \n \/\/ \u65e0\u8bba\u4ec0\u4e48\u4e8b\u4ef6，\u90fd\u8981\u8c03\u7528\u7684\u56de\u8c03\u51fd\u6570
      \n if (_anyevent_callback)
      \n _anyevent_callback();
      \n }
      \n \/*\u6709\u53ef\u80fd\u4f1a\u51fa\u73b0\u91ca\u653e\u8fde\u63a5\u7684\u64cd\u4f5c，\u4e00\u6b21\u53ea\u5904\u7406\u4e00\u4e2a*\/
      \n if ((_revents & EPOLLOUT)) {
      \n if (_write_callback)
      \n _write_callback();
      \n if (_anyevent_callback)
      \n _anyevent_callback(); \/\/ \u653e\u5230\u4e8b\u4ef6\u5904\u7406\u5b8c\u6bd5\u4e4b\u540e\u8c03\u7528，\u7528\u4e8e\u5237\u65b0\u6d3b\u8dc3\u5ea6
      \n } else if ((_revents & EPOLLERR)) {
      \n if (_anyevent_callback)
      \n _anyevent_callback(); \/\/ \u51fa\u9519\u4f1a\u91ca\u653e\u8fde\u63a5，\u653e\u5230\u4e8b\u4ef6\u5904\u7406\u4e4b\u524d\u8c03\u7528\u4efb\u610f\u4e8b\u4ef6\u56de\u8c03
      \n if (_error_callback)
      \n _error_callback();
      \n } else if ((_revents & EPOLLHUP)) {
      \n if (_anyevent_callback)
      \n _anyevent_callback();
      \n if (_close_callback)
      \n _close_callback();
      \n }
      \n }
      \n}; <\/p>\n

      \u5728\u4e0b\u4e2a\u6a21\u5757\u8fdb\u884c\u8054\u5408poller\u6d4b\u8bd5<\/span><\/p>\n

      \n

      \u4e94\u3001Poller\u6a21\u5757<\/span><\/h2>\n

      5.1 Poller\u63cf\u8ff0\u7b26\u76d1\u63a7\u7c7b\u529f\u80fd\u8bbe\u8ba1<\/span><\/h3>\n

      \u529f\u80fd：\u5bf9epoll\u8fdb\u884c\u5c01\u88c5，\u8ba9\u5bf9\u63cf\u8ff0\u7b26\u8fdb\u884c\u4e8b\u4ef6\u76d1\u63a7\u7684\u64cd\u4f5c\u66f4\u52a0\u7b80\u5355<\/span><\/p>\n

      \u610f\u4e49：\u901a\u8fc7epoll\u5b9e\u73b0\u5bf9\u63cf\u8ff0\u7b26\u7684IO\u4e8b\u4ef6\u76d1\u63a7<\/span><\/p>\n

    • \u6dfb\u52a0\/\u4fee\u6539 \u63cf\u8ff0\u7b26\u7684\u4e8b\u4ef6\u76d1\u63a7(\u4e0d\u5b58\u5728\u5219\u6dfb\u52a0，\u5b58\u5728\u5219\u4fee\u6539)<\/span><\/li>\n
    • \u79fb\u9664\u63cf\u8ff0\u7b26\u7684\u4e8b\u4ef6\u76d1\u63a7<\/span><\/li>\n

      \u5c01\u88c5\u601d\u60f3：<\/span><\/h4>\n

      \u5fc5\u987b\u62e5\u6709\u4e00\u4e2aepoll\u7684\u64cd\u4f5c\u53e5\u67c4\u3001<\/span><\/p>\n

        \n
      • \u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u00a0epoll \u5b9e\u4f8b，\u8fd4\u56de\u4e00\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26（_epfd），\u540e\u7eed\u6240\u6709\u64cd\u4f5c\u5747\u57fa\u4e8e\u6b64\u63cf\u8ff0\u7b26\u3002\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/li>\n<\/ul>\n

        \u62e5\u6709\u4e00\u4e2astruct epoll_event \u7ed3\u6784\u6570\u7ec4，\u76d1\u63a7\u65f6\u4fdd\u5b58\u6240\u6709\u7684\u6d3b\u8dc3\u4e8b\u4ef6<\/span><\/p>\n

        \u4f7f\u7528hash\u8868\u7ba1\u7406\u63cf\u8ff0\u7b26fd\u4e0e\u63cf\u8ff0\u7b26\u5bf9\u5e94\u7684\u4e8b\u4ef6\u7ba1\u7406Channel\u5bf9\u8c61：<\/span><\/p>\n

        \u00a0\u903b\u8f91\u6d41\u7a0b：\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span><\/p>\n

          \n
        • \n

          \u5f53\u63cf\u8ff0\u7b26\u5c31\u7eea\u4e86，\u901a\u8fc7\u63cf\u8ff0\u7b26\u5728hash\u8868\u4e2d\u627e\u5230\u5bf9\u5e94\u7684Channel（\u5f97\u5230\u4e86Channel\u624d\u80fd\u77e5\u9053\u4ec0\u4e48\u4e8b\u4ef6\u5982\u4f55\u5904\u7406）\u5f53\u63cf\u8ff0\u7b26\u5c31\u7eea\u4e86，\u8fd4\u56de\u5c31\u7eea\u63cf\u8ff0\u7b26\u5bf9\u5e94\u7684Channel<\/span><\/p>\n<\/li>\n

        • \n

          \u5bf9\u63cf\u8ff0\u7b26\u8fdb\u884c\u76d1\u63a7，\u901a\u8fc7Channel\u624d\u80fd\u77e5\u9053\u63cf\u8ff0\u7b26\u9700\u8981\u76d1\u63a7\u4ec0\u4e48\u4e8b\u4ef6<\/span><\/p>\n<\/li>\n<\/ul>\n

          5.2 Poller\u63cf\u8ff0\u7b26\u76d1\u63a7\u7c7b\u63a5\u53e3\u8bbe\u8ba1<\/span><\/h3>\n

          #define MAX_EPOLLEVENTS 1024
          \nclass Poller {
          \nprivate:
          \n int _epfd;
          \n struct epoll_event _evs[MAX_EPOLLEVENTS];
          \n std::unordered_map<int, Channel*> _channels;<\/p>\n

          private:
          \n \/\/ 1.\u5224\u65ad\u8981\u66f4\u65b0\u4e8b\u4ef6\u7684\u63cf\u8ff0\u7b26\u662f\u5426\u5b58\u5728,\u88ab\u76d1\u63a7
          \n bool HasChannel(Channel* channel) {}
          \n \/\/ 2.\u9488\u5bf9epoll\u76f4\u63a5\u64cd\u4f5c(\u6dfb\u52a0\u3001\u4fee\u6539\u3001\u79fb\u9664)
          \n void Update(Channel* channel, int op) {}<\/p>\n

          public:
          \n Poller();
          \n \/\/ 1.\u6dfb\u52a0\u6216\u66f4\u65b0\u63cf\u8ff0\u7b26\u6240\u76d1\u63a7\u7684\u4e8b\u4ef6
          \n void UpdateEvent(Channel* channel);
          \n \/\/ 2.\u79fb\u9664\u63cf\u8ff0\u7b26\u7684\u76d1\u63a7
          \n void RemoveEvent(Channel* channel);
          \n \/\/ 3.\u5f00\u59cb\u76d1\u63a7，\u83b7\u53d6\u5c31\u7eeaChannel，\u8fd4\u56de\u6d3b\u8dc3\u8fde\u63a5
          \n void Poll(std::vector<Channel> active);
          \n}; <\/p>\n

          5.3 Poller\u63cf\u8ff0\u7b26\u76d1\u63a7\u7c7b\u63a5\u53e3\u5b9e\u73b0\u4e0e\u7f16\u8bd1<\/span><\/h3>\n

          #include <unordered_map>
          \n#define MAX_EPOLLEVENTS 1024
          \nclass Poller {
          \nprivate:
          \n int _epfd;
          \n struct epoll_event _evs[MAX_EPOLLEVENTS];
          \n std::unordered_map<int, Channel*> _channels;<\/p>\n

          private:
          \n \/\/ 1.\u5224\u65ad\u8981\u66f4\u65b0\u4e8b\u4ef6\u7684\u63cf\u8ff0\u7b26\u662f\u5426\u5b58\u5728
          \n bool HasChannel(Channel* channel) {
          \n auto it = _channels.find(channel->Fd());
          \n if (it == _channels.end())
          \n return false;
          \n return true;
          \n }
          \n \/\/ 2.\u9488\u5bf9epoll\u76f4\u63a5\u64cd\u4f5c(\u6dfb\u52a0\u3001\u4fee\u6539\u3001\u79fb\u9664)
          \n void Update(Channel* channel, int op) {
          \n \/\/ int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event);
          \n int fd = channel->Fd();
          \n struct epoll_event ev;
          \n ev.data.fd = fd;
          \n ev.events = channel->Events();
          \n int ret = epoll_ctl(_epfd, op, fd, &ev);
          \n if (ret < 0) {
          \n ERR_LOG("EPOLLCTL FAILED…");
          \n }
          \n return;
          \n }<\/p>\n

