{"id":625,"date":"2012-09-14T22:34:23","date_gmt":"2012-09-14T14:34:23","guid":{"rendered":"http:\/\/www.myvoipapp.com\/blogs\/yxh\/?p=625"},"modified":"2019-02-12T20:11:51","modified_gmt":"2019-02-12T12:11:51","slug":"mkfifo%e4%b8%8eselect","status":"publish","type":"post","link":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/2012\/09\/14\/mkfifo%e4%b8%8eselect\/","title":{"rendered":"mkfifo\u4e0eselect"},"content":{"rendered":"<p>\u57fa\u672c\u4e0a\uff0c\u521b\u5efa\u6709\u540d\u7ba1\u9053\u548c\u5e73\u5e38\u7684\u6587\u4ef6\u64cd\u4f5c\u6ca1\u6709\u592a\u5927\u7684\u5dee\u522b\u3002\u5728\u7528select\u5bf9\u6709\u540d\u7ba1\u9053\u53e5\u67c4\u8fdb\u884c\u64cd\u4f5c\u65f6\uff0c\u6709\u4e9b\u6bd4\u8f83\u5947\u602a\u7684\u5730\u65b9\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u7a0b\u5e8f\uff08\u8fdb\u7a0b\uff09\uff0c\u4e00\u4e2a\u5411\u6709\u540d\u7ba1\u9053\u5199\uff0c\u53e6\u4e00\u4e2a\u8d1f\u8d23\u4ece\u6709\u540d\u7ba1\u9053\u8bfb\u3002\u903b\u8f91\u5f88\u7b80\u5355\uff0c\u56e0\u6b64\u6211\u4eec\u5f88\u81ea\u7136\u5730\u5728\u8bfb\u8fdb\u7a0b\u7a0b\u5e8f\u4e2d\u8bbe\u7f6eread_only\uff0c\u7136\u540e\u7528select\u7b49\u5f85\u6570\u636e\u3002<\/p>\n<p>\u5947\u602a\u7684\u4e8b\u60c5\u53d1\u751f\u4e86\uff0cselect\u603b\u662f\u80fd\u8fd4\u56de\u6210\u529f\uff0c\u53ef\u662fread\u7684\u6570\u636e\u4e3a\u7a7a\u3002\u8fd9\u4e2a\u95ee\u9898\u8ba9\u6211\u4eec\u767e\u601d\u4e0d\u5f97\u5176\u89e3\uff0c\u7ed3\u679cgoogle\u540e\u53d1\u73b0\uff0c\u5bf9\u4e8e\u53ea\u8bfb\u7684\u6709\u540d\u7ba1\u9053\uff0c\u4e5f\u9700\u8981\u8bbe\u7f6e\u4e3a\u201c\u8bfb\u5199\u201d\u6a21\u5f0f\uff0c\u5426\u5219\u5b83\u5bf9select\u603b\u662f\u4f1a\u7acb\u523b\u8fd4\u56de\u6210\u529f\u3002<\/p>\n<p>\u7ecf\u8fc7\u591a\u6b21\u6d4b\u8bd5\uff0c\u5bf9linux\u4e0b\u7684\u6709\u540d\u7ba1\u9053\uff0c\u5982\u679c\u91c7\u7528select\u5224\u65ad\u662f\u5426\u53ef\u8bfb\uff0c\u9700\u8981\u8bbe\u7f6e\u4ee5\u4e0b\u53c2\u6570\uff1a<\/p>\n<p>\uff081\uff09\u975e\u963b\u585e<\/p>\n<p>\uff082\uff09\u53ef\u8bfb\u53ef\u5199<\/p>\n<p>\u4f8b\u5982\u4ee5\u4e0b\u6f14\u793a\u4ee3\u7801\uff1a<\/p>\n<pre>fd = open(COMMAND_PIPE, <span style=\"color: #ff0000;\">O_NONBLOCK | O_RDWR<\/span>);\r\n... ...\r\nint ret = select(fd+1, &amp;read_set, NULL, NULL, &amp;timeVal);<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u57fa\u672c\u4e0a\uff0c\u521b\u5efa\u6709\u540d\u7ba1\u9053\u548c\u5e73\u5e38\u7684\u6587\u4ef6\u64cd\u4f5c\u6ca1\u6709\u592a\u5927\u7684\u5dee\u522b\u3002\u5728\u7528select\u5bf9\u6709\u540d\u7ba1\u9053\u53e5\u67c4\u8fdb\u884c\u64cd\u4f5c\u65f6\uff0c\u6709\u4e9b\u6bd4\u8f83\u5947\u602a\u7684\u5730\u65b9\u3002 \u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u7a0b\u5e8f\uff08\u8fdb\u7a0b\uff09\uff0c\u4e00\u4e2a\u5411\u6709\u540d\u7ba1\u9053&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.myvoipapp.com\/blogs\/yxh\/2012\/09\/14\/mkfifo%e4%b8%8eselect\/\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53],"tags":[241,60,31,242],"class_list":["post-625","post","type-post","status-publish","format-standard","hentry","category-53","tag-pipe","tag-select","tag-ubuntu","tag-242"],"_links":{"self":[{"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/posts\/625","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/comments?post=625"}],"version-history":[{"count":3,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/posts\/625\/revisions"}],"predecessor-version":[{"id":1847,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/posts\/625\/revisions\/1847"}],"wp:attachment":[{"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/media?parent=625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/categories?post=625"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/tags?post=625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}