\u00a0 \u00a0 \u00a0 \u00a0 epoll \u662f Linux \u5185\u6838\u63d0\u4f9b\u7684\u4e00\u79cd\u53ef\u6269\u5c55\u7684 I\/O \u4e8b\u4ef6\u901a\u77e5\u673a\u5236，\u4e13\u95e8\u7528\u4e8e\u9ad8\u6548\u5730\u76d1\u63a7\u5927\u91cf\u6587\u4ef6\u63cf\u8ff0\u7b26（\u5982 socket\u3001\u7ba1\u9053\u3001\u7ec8\u7aef\u7b49），\u7b49\u5f85\u5176\u4e2d\u7684\u67d0\u4e9b\u53d8\u4e3a\u53ef\u8bfb\u3001\u53ef\u5199\u6216\u53d1\u751f\u5f02\u5e38\u3002\u5b83\u662f\u4f20\u7edf select \u548c poll \u7684\u66ff\u4ee3\u65b9\u6848，\u8bbe\u8ba1\u4e0a\u89e3\u51b3\u4e86\u540e\u4e24\u8005\u5728\u8fde\u63a5\u6570\u4e0a\u5347\u65f6\u6027\u80fd\u7ebf\u6027\u4e0b\u964d\u7684\u95ee\u9898\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728\u4e0a\u4e00\u8282\u4e2d，\u6211\u4eec\u5df2\u7ecf\u5b8c\u6210\u4e86 Socket \u7c7b\u7684\u5c01\u88c5，\u5b83\u80fd\u591f\u521b\u5efa\u5957\u63a5\u5b57\u3001\u7ed1\u5b9a\u5730\u5740\u3001\u76d1\u542c \/ \u8fde\u63a5，\u4ee5\u53ca\u8fdb\u884c\u963b\u585e\u6216\u975e\u963b\u585e\u7684\u8bfb\u5199\u3002\u4f46\u4ec5\u6709\u88f8\u7684 Socket\u00a0\u8fd8\u8fdc\u8fdc\u4e0d\u591f\u2014\u2014\u6211\u4eec\u7684\u76ee\u6807\u662f\u6784\u5efa\u4e00\u4e2a\u9ad8\u6027\u80fd\u7684 Reactor \u7f51\u7edc\u6846\u67b6，\u6838\u5fc3\u5c31\u5728\u4e8e：\u8ba9 Poller\u76d1\u63a7\u5927\u91cf\u6587\u4ef6\u63cf\u8ff0\u7b26，\u5e76\u5728\u5c31\u7eea\u65f6\u56de\u8c03\u5bf9\u5e94\u7684\u5904\u7406\u51fd\u6570\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u5c31\u9700\u8981\u4e00\u4e2a\u6865\u6881，\u5c06\u6587\u4ef6\u63cf\u8ff0\u7b26\u3001\u76d1\u63a7\u7684\u4e8b\u4ef6\u3001\u5c31\u7eea\u540e\u56de\u8c03\u7684\u51fd\u6570\u8fd9\u4e09\u8005\u7ed1\u5b9a\u5728\u4e00\u8d77\u3002\u8fd9\u4e2a\u6865\u6881\u5c31\u662f Channel \u6a21\u5757\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Channel \u5e76\u4e0d\u62e5\u6709\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u751f\u547d\u5468\u671f，\u5b83\u53ea\u662f\u5bf9\u4e00\u4e2a\u5df2\u6253\u5f00\u7684 fd \u8fdb\u884c\u4e8b\u4ef6\u7ba1\u7406\u3002\u901a\u5e38\u4e00\u4e2a TCP \u8fde\u63a5（Connection）\u4f1a\u6301\u6709\u4e00\u4e2a Socket \u548c\u4e00\u4e2a Channel，Socket\u00a0\u8d1f\u8d23\u8bfb\u5199，Channel\u00a0\u8d1f\u8d23\u544a\u8bc9 Poller ：\u201c\u6211\u5bf9\u8fd9\u4e2a fd \u7684\u54ea\u4e9b\u4e8b\u4ef6\u611f\u5174\u8da3\u201d，\u5e76\u5728\u4e8b\u4ef6\u5c31\u7eea\u65f6\u8c03\u7528Connection\u63d0\u4f9b\u7684\u4e1a\u52a1\u56de\u8c03\u3002\u8fd9\u4e2aConnection\u4f1a\u5728\u4e4b\u540e\u8fdb\u884c\u7f16\u5199\u3002<\/p>\n
\u4e8b\u4ef6\u7ba1\u7406：
\n\u63cf\u8ff0\u7b26\u662f\u5426\u53ef\u8bfb
\n\u63cf\u8ff0\u7b26\u662f\u5426\u53ef\u5199
\n\u5bf9\u63cf\u8ff0\u7b26\u76d1\u63a7\u53ef\u8bfb
\n\u5bf9\u63cf\u8ff0\u7b26\u76d1\u63a7\u53ef\u5199
\n\u89e3\u9664\u53ef\u8bfb\u4e8b\u4ef6\u76d1\u63a7
\n\u89e3\u9664\u53ef\u5199\u4e8b\u4ef6\u76d1\u63a7
\n\u89e3\u9664\u6240\u6709\u4e8b\u4ef6\u76d1\u63a7<\/p>\n<\/li>\n
\u4e8b\u4ef6\u89e6\u53d1\u540e\u7684\u5904\u7406\u7ba1\u7406
\n\u9700\u8981\u5904\u7406\u7684\u4e8b\u4ef6：\u53ef\u8bfb\u3001\u53ef\u5199\u3001\u6302\u65ad\u3001\u9519\u8bef\u4ee5\u53ca\u4efb\u610f\u4e8b\u4ef6\u5904\u7406\u7684\u56de\u8c03\u51fd\u6570<\/p>\n<\/li>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u9700\u8981\u6ce8\u610f，\u8fd9\u4e2aChannel\u6a21\u5757\u662f\u975e\u5e38\u62bd\u8c61\u7684，\u662f\u73b0\u5728\u5199\u7684\u6a21\u5757\u4e2d\u6700\u96be\u61c2\u7684，\u53ef\u4ee5\u6df1\u5ea6\u7406\u89e3\u56de\u8c03\u51fd\u6570\u673a\u5236，\u53bb\u89e3\u8026\u5e95\u5c42\u673a\u5236\u4e0e\u4e0a\u5c42\u4e1a\u52a1，\u7528\u56de\u8c03\u6784\u5efa\u4e8b\u4ef6\u9a71\u52a8\u7684\u5f02\u6b65\u6d41\u7a0b\u3002\u56e0\u6b64\u6211\u4eec\u5728\u8fd9\u7406\u89e3\u4e0b\u8fd9\u4e9b\u56de\u8c03\u51fd\u6570\u5728\u4ec0\u4e48\u65f6\u5019\u4f1a\u88ab\u56de\u8c03\u5904\u7406：\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p>\n