          public:
          \n Poller() {
          \n _epfd = epoll_create(MAX_EPOLLEVENTS);
          \n if (_epfd < 0) {
          \n ERR_LOG("EPOLL CREATE FAILED…");
          \n abort(); \/\/ \u9000\u51fa\u7a0b\u5e8f
          \n }
          \n }
          \n \/\/ 1.\u6dfb\u52a0\u6216\u66f4\u65b0\u63cf\u8ff0\u7b26\u6240\u76d1\u63a7\u7684\u4e8b\u4ef6
          \n void UpdateEvent(Channel* channel) {
          \n bool ret = HasChannel(channel);
          \n if (ret == false) {
          \n \/\/\u4e0d\u5b58\u5728\u5219\u6dfb\u52a0
          \n _channels.insert(std::make_pair(channel->Fd(), channel));
          \n return Update(channel, EPOLL_CTL_ADD);
          \n }
          \n return Update(channel, EPOLL_CTL_MOD);
          \n }
          \n \/\/ 2.\u79fb\u9664\u63cf\u8ff0\u7b26\u7684\u76d1\u63a7
          \n void RemoveEvent(Channel* channel) {
          \n auto it = _channels.find(channel->Fd());
          \n if (it != _channels.end())
          \n _channels.erase(it);
          \n Update(channel, EPOLL_CTL_DEL);
          \n }
          \n \/\/ 3.\u5f00\u59cb\u76d1\u63a7，\u83b7\u53d6\u5c31\u7eeaChannel，\u8fd4\u56de\u6d3b\u8dc3\u8fde\u63a5
          \n void Poll(std::vector<Channel*>* active) {
          \n \/\/ int epoll_wait(int epfd, struct epoll_event *events,
          \n \/\/ int maxevents, int timeout);
          \n \/\/ \u963b\u585e\u76d1\u63a7，\u65e0\u5e8f\u8bbe\u7f6e\u8d85\u65f6\u65f6\u95f4, time_out = -1：\u963b\u585e\u76d1\u63a7
          \n int nfds = epoll_wait(_epfd, _evs, MAX_EPOLLEVENTS, -1);
          \n if (nfds < 0) {
          \n if (errno == EINTR) {
          \n return;
          \n }
          \n ERR_LOG("EPOLL WAIT ERROR: %s…\\\\n", strerror(errno));
          \n abort(); \/\/ \u9000\u51fa\u7a0b\u5e8f
          \n }
          \n for (int i = 0; i < nfds; i++) {
          \n auto it = _channels.find(_evs[i].data.fd);
          \n assert(it != _channels.end());
          \n it->second->SetREvent(_evs[i].events); \/\/ \u8bbe\u8ba1\u5b9e\u9645\u5c31\u7eea\u4e8b\u4ef6
          \n active->push_back(it->second);
          \n }
          \n }
          \n}; <\/p>\n

          5.4\u00a0Poller\u6a21\u5757\u4e0eChannel\u6a21\u5757\u6574\u5408<\/span><\/h3>\n

          \u5c06Poller\u6a21\u5757\u6574\u5408\u81f3Channel，\u4fee\u6539Channel<\/span><\/p>\n

          #include <functional>
          \n#include <sys\/epoll.h>
          \nclass Poller;
          \nclass Channel {
          \nprivate:
          \n int _fd;
          \n Poller* _poller;
          \n uint32_t _events; \/\/ \u5f53\u524d\u9700\u8981\u76d1\u63a7\u7684\u4e8b\u4ef6
          \n uint32_t _revents; \/\/ \u5f53\u524d\u8fde\u63a5\u89e6\u53d1\u7684\u4e8b\u4ef6
          \n using EventCallBack = std::function<void()>;
          \n EventCallBack _read_callback; \/\/ \u53ef\u8bfb\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
          \n EventCallBack _write_callback; \/\/ \u53ef\u5199\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
          \n EventCallBack _error_callback; \/\/ \u9519\u8bef\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
          \n EventCallBack _close_callback; \/\/ \u8fde\u63a5\u65ad\u5f00\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
          \n EventCallBack _anyevent_callback; \/\/ \u4efb\u610f\u4e8b\u4ef6\u88ab\u89e6\u53d1\u7684\u56de\u8c03\u51fd\u6570
          \npublic:
          \n Channel(Poller* poller, int fd)
          \n : _fd(fd), _events(0), _revents(0), _poller(poller) {}
          \n int Fd() { return _fd; }
          \n \/\/ \u8fdb\u884c\u4e8b\u4ef6\u76d1\u63a7\u4e4b\u540e，fd\u5c31\u7eea\u4e86\u7684\u4e8b\u4ef6，
          \n \/\/ EventLoop\u5c31\u4f1a\u901a\u8fc7\u8fd9\u4e2a\u63a5\u53e3\u628a\u5b9e\u9645\u5c31\u7eea\u7684\u4e8b\u4ef6\u8bbe\u7f6e\u8fdb\u6765，\u6839\u636erevents\u5224\u65ad\u4ec0\u4e48\u4e8b\u4ef6\u5c31\u7eea
          \n uint32_t Events() { return _events; } \/\/ \u83b7\u53d6\u60f3\u8981\u76d1\u63a7\u7684\u4e8b\u4ef6<\/p>\n

          void SetREvent(uint32_t events) { _revents = events; }
          \n \/\/ \u8bbe\u7f6e\u4e8b\u4ef6\u56de\u8c03，\u4f60\u4f20\u51fd\u6570，\u6211\u56de\u8c03
          \n void SetReadCallBack(const EventCallBack& cb) { _read_callback = cb; }
          \n void SetWriteCallBack(const EventCallBack& cb) { _write_callback = cb; }
          \n void SetErrorCallBack(const EventCallBack& cb) { _error_callback = cb; }
          \n void SetCloseCallBack(const EventCallBack& cb) { _close_callback = cb; }
          \n void SetAnyEventCallBack(const EventCallBack& cb) {
          \n _anyevent_callback = cb;
          \n }
          \n \/\/ \u5f53\u524d\u662f\u5426\u76d1\u63a7\u53ef\u8bfb
          \n bool Readable() { return _events & EPOLLIN; }
          \n \/\/ \u5f53\u524d\u662f\u5426\u76d1\u63a7\u53ef\u5199
          \n bool Writable() { return _events & EPOLLOUT; }
          \n \/\/ \u542f\u52a8\u8bfb\u4e8b\u4ef6\u76d1\u63a7 –>\u6302\u5230EventLoop\u4e0a
          \n void EnableRead() {
          \n _events |= EPOLLIN;
          \n Update();
          \n }<\/p>\n

          \/\/ \u542f\u52a8\u5199\u4e8b\u4ef6\u76d1\u63a7
          \n void EnableWrite() {
          \n _events |= EPOLLOUT;
          \n Update();
          \n }
          \n \/\/ \u89e3\u9664\u53ef\u8bfb\u4e8b\u4ef6\u76d1\u63a7
          \n void DisableRead() {
          \n _events &= ~EPOLLIN;
          \n Update();
          \n }
          \n \/\/ \u89e3\u9664\u53ef\u5199\u4e8b\u4ef6\u76d1\u63a7
          \n void DisableWrite() {
          \n _events &= ~EPOLLOUT;
          \n Update();
          \n }
          \n \/\/ \u89e3\u9664\u6240\u6709\u4e8b\u4ef6\u76d1\u63a7
          \n void DisableAll() {
          \n _events = 0;
          \n Update();
          \n }
          \n \/\/ \u8fd9\u91cc\u505a\u58f0\u660e，\u5728Poller\u7c7b\u4e4b\u540e\u5b9e\u73b0
          \n \/\/ \u79fb\u9664\u76d1\u63a7：\u4eceepoll\u7ea2\u9ed1\u6811\u4e0a\u76f4\u63a5\u79fb\u9664，\u4eceEventLoop\u4e0a\u79fb\u9664
          \n void Remove();
          \n \/\/ \u66f4\u65b0\u76d1\u63a7
          \n void Update();<\/p>\n

          \/\/ \u4e8b\u4ef6\u5904\u7406：\u4e00\u65e6\u8fde\u63a5\u89e6\u53d1\u4e86\u4e8b\u4ef6，\u5c31\u8c03\u7528\u8fd9\u4e2a\u51fd\u6570，EventLoop\u6a21\u5757\u53ea\u7ba1\u76d1\u63a7\u89e6\u53d1\u4f55\u79cd\u4e8b\u4ef6,\u8c03\u7528Channel\u5904\u7406\u51fd\u6570
          \n \/\/ \u5982\u4f55\u5904\u7406\u7531Channel\u51b3\u5b9a
          \n void HandleEvent() {
          \n if ((_revents & EPOLLIN) ||
          \n (_revents & EPOLLRDHUP || _revents & (EPOLLPRI))) {
          \n if (_read_callback)
          \n _read_callback();
          \n \/\/ \u65e0\u8bba\u4ec0\u4e48\u4e8b\u4ef6，\u90fd\u8981\u8c03\u7528\u7684\u56de\u8c03\u51fd\u6570
          \n if (_anyevent_callback)
          \n _anyevent_callback();
          \n }
          \n \/*\u6709\u53ef\u80fd\u4f1a\u51fa\u73b0\u91ca\u653e\u8fde\u63a5\u7684\u64cd\u4f5c，\u4e00\u6b21\u53ea\u5904\u7406\u4e00\u4e2a*\/
          \n if ((_revents & EPOLLOUT)) {
          \n if (_write_callback)
          \n _write_callback();
          \n if (_anyevent_callback)
          \n _anyevent_callback(); \/\/ \u653e\u5230\u4e8b\u4ef6\u5904\u7406\u5b8c\u6bd5\u4e4b\u540e\u8c03\u7528，\u7528\u4e8e\u5237\u65b0\u6d3b\u8dc3\u5ea6
          \n } else if ((_revents & EPOLLERR)) {
          \n if (_anyevent_callback)
          \n _anyevent_callback(); \/\/ \u51fa\u9519\u4f1a\u91ca\u653e\u8fde\u63a5，\u653e\u5230\u4e8b\u4ef6\u5904\u7406\u4e4b\u524d\u8c03\u7528\u4efb\u610f\u4e8b\u4ef6\u56de\u8c03
          \n if (_error_callback)
          \n _error_callback();
          \n } else if ((_revents & EPOLLHUP)) {
          \n if (_anyevent_callback)
          \n _anyevent_callback();
          \n if (_close_callback)
          \n _close_callback();
          \n }
          \n }
          \n};<\/p>\n

