{"id":122942,"date":"2026-11-06T02:41:49","date_gmt":"2026-11-05T18:41:49","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/122942.html"},"modified":"2026-11-06T02:41:49","modified_gmt":"2026-11-05T18:41:49","slug":"%e3%80%90linux-%e7%b3%bb%e7%bb%9f%e7%af%87%e4%b8%89%e5%8d%81%e5%85%ad%e3%80%91%e4%bf%a1%e5%8f%b7%e4%ba%8c%ef%bc%9a%e4%bf%a1%e5%8f%b7%e6%98%af%e5%a6%82%e4%bd%95%e4%ba%a7%e7%94%9f%e7%9a%84%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/122942.html","title":{"rendered":"\u3010Linux \u7cfb\u7edf\u7bc7(\u4e09\u5341\u516d)\u3011\u4fe1\u53f7(\u4e8c)\uff1a\u4fe1\u53f7\u662f\u5982\u4f55\u4ea7\u751f\u7684\uff1f\u2014\u2014\u4ece\u952e\u76d8\u8f93\u5165\u5230\u786c\u4ef6\u5f02\u5e38"},"content":{"rendered":"

\/* MD \/ \u5bcc\u6587\u672c\u4e2d\u7684 .toc\uff08\u542b\u535a\u5ba2\u56ed\u642c\u5bb6\u7b49\u5d4c\u5957\u7ed3\u6784\uff09\uff1b.toc-box \u5728\u4fa7\u680f\uff0c\u4e0d\u53d7\u5f71\u54cd *\/
\n #content_views .toc,
\n \/* \u7f16\u8f91\u5668\u5e38\u5728\u76ee\u5f55\u524d\u540e\u63d2\u5165\u7a7a p\uff08:empty \u4ecd\u5360 20px\uff09\uff0c\u4e00\u5e76\u53bb\u6389\u907f\u514d\u9876\u7a7a\u9699 *\/
\n #content_views.markdown_views > p:empty:has(+ .toc),
\n #content_views.markdown_views > .toc + p:empty,
\n \/* \u5bcc\u6587\u672c\u65e7\u7248\u76ee\u5f55\u6807\u8bb0 *\/
\n #content_views.htmledit_views #main-toc,
\n #content_views.htmledit_views #hr-toc,
\n #content_views.htmledit_views p[id*=\\”-toc\\”] {
\n display: none !important;
\n }
\n \/* \u76ee\u5f55\u53bb\u6389\u540e\uff0c\u7d27\u8ddf\u7684\u9996\u4e2a\u6807\u9898\u4e0d\u518d\u591a\u51fa\u4e00\u5757\u4e0a\u8fb9\u8ddd *\/
\n #content_views.markdown_views > .toc + h1,
\n #content_views.markdown_views > .toc + h2,
\n #content_views.markdown_views > .toc + h3,
\n #content_views.markdown_views > .toc + h4,
\n #content_views.markdown_views > .toc + p:empty + h1,
\n #content_views.markdown_views > .toc + p:empty + h2,
\n #content_views.markdown_views > .toc + p:empty + h3,
\n #content_views.markdown_views > .toc + p:empty + h4 {
\n margin-top: 0 !important;
\n }<\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\u5927\u5bb6\u597d，\u6b22\u8fce\u6765\u5230 huangjin007_ \u7684\u535a\u5ba2
\n \u2b50
\n \u4e2a\u4eba\u4e3b\u9875：huangjin007_
\n 🔥
\n \u6587\u7ae0\u6536\u5f55\u4e13\u680f：Linux \u5185\u529f\u4fee\u70bc\u624b\u518c(\u7cfb\u7edf\u7bc7) <\/p>\n

\u603b\u4f1a\u6709\u4e00\u4e9b\u575a\u6301\u80fd\u4ece\u51b0\u5c01\u7684\u571f\u5730\u91cc\u57f9\u80b2\u51fa\u5341\u4e07\u6735\u6012\u653e\u7684\u8537\u8587<\/b><\/font> <\/p>\n

\n

Linux \u7cfb\u7edf\u7bc7(\u4e09\u5341\u516d) \u2014\u2014 \u4fe1\u53f7\u662f\u5982\u4f55\u4ea7\u751f\u7684？<\/h2>\n<\/p>\n

\u6587\u7ae0\u76ee\u5f55<\/h4>\n
    \n
  • Linux \u7cfb\u7edf\u7bc7(\u4e09\u5341\u516d) \u2014\u2014 \u4fe1\u53f7\u662f\u5982\u4f55\u4ea7\u751f\u7684？<\/li>\n
  • \n
      \n
    • \u4e00\u3001\u524d\u8a00<\/li>\n
    • \u4e8c\u3001Linux \u4fe1\u53f7\u4ea7\u751f\u7684\u4e94\u79cd\u65b9\u5f0f<\/li>\n
    • \u4e09\u3001\u901a\u8fc7\u7ec8\u7aef\u6309\u952e\u4ea7\u751f\u4fe1\u53f7<\/li>\n
    • \n
        \n
      • 3.1 Ctrl+C：\u4e3a\u4ec0\u4e48\u80fd\u591f\u7ec8\u6b62\u8fdb\u7a0b？<\/li>\n
      • 3.2 Ctrl+\\\\：\u4e3a\u4ec0\u4e48\u80fd\u591f\u4ea7\u751f Core Dump？<\/li>\n
      • 3.3 Ctrl+Z：\u4e3a\u4ec0\u4e48\u7a0b\u5e8f\u6ca1\u6709\u7ed3\u675f？<\/li>\n
      • 3.4 \u7406\u89e3 OS \u5982\u4f55\u77e5\u9053\u952e\u76d8\u6709\u6570\u636e？<\/li>\n
      • 3.5 \u524d\u53f0\u8fdb\u7a0b\u4e0e\u540e\u53f0\u8fdb\u7a0b<\/li>\n
      • 3.6 \u5b64\u513f\u8fdb\u7a0b\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u76f4\u63a5\u901a\u8fc7 Ctrl+C \u7ec8\u6b62？<\/li>\n<\/ul>\n<\/li>\n
      • \u56db\u3001\u901a\u8fc7\u7cfb\u7edf\u547d\u4ee4\u4ea7\u751f\u4fe1\u53f7<\/li>\n
      • \n
          \n
        • 4.1 kill \u547d\u4ee4\u7684\u57fa\u672c\u4f7f\u7528<\/li>\n<\/ul>\n<\/li>\n
        • \u4e94\u3001\u901a\u8fc7\u7cfb\u7edf\u8c03\u7528\u4ea7\u751f\u4fe1\u53f7<\/li>\n
        • \n
            \n
          • 5.1 kill()：\u5411\u6307\u5b9a\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7<\/li>\n
          • \n
              \n
            • \u5b9e\u73b0\u81ea\u5df1\u7684 mykill \u547d\u4ee4<\/li>\n<\/ul>\n<\/li>\n
            • 5.2 raise()：\u7ed9\u81ea\u5df1\u53d1\u9001\u4fe1\u53f7<\/li>\n
            • 5.3 abort()：\u8ba9\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62<\/li>\n<\/ul>\n<\/li>\n
            • \u516d\u3001\u7531\u8f6f\u4ef6\u6761\u4ef6\u4ea7\u751f\u4fe1\u53f7<\/li>\n
            • \n
                \n
              • 6.1 SIGPIPE：\u7ba1\u9053\u8bfb\u7aef\u5173\u95ed\u540e\u7ee7\u7eed\u5199\u5165<\/li>\n
              • 6.2 alarm()：\u8bbe\u7f6e\u7cfb\u7edf\u95f9\u949f<\/li>\n
              • \n
                  \n
                • alarm() \u7684\u8fd4\u56de\u503c<\/li>\n<\/ul>\n<\/li>\n
                • 6.3 alarm() \u7684\u57fa\u672c\u9a8c\u8bc1：\u4f53\u4f1a IO \u6548\u7387\u95ee\u9898<\/li>\n
                • 6.4 \u5982\u4f55\u8bbe\u7f6e\u91cd\u590d\u95f9\u949f？<\/li>\n<\/ul>\n<\/li>\n
                • \u4e03\u3001\u5982\u4f55\u7406\u89e3\u8f6f\u4ef6\u6761\u4ef6？<\/li>\n
                • \u516b\u3001\u7cfb\u7edf\u95f9\u949f\u7684\u5e95\u5c42\u539f\u7406<\/li>\n
                • \n
                    \n
                  • 8.1 \u64cd\u4f5c\u7cfb\u7edf\u4e3a\u4ec0\u4e48\u9700\u8981\u7ba1\u7406\u5b9a\u65f6\u5668？<\/li>\n
                  • 8.2 \u5b9a\u65f6\u5668\u7684\u6570\u636e\u7ed3\u6784<\/li>\n
                  • 8.3 \u591a\u4e2a\u5b9a\u65f6\u5668\u5982\u4f55\u7ec4\u7ec7？<\/li>\n<\/ul>\n<\/li>\n
                  • \u4e5d\u3001\u786c\u4ef6\u5f02\u5e38\u4ea7\u751f\u4fe1\u53f7<\/li>\n
                  • \n
                      \n
                    • 9.1 \u9664\u96f6\u9519\u8bef：SIGFPE<\/li>\n
                    • 9.2 \u91ce\u6307\u9488：SIGSEGV<\/li>\n
                    • 9.3 \u4e3a\u4ec0\u4e48\u64cd\u4f5c\u7cfb\u7edf\u80fd\u591f\u53d1\u73b0\u8fd9\u4e9b\u9519\u8bef？<\/li>\n
                    • 9.4 \u4e3a\u4ec0\u4e48\u6355\u6349 SIGSEGV \u540e，\u7a0b\u5e8f\u53ef\u80fd\u4e00\u76f4\u6253\u5370？<\/li>\n<\/ul>\n<\/li>\n
                    • \u5341\u3001Core Dump：\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62\u540e\u7684\u73b0\u573a\u4fdd\u5b58<\/li>\n
                    • \n
                        \n
                      • 10.1 \u4ec0\u4e48\u662f Core Dump？<\/li>\n
                      • 10.2 \u4e3a\u4ec0\u4e48\u6709\u65f6\u5019\u6ca1\u6709 Core \u6587\u4ef6？<\/li>\n
                      • 10.3 \u5982\u4f55\u67e5\u770b\u5b50\u8fdb\u7a0b\u662f\u5426\u4ea7\u751f Core Dump？<\/li>\n<\/ul>\n<\/li>\n
                      • \u5341\u4e00\u3001\u603b\u7ed3<\/li>\n
                      • \u7ed3\u8bed：<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
                        \n

                        \u4e00\u3001\u524d\u8a00<\/h3>\n

                        \u2003\u2003\u5728\u4e0a\u4e00\u7bc7\u535a\u5ba2\u4e2d，\u6211\u4eec\u521d\u6b65\u8ba4\u8bc6\u4e86 Linux \u4fe1\u53f7，\u4e86\u89e3\u4e86\u4fe1\u53f7\u7684\u57fa\u672c\u6982\u5ff5\u3001\u751f\u547d\u5468\u671f，\u4ee5\u53ca\u4fe1\u53f7\u7684\u4e09\u79cd\u5904\u7406\u65b9\u5f0f：<\/p>\n

                          \n
                        • \u9ed8\u8ba4\u5904\u7406（SIG_DFL）<\/li>\n
                        • \u5ffd\u7565\u5904\u7406（SIG_IGN）<\/li>\n
                        • \u81ea\u5b9a\u4e49\u6355\u6349（Catch）<\/li>\n<\/ul>\n

                          \u2003\u2003\u6211\u4eec\u77e5\u9053，\u4fe1\u53f7\u7684\u751f\u547d\u5468\u671f\u53ef\u4ee5\u7b80\u5355\u6982\u62ec\u4e3a：<\/p>\n

                          \u2003\u2003\u4fe1\u53f7\u4ea7\u751f \u2192 \u4fe1\u53f7\u4fdd\u5b58 \u2192 \u4fe1\u53f7\u5904\u7406<\/p>\n

                          \u2003\u2003\u5176\u4e2d，\u4fe1\u53f7\u4ea7\u751f\u662f\u6574\u4e2a\u751f\u547d\u5468\u671f\u7684\u8d77\u70b9\u3002<\/p>\n

                          \u2003\u2003\u90a3\u4e48，\u4e00\u4e2a\u95ee\u9898\u5c31\u6765\u4e86：<\/p>\n

                          \u2003\u2003\u4fe1\u53f7\u7a76\u7adf\u662f\u600e\u4e48\u4ea7\u751f\u7684？\u662f\u8c01\u4ea7\u751f\u7684？<\/p>\n

                          \u2003\u2003\u4f8b\u5982：<\/p>\n

                            \n
                          • \u6309\u4e0b Ctrl+C，\u4e3a\u4ec0\u4e48\u7a0b\u5e8f\u4f1a\u7ec8\u6b62？<\/li>\n
                          • \u6267\u884c kill -9 pid，\u4e3a\u4ec0\u4e48\u80fd\u591f\u6740\u6b7b\u6307\u5b9a\u8fdb\u7a0b？<\/li>\n
                          • \u7a0b\u5e8f\u53d1\u751f\u9664\u96f6\u9519\u8bef，\u64cd\u4f5c\u7cfb\u7edf\u4e3a\u4ec0\u4e48\u4f1a\u77e5\u9053？<\/li>\n
                          • \u8c03\u7528 alarm()，\u4e3a\u4ec0\u4e48\u8fc7\u4e00\u6bb5\u65f6\u95f4\u8fdb\u7a0b\u5c31\u4f1a\u6536\u5230\u4fe1\u53f7？<\/li>\n<\/ul>\n

                            \u2003\u2003\u8fd9\u4e9b\u770b\u4f3c\u6beb\u4e0d\u76f8\u5173\u7684\u73b0\u8c61，\u5176\u5b9e\u90fd\u4e0e Linux \u4fe1\u53f7\u7684\u4ea7\u751f\u673a\u5236\u6709\u5173\u3002<\/p>\n

                            \u2003\u2003\u672c\u7bc7\u5c31\u4ece\u8fd9\u4e9b\u5b9e\u9645\u95ee\u9898\u51fa\u53d1，\u4e00\u6b65\u6b65\u7406\u89e3 Linux \u4fe1\u53f7\u7684\u4e94\u79cd\u4ea7\u751f\u65b9\u5f0f\u3002<\/p>\n

                            \n

                            \u4e8c\u3001Linux \u4fe1\u53f7\u4ea7\u751f\u7684\u4e94\u79cd\u65b9\u5f0f<\/h3>\n

                            \u2003\u2003\u4ece\u4ea7\u751f\u6765\u6e90\u6765\u770b，Linux \u4fe1\u53f7\u4e3b\u8981\u6709\u4ee5\u4e0b\u4e94\u79cd\u4ea7\u751f\u65b9\u5f0f：<\/p>\n\n\u4ea7\u751f\u65b9\u5f0f\u5178\u578b\u64cd\u4f5c\u5bf9\u5e94\u4fe1\u53f7<\/tr>\n\n\n\n\n\n\n
                            \u952e\u76d8\u4ea7\u751f<\/td>\nCtrl+C\u3001Ctrl+\\\\\u3001Ctrl+Z<\/td>\nSIGINT\u3001SIGQUIT\u3001SIGTSTP<\/td>\n<\/tr>\n
                            \u7cfb\u7edf\u8c03\u7528\u4ea7\u751f<\/td>\nkill()\u3001raise()\u3001abort()<\/td>\n\u6839\u636e\u8c03\u7528\u53c2\u6570\u51b3\u5b9a<\/td>\n<\/tr>\n
                            \u7cfb\u7edf\u547d\u4ee4\u4ea7\u751f<\/td>\nkill -9 pid<\/td>\nSIGKILL<\/td>\n<\/tr>\n
                            \u786c\u4ef6\u5f02\u5e38\u4ea7\u751f<\/td>\n\u9664\u96f6\u3001\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee<\/td>\nSIGFPE\u3001SIGSEGV<\/td>\n<\/tr>\n
                            \u8f6f\u4ef6\u6761\u4ef6\u4ea7\u751f<\/td>\nalarm() \u8d85\u65f6\u3001\u7ba1\u9053\u8bfb\u7aef\u5173\u95ed<\/td>\nSIGALRM\u3001SIGPIPE<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                            \u2003\u2003\u867d\u7136\u8fd9\u4e9b\u4fe1\u53f7\u7684\u4ea7\u751f\u65b9\u5f0f\u4e0d\u540c，\u4f46\u5b83\u4eec\u6700\u7ec8\u90fd\u9700\u8981\u64cd\u4f5c\u7cfb\u7edf\u53c2\u4e0e\u3002<\/p>\n