\u4f55\u65f6\u6267\u884c：\u53ea\u8981 HandleEvent \u88ab\u8c03\u7528，\u5e76\u4e14\u8fdb\u5165\u4e86\u4efb\u4f55\u4e00\u4e2a\u6709\u6548\u4e8b\u4ef6\u5206\u652f（\u53ef\u8bfb\u3001\u53ef\u5199\u3001\u9519\u8bef\u6216\u6302\u65ad），\u5728\u5177\u4f53\u7684\u8bfb\u5199\u56de\u8c03\u4e4b\u524d，\u5b83\u5c31\u4f1a\u88ab\u9996\u5148\u6267\u884c\u3002<\/p>\n<\/li>\n
\u5178\u578b\u573a\u666f：\u6bcf\u6b21\u8fde\u63a5\u6709\u201c\u52a8\u9759\u201d\u65f6\u90fd\u4f1a\u89e6\u53d1\u3002\u9002\u5408\u7528\u6765\u66f4\u65b0\u8fde\u63a5\u7684\u6700\u540e\u6d3b\u8dc3\u65f6\u95f4\u3001\u7edf\u8ba1\u4e8b\u4ef6\u6b21\u6570\u3001\u6253\u5370\u8c03\u8bd5\u4fe1\u606f\u7b49\u3002<\/p>\n<\/li>\n<\/ul>\n
\u4f55\u65f6\u6267\u884c：\u5f53 _revents\u00a0\u4e2d\u5305\u542b\u00a0EPOLLIN\u3001EPOLLRDHUP（\u5bf9\u7aef\u5173\u95ed\u5199\u7aef）\u6216\u00a0EPOLLPRI（\u5e26\u5916\u6570\u636e）\u65f6\u3002<\/p>\n<\/li>\n
\u89e6\u53d1\u6761\u4ef6：<\/p>\n
\u5185\u6838 socket \u63a5\u6536\u7f13\u51b2\u533a\u4e2d\u6709\u6570\u636e，\u53ef\u4ee5\u65e0\u963b\u585e\u5730\u8c03\u7528 recv \u8bfb\u53d6\u3002<\/p>\n<\/li>\n
\u5bf9\u7aef\u8c03\u7528\u4e86 close()\u00a0\u00a0\u6216 shutdown，\u672c\u7aef\u4f1a\u6536\u5230\u00a0EPOLLRDHUP（\u9700\u5728 _events \u4e2d\u663e\u5f0f\u8bbe\u7f6e\u76d1\u63a7）\u6216\u00a0EPOLLIN（\u8bfb\u8fd4\u56de 0）\u3002<\/p>\n<\/li>\n
\u6536\u5230 TCP \u5e26\u5916\u6570\u636e（\u7d27\u6025\u6307\u9488）\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
\u4f55\u65f6\u6267\u884c：\u5f53\u00a0_revents\u00a0\u00a0\u4e2d\u5305\u542b\u00a0EPOLLOUT\u00a0\u65f6\u3002<\/p>\n<\/li>\n
\u89e6\u53d1\u6761\u4ef6：\u5185\u6838 socket \u53d1\u9001\u7f13\u51b2\u533a\u4ece\u201c\u6ee1\u201d\u53d8\u4e3a\u201c\u6709\u53ef\u7528\u7a7a\u95f4\u201d（\u8fb9\u7f18\u89e6\u53d1）\u6216\u4e00\u76f4\u6709\u7a7a\u95f4（\u6c34\u5e73\u89e6\u53d1）\u3002<\/p>\n<\/li>\n<\/ul>\n
\u4f55\u65f6\u6267\u884c：\u5f53\u00a0_revents\u00a0\u00a0\u4e2d\u5305\u542b\u00a0EPOLLERR\u00a0\u65f6\u3002<\/p>\n<\/li>\n
\u89e6\u53d1\u6761\u4ef6：socket \u53d1\u751f\u4e86\u5f02\u6b65\u9519\u8bef（\u5982 RST \u54cd\u5e94\u3001ICMP \u9519\u8bef\u7b49）\u3002\u8fd9\u4e2a\u4e8b\u4ef6\u65e0\u9700\u7528\u6237\u4e3b\u52a8\u8bbe\u7f6e，\u5185\u6838\u4f1a\u81ea\u52a8\u76d1\u542c\u5e76\u8fd4\u56de\u3002<\/p>\n<\/li>\n<\/ul>\n
\u4f55\u65f6\u6267\u884c：\u5f53\u00a0_revents\u00a0\u00a0\u4e2d\u5305\u542b\u00a0EPOLLHUP\u00a0\u65f6\u3002<\/p>\n<\/li>\n
\u89e6\u53d1\u6761\u4ef6：\u8fde\u63a5\u6302\u8d77，\u5bf9\u7aef\u8fdb\u7a0b\u5d29\u6e83\u3001\u8c03\u7528 close()\u3001\u6216\u672c\u7aef shutdown \u5199\u7aef\u7b49\u5bfc\u81f4\u8bfb\u5199\u901a\u9053\u5b8c\u5168\u5173\u95ed\u3002<\/p>\n<\/li>\n<\/ul>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7531\u4e8e\u8003\u8651\u5230\u5927\u5bb6\u7b2c\u4e00\u6b21\u5199\u8fd9\u4e2a Channel \u6a21\u5757，\u6211\u4eec\u662f\u5148\u4e0d\u548c Poller \u6a21\u5757\u8fdb\u884c\u4ea4\u4e92，\u5230\u4e0b\u9762 Poller \u6a21\u5757\u5199\u5b8c\u4e4b\u540e，\u5728\u4fee\u6539 Channel \u4ee3\u7801，\u7136\u540e\u5b8c\u6210\u8054\u5408\u8c03\u8bd5<\/p>\n
#ifndef __CHANNEL__
\n#define __CHANNEL__<\/p>\n
#include <functional>
\n#include <cstdint>
\n#include <memory>
\n#include <sys\/epoll.h><\/p>\n
namespace xxhh
\n{
\n class Poller;<\/p>\n
class Channel : public std::enable_shared_from_this<Channel>
\n {
\n public:
\n using EventCallBack = std::function<void(std::shared_ptr<Channel>)>;<\/p>\n
\/\/ \u6784\u9020\u51fd\u6570：\u9700\u8981 Poller \u6307\u9488，\u7528\u4e8e\u540e\u7eed Update\/Remove
\n Channel(Poller *poller, int fd)
\n : _sockfd(fd), _poll(poller), _events(0), _revents(0) {}<\/p>\n
int Fd() const { return _sockfd; }
\n uint32_t Events() const { return _events; }
\n void SetREvents(uint32_t events) { _revents = events; }<\/p>\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 SetEventCallBack(const EventCallBack &cb) { _event_callback = cb; }<\/p>\n