          \/\/\u653e\u7f6ePoller\u7c7b\u4e4b\u540e\u7684Update()\u548cRemove()
          \nvoid Channel::Remove() { return _poller->RemoveEvent(this); }
          \nvoid Channel::Update() { return _poller->UpdateEvent(this); } <\/p>\n

          5.5\u00a0Poller\u6a21\u5757\u4e0eChannel\u6a21\u5757\u8054\u5408\u8c03\u8bd5–\u662f\u4e0d\u5b8c\u6574\u7684<\/span><\/h3>\n

          \u6ce8\u610f：Poller\u6a21\u5757\u662fEventLoop\u7684\u4e00\u4e2a\u5b50\u6a21\u5757，EventLoop\u624d\u662f\u5b9e\u9645\u4e0a\u8fdb\u884c\u4e8b\u4ef6\u7ba1\u7406\u7684\u6a21\u5757<\/span><\/p>\n

          tcp_svr.cc<\/span><\/p>\n

          #include "..\/source\/server.hpp"<\/p>\n

          void HandleClose(Channel* channel) {
          \n std::cout << "close: " << channel->Fd() << std::endl;
          \n channel->Remove(); \/\/ \u79fb\u9664\u76d1\u63a7
          \n delete channel;
          \n}<\/p>\n

          void HandleRead(Channel* channel) {
          \n int fd = channel->Fd();
          \n char buf[1024] = {0};
          \n int ret = recv(fd, buf, 1023, 0);
          \n if (ret <= 0) {
          \n return HandleClose(channel); \/\/ \u5173\u95ed\u91ca\u653e
          \n }
          \n std::cout << buf << std::endl;
          \n channel->EnableWrite(); \/\/ \u542f\u52a8\u53ef\u5199\u4e8b\u4ef6\u76d1\u63a7
          \n}
          \nvoid HandleWrite(Channel* channel) {
          \n int fd = channel->Fd();
          \n const char* data = "\u5929\u6c14\u8fd8\u4e0d\u9519！";
          \n int ret = send(fd, data, strlen(data), 0);
          \n if (ret < 0) {
          \n return HandleClose(channel);
          \n }
          \n channel->DisableWrite(); \/\/ \u5173\u95ed\u5199\u76d1\u63a7
          \n}
          \nvoid HandleError(Channel* channel) { return HandleClose(channel); }
          \nvoid HandleEvent(Channel* channel) { std::cout << "\u6709\u4e86\u4e00\u4e2a\u4e8b\u4ef6" << std::endl; }<\/p>\n

          void Acceptor(Poller* poller, Channel* lst_channel) {
          \n int fd = lst_channel->Fd();
          \n int newfd = accept(fd, nullptr, nullptr);
          \n if (newfd < 0) {
          \n return;
          \n }
          \n Channel* channel = new Channel(poller, newfd);
          \n channel->SetReadCallBack(
          \n std::bind(HandleRead, channel)); \/\/ \u4e3a\u901a\u4fe1\u5957\u63a5\u5b57\u8bbe\u7f6e\u53ef\u8bfb\u4e8b\u4ef6\u7684\u56de\u8c03\u51fd\u6570
          \n channel->SetWriteCallBack(
          \n std::bind(HandleWrite, channel)); \/\/ \u53ef\u5199\u4e8b\u4ef6\u7684\u56de\u8c03\u51fd\u6570
          \n channel->SetCloseCallBack(
          \n std::bind(HandleClose, channel)); \/\/ \u5173\u95ed\u4e8b\u4ef6\u7684\u56de\u8c03\u51fd\u6570
          \n channel->SetAnyEventCallBack(
          \n std::bind(HandleEvent, channel)); \/\/ \u4efb\u4f55\u4e8b\u4ef6\u7684\u56de\u8c03\u51fd\u6570
          \n channel->EnableRead(); \/\/\u542f\u52a8\u8bfb\u4e8b\u4ef6\u76d1\u63a7
          \n}<\/p>\n

          int main() {
          \n Poller poller;
          \n Socket lst_sock;
          \n lst_sock.CreateServer(8500);
          \n \/\/ \u4e3a\u76d1\u542c\u5957\u63a5\u5b57，\u521b\u5efa\u4e00\u4e2aChannel，\u8fdb\u884c\u4e8b\u4ef6\u7684\u7ba1\u7406，\u4ee5\u53ca\u4e8b\u4ef6\u7684\u5904\u7406
          \n Channel channel(&poller, lst_sock.Fd());
          \n channel.SetReadCallBack(std::bind(
          \n Acceptor, &poller,
          \n &channel)); \/\/ \u56de\u8c03\u4e2d，\u83b7\u53d6\u65b0\u8fde\u63a5，\u4e3a\u65b0\u8fde\u63a5\u521b\u5efaChannel\u5e76\u6dfb\u52a0\u76d1\u63a7
          \n channel.EnableRead();
          \n while (1) {
          \n std::vector<Channel*> actives;
          \n poller.Poll(&actives);
          \n for (auto& a : actives) {
          \n a->HandleEvent();
          \n }
          \n }<\/p>\n

          lst_sock.Close();<\/p>\n

          return 0;
          \n} <\/p>\n

          tcp_cli.cc<\/span><\/p>\n

          \"\"<\/p>\n<\/p>\n

          \u8fd0\u884c\u7ed3\u679c：\u4e00\u6b21\u662f\u4e24\u4e2a\u4e8b\u4ef6（\u8bfb\u4e8b\u4ef6\u3001\u5199\u4e8b\u4ef6），\u5ba2\u6237\u7aef\u9000\u51fa，\u51fa\u73b0\u6bb5\u9519\u8bef<\/span><\/p>\n

          \"\"<\/p>\n

          \u4f7f\u7528gdb\u8fdb\u884c\u8c03\u8bd5：<\/span><\/p>\n

          \"\"<\/p>\n

          gdb .\/server —–> run —–> .\/client —–> \u5173\u95ed\u5ba2\u6237\u7aef ——-> bt（\u67e5\u770b\u51fd\u6570\u8c03\u7528\u6808）<\/span><\/p>\n

          \u6211\u4eec\u53d1\u73b0\u5230\u95ee\u9898：\u89e6\u53d1\u53ef\u8bfb\u548c\u53ef\u5199\u4e8b\u4ef6\u4e4b\u540e\u90fd\u6709\u53ef\u80fd\u91ca\u653e\u8fde\u63a5，\u56e0\u6b64\u9700\u8981\u5148\u89e6\u53d1\u4efb\u610f\u4e8b\u4ef6\u56de\u8c03\u51fd\u6570<\/span><\/p>\n

          \"\"<\/p>\n

          \u73b0\u5728\u6211\u4eec\u6839\u636e\u51e0\u5f20\u56fe\u548c\u89e3\u91ca\u6765\u7406\u89e3\u8fd9\u4e2a\u4ee3\u7801\u6240\u63cf\u8ff0\u7684<\/span><\/p>\n

          \u8fc7\u7a0b：<\/span><\/p>\n

          \"\"<\/p>\n<\/p>\n

        • \n

          \u76d1\u542cChannel：<\/span><\/p>\n

            \n
          • \n

            lst_channel：\u76d1\u542c\u5957\u63a5\u5b57\u7684Channel<\/span><\/p>\n<\/li>\n

          • \n

            SetReadCallBack(Acceptor)：\u8bbe\u7f6e\u8bfb\u4e8b\u4ef6\u56de\u8c03\u4e3aAcceptor\u51fd\u6570<\/span><\/p>\n<\/li>\n

          • \n

            EnableRead：\u542f\u7528\u8bfb\u4e8b\u4ef6\u76d1\u63a7<\/span><\/p>\n<\/li>\n

          • \n

            \u6dfb\u52a0\u5230Poller\u7684<fd, Channel>\u6620\u5c04\u4e2d<\/span><\/p>\n<\/li>\n

          • \n

            \u6700\u7ec8\u7531epoll\u76d1\u63a7\u00a0<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n

          • \n

            Acceptor\u56de\u8c03：<\/span><\/p>\n

              \n
            • \n

              \u5f53\u6709\u65b0\u8fde\u63a5\u65f6\u89e6\u53d1<\/span><\/p>\n<\/li>\n

            • \n

              \u901a\u8fc7accept()\u83b7\u53d6\u65b0\u8fde\u63a5<\/span><\/p>\n<\/li>\n

            • \n

              \u521b\u5efa\u65b0\u7684\u8fde\u63a5Channel（con_channel）<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n