                            \u2003\u2003\u4fe1\u53f7\u4e0d\u662f\u786c\u4ef6\u6216\u8005\u7528\u6237\u76f4\u63a5\u4fee\u6539\u8fdb\u7a0b\u7684\u6570\u636e\u7ed3\u6784，\u800c\u662f\u7531\u64cd\u4f5c\u7cfb\u7edf\u8d1f\u8d23\u4ea7\u751f\u3001\u8bb0\u5f55\u548c\u9012\u8fbe\u7684\u3002<\/p>\n

                            \n

                            \u4e09\u3001\u901a\u8fc7\u7ec8\u7aef\u6309\u952e\u4ea7\u751f\u4fe1\u53f7<\/h3>\n

                            3.1 Ctrl+C：\u4e3a\u4ec0\u4e48\u80fd\u591f\u7ec8\u6b62\u8fdb\u7a0b？<\/h4>\n

                            \u2003\u2003\u5728 Linux \u4e2d，\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528 Ctrl+C \u7ec8\u6b62\u6b63\u5728\u8fd0\u884c\u7684\u7a0b\u5e8f\u3002<\/p>\n

                            \u4f8b\u5982：<\/p>\n

                            while<\/span> :<\/span>;<\/span> do<\/span>
                            \n echo<\/span> "I am running…"<\/span>
                            \n sleep<\/span> 1<\/span>
                            \ndone<\/span><\/p>\n

                            \u2003\u2003\u8fd0\u884c\u4e4b\u540e，\u7a0b\u5e8f\u4f1a\u4e0d\u65ad\u8f93\u51fa\u5185\u5bb9\u3002<\/p>\n

                            \u2003\u2003\u6b64\u65f6\u6309\u4e0b：<\/p>\n

                            Ctrl + C<\/p>\n

                            \u2003\u2003\u7a0b\u5e8f\u5c31\u4f1a\u7ec8\u6b62\u3002<\/p>\n

                            \u2003\u2003\u90a3\u4e48\u95ee\u9898\u6765\u4e86：<\/p>\n

                            \u2003\u2003\u6211\u4eec\u660e\u660e\u53ea\u662f\u6309\u4e0b\u4e86\u4e00\u4e2a\u952e，\u4e3a\u4ec0\u4e48\u8fdb\u7a0b\u5c31\u7ec8\u6b62\u4e86？<\/p>\n

                            \u2003\u2003\u5b9e\u9645\u4e0a，Ctrl+C \u5e76\u4e0d\u662f\u76f4\u63a5\u6740\u6b7b\u8fdb\u7a0b，\u800c\u662f\u901a\u8fc7\u7ec8\u7aef\u4ea7\u751f\u4e00\u4e2a\u4fe1\u53f7：<\/p>\n

                            \u2003\u2003SIGINT（\u4fe1\u53f7\u7f16\u53f7\u4e3a 2）<\/p>\n

                            \u2003\u2003\u5176\u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c\u662f Term，\u4e5f\u5c31\u662f\u7ec8\u6b62\u8fdb\u7a0b\u3002<\/p>\n

                            \u2003\u2003\u6211\u4eec\u53ef\u4ee5\u7f16\u5199\u4e00\u4e2a\u7b80\u5355\u7684\u7a0b\u5e8f\u9a8c\u8bc1：<\/p>\n

                            #<\/span>include<\/span> <iostream><\/span><\/span>
                            \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                            \n#<\/span>include<\/span> <signal.h><\/span><\/span><\/p>\n

                            void<\/span> handler<\/span>(<\/span>int<\/span> signumber)<\/span>
                            \n{<\/span>
                            \n std::<\/span>cout <<<\/span> "\u6211\u662f\u8fdb\u7a0b: "<\/span> <<<\/span> getpid<\/span>(<\/span>)<\/span>
                            \n <<<\/span> ", \u6211\u83b7\u5f97\u4e86\u4e00\u4e2a\u4fe1\u53f7: "<\/span>
                            \n <<<\/span> signumber <<<\/span> std::<\/span>endl;<\/span>
                            \n}<\/span><\/p>\n

                            int<\/span> main<\/span>(<\/span>)<\/span>
                            \n{<\/span>
                            \n std::<\/span>cout <<<\/span> "\u6211\u662f\u8fdb\u7a0b: "<\/span> <<<\/span> getpid<\/span>(<\/span>)<\/span> <<<\/span> std::<\/span>endl;<\/span><\/p>\n

                            \/\/ \u6355\u6349 SIGINT \u4fe1\u53f7<\/span>
                            \n signal<\/span>(<\/span>SIGINT,<\/span> handler)<\/span>;<\/span><\/p>\n

                            while<\/span> (<\/span>true<\/span>)<\/span>
                            \n {<\/span>
                            \n std::<\/span>cout <<<\/span> "I am a process, I am waiting signal!"<\/span>
                            \n <<<\/span> std::<\/span>endl;<\/span>
                            \n sleep<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                            \n }<\/span><\/p>\n

                            return<\/span> 0<\/span>;<\/span>
                            \n}<\/span><\/p>\n

                            \u2003\u2003\u7f16\u8bd1\u8fd0\u884c：<\/p>\n

                            g++ sig.cc -o<\/span> sig
                            \n.\/sig<\/p>\n

                            \u2003\u2003\u8fd0\u884c\u7ed3\u679c： \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                            \u2003\u2003\u53ef\u4ee5\u770b\u5230，\u6309\u4e0b Ctrl+C \u540e，\u7a0b\u5e8f\u5e76\u6ca1\u6709\u7ec8\u6b62，\u800c\u662f\u6267\u884c\u4e86\u6211\u4eec\u81ea\u5b9a\u4e49\u7684\u5904\u7406\u51fd\u6570\u3002<\/p>\n

                            \u2003\u2003\u8fd9\u662f\u56e0\u4e3a\u6211\u4eec\u901a\u8fc7 signal() \u4fee\u6539\u4e86 SIGINT \u7684\u5904\u7406\u52a8\u4f5c\u3002<\/p>\n

                            \u2003\u2003\u5982\u679c\u6ce8\u91ca\u6389：<\/p>\n

                            signal<\/span>(<\/span>SIGINT,<\/span> handler)<\/span>;<\/span><\/p>\n

                            \u2003\u2003\u518d\u6b21\u8fd0\u884c\u7a0b\u5e8f，\u6309\u4e0b Ctrl+C，\u8fdb\u7a0b\u5c31\u4f1a\u6309\u7167\u9ed8\u8ba4\u52a8\u4f5c\u7ec8\u6b62\u3002<\/p>\n

                            \u8fd9\u91cc\u9700\u8981\u8bb0\u4f4f：<\/p>\n

                            \u2003\u2003Ctrl+C \u4ea7\u751f\u7684\u662f SIGINT \u4fe1\u53f7，\u800c\u8fdb\u7a0b\u662f\u5426\u7ec8\u6b62，\u53d6\u51b3\u4e8e\u5b83\u5bf9\u8fd9\u4e2a\u4fe1\u53f7\u8bbe\u7f6e\u7684\u5904\u7406\u52a8\u4f5c\u3002<\/p>\n

                            3.2 Ctrl+\\\\：\u4e3a\u4ec0\u4e48\u80fd\u591f\u4ea7\u751f Core Dump？<\/h4>\n

                            \u2003\u2003\u9664\u4e86 Ctrl+C，\u8fd8\u6709\u4e00\u4e2a\u6bd4\u8f83\u7279\u6b8a\u7684\u7ec4\u5408\u952e：<\/p>\n

                            Ctrl + \\\\<\/p>\n

                            \u2003\u2003\u5b83\u4f1a\u4ea7\u751f：<\/p>\n

                            \u2003\u2003SIGQUIT（\u4fe1\u53f7\u7f16\u53f7\u4e3a 3）<\/p>\n

                            \u2003\u2003SIGQUIT \u9ed8\u8ba4\u7684\u5904\u7406\u52a8\u4f5c\u662f：<\/p>\n

                            \u2003\u2003\u7ec8\u6b62\u8fdb\u7a0b，\u5e76\u4ea7\u751f Core Dump\u3002<\/p>\n

                            \u2003\u2003\u6211\u4eec\u53ea\u9700\u8981\u628a\u4e0a\u9762\u7a0b\u5e8f\u4e2d\u7684\u4fe1\u53f7\u4fee\u6539\u4e00\u4e0b：<\/p>\n

                            signal<\/span>(<\/span>SIGQUIT,<\/span> handler)<\/span>;<\/span><\/p>\n

                            \u2003\u2003\u8fd0\u884c\u7a0b\u5e8f\u540e\u6309\u4e0b Ctrl+\\\\：<\/p>\n

                            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                            \u2003\u2003\u7a0b\u5e8f\u6ca1\u6709\u7ec8\u6b62，\u662f\u56e0\u4e3a\u6211\u4eec\u6355\u6349\u4e86 SIGQUIT\u3002<\/p>\n

                            \u2003\u2003\u5982\u679c\u6ce8\u91ca\u6389\u6355\u6349\u4ee3\u7801：<\/p>\n

                            \/\/ signal(SIGQUIT, handler);<\/span><\/p>\n

                            \u2003\u2003\u518d\u6b21\u8fd0\u884c\u5e76\u6309\u4e0b Ctrl+\\\\：<\/p>\n

                            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                            \u2003\u2003\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 Core Dump？<\/p>\n

                            \u2003\u2003\u7b80\u5355\u6765\u8bf4，\u5f53\u8fdb\u7a0b\u56e0\u4e3a\u67d0\u4e9b\u4fe1\u53f7\u5f02\u5e38\u7ec8\u6b62，\u5e76\u4e14\u8be5\u4fe1\u53f7\u7684\u9ed8\u8ba4\u52a8\u4f5c\u652f\u6301 Core Dump \u65f6，\u64cd\u4f5c\u7cfb\u7edf\u53ef\u4ee5\u5c06\u8fdb\u7a0b\u7684\u90e8\u5206\u5185\u5b58\u72b6\u6001\u4fdd\u5b58\u5230\u78c1\u76d8，\u4f9b\u540e\u7eed\u8c03\u8bd5\u4f7f\u7528\u3002<\/p>\n

                            \u2003\u2003\u5173\u4e8e Core Dump，\u540e\u9762\u4f1a\u4e13\u95e8\u4ecb\u7ecd\u3002<\/p>\n

                            3.3 Ctrl+Z：\u4e3a\u4ec0\u4e48\u7a0b\u5e8f\u6ca1\u6709\u7ed3\u675f？<\/h4>\n

                            \u2003\u2003\u8fd8\u6709\u4e00\u4e2a\u5e38\u89c1\u7684\u7ec4\u5408\u952e：<\/p>\n

                            Ctrl + Z<\/p>\n

                            \u2003\u2003\u5b83\u4ea7\u751f\u7684\u662f：<\/p>\n

                            SIGTSTP（\u4fe1\u53f7\u7f16\u53f7\u4e3a 20）<\/p>\n

                            \u2003\u2003\u4e0e\u524d\u9762\u4e24\u4e2a\u4fe1\u53f7\u4e0d\u540c，SIGTSTP \u7684\u9ed8\u8ba4\u52a8\u4f5c\u4e0d\u662f\u7ec8\u6b62\u8fdb\u7a0b，\u800c\u662f\u505c\u6b62\u8fdb\u7a0b\u3002<\/p>\n

                            \u2003\u2003\u6211\u4eec\u4fee\u6539\u4e00\u4e0b\u7a0b\u5e8f：<\/p>\n

                            signal<\/span>(<\/span>SIGTSTP,<\/span> handler)<\/span>;<\/span><\/p>\n

                            \u2003\u2003\u8fd0\u884c\u7a0b\u5e8f\u5e76\u6309\u4e0b Ctrl+Z：<\/p>\n

                            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                            \u2003\u2003\u7531\u4e8e\u6211\u4eec\u6355\u6349\u4e86 SIGTSTP，\u6240\u4ee5\u7a0b\u5e8f\u5e76\u6ca1\u6709\u505c\u6b62\u3002<\/p>\n

                            \u2003\u2003\u6ce8\u91ca\u6389\u6355\u6349\u4ee3\u7801，\u518d\u6b21\u8fd0\u884c：<\/p>\n

                            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                            \u2003\u2003\u6b64\u65f6\u8fdb\u7a0b\u5df2\u7ecf\u88ab\u6682\u505c\u4e86，\u4f46\u5e76\u6ca1\u6709\u9000\u51fa\u3002<\/p>\n

                            \u2003\u2003\u53ef\u4ee5\u4f7f\u7528：<\/p>\n

                            jobs<\/span><\/p>\n

                            \u2003\u2003\u67e5\u770b\u5f53\u524d Shell \u7ba1\u7406\u7684\u4f5c\u4e1a：<\/p>\n

                            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                            \u2003\u2003\u5982\u679c\u60f3\u8ba9\u5b83\u7ee7\u7eed\u8fd0\u884c，\u53ef\u4ee5\u4f7f\u7528：<\/p>\n

                            bg<\/span> %1<\/p>\n

                            \u2003\u2003\u8ba9\u5b83\u5728\u540e\u53f0\u7ee7\u7eed\u8fd0\u884c\u3002<\/p>\n

                            \u2003\u2003\u6216\u8005：<\/p>\n

                            fg<\/span> %1<\/p>\n

                            \u2003\u2003\u5c06\u5b83\u91cd\u65b0\u653e\u5230\u524d\u53f0\u8fd0\u884c\u3002<\/p>\n

                            \u2003\u2003\u8fd9\u91cc\u9700\u8981\u6ce8\u610f：<\/p>\n

                            \u2003\u2003Ctrl+Z \u53ea\u662f\u8ba9\u8fdb\u7a0b\u505c\u6b62，\u5e76\u4e0d\u662f\u7ed3\u675f\u8fdb\u7a0b\u3002<\/p>\n

                            3.4 \u7406\u89e3 OS \u5982\u4f55\u77e5\u9053\u952e\u76d8\u6709\u6570\u636e？<\/h4>\n

                            \u2003\u2003\u524d\u9762\u6211\u4eec\u77e5\u9053：<\/p>\n

                              \n
                            • Ctrl+C \u4ea7\u751f SIGINT\u3002<\/li>\n
                            • Ctrl+\\\\ \u4ea7\u751f SIGQUIT\u3002<\/li>\n
                            • Ctrl+Z \u4ea7\u751f SIGTSTP\u3002<\/li>\n<\/ul>\n

                              \u2003\u2003\u90a3\u4e48\u95ee\u9898\u6765\u4e86：<\/p>\n

                              \u2003\u2003\u64cd\u4f5c\u7cfb\u7edf\u662f\u600e\u4e48\u77e5\u9053\u6211\u4eec\u6309\u4e0b\u4e86\u8fd9\u4e9b\u7ec4\u5408\u952e\u7684？<\/p>\n

