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<\/h2>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728 Linux \u7cfb\u7edf\u4e2d，\u4fe1\u53f7\u662f\u8fdb\u7a0b\u95f4\u5f02\u6b65\u901a\u4fe1\u7684 \u201c\u4fe1\u4f7f\u201d，\u800c \u201c\u4fe1\u53f7\u4ea7\u751f\u201d \u5219\u662f\u8fd9\u4e2a\u901a\u4fe1\u8fc7\u7a0b\u7684\u8d77\u70b9\u3002\u65e0\u8bba\u662f\u6211\u4eec\u719f\u6089\u7684Ctrl+C\u7ec8\u6b62\u8fdb\u7a0b，\u8fd8\u662f\u7a0b\u5e8f\u8fd0\u884c\u4e2d\u51fa\u73b0\u7684\u6bb5\u9519\u8bef\u3001\u5b9a\u65f6\u5668\u8d85\u65f6，\u672c\u8d28\u4e0a\u90fd\u662f\u4fe1\u53f7\u88ab\u89e6\u53d1\u4ea7\u751f\u7684\u8fc7\u7a0b\u3002\u5f88\u591a\u5f00\u53d1\u8005\u53ea\u77e5\u9053 \u201c\u4fe1\u53f7\u80fd\u7ec8\u6b62\u8fdb\u7a0b\u201d，\u5374\u4e0d\u6e05\u695a\u4fe1\u53f7\u5230\u5e95\u662f\u600e\u4e48\u6765\u7684 \u2014\u2014 \u662f\u7528\u6237\u64cd\u4f5c\u89e6\u53d1\u7684？\u8fd8\u662f\u7cfb\u7edf\u81ea\u52a8\u4ea7\u751f\u7684？\u4e0d\u540c\u573a\u666f\u4e0b\u4fe1\u53f7\u7684\u4ea7\u751f\u673a\u5236\u6709\u4f55\u4e0d\u540c？<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u672c\u6587\u5c06\u57fa\u4e8e Linux \u5185\u6838\u539f\u7406，\u7ed3\u5408 5 \u79cd\u6838\u5fc3\u4fe1\u53f7\u4ea7\u751f\u573a\u666f（\u7ec8\u7aef\u6309\u952e\u3001\u7cfb\u7edf\u547d\u4ee4\u3001\u51fd\u6570\u8c03\u7528\u3001\u8f6f\u4ef6\u6761\u4ef6\u3001\u786c\u4ef6\u5f02\u5e38），\u7528\u901a\u4fd7\u7684\u8bed\u8a00，\u5e26\u4f60\u5168\u65b9\u4f4d\u63ed\u79d8\u4fe1\u53f7\u4ea7\u751f\u7684\u5e95\u5c42\u903b\u8f91，\u8ba9\u4f60\u4e0d\u4ec5 \u201c\u77e5\u5176\u7136\u201d，\u66f4 \u201c\u77e5\u5176\u6240\u4ee5\u7136\u201d\u3002\u4e0b\u9762\u5c31\u8ba9\u6211\u4eec\u6b63\u5f0f\u5f00\u59cb\u5427！<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260226024952-699fb4d02f004.png\")
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![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260226024952-699fb4d059ba8.png\")
<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728\u6df1\u5165\u5177\u4f53\u573a\u666f\u4e4b\u524d，\u6211\u4eec\u5148\u660e\u786e\u4e00\u4e2a\u6838\u5fc3\u95ee\u9898：\u4fe1\u53f7\u662f\u7531\u8c01\u4ea7\u751f\u5e76\u53d1\u9001\u7684？\u7b54\u6848\u662f\u64cd\u4f5c\u7cfb\u7edf（OS）\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u65e0\u8bba\u4fe1\u53f7\u7684\u89e6\u53d1\u6e90\u5934\u662f\u7528\u6237\u6309\u952e\u3001\u51fd\u6570\u8c03\u7528\u8fd8\u662f\u786c\u4ef6\u5f02\u5e38，\u6700\u7ec8\u90fd\u5fc5\u987b\u7ecf\u8fc7 OS \u7684 \u201c\u4e2d\u8f6c\u201d\u2014\u2014OS \u4f1a\u5c06\u8fd9\u4e9b\u89e6\u53d1\u4e8b\u4ef6\u89e3\u91ca\u4e3a\u5bf9\u5e94\u7684\u4fe1\u53f7，\u518d\u53d1\u9001\u7ed9\u76ee\u6807\u8fdb\u7a0b\u3002\u8fd9\u662f\u56e0\u4e3a OS \u662f\u8fdb\u7a0b\u7684 \u201c\u7ba1\u7406\u8005\u201d，\u53ea\u6709 OS \u62e5\u6709\u64cd\u4f5c\u8fdb\u7a0b PCB（\u8fdb\u7a0b\u63a7\u5236\u5757）\u7684\u6743\u9650，\u80fd\u591f\u4fee\u6539\u8fdb\u7a0b\u7684\u672a\u51b3\u4fe1\u53f7\u96c6，\u5b8c\u6210\u4fe1\u53f7\u7684 \u201c\u6295\u9012\u201d\u3002<\/p>\n