bool ReadAble() const { return (_events & EPOLLIN); }
\n bool WriteAble() const { return (_events & EPOLLOUT); }<\/p>\n
void EnableRead()
\n {
\n _events |= EPOLLIN;
\n Update();
\n }
\n void EnableWrite()
\n {
\n _events |= EPOLLOUT;
\n Update();
\n }
\n void DisableRead()
\n {
\n _events &= ~EPOLLIN;
\n Update();
\n }
\n void DisableWrite()
\n {
\n _events &= ~EPOLLOUT;
\n Update();
\n }<\/p>\n
void Remove(); \/\/ \u5b9e\u73b0\u89c1 poller.hpp \u5c3e\u90e8
\n void Update(); \/\/ \u5b9e\u73b0\u89c1 poller.hpp \u5c3e\u90e8<\/p>\n
void HandleEvent()
\n {
\n auto self = shared_from_this(); \/\/ \u4fdd\u8bc1\u5728 HandleEvent \u5168\u7a0b\u5bf9\u8c61\u4e0d\u9500\u6bc1<\/p>\n
if ((_revents & EPOLLIN) || (_revents & EPOLLRDHUP) || (_revents & EPOLLPRI))
\n {
\n if (_read_callback)
\n _read_callback(self);
\n }
\n else if (_revents & EPOLLOUT)
\n {
\n if (_write_callback)
\n _write_callback(self);
\n }
\n else if (_revents & EPOLLERR)
\n {
\n if (_error_callback)
\n _error_callback(self);
\n }
\n else if (_revents & EPOLLHUP)
\n {
\n if (_close_callback)
\n _close_callback(self);
\n }
\n if (_event_callback)
\n _event_callback(self);
\n }<\/p>\n
private:
\n int _sockfd;
\n Poller *_poll;
\n uint32_t _events;
\n uint32_t _revents;
\n EventCallBack _read_callback;
\n EventCallBack _write_callback;
\n EventCallBack _error_callback;
\n EventCallBack _close_callback;
\n EventCallBack _event_callback;
\n };
\n}
\n#endif<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728\u5f02\u6b65\u7f51\u7edc\u5e93\u4e2d，Channel \u7684\u751f\u547d\u5468\u671f\u4e0d\u660e\u786e：\u5b83\u53ef\u80fd\u88ab Poller\u3001TcpConnection\u3001TcpServer \u7b49\u591a\u4e2a\u7ec4\u4ef6\u5171\u540c\u6301\u6709，\u800c\u4e14\u4e8b\u4ef6\u56de\u8c03（\u5982\u00a0_read_callback）\u5185\u90e8\u6709\u53ef\u80fd\u89e6\u53d1\u00a0delete this\u00a0\u6216\u8ba9\u6700\u540e\u4e00\u4e2a\u00a0shared_ptr\u00a0\u5f15\u7528\u6d88\u5931\u3002\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5982\u679c\u4f7f\u7528\u88f8\u6307\u9488，\u4e00\u65e6\u5728\u00a0HandleEvent\u00a0\u6267\u884c\u8fc7\u7a0b\u4e2d\u5bf9\u8c61\u88ab\u9500\u6bc1，\u540e\u7eed\u7684\u4ee3\u7801\u5c31\u4f1a\u8bbf\u95ee\u91ce\u6307\u9488，\u5bfc\u81f4\u5d29\u6e83\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::enable_shared_from_this\u00a0\u914d\u5408\u00a0shared_from_this()\u00a0\u53ef\u4ee5\u4fdd\u8bc1：\u5728\u00a0HandleEvent\u00a0\u4f5c\u7528\u57df\u5185，\u65e0\u8bba\u56de\u8c03\u51fd\u6570\u505a\u4e86\u4ec0\u4e48（\u6bd4\u5982\u8c03\u7528\u00a0Remove\u00a0\u6216\u5173\u95ed\u8fde\u63a5），self\u00a0\u8fd9\u4e2a\u4e34\u65f6\u00a0shared_ptr\u00a0\u90fd\u4f1a\u5ef6\u957f\u00a0Channel\u00a0\u7684\u751f\u547d\u5468\u671f，\u76f4\u5230\u00a0HandleEvent\u00a0\u51fd\u6570\u8fd4\u56de\u3002\u8fd9\u662f\u5f02\u6b65\u56de\u8c03\u573a\u666f\u4e0b\u9632\u6b62 use-after-free \u7684\u6807\u51c6\u505a\u6cd5\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u53e6\u5916，Channel\u00a0\u5e76\u4e0d\u62e5\u6709\u6587\u4ef6\u63cf\u8ff0\u7b26，\u5b83\u7684\u6240\u6709\u6743\u9700\u8981\u5171\u4eab（\u6bd4\u5982 TcpConnection \u548c EventLoop \u90fd\u53ef\u80fd\u6301\u6709），shared_ptr\u00a0\u6b63\u597d\u8868\u8fbe\u8fd9\u79cd\u5171\u4eab\u6240\u6709\u6743\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u56e0\u6b64，\u9009\u62e9\u00a0shared_ptr\u00a0\u662f\u51fa\u4e8e\u5b89\u5168\u6027\u548c\u5f02\u6b65\u7f16\u7a0b\u6a21\u578b\u7684\u53cc\u91cd\u8003\u8651\u3002<\/p>\n