                              \u2003\u2003\u8fd9\u5c31\u6d89\u53ca\u952e\u76d8\u8f93\u5165\u7684\u5904\u7406\u8fc7\u7a0b\u3002<\/p>\n

                              \u2003\u2003\u53ef\u4ee5\u7b80\u5355\u7406\u89e3\u4e3a(\u5177\u4f53\u7684\u8fc7\u7a0b\u6211\u4eec\u4e4b\u540e\u4f1a\u8bb2)：<\/p>\n

                            • \u7528\u6237\u6309\u4e0b\u952e\u76d8\u6309\u952e\u3002<\/li>\n
                            • \u952e\u76d8\u63a7\u5236\u5668\u4ea7\u751f\u786c\u4ef6\u4e2d\u65ad，\u901a\u77e5 CPU \u6709\u952e\u76d8\u8f93\u5165\u3002<\/li>\n
                            • \u64cd\u4f5c\u7cfb\u7edf\u7684\u4e2d\u65ad\u5904\u7406\u673a\u5236\u83b7\u53d6\u952e\u76d8\u8f93\u5165\u3002<\/li>\n
                            • \u7ec8\u7aef\u9a71\u52a8\u7a0b\u5e8f\u8bc6\u522b\u5bf9\u5e94\u7684\u7279\u6b8a\u63a7\u5236\u5b57\u7b26\u3002<\/li>\n
                            • \u5982\u679c\u8bc6\u522b\u5230 Ctrl+C\u3001Ctrl+\\\\ \u6216 Ctrl+Z，\u5c31\u5411\u7ec8\u7aef\u7684\u524d\u53f0\u8fdb\u7a0b\u7ec4\u53d1\u9001\u5bf9\u5e94\u4fe1\u53f7\u3002<\/li>\n

                              \u4f8b\u5982：<\/p>\n

                              \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                              \u2003\u2003\u8fd9\u91cc\u9700\u8981\u7279\u522b\u6ce8\u610f：<\/p>\n

                              \u2003\u2003\u952e\u76d8\u4ea7\u751f\u7684\u4fe1\u53f7，\u901a\u5e38\u53d1\u9001\u7ed9\u5f53\u524d\u7ec8\u7aef\u7684\u524d\u53f0\u8fdb\u7a0b\u7ec4，\u800c\u4e0d\u662f\u4efb\u610f\u4e00\u4e2a\u8fdb\u7a0b\u3002<\/p>\n

                              3.5 \u524d\u53f0\u8fdb\u7a0b\u4e0e\u540e\u53f0\u8fdb\u7a0b<\/h4>\n

                              \u2003\u2003\u6211\u4eec\u5e73\u65f6\u6267\u884c\u7a0b\u5e8f，\u901a\u5e38\u6709\u4e24\u79cd\u65b9\u5f0f：<\/p>\n

                              .\/test<\/p>\n

                              \u4ee5\u53ca：<\/p>\n

                              .\/test &<\/span><\/p>\n

                              \u5b83\u4eec\u6709\u4ec0\u4e48\u533a\u522b？<\/p>\n\n\u542f\u52a8\u65b9\u5f0f\u8fdb\u7a0b\u72b6\u6001<\/tr>\n\n\n\n
                              .\/test<\/td>\n\u524d\u53f0\u8fd0\u884c<\/td>\n<\/tr>\n
                              .\/test &<\/td>\n\u540e\u53f0\u8fd0\u884c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                              \u2003\u2003\u524d\u53f0\u8fdb\u7a0b\u548c\u540e\u53f0\u8fdb\u7a0b\u6700\u5927\u7684\u533a\u522b\u4e4b\u4e00，\u5c31\u662f\u5b83\u4eec\u5bf9\u7ec8\u7aef\u8f93\u5165\u7684\u4f7f\u7528\u65b9\u5f0f\u4e0d\u540c\u3002<\/p>\n

                              \u524d\u53f0\u8fdb\u7a0b：<\/p>\n

                                \n
                              • \u53ef\u4ee5\u4ece\u7ec8\u7aef\u8bfb\u53d6\u6807\u51c6\u8f93\u5165\u3002<\/li>\n
                              • \u53ef\u4ee5\u5411\u7ec8\u7aef\u8f93\u51fa\u5185\u5bb9\u3002<\/li>\n
                              • \u63a5\u6536\u7ec8\u7aef\u53d1\u9001\u7684\u952e\u76d8\u4fe1\u53f7\u3002<\/li>\n<\/ul>\n

                                \u540e\u53f0\u8fdb\u7a0b：<\/p>\n

                                  \n
                                • \u53ef\u4ee5\u5411\u7ec8\u7aef\u8f93\u51fa\u5185\u5bb9\u3002<\/li>\n
                                • \u9ed8\u8ba4\u4e0d\u80fd\u76f4\u63a5\u8bfb\u53d6\u7ec8\u7aef\u6807\u51c6\u8f93\u5165\u3002<\/li>\n
                                • \u4e0d\u4f1a\u56e0\u4e3a\u7ec8\u7aef\u4e0a\u7684 Ctrl+C \u800c\u76f4\u63a5\u6536\u5230\u5bf9\u5e94\u4fe1\u53f7\u3002<\/li>\n<\/ul>\n

                                  \u2003\u2003\u4e3a\u4ec0\u4e48\u540e\u53f0\u8fdb\u7a0b\u4e0d\u80fd\u76f4\u63a5\u8bfb\u53d6\u7ec8\u7aef\u8f93\u5165？<\/p>\n

                                  \u2003\u2003\u56e0\u4e3a\u4e00\u4e2a\u7ec8\u7aef\u5728\u540c\u4e00\u65f6\u523b\u53ea\u80fd\u6709\u4e00\u4e2a\u524d\u53f0\u8fdb\u7a0b\u7ec4\u3002<\/p>\n

                                  \u2003\u2003\u5982\u679c\u540e\u53f0\u8fdb\u7a0b\u5c1d\u8bd5\u8bfb\u53d6\u63a7\u5236\u7ec8\u7aef，\u901a\u5e38\u4f1a\u6536\u5230 SIGTTIN \u4fe1\u53f7，\u5e76\u6309\u7167\u9ed8\u8ba4\u52a8\u4f5c\u505c\u6b62\u3002<\/p>\n

                                  \u2003\u2003\u6240\u4ee5，\u524d\u53f0\u4e0e\u540e\u53f0\u7684\u533a\u522b\u5e76\u4e0d\u662f\u80fd\u4e0d\u80fd\u8f93\u51fa，\u800c\u4e3b\u8981\u6d89\u53ca\u7ec8\u7aef\u8f93\u5165\u7684\u63a7\u5236\u6743\u3002<\/p>\n

                                  3.6 \u5b64\u513f\u8fdb\u7a0b\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u76f4\u63a5\u901a\u8fc7 Ctrl+C \u7ec8\u6b62？<\/h4>\n

                                  \u2003\u2003\u5047\u8bbe\u5b58\u5728\u7236\u5b50\u8fdb\u7a0b\u5173\u7cfb：<\/p>\n

                                  \u7236\u8fdb\u7a0b
                                  \n |
                                  \n fork()
                                  \n |
                                  \n +—- \u5b50\u8fdb\u7a0b<\/p>\n

                                  \u2003\u2003\u5982\u679c\u7236\u8fdb\u7a0b\u5148\u9000\u51fa，\u5b50\u8fdb\u7a0b\u5c31\u4f1a\u6210\u4e3a\u5b64\u513f\u8fdb\u7a0b\u3002<\/p>\n

                                  \u2003\u2003\u5b64\u513f\u8fdb\u7a0b\u4f1a\u88ab\u7cfb\u7edf\u4e2d\u7684\u5176\u4ed6\u8fdb\u7a0b（\u901a\u5e38\u662f PID 1 \u5bf9\u5e94\u7684 init \u6216 systemd）\u6536\u517b\u3002<\/p>\n

                                  \u2003\u2003\u4f46\u662f\u8fd9\u91cc\u6709\u4e00\u4e2a\u5bb9\u6613\u6df7\u6dc6\u7684\u5730\u65b9：<\/p>\n

                                  \u2003\u2003\u5b64\u513f\u8fdb\u7a0b\u5e76\u4e0d\u7b49\u4e8e\u540e\u53f0\u8fdb\u7a0b\u3002<\/p>\n

                                  \u2003\u2003\u7236\u8fdb\u7a0b\u9000\u51fa\u540e，\u5b50\u8fdb\u7a0b\u662f\u5426\u8fd8\u80fd\u63a5\u6536 Ctrl+C，\u53d6\u51b3\u4e8e\u5b83\u662f\u5426\u4ecd\u7136\u5c5e\u4e8e\u7ec8\u7aef\u7684\u524d\u53f0\u8fdb\u7a0b\u7ec4\u3002<\/p>\n

                                  \u2003\u2003\u5982\u679c\u5b83\u5df2\u7ecf\u4e0d\u5c5e\u4e8e\u5f53\u524d\u7ec8\u7aef\u7684\u524d\u53f0\u8fdb\u7a0b\u7ec4，\u90a3\u4e48\u7ec8\u7aef\u6309\u952e\u4ea7\u751f\u7684 SIGINT \u5c31\u4e0d\u4f1a\u53d1\u9001\u7ed9\u5b83\u3002<\/p>\n

                                  \u2003\u2003\u56e0\u6b64，\u4e0d\u80fd\u7b80\u5355\u5730\u8ba4\u4e3a\u6240\u6709\u5b64\u513f\u8fdb\u7a0b\u90fd\u65e0\u6cd5\u901a\u8fc7 Ctrl+C \u7ec8\u6b62\u3002<\/p>\n

                                  \n

                                  \u56db\u3001\u901a\u8fc7\u7cfb\u7edf\u547d\u4ee4\u4ea7\u751f\u4fe1\u53f7<\/h3>\n

                                  \u2003\u2003\u524d\u9762\u6211\u4eec\u901a\u8fc7\u952e\u76d8\u4ea7\u751f\u4e86\u4fe1\u53f7\u3002<\/p>\n

                                  \u2003\u2003\u90a3\u4e48，\u5982\u679c\u4e0d\u60f3\u901a\u8fc7\u952e\u76d8\u64cd\u4f5c，\u80fd\u4e0d\u80fd\u4e3b\u52a8\u7ed9\u6307\u5b9a\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7？<\/p>\n

                                  \u2003\u2003\u5f53\u7136\u53ef\u4ee5\u3002<\/p>\n

                                  \u2003\u2003Linux \u63d0\u4f9b\u4e86 kill \u547d\u4ee4\u3002<\/p>\n

                                  4.1 kill \u547d\u4ee4\u7684\u57fa\u672c\u4f7f\u7528<\/h4>\n

                                  \u2003\u2003\u9996\u5148\u7f16\u5199\u4e00\u4e2a\u7b80\u5355\u7684\u6b7b\u5faa\u73af\u7a0b\u5e8f：<\/p>\n

                                  #<\/span>include<\/span> <iostream><\/span><\/span>
                                  \n#<\/span>include<\/span> <unistd.h><\/span><\/span><\/p>\n

                                  int<\/span> main<\/span>(<\/span>)<\/span>
                                  \n{<\/span>
                                  \n while<\/span> (<\/span>true<\/span>)<\/span>
                                  \n {<\/span>
                                  \n sleep<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                                  \n }<\/span><\/p>\n

                                  return<\/span> 0<\/span>;<\/span>
                                  \n}<\/span><\/p>\n

                                  \u2003\u2003\u7f16\u8bd1\u8fd0\u884c：<\/p>\n

                                  g++ sig.cc -o<\/span> sig<\/p>\n

                                  \u2003\u2003\u8ba9\u7a0b\u5e8f\u5728\u540e\u53f0\u8fd0\u884c：<\/p>\n

                                  .\/sig &<\/span><\/p>\n

                                  \u2003\u2003\u901a\u8fc7\u4e0b\u9762\u7684\u547d\u4ee4\u67e5\u770b\u8fdb\u7a0b PID：<\/p>\n

                                  ps<\/span> ajx |<\/span> grep<\/span> sig<\/p>\n

                                  \u2003\u2003\u5047\u8bbe\u5f97\u5230：<\/p>\n

                                  PPID PID PGID SID TTY
                                  \n211805 213784 213784 211805 pts\/0<\/p>\n

                                  \u2003\u2003\u5176\u4e2d PID \u4e3a：<\/p>\n

                                  213784<\/p>\n

                                  \u2003\u2003\u73b0\u5728，\u6211\u4eec\u5411\u8fd9\u4e2a\u8fdb\u7a0b\u53d1\u9001 SIGSEGV \u4fe1\u53f7：<\/p>\n

                                  kill<\/span> -SIGSEGV<\/span> 213784<\/span><\/p>\n

                                  \u2003\u2003\u4e5f\u53ef\u4ee5\u4f7f\u7528\u4fe1\u53f7\u7f16\u53f7：<\/p>\n

                                  kill<\/span> -11<\/span> 213784<\/span><\/p>\n

                                  \u2003\u2003\u56e0\u4e3a SIGSEGV \u5bf9\u5e94\u7684\u7f16\u53f7\u5c31\u662f 11\u3002<\/p>\n

                                  \u2003\u2003\u6b64\u65f6\u8fdb\u7a0b\u4f1a\u6309\u7167 SIGSEGV \u7684\u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c\u7ec8\u6b62\u3002<\/p>\n

                                  \n

                                  \u4e94\u3001\u901a\u8fc7\u7cfb\u7edf\u8c03\u7528\u4ea7\u751f\u4fe1\u53f7<\/h3>\n

                                  \u2003\u2003\u524d\u9762\u4f7f\u7528\u7684 kill \u547d\u4ee4，\u672c\u8d28\u4e0a\u4e5f\u662f\u901a\u8fc7\u7cfb\u7edf\u8c03\u7528\u5b9e\u73b0\u7684\u3002<\/p>\n

                                  \u2003\u2003Linux \u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u51e0\u4e2a\u5e38\u7528\u63a5\u53e3：<\/p>\n

                                    \n
                                  • kill()<\/li>\n
                                  • raise()<\/li>\n
                                  • abort()<\/li>\n<\/ul>\n

                                    \u2003\u2003\u4e0b\u9762\u9010\u4e2a\u8ba4\u8bc6\u3002<\/p>\n

                                    5.1 kill()：\u5411\u6307\u5b9a\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7<\/h4>\n

                                    \u51fd\u6570\u539f\u578b：<\/p>\n

                                    #<\/span>include<\/span> <sys\/types.h><\/span><\/span>
                                    \n#<\/span>include<\/span> <signal.h><\/span><\/span><\/p>\n

                                    int<\/span> kill<\/span>(<\/span>pid_t pid,<\/span> int<\/span> sig)<\/span>;<\/span><\/p>\n

                                    \u53c2\u6570\u8bf4\u660e：<\/p>\n

                                      \n
                                    • pid：\u6307\u5b9a\u76ee\u6807\u8fdb\u7a0b\u3002<\/li>\n
                                    • sig：\u9700\u8981\u53d1\u9001\u7684\u4fe1\u53f7\u7f16\u53f7\u3002<\/li>\n<\/ul>\n

                                      \u8fd4\u56de\u503c：<\/p>\n

                                        \n
                                      • \u6210\u529f：\u8fd4\u56de 0\u3002<\/li>\n
                                      • \u5931\u8d25：\u8fd4\u56de -1，\u5e76\u8bbe\u7f6e errno\u3002<\/li>\n<\/ul>\n

                                        \u2003\u2003\u9700\u8981\u6ce8\u610f，kill() \u5e76\u4e0d\u4e00\u5b9a\u610f\u5473\u7740\u6740\u6b7b\u8fdb\u7a0b\u3002<\/p>\n

