{"id":628,"date":"2017-01-05T15:42:13","date_gmt":"2017-01-05T07:42:13","guid":{"rendered":"http:\/\/www.5x44.cn\/?p=628"},"modified":"2017-01-05T15:42:13","modified_gmt":"2017-01-05T07:42:13","slug":"%e5%8f%af%e9%9d%a0%e7%9a%84%e4%bf%a1%e5%8f%b7%e6%9c%af%e8%af%ad%e5%92%8c%e8%af%ad%e4%b9%89","status":"publish","type":"post","link":"https:\/\/www.5x44.cn\/?p=628","title":{"rendered":"\u53ef\u9760\u7684\u4fe1\u53f7\u672f\u8bed\u548c\u8bed\u4e49"},"content":{"rendered":"<p>\u6211\u4eec\u9700\u8981\u5b9a\u4e49\u4e00\u4e9b\u672f\u8bed\u7528\u4e8e\u6211\u4eec\u8ba8\u8bba\u4fe1\u53f7\u3002\u9996\u5148\uff0c\u5f53\u67d0\u4e2a\u5f15\u53d1\u4fe1\u53f7\u7684\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0c\u4fe1\u53f7\u662f\u4e3a\u4e00\u4e2a\u8fdb\u7a0b<strong><em>\u4ea7\u751f(generation)<\/em><\/strong>\u7684\uff08\u6216\u53d1\u9001\u5230\u4e00\u4e2a\u8fdb\u7a0b\uff09\u3002\u8fd9\u4e2a\u4e8b\u4ef6\u53ef\u80fd\u662f\u4e00\u4e2a\u786c\u4ef6\u5f02\u5e38\uff08\u5982\uff1a\u9664\u6570\u4e3a0\uff09\u3001\u4e00\u4e2a\u8f6f\u4ef6\u6761\u4ef6\uff08\u5982\uff1a<span style=\"color: #993300;\">alarm<\/span>\u8ba1\u65f6\u95f4\u8d85\u65f6\uff09\u3001\u4e00\u4e2a\u7ec8\u7aef\u4ea7\u751f\u7684\u4fe1\u53f7\u6216\u8c03\u7528\u4e86<span style=\"color: #993300;\">kill<\/span>\u51fd\u6570\u3002\u5f53\u4ea7\u751f\u4e86\u4fe1\u53f7\u65f6\uff0c\u5185\u6838\u901a\u5e38\u5728\u8fdb\u7a0b\u8868\u4e2d\u8bbe\u7f6e\u4e00\u4e9b\u5f62\u5f0f\u7684\u6807\u8bb0\u3002<\/p>\n<p>\u5f53\u4e00\u4e2a\u4fe1\u53f7\u5df2\u7ecf\u8bbe\u7f6e\u4e86\u52a8\u4f5c\uff0c\u6211\u4eec\u8bf4\u8fd9\u4e2a\u4fe1\u53f7\u5df2\u7ecf<strong><em>\u4ea4\u4ed8\uff08delivery\uff09<\/em><\/strong>\u7ed9\u4e86\u8fdb\u7a0b\u3002\u5728\u4e00\u4e2a\u4fe1\u53f7\u4ea7\u751f\u540e\u548c\u4ea4\u4ed8\u4e4b\u95f4\u7684\u8fd9\u6bb5\u65f6\u95f4\u88ab\u79f0\u4f5c<strong><em>\u51c6\u5907<\/em><em>\uff08pending\uff09<\/em><\/strong>\u3002<\/p>\n<p>\u8fdb\u7a0b\u6709<strong><em>\u963b\u585e<\/em><em>\uff08blocking\uff09<\/em><\/strong>\u4fe1\u53f7\u4ea4\u4ed8\u7684\u9009\u9879\u3002\u5982\u679c\u4e00\u4e2a\u4fe1\u53f7\u88ab\u963b\u585e\u5e76\u4e14\u8be5\u4fe1\u53f7\u7684\u52a8\u4f5c\u8981\u4e48\u662f\u9ed8\u8ba4\u8981\u4e48\u662f\u6355\u83b7\uff0c\u90a3\u4e48\u8fd9\u4e2a\u4fe1\u53f7\u4e3a\u8fdb\u7a0b\u4fdd\u7559\u4e86\u51c6\u5907\u65f6\u95f4\uff0c\u76f4\u5230\u8981\u4e48\uff08a\uff09\u89e3\u9664\u8be5\u4fe1\u53f7\u7684\u963b\u585e\u6216\uff08b\uff09\u6539\u53d8\u4fe1\u53f7\u7684\u52a8\u4f5c\u4e3a\u5ffd\u7565\u3002\u7cfb\u7edf\u51b3\u5b9a\u5f53\u4fe1\u53f7\u4ea4\u4ed8\u65f6\u88ab\u963b\u585e\u7684\u4fe1\u53f7\u8981\u4f5c\u4e9b\u4ec0\u4e48\uff0c\u800c\u4e0d\u662f\u5f53\u4fe1\u53f7\u88ab\u4ea7\u751f\u65f6\u3002\u8fd9\u5141\u8bb8\u8fdb\u7a0b\u5728\u4fe1\u53f7\u88ab\u4ea4\u4ed8\u524d\u6539\u53d8\u5b83\u7684\u52a8\u4f5c\u3002<span style=\"color: #993300;\">sigpending<\/span>\u51fd\u6570\u53ef\u4ee5\u88ab\u8fdb\u7a0b\u8c03\u7528\uff0c\u7528\u4e8e\u51b3\u5b9a\u54ea\u4e9b\u4fe1\u53f7\u88ab\u963b\u585e\u548c\u51c6\u5907\u3002<\/p>\n<p>\u5982\u679c\u4e00\u4e2a\u88ab\u963b\u585e\u7684\u4fe1\u53f7\u5728\u89e3\u9664\u963b\u585e\u4e4b\u524d\u4ea7\u751f\u4e86\u4e0d\u6b62\u4e00\u6b21\uff0c\u90a3\u4e48\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1fPOSIX.1\u5141\u8bb8\u7cfb\u7edf\u4ea4\u4ed8\u4fe1\u53f7\u4e00\u6b21\u6216\u591a\u6b21\u3002\u5982\u679c\u7cfb\u7edf\u4ea4\u4ed8\u4fe1\u53f7\u8d85\u8fc7\u4e00\u6b21\uff0c\u6211\u4eec\u8bf4\u4fe1\u53f7\u88ab<strong><em>\u6392\u961f<\/em><\/strong>\u3002\u591a\u6570UNIX\u7cfb\u7edf\uff0c\u5e76\u4e0d\u6392\u961f\u4fe1\u53f7\uff0c\u9664\u975e\u5b83\u4eec\u652f\u6301\u5b9e\u65f6\u6269\u5c55\u5230POSIX.1\u3002\u800c\u591a\u6570UNIX\u5185\u6838\u4ea4\u4ed8\u4fe1\u53f7\u4e00\u6b21\u3002<\/p>\n<p><em>SVR2\u7684\u624b\u518c\u5ba3\u79f0\u5f53\u8fdb\u7a0b\u6b63\u5728\u6267\u884c<span style=\"color: #993300;\">SIGCLD<\/span>\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u7684\u540c\u65f6\uff0c\u8fd9\u65f6\u4ea7\u751f\u7684<span style=\"color: #993300;\">SIGCLD<\/span>\u4fe1\u53f7\u4f1a\u88ab\u6392\u961f\u3002\u867d\u7136\u8fd9\u5728\u6982\u5ff5\u5c42\u4e0a\u662f\u771f\u5b9e\u7684\uff0c\u4f46\u662f\u5728\u5b9e\u9645\u7684\u5b9e\u73b0\u4e0a\u6709\u6240\u4e0d\u540c\u3002\u4fe1\u53f7\u4f1a\u88ab\u5185\u6838\u91cd\u65b0\u751f\u6210(\u5c31\u50cf\u5728APUE 10.7\u8282\u63cf\u8ff0\u7684\u90a3\u6837)\u3002\u5728SVR3\u4e2d\uff0c\u5f53\u8fdb\u7a0b\u6b63\u5728\u6267\u884c<span style=\"color: #993300;\">SIGCLD<\/span>\u7684\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u7684\u540c\u65f6\u4ea7\u751f\u7684<span style=\"color: #993300;\">SIGCLD<\/span>\u4fe1\u53f7\u4f1a\u88ab\u5ffd\u7565\u3002\u5728SVR4\u4e2d\uff0c\u5e76\u6ca1\u6709\u63d0\u53ca\u5f53\u8fdb\u7a0b\u6b63\u5728\u6267\u884c<span style=\"color: #993300;\">SIGCLD<\/span>\u7684\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u7684\u540c\u65f6\u4ea7\u751f<span style=\"color: #993300;\">SIGCLD<\/span>\u4fe1\u53f7\u4f1a\u53d1\u751f\u4ec0\u4e48\u3002<\/em><\/p>\n<p><em>SVR4\u7684<span style=\"color: #993300;\">sigaction<\/span>(2)\u51fd\u6570\u5728AT&amp;T\u4e2d\u7684\u624b\u518c\u91cc\u58f0\u660e\uff0c<span style=\"color: #993300;\">SA_SIGINFO<\/span>\u6807\u8bb0\u5f15\u53d1\u7684\u4fe1\u53f7\u662f\u53ef\u9760\u961f\u5217\u3002\u4e0d\u8fc7\u8fd9\u662f\u9519\u8bef\u7684\u3002\u663e\u7136\uff0c\u8fd9\u4e2a\u529f\u80fd\u53ea\u662f\u90e8\u5206\u5730\u88ab\u5b9e\u73b0\u5728\u5185\u6838\u4e2d\uff0c\u4f46\u5e76\u6ca1\u6709\u5728SVR4\u4e2d\u5f00\u542f\u3002\u5947\u602a\u7684\u662f\uff0cSVID\u5e76\u6ca1\u6709\u5ba3\u79f0\u76f8\u540c\u7684\u53ef\u9760\u961f\u5217\u3002<\/em><\/p>\n<p>\u5982\u679c\u6709\u4e0d\u6b62\u4e00\u4e2a\u4fe1\u53f7\u505a\u597d\u4e86\u4ea4\u4ed8\u5230\u8fdb\u7a0b\u7684\u51c6\u5907\uff0c\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1fPOSIX.1\u6ca1\u6709\u7279\u522b\u7684\u987a\u5e8f\u6765\u5b89\u6392\u4fe1\u53f7\u5982\u4f55\u4ea4\u4ed8\u5230\u8fdb\u7a0b\u3002POSIX.1\u53ea\u662f\u5efa\u8bae\uff0c\u548c\u5f53\u524d\u8fdb\u7a0b\u72b6\u6001\u6709\u5173\u8054\u7684\u4fe1\u53f7\u4f18\u5148\u4e8e\u5176\u5b83\u4fe1\u53f7\u3002\uff08<span