\u00a0 \u00a0 \u00a0\u00a0 \u00a0 \u4e0a\u9762\u6211\u4eec\u4ecb\u7ecd\u4e86 epoll \u7684\u4f5c\u7528\u548c\u4f18\u52bf，\u4e0b\u9762\u6211\u4eec\u8981\u4ecb\u7ecd\u76f8\u5173\u7684\u63a5\u53e3，\u5728\u5b8c\u6210\u4ee3\u7801\u7684\u7f16\u5199<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int epoll_create(int size);<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0size \u53c2\u6570\u5386\u53f2\u4e0a\u662f\u7ed9\u5185\u6838\u7684\u4e00\u4e2a\u201c\u63d0\u793a\u201d，\u8868\u793a\u671f\u671b\u901a\u8fc7\u8fd9\u4e2a epoll \u5b9e\u4f8b\u76d1\u63a7\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\u3002\u5185\u6838\u80fd\u6839\u636e\u8fd9\u4e2a\u63d0\u793a\u63d0\u524d\u5206\u914d\u6070\u5f53\u5927\u5c0f\u7684\u5185\u90e8\u6570\u636e\u7ed3\u6784\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4f46\u5728\u00a0Linux 2.6.8 \u4e4b\u540e\u7684\u5185\u6838\u4e2d，\u8be5\u53c2\u6570\u5df2\u88ab\u5b8c\u5168\u5ffd\u7565，\u53ea\u8981\u4f20\u5165\u4e00\u4e2a\u5927\u4e8e 0\u00a0\u7684\u6574\u6570\u5373\u53ef\u3002\u5185\u6838\u4f1a\u6309\u9700\u52a8\u6001\u8c03\u6574\u5185\u5b58，\u4e0d\u518d\u4f9d\u8d56\u8be5\u503c\u505a\u9884\u5206\u914d\u3002<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u6210\u529f\u8fd4\u56de\u6587\u4ef6\u63cf\u8ff0\u7b26，\u5931\u8d25\u8fd4\u56de -1 \u5e76\u8bbe\u7f6e errno\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event);<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0\u76f8\u5173\u53c2\u6570：<\/p>\n
\u8fd4\u56de\u503c：\u6210\u529f\u8fd4\u56de 0，\u5931\u8d25\u8fd4\u56de -1 \u5e76\u8bbe\u7f6e errno（\u5982 EBADF\u3001EEXIST\u3001EINVAL \u7b49）\u3002<\/p>\n<\/li>\n<\/ul>\n
typedef union epoll_data {<\/p>\n
\u00a0 \u00a0 void \u00a0 \u00a0*ptr;<\/p>\n
\u00a0 \u00a0 int \u00a0 \u00a0 \u00a0fd;<\/p>\n
\u00a0 \u00a0 uint32_t u32;<\/p>\n
\u00a0 \u00a0 uint64_t u64;<\/p>\n
} epoll_data_t;<\/p>\n<\/p>\n
struct epoll_event {<\/p>\n
\u00a0 \u00a0 uint32_t \u00a0 \u00a0 events; \u00a0 \/* Epoll events *\/<\/p>\n
\u00a0 \u00a0 epoll_data_t data; \u00a0 \u00a0 \/* User data variable *\/<\/p>\n
};<\/p>\n
events：\u4f4d\u63a9\u7801，\u53ef\u7531\u4ee5\u4e0b\u6807\u5fd7\u7ec4\u5408：<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int epoll_wait(int epfd, struct epoll_event *events,int maxevents, int timeout);<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u76f8\u5173\u53c2\u6570：<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd4\u56de\u503c：<\/p>\n
epoll \u652f\u6301\u4e24\u79cd\u89e6\u53d1\u65b9\u5f0f，\u901a\u8fc7 epoll_event.events \u4e2d\u7684 EPOLLET \u6807\u5fd7\u63a7\u5236\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u53ea\u8981\u6587\u4ef6\u63cf\u8ff0\u7b26\u5904\u4e8e\u5c31\u7eea\u72b6\u6001，\u4f8b\u5982\u63a5\u6536\u7f13\u51b2\u533a\u4ecd\u6709\u6570\u636e\u672a\u8bfb\u5b8c，\u6bcf\u6b21\u8c03\u7528 epoll_wait \u90fd\u4f1a\u91cd\u590d\u901a\u77e5，\u76f4\u5230\u6570\u636e\u88ab\u8bfb\u8d70\u3002\u8fd9\u4e0e select\/poll \u884c\u4e3a\u4e00\u81f4，\u7f16\u7a0b\u7b80\u5355\u3001\u4e0d\u6613\u4e22\u4e8b\u4ef6\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4ec5\u5728\u63cf\u8ff0\u7b26\u72b6\u6001\u53d1\u751f\u53d8\u5316\u65f6\u624d\u901a\u77e5\u4e00\u6b21，\u4f8b\u5982\u4ece\u672a\u5c31\u7eea\u53d8\u4e3a\u5c31\u7eea\u3002\u4e00\u65e6\u4e8b\u4ef6\u88ab\u901a\u77e5，\u5373\u4f7f\u63cf\u8ff0\u7b26\u4ecd\u5c31\u7eea，\u53ea\u8981\u72b6\u6001\u6ca1\u6709\u518d\u53d8\u5316\u5c31\u4e0d\u4f1a\u518d\u6536\u5230\u901a\u77e5\u3002\u8fd9\u8981\u6c42：<\/p>\n
\u4e0b\u9762\u6211\u4eec\u5c06\u4f1a\u5c06\u4e0a\u9762\u7684\u63a5\u53e3\u8fdb\u884c\u5c01\u88c5：<\/p>\n
1. \u5fc5\u987b\u62e5\u6709\u4e00\u4e2a epoll \u7684\u64cd\u4f5c\u53e5\u67c4 \u00a0<\/p>\n
2. \u62e5\u6709\u4e00\u4e2a struct epoll_event \u7ed3\u6784\u6570\u7ec4，\u76d1\u63a7\u65f6\u4fdd\u5b58\u6240\u6709\u7684\u6d3b\u8dc3\u4e8b\u4ef6 \u00a0<\/p>\n
3. \u4f7f\u7528 hash \u8868\u7ba1\u7406\u63cf\u8ff0\u7b26\u4e0e\u63cf\u8ff0\u7b26\u5bf9\u5e94\u7684\u4e8b\u4ef6\u7ba1\u7406 Channel \u5bf9\u8c61 \u00a0<\/p>\n
1. \u6dfb\u52a0 \/ \u4fee\u6539\u63cf\u8ff0\u7684\u4e8b\u4ef6\u76d1\u63a7（\u4e0d\u5b58\u5728\u5219\u6dfb\u52a0，\u5b58\u5728\u5c31\u4fee\u6539） \u00a0<\/p>\n