                                        \u2003\u2003\u5b83\u771f\u6b63\u7684\u4f5c\u7528\u662f\u53d1\u9001\u6307\u5b9a\u4fe1\u53f7，\u6700\u7ec8\u5982\u4f55\u5904\u7406，\u53d6\u51b3\u4e8e\u76ee\u6807\u8fdb\u7a0b\u5bf9\u8be5\u4fe1\u53f7\u7684\u5904\u7406\u52a8\u4f5c\u3002<\/p>\n

                                        \u4f8b\u5982：<\/p>\n

                                        kill<\/span>(<\/span>pid,<\/span> SIGINT)<\/span>;<\/span><\/p>\n

                                        \u2003\u2003\u8868\u793a\u5411\u6307\u5b9a\u8fdb\u7a0b\u53d1\u9001 SIGINT\u3002<\/p>\n

                                        \u2003\u2003\u53e6\u5916，kill() \u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u8fd8\u6709\u4e0d\u540c\u542b\u4e49：<\/p>\n\npid \u7684\u53d6\u503c\u542b\u4e49<\/tr>\n\n\n\n\n\n
                                        pid > 0<\/td>\n\u5411 PID \u5bf9\u5e94\u7684\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7<\/td>\n<\/tr>\n
                                        pid == 0<\/td>\n\u5411\u8c03\u7528\u8fdb\u7a0b\u6240\u5728\u7684\u8fdb\u7a0b\u7ec4\u53d1\u9001\u4fe1\u53f7<\/td>\n<\/tr>\n
                                        pid == -1<\/td>\n\u5411\u8c03\u7528\u8005\u6709\u6743\u9650\u53d1\u9001\u4fe1\u53f7\u7684\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7<\/td>\n<\/tr>\n
                                        pid < -1<\/td>\n\u5411\u8fdb\u7a0b\u7ec4 ID \u4e3a pid \u7684\u8fdb\u7a0b\u7ec4\u53d1\u9001\u4fe1\u53f7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                        \u2003\u2003\u8fd9\u91cc\u7684 kill() \u9700\u8981\u5177\u5907\u76f8\u5e94\u6743\u9650，\u5426\u5219\u53d1\u9001\u4f1a\u5931\u8d25\u3002<\/p>\n

                                        \u5b9e\u73b0\u81ea\u5df1\u7684 mykill \u547d\u4ee4<\/h5>\n

                                        \u2003\u2003\u7406\u89e3\u4e86\u51fd\u6570\u539f\u578b\u4e4b\u540e，\u6211\u4eec\u53ef\u4ee5\u5c1d\u8bd5\u81ea\u5df1\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684 kill \u547d\u4ee4\u3002<\/p>\n

                                        #<\/span>include<\/span> <iostream><\/span><\/span>
                                        \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                                        \n#<\/span>include<\/span> <sys\/types.h><\/span><\/span>
                                        \n#<\/span>include<\/span> <signal.h><\/span><\/span><\/p>\n

                                        \/\/ mykill -signumber pid<\/span><\/p>\n

                                        int<\/span> main<\/span>(<\/span>int<\/span> argc,<\/span> char<\/span>*<\/span> argv[<\/span>]<\/span>)<\/span>
                                        \n{<\/span>
                                        \n if<\/span> (<\/span>argc !=<\/span> 3<\/span>)<\/span>
                                        \n {<\/span>
                                        \n std::<\/span>cerr <<<\/span> "Usage: "<\/span>
                                        \n <<<\/span> argv[<\/span>0<\/span>]<\/span>
                                        \n <<<\/span> " -signumber pid"<\/span>
                                        \n <<<\/span> std::<\/span>endl;<\/span>
                                        \n return<\/span> 1<\/span>;<\/span>
                                        \n }<\/span><\/p>\n

                                        \/\/ \u53bb\u6389\u4fe1\u53f7\u7f16\u53f7\u524d\u9762\u7684 –<\/span>
                                        \n int<\/span> number =<\/span> std::<\/span>stoi<\/span>(<\/span>argv[<\/span>1<\/span>]<\/span> +<\/span> 1<\/span>)<\/span>;<\/span><\/p>\n

                                        pid_t pid =<\/span> std::<\/span>stoi<\/span>(<\/span>argv[<\/span>2<\/span>]<\/span>)<\/span>;<\/span><\/p>\n

                                        \/\/ \u53d1\u9001\u4fe1\u53f7<\/span>
                                        \n int<\/span> ret =<\/span> kill<\/span>(<\/span>pid,<\/span> number)<\/span>;<\/span><\/p>\n

                                        if<\/span> (<\/span>ret ==<\/span> –<\/span>1<\/span>)<\/span>
                                        \n {<\/span>
                                        \n perror<\/span>(<\/span>"kill"<\/span>)<\/span>;<\/span>
                                        \n return<\/span> 1<\/span>;<\/span>
                                        \n }<\/span><\/p>\n

                                        return<\/span> 0<\/span>;<\/span>
                                        \n}<\/span><\/p>\n

                                        \u7f16\u8bd1：<\/p>\n

                                        g++ mykill.cc -o<\/span> mykill<\/p>\n

                                        \u4f7f\u7528：<\/p>\n

                                        .\/mykill -9<\/span> 213784<\/span><\/p>\n

                                        \u2003\u2003\u8fd9\u6837，\u6211\u4eec\u5c31\u5b9e\u73b0\u4e86\u4e00\u4e2a\u975e\u5e38\u7b80\u5355\u7684\u4fe1\u53f7\u53d1\u9001\u5de5\u5177\u3002<\/p>\n

                                        5.2 raise()：\u7ed9\u81ea\u5df1\u53d1\u9001\u4fe1\u53f7<\/h4>\n

                                        \u2003\u2003\u5982\u679c\u60f3\u8ba9\u4e00\u4e2a\u8fdb\u7a0b\u7ed9\u81ea\u5df1\u53d1\u9001\u4fe1\u53f7，\u5e94\u8be5\u600e\u4e48\u529e？<\/p>\n

                                        \u2003\u2003\u53ef\u4ee5\u4f7f\u7528 raise()\u3002<\/p>\n

                                        \u2003\u2003\u51fd\u6570\u539f\u578b：<\/p>\n

                                        #<\/span>include<\/span> <signal.h><\/span><\/span><\/p>\n

                                        int<\/span> raise<\/span>(<\/span>int<\/span> sig)<\/span>;<\/span><\/p>\n

                                        \u2003\u2003\u4f5c\u7528：<\/p>\n

                                        \u2003\u2003\u5411\u8c03\u7528 raise() \u7684\u8fdb\u7a0b\u53d1\u9001\u6307\u5b9a\u4fe1\u53f7\u3002<\/p>\n

                                        \u2003\u2003\u53ef\u4ee5\u8fd1\u4f3c\u7406\u89e3\u4e3a：<\/p>\n

                                        kill<\/span>(<\/span>getpid<\/span>(<\/span>)<\/span>,<\/span> sig)<\/span>;<\/span><\/p>\n

                                        \u5176\u4e2d：<\/p>\n

                                        getpid<\/span>(<\/span>)<\/span><\/p>\n

                                        \u2003\u2003\u7528\u4e8e\u83b7\u53d6\u5f53\u524d\u8fdb\u7a0b\u7684 PID\u3002<\/p>\n

                                        \u2003\u2003\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50：<\/p>\n

                                        #<\/span>include<\/span> <iostream><\/span><\/span>
                                        \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                                        \n#<\/span>include<\/span> <signal.h><\/span><\/span><\/p>\n

                                        void<\/span> handler<\/span>(<\/span>int<\/span> signumber)<\/span>
                                        \n{<\/span>
                                        \n std::<\/span>cout <<<\/span> "\u83b7\u53d6\u4e86\u4e00\u4e2a\u4fe1\u53f7: "<\/span>
                                        \n <<<\/span> signumber <<<\/span> std::<\/span>endl;<\/span>
                                        \n}<\/span><\/p>\n

                                        int<\/span> main<\/span>(<\/span>)<\/span>
                                        \n{<\/span>
                                        \n \/\/ \u6355\u6349 2 \u53f7\u4fe1\u53f7<\/span>
                                        \n signal<\/span>(<\/span>SIGINT,<\/span> handler)<\/span>;<\/span><\/p>\n

                                        while<\/span> (<\/span>true<\/span>)<\/span>
                                        \n {<\/span>
                                        \n sleep<\/span>(<\/span>1<\/span>)<\/span>;<\/span><\/p>\n

                                        \/\/ \u6bcf\u9694\u4e00\u79d2\u7ed9\u81ea\u5df1\u53d1\u9001\u4e00\u6b21 SIGINT<\/span>
                                        \n raise<\/span>(<\/span>SIGINT)<\/span>;<\/span>
                                        \n }<\/span><\/p>\n

                                        return<\/span> 0<\/span>;<\/span>
                                        \n}<\/span><\/p>\n

                                        \u8fd0\u884c\u7ed3\u679c： \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                        \u2003\u2003\u53ef\u4ee5\u770b\u5230，\u8fdb\u7a0b\u4e0d\u9700\u8981\u4f9d\u8d56\u952e\u76d8，\u4e5f\u4e0d\u9700\u8981\u5176\u4ed6\u8fdb\u7a0b，\u5c31\u80fd\u591f\u901a\u8fc7 raise() \u7ed9\u81ea\u5df1\u53d1\u9001\u4fe1\u53f7\u3002<\/p>\n

                                        5.3 abort()：\u8ba9\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62<\/h4>\n

                                        \u2003\u2003\u524d\u9762\u4e24\u4e2a\u63a5\u53e3\u90fd\u53ef\u4ee5\u53d1\u9001\u6307\u5b9a\u4fe1\u53f7\u3002<\/p>\n

                                        \u2003\u2003\u90a3\u4e48，\u5982\u679c\u6211\u4eec\u60f3\u8ba9\u5f53\u524d\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62\u5462？<\/p>\n

                                        \u2003\u2003\u53ef\u4ee5\u4f7f\u7528 abort()\u3002<\/p>\n

                                        \u2003\u2003\u51fd\u6570\u539f\u578b：<\/p>\n

                                        #<\/span>include<\/span> <stdlib.h><\/span><\/span><\/p>\n

                                        void<\/span> abort<\/span>(<\/span>void<\/span>)<\/span>;<\/span><\/p>\n

                                        \u2003\u2003abort() \u7684\u4f5c\u7528\u662f：<\/p>\n

                                        \u2003\u2003\u4f7f\u5f53\u524d\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62，\u5e76\u4ea7\u751f SIGABRT \u4fe1\u53f7（\u7f16\u53f7 6）\u3002<\/p>\n

                                        \u2003\u2003\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50：<\/p>\n

                                        #<\/span>include<\/span> <iostream><\/span><\/span>
                                        \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                                        \n#<\/span>include<\/span> <stdlib.h><\/span><\/span>
                                        \n#<\/span>include<\/span> <signal.h><\/span><\/span><\/p>\n

                                        void<\/span> handler<\/span>(<\/span>int<\/span> signumber)<\/span>
                                        \n{<\/span>
                                        \n std::<\/span>cout <<<\/span> "\u83b7\u53d6\u4e86\u4e00\u4e2a\u4fe1\u53f7: "<\/span>
                                        \n <<<\/span> signumber <<<\/span> std::<\/span>endl;<\/span>
                                        \n}<\/span><\/p>\n

                                        int<\/span> main<\/span>(<\/span>)<\/span>
                                        \n{<\/span>
                                        \n signal<\/span>(<\/span>SIGABRT,<\/span> handler)<\/span>;<\/span><\/p>\n

                                        while<\/span> (<\/span>true<\/span>)<\/span>
                                        \n {<\/span>
                                        \n sleep<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                                        \n abort<\/span>(<\/span>)<\/span>;<\/span>
                                        \n }<\/span><\/p>\n

                                        return<\/span> 0<\/span>;<\/span>
                                        \n}<\/span><\/p>\n

                                        \u8fd0\u884c\u7ed3\u679c：<\/p>\n

                                        \u83b7\u53d6\u4e86\u4e00\u4e2a\u4fe1\u53f7: 6
                                        \nAborted<\/p>\n

                                        \u2003\u2003\u8fd9\u91cc\u6709\u4e00\u4e2a\u6bd4\u8f83\u7279\u6b8a\u7684\u5730\u65b9：<\/p>\n

                                        \u2003\u2003\u5373\u4f7f\u6211\u4eec\u5df2\u7ecf\u6355\u6349\u4e86 SIGABRT，\u8fdb\u7a0b\u6700\u7ec8\u8fd8\u662f\u4f1a\u7ec8\u6b62\u3002<\/p>\n

                                        \u2003\u2003\u56e0\u4e3a abort() \u7684\u8bbe\u8ba1\u76ee\u7684\u5c31\u662f\u4f7f\u5f53\u524d\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62，\u6355\u6349\u5904\u7406\u51fd\u6570\u5e76\u4e0d\u80fd\u963b\u6b62\u5b83\u6700\u7ec8\u7ec8\u6b62\u8fdb\u7a0b\u3002<\/p>\n

                                        \n

                                        \u516d\u3001\u7531\u8f6f\u4ef6\u6761\u4ef6\u4ea7\u751f\u4fe1\u53f7<\/h3>\n

                                        \u2003\u2003\u524d\u9762\u4ecb\u7ecd\u7684\u4fe1\u53f7，\u5927\u591a\u662f\u901a\u8fc7\u952e\u76d8\u6216\u8005\u4e3b\u52a8\u8c03\u7528\u51fd\u6570\u4ea7\u751f\u7684\u3002<\/p>\n

                                        \u2003\u2003\u4f46\u5b9e\u9645\u4e0a，\u8fd8\u6709\u4e00\u7c7b\u4fe1\u53f7，\u5b83\u4eec\u5e76\u4e0d\u662f\u7531\u7528\u6237\u4e3b\u52a8\u53d1\u9001\u7684，\u800c\u662f\u7531\u67d0\u4e9b\u8f6f\u4ef6\u6761\u4ef6\u89e6\u53d1\u7684\u3002<\/p>\n

                                        \u4f8b\u5982：<\/p>\n

                                          \n
                                        • \u7ba1\u9053\u7684\u8bfb\u7aef\u5173\u95ed\u540e，\u5199\u7aef\u7ee7\u7eed\u5199\u5165\u3002<\/li>\n
                                        • \u5b9a\u65f6\u5668\u5230\u8fbe\u6307\u5b9a\u65f6\u95f4\u3002<\/li>\n<\/ul>\n

                                          \u2003\u2003\u8fd9\u5c31\u662f\u8f6f\u4ef6\u6761\u4ef6\u4ea7\u751f\u7684\u4fe1\u53f7\u3002<\/p>\n

                                          6.1 SIGPIPE：\u7ba1\u9053\u8bfb\u7aef\u5173\u95ed\u540e\u7ee7\u7eed\u5199\u5165<\/h4>\n

                                          \u2003\u2003\u8fd8\u8bb0\u5f97\u4e4b\u524d\u5b66\u4e60\u7684\u533f\u540d\u7ba1\u9053\u5417？<\/p>\n

                                          \u2003\u2003\u7ba1\u9053\u901a\u5e38\u7528\u4e8e\u5177\u6709\u4eb2\u7f18\u5173\u7cfb\u7684\u8fdb\u7a0b\u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n

                                          \u4f8b\u5982：<\/p>\n

                                          \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                          \u2003\u2003\u5982\u679c\u8fdb\u7a0b B \u5173\u95ed\u4e86\u8bfb\u7aef，\u800c\u8fdb\u7a0b A \u4ecd\u7136\u5c1d\u8bd5\u5411\u7ba1\u9053\u5199\u5165\u6570\u636e，\u4f1a\u53d1\u751f\u4ec0\u4e48？<\/p>\n