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\u89e6\u53d1\u4e8b\u4ef6（\u7528\u6237\/\u51fd\u6570\/\u786c\u4ef6\u7b49）\u2192 OS\u8bc6\u522b\u4e8b\u4ef6 \u2192 OS\u5c06\u4e8b\u4ef6\u6620\u5c04\u4e3a\u5bf9\u5e94\u4fe1\u53f7 \u2192 OS\u4fee\u6539\u76ee\u6807\u8fdb\u7a0bPCB\u7684\u672a\u51b3\u4fe1\u53f7\u96c6 \u2192 \u4fe1\u53f7\u4ea7\u751f\u5e76\u7b49\u5f85\u9012\u8fbe<\/p>\n
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\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef（Terminal）\u662f\u7528\u6237\u4e0e Linux \u7cfb\u7edf\u4ea4\u4e92\u7684\u4e3b\u8981\u754c\u9762，\u6211\u4eec\u65e5\u5e38\u4f7f\u7528\u7684Ctrl+C\u3001Ctrl+\\\\\u3001Ctrl+Z\u7b49\u7ec4\u5408\u952e，\u672c\u8d28\u4e0a\u90fd\u662f\u901a\u8fc7\u7ec8\u7aef\u89e6\u53d1\u4fe1\u53f7\u4ea7\u751f\u7684\u3002\u8fd9\u79cd\u65b9\u5f0f\u6700\u76f4\u89c2，\u4e5f\u662f\u6211\u4eec\u63a5\u89e6\u6700\u591a\u7684\u4fe1\u53f7\u4ea7\u751f\u573a\u666f\u3002<\/p>\n
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![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260226024952-699fb4d08af29.png\")
<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u91cc\u6709\u4e00\u4e2a\u5173\u952e\u89c4\u5219：\u7ec8\u7aef\u7ec4\u5408\u952e\u4ea7\u751f\u7684\u4fe1\u53f7，\u53ea\u80fd\u53d1\u9001\u7ed9\u5f53\u524d\u524d\u53f0\u8fdb\u7a0b\u3002\u540e\u53f0\u8fdb\u7a0b（\u901a\u8fc7&\u542f\u52a8\u7684\u8fdb\u7a0b）\u65e0\u6cd5\u63a5\u6536\u7ec8\u7aef\u7ec4\u5408\u952e\u4ea7\u751f\u7684\u4fe1\u53f7，\u8fd9\u662f\u4e3a\u4e86\u907f\u514d\u540e\u53f0\u8fdb\u7a0b\u88ab\u7528\u6237\u8bef\u64cd\u4f5c\u4e2d\u65ad\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Linux \u7ec8\u7aef\u4e2d\u6700\u5e38\u7528\u7684\u4e09\u4e2a\u7ec4\u5408\u952e\u5bf9\u5e94\u7684\u4fe1\u53f7\u5206\u522b\u662f：Ctrl+C（SIGINT）<\/span>\u3001Ctrl+\\\\（SIGQUIT）<\/span>\u3001Ctrl+Z（SIGTSTP）<\/span>，\u6211\u4eec\u901a\u8fc7\u5b9e\u6218\u4ee3\u7801\u9010\u4e00\u9a8c\u8bc1\u5b83\u4eec\u7684\u4ea7\u751f\u4e0e\u4f5c\u7528\u3002<\/p>\n \u00a0 \u00a0 SIGINT<\/span>\u4fe1\u53f7\u7684\u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c\u662f \u201c\u7ec8\u6b62\u8fdb\u7a0b\u201d，\u8fd9\u662f\u6211\u4eec\u6700\u5e38\u7528\u7684 \u201c\u5f3a\u5236\u7ec8\u6b62\u8fdb\u7a0b\u201d \u7684\u65b9\u5f0f\u3002<\/p>\n \/\/ sig_int_default.cpp int main() g++ sig_int_default.cpp -o sig_int_default \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd0\u884c\u540e，\u7ec8\u7aef\u4f1a\u6301\u7eed\u6253\u5370 \u201c\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…\u201d，\u6b64\u65f6\u6309\u4e0bCtrl+C，\u8fdb\u7a0b\u4f1a\u7acb\u5373\u7ec8\u6b62，\u7ec8\u7aef\u8f93\u51fa\u5982\u4e0b：<\/p>\n \u8fdb\u7a0bPID：12345，\u6b63\u5728\u8fd0\u884c…（\u6309\u4e0bCtrl+C\u7ec8\u6b62） \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7signal<\/span>\u51fd\u6570\u81ea\u5b9a\u4e49SIGINT<\/span>\u4fe1\u53f7\u7684\u5904\u7406\u52a8\u4f5c，\u8ba9\u6309\u4e0bCtrl+C\u540e\u8fdb\u7a0b\u4e0d\u7ec8\u6b62，\u800c\u662f\u6267\u884c\u6211\u4eec\u5b9a\u4e49\u7684\u903b\u8f91\u3002<\/p>\n \/\/ sig_int_catch.cpp \/\/ \u81ea\u5b9a\u4e49\u4fe1\u53f7\u5904\u7406\u51fd\u6570 int main() while (true) g++ sig_int_catch.cpp -o sig_int_catch \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd0\u884c\u540e\u6309\u4e0bCtrl+C，\u8fdb\u7a0b\u4e0d\u4f1a\u7ec8\u6b62，\u800c\u662f\u6253\u5370\u81ea\u5b9a\u4e49\u4fe1\u606f：<\/p>\n \u8fdb\u7a0bPID：12346，\u6b63\u5728\u8fd0\u884c…（\u6309\u4e0bCtrl+C\u6d4b\u8bd5） \u00a0 \u00a0 SIGQUIT<\/span>\u4fe1\u53f7\u7684\u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c\u662f \u201c\u7ec8\u6b62\u8fdb\u7a0b\u5e76\u751f\u6210 Core Dump \u6587\u4ef6\u201d\u3002Core Dump \u6587\u4ef6\u662f\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62\u65f6\u7684\u5185\u5b58\u955c\u50cf\u6587\u4ef6，\u5305\u542b\u8fdb\u7a0b\u7ec8\u6b62\u65f6\u7684\u5185\u5b58\u6570\u636e\u3001\u5bc4\u5b58\u5668\u72b6\u6001\u7b49\u4fe1\u606f，\u7528\u4e8e\u4e8b\u540e\u8c03\u8bd5（Post-mortem Debug）\u3002<\/p>\n \/\/ sig_quit_core.cpp int main() # \u5f00\u542fCore Dump\u529f\u80fd（\u4e34\u65f6\u751f\u6548） \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd0\u884c\u540e\u6309\u4e0bCtrl+\\\\<\/span><\/span>，\u8fdb\u7a0b\u7ec8\u6b62\u5e76\u751f\u6210 Core \u6587\u4ef6：<\/p>\n \u8fdb\u7a0bPID：12347，\u6b63\u5728\u8fd0\u884c…（\u6309\u4e0bCtrl+\\\\\u751f\u6210Core\u6587\u4ef6） \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u4f1a\u663e\u793a\u7c7b\u4f3ccore.12347\u7684\u6587\u4ef6，\u4f7f\u7528 gdb \u8c03\u8bd5：<\/p>\n gdb sig_quit_core core.12347<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8c03\u8bd5\u8f93\u51fa\u4f1a\u663e\u793a\u8fdb\u7a0b\u7ec8\u6b62\u7684\u539f\u56e0（\u6536\u5230 SIGQUIT \u4fe1\u53f7），\u9a8c\u8bc1\u4e86\u4fe1\u53f7\u7684\u4ea7\u751f\u4e0e\u4f5c\u7528\u3002<\/p>\n \u00a0 \u00a0 SIGTSTP<\/span>\u4fe1\u53f7\u7684\u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c\u662f \u201c\u6682\u505c\u524d\u53f0\u8fdb\u7a0b\u201d，\u5c06\u8fdb\u7a0b\u4ece \u201c\u8fd0\u884c\u6001\u201d \u5207\u6362\u4e3a \u201c\u505c\u6b62\u6001（Stopped）\u201d，\u5e76\u5c06\u5176\u8f6c\u5165\u540e\u53f0\u3002\u6682\u505c\u7684\u8fdb\u7a0b\u53ef\u4ee5\u901a\u8fc7fg\u547d\u4ee4\u6062\u590d\u5230\u524d\u53f0，\u6216\u901a\u8fc7bg\u547d\u4ee4\u8ba9\u5176\u5728\u540e\u53f0\u7ee7\u7eed\u8fd0\u884c\u3002<\/p>\n \/\/ sig_tstp_stop.cpp int main() g++ sig_tstp_stop.cpp -o sig_tstp_stop \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd0\u884c\u540e\u6309\u4e0bCtrl+Z<\/span><\/span>，\u8fdb\u7a0b\u88ab\u6682\u505c\u5e76\u8f6c\u5165\u540e\u53f0：<\/p>\n \u8fdb\u7a0bPID：12348，\u6b63\u5728\u8fd0\u884c…（\u6309\u4e0bCtrl+Z\u6682\u505c） \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u540e\u7eed\u64cd\u4f5c\u547d\u4ee4：<\/p>\n # \u67e5\u770b\u540e\u53f0\u6682\u505c\u7684\u8fdb\u7a0b \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5173\u952e\u89c4\u5219：\u7ec8\u7aef\u4fe1\u53f7\u4ec5\u53d1\u9001\u7ed9\u524d\u53f0\u8fdb\u7a0b，\u540e\u53f0\u8fdb\u7a0b（&\u542f\u52a8）\u4e0d\u53d7\u7ec8\u7aef\u7ec4\u5408\u952e\u5f71\u54cd\u3002<\/p>\n<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u9664\u4e86\u7ec8\u7aef\u7ec4\u5408\u952e，\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7 