2. \u79fb\u9664\u63cf\u8ff0\u7b26\u7684\u4e8b\u4ef6\u76d1\u63a7<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u4e3a\u4e86\u8ba9 Poller \u6a21\u5757\u4f7f\u7528 Channel \u7684\u76f8\u5173\u5185\u5bb9，\u6211\u4eec\u9700\u8981\u5bf9\u4e0a\u9762 Channel \u7684\u5185\u5bb9\u8fdb\u884c\u8865\u5145：<\/p>\n
#ifndef __SOCKET__
\n#define __SOCKET__
\n#include <iostream>
\n#include <string>
\n#include <sys\/types.h>
\n#include <sys\/socket.h>
\n#include <unistd.h>
\n#include <arpa\/inet.h>
\n#include <fcntl.h>
\n#include <cstring>
\n#include "log.hpp"
\nnamespace xxhh
\n{
\n#define DEFAULT_SOCKET_FD -1
\n#define MAX_LISTEN 1024
\n class Socket
\n {
\n public:
\n Socket() : _sockfd(DEFAULT_SOCKET_FD) {}
\n ~Socket() { Close(); };
\n Socket(int sockfd) : _sockfd(sockfd) {}
\n int Fd() { return _sockfd; }
\n \/\/ \u521b\u5efa\u5957\u63a5\u5b57
\n bool CreateSocket()
\n {
\n \/\/ int socket(int domain, int type, int protocol);
\n _sockfd = socket(AF_INET, SOCK_STREAM, 0);
\n if (_sockfd < 0)
\n {
\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 {
\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, const struct sockaddr *addr,socklen_t addrlen);
\n int ret = bind(_sockfd, (struct sockaddr *)&addr, len);
\n if (ret < 0)
\n {
\n ERR_LOG("Bind Address Failed!,errno: %d (%s)", errno, strerror(errno));
\n return false;
\n }
\n return true;
\n }
\n \/\/ \u5f00\u59cb\u76d1\u542c
\n bool Listen(int backlog = MAX_LISTEN)
\n {
\n \/\/ int listen(int sockfd, int backlog);
\n int ret = listen(_sockfd, backlog);
\n if (ret < 0)
\n {
\n ERR_LOG("Socket Listen fail");
\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 {
\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, const struct sockaddr *addr,socklen_t addrlen);
\n int ret = connect(_sockfd, (struct sockaddr *)&addr, len);
\n if (ret < 0)
\n {
\n ERR_LOG("Connect Server Failed!");
\n return false;
\n }
\n return true;
\n }
\n \/\/ \u63a5\u53d7\u65b0\u94fe\u63a5
\n int Accept()
\n {
\n int ret = accept(_sockfd, nullptr, nullptr);
\n if (ret < 0)
\n {
\n ERR_LOG("Socket Accept Failed!");
\n return -1;
\n }
\n return ret;
\n }
\n \/\/ \u63a5\u6536\u6570\u636e
\n ssize_t Recv(void *buf, size_t len, int flag = 0)
\n {
\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 {
\n \/\/ EAGAIN: \u8868\u660e\u5f53\u524d socket \u7684\u63a5\u6536\u7f13\u51b2\u533a\u4e2d\u6ca1\u6709\u6570\u636e，\u5728\u975e\u963b\u585e\u7684\u60c5\u51b5\u4e0b\u624d\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef
\n \/\/ EINTR: \u8868\u793a\u5f53\u524d socket \u7684\u963b\u585e\u7b49\u5f85，\u88ab\u4fe1\u53f7\u6253\u65ad\u4e86
\n if (errno == EAGAIN || errno == EINTR)
\n {
\n return 0;
\n }
\n ERR_LOG("Socket Recv Failed!");
\n return -1;
\n }
\n return ret;
\n }
\n ssize_t NonBlockRecv(void *buf, size_t len)
\n {
\n return Recv(buf, len, MSG_DONTWAIT);
\n }
\n \/\/ \u53d1\u9001\u6570\u636e
\n ssize_t Send(const void *buf, size_t len, int flag = 0)
\n {
\n \/\/ ssize_t send(int sockfd, const void *buf, size_t len, int flags);
\n int ret = send(_sockfd, buf, len, flag);
\n if (ret <= 0)
\n {
\n \/\/ EAGAIN: \u8868\u660e\u5f53\u524d socket \u7684\u63a5\u6536\u7f13\u51b2\u533a\u4e2d\u6ca1\u6709\u6570\u636e，\u5728\u975e\u963b\u585e\u7684\u60c5\u51b5\u4e0b\u624d\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef
\n \/\/ EINTR: \u8868\u793a\u5f53\u524d socket \u7684\u963b\u585e\u7b49\u5f85，\u88ab\u4fe1\u53f7\u6253\u65ad\u4e86
\n if (errno == EAGAIN || errno == EINTR)
\n {
\n return 0;
\n }
\n ERR_LOG("Socket Send Failed!");
\n return -1;
\n }
\n return ret; \/\/ \u5b9e\u9645\u53d1\u9001\u7684\u6570\u636e\u957f\u5ea6
\n }
\n ssize_t NonBlockSend(void *buf, size_t len)
\n {
\n return Send(buf, len, MSG_DONTWAIT);
\n }<\/p>\n
\/\/ \u5173\u95ed\u5957\u63a5\u5b57
\n void Close()
\n {
\n if (_sockfd != -1)
\n {
\n close(_sockfd);
\n _sockfd = -1;
\n }
\n }
\n \/\/ \u8bbe\u7f6e\u5957\u63a5\u5b57\u963b\u585e\u5c5e\u6027 — \u975e\u963b\u585e
\n void NonBlock()