                                          \u64cd\u4f5c\u7cfb\u7edf\u4f1a\u4ea7\u751f：<\/p>\n

                                          \u2003\u2003SIGPIPE（\u4fe1\u53f7\u7f16\u53f7 13）<\/p>\n

                                          \u2003\u2003\u5176\u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c\u662f\u7ec8\u6b62\u8fdb\u7a0b\u3002<\/p>\n

                                          \u6ce8\u610f：<\/p>\n

                                          \u2003\u2003SIGPIPE \u7684\u4ea7\u751f\u6761\u4ef6\u662f\u7ba1\u9053\u6ca1\u6709\u8bfb\u8005\u65f6\u4ecd\u7136\u5199\u5165，\u800c\u4e0d\u662f\u7ba1\u9053\u7f13\u51b2\u533a\u5df2\u6ee1\u3002<\/p>\n

                                          \u2003\u2003\u8fd9\u662f\u4e24\u4e2a\u5b8c\u5168\u4e0d\u540c\u7684\u6982\u5ff5\u3002<\/p>\n

                                          6.2 alarm()：\u8bbe\u7f6e\u7cfb\u7edf\u95f9\u949f<\/h4>\n

                                          \u2003\u2003\u63a5\u4e0b\u6765\u4ecb\u7ecd\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u51fd\u6570：alarm()\u3002<\/p>\n

                                          \u2003\u2003\u5b83\u53ef\u4ee5\u8ba9\u64cd\u4f5c\u7cfb\u7edf\u5728\u6307\u5b9a\u65f6\u95f4\u540e\u5411\u5f53\u524d\u8fdb\u7a0b\u53d1\u9001 SIGALRM \u4fe1\u53f7\u3002<\/p>\n

                                          \u2003\u2003\u51fd\u6570\u539f\u578b：<\/p>\n

                                          #<\/span>include<\/span> <unistd.h><\/span><\/span><\/p>\n

                                          unsigned<\/span> int<\/span> alarm<\/span>(<\/span>unsigned<\/span> int<\/span> seconds)<\/span>;<\/span><\/p>\n

                                          \u2003\u2003\u5b83\u7684\u4f5c\u7528\u662f：<\/p>\n

                                          \u2003\u2003\u8c03\u7528 alarm(seconds)，\u544a\u8bc9\u64cd\u4f5c\u7cfb\u7edf：<\/p>\n

                                          \u2003\u2003\u5728 seconds \u79d2\u4e4b\u540e，\u5411\u5f53\u524d\u8fdb\u7a0b\u53d1\u9001 SIGALRM \u4fe1\u53f7\u3002<\/p>\n

                                          \u2003\u2003SIGALRM \u7684\u7f16\u53f7\u4e3a 14，\u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c\u662f\u7ec8\u6b62\u8fdb\u7a0b\u3002<\/p>\n

                                          \u4f8b\u5982：<\/p>\n

                                          alarm<\/span>(<\/span>5<\/span>)<\/span>;<\/span><\/p>\n

                                          \u2003\u2003\u8868\u793a\u8bbe\u7f6e\u4e00\u4e2a 5 \u79d2\u540e\u7684\u95f9\u949f\u3002<\/p>\n

                                          \u2003\u20035 \u79d2\u540e，\u5f53\u524d\u8fdb\u7a0b\u5c31\u4f1a\u6536\u5230 SIGALRM\u3002<\/p>\n

                                          \u2003\u2003\u5982\u679c：<\/p>\n

                                          alarm<\/span>(<\/span>0<\/span>)<\/span>;<\/span><\/p>\n

                                          \u2003\u2003\u5219\u8868\u793a\u53d6\u6d88\u4e4b\u524d\u8bbe\u7f6e\u7684\u95f9\u949f\u3002<\/p>\n

                                          alarm() \u7684\u8fd4\u56de\u503c<\/h5>\n

                                          \u2003\u2003alarm() \u7684\u8fd4\u56de\u503c\u6bd4\u8f83\u5bb9\u6613\u8003\u5bdf\u3002<\/p>\n

                                          \u2003\u2003\u5b83\u8fd4\u56de：<\/p>\n

                                          \u2003\u2003\u4e4b\u524d\u8bbe\u7f6e\u7684\u95f9\u949f\u8fd8\u5269\u4f59\u7684\u79d2\u6570\u3002<\/p>\n

                                          \u2003\u2003\u5982\u679c\u4e4b\u524d\u6ca1\u6709\u8bbe\u7f6e\u95f9\u949f，\u5219\u8fd4\u56de 0\u3002<\/p>\n

                                          \u4f8b\u5982：<\/p>\n

                                          alarm<\/span>(<\/span>5<\/span>)<\/span>;<\/span>
                                          \nsleep<\/span>(<\/span>2<\/span>)<\/span>;<\/span><\/p>\n

                                          unsigned<\/span> int<\/span> ret =<\/span> alarm<\/span>(<\/span>10<\/span>)<\/span>;<\/span><\/p>\n

                                          std::<\/span>cout <<<\/span> ret <<<\/span> std::<\/span>endl;<\/span><\/p>\n

                                          \u2003\u2003\u5927\u81f4\u6267\u884c\u8fc7\u7a0b：<\/p>\n

                                          t = 0：<\/p>\n

                                          alarm(5)
                                          \n\u8bbe\u7f6e\u4e00\u4e2a 5 \u79d2\u540e\u7684\u95f9\u949f
                                          \n\u8fd4\u56de 0，\u56e0\u4e3a\u4e4b\u524d\u6ca1\u6709\u95f9\u949f<\/p>\n

                                          t = 2：<\/p>\n

                                          \u5df2\u7ecf\u8fc7\u53bb 2 \u79d2
                                          \n\u539f\u6765\u7684\u95f9\u949f\u8fd8\u5269 3 \u79d2<\/p>\n

                                          \u518d\u6b21\u8c03\u7528 alarm(10)
                                          \n\u8fd4\u56de 3
                                          \n\u540c\u65f6\u5c06\u539f\u6765\u7684\u95f9\u949f\u66ff\u6362\u4e3a 10 \u79d2\u540e\u7684\u65b0\u95f9\u949f<\/p>\n

                                          \u2003\u2003\u6240\u4ee5\u53ef\u4ee5\u603b\u7ed3\u4e3a：<\/p>\n

                                            \n
                                          • \u7b2c\u4e00\u6b21\u8bbe\u7f6e\u95f9\u949f，\u901a\u5e38\u8fd4\u56de 0\u3002<\/li>\n
                                          • \u518d\u6b21\u8bbe\u7f6e\u95f9\u949f，\u8fd4\u56de\u65e7\u95f9\u949f\u5269\u4f59\u65f6\u95f4\u3002<\/li>\n
                                          • \u65b0\u95f9\u949f\u4f1a\u66ff\u6362\u65e7\u95f9\u949f\u3002<\/li>\n
                                          • alarm(0) \u53ef\u4ee5\u53d6\u6d88\u95f9\u949f\u3002<\/li>\n<\/ul>\n

                                            6.3 alarm() \u7684\u57fa\u672c\u9a8c\u8bc1：\u4f53\u4f1a IO \u6548\u7387\u95ee\u9898<\/h4>\n

                                            \u2003\u2003\u6211\u4eec\u5148\u6765\u770b\u4e00\u4e2a\u5b9e\u9a8c\u3002<\/p>\n

                                            \u9700\u6c42：<\/p>\n

                                            \u2003\u2003\u8ba9\u7a0b\u5e8f\u5728 1 \u79d2\u949f\u5185\u4e0d\u65ad\u8ba1\u6570，1 \u79d2\u540e\u901a\u8fc7 SIGALRM \u7ec8\u6b62\u8fdb\u7a0b\u3002<\/p>\n

                                            \u2003\u2003\u7b2c\u4e00\u79cd\u65b9\u5f0f：\u5927\u91cf IO \u64cd\u4f5c\u3002<\/p>\n

                                            #<\/span>include<\/span> <iostream><\/span><\/span>
                                            \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                                            \n#<\/span>include<\/span> <signal.h><\/span><\/span><\/p>\n

                                            int<\/span> main<\/span>(<\/span>)<\/span>
                                            \n{<\/span>
                                            \n int<\/span> count =<\/span> 0<\/span>;<\/span><\/p>\n

                                            alarm<\/span>(<\/span>1<\/span>)<\/span>;<\/span><\/p>\n

                                            while<\/span> (<\/span>true<\/span>)<\/span>
                                            \n {<\/span>
                                            \n std::<\/span>cout <<<\/span> "count : "<\/span>
                                            \n <<<\/span> count <<<\/span> std::<\/span>endl;<\/span><\/p>\n

                                            count++<\/span>;<\/span>
                                            \n }<\/span><\/p>\n

                                            return<\/span> 0<\/span>;<\/span>
                                            \n}<\/span><\/p>\n

                                            \u8fd0\u884c\u7ed3\u679c：<\/p>\n

                                            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                            \u2003\u2003\u7b2c\u4e8c\u79cd\u65b9\u5f0f：\u51cf\u5c11 IO \u64cd\u4f5c\u3002<\/p>\n

                                            #<\/span>include<\/span> <iostream><\/span><\/span>
                                            \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                                            \n#<\/span>include<\/span> <signal.h><\/span><\/span>
                                            \n#<\/span>include<\/span> <cstdlib><\/span><\/span><\/p>\n

                                            int<\/span> count =<\/span> 0<\/span>;<\/span><\/p>\n

                                            void<\/span> handler<\/span>(<\/span>int<\/span> signumber)<\/span>
                                            \n{<\/span>
                                            \n std::<\/span>cout <<<\/span> "count : "<\/span> <<<\/span> count <<<\/span> std::<\/span>endl;<\/span>
                                            \n exit<\/span>(<\/span>0<\/span>)<\/span>;<\/span>
                                            \n}<\/span><\/p>\n

                                            int<\/span> main<\/span>(<\/span>)<\/span>
                                            \n{<\/span>
                                            \n signal<\/span>(<\/span>SIGALRM,<\/span> handler)<\/span>;<\/span><\/p>\n

                                            alarm<\/span>(<\/span>1<\/span>)<\/span>;<\/span><\/p>\n

                                            while<\/span> (<\/span>true<\/span>)<\/span>
                                            \n {<\/span>
                                            \n count++<\/span>;<\/span>
                                            \n }<\/span><\/p>\n

                                            return<\/span> 0<\/span>;<\/span>
                                            \n}<\/span><\/p>\n

                                            \u8fd0\u884c\u7ed3\u679c：<\/p>\n

                                            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                            \u2003\u2003\u53ef\u4ee5\u53d1\u73b0，\u7b2c\u4e8c\u79cd\u65b9\u5f0f\u5728\u76f8\u540c\u65f6\u95f4\u5185\u5b8c\u6210\u7684\u8ba1\u6570\u660e\u663e\u66f4\u591a\u3002<\/p>\n

                                            \u4e3a\u4ec0\u4e48？<\/p>\n

                                            \u2003\u2003\u56e0\u4e3a\u7b2c\u4e00\u79cd\u65b9\u5f0f\u6bcf\u6b21\u5faa\u73af\u90fd\u8981\u8fdb\u884c\u8f93\u51fa\u64cd\u4f5c，\u800c IO \u64cd\u4f5c\u901a\u5e38\u6d89\u53ca\u7f13\u51b2\u533a\u7ba1\u7406，\u751a\u81f3\u53ef\u80fd\u53d1\u751f\u7528\u6237\u6001\u4e0e\u5185\u6838\u6001\u4e4b\u95f4\u7684\u5207\u6362\u3002<\/p>\n

                                            \u2003\u2003\u7b2c\u4e8c\u79cd\u65b9\u5f0f\u53ea\u8fdb\u884c\u8ba1\u6570，\u51cf\u5c11\u4e86\u5927\u91cf IO \u5f00\u9500\u3002<\/p>\n

                                            \u2003\u2003\u56e0\u6b64，\u6211\u4eec\u53ef\u4ee5\u5f97\u51fa\u4e00\u4e2a\u7ed3\u8bba：<\/p>\n

                                            \u2003\u2003IO \u64cd\u4f5c\u901a\u5e38\u6bd4\u7b80\u5355\u7684\u5185\u5b58\u8ba1\u7b97\u5f00\u9500\u66f4\u5927，\u9891\u7e41 IO \u4f1a\u660e\u663e\u5f71\u54cd\u7a0b\u5e8f\u8fd0\u884c\u6548\u7387\u3002<\/p>\n

                                            6.4 \u5982\u4f55\u8bbe\u7f6e\u91cd\u590d\u95f9\u949f？<\/h4>\n

                                            \u2003\u2003\u524d\u9762\u6211\u4eec\u53d1\u73b0，alarm() \u8bbe\u7f6e\u7684\u95f9\u949f\u662f\u4e00\u6b21\u6027\u7684\u3002<\/p>\n

                                            \u2003\u2003\u5f53\u65f6\u95f4\u5230\u8fbe\u540e，\u5185\u6838\u4f1a\u53d1\u9001 SIGALRM，\u539f\u6765\u7684\u95f9\u949f\u5c31\u7ed3\u675f\u4e86\u3002<\/p>\n

                                            \u2003\u2003\u90a3\u4e48，\u5982\u679c\u6211\u4eec\u60f3\u5b9e\u73b0\u6bcf\u9694 1 \u79d2\u6267\u884c\u4e00\u6b21\u4efb\u52a1，\u5e94\u8be5\u600e\u4e48\u529e？<\/p>\n

                                            \u2003\u2003\u53ef\u4ee5\u5728\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u4e2d\u91cd\u65b0\u8bbe\u7f6e\u95f9\u949f\u3002<\/p>\n

                                            \u2003\u2003\u8fd9\u91cc\u8fd8\u9700\u8981\u8ba4\u8bc6\u4e00\u4e2a\u51fd\u6570：pause()\u3002<\/p>\n

                                            \u2003\u2003\u51fd\u6570\u539f\u578b：<\/p>\n

                                            #<\/span>include<\/span> <unistd.h><\/span><\/span><\/p>\n

                                            int<\/span> pause<\/span>(<\/span>void<\/span>)<\/span>;<\/span><\/p>\n

                                            \u2003\u2003pause() \u7684\u4f5c\u7528：<\/p>\n

                                            \u2003\u2003\u8ba9\u5f53\u524d\u8fdb\u7a0b\u6302\u8d77，\u76f4\u5230\u6355\u6349\u5230\u4e00\u4e2a\u4fe1\u53f7，\u5e76\u4e14\u5bf9\u5e94\u7684\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u8fd4\u56de\u3002<\/p>\n

                                            \u2003\u2003\u5982\u679c\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u6b63\u5e38\u8fd4\u56de，pause() \u4f1a\u8fd4\u56de -1，\u5e76\u5c06 errno \u8bbe\u7f6e\u4e3a EINTR\u3002<\/p>\n

                                            \u6765\u770b\u4e00\u4e2a\u4f8b\u5b50：<\/p>\n

                                            #<\/span>include<\/span> <iostream><\/span><\/span>
                                            \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                                            \n#<\/span>include<\/span> <signal.h><\/span><\/span><\/p>\n

                                            int<\/span> gcount =<\/span> 0<\/span>;<\/span><\/p>\n

                                            void<\/span> handler<\/span>(<\/span>int<\/span> signo)<\/span>
                                            \n{<\/span>
                                            \n std::<\/span>cout <<<\/span> "\u6536\u5230\u4fe1\u53f7: "<\/span> <<<\/span> signo <<<\/span> std::<\/span>endl;<\/span><\/p>\n

                                            \/\/ \u91cd\u65b0\u8bbe\u7f6e 1 \u79d2\u540e\u7684\u95f9\u949f<\/span>
                                            \n alarm<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
                                            \n}<\/span><\/p>\n

                                            int<\/span> main<\/span>(<\/span>)<\/span>
                                            \n{<\/span>
                                            \n signal<\/span>(<\/span>SIGALRM,<\/span> handler)<\/span>;<\/span><\/p>\n