            • \n

              \u8fde\u63a5Channel：<\/span><\/p>\n

                \n
              • \n

                \u4e3a\u6bcf\u4e2a\u65b0\u8fde\u63a5\u521b\u5efa\u5355\u72ec\u7684Channel<\/span><\/p>\n<\/li>\n

              • \n

                \u8bbe\u7f6e\u4e94\u79cd\u56de\u8c03\u51fd\u6570：<\/span><\/p>\n

                  \n
                • \n

                  setreadcallback\u00a0\u2192\u00a0HandleRead（\u8bfb\u53d6\u6570\u636e）<\/span><\/p>\n<\/li>\n

                • \n

                  setwritecallback\u00a0\u2192\u00a0HandleWrite（\u5199\u6570\u636e）<\/span><\/p>\n<\/li>\n

                • \n

                  setclosecallback\u00a0\u2192\u00a0HandleClose（\u5173\u95ed\u8fde\u63a5）<\/span><\/p>\n<\/li>\n

                • \n

                  seterrorcallback\u00a0\u2192\u00a0HandleError（\u9519\u8bef\u5904\u7406）<\/span><\/p>\n<\/li>\n

                • \n

                  seteventcallback\u00a0\u2192\u00a0HandleEvent（\u4efb\u610f\u4e8b\u4ef6）<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n

                • \n

                  \u6570\u636e\u6d41\u5904\u7406（\u5e95\u90e8）：<\/span><\/p>\n

                  \"\"<\/p>\n<\/li>\n

                    \n
                  • \n

                    HandleRead\u6d41\u7a0b：<\/span><\/p>\n

                  • \n

                    \u5f53\u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e\u65f6\u89e6\u53d1<\/span><\/p>\n<\/li>\n

                  • \n

                    \u8bfb\u53d6\u6570\u636e\u5e76\u6253\u5370：hi pupu<\/span><\/p>\n<\/li>\n

                  • \n

                    \u8c03\u7528EnableWrite()\u542f\u52a8\u5199\u76d1\u63a7<\/span><\/p>\n<\/li>\n<\/li>\n

                  • \n

                    HandleWrite\u6d41\u7a0b：<\/span><\/p>\n

                  • \n

                    epoll\u68c0\u6d4b\u5230\u53ef\u5199\u4e8b\u4ef6\u65f6\u89e6\u53d1<\/span><\/p>\n<\/li>\n

                  • \n

                    \u8c03\u7528send()\u53d1\u9001\u56de\u590d\u6570\u636e：\u201c\u5929\u6c14\u8fd8\u4e0d\u9519！\u201d<\/span><\/p>\n<\/li>\n

                  • \n

                    \u8c03\u7528DisableWrite()\u5173\u95ed\u5199\u76d1\u63a7<\/span><\/p>\n<\/li>\n<\/li>\n<\/ul>\n

                    \u6838\u5fc3\u7ec4\u4ef6\u4ea4\u4e92\u4e0e\u5de5\u4f5c\u6d41\u7a0b<\/span><\/h4>\n

                    \"\"<\/p>\n

                    \u6838\u5fc3\u5de5\u4f5c\u6d41\u7a0b<\/span><\/p>\n

                    \u521d\u59cb\u5316：\u521b\u5efa\u76d1\u542cChannel\u5e76\u8bbe\u7f6eAcceptor\u56de\u8c03<\/span><\/p>\n

                    \u4e8b\u4ef6\u76d1\u542c：\u901a\u8fc7epoll\u76d1\u63a7\u6240\u6709Channel<\/span><\/p>\n

                    \u8fde\u63a5\u5efa\u7acb：Acceptor\u63a5\u6536\u65b0\u8fde\u63a5\u5e76\u521b\u5efa\u901a\u4fe1Channel<\/span><\/p>\n

                    \u6570\u636e\u5904\u7406：<\/span><\/p>\n

                      \n
                    • \u8bfb\u4e8b\u4ef6 \u2192 \u8bfb\u53d6\u6570\u636e \u2192 \u542f\u7528\u5199\u76d1\u63a7<\/span><\/li>\n
                    • \u5199\u4e8b\u4ef6 \u2192 \u53d1\u9001\u54cd\u5e94 \u2192 \u7981\u7528\u5199\u76d1\u63a7<\/span><\/li>\n<\/ul>\n

                      \u8d44\u6e90\u7ba1\u7406：\u901a\u8fc7\u56de\u8c03\u5904\u7406\u5173\u95ed\u548c\u9519\u8bef<\/span><\/p>\n

                      \n

                      \u516d\u3001EventLoop\u6a21\u5757<\/span><\/h2>\n

                      Poller\u6a21\u5757\u662fEventLoop\u7684\u4e00\u4e2a\u5b50\u6a21\u5757，EventLoop\u624d\u662f\u5b9e\u9645\u4e0a\u8fdb\u884c\u4e8b\u4ef6\u7ba1\u7406\u7684\u6a21\u5757<\/span><\/p>\n

                      \"\"<\/p>\n

                      6.1 EventLoop\u6a21\u5757eventfd\u7684\u8ba4\u8bc6<\/span><\/h3>\n

                      eventfd：\u4e00\u79cd\u4e8b\u4ef6\u901a\u77e5\u673a\u5236，\u5934\u6587\u4ef6：<sys\/eventfd.h><\/span><\/p>\n

                      \u521b\u5efa\u6587\u4ef6\u63cf\u8ff0\u7b26\u7528\u4e8e\u4e8b\u4ef6\u901a\u77e5<\/span><\/p>\n

                      vs\u4fe1\u53f7：<\/span><\/p>\n

                        \n
                      • \u4fe1\u53f7\u662f\u9488\u5bf9\u8fdb\u7a0b\u8fdb\u884c\u4e8b\u4ef6\u901a\u77e5，\u4e8b\u4ef6\u5177\u4f53\u662f\u88ab\u54ea\u4e00\u4e2a\u7ebf\u7a0b\u6240\u5904\u7406\u4e0d\u4e00\u5b9a\u3002<\/span><\/li>\n<\/ul>\n

                        eventfd\u672c\u8d28\u5728\u5185\u6838\u91cc\u8fb9\u7ba1\u7406\u7684\u5c31\u662f\u4e00\u4e2a\u8ba1\u6570\u5668<\/span><\/p>\n

                          \n
                        • \u521b\u5efaeventfd\u5c31\u4f1a\u5728\u5185\u6838\u4e2d\u521b\u5efa\u4e00\u4e2a\u8ba1\u6570\u5668（\u7ed3\u6784\u4f53）<\/span><\/li>\n
                        • \u6bcf\u5f53\u5411eventfd\u4e2d\u5199\u5165\u4e00\u4e2a\u6570\u503c—\u7528\u4e8e\u8868\u793a\u4e8b\u4ef6\u7684\u901a\u77e5\u6b21\u6570，\u53ef\u4ee5\u4f7f\u7528read\u8fdb\u884c\u6570\u636e\u7684\u8bfb\u53d6，\u8bfb\u53d6\u5230\u7684\u6570\u636e\u5c31\u662f\u901a\u77e5\u7684\u6b21\u6570：\u5047\u8bbe\u6bcf\u6b21\u7ed9eventfd\u4e2d\u5199\u51651，\u5c31\u8868\u793a\u901a\u77e5\u4e86\u4e00\u6b21，\u8fde\u7eed\u5199\u4e86\u4e09\u6b21\u4e4b\u540e，\u518dread\u51fa\u6765\u7684\u6570\u5b57\u5c31\u662f3，\u8bfb\u53d6\u4e4b\u540e\u8ba1\u6570\u6e050\u3002<\/span><\/li>\n<\/ul>\n

                          \u7528\u5904：\u5728EventLoop\u6a21\u5757\u4e2d\u5b9e\u73b0\u7ebf\u7a0b\u95f4\u7684\u4e8b\u4ef6\u901a\u77e5\u673a\u5236<\/span><\/p>\n

                          \u7cfb\u7edf\u8c03\u7528<\/span><\/h4>\n

                          #include <sys\/eventfd.h><\/p>\n

                          int eventfd(unsigned int initval, int flags); <\/p>\n

                          \u53c2\u6570\u8bf4\u660e：<\/span><\/p>\n

                            \n
                          • initval：\u521d\u59cb\u8ba1\u6570\u5668\u503c<\/li>\n
                          • flags：\u63a7\u5236\u6807\u5fd7，\u5e38\u7528\u503c\u5305\u62ec：\n
                              \n
                            • EFD_CLOEXEC：\u6267\u884cexec\u65f6\u5173\u95ed\u6587\u4ef6\u63cf\u8ff0\u7b26（\u7981\u6b62\u8fdb\u7a0b\u590d\u5236，\u7236\u8fdb\u7a0b\u6253\u5f00\u4e00\u4e2a\u6587\u4ef6\u540e\u521b\u5efa\u5b50\u8fdb\u7a0b，\u5b50\u8fdb\u7a0b\u4e0d\u4f1a\u590d\u5236\u7236\u8fdb\u7a0b\u6253\u5f00\u7684\u8fd9\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26：\u4e0d\u77e5\u9053\u4e3a\u4ec0\u4e48\u53ef\u4ee5\u770b）<\/li>\n
                            • EFD_NONBLOCK：\u8bbe\u7f6e\u4e3a\u975e\u963b\u585e\u6a21\u5f0f<\/li>\n
                            • EFD_SEMAPHORE：\u8bbe\u7f6e\u4e3a\u4fe1\u53f7\u91cf\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                              \u8fd4\u56de\u503c：\u8fd4\u56de\u4e00\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u7528\u4e8e\u64cd\u4f5c<\/span><\/p>\n