style=\"color: #993300;\">SIGSEGV<\/span>\u5c31\u662f\u8fd9\u7c7b\u4fe1\u53f7\uff09<\/p>\n<p>\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709\u4e00\u4e2a<strong><em>\u4fe1\u53f7\u63a9\u7801<\/em><\/strong>\uff0c\u5b83\u5b9a\u4e49\u4e86\u4e00\u7ec4\u5f53\u524d\u4ea4\u4ed8\u5230\u76f8\u5173\u8fdb\u7a0b\u4e2d\u88ab\u963b\u585e\u7684\u4fe1\u53f7\u3002\u6211\u4eec\u53ef\u4ee5\u8ba4\u4e3a\u8fd9\u4e2a\u63a9\u7801\u5c31\u50cf\u662f\u4e3a\u6bcf\u4e2a\u53ef\u80fd\u7684\u4fe1\u53f7\u5b89\u6392\u4e86\u4e00\u4e2a\u6bd4\u7279\u4f4d\u3002\u5982\u679c\u8be5\u4f4d\u662fon\uff0c\u90a3\u628a\u8fd9\u4e2a\u4fe1\u53f7\u4f1a\u88ab\u963b\u585e\u3002\u8fdb\u7a0b\u53ef\u4ee5\u68c0\u67e5\u5e76\u6539\u53d8\u5f53\u524d\u4fe1\u53f7\u63a9\u7801\uff0c\u53ea\u8981\u4f7f\u7528<span style=\"color: #993300;\">sigprocmask<\/span>\u51fd\u6570\u5c31\u53ef\u4ee5\u3002<\/p>\n<p>\u56e0\u4e3a\u4fe1\u53f7\u7684\u6570\u91cf\u5927\u5927\u7684\u8d85\u51fa\u4e86\u6574\u578b\u53d8\u91cf\u7684\u4f4d\u6570\uff0c\u6240\u4ee5POSIX.1\u5b9a\u4e49\u4e86\u4e00\u4e2a\u6570\u636e\u7c7b\u578b\uff0c\u88ab\u53eb\u505a<span style=\"color: #993300;\">sigset_t<\/span>\uff0c\u5b83\u6301\u6709\u4e00\u4e2a<strong><em>\u4fe1\u53f7\u96c6<\/em><\/strong>\u3002\u4fe1\u53f7\u63a9\u7801\u88ab\u5b58\u50a8\u5728\u5176\u4e2d\u7684\u4e00\u4e2a\u4fe1\u53f7\u96c6\u4e2d\u3002\u5728APUE\u768410.11\u8282\uff0c\u4f1a\u63cf\u8ff05\u4e2a\u64cd\u4f5c\u4fe1\u53f7\u96c6\u7684\u51fd\u6570\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u4eec\u9700\u8981\u5b9a\u4e49\u4e00\u4e9b\u672f\u8bed\u7528\u4e8e\u6211\u4eec\u8ba8\u8bba\u4fe1\u53f7\u3002\u9996\u5148\uff0c\u5f53\u67d0\u4e2a\u5f15\u53d1\u4fe1\u53f7\u7684\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0c\u4fe1\u53f7\u662f\u4e3a\u4e00\u4e2a\u8fdb\u7a0b\u4ea7\u751f(generation)\u7684\uff08\u6216\u53d1\u9001\u5230\u4e00\u4e2a\u8fdb\u7a0b\uff09\u3002\u8fd9\u4e2a\u4e8b\u4ef6\u53ef\u80fd\u662f\u4e00\u4e2a\u786c&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.5x44.cn\/?p=628\"> 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":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-628","post","type-post","status-publish","format-standard","hentry","category-apue"],"_links":{"self":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/628","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=628"}],"version-history":[{"count":3,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/628\/revisions"}],"predecessor-version":[{"id":631,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/628\/revisions\/631"}],"wp:attachment":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=628"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}