                                            \/\/ \u8bbe\u7f6e\u7b2c\u4e00\u6b21\u95f9\u949f<\/span>
                                            \n alarm<\/span>(<\/span>1<\/span>)<\/span>;<\/span><\/p>\n

                                            while<\/span> (<\/span>true<\/span>)<\/span>
                                            \n {<\/span>
                                            \n \/\/ \u7b49\u5f85\u4fe1\u53f7<\/span>
                                            \n pause<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

                                            std::<\/span>cout <<<\/span> "\u6211\u9192\u6765\u4e86…"<\/span> <<<\/span> std::<\/span>endl;<\/span><\/p>\n

                                            gcount++<\/span>;<\/span><\/p>\n

                                            std::<\/span>cout <<<\/span> "gcount: "<\/span>
                                            \n <<<\/span> gcount <<<\/span> std::<\/span>endl;<\/span>
                                            \n }<\/span><\/p>\n

                                            return<\/span> 0<\/span>;<\/span>
                                            \n}<\/span><\/p>\n

                                            \u2003\u2003\u8fd0\u884c\u4e4b\u540e，\u6211\u4eec\u4f1a\u53d1\u73b0\u7a0b\u5e8f\u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4\u5c31\u4f1a\u88ab\u5524\u9192\u4e00\u6b21\u3002<\/p>\n

                                            \u2003\u2003\u6574\u4e2a\u8fc7\u7a0b\u53ef\u4ee5\u7406\u89e3\u4e3a：<\/p>\n

                                            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                            \n

                                            \u4e03\u3001\u5982\u4f55\u7406\u89e3\u8f6f\u4ef6\u6761\u4ef6？<\/h3>\n

                                            \u2003\u2003\u524d\u9762\u6211\u4eec\u4ecb\u7ecd\u4e86 SIGPIPE \u548c SIGALRM\u3002<\/p>\n

                                            \u2003\u2003\u5b83\u4eec\u867d\u7136\u4ea7\u751f\u539f\u56e0\u4e0d\u540c，\u4f46\u6709\u4e00\u4e2a\u5171\u540c\u7279\u70b9：<\/p>\n

                                            \u2003\u2003\u4fe1\u53f7\u4e0d\u662f\u7531 CPU \u6267\u884c\u9519\u8bef\u6307\u4ee4\u76f4\u63a5\u4ea7\u751f\u7684，\u800c\u662f\u7531\u8f6f\u4ef6\u72b6\u6001\u6216\u8f6f\u4ef6\u8bbe\u7f6e\u7684\u6761\u4ef6\u89e6\u53d1\u7684\u3002<\/p>\n

                                            \u4f8b\u5982：<\/p>\n

                                            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                            \u518d\u4f8b\u5982：<\/p>\n

                                            \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                            \u2003\u2003\u8fd9\u5c31\u662f\u8f6f\u4ef6\u6761\u4ef6\u4ea7\u751f\u4fe1\u53f7\u7684\u57fa\u672c\u542b\u4e49\u3002<\/p>\n

                                            \n

                                            \u516b\u3001\u7cfb\u7edf\u95f9\u949f\u7684\u5e95\u5c42\u539f\u7406<\/h3>\n

                                            \u2003\u2003\u524d\u9762\u6211\u4eec\u901a\u8fc7 alarm() \u5b9e\u73b0\u4e86\u5b9a\u65f6\u529f\u80fd\u3002<\/p>\n

                                            \u2003\u2003\u4f46\u8fd8\u6709\u4e00\u4e2a\u503c\u5f97\u601d\u8003\u7684\u95ee\u9898：<\/p>\n

                                            \u2003\u2003\u64cd\u4f5c\u7cfb\u7edf\u662f\u600e\u4e48\u8bb0\u4f4f\u6bcf\u4e2a\u8fdb\u7a0b\u8bbe\u7f6e\u7684\u95f9\u949f，\u5e76\u4e14\u5728\u65f6\u95f4\u5230\u8fbe\u65f6\u51c6\u786e\u53d1\u9001\u4fe1\u53f7\u7684？<\/p>\n

                                            \u2003\u2003\u8fd9\u5c31\u6d89\u53ca\u64cd\u4f5c\u7cfb\u7edf\u5bf9\u5b9a\u65f6\u5668\u7684\u7ba1\u7406\u3002<\/p>\n

                                            8.1 \u64cd\u4f5c\u7cfb\u7edf\u4e3a\u4ec0\u4e48\u9700\u8981\u7ba1\u7406\u5b9a\u65f6\u5668？<\/h4>\n

                                            \u2003\u2003\u5047\u8bbe\u7cfb\u7edf\u4e2d\u6709\u4e09\u4e2a\u8fdb\u7a0b：<\/p>\n

                                            \u8fdb\u7a0b A：\u8bbe\u7f6e 5 \u79d2\u540e\u53d1\u9001\u4fe1\u53f7
                                            \n\u8fdb\u7a0b B：\u8bbe\u7f6e 10 \u79d2\u540e\u53d1\u9001\u4fe1\u53f7
                                            \n\u8fdb\u7a0b C：\u8bbe\u7f6e 3 \u79d2\u540e\u53d1\u9001\u4fe1\u53f7<\/p>\n

                                            \u2003\u2003\u64cd\u4f5c\u7cfb\u7edf\u5fc5\u987b\u77e5\u9053：<\/p>\n

                                              \n
                                            • \u54ea\u4e2a\u8fdb\u7a0b\u8bbe\u7f6e\u4e86\u95f9\u949f？<\/li>\n
                                            • \u95f9\u949f\u4ec0\u4e48\u65f6\u5019\u5230\u671f？<\/li>\n
                                            • \u5230\u671f\u4e4b\u540e\u5e94\u8be5\u6267\u884c\u4ec0\u4e48\u64cd\u4f5c？<\/li>\n<\/ul>\n

                                              \u2003\u2003\u5982\u679c\u53ea\u8bb0\u5f55\u65f6\u95f4，\u5374\u4e0d\u77e5\u9053\u5bf9\u5e94\u7684\u8fdb\u7a0b，\u5c31\u65e0\u6cd5\u51c6\u786e\u5730\u53d1\u9001\u4fe1\u53f7\u3002<\/p>\n

                                              \u2003\u2003\u56e0\u6b64，\u64cd\u4f5c\u7cfb\u7edf\u9700\u8981\u5bf9\u5b9a\u65f6\u5668\u8fdb\u884c\u7edf\u4e00\u7ba1\u7406\u3002<\/p>\n

                                              \u2003\u2003\u8fd9\u4e5f\u7b26\u5408\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u601d\u60f3：<\/p>\n

                                              \u2003\u2003\u5148\u63cf\u8ff0，\u518d\u7ec4\u7ec7\u3002<\/p>\n

                                              8.2 \u5b9a\u65f6\u5668\u7684\u6570\u636e\u7ed3\u6784<\/h4>\n

                                              \u2003\u2003Linux \u5185\u6838\u4e2d\u66fe\u4f7f\u7528\u8fc7\u7c7b\u4f3c\u4e0b\u9762\u7684\u5b9a\u65f6\u5668\u7ed3\u6784：<\/p>\n

                                              struct<\/span> timer_list<\/span>
                                              \n{<\/span>
                                              \n struct<\/span> list_head<\/span> entry;<\/span><\/p>\n

                                              unsigned<\/span> long<\/span> expires;<\/span><\/p>\n

                                              void<\/span> (<\/span>*<\/span>function)<\/span>(<\/span>unsigned<\/span> long<\/span>)<\/span>;<\/span><\/p>\n

                                              unsigned<\/span> long<\/span> data;<\/span><\/p>\n

                                              struct<\/span> tvec_t_base_s<\/span> *<\/span>base;<\/span>
                                              \n}<\/span>;<\/span><\/p>\n

                                              \u2003\u2003\u8fd9\u662f\u8f83\u65e9\u671f Linux \u5185\u6838\u7248\u672c\u4e2d\u7684\u7ed3\u6784\u793a\u610f，\u73b0\u4ee3\u5185\u6838\u7684\u5177\u4f53\u5b9e\u73b0\u5df2\u7ecf\u6709\u6240\u53d8\u5316\u3002<\/p>\n

                                              \u2003\u2003\u5176\u4e2d\u6bd4\u8f83\u91cd\u8981\u7684\u662f\u4e24\u4e2a\u6210\u5458：<\/p>\n

                                              \u2003\u2003expires：\u8868\u793a\u5b9a\u65f6\u5668\u7684\u5230\u671f\u65f6\u95f4\u3002<\/p>\n

                                              \u4f8b\u5982：<\/p>\n

                                              expires = 100<\/p>\n

                                              \u2003\u2003\u53ef\u4ee5\u7406\u89e3\u4e3a\u5b9a\u65f6\u5668\u5728\u6307\u5b9a\u7684\u65f6\u95f4\u70b9\u5230\u671f\u3002<\/p>\n

                                              \u2003\u2003function：\u8868\u793a\u5b9a\u65f6\u5668\u5230\u671f\u540e\u9700\u8981\u6267\u884c\u7684\u56de\u8c03\u51fd\u6570\u3002<\/p>\n

                                              \u2003\u2003\u4f8b\u5982，\u95f9\u949f\u5230\u671f\u540e，\u76f8\u5173\u5904\u7406\u903b\u8f91\u5c31\u4f1a\u5411\u5bf9\u5e94\u8fdb\u7a0b\u53d1\u9001 SIGALRM\u3002<\/p>\n

                                              8.3 \u591a\u4e2a\u5b9a\u65f6\u5668\u5982\u4f55\u7ec4\u7ec7？<\/h4>\n

                                              \u2003\u2003\u5047\u8bbe\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u540c\u65f6\u5b58\u5728\u5f88\u591a\u5b9a\u65f6\u5668：<\/p>\n

                                              \u5b9a\u65f6\u5668 A：5 \u79d2
                                              \n\u5b9a\u65f6\u5668 B：10 \u79d2
                                              \n\u5b9a\u65f6\u5668 C：3 \u79d2
                                              \n\u5b9a\u65f6\u5668 D：1 \u79d2<\/p>\n

                                              \u2003\u2003\u64cd\u4f5c\u7cfb\u7edf\u9700\u8981\u5feb\u901f\u627e\u5230\u6700\u5148\u5230\u671f\u7684\u5b9a\u65f6\u5668\u3002<\/p>\n

                                              \u2003\u2003\u4ece\u6570\u636e\u7ed3\u6784\u7684\u89d2\u5ea6，\u53ef\u4ee5\u4f7f\u7528\u6700\u5c0f\u5806\u6765\u5e2e\u52a9\u7406\u89e3：<\/p>\n

                                              1
                                              \n \/ \\\\
                                              \n 3 5
                                              \n \/
                                              \n 10<\/p>\n

                                              \u2003\u2003\u6700\u5c0f\u5806\u6709\u4e00\u4e2a\u7279\u70b9：<\/p>\n

                                              \u2003\u2003\u5806\u9876\u5143\u7d20\u6c38\u8fdc\u662f\u5f53\u524d\u6700\u5c0f\u7684\u5143\u7d20\u3002<\/p>\n

                                              \u2003\u2003\u56e0\u6b64，\u60f3\u77e5\u9053\u54ea\u4e2a\u5b9a\u65f6\u5668\u6700\u5148\u5230\u671f，\u53ea\u9700\u8981\u67e5\u770b\u5806\u9876\u5373\u53ef\u3002<\/p>\n

                                                \n
                                              • \u83b7\u53d6\u6700\u5c0f\u503c：O(1)<\/li>\n
                                              • \u63d2\u5165\u5143\u7d20：O(log n)<\/li>\n
                                              • \u5220\u9664\u5806\u9876：O(log n)<\/li>\n<\/ul>\n
                                                \n

                                                \u4e5d\u3001\u786c\u4ef6\u5f02\u5e38\u4ea7\u751f\u4fe1\u53f7<\/h3>\n

                                                \u2003\u2003\u524d\u9762\u4ecb\u7ecd\u7684\u51e0\u79cd\u4fe1\u53f7，\u5927\u591a\u6765\u81ea\u7528\u6237\u64cd\u4f5c\u6216\u8005\u8f6f\u4ef6\u6761\u4ef6\u3002<\/p>\n

                                                \u2003\u2003\u63a5\u4e0b\u6765，\u6211\u4eec\u770b\u770b\u53e6\u4e00\u79cd\u6bd4\u8f83\u7279\u6b8a\u7684\u4ea7\u751f\u65b9\u5f0f：<\/p>\n

                                                \u2003\u2003\u786c\u4ef6\u5f02\u5e38\u3002<\/p>\n

                                                \u4f8b\u5982：<\/p>\n

                                                  \n
                                                • \u6574\u6570\u9664\u96f6\u3002<\/li>\n
                                                • \u8bbf\u95ee\u975e\u6cd5\u5185\u5b58\u5730\u5740\u3002<\/li>\n
                                                • \u5411\u53ea\u8bfb\u5185\u5b58\u5199\u5165\u6570\u636e\u3002<\/li>\n<\/ul>\n

                                                  \u2003\u2003\u8fd9\u4e9b\u64cd\u4f5c\u90fd\u53ef\u80fd\u5bfc\u81f4\u7a0b\u5e8f\u51fa\u73b0\u5f02\u5e38\u3002<\/p>\n

                                                  \u2003\u2003\u90a3\u4e48，\u64cd\u4f5c\u7cfb\u7edf\u662f\u600e\u4e48\u77e5\u9053\u7a0b\u5e8f\u53d1\u751f\u4e86\u9519\u8bef\u7684？<\/p>\n

                                                  9.1 \u9664\u96f6\u9519\u8bef：SIGFPE<\/h4>\n

                                                  \u5148\u6765\u770b\u4e00\u4e2a\u6700\u7b80\u5355\u7684\u4f8b\u5b50：<\/p>\n

                                                  #<\/span>include<\/span> <stdio.h><\/span><\/span>
                                                  \n#<\/span>include<\/span> <signal.h><\/span><\/span>
                                                  \n#<\/span>include<\/span> <unistd.h><\/span><\/span><\/p>\n

                                                  void<\/span> handler<\/span>(<\/span>int<\/span> sig)<\/span>
                                                  \n{<\/span>
                                                  \n printf<\/span>(<\/span>"catch a sig : %d\\\\n"<\/span>,<\/span> sig)<\/span>;<\/span>
                                                  \n}<\/span><\/p>\n

                                                  int<\/span> main<\/span>(<\/span>)<\/span>
                                                  \n{<\/span>
                                                  \n sleep<\/span>(<\/span>1<\/span>)<\/span>;<\/span><\/p>\n

                                                  int<\/span> a =<\/span> 10<\/span>;<\/span><\/p>\n

                                                  a \/=<\/span> 0<\/span>;<\/span><\/p>\n

                                                  while<\/span> (<\/span>1<\/span>)<\/span>;<\/span><\/p>\n

                                                  return<\/span> 0<\/span>;<\/span>
                                                  \n}<\/span><\/p>\n

                                                  \u8fd0\u884c\u7a0b\u5e8f：<\/p>\n

                                                  Floating point exception<\/p>\n

                                                  \u2003\u2003\u8fd9\u91cc\u4ea7\u751f\u7684\u662f：<\/p>\n

                                                  \u2003\u2003SIGFPE（\u4fe1\u53f7\u7f16\u53f7 8）<\/p>\n

                                                  \u2003\u2003SIGFPE \u7684\u5168\u79f0\u662f Floating Point Exception，\u8868\u793a\u7b97\u672f\u8fd0\u7b97\u5f02\u5e38\u3002<\/p>\n