                              eventfd\u4e5f\u662f\u901a\u8fc7read \/ write \/ close\u8fdb\u884c\u64cd\u4f5c\u7684<\/span><\/p>\n

                              \u6ce8\u610f\u70b9：read & write\u8fdb\u884cIO\u65f6，\u6570\u636e\u53ea\u80fd\u662f\u4e00\u4e2a8\u5b57\u8282\u6570\u636e<\/span><\/p>\n

                              \u4f7f\u7528\u65b9\u6cd5：<\/span><\/h4>\n

                              #include <iostream>
                              \n#include <stdint.h>
                              \n#include <sys\/eventfd.h>
                              \n#include <unistd.h>
                              \nint main() {
                              \n \/\/ \u521b\u5efaeventfd
                              \n int efd = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
                              \n if (efd < 0) {
                              \n perror("eventfd failed!!");
                              \n return -1;
                              \n }<\/p>\n

                              uint64_t val = 1;
                              \n \/\/ \u5199\u5165\u4e8b\u4ef6
                              \n write(efd, &val, sizeof(val));
                              \n write(efd, &val, sizeof(val));
                              \n write(efd, &val, sizeof(val));
                              \n \/\/ write(efd, &val, sizeof(val));
                              \n uint64_t res = 0;
                              \n \/\/ \u8bfb\u53d6\u4e8b\u4ef6
                              \n read(efd, &res, sizeof(res));
                              \n printf("%ld\\\\n", res);
                              \n close(efd);
                              \n return 0;
                              \n} <\/p>\n

                              eventfd\u9700\u8981\u914d\u5408\u591a\u8def\u590d\u7528\u548cIO\u64cd\u4f5c\u624d\u80fd\u5145\u5206\u53d1\u6325\u5176\u4f18\u52bf<\/span><\/p>\n

                              6.2 EventLoop\u6a21\u5757\u8bbe\u8ba1\u601d\u60f3<\/h3>\n

                              \u529f\u80fd<\/span><\/h4>\n
                                \n
                              • \n

                                \u8fdb\u884c\u4e8b\u4ef6\u76d1\u63a7\u7ba1\u7406\u7684\u6a21\u5757（\u5c01\u88c5\u4e86TimerQueue\u3001Poller\u6a21\u5757）<\/span><\/p>\n<\/li>\n

                              • \n

                                \u8fd9\u4e2a\u6a21\u5757\u5b9e\u9645\u4e0a\u5c31\u662f\u6211\u4eec\u6240\u8bf4\u7684one thread one loop\u4e2d\u7684loop，\u4e5f\u5c31\u662f\u6211\u4eec\u6240\u8bf4\u7684Reactor<\/span><\/p>\n<\/li>\n

                              • \n

                                \u8fd9\u4e2a\u6a21\u5757\u4e0e\u7ebf\u7a0b\u662f\u4e00\u4e00\u5bf9\u5e94\u5173\u8054\u7684<\/span><\/p>\n<\/li>\n<\/ul>\n

                                \u76d1\u6d4b\u4e00\u4e2a\u8fde\u63a5\u65f6，\u5f53\u8fde\u63a5\u5c31\u7eea\u540e\u9700\u8981\u5904\u7406\u5bf9\u5e94\u4e8b\u4ef6\u3002\u4f46\u82e5\u8be5\u63cf\u8ff0\u7b26\u5728\u591a\u4e2a\u7ebf\u7a0b\u4e2d\u540c\u65f6\u89e6\u53d1\u4e8b\u4ef6，\u5c31\u4f1a\u4ea7\u751f\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002\u56e0\u6b64，\u6211\u4eec\u9700\u8981\u5c06\u8fde\u63a5\u7684\u76d1\u63a7\u3001\u4e8b\u4ef6\u5904\u7406\u53ca\u5176\u4ed6\u76f8\u5173\u64cd\u4f5c\u90fd\u7f6e\u4e8e\u540c\u4e00\u7ebf\u7a0b\u4e2d\u6267\u884c\u3002<\/span><\/p>\n

                                \u8fd9\u5c31\u76f8\u5f53\u4e8e\u5c06Channel（\u5bf9\u4e8b\u4ef6\u76d1\u63a7\u7684\u7ba1\u7406，\u4e8b\u4ef6\u89e6\u53d1\u7684\u5904\u7406）\u548cPoller（\u5c01\u88c5epoll\u76d1\u63a7\u4e8b\u4ef6）\u5173\u8054\u5230\u4e86\u4e00\u8d77\u3002<\/span><\/p>\n

                                \"\"<\/p>\n

                                \u610f\u4e49<\/span><\/h4>\n
                                  \n
                                • \n

                                  \u5bf9\u4e8e\u670d\u52a1\u5668\u4e2d\u7684\u6240\u6709\u4e8b\u4ef6\u90fd\u662f\u7531EventLoop\u6a21\u5757\u6765\u5b8c\u6210<\/span><\/p>\n<\/li>\n

                                • \n

                                  \u6bcf\u4e00\u4e2aConnection\u8fde\u63a5，\u90fd\u4f1a\u7ed1\u5b9a\u4e00\u4e2aEventLoop\u6a21\u5757\u548c\u7ebf\u7a0b，\u56e0\u4e3a\u5916\u754c\u5bf9\u4e8e\u8fde\u63a5\u7684\u6240\u6709\u64cd\u4f5c，\u90fd\u662f\u8981\u653e\u5230\u540c\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u8fdb\u884c\u7684<\/span><\/p>\n<\/li>\n<\/ul>\n

                                  \u601d\u60f3<\/span><\/p>\n

                                  \u5bf9\u4e8e\u6240\u6709\u7684\u8fde\u63a5\u8fdb\u884c\u4e8b\u4ef6\u76d1\u63a7<\/span><\/p>\n

                                    \n
                                  • \u8fde\u63a5\u89e6\u53d1\u4e8b\u4ef6\u540e\u8c03\u7528\u56de\u8c03\u8fdb\u884c\u5904\u7406\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span><\/li>\n<\/ul>\n

                                    \u5bf9\u4e8e\u8fde\u63a5\u7684\u6240\u6709\u64cd\u4f5c，\u90fd\u8981\u653e\u5230eventloop\u5bf9\u5e94\u7684\u7ebf\u7a0b\u4e2d\u6267\u884c<\/span><\/p>\n

                                    \u89e3\u51b3\u65b9\u6848：<\/span><\/p>\n

                                    \u5728EventLoop\u6a21\u5757\u4e2d，\u6dfb\u52a0\u4e00\u4e2a\u4efb\u52a1\u961f\u5217，\u5bf9\u8fde\u63a5\u7684\u6240\u6709\u64cd\u4f5c\u90fd\u8fdb\u884c\u4e00\u6b21\u5c01\u88c5，\u5c06\u5bf9\u8fde\u63a5\u7684\u64cd\u4f5c\u90fd\u4e0d\u76f4\u63a5\u6267\u884c，\u5f53\u505a\u4efb\u52a1\u6dfb\u52a0\u5230\u4efb\u52a1\u961f\u5217\u5f53\u4e2d\u3002<\/span><\/p>\n

                                    EventLoop\u5904\u7406\u6d41\u7a0b：<\/span><\/p>\n

                                    \u00a0 \u00a0 \u00a0 \u00a0 1.\u5728\u7ebf\u7a0b\u4e2d\u5bf9\u63cf\u8ff0\u7b26\u8fdb\u884c\u4e8b\u4ef6\u76d1\u63a7<\/span><\/p>\n

                                    \u00a0 \u00a0 \u00a0 \u00a0 2.\u6709\u63cf\u8ff0\u7b26\u5c31\u7eea\u5219\u5bf9\u63cf\u8ff0\u7b26\u8fdb\u884c\u4e8b\u4ef6\u5904\u7406（\u5982\u4f55\u4fdd\u8bc1\u5904\u7406\u56de\u8c03\u51fd\u6570\u4e2d\u7684\u64cd\u4f5c\u90fd\u5728\u7ebf\u7a0b\u4e2d\u5462：\u5c06\u64cd\u4f5c\u90fd\u5c01\u88c5\u5230\u4efb\u52a1\u961f\u5217）<\/span><\/p>\n

                                    \u00a0 \u00a0 \u00a0 \u00a0 3.\u6240\u6709\u7684\u5c31\u7eea\u4e8b\u4ef6\u5904\u7406\u5b8c\u4e86，\u8fd9\u65f6\u5019\u518d\u53bb\u5c06\u4efb\u52a1\u961f\u5217\u4e2d\u7684\u6240\u6709\u4efb\u52a1\u4e00\u4e00\u6267\u884c<\/span><\/p>\n

                                    \"\"<\/p>\n

                                    \u6700\u540e\u4ec5\u5728\u4efb\u52a1\u961f\u5217\u5904\u52a0\u4e0a\u9501\u4fdd\u8bc1\u7ebf\u7a0b\u5b89\u5168<\/span><\/p>\n