\n {
\n \/\/ int fcntl(int fd, int cmd, … \/* arg *\/ );
\n int flag = fcntl(_sockfd, F_GETFL, 0); \/\/ FL -> \u6587\u4ef6\u72b6\u6001\u6807\u5fd7
\n fcntl(_sockfd, F_SETFL, flag | O_NONBLOCK);
\n }<\/p>\n
\/\/ \u521b\u5efa\u4e00\u4e2a\u670d\u52a1\u5668\u8fde\u63a5
\n bool CreateServer(uint16_t port, const std::string &ip = "0.0.0.0", bool block_flag = false)
\n {
\n \/\/ 1. \u8bbe\u7f6e\u5957\u63a5\u5b57 2. \u542f\u52a8\u5730\u5740\u590d\u7528 3. \u8bbe\u7f6e\u975e\u963b\u585e 4. \u7ed1\u5b9a\u5730\u5740 5. \u5f00\u59cb\u76d1\u542c
\n if (CreateSocket() == false)
\n return false;
\n ReuseAddress();
\n if (block_flag)
\n NonBlock();
\n if (Bind(ip, port) == false)
\n return false;
\n if (Listen() == false)
\n return false;
\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 {
\n \/\/ 1. \u521b\u5efa\u5957\u63a5\u5b57 2. \u6267\u884c\u8fde\u63a5\u670d\u52a1\u5668
\n if (CreateSocket() == false)
\n return false;
\n if (Connect(ip, port) == false)
\n return false;
\n return true;
\n }
\n \/\/ \u8bbe\u7f6e\u5957\u63a5\u5b57\u9009\u9879 — \u5f00\u542f\u5730\u5740\u590d\u7528
\n \/\/ SO_REUSEADDR: \u89e3\u51b3\u5730\u5740\u7aef\u53e3\u91cd\u7528
\n \/\/ SO_REUSEPORT: \u5141\u8bb8\u591a\u4e2a\u5957\u63a5\u5b57\u5b8c\u5168\u7ed1\u5b9a\u5230\u540c\u4e00\u4e2a\u7aef\u53e3，\u5b9e\u73b0\u8d1f\u8f7d\u5747\u8861
\n void ReuseAddress()
\n {
\n \/\/ \u8bbe\u7f6e\u5957\u63a5\u5b57（socket）\u7684\u9009\u9879
\n \/\/ int setsockopt(int sockfd, int level, int optname,const void *optval, socklen_t optlen);
\n \/\/ level：\u9009\u9879\u5b9a\u4e49\u7684\u534f\u8bae\u5c42 optname：\u5177\u4f53\u9009\u9879\u540d
\n \/\/ SOL_SOCKET（Socket Level）\u8868\u793a\u9009\u9879\u5c5e\u4e8e \u5957\u63a5\u5b57\u5c42（\u901a\u7528 socket \u5c42）
\n \/\/ level = IPPROTO_TCP，\u5219\u53ea\u80fd\u4f7f\u7528 TCP_* \u5f00\u5934\u7684\u9009\u9879（\u5982 TCP_NODELAY）；
\n \/\/ \u82e5 level = IPPROTO_IP，\u5219\u4f7f\u7528 IP_* \u9009\u9879（\u5982 IP_TTL）\u3002
\n int val = 1;
\n setsockopt(_sockfd, SOL_SOCKET, SO_REUSEADDR, (void *)&val, sizeof(int));
\n val = 1;
\n setsockopt(_sockfd, SOL_SOCKET, SO_REUSEPORT, (void *)&val, sizeof(int));
\n }<\/p>\n
private:
\n int _sockfd;
\n };<\/p>\n
}<\/p>\n
#endif<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 Channel：<\/p>\n
#ifndef __CHANNEL__
\n#define __CHANNEL__<\/p>\n
#include <functional>
\n#include <cstdint>
\n#include <memory>
\n#include <sys\/epoll.h><\/p>\n
namespace xxhh
\n{
\n class Poller;<\/p>\n
class Channel : public std::enable_shared_from_this<Channel>
\n {
\n public:
\n using EventCallBack = std::function<void(std::shared_ptr<Channel>)>;<\/p>\n
\/\/ \u6784\u9020\u51fd\u6570：\u9700\u8981 Poller \u6307\u9488，\u7528\u4e8e\u540e\u7eed Update\/Remove
\n Channel(Poller *poller, int fd)
\n : _sockfd(fd), _poll(poller), _events(0), _revents(0) {}<\/p>\n
int Fd() const { return _sockfd; }
\n uint32_t Events() const { return _events; }
\n void SetREvents(uint32_t events) { _revents = events; }<\/p>\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 SetEventCallBack(const EventCallBack &cb) { _event_callback = cb; }<\/p>\n
bool ReadAble() const { return (_events & EPOLLIN); }
\n bool WriteAble() const { return (_events & EPOLLOUT); }<\/p>\n
void EnableRead()
\n {
\n _events |= EPOLLIN;
\n Update();
\n }
\n void EnableWrite()
\n {
\n _events |= EPOLLOUT;
\n Update();
\n }
\n void DisableRead()
\n {
\n _events &= ~EPOLLIN;
\n Update();
\n }
\n void DisableWrite()
\n {
\n _events &= ~EPOLLOUT;
\n Update();
\n }<\/p>\n
void Remove(); \/\/ \u5b9e\u73b0\u89c1 poller.hpp \u5c3e\u90e8
\n void Update(); \/\/ \u5b9e\u73b0\u89c1 poller.hpp \u5c3e\u90e8<\/p>\n
void HandleEvent()
\n {
\n auto self = shared_from_this(); \/\/ \u4fdd\u8bc1\u5728 HandleEvent \u5168\u7a0b\u5bf9\u8c61\u4e0d\u9500\u6bc1<\/p>\n
if ((_revents & EPOLLIN) || (_revents & EPOLLRDHUP) || (_revents & EPOLLPRI))
