{"id":540,"date":"2014-09-27T10:09:35","date_gmt":"2014-09-27T02:09:35","guid":{"rendered":"http:\/\/www.shuran.cn\/?p=540"},"modified":"2014-09-27T10:09:35","modified_gmt":"2014-09-27T02:09:35","slug":"php%e5%a4%9a%e8%bf%9b%e7%a8%8b%e7%9a%84%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/www.shuran.cn\/?p=540","title":{"rendered":"PHP\u591a\u8fdb\u7a0b\u7684\u5b9e\u73b0"},"content":{"rendered":"<pre class=\"prettyprint lang-js\">&lt;?php\r\n    set_time_limit(0);\r\n    ini_set('memory_limit', '1024M');\r\n  \r\n    \/\/\u914d\u5408pcntl_signal\u4f7f\u7528\r\n    declare(ticks=1);\r\n    \/\/\u6700\u5927\u7684\u5b50\u8fdb\u7a0b\u6570\u91cf\r\n    $max = 30;\r\n    \/\/\u5f53\u524d\u7684\u5b50\u8fdb\u7a0b\u6570\u91cf\r\n    $child = 0;\r\n    \/\/\u5f53\u5b50\u8fdb\u7a0b\u9000\u51fa\u65f6\uff0c\u4f1a\u89e6\u53d1\u8be5\u51fd\u6570\r\n    function sig_handler($sig)\r\n    {\r\n        global $child;\r\n        switch($sig) {\r\n        case SIGCHLD:\r\n            \/\/echo 'SIGCHLD received'.\"\\n\";\r\n            $child--;\r\n        }\r\n    }\r\n  \r\n    \/\/\u6ce8\u518c\u5b50\u8fdb\u7a0b\u9000\u51fa\u65f6\u8c03\u7528\u7684\u51fd\u6570\r\n    pcntl_signal(SIGCHLD, \"sig_handler\");\r\n  \r\n    while(true)\r\n    {\r\n        $child++;\r\n     \r\n        if(****) \/\/ \u6839\u636e\u5b9e\u9645\u4e1a\u52a1\u8bbe\u8ba1\u9000\u51fa\u6761\u4ef6\r\n        {\r\n          break;\r\n     }\r\n  \r\n        $pid = pcntl_fork();\r\n        if (-1 == $pid)\r\n        {\r\n            echo date(\"H:i:s\").\" error : \u00d7\u00d7\u00d7\u00d7\u00d7\u00d7\u00d7\";\/\/ \u521b\u5efa\u8fdb\u7a0b\u5931\u8d25\uff0c\u6253\u5370\u9519\u8bef\u4fe1\u606f\r\n        }\r\n        else if (!$pid)\r\n        {\r\n        \/\/ \u4e1a\u52a1\u903b\u8f91\u4ee3\u7801\r\n            \/\/ todo...\r\n\r\n            exit; \/\/ \u6700\u597d\u8981\u6709\u8be5\u8bed\u53e5\r\n       }\r\n        else\r\n        {\r\n            if ($child &gt;= $max)\r\n            {\r\n                pcntl_waitpid($pid, $status);\r\n            }\r\n        }\r\n    }\r\n\r\n<\/pre>\n<p>\n\t1.\u591a\u8fdb\u7a0b\u4e4b\u95f4\u7684\u4efb\u52a1\u5206\u914d\uff0c\u6bd4\u5982\u4e00\u4e2a\u8868\uff0c\u6bcf\u542f\u52a8\u4e00\u4e2a\u8fdb\u7a0b\u65f6\u53ef\u80fd\u8981\u5206\u914d\u4e00\u4e2aid\u6bb5\u7ed9\u8be5\u8fdb\u7a0b\u8d1f\u8d23 <br \/>\n2.\u8bbe\u7f6e\u6700\u5927\u8fdb\u7a0b\u5e76\u53d1\u6570\uff0c\u8981\u6839\u636e\u673a\u5668\u7684\u6027\u80fd\u8d44\u6e90\u8fdb\u884c\u8bbe\u7f6e\uff0c\u5185\u5b58\u3001cpu\u90fd\u8981\u8003\u8651 <br \/>\n3.\u5982\u679c\u62a5\u5f02\u5e38\uff1apcntl_fork(): Error 11\uff0c\u5219\u9700\u8981\u5bf9\u5f53\u524d\u7528\u6237\u8bbe\u7f6e\u6700\u591a\u8fde\u63a5\u6570\uff0c<br \/>\n         \u547d\u4ee4\u4e3a\uff1alimit -u 9999 \uff0c\u8fd9\u6837\u5c31\u8bbe\u7f6e\u4e3a\u4e869999,\u9ed8\u8ba4\u662f1024\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&lt;?php set_time_limit(0); ini_set('memory_limit', '10\u2026 <span class=\"read-more\"><a href=\"https:\/\/www.shuran.cn\/?p=540\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-540","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/540","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=540"}],"version-history":[{"count":1,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/540\/revisions"}],"predecessor-version":[{"id":541,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/540\/revisions\/541"}],"wp:attachment":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}