                                    6.3 EventLoop\u6a21\u5757\u7c7b\u63a5\u53e3\u8bbe\u8ba1<\/span><\/h3>\n

                                    1.\u4e8b\u4ef6\u76d1\u63a7<\/span><\/p>\n

                                    \u00a0 \u00a0 \u00a0 \u00a0 \u4f7f\u7528Poller\u6a21\u5757<\/span><\/p>\n

                                    \u00a0 \u00a0 \u00a0 \u00a0 \u6709\u4e8b\u4ef6\u5c31\u7eea\u5219\u8fdb\u884c\u4e8b\u4ef6\u5904\u7406<\/span><\/p>\n

                                    2.\u6267\u884c\u4efb\u52a1\u961f\u5217\u4e2d\u7684\u4efb\u52a1<\/span><\/p>\n

                                    \u00a0 \u00a0 \u00a0 \u00a0 \u4e00\u4e2a\u7ebf\u7a0b\u5b89\u5168\u7684\u4efb\u52a1\u961f\u5217<\/span><\/p>\n

                                    \u5173\u952e\u6ce8\u610f\u4e8b\u9879：\u5f53\u4efb\u52a1\u6267\u884c\u6d41\u7a0b\u56e0\u7b49\u5f85\u6587\u4ef6\u63cf\u8ff0\u7b26IO\u4e8b\u4ef6\u5c31\u7eea\u800c\u963b\u585e\u65f6，\u53ef\u80fd\u5bfc\u81f4\u961f\u5217\u4e2d\u7684\u4efb\u52a1\u65e0\u6cd5\u6267\u884c\u3002\u4e3a\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898，\u9700\u8981\u5f15\u5165eventfd\u4e8b\u4ef6\u901a\u77e5\u673a\u5236，\u53ca\u65f6\u5524\u9192\u5904\u4e8e\u963b\u585e\u72b6\u6001\u7684\u4e8b\u4ef6\u76d1\u63a7\u3002<\/span><\/p>\n

                                    \u5f53\u4e8b\u4ef6\u5c31\u7eea，\u9700\u8981\u5904\u7406\u7684\u65f6\u5019，\u5904\u7406\u8fc7\u7a0b\u4e2d，\u5982\u679c\u5bf9\u8fde\u63a5\u8981\u8fdb\u884c\u67d0\u4e9b\u64cd\u4f5c： \u8fd9\u4e9b\u64cd\u4f5c\u5fc5\u987b\u5728EventLoop\u5bf9\u5e94\u7684\u7ebf\u7a0b\u4e2d\u6267\u884c，\u4fdd\u8bc1\u5bf9\u8fde\u63a5\u7684\u5404\u9879\u64cd\u4f5c\u90fd\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002<\/span><\/p>\n

                                  • \n

                                    \u5982\u679c\u6267\u884c\u7684\u64cd\u4f5c\u672c\u5c31\u5728\u7ebf\u7a0b\u4e2d，\u4e0d\u9700\u8981\u5c06\u64cd\u4f5c\u538b\u5165\u961f\u5217\u4e86，\u53ef\u4ee5\u76f4\u63a5\u6267\u884c<\/span><\/p>\n<\/li>\n

                                  • \n

                                    \u5982\u679c\u6267\u884c\u7684\u64cd\u4f5c\u4e0d\u518d\u7ebf\u7a0b\u4e2d，\u624d\u9700\u8981\u52a0\u5165\u4efb\u52a1\u6c60，\u7b49\u5230\u4e8b\u4ef6\u5904\u7406\u5b8c\u4e86\u7136\u540e\u6267\u884c\u4efb\u52a1<\/span><\/p>\n<\/li>\n

                                    \u63a5\u53e3\u8bbe\u8ba1<\/span><\/h4>\n

                                    class EventLoop {
                                    \nprivate:
                                    \n using Functor = std::function<void()>;<\/p>\n

                                    std::thread::id _thread_id;
                                    \n int _event_fd; \/\/ eventfd\u5524\u9192IO\u4e8b\u4ef6\u76d1\u63a7\u6709\u53ef\u80fd\u5bfc\u81f4\u7684\u963b\u585e
                                    \n Poller _poller; \/\/ \u8fdb\u884c\u6240\u6709\u63cf\u8ff0\u7b26\u7684\u4e8b\u4ef6\u76d1\u63a7
                                    \n std::vector<Functor> _tasks; \/\/ \u4efb\u52a1\u6c60
                                    \n std::mutex _mutex;<\/p>\n

                                    private:
                                    \n \/\/ \u6267\u884c\u4efb\u52a1\u6c60\u4e2d\u7684\u6240\u6709\u4efb\u52a1
                                    \n void RunAllTask();<\/p>\n

                                    public:
                                    \n EventLoop();
                                    \n \/\/ \u5224\u65ad\u5c06\u8981\u6267\u884c\u7684\u4efb\u52a1\u662f\u5426\u5904\u4e8e\u5f53\u524d\u7ebf\u7a0b\u4e2d，\u5982\u679c\u662f\u5219\u6267\u884c，\u4e0d\u662f\u5219\u538b\u5165\u961f\u5217
                                    \n void RunInLoop(const Functor& cb);
                                    \n \/\/ \u5c06\u64cd\u4f5c\u538b\u5165\u4efb\u52a1\u6c60
                                    \n void QueueInLoop(const Functor& cb);
                                    \n \/\/ \u5224\u65ad\u4efb\u52a1\u6240\u5728\u7684\u7ebf\u7a0b\u662f\u5426\u662f\u5728\u5f53\u524d\u7684\u7ebf\u7a0b\u4e2d\u4e0d\u65ad\u5904\u7406\u7684\u4e8b\u4ef6\u5904\u7406\u5faa\u73af
                                    \n bool IsInLoop();
                                    \n \/\/ \u4fee\u6539\/\u6dfb\u52a0\u63cf\u8ff0\u7b26\u7684\u4e8b\u4ef6\u76d1\u63a7
                                    \n void UpdateEvent(Channel* channel);
                                    \n \/\/ \u79fb\u9664\u63cf\u8ff0\u7b26\u7684\u6240\u6709\u76d1\u63a7
                                    \n void RemoveEvent(Channel* channel);<\/p>\n

                                    \/\/ \u542f\u52a8EventLoop\u6a21\u5757：\u5148\u8fdb\u884c\u4efb\u52a1\u76d1\u63a7，\u63a5\u4e0b\u6765\u5904\u7406\u5c31\u7eea\u4e8b\u4ef6，\u4e8b\u4ef6\u5904\u7406\u5b8c\u4e86，\u5904\u7406\u4efb\u52a1
                                    \n void Start();
                                    \n}; <\/p>\n

                                    6.4 EventLoop\u6a21\u5757\u7c7b\u63a5\u53e3\u5b9e\u73b0\u3001\u6574\u5408\u7f16\u8bd1<\/span><\/h3>\n

                                    \u6ce8\u610f：<\/span><\/p>\n

                                    \u4e0e `std::lock_guard` \u76f8\u6bd4，`std::unique_lock` \u66f4\u52a0\u7075\u6d3b\u3002\u5b83\u5141\u8bb8\u5ef6\u8fdf\u9501\u5b9a\u548c\u89e3\u9501\u64cd\u4f5c，\u53ef\u4ee5\u901a\u8fc7\u6210\u5458\u51fd\u6570\u5982 `lock()` \u548c `unlock()` \u6765\u63a7\u5236\u9501\u7684\u83b7\u53d6\u548c\u91ca\u653e\u65f6\u673a，\u51fa\u4f5c\u7528\u57df\u89e3\u9501\u3002\u800c `std::lock_guard` \u662f\u5728\u6784\u9020\u65f6\u9501\u5b9a\u4e92\u65a5\u9501，\u5728\u6790\u6784\u65f6\u89e3\u9501，\u4e0d\u80fd\u5bf9\u9501\u5b9a\u548c\u89e3\u9501\u7684\u8fc7\u7a0b\u8fdb\u884c\u66f4\u7ec6\u81f4\u7684\u63a7\u5236\u3002<\/span><\/p>\n

                                    #include <bits\/std_thread.h>
                                    \n#include <mutex>
                                    \n#include <stdint.h>
                                    \n#include <sys\/eventfd.h>
                                    \nclass EventLoop {
                                    \nprivate:
                                    \n using Functor = std::function<void()>;<\/p>\n

                                    std::thread::id _thread_id;
                                    \n int _event_fd; \/\/ eventfd\u5524\u9192IO\u4e8b\u4ef6\u76d1\u63a7\u6709\u53ef\u80fd\u5bfc\u81f4\u7684\u963b\u585e
                                    \n \/\/ Channel *_event_channel; \/\/
                                    \n \/\/ \u6ce8\u610fEventLoop\u6790\u6784，\u4f46\u662f_event_channel\u5e76\u4e0d\u4f1a\u88ab\u91ca\u653e，\u6240\u4ee5\u8981\u5728\u6790\u6784\u91ccdelete
                                    \n \/\/ \u6240\u4ee5\u4f7f\u7528unique_str\u5c06\u8be5\u6307\u9488\u7ba1\u7406\u8d77\u6765，EventLoop\u91ca\u653e\u7684\u65f6\u5019
                                    \n \/\/ ，unique_ptr\u4e5f\u4f1a\u91ca\u653e，\u8fde\u5e26\u6240\u7ba1\u7406\u7684_event_channel\u4e00\u5e76\u91ca\u653e
                                    \n std::unique_ptr<Channel> _event_channel;
                                    \n Poller _poller; \/\/ \u8fdb\u884c\u6240\u6709\u63cf\u8ff0\u7b26\u7684\u4e8b\u4ef6\u76d1\u63a7
                                    \n std::vector<Functor> _tasks; \/\/ \u4efb\u52a1\u6c60
                                    \n std::mutex _mutex;<\/p>\n