\n {
\n if (_read_callback)
\n _read_callback(self);
\n }
\n else if (_revents & EPOLLOUT)
\n {
\n if (_write_callback)
\n _write_callback(self);
\n }
\n else if (_revents & EPOLLERR)
\n {
\n if (_error_callback)
\n _error_callback(self);
\n }
\n else if (_revents & EPOLLHUP)
\n {
\n if (_close_callback)
\n _close_callback(self);
\n }
\n if (_event_callback)
\n _event_callback(self);
\n }<\/p>\n
private:
\n int _sockfd;
\n Poller *_poll;
\n uint32_t _events;
\n uint32_t _revents;
\n EventCallBack _read_callback;
\n EventCallBack _write_callback;
\n EventCallBack _error_callback;
\n EventCallBack _close_callback;
\n EventCallBack _event_callback;
\n };
\n}
\n#endif<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 Poller：<\/p>\n
#ifndef __POLLER__
\n#define __POLLER__<\/p>\n
#include <unordered_map>
\n#include <sys\/epoll.h>
\n#include <vector>
\n#include <cstring>
\n#include <cassert>
\n#include <memory>
\n#include "log.hpp"
\n#include "channel.hpp"<\/p>\n
namespace xxhh
\n{
\n#define MAX_EPOLLEVENTS 1024<\/p>\n
class Poller
\n {
\n private:
\n void Update(std::shared_ptr<Channel> channel, int op)
\n {
\n int fd = channel->Fd();
\n struct epoll_event ev;
\n ev.events = channel->Events();
\n ev.data.fd = fd;
\n int ret = epoll_ctl(_epfd, op, fd, &ev);
\n if (ret < 0)
\n {
\n switch (op)
\n {
\n case EPOLL_CTL_ADD:
\n ERR_LOG("EPOLL_CTL_ADD Failed!");
\n break;
\n case EPOLL_CTL_DEL:
\n ERR_LOG("EPOLL_CTL_DEL Failed!");
\n break;
\n case EPOLL_CTL_MOD:
\n ERR_LOG("EPOLL_CTL_MOD Failed!");
\n break;
\n }
\n }
\n }<\/p>\n
bool IsExitChannel(int fd) const
\n {
\n return _channels.find(fd) != _channels.end();
\n }<\/p>\n
public:
\n Poller()
\n {
\n _epfd = epoll_create(MAX_EPOLLEVENTS);
\n if (_epfd < 0)
\n {
\n ERR_LOG("Poller Create Error!");
\n abort();
\n }
\n }<\/p>\n
~Poller() { close(_epfd); }<\/p>\n
void UpdateEvent(std::shared_ptr<Channel> channel)
\n {
\n int fd = channel->Fd();
\n if (!IsExitChannel(fd))
\n {
\n _channels[fd] = channel;
\n Update(channel, EPOLL_CTL_ADD);
\n }
\n else
\n {
\n Update(channel, EPOLL_CTL_MOD);
\n }
\n }<\/p>\n
void RemoveEvent(std::shared_ptr<Channel> channel)
\n {
\n int fd = channel->Fd();
\n auto it = _channels.find(fd);
\n if (it != _channels.end())
\n {
\n _channels.erase(it);
\n }
\n Update(channel, EPOLL_CTL_DEL);
\n }<\/p>\n
void Poll(std::vector<std::shared_ptr<Channel>> *active)
\n {
\n int nfds = epoll_wait(_epfd, _evs, MAX_EPOLLEVENTS, -1);
\n if (nfds < 0)
\n {
\n if (errno == EINTR)
\n return;
\n ERR_LOG("Epoll Wait Error: %s\\\\n", strerror(errno));
\n abort();
\n }
\n for (int i = 0; i < nfds; ++i)
\n {
\n int fd = _evs[i].data.fd;
\n auto it = _channels.find(fd);
\n assert(it != _channels.end());
\n it->second->SetREvents(_evs[i].events);
\n active->push_back(it->second);
\n }
\n }<\/p>\n
private:
\n int _epfd;
\n struct epoll_event _evs[MAX_EPOLLEVENTS];
\n std::unordered_map<int, std::shared_ptr<Channel>> _channels;
\n };
\n}<\/p>\n
void xxhh::Channel::Remove() { _poll->RemoveEvent(shared_from_this()); }
\nvoid xxhh::Channel::Update() { _poll->UpdateEvent(shared_from_this()); }<\/p>\n
#endif<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u4e0b\u9762\u7684\u6d4b\u8bd5\u4ee3\u7801，\u5176\u5b9e\u5c31\u662f\u6211\u4eec Reactor \u7684\u96cf\u5f62\u4e86，\u5927\u5bb6\u9700\u8981\u4ed4\u7ec6\u53bb\u770b，\u91cc\u9762\u7684\u4e00\u4e9b\u5185\u5bb9，\u6211\u4eec\u4f1a\u5728\u540e\u9762\u8fdb\u884c\u5c01\u88c5\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7406\u8bba\u8bb2\u5b8c，\u4ee3\u7801\u5199\u5b8c，\u73b0\u5728\u6211\u4eec\u6765\u9a8c\u8bc1\u4e00\u4e0b Channel + Poller \u662f\u5426\u771f\u7684\u80fd\u5de5\u4f5c\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684 echo \u670d\u52a1\u5668 \u6d4b\u8bd5\u7a0b\u5e8f，\u5b83\u4f7f\u7528\u4e86\u6211\u4eec\u521a\u521a\u5c01\u88c5\u7684 Socket\u3001Poller \u548c Channel\u3002<\/p>\n
