{"id":379,"date":"2019-11-23T20:58:35","date_gmt":"2019-11-23T12:58:35","guid":{"rendered":"https:\/\/www.ccagml.com\/?p=379"},"modified":"2021-04-28T20:59:36","modified_gmt":"2021-04-28T12:59:36","slug":"redis%e6%ba%90%e7%a0%81%e4%bb%8emain%e5%bc%80%e5%a7%8b4","status":"publish","type":"post","link":"https:\/\/www.ccagml.com\/?p=379","title":{"rendered":"redis\u6e90\u7801\u4ecemain\u5f00\u59cb4"},"content":{"rendered":"\n<p>\u5728redis\u6e90\u7801\u4ecemain\u5f00\u59cb3\u4e2d\u521b\u5efa\u4e86\u76d1\u542c\uff0c\u770b\u5230\u4f7f\u7528aeCreateFileEvent\u521b\u5efa\u4e00\u4e2a\u4e8b\u4ef6\u76d1\u542c\u7684\u5904\u7406\u65b9\u6cd5\uff0c\u5728redis\u4e2d\u6709\u4e24\u79cd\u4e8b\u4ef6\u5faa\u73af\uff0c\u4e00\u79cd\u662f\u65f6\u95f4\u7684\u4e8b\u4ef6\uff0c\u4e00\u79cd\u662f\u6587\u4ef6\u7684\u4e8b\u4ef6\uff0c\u521b\u5efa\u7684\u65b9\u6cd5\u5206\u522b\u662faeCreateTimeEvent\u548caeCreateFileEvent\uff0c\u4e0b\u9762\u6211\u4eec\u90a3\u770b\u4e24\u79cd\u4e8b\u4ef6\u7684\u7ed3\u6784\u4f53<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>redis.c\n\u521b\u5efa\u4e24\u79cd\u4e8b\u4ef6\u5faa\u73af\n(aeCreateTimeEvent(server.el, 1, serverCron, NULL, NULL) == AE_ERR)\n(aeCreateFileEvent(server.el, server.ipfd[j], AE_READABLE, acceptTcpHandler, NULL) == AE_ERR)\n\n    \/* Time event structure\n *\n * \u65f6\u95f4\u4e8b\u4ef6\u7ed3\u6784\n *\/\n    typedef struct aeTimeEvent\n{\n\n    \/\/ \u65f6\u95f4\u4e8b\u4ef6\u7684\u552f\u4e00\u6807\u8bc6\u7b26\n    long long id; \/* time event identifier. *\/\n\n    \/\/ \u4e8b\u4ef6\u7684\u5230\u8fbe\u65f6\u95f4\n    long when_sec; \/* seconds *\/\n    long when_ms;  \/* milliseconds *\/\n\n    \/\/ \u4e8b\u4ef6\u5904\u7406\u51fd\u6570\n    aeTimeProc *timeProc;\n\n    \/\/ \u4e8b\u4ef6\u91ca\u653e\u51fd\u6570\n    aeEventFinalizerProc *finalizerProc;\n\n    \/\/ \u591a\u8def\u590d\u7528\u5e93\u7684\u79c1\u6709\u6570\u636e\n    void *clientData;\n\n    \/\/ \u6307\u5411\u4e0b\u4e2a\u65f6\u95f4\u4e8b\u4ef6\u7ed3\u6784\uff0c\u5f62\u6210\u94fe\u8868\n    struct aeTimeEvent *next;\n\n} aeTimeEvent;\n\n\/* State of an event based program \n *\n * \u4e8b\u4ef6\u5904\u7406\u5668\u7684\u72b6\u6001\n *\/\ntypedef struct aeEventLoop\n{\n\n    \/\/ \u76ee\u524d\u5df2\u6ce8\u518c\u7684\u6700\u5927\u63cf\u8ff0\u7b26\n    int maxfd; \/* highest file descriptor currently registered *\/\n\n    \/\/ \u76ee\u524d\u5df2\u8ffd\u8e2a\u7684\u6700\u5927\u63cf\u8ff0\u7b26\n    int setsize; \/* max number of file descriptors tracked *\/\n\n    \/\/ \u7528\u4e8e\u751f\u6210\u65f6\u95f4\u4e8b\u4ef6 id\n    long long timeEventNextId;\n\n    \/\/ \u6700\u540e\u4e00\u6b21\u6267\u884c\u65f6\u95f4\u4e8b\u4ef6\u7684\u65f6\u95f4\n    time_t lastTime; \/* Used to detect system clock skew *\/\n\n    \/\/ \u5df2\u6ce8\u518c\u7684\u6587\u4ef6\u4e8b\u4ef6\n    aeFileEvent *events; \/* Registered events *\/\n\n    \/\/ \u5df2\u5c31\u7eea\u7684\u6587\u4ef6\u4e8b\u4ef6\n    aeFiredEvent *fired; \/* Fired events *\/\n\n    \/\/ \u65f6\u95f4\u4e8b\u4ef6\n    aeTimeEvent *timeEventHead;\n\n    \/\/ \u4e8b\u4ef6\u5904\u7406\u5668\u7684\u5f00\u5173\n    int stop;\n\n    \/\/ \u591a\u8def\u590d\u7528\u5e93\u7684\u79c1\u6709\u6570\u636e\n    void *apidata; \/* This is used for polling API specific data *\/\n\n    \/\/ \u5728\u5904\u7406\u4e8b\u4ef6\u524d\u8981\u6267\u884c\u7684\u51fd\u6570\n    aeBeforeSleepProc *beforesleep;\n\n} aeEventLoop;\n\n\/*\n * \u521b\u5efa\u65f6\u95f4\u4e8b\u4ef6\n *\/\nlong long aeCreateTimeEvent(aeEventLoop *eventLoop, long long milliseconds,\n                            aeTimeProc *proc, void *clientData,\n                            