                                                  \u2003\u2003\u867d\u7136\u540d\u5b57\u4e2d\u6709 Floating Point，\u4f46\u5b83\u5e76\u4e0d\u53ea\u9488\u5bf9\u6d6e\u70b9\u8fd0\u7b97，\u6574\u6570\u9664\u96f6\u4e5f\u53ef\u80fd\u4ea7\u751f SIGFPE\u3002<\/p>\n

                                                  \u2003\u2003\u6211\u4eec\u53ef\u4ee5\u5c1d\u8bd5\u6355\u6349\u5b83：<\/p>\n

                                                  signal<\/span>(<\/span>SIGFPE,<\/span> handler)<\/span>;<\/span><\/p>\n

                                                  \u2003\u2003\u53d1\u751f\u5f02\u5e38\u65f6，\u5904\u7406\u51fd\u6570\u5c31\u4f1a\u6536\u5230\u5bf9\u5e94\u7684\u4fe1\u53f7\u7f16\u53f7\u3002<\/p>\n

                                                  9.2 \u91ce\u6307\u9488：SIGSEGV<\/h4>\n

                                                  \u2003\u2003\u518d\u6765\u770b\u53e6\u4e00\u4e2a\u975e\u5e38\u5e38\u89c1\u7684\u9519\u8bef：<\/p>\n

                                                  \u2003\u2003\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee\u3002<\/p>\n

                                                  \u4f8b\u5982：<\/p>\n

                                                  #<\/span>include<\/span> <stdio.h><\/span><\/span>
                                                  \n#<\/span>include<\/span> <signal.h><\/span><\/span>
                                                  \n#<\/span>include<\/span> <unistd.h><\/span><\/span><\/p>\n

                                                  void<\/span> handler<\/span>(<\/span>int<\/span> sig)<\/span>
                                                  \n{<\/span>
                                                  \n printf<\/span>(<\/span>"catch a sig : %d\\\\n"<\/span>,<\/span> sig)<\/span>;<\/span>
                                                  \n}<\/span><\/p>\n

                                                  int<\/span> main<\/span>(<\/span>)<\/span>
                                                  \n{<\/span>
                                                  \n sleep<\/span>(<\/span>1<\/span>)<\/span>;<\/span><\/p>\n

                                                  int<\/span>*<\/span> p =<\/span> NULL<\/span>;<\/span><\/p>\n

                                                  *<\/span>p =<\/span> 100<\/span>;<\/span><\/p>\n

                                                  while<\/span> (<\/span>1<\/span>)<\/span>;<\/span><\/p>\n

                                                  return<\/span> 0<\/span>;<\/span>
                                                  \n}<\/span><\/p>\n

                                                  \u8fd0\u884c：<\/p>\n

                                                  Segmentation fault (core dumped)<\/p>\n

                                                  \u2003\u2003\u8fd9\u662f\u56e0\u4e3a\u6211\u4eec\u5c1d\u8bd5\u901a\u8fc7\u7a7a\u6307\u9488\u8bbf\u95ee\u5185\u5b58\u3002<\/p>\n

                                                  \u2003\u2003\u7cfb\u7edf\u4ea7\u751f\u7684\u4fe1\u53f7\u662f：<\/p>\n

                                                  \u2003\u2003SIGSEGV（\u4fe1\u53f7\u7f16\u53f7 11）<\/p>\n

                                                  \u2003\u2003\u5b83\u8868\u793a\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee\u3002<\/p>\n

                                                  \u2003\u2003\u5e38\u89c1\u60c5\u51b5\u5305\u62ec：<\/p>\n

                                                    \n
                                                  • \u89e3\u5f15\u7528\u7a7a\u6307\u9488\u3002<\/li>\n
                                                  • \u8bbf\u95ee\u6ca1\u6709\u6743\u9650\u7684\u5185\u5b58\u3002<\/li>\n
                                                  • \u5411\u53ea\u8bfb\u5185\u5b58\u533a\u57df\u5199\u5165\u6570\u636e\u3002<\/li>\n<\/ul>\n
                                                      \n
                                                    • \u8bbf\u95ee\u5df2\u7ecf\u5931\u6548\u7684\u5185\u5b58\u5730\u5740\u3002<\/li>\n<\/ul>\n

                                                      9.3 \u4e3a\u4ec0\u4e48\u64cd\u4f5c\u7cfb\u7edf\u80fd\u591f\u53d1\u73b0\u8fd9\u4e9b\u9519\u8bef？<\/h4>\n

                                                      \u2003\u2003\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u95ee\u9898\u3002<\/p>\n

                                                      \u2003\u2003\u6211\u4eec\u5148\u56de\u5fc6\u4e00\u4e0b\u4e4b\u524d\u5b66\u4e60\u7684\u865a\u62df\u5185\u5b58\u548c\u5730\u5740\u8f6c\u6362\u3002<\/p>\n

                                                      \u2003\u2003\u5728\u73b0\u4ee3\u64cd\u4f5c\u7cfb\u7edf\u4e2d，\u8fdb\u7a0b\u4f7f\u7528\u7684\u662f\u865a\u62df\u5730\u5740\u3002<\/p>\n

                                                      \u2003\u2003\u5f53\u7a0b\u5e8f\u8bbf\u95ee\u4e00\u4e2a\u5730\u5740\u65f6，CPU \u4e2d\u7684 MMU \u4f1a\u8d1f\u8d23\u5c06\u865a\u62df\u5730\u5740\u8f6c\u6362\u4e3a\u7269\u7406\u5730\u5740\u3002<\/p>\n

                                                      \u2003\u2003\u6574\u4e2a\u8fc7\u7a0b\u53ef\u4ee5\u7b80\u5355\u7406\u89e3\u4e3a：<\/p>\n

                                                      \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                      \u2003\u2003\u8fd9\u91cc\u6d89\u53ca\u4e24\u4e2a\u91cd\u8981\u7684\u786c\u4ef6：<\/p>\n

                                                      CPU：<\/p>\n

                                                      \u2003\u2003\u8d1f\u8d23\u6267\u884c\u6307\u4ee4，\u5f53\u6267\u884c\u5230\u975e\u6cd5\u64cd\u4f5c\u65f6，\u53ef\u80fd\u89e6\u53d1\u5904\u7406\u5668\u5f02\u5e38\u3002<\/p>\n

                                                      \u2003\u2003\u4f8b\u5982\u6574\u6570\u9664\u96f6，\u5c31\u53ef\u80fd\u89e6\u53d1\u5904\u7406\u5668\u7684\u9664\u6cd5\u5f02\u5e38\u3002<\/p>\n

                                                      MMU：<\/p>\n

                                                      \u2003\u2003\u8d1f\u8d23\u5185\u5b58\u5730\u5740\u8f6c\u6362\u548c\u8bbf\u95ee\u6743\u9650\u68c0\u67e5\u3002<\/p>\n

                                                      \u2003\u2003\u5f53\u7a0b\u5e8f\u8bbf\u95ee\u975e\u6cd5\u5730\u5740\u6216\u8005\u8fdd\u53cd\u5185\u5b58\u8bbf\u95ee\u6743\u9650\u65f6，MMU \u53ef\u4ee5\u89e6\u53d1\u9875\u6545\u969c\u7b49\u5f02\u5e38\u3002<\/p>\n

                                                      \u2003\u2003\u968f\u540e，CPU \u5c06\u63a7\u5236\u6743\u4ea4\u7ed9\u64cd\u4f5c\u7cfb\u7edf\u7684\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f\u3002<\/p>\n

                                                      \u2003\u2003\u64cd\u4f5c\u7cfb\u7edf\u6839\u636e\u5f02\u5e38\u7c7b\u578b\u548c\u53d1\u751f\u4f4d\u7f6e，\u5224\u65ad\u5e94\u8be5\u91c7\u53d6\u4ec0\u4e48\u5904\u7406\u65b9\u5f0f，\u5e76\u5411\u5bf9\u5e94\u8fdb\u7a0b\u4ea7\u751f\u76f8\u5e94\u4fe1\u53f7\u3002<\/p>\n

                                                      \u56e0\u6b64，\u9700\u8981\u8bb0\u4f4f：<\/p>\n

                                                      \u2003\u2003\u786c\u4ef6\u8d1f\u8d23\u68c0\u6d4b\u5f02\u5e38\u5e76\u901a\u77e5\u5185\u6838，\u771f\u6b63\u5411\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7\u7684\u662f\u64cd\u4f5c\u7cfb\u7edf\u3002<\/p>\n

                                                      9.4 \u4e3a\u4ec0\u4e48\u6355\u6349 SIGSEGV \u540e，\u7a0b\u5e8f\u53ef\u80fd\u4e00\u76f4\u6253\u5370？<\/h4>\n

                                                      \u2003\u2003\u8fd9\u91cc\u6709\u4e00\u4e2a\u6bd4\u8f83\u5bb9\u6613\u8ba9\u4eba\u56f0\u60d1\u7684\u73b0\u8c61\u3002<\/p>\n

                                                      \u2003\u2003\u5047\u8bbe\u6211\u4eec\u6355\u6349\u4e86 SIGSEGV：<\/p>\n

                                                      void<\/span> handler<\/span>(<\/span>int<\/span> sig)<\/span>
                                                      \n{<\/span>
                                                      \n printf<\/span>(<\/span>"catch a sig : %d\\\\n"<\/span>,<\/span> sig)<\/span>;<\/span>
                                                      \n}<\/span><\/p>\n

                                                      \u7136\u540e\u6267\u884c：<\/p>\n

                                                      int<\/span>*<\/span> p =<\/span> NULL<\/span>;<\/span>
                                                      \n*<\/span>p =<\/span> 100<\/span>;<\/span><\/p>\n

                                                      \u53ef\u80fd\u51fa\u73b0：<\/p>\n

                                                      catch a sig : 11
                                                      \ncatch a sig : 11
                                                      \ncatch a sig : 11
                                                      \n…<\/p>\n

                                                      \u4e3a\u4ec0\u4e48\u540c\u4e00\u4e2a\u4fe1\u53f7\u4f1a\u4e0d\u65ad\u4ea7\u751f？<\/p>\n

                                                      \u539f\u56e0\u5728\u4e8e：<\/p>\n

                                                      \u2003\u2003\u7a0b\u5e8f\u53d1\u751f\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee\u540e，\u5904\u7406\u51fd\u6570\u867d\u7136\u6267\u884c\u4e86，\u4f46\u539f\u6765\u7684\u9519\u8bef\u6307\u4ee4\u5e76\u6ca1\u6709\u5f97\u5230\u4fee\u590d\u3002<\/p>\n

                                                      \u2003\u2003\u5f53\u5904\u7406\u51fd\u6570\u8fd4\u56de\u540e，\u7a0b\u5e8f\u53ef\u80fd\u91cd\u65b0\u56de\u5230\u53d1\u751f\u5f02\u5e38\u7684\u6307\u4ee4\u4f4d\u7f6e\u7ee7\u7eed\u6267\u884c\u3002<\/p>\n

                                                      \u2003\u2003\u518d\u6b21\u6267\u884c\u65f6，\u53c8\u4f1a\u53d1\u751f\u76f8\u540c\u7684\u975e\u6cd5\u8bbf\u95ee，\u4e8e\u662f\u518d\u6b21\u4ea7\u751f SIGSEGV\u3002<\/p>\n

                                                      \u2003\u2003\u5982\u6b64\u53cd\u590d，\u5c31\u53ef\u80fd\u5f62\u6210\u8fde\u7eed\u7684\u5f02\u5e38\u5904\u7406\u3002<\/p>\n

                                                      \u2003\u2003\u56e0\u6b64，\u6355\u6349\u4fe1\u53f7\u5e76\u4e0d\u610f\u5473\u7740\u4fee\u590d\u4e86\u7a0b\u5e8f\u9519\u8bef\u3002<\/p>\n

                                                      \u2003\u2003\u5bf9\u4e8e SIGSEGV\u3001SIGFPE \u8fd9\u7c7b\u786c\u4ef6\u5f02\u5e38，\u901a\u5e38\u4e0d\u80fd\u7b80\u5355\u5730\u6355\u6349\u540e\u7ee7\u7eed\u6267\u884c\u539f\u7a0b\u5e8f\u3002<\/p>\n

                                                      \n

                                                      \u5341\u3001Core Dump：\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62\u540e\u7684\u73b0\u573a\u4fdd\u5b58<\/h3>\n

                                                      \u2003\u2003\u524d\u9762\u5728\u5b66\u4e60 Ctrl+\\\\ \u65f6，\u6211\u4eec\u89c1\u8fc7：<\/p>\n

                                                      Quit (core dumped)<\/p>\n

                                                      \u2003\u2003\u8fd9\u91cc\u5c31\u6b63\u5f0f\u8ba4\u8bc6\u4e00\u4e0b Core Dump\u3002<\/p>\n

                                                      10.1 \u4ec0\u4e48\u662f Core Dump？<\/h4>\n

                                                      \u2003\u2003\u5f53\u8fdb\u7a0b\u56e0\u4e3a\u67d0\u4e9b\u4fe1\u53f7\u5f02\u5e38\u7ec8\u6b62\u65f6，\u64cd\u4f5c\u7cfb\u7edf\u53ef\u4ee5\u5c06\u8fdb\u7a0b\u5f53\u65f6\u7684\u90e8\u5206\u5185\u5b58\u72b6\u6001\u4fdd\u5b58\u5230\u78c1\u76d8\u6587\u4ef6\u4e2d\u3002<\/p>\n

                                                      \u2003\u2003\u8fd9\u4e2a\u6587\u4ef6\u901a\u5e38\u79f0\u4e3a Core \u6587\u4ef6\u3002<\/p>\n

                                                      \u5b83\u7684\u4f5c\u7528\u662f：<\/p>\n

                                                      \u2003\u2003\u4fdd\u5b58\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62\u65f6\u7684\u73b0\u573a，\u65b9\u4fbf\u5f00\u53d1\u4eba\u5458\u4e8b\u540e\u5206\u6790\u7a0b\u5e8f\u4e3a\u4ec0\u4e48\u5d29\u6e83\u3002<\/p>\n

                                                      \u4f8b\u5982：<\/p>\n

                                                      \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                      \u8fd9\u79cd\u8c03\u8bd5\u65b9\u5f0f\u53eb\u4f5c：<\/p>\n

                                                      \u2003\u2003Post-mortem Debug，\u4e5f\u5c31\u662f\u4e8b\u540e\u8c03\u8bd5\u3002<\/p>\n

                                                      10.2 \u4e3a\u4ec0\u4e48\u6709\u65f6\u5019\u6ca1\u6709 Core \u6587\u4ef6？<\/h4>\n

                                                      \u2003\u2003\u56e0\u4e3a Core \u6587\u4ef6\u53ef\u80fd\u6bd4\u8f83\u5927，\u800c\u4e14\u53ef\u80fd\u5305\u542b\u8fdb\u7a0b\u4e2d\u7684\u654f\u611f\u6570\u636e\u3002<\/p>\n

                                                      \u2003\u2003\u6240\u4ee5 Linux \u901a\u5e38\u4f1a\u901a\u8fc7\u8d44\u6e90\u9650\u5236\u63a7\u5236 Core \u6587\u4ef6\u7684\u751f\u6210\u3002<\/p>\n

                                                      \u2003\u2003\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528：<\/p>\n

                                                      ulimit<\/span> -a<\/span><\/p>\n

                                                      \u2003\u2003\u67e5\u770b\u5f53\u524d Shell \u7684\u8d44\u6e90\u9650\u5236\u3002<\/p>\n

                                                      \u2003\u2003\u5176\u4e2d：<\/p>\n

                                                      core file size (blocks, -c) 0<\/p>\n

                                                      \u2003\u2003\u8868\u793a\u5f53\u524d Core \u6587\u4ef6\u5927\u5c0f\u9650\u5236\u4e3a 0，\u4e5f\u5c31\u662f\u4e0d\u5141\u8bb8\u751f\u6210 Core \u6587\u4ef6\u3002<\/p>\n