#include "..\/source\/socket.hpp"
\n#include "..\/source\/poller.hpp"
\n#include <memory>
\n#include <iostream><\/p>\n
using namespace xxhh;<\/p>\n
void HandleClose(std::shared_ptr<Channel> channel)
\n{
\n std::cout << "close: " << channel->Fd() << std::endl;
\n channel->Remove(); \/\/ \u4ec5\u4ece epoll \u79fb\u9664，\u4e0d delete
\n \/\/ channel \u7684 shared_ptr \u4f1a\u81ea\u52a8\u91ca\u653e，\u65e0\u9700\u989d\u5916\u64cd\u4f5c
\n}<\/p>\n
void HandleRead(std::shared_ptr<Channel> channel)
\n{
\n int fd = channel->Fd();
\n char buf[1024] = {0};
\n int ret = recv(fd, buf, sizeof(buf) – 1, 0);
\n if (ret <= 0)
\n {
\n HandleClose(channel);
\n return;
\n }
\n std::cout << "recv: " << buf << std::endl;
\n channel->EnableWrite(); \/\/ \u542f\u52a8\u53ef\u5199\u4e8b\u4ef6
\n}<\/p>\n
void HandleWrite(std::shared_ptr<Channel> channel)
\n{
\n int fd = channel->Fd();
\n const char *msg = "\u5929\u6c14\u597d";
\n int ret = send(fd, msg, strlen(msg), 0);
\n if (ret < 0)
\n {
\n HandleClose(channel);
\n return;
\n }
\n channel->DisableWrite(); \/\/ \u5199\u5b8c\u5173\u95ed\u5199\u76d1\u63a7
\n}<\/p>\n
void HandleError(std::shared_ptr<Channel> channel)
\n{
\n HandleClose(channel);
\n}<\/p>\n
void HandleEvent(std::shared_ptr<Channel> channel)
\n{
\n std::cout << "\u6709\u4e86\u4e00\u4e2a\u4e8b\u60c5" << std::endl;
\n}<\/p>\n
void Acceptor(Poller *poll, std::shared_ptr<Channel> listen_channel)
\n{
\n int fd = listen_channel->Fd();
\n int newFd = accept(fd, nullptr, nullptr);
\n if (newFd < 0)
\n return;<\/p>\n
auto channel = std::make_shared<Channel>(poll, newFd);
\n channel->SetReadCallBack(HandleRead);
\n channel->SetWriteCallBack(HandleWrite);
\n channel->SetCloseCallBack(HandleClose);
\n channel->SetErrorCallBack(HandleError);
\n channel->SetEventCallBack(HandleEvent);
\n channel->EnableRead(); \/\/ \u5f00\u59cb\u76d1\u63a7\u65b0\u8fde\u63a5\u7684\u8bfb\u4e8b\u4ef6
\n}<\/p>\n
int main()
\n{
\n Socket tcpSocket;
\n tcpSocket.CreateServer(8080);<\/p>\n
Poller poll;
\n auto listen_channel = std::make_shared<Channel>(&poll, tcpSocket.Fd());
\n listen_channel->SetReadCallBack(std::bind(Acceptor, &poll, listen_channel));
\n listen_channel->EnableRead();<\/p>\n
while (1)
\n {
\n std::vector<std::shared_ptr<Channel>> active;
\n poll.Poll(&active);
\n for (auto &ch : active)
\n {
\n ch->HandleEvent();
\n }
\n }
\n tcpSocket.Close();
\n return 0;
\n}<\/p>\n
#include "..\/source\/socket.hpp"
\nusing namespace xxhh;
\nint main()
\n{
\n Socket clientSock;
\n clientSock.CreateClient(8080, "127.0.0.1");
\n while (1)
\n {
\n std::string str = "Hello world";
\n clientSock.Send((void *)str.c_str(), str.size());
\n char buf[1024] = {0};
\n clientSock.Recv(buf, 1023);
\n DBG_LOG("%s", buf);
\n sleep(1);
\n }
\n return 0;
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4ece\u96f6\u624b\u5199\u9ad8\u6027\u80fd C TCP \u670d\u52a1\u5668\u6846\u67b6（\u4e03）：Channel\u6a21\u5757\u548cPoller\u6a21\u5757\u5b9e\u73b0\u4e00\u3001\u524d\u7f6e\u77e5\u8bc6\u4ecb\u7ecd\u00a0epoll\u00a0epoll \u662f Linux \u5185\u6838\u63d0\u4f9b\u7684\u4e00\u79cd\u53ef\u6269\u5c55\u7684 I\/O \u4e8b\u4ef6\u901a\u77e5\u673a\u5236，\u4e13\u95e8\u7528\u4e8e\u9ad8\u6548\u5730\u76d1\u63a7\u5927\u91cf\u6587\u4ef6\u63cf\u8ff0\u7b26（\u5982 socket\u3001\u7ba1\u9053\u3001\u7ec8\u7aef\u7b49），\u7b49\u5f85\u5176\u4e2d\u7684\u67d0\u4e9b\u53d8\u4e3a\u53ef\u8bfb\u3001\u53ef\u5199\u6216\u53d1\u751f\u5f02\u5e38\u3002\u5b83\u662f\u4f20\u7edf select \u548c poll \u7684\u66ff\u4ee3\u65b9\u6848，\u8bbe\u8ba1\u4e0a\u89e3\u51b3\u4e86\u540e\u4e24\u8005\u5728<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,58,205,43],"topic":[],"class_list":["post-85705","post","type-post","status-publish","format-standard","hentry","category-server","tag-c","tag-linux","tag-tcp-ip","tag-43"],"yoast_head":"\n