                                    private:
                                    \n \/\/ \u6267\u884c\u4efb\u52a1\u6c60\u4e2d\u7684\u6240\u6709\u4efb\u52a1
                                    \n void RunAllTask() {
                                    \n std::vector<Functor> functor;
                                    \n {
                                    \n std::unique_lock<std::mutex> _lock(_mutex); \/\/ \u51fa\u4f5c\u7528\u57df\u89e3\u9501
                                    \n _tasks.swap(functor); \/\/ functor\u4e2d\u4fdd\u5b58\u6240\u6709\u7684\u4efb\u52a1
                                    \n }
                                    \n for (auto& f : functor) {
                                    \n f();
                                    \n }
                                    \n return;
                                    \n }
                                    \n \/\/
                                    \n static int CreateEventFd() {
                                    \n int efd = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
                                    \n if (efd < 0) {
                                    \n ERR_LOG("CREATE EVENTFD FAILED!!");
                                    \n abort();
                                    \n }
                                    \n return efd;
                                    \n }
                                    \n void ReadEventFd() {<\/p>\n

                                    uint64_t res = 0;
                                    \n \/\/ \u8bfb\u53d6\u4e8b\u4ef6
                                    \n int ret = read(_event_fd, &res, sizeof(res));
                                    \n if (ret < 0) {
                                    \n \/\/ EINTR:\u88ab\u4fe1\u53f7\u6253\u65ad，EAGAIN:\u65e0\u6570\u636e\u53ef\u8bfb
                                    \n if (errno == EINTR || errno == EAGAIN) {
                                    \n return;
                                    \n }
                                    \n ERR_LOG("READ EVENTFD FAILED");
                                    \n }
                                    \n return;
                                    \n }
                                    \n void WeakUpEvented() {
                                    \n \/\/ \u7ed9Eventfd\u5199\u5165\u6570\u636e
                                    \n uint64_t val = 1;
                                    \n int ret = write(_event_fd, &val, sizeof(val));
                                    \n if (ret < 0) {
                                    \n if (errno == EINTR) {
                                    \n return;
                                    \n }
                                    \n ERR_LOG("READ EVENTFD FAILED");
                                    \n }
                                    \n return;
                                    \n }<\/p>\n

                                    public:
                                    \n EventLoop()
                                    \n : _thread_id(std::this_thread::get_id()), _event_fd(CreateEventFd()),
                                    \n _event_channel(new Channel(this, _event_fd)) \/\/ \u6ce8\u610f_event_fd\u8981\u5148\u5b9a\u4e49
                                    \n {
                                    \n \/\/ \u7ed9eventfd\u6dfb\u52a0\u53ef\u8bfb\u4e8b\u4ef6\u56de\u8c03\u51fd\u6570，\u8bfb\u53d6eventfd\u4e8b\u4ef6\u901a\u77e5\u6b21\u6570
                                    \n _event_channel->SetReadCallBack(
                                    \n std::bind(&EventLoop::ReadEventFd, this));
                                    \n \/\/ \u542f\u52a8eventfd\u7684\u8bfb\u4e8b\u4ef6\u76d1\u63a7
                                    \n _event_channel->EnableRead();
                                    \n }
                                    \n \/\/ \u542f\u52a8EventLoop\u6a21\u5757：1.\u5148\u8fdb\u884c\u4efb\u52a1\u76d1\u63a7，2.\u63a5\u4e0b\u6765\u5904\u7406\u5c31\u7eea\u4e8b\u4ef6，\u4e8b\u4ef6\u5904\u7406\u5b8c\u4e86，3.\u6267\u884c\u4efb\u52a1\u6c60
                                    \n void Start() {
                                    \n \/\/ 1.\u4e8b\u4ef6\u76d1\u63a7
                                    \n std::vector<Channel*> actives;
                                    \n _poller.Poll(&actives);
                                    \n for (auto& channel : actives) { \/\/ 2.\u4e8b\u4ef6\u5904\u7406
                                    \n channel->HandleEvent();
                                    \n }
                                    \n \/\/ 3.\u4e8b\u4ef6\u5904\u7406\u5b8c\u4e86，\u6267\u884c\u4efb\u52a1
                                    \n RunAllTask();
                                    \n }<\/p>\n

                                    \/\/ \u5224\u65ad\u4efb\u52a1\u6240\u5728\u7684\u7ebf\u7a0b\u662f\u5426\u662f\u5728\u5f53\u524d\u7684\u7ebf\u7a0b\u4e2d\u4e0d\u65ad\u5904\u7406\u7684\u4e8b\u4ef6\u5904\u7406\u5faa\u73af
                                    \n bool IsInLoop() { return (_thread_id == std::this_thread::get_id()); }
                                    \n \/\/ \u5224\u65ad\u5c06\u8981\u6267\u884c\u7684\u4efb\u52a1\u662f\u5426\u5904\u4e8e\u5f53\u524d\u7ebf\u7a0b\u4e2d，\u5982\u679c\u662f\u5219\u6267\u884c，\u4e0d\u662f\u5219\u538b\u5165\u961f\u5217
                                    \n void RunInLoop(const Functor& cb) {
                                    \n if (IsInLoop()) {
                                    \n return cb();
                                    \n }
                                    \n return QueueInLoop(cb);
                                    \n }
                                    \n \/\/ \u5c06\u64cd\u4f5c\u538b\u5165\u4efb\u52a1\u6c60
                                    \n void QueueInLoop(const Functor& cb) {
                                    \n {
                                    \n std::unique_lock<std::mutex> _lock(_mutex);
                                    \n _tasks.push_back(cb);
                                    \n }
                                    \n \/\/ \u5524\u9192\u6709\u53ef\u80fd\u56e0\u4e3a\u6ca1\u6709\u4e8b\u4ef6\u5c31\u7eea\u800c\u5bfc\u81f4\u7684epoll\u963b\u585e
                                    \n \/\/ \u5176\u5b9e\u5c31\u662f\u7ed9Eventfd\u5199\u5165\u4e00\u4e2a\u6570\u636e，eventfd\u5c31\u4f1a\u51fa\u53d1\u53ef\u8bfb\u4e8b\u4ef6
                                    \n WeakUpEvented();
                                    \n }<\/p>\n

                                    \/\/ \u4fee\u6539\/\u6dfb\u52a0\u63cf\u8ff0\u7b26\u7684\u4e8b\u4ef6\u76d1\u63a7
                                    \n void UpdateEvent(Channel* channel) { return _poller.UpdateEvent(channel); }
                                    \n \/\/ \u79fb\u9664\u63cf\u8ff0\u7b26\u7684\u6240\u6709\u76d1\u63a7
                                    \n void RemoveEvent(Channel* channel) { return _poller.RemoveEvent(channel); }
                                    \n};
                                    \nvoid Channel::Remove() { return _loop->RemoveEvent(this); }
                                    \nvoid Channel::Update() { return _loop->UpdateEvent(this); } <\/p>\n

                                    \u6ce8\u610f：\u5728Channel\u4e2d，\u5c06Poller *poller—->\u66ff\u6362\u4e3aEventLoop *loop，Remove\u548cUpdate\u4e2d\u4e5f\u9700\u8981\u66f4\u6539\u5bf9\u8c61_poller —> _loop<\/span><\/p>\n

                                    \"\"<\/p>\n

                                    6.5\u00a0EventLoop\u6a21\u5757\u7c7b\u6574\u5408\u6d4b\u8bd5<\/span><\/h3>\n

                                    \u6d4b\u8bd5\u7528\u4f8b\u4f9d\u65e7\u4f7f\u7528\u524d\u9762\u7684tcp_svr.cc\u548ctcp_cli.cc，\u4ec5\u4fee\u6539：\u5c06tcp_svr.cc\u4e2d\u7684Poller —> EventLoop，poller —> loop，\u4ee5\u53ca\u5faa\u73af\u5185\u5904\u7406\u5c31\u7eea\u4e8b\u4ef6\u6539\u4e3a：loop.Start()<\/span><\/p>\n

                                    \"\"<\/p>\n

                                    \u4e03\u3001TimerWheel\u5b9a\u65f6\u5668\u6a21\u5757\u6574\u5408<\/span><\/h2>\n

                                    \u5728\u6211\u7684\u4e0a\u4e00\u7bc7\u535a\u5ba2\u6709\u8be6\u7ec6\u8bb2\u89e3\u4e86\u65f6\u95f4\u8f6e\u5b9a\u65f6\u5668\u539f\u7406\u4ee5\u53ca\u5b9e\u73b0，\u672c\u6a21\u5757\u5bf9\u4e0a\u7bc7\u535a\u5ba2\u4e2d\u7684\u4ee3\u7801\u8fdb\u884c\u8c03\u6574，\u5c06timerfd.cpp + timerwheel.cpp\u6574\u5408\u6210\u4e00\u4e2a\u7c7b\u81f3server.hpp\u4e2d，\u4ee3\u7801\u4e5f\u5728\u6211\u7684gitee\u4e2d\u3002<\/span><\/p>\n