Linux \u7cfb\u7edf\u63d0\u4f9b\u7684\u547d\u4ee4\u4e3b\u52a8\u5411\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7，\u6700\u5e38\u7528\u7684\u547d\u4ee4\u662fkill<\/span>\u548cpkill<\/span>\u3002\u8fd9\u79cd\u65b9\u5f0f\u7684\u6838\u5fc3\u662f：\u901a\u8fc7\u547d\u4ee4\u544a\u77e5 OS \u201c\u5411\u6307\u5b9a\u8fdb\u7a0b\u53d1\u9001\u67d0\u4e2a\u4fe1\u53f7\u201d，\u7531 OS \u5b8c\u6210\u4fe1\u53f7\u7684\u4ea7\u751f\u4e0e\u6295\u9012\u3002<\/p>\n \u00a0 \u00a0 kill<\/span>\u547d\u4ee4\u7684\u672c\u8d28\u662f\u8c03\u7528\u7cfb\u7edf\u8c03\u7528kill()<\/span><\/span>\u51fd\u6570，\u5411\u6307\u5b9a\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7\u3002\u5176\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b：<\/p>\n # \u683c\u5f0f1：\u901a\u8fc7\u4fe1\u53f7\u540d\u79f0\u53d1\u9001 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5e38\u7528\u4fe1\u53f7\u4e0e kill \u547d\u4ee4\u7ec4\u5408：<\/p>\n \/\/ sig_backend.cpp int main() # \u7f16\u8bd1 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u8f93\u51fa\u7c7b\u4f3c\u5982\u4e0b（PID \u4e3a 12349）：<\/p>\n user 12349 0.0 0.0 4384 820 pts\/0 S 10:00 0:00 .\/sig_backend<\/p>\n kill -SIGINT 12349 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7531\u4e8e\u540e\u53f0\u8fdb\u7a0b\u9ed8\u8ba4\u4e0d\u4f1a\u5904\u7406 SIGINT <\/span>\u4fe1\u53f7（\u9664\u975e\u81ea\u5b9a\u4e49），\u8fdb\u7a0b\u4f1a\u7ee7\u7eed\u8fd0\u884c，\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7jobs\u547d\u4ee4\u67e5\u770b：<\/p>\n jobs<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8f93\u51fa\u663e\u793a\u8fdb\u7a0b\u4ecd\u5728\u8fd0\u884c：<\/p>\n [1]+ Running .\/sig_backend &<\/p>\n kill -SIGKILL 12349 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u518d\u6b21\u67e5\u770b\u8fdb\u7a0b，\u53d1\u73b0\u8fdb\u7a0b\u5df2\u88ab\u7ec8\u6b62：<\/p>\n ps aux | grep sig_backend \u00a0 \u00a0 SIGSEGV <\/span>\u4fe1\u53f7\u7684\u9ed8\u8ba4\u52a8\u4f5c\u662f \u201c\u7ec8\u6b62\u8fdb\u7a0b\u5e76\u751f\u6210 Core Dump\u201d，\u901a\u5e38\u7531\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee\u89e6\u53d1，\u4f46\u6211\u4eec\u4e5f\u53ef\u4ee5\u901a\u8fc7 kill \u547d\u4ee4\u4e3b\u52a8\u53d1\u9001：<\/p>\n # \u5148\u5f00\u542fCore Dump\u529f\u80fd \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u8f93\u51fa\u5982\u4e0b，\u8fdb\u7a0b\u88ab\u7ec8\u6b62\u5e76\u751f\u6210 Core \u6587\u4ef6：<\/p>\n [1]+ Segmentation fault (core dumped) .