aeEventFinalizerProc *finalizerProc)\n{\n    \/\/ \u66f4\u65b0\u65f6\u95f4\u8ba1\u6570\u5668\n    long long id = eventLoop->timeEventNextId++;\n\n    \/\/ \u521b\u5efa\u65f6\u95f4\u4e8b\u4ef6\u7ed3\u6784\n    aeTimeEvent *te;\n\n    te = zmalloc(sizeof(*te));\n    if (te == NULL)\n        return AE_ERR;\n\n    \/\/ \u8bbe\u7f6e ID\n    te->id = id;\n\n    \/\/ \u8bbe\u5b9a\u5904\u7406\u4e8b\u4ef6\u7684\u65f6\u95f4\n    aeAddMillisecondsToNow(milliseconds, &amp;te->when_sec, &amp;te->when_ms);\n    \/\/ \u8bbe\u7f6e\u4e8b\u4ef6\u5904\u7406\u5668\n    te->timeProc = proc;\n    te->finalizerProc = finalizerProc;\n    \/\/ \u8bbe\u7f6e\u79c1\u6709\u6570\u636e\n    te->clientData = clientData;\n\n    \/\/ \u5c06\u65b0\u4e8b\u4ef6\u653e\u5165\u8868\u5934\n    te->next = eventLoop->timeEventHead;\n    eventLoop->timeEventHead = te;\n\n    return id;\n}\n\n\/*\n * \u6839\u636e mask \u53c2\u6570\u7684\u503c\uff0c\u76d1\u542c fd \u6587\u4ef6\u7684\u72b6\u6001\uff0c\n * \u5f53 fd \u53ef\u7528\u65f6\uff0c\u6267\u884c proc \u51fd\u6570\n *\/\nint aeCreateFileEvent(aeEventLoop *eventLoop, int fd, int mask,\n                      aeFileProc *proc, void *clientData)\n{\n    if (fd >= eventLoop->setsize)\n    {\n        errno = ERANGE;\n        return AE_ERR;\n    }\n\n    if (fd >= eventLoop->setsize)\n        return AE_ERR;\n\n    \/\/ \u53d6\u51fa\u6587\u4ef6\u4e8b\u4ef6\u7ed3\u6784\n    aeFileEvent *fe = &amp;eventLoop->events[fd];\n\n    \/\/ \u76d1\u542c\u6307\u5b9a fd \u7684\u6307\u5b9a\u4e8b\u4ef6\n    if (aeApiAddEvent(eventLoop, fd, mask) == -1)\n        return AE_ERR;\n\n    \/\/ \u8bbe\u7f6e\u6587\u4ef6\u4e8b\u4ef6\u7c7b\u578b\uff0c\u4ee5\u53ca\u4e8b\u4ef6\u7684\u5904\u7406\u5668\n    fe->mask |= mask;\n    if (mask &amp; AE_READABLE)\n        fe->rfileProc = proc;\n    if (mask &amp; AE_WRITABLE)\n        fe->wfileProc = proc;\n\n    \/\/ \u79c1\u6709\u6570\u636e\n    fe->clientData = clientData;\n\n    \/\/ \u5982\u679c\u6709\u9700\u8981\uff0c\u66f4\u65b0\u4e8b\u4ef6\u5904\u7406\u5668\u7684\u6700\u5927 fd\n    if (fd > eventLoop->maxfd)\n        eventLoop->maxfd = fd;\n\n    return AE_OK;\n}\n<\/code><\/pre>\n\n\n\n<p><a href=\"https:\/\/download.redis.io\/releases\/redis-3.0.0.tar.gz\" target=\"_blank\" rel=\"noopener\">\u57fa\u4e8e\u7248\u672c3.0.0\u7248\u672c,<\/a>\u70b9\u51fb\u4e0b\u8f7dhttps:\/\/download.redis.io\/releases\/redis-3.0.0.tar.gz<\/p>\n\n\n\n<p><a href=\"https:\/\/www.ccagml.com\/?p=379\">\u672c\u6587\u5730\u5740<\/a>\uff0chttps:\/\/www.ccagml.com\/?p=379<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728redis\u6e90\u7801\u4ecemain\u5f00\u59cb3\u4e2d\u521b\u5efa\u4e86\u76d1\u542c\uff0c\u770b\u5230\u4f7f\u7528aeCreateFileEvent\u521b\u5efa\u4e00\u4e2a\u4e8b\u4ef6\u76d1\u542c\u7684\u5904\u7406<a href=\"https:\/\/www.ccagml.com\/?p=379\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">redis\u6e90\u7801\u4ecemain\u5f00\u59cb4<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[31,22],"tags":[],"_links":{"self":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts\/379"}],"collection":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=379"}],"version-history":[{"count":2,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts\/379\/revisions"}],"predecessor-version":[{"id":381,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts\/379\/revisions\/381"}],"wp:attachment":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=379"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=379"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=379"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}