                                    timerfd：\u8d1f\u8d23\u5b9e\u73b0\u5185\u6838\u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4，\u7ed9\u8fdb\u7a0b\u89e6\u53d1\u4e00\u6b21\u5b9a=\u8d85\u65f6\u4e8b\u4ef6<\/span><\/p>\n

                                    timerwheel：\u8d1f\u8d23\u5b9e\u73b0\u6bcf\u6b21\u6267\u884cRunTimeTask，\u90fd\u53ef\u4ee5\u6267\u884c\u4e00\u6279\u5230\u671f\u7684\u5b9a\u65f6\u4efb\u52a1<\/span><\/p>\n

                                    \u8981\u5b9e\u73b0\u4e00\u4e2a\u5b8c\u6574\u7684\u79d2\u7ea7\u5b9a\u65f6\u5668，\u5c31\u9700\u8981\u5c06\u8fd9\u4e24\u4e2a\u529f\u80fd\u6574\u5408\u81f3\u4e00\u8d77，\u5e76\u4e14\u4e0eChannel\u8054\u7cfb\u8d77\u6765<\/span><\/p>\n

                                    7.1 EventLoop\u4e0eTimerWheel\u6a21\u5757\u6574\u5408\u4e0e\u7f16\u8bd1<\/span><\/h3>\n

                                    \u8fd9\u4e00\u5904\u7684\u4ee3\u7801\u7684\u8c03\u6574\u53ef\u4ee5\u770b\u6211\u7684gitee<\/span><\/p>\n

                                    7.2 EventLoop\u4e0eTimerWheel\u8054\u5408\u8c03\u8bd5<\/span><\/h3>\n

                                    tcp_svr.cpp\u4fee\u6539\u5904：<\/span><\/p>\n

                                    \"\"<\/p>\n

                                    \"\"<\/p>\n

                                    \"\"<\/p>\n

                                    \"\"<\/p>\n

                                    tcp_cli.cpp<\/span><\/p>\n

                                    \"\"<\/p>\n

                                    \u6211\u8fd9\u91cc\u6240\u9a8c\u8bc1\u7684\u5b9e\u9a8c\u73b0\u8c61\u662f，\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u53d1\u90015\u6b21\u6570\u636e（5s），\u5c31\u6b7b\u5faa\u73af\u4e0d\u518d\u53d1\u9001\u6d88\u606f，\u670d\u52a1\u5668\u5c31\u4e0d\u518d\u5237\u65b0\u6d3b\u8dc3\u5ea6，10s\u8fc7\u540e\u5c31\u5173\u95ed\u8be5\u8fde\u63a5<\/span><\/p>\n

                                    \"\"<\/p>\n

                                    7.3 EventLoop\u6a21\u5757\u8054\u8c03\u4e2d（\u7b80\u5355\u670d\u52a1\u5668）\u7684\u6a21\u5757\u6d41\u7a0b\u5173\u7cfb\u56fe<\/span><\/h3>\n

                                    \u6839\u636e\u4ee5\u4e0b\u8fd9\u5e45\u56fe\u6240\u6807\u660e\u7684\u6b65\u9aa4\u7ed3\u5408\u6211\u4eec\u7684\u4ee3\u7801\u6765\u770b\u4fbf\u4e8e\u7406\u89e3<\/span><\/p>\n

                                    \"\"<\/p>\n<\/p>\n

                                    \u7ed3\u8bed：<\/span><\/p>\n

                                    \u00a0 \u00a0 \u00a0 \u00a0\u968f\u7740\u8fd9\u7bc7\u535a\u5ba2\u63a5\u8fd1\u5c3e\u58f0，\u6211\u8877\u5fc3\u5e0c\u671b\u6211\u6240\u5206\u4eab\u7684\u5185\u5bb9\u80fd\u4e3a\u4f60\u5e26\u6765\u4e00\u4e9b\u542f\u53d1\u548c\u5e2e\u52a9\u3002\u5b66\u4e60\u548c\u7406\u89e3\u7684\u8fc7\u7a0b\u5f80\u5f80\u5145\u6ee1\u6311\u6218，\u4f46\u6b63\u662f\u8fd9\u4e9b\u6311\u6218\u8ba9\u6211\u4eec\u4e0d\u65ad\u6210\u957f\u548c\u8fdb\u6b65\u3002\u6211\u5728\u51c6\u5907\u8fd9\u7bc7\u6587\u7ae0\u65f6，\u4e5f\u6df1\u523b\u4f53\u4f1a\u5230\u4e86\u5b66\u4e60\u4e0e\u5206\u4eab\u7684\u4e50\u8da3\u3002 \u00a0 \u00a0<\/span><\/p>\n

                                    \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u5728\u6b64，\u6211\u8981\u7279\u522b\u611f\u8c22\u6bcf\u4e00\u4f4d\u9605\u8bfb\u5230\u8fd9\u91cc\u7684\u4f60\u3002\u662f\u4f60\u7684\u5173\u6ce8\u548c\u652f\u6301，\u7ed9\u4e88\u4e86\u6211\u6301\u7eed\u5199\u4f5c\u548c\u5206\u4eab\u7684\u52a8\u529b\u3002\u6211\u6df1\u77e5，\u65e0\u8bba\u6211\u5728\u67d0\u4e2a\u9886\u57df\u6709\u591a\u5c11\u89c1\u89e3，\u90fd\u79bb\u4e0d\u5f00\u5927\u5bb6\u7684\u9f13\u52b1\u4e0e\u6307\u6b63\u3002\u56e0\u6b64，\u5982\u679c\u4f60\u5728\u9605\u8bfb\u8fc7\u7a0b\u4e2d\u6709\u4efb\u4f55\u7591\u95ee\u3001\u5efa\u8bae\u6216\u662f\u53d1\u73b0\u4e86\u6587\u7ae0\u4e2d\u7684\u4e0d\u8db3\u4e4b\u5904，\u90fd\u6b22\u8fce\u4f60\u6177\u6168\u8d50\u6559\u3002<\/span><\/p>\n

                                    \u00a0 \u00a0 \u00a0 \u00a0 \u4f60\u7684\u6bcf\u4e00\u6761\u53cd\u9988\u90fd\u662f\u6211\u524d\u8fdb\u8def\u4e0a\u7684\u5b9d\u8d35\u8d22\u5bcc\u3002\u540c\u65f6，\u6211\u4e5f\u975e\u5e38\u671f\u5f85\u80fd\u591f\u5f97\u5230\u4f60\u7684\u70b9\u8d5e\u3001\u6536\u85cf，\u5173\u6ce8\u8fd9\u5c06\u662f\u5bf9\u6211\u83ab\u5927\u7684\u652f\u6301\u548c\u9f13\u52b1\u3002\u5f53\u7136，\u6211\u66f4\u671f\u5f85\u7684\u662f\u80fd\u591f\u6301\u7eed\u4e3a\u4f60\u5e26\u6765\u6709\u4ef7\u503c\u7684\u5185\u5bb9\u3002<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

                                    \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb905\u6b21\uff0c\u70b9\u8d5e22\u6b21\uff0c\u6536\u85cf23\u6b21\u3002\u672c\u6587\u6458\u8981\uff1a\u672c\u6587\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u7f51\u7edc\u7f16\u7a0b\u4e2d\u5173\u952e\u6a21\u5757\u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0\uff0c\u5305\u62ecBuffer\u7f13\u51b2\u533a\u6a21\u5757\u3001Socket\u5957\u63a5\u5b57\u6a21\u5757\u3001Channel\u4e8b\u4ef6\u7ba1\u7406\u6a21\u5757\u3001Poller\u63cf\u8ff0\u7b26\u76d1\u63a7\u6a21\u5757\u3001EventLoop\u4e8b\u4ef6\u5faa\u73af\u6a21\u5757\u548cTimerWheel\u5b9a\u65f6\u5668\u6a21\u5757\u3002Buffer\u6a21\u5757\u91c7\u7528vector<char>\u4f5c\u4e3a\u5e95\u5c42\u5bb9\u5668\uff0c\u907f\u514dstring\u7684\\’\\\\0\\’\u622a\u65ad\u95ee\u9898\uff0c\u63d0\u4f9b\u6570\u636e\u5b58\u50a8\u548c\u7ba1\u7406\u529f\u80fd\uff1bSocket\u6a21\u5757\u5c01\u88c5\u4e86TCP\/UDP\u5957\u63a5\u5b57\u64cd\u4f5c\uff1bChannel\u548cPoller\u6a21\u5757\u5b9e\u73b0\u5bf9\u63cf\u8ff0\u7b26\u7684\u4e8b\u4ef6\u76d1\u63a7\u7ba1\u7406\uff1bEventLoop\u6a21\u5757\u91c7\u7528one thread<\/p>\n","protected":false},"author":2,"featured_media":44441,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,58,43,211,44],"topic":[],"class_list":["post-44461","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-c","tag-linux","tag-43","tag-211","tag-44"],"yoast_head":"\n\u3010\u9879\u76ee\u3011\u4effmuduo\u5e93one thread one loop\u5f0f\u5e76\u53d1\u670d\u52a1\u5668\uff08\u4e0a\uff09 - 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