                                                      \u2003\u2003\u5982\u679c\u5e0c\u671b\u5728\u5f00\u53d1\u8c03\u8bd5\u9636\u6bb5\u751f\u6210 Core \u6587\u4ef6，\u53ef\u4ee5\u6267\u884c：<\/p>\n

                                                      ulimit<\/span> -c<\/span> unlimited<\/p>\n

                                                      \u2003\u2003\u8868\u793a\u53d6\u6d88\u5f53\u524d Shell \u7684 Core \u6587\u4ef6\u5927\u5c0f\u9650\u5236\u3002<\/p>\n

                                                      \u2003\u2003\u7136\u540e\u518d\u8fd0\u884c\u7a0b\u5e8f：<\/p>\n

                                                      .\/test<\/p>\n

                                                      \u2003\u2003\u5f53\u7a0b\u5e8f\u56e0\u4e3a\u652f\u6301 Core Dump \u7684\u4fe1\u53f7\u5f02\u5e38\u7ec8\u6b62，\u5e76\u4e14\u5176\u4ed6\u751f\u6210\u6761\u4ef6\u6ee1\u8db3\u65f6，\u5c31\u6709\u673a\u4f1a\u751f\u6210 Core \u6587\u4ef6\u3002<\/p>\n

                                                      \u9700\u8981\u6ce8\u610f：<\/p>\n

                                                      \u2003\u2003ulimit \u4fee\u6539\u7684\u662f\u5f53\u524d Shell \u53ca\u5176\u540e\u7eed\u521b\u5efa\u7684\u5b50\u8fdb\u7a0b\u6240\u7ee7\u627f\u7684\u8d44\u6e90\u9650\u5236，\u4e0d\u4f1a\u81ea\u52a8\u5f71\u54cd\u5df2\u7ecf\u8fd0\u884c\u7684\u5176\u4ed6\u8fdb\u7a0b\u3002<\/p>\n

                                                      \u2003\u2003\u53e6\u5916，Core \u6587\u4ef6\u7684\u5b9e\u9645\u751f\u6210\u4f4d\u7f6e\u548c\u540d\u79f0\u8fd8\u53ef\u80fd\u53d7\u5230\u7cfb\u7edf\u914d\u7f6e\u5f71\u54cd\u3002<\/p>\n

                                                      10.3 \u5982\u4f55\u67e5\u770b\u5b50\u8fdb\u7a0b\u662f\u5426\u4ea7\u751f Core Dump？<\/h4>\n

                                                      \u2003\u2003\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7 waitpid() \u83b7\u53d6\u5b50\u8fdb\u7a0b\u7684\u9000\u51fa\u72b6\u6001\u3002<\/p>\n

                                                      \u4f8b\u5982：<\/p>\n

                                                      #<\/span>include<\/span> <iostream><\/span><\/span>
                                                      \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
                                                      \n#<\/span>include<\/span> <sys\/wait.h><\/span><\/span>
                                                      \n#<\/span>include<\/span> <signal.h><\/span><\/span><\/p>\n

                                                      int<\/span> main<\/span>(<\/span>)<\/span>
                                                      \n{<\/span>
                                                      \n pid_t id =<\/span> fork<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

                                                      if<\/span> (<\/span>id ==<\/span> 0<\/span>)<\/span>
                                                      \n {<\/span>
                                                      \n sleep<\/span>(<\/span>1<\/span>)<\/span>;<\/span><\/p>\n

                                                      int<\/span> a =<\/span> 10<\/span>;<\/span>
                                                      \n a \/=<\/span> 0<\/span>;<\/span><\/p>\n

                                                      return<\/span> 0<\/span>;<\/span>
                                                      \n }<\/span><\/p>\n

                                                      int<\/span> status =<\/span> 0<\/span>;<\/span><\/p>\n

                                                      waitpid<\/span>(<\/span>id,<\/span> &<\/span>status,<\/span> 0<\/span>)<\/span>;<\/span><\/p>\n

                                                      if<\/span> (<\/span>WIFSIGNALED<\/span>(<\/span>status)<\/span>)<\/span>
                                                      \n {<\/span>
                                                      \n std::<\/span>cout <<<\/span> "exit signal: "<\/span>
                                                      \n <<<\/span> WTERMSIG<\/span>(<\/span>status)<\/span> <<<\/span> std::<\/span>endl;<\/span><\/p>\n

                                                      std::<\/span>cout <<<\/span> "core dump: "<\/span>
                                                      \n <<<\/span> WCOREDUMP<\/span>(<\/span>status)<\/span> <<<\/span> std::<\/span>endl;<\/span>
                                                      \n }<\/span><\/p>\n

                                                      return<\/span> 0<\/span>;<\/span>
                                                      \n}<\/span><\/p>\n

                                                      \u2003\u2003\u8fd9\u91cc\u6709\u51e0\u4e2a\u503c\u5f97\u8ba4\u8bc6\u7684\u5b8f：<\/p>\n\n\u5b8f\u4f5c\u7528<\/tr>\n\n\n\n\n\n\n
                                                      WIFEXITED(status)<\/td>\n\u5224\u65ad\u5b50\u8fdb\u7a0b\u662f\u5426\u6b63\u5e38\u9000\u51fa<\/td>\n<\/tr>\n
                                                      WEXITSTATUS(status)<\/td>\n\u83b7\u53d6\u6b63\u5e38\u9000\u51fa\u65f6\u7684\u9000\u51fa\u7801<\/td>\n<\/tr>\n
                                                      WIFSIGNALED(status)<\/td>\n\u5224\u65ad\u5b50\u8fdb\u7a0b\u662f\u5426\u88ab\u4fe1\u53f7\u7ec8\u6b62<\/td>\n<\/tr>\n
                                                      WTERMSIG(status)<\/td>\n\u83b7\u53d6\u7ec8\u6b62\u5b50\u8fdb\u7a0b\u7684\u4fe1\u53f7\u7f16\u53f7<\/td>\n<\/tr>\n
                                                      WCOREDUMP(status)<\/td>\n\u5224\u65ad\u662f\u5426\u4ea7\u751f\u4e86 Core Dump<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                                      \u4f8b\u5982：<\/p>\n

                                                      exit signal: 8
                                                      \ncore dump: 1<\/p>\n

                                                      \u2003\u2003\u8868\u793a\u5b50\u8fdb\u7a0b\u56e0\u4e3a SIGFPE（8）\u5f02\u5e38\u7ec8\u6b62，\u5e76\u4e14\u4ea7\u751f\u4e86 Core Dump\u3002<\/p>\n

                                                      \n

                                                      \u5341\u4e00\u3001\u603b\u7ed3<\/h3>\n

                                                      \u2003\u2003\u5230\u8fd9\u91cc，\u6211\u4eec\u5df2\u7ecf\u5b66\u4e60\u4e86 Linux \u4fe1\u53f7\u7684\u4e94\u79cd\u4ea7\u751f\u65b9\u5f0f\u3002<\/p>\n

                                                      \u2003\u2003\u53ef\u4ee5\u5c06\u5b83\u4eec\u7edf\u4e00\u6574\u7406\u6210\u4e0b\u9762\u8fd9\u5f20\u56fe：<\/p>\n

                                                      #mermaid-svg-VkostN5TsB5jPUPw{font-family:\\”trebuchet ms\\”,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes dash{to{stroke-dashoffset:0;}}#mermaid-svg-VkostN5TsB5jPUPw .edge-animation-slow{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 50s linear infinite;stroke-linecap:round;}#mermaid-svg-VkostN5TsB5jPUPw .edge-animation-fast{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 20s linear infinite;stroke-linecap:round;}#mermaid-svg-VkostN5TsB5jPUPw .error-icon{fill:#552222;}#mermaid-svg-VkostN5TsB5jPUPw .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-VkostN5TsB5jPUPw .edge-thickness-normal{stroke-width:1px;}#mermaid-svg-VkostN5TsB5jPUPw .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-VkostN5TsB5jPUPw .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-VkostN5TsB5jPUPw .edge-thickness-invisible{stroke-width:0;fill:none;}#mermaid-svg-VkostN5TsB5jPUPw .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-VkostN5TsB5jPUPw .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-VkostN5TsB5jPUPw .marker{fill:#333333;stroke:#333333;}#mermaid-svg-VkostN5TsB5jPUPw .marker.cross{stroke:#333333;}#mermaid-svg-VkostN5TsB5jPUPw svg{font-family:\\”trebuchet ms\\”,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-VkostN5TsB5jPUPw p{margin:0;}#mermaid-svg-VkostN5TsB5jPUPw .label{font-family:\\”trebuchet ms\\”,verdana,arial,sans-serif;color:#333;}#mermaid-svg-VkostN5TsB5jPUPw .cluster-label text{fill:#333;}#mermaid-svg-VkostN5TsB5jPUPw .cluster-label span{color:#333;}#mermaid-svg-VkostN5TsB5jPUPw .cluster-label span p{background-color:transparent;}#mermaid-svg-VkostN5TsB5jPUPw .label text,#mermaid-svg-VkostN5TsB5jPUPw span{fill:#333;color:#333;}#mermaid-svg-VkostN5TsB5jPUPw .node rect,#mermaid-svg-VkostN5TsB5jPUPw .node circle,#mermaid-svg-VkostN5TsB5jPUPw .node ellipse,#mermaid-svg-VkostN5TsB5jPUPw .node polygon,#mermaid-svg-VkostN5TsB5jPUPw .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-VkostN5TsB5jPUPw .rough-node .label text,#mermaid-svg-VkostN5TsB5jPUPw .node .label text,#mermaid-svg-VkostN5TsB5jPUPw .image-shape .label,#mermaid-svg-VkostN5TsB5jPUPw .icon-shape .label{text-anchor:middle;}#mermaid-svg-VkostN5TsB5jPUPw .node .katex path{fill:#000;stroke:#000;stroke-width:1px;}#mermaid-svg-VkostN5TsB5jPUPw .rough-node .label,#mermaid-svg-VkostN5TsB5jPUPw .node .label,#mermaid-svg-VkostN5TsB5jPUPw .image-shape .label,#mermaid-svg-VkostN5TsB5jPUPw .icon-shape .label{text-align:center;}#mermaid-svg-VkostN5TsB5jPUPw .node.clickable{cursor:pointer;}#mermaid-svg-VkostN5TsB5jPUPw .root .anchor path{fill:#333333!important;stroke-width:0;stroke:#333333;}#mermaid-svg-VkostN5TsB5jPUPw .arrowheadPath{fill:#333333;}#mermaid-svg-VkostN5TsB5jPUPw .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-VkostN5TsB5jPUPw .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-VkostN5TsB5jPUPw .edgeLabel{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-VkostN5TsB5jPUPw .edgeLabel p{background-color:rgba(232,232,232, 0.8);}#mermaid-svg-VkostN5TsB5jPUPw .edgeLabel rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-VkostN5TsB5jPUPw .labelBkg{background-color:rgba(232, 232, 232, 0.5);}#mermaid-svg-VkostN5TsB5jPUPw .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-VkostN5TsB5jPUPw .cluster text{fill:#333;}#mermaid-svg-VkostN5TsB5jPUPw .cluster span{color:#333;}#mermaid-svg-VkostN5TsB5jPUPw div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\\”trebuchet ms\\”,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-VkostN5TsB5jPUPw .flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-VkostN5TsB5jPUPw rect.text{fill:none;stroke-width:0;}#mermaid-svg-VkostN5TsB5jPUPw .icon-shape,#mermaid-svg-VkostN5TsB5jPUPw .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-VkostN5TsB5jPUPw .icon-shape p,#mermaid-svg-VkostN5TsB5jPUPw .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-VkostN5TsB5jPUPw .icon-shape .label rect,#mermaid-svg-VkostN5TsB5jPUPw .image-shape .label rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-VkostN5TsB5jPUPw .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-VkostN5TsB5jPUPw .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-VkostN5TsB5jPUPw :root{–mermaid-font-family:\\”trebuchet ms\\”,verdana,arial,sans-serif;}#mermaid-svg-VkostN5TsB5jPUPw .startNode>*{fill:#F2F4F7!important;stroke:#9CA3AF!important;stroke-width:2px!important;color:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .startNode span{fill:#F2F4F7!important;stroke:#9CA3AF!important;stroke-width:2px!important;color:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .startNode tspan{fill:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .sourceNode>*{fill:#E0F2FE!important;stroke:#7DD3FC!important;stroke-width:1px!important;color:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .sourceNode span{fill:#E0F2FE!important;stroke:#7DD3FC!important;stroke-width:1px!important;color:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .sourceNode tspan{fill:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .detailNode>*{fill:#DCFCE7!important;stroke:#86EFAC!important;stroke-width:1px!important;color:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .detailNode span{fill:#DCFCE7!important;stroke:#86EFAC!important;stroke-width:1px!important;color:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .detailNode tspan{fill:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .osNode>*{fill:#F3E8FF!important;stroke:#D8B4FE!important;stroke-width:2px!important;color:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .osNode span{fill:#F3E8FF!important;stroke:#D8B4FE!important;stroke-width:2px!important;color:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .osNode tspan{fill:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .pendingNode>*{fill:#FFE4E6!important;stroke:#FDA4AF!important;stroke-width:1px!important;color:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .pendingNode span{fill:#FFE4E6!important;stroke:#FDA4AF!important;stroke-width:1px!important;color:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .pendingNode tspan{fill:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .handleNode>*{fill:#ECFCCB!important;stroke:#BEF264!important;stroke-width:2px!important;color:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .handleNode span{fill:#ECFCCB!important;stroke:#BEF264!important;stroke-width:2px!important;color:#333!important;}#mermaid-svg-VkostN5TsB5jPUPw .handleNode tspan{fill:#333!important;}<\/p>\n

                                                      <\/span><\/p>\n

                                                      <\/span><\/p>\n

                                                      <\/span><\/p>\n

                                                      <\/span><\/p>\n

                                                      <\/span><\/p>\n

                                                      <\/span><\/p>\n

                                                      <\/span><\/p>\n

                                                      <\/span><\/p>\n

                                                      <\/span><\/p>\n

                                                      <\/span><\/p>\n

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                                                      \u8f6f\u4ef6\u6761\u4ef6<\/p>\n

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                                                      Ctrl+C \/ Ctrl+\\\\ \/ Ctrl+Z<\/p>\n

                                                      <\/span><\/p>\n

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                                                      kill() \/ raise() \/ abort()<\/p>\n

                                                      <\/span><\/p>\n

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                                                      alarm() \/ SIGPIPE<\/p>\n

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                                                      \u64cd\u4f5c\u7cfb\u7edf\u5904\u7406<\/p>\n

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                                                      \u4fdd\u5b58\u4fe1\u53f7 Pending<\/p>\n

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                                                      \u9009\u62e9\u5408\u9002\u7684\u65f6\u673a<\/p>\n

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                                                      \u6267\u884c\u4fe1\u53f7\u5904\u7406<\/p>\n

                                                      <\/span><\/p>\n

                                                      \n

                                                      \u7ed3\u8bed：<\/h3>\n

                                                      \u2003\u2003\u4eca\u5929\u7684\u5185\u5bb9\u5230\u8fd9\u91cc\u5c31\u7ed3\u675f\u4e86，\u5e0c\u671b\u4f60\u80fd\u6709\u6240\u6536\u83b7~<\/p>\n

                                                      \u5e72\u8d27\u6574\u7406\u5230\u624b\u6296，\u89c9\u5f97\u6709\u7528\u7684\u8bdd，\u8d4f\u4e2a\u4e09\u8fde\u56de\u56de\u8840？<\/font>__(:\u15e4\u300d\u3125)_ _<\/p>\n","protected":false},"excerpt":{"rendered":"

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