\/sig_backend<\/p>\n \u00a0 \u00a0 pkill<\/span>\u547d\u4ee4\u53ef\u4ee5\u6839\u636e\u8fdb\u7a0b\u540d\u53d1\u9001\u4fe1\u53f7，\u65e0\u9700\u624b\u52a8\u67e5\u8be2 PID，\u66f4\u65b9\u4fbf\u5feb\u6377：<\/p>\n # \u7ec8\u6b62\u6240\u6709\u540d\u4e3asig_backend\u7684\u8fdb\u7a0b \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u9664\u4e86\u901a\u8fc7\u7ec8\u7aef\u548c\u547d\u4ee4，\u6211\u4eec\u8fd8\u53ef\u4ee5\u5728 C\/C++ \u4ee3\u7801\u4e2d\u8c03\u7528\u7279\u5b9a\u51fd\u6570，\u4e3b\u52a8\u4ea7\u751f\u4fe1\u53f7\u5e76\u53d1\u9001\u7ed9\u8fdb\u7a0b\u3002Linux \u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e09\u4e2a\u6838\u5fc3\u51fd\u6570：kill()<\/span>\u3001<\/span>raise()<\/span>\u3001<\/span>abort()<\/span><\/span>，\u5206\u522b\u7528\u4e8e \u201c\u5411\u6307\u5b9a\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7\u201d\u3001\u201c\u5411\u5f53\u524d\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7\u201d\u3001\u201c\u5f3a\u5236\u5f53\u524d\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62\u201d\u3002<\/p>\n \u00a0 \u00a0 kill()<\/span><\/span>\u51fd\u6570\u662fkill<\/span>\u547d\u4ee4\u7684\u5e95\u5c42\u5b9e\u73b0，\u5141\u8bb8\u8fdb\u7a0b\u5411\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7，\u5176\u51fd\u6570\u539f\u578b\u5982\u4e0b：<\/p>\n #include <sys\/types.h> int kill(pid_t pid, int sig);<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6211\u4eec\u53ef\u4ee5\u7528kill()<\/span><\/span>\u51fd\u6570\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u81ea\u5b9a\u4e49 kill \u547d\u4ee4，\u652f\u6301\u901a\u8fc7 \u201c- \u4fe1\u53f7\u7f16\u53f7 \u8fdb\u7a0b PID\u201d \u7684\u683c\u5f0f\u53d1\u9001\u4fe1\u53f7：<\/p>\n \/\/ mykill.cpp int main(int argc, char *argv[]) \/\/ \u89e3\u6790\u4fe1\u53f7\u7f16\u53f7（\u53bb\u6389argv[1]\u7684 '-' \u524d\u7f00） \/\/ \u8c03\u7528kill()\u51fd\u6570\u53d1\u9001\u4fe1\u53f7 return 0; # \u7f16\u8bd1 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u8f93\u51fa\u5982\u4e0b，\u9a8c\u8bc1\u4e86kill()<\/span><\/span>\u51fd\u6570\u7684\u529f\u80fd：<\/p>\n \u6210\u529f\u5411\u8fdb\u7a0bPID=12351\u53d1\u9001\u4fe1\u53f7：2 \u00a0 \u00a0 raise()<\/span><\/span>\u51fd\u6570\u7528\u4e8e\u5411\u5f53\u524d\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7，\u7b49\u4ef7\u4e8ekill(getpid(), sig)<\/span><\/span>，\u51fd\u6570\u539f\u578b\u5982\u4e0b：<\/p>\n #include <signal.h><\/p>\n int raise(int sig);<\/p>\n \/\/ sig_raise.cpp \/\/ \u81ea\u5b9a\u4e49\u4fe1\u53f7\u5904\u7406\u51fd\u6570 int main() \/\/ \u6bcf\u96941\u79d2，\u5411\u5f53\u524d\u8fdb\u7a0b\u53d1\u9001SIGINT\u4fe1\u53f7 return 0; g++ sig_raise.cpp -o sig_raise \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u8f93\u51fa\u5982\u4e0b，\u8fdb\u7a0b\u6bcf\u9694 1 \u79d2\u6355\u83b7\u5230\u4e00\u6b21 SIGINT \u4fe1\u53f7：<\/p>\n \u8fdb\u7a0bPID：12352，\u5f00\u59cb\u8fd0\u884c… \u00a0 \u00a0 abort()<\/span><\/span>\u51fd\u6570\u7528\u4e8e\u5f3a\u5236\u5f53\u524d\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62，\u5176\u672c\u8d28\u662f\u5411\u5f53\u524d\u8fdb\u7a0b\u53d1\u9001SIGABRT<\/span>\u4fe1\u53f7（6 \u53f7），\u51fd\u6570\u539f\u578b\u5982\u4e0b：<\/p>\n #include <stdlib.h><\/p>\n void abort(void);<\/p>\n \/\/ sig_abort.cpp \/\/ \u81ea\u5b9a\u4e49SIGABRT\u4fe1\u53f7\u5904\u7406\u51fd\u6570 int main() cout << "3\u79d2\u540e\u8c03\u7528abort()\u51fd\u6570…" << endl; \/\/ \u8c03\u7528abort()\u51fd\u6570，\u5f3a\u5236\u7ec8\u6b62\u8fdb\u7a0b \/\/ \u4ee5\u4e0b\u4ee3\u7801\u6c38\u8fdc\u4e0d\u4f1a\u6267\u884c g++ sig_abort.cpp -o sig_abort \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u8f93\u51fa\u5982\u4e0b，\u9a8c\u8bc1\u4e86abort()<\/span><\/span>\u51fd\u6570\u7684\u5f3a\u5236\u7ec8\u6b62\u7279\u6027：<\/p>\n \u8fdb\u7a0bPID：12353，\u5f00\u59cb\u8fd0\u884c… \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8f6f\u4ef6\u6761\u4ef6\u89e6\u53d1\u662f\u6307：\u4fe1\u53f7\u7684\u4ea7\u751f\u6e90\u4e8e\u7a0b\u5e8f\u7684\u8fd0\u884c\u72b6\u6001\u6216\u8f6f\u4ef6\u903b\u8f91，\u800c\u975e\u7528\u6237\u64cd\u4f5c\u6216\u786c\u4ef6\u5f02\u5e38\u3002<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6700\u5178\u578b\u7684\u4f8b\u5b50\u662falarm()<\/span><\/span>\u51fd\u6570\u8bbe\u7f6e\u7684\u5b9a\u65f6\u5668\u8d85\u65f6（\u89e6\u53d1SIGALRM\u4fe1\u53f7），\u4ee5\u53ca\u5411\u5df2\u5173\u95ed\u7684\u7ba1\u9053\u5199\u6570\u636e（\u89e6\u53d1SIGPIPE\u4fe1\u53f7）\u3002<\/p>\n \u00a0 \u00a0 alarm()<\/span><\/span>\u51fd\u6570\u7528\u4e8e\u8bbe\u7f6e\u4e00\u4e2a\u5b9a\u65f6\u5668，\u5f53\u5b9a\u65f6\u5668\u8d85\u65f6\u540e，OS \u4f1a\u5411\u5f53\u524d\u8fdb\u7a0b\u53d1\u9001SIGALRM<\/span>\u4fe1\u53f7（14 \u53f7），\u5176\u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c\u662f \u201c\u7ec8\u6b62\u8fdb\u7a0b\u201d\u3002\u51fd\u6570\u539f\u578b\u5982\u4e0b：<\/p>\n #include <unistd.h><\/p>\n unsigned int alarm(unsigned int seconds);<\/p>\n \u00a0 \u00a0 alarm()<\/span><\/span>\u51fd\u6570\u5c31\u50cf\u4e00\u4e2a \u201c\u95f9\u949f\u201d：\u4f60\u8bbe\u5b9a\u4e00\u4e2a\u65f6\u95f4（seconds），\u65f6\u95f4\u5230\u540e\u95f9\u949f\u54cd\u8d77（OS \u53d1\u9001 SIGALRM \u4fe1\u53f7）\u3002\u5982\u679c\u5728\u95f9\u949f\u54cd\u4e4b\u524d\u4f60\u91cd\u65b0\u8bbe\u5b9a\u4e86\u4e00\u4e2a\u65b0\u65f6\u95f4，\u90a3\u4e48\u65e7\u7684\u95f9\u949f\u4f1a\u88ab\u53d6\u6d88，\u8fd4\u56de\u503c\u662f\u65e7\u95f9\u949f\u5269\u4f59\u7684\u65f6\u95f4\u3002<\/p>\n \/\/ sig_alarm_basic.cpp int main() \/\/ \u6b7b\u5faa\u73af，\u7b49\u5f85\u4fe1\u53f7\u89e6\u53d1 return 0; g++ sig_alarm_basic.cpp -o sig_alarm_basic \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a01 \u79d2\u540e，\u8fdb\u7a0b\u88ab SIGALRM <\/span>\u4fe1\u53f7\u7ec8\u6b62，\u7ec8\u7aef\u8f93\u51fa：<\/p>\n \u8fdb\u7a0bPID：12354，\u8bbe\u7f6e1\u79d2\u540e\u89e6\u53d1\u95f9\u949f… \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6211\u4eec\u53ef\u4ee5\u81ea\u5b9a\u4e49 SIGALRM <\/span>\u4fe1\u53f7\u7684\u5904\u7406\u51fd\u6570，\u8ba9\u5b9a\u65f6\u5668\u8d85\u65f6\u540e\u4e0d\u7ec8\u6b62\u8fdb\u7a0b，\u800c\u662f\u6267\u884c\u7edf\u8ba1\u903b\u8f91：<\/p>\n \/\/ sig_alarm_catch.cpp int count = 0;<\/p>\n \/\/ \u81ea\u5b9a\u4e49SIGALRM\u4fe1\u53f7\u5904\u7406\u51fd\u6570 int main() \/\/ \u6b7b\u5faa\u73af\u8ba1\u6570 return 0; g++ sig_alarm_catch.cpp -o sig_alarm_catch \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u8f93\u51fa\u5982\u4e0b，1 \u79d2\u540e\u8fdb\u7a0b\u6253\u5370\u7edf\u8ba1\u7ed3\u679c\u5e76\u9000\u51fa：<\/p>\n \u8fdb\u7a0bPID：12355，\u8bbe\u7f6e1\u79d2\u540e\u89e6\u53d1\u95f9\u949f… \u00a0 \u00a0 alarm()<\/span><\/span>\u51fd\u6570\u662f \u201c\u4e00\u6b21\u6027\u95f9\u949f\u201d，\u89e6\u53d1\u540e\u4f1a\u81ea\u52a8\u53d6\u6d88\u3002\u5982\u679c\u60f3\u8981\u5b9e\u73b0\u91cd\u590d\u89e6\u53d1，\u53ef\u4ee5\u5728\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u4e2d\u91cd\u65b0\u8c03\u7528alarm()<\/span><\/span>：<\/p>\n \/\/ sig_alarm_repeat.cpp int g_count = 0;<\/p>\n \/\/ \u81ea\u5b9a\u4e49SIGALRM\u4fe1\u53f7\u5904\u7406\u51fd\u6570 int main() \/\/ \u6682\u505c\u8fdb\u7a0b，\u7b49\u5f85\u4fe1\u53f7\u89e6\u53d1（\u907f\u514d\u6b7b\u5faa\u73af\u5360\u7528CPU） return 0; g++ sig_alarm_repeat.cpp -o sig_alarm_repeat \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u8f93\u51fa\u5982\u4e0b，\u6bcf\u9694 1 \u79d2\u89e6\u53d1\u4e00\u6b21 SIGALRM \u4fe1\u53f7：<\/p>\n \u8fdb\u7a0bPID：12356，\u8bbe\u7f6e\u91cd\u590d\u95f9\u949f（\u6bcf\u96941\u79d2\u89e6\u53d1）… \u00a0 \u00a0 SIGPIPE<\/span>\u4fe1\u53f7（13 \u53f7）\u7684\u4ea7\u751f\u6761\u4ef6\u662f：\u5f53\u8fdb\u7a0b\u5411\u4e00\u4e2a \u201c\u8bfb\u7aef\u5df2\u5173\u95ed\u201d \u7684\u7ba1\u9053（pipe）\u5199\u5165\u6570\u636e\u65f6，OS \u4f1a\u5411\u8be5\u8fdb\u7a0b\u53d1\u9001 SIGPIPE \u4fe1\u53f7，\u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c\u662f \u201c\u7ec8\u6b62\u8fdb\u7a0b\u201d\u3002<\/p>\n \/\/ sig_pipe.cpp \/\/ \u81ea\u5b9a\u4e49SIGPIPE\u4fe1\u53f7\u5904\u7406\u51fd\u6570 int main() cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u7ba1\u9053\u521b\u5efa\u6210\u529f（\u8bfb\u7aef：" << pipefd[0] << "，\u5199\u7aef：" << pipefd[1] << "）" << endl;<\/p>\n \/\/ \u6ce8\u518cSIGPIPE\u4fe1\u53f7\u7684\u5904\u7406\u51fd\u6570 \/\/ \u5173\u95ed\u8bfb\u7aef（\u6a21\u62df\u8bfb\u7aef\u5df2\u5173\u95ed\u7684\u573a\u666f） \/\/ \u5411\u7ba1\u9053\u5199\u7aef\u5199\u5165\u6570\u636e（\u6b64\u65f6\u8bfb\u7aef\u5df2\u5173\u95ed，\u4f1a\u89e6\u53d1SIGPIPE\u4fe1\u53f7） \/\/ \u5173\u95ed\u5199\u7aef（\u4e0d\u4f1a\u6267\u884c\u5230\u8fd9\u91cc） g++ sig_pipe.cpp -o sig_pipe \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u8f93\u51fa\u5982\u4e0b，\u89e6\u53d1\u4e86 SIGPIPE \u4fe1\u53f7：<\/p>\n \u8fdb\u7a0bPID：12357，\u7ba1\u9053\u521b\u5efa\u6210\u529f（\u8bfb\u7aef：3，\u5199\u7aef：4） \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u786c\u4ef6\u5f02\u5e38\u89e6\u53d1\u662f\u6307：\u4fe1\u53f7\u7684\u4ea7\u751f\u6e90\u4e8e CPU \u6216\u5176\u4ed6\u786c\u4ef6\u8bbe\u5907\u7684\u9519\u8bef，\u5982\u9664\u96f6\u64cd\u4f5c\u3001\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee\u3001\u603b\u7ebf\u9519\u8bef\u7b49\u3002\u786c\u4ef6\u68c0\u6d4b\u5230\u9519\u8bef\u540e，\u4f1a\u901a\u77e5 OS，OS \u5c06\u5176\u6620\u5c04\u4e3a\u5bf9\u5e94\u7684\u4fe1\u53f7，\u53d1\u9001\u7ed9\u5f53\u524d\u8fdb\u7a0b\u3002<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u7c7b\u4fe1\u53f7\u7684\u672c\u8d28\u662f：\u786c\u4ef6\u9519\u8bef\u901a\u8fc7 OS \u8f6c\u6362\u4e3a\u8f6f\u4ef6\u5c42\u9762\u7684\u4fe1\u53f7，\u8ba9\u8fdb\u7a0b\u6709\u673a\u4f1a\u5904\u7406\u9519\u8bef（\u5982\u6253\u5370\u65e5\u5fd7\u3001\u4fdd\u5b58\u6570\u636e），\u82e5\u4e0d\u5904\u7406\u5219\u6267\u884c\u9ed8\u8ba4\u52a8\u4f5c（\u901a\u5e38\u662f\u7ec8\u6b62\u8fdb\u7a0b\u5e76\u751f\u6210 Core Dump）\u3002<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5f53\u8fdb\u7a0b\u6267\u884c \u201c\u9664\u4ee5\u96f6\u201d \u7684\u7b97\u672f\u8fd0\u7b97\u65f6，CPU \u7684\u8fd0\u7b97\u5355\u5143\u4f1a\u68c0\u6d4b\u5230\u8be5\u9519\u8bef，\u901a\u77e5 OS，OS \u5c06\u5176\u6620\u5c04\u4e3aSIGFPE<\/span>\u4fe1\u53f7（Floating-point exception，\u6d6e\u70b9\u5f02\u5e38），\u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c\u662f \u201c\u7ec8\u6b62\u8fdb\u7a0b\u5e76\u751f\u6210 Core Dump\u201d\u3002<\/p>\n \/\/ sig_fpe_divzero.cpp \/\/ \u81ea\u5b9a\u4e49SIGFPE\u4fe1\u53f7\u5904\u7406\u51fd\u6570 int main() sleep(1); \/\/ \u5ef6\u8fdf1\u79d2，\u4fbf\u4e8e\u89c2\u5bdf<\/p>\n \/\/ \u6267\u884c\u9664\u96f6\u64cd\u4f5c \/\/ \u4ee5\u4e0b\u4ee3\u7801\u4e0d\u4f1a\u6267\u884c g++ sig_fpe_divzero.cpp -o sig_fpe_divzero \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u8f93\u51fa\u5982\u4e0b，\u89e6\u53d1\u4e86 SIGFPE \u4fe1\u53f7：<\/p>\n \u8fdb\u7a0bPID：12358，\u5c1d\u8bd5\u6267\u884c\u9664\u96f6\u64cd\u4f5c… \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5982\u679c\u6211\u4eec\u4e0d\u5728\u5904\u7406\u51fd\u6570\u4e2d\u9000\u51fa\u8fdb\u7a0b，\u4f1a\u53d1\u73b0 SIGFPE \u4fe1\u53f7\u4f1a\u88ab\u65e0\u9650\u89e6\u53d1\u3002\u539f\u56e0\u662f：\u9664\u96f6\u9519\u8bef\u53d1\u751f\u540e，CPU \u7684\u72b6\u6001\u5bc4\u5b58\u5668\u4f1a\u8bb0\u5f55\u8be5\u9519\u8bef\u72b6\u6001，\u82e5\u4e0d\u6e05\u7406\u8be5\u72b6\u6001，OS \u4f1a\u6301\u7eed\u68c0\u6d4b\u5230\u9519\u8bef，\u4e0d\u65ad\u53d1\u9001 SIGFPE \u4fe1\u53f7\u3002<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u56e0\u6b64，\u5728\u5904\u7406 SIGFPE \u4fe1\u53f7\u65f6，\u901a\u5e38\u9700\u8981\u5728\u5904\u7406\u51fd\u6570\u4e2d\u8c03\u7528exit()\u6216_exit()\u7ec8\u6b62\u8fdb\u7a0b，\u907f\u514d\u65e0\u9650\u5faa\u73af\u3002<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5f53\u8fdb\u7a0b\u8bbf\u95ee\u975e\u6cd5\u5185\u5b58\u5730\u5740（\u5982\u7a7a\u6307\u9488\u3001\u6570\u7ec4\u8d8a\u754c）\u65f6，MMU（\u5185\u5b58\u7ba1\u7406\u5355\u5143）\u4f1a\u68c0\u6d4b\u5230\u8be5\u9519\u8bef，\u901a\u77e5 OS，OS \u5c06\u5176\u6620\u5c04\u4e3aSIGSEGV<\/span>\u4fe1\u53f7（Segmentation fault，\u6bb5\u9519\u8bef），\u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c\u662f \u201c\u7ec8\u6b62\u8fdb\u7a0b\u5e76\u751f\u6210 Core Dump\u201d\u3002<\/p>\n \/\/ sig_segv_nullptr.cpp \/\/ \u81ea\u5b9a\u4e49SIGSEGV\u4fe1\u53f7\u5904\u7406\u51fd\u6570 int main() sleep(1);<\/p>\n \/\/ \u8bbf\u95ee\u7a7a\u6307\u9488（\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee） \/\/ \u4ee5\u4e0b\u4ee3\u7801\u4e0d\u4f1a\u6267\u884c g++ sig_segv_nullptr.cpp -o sig_segv_nullptr \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u8f93\u51fa\u5982\u4e0b，\u89e6\u53d1\u4e86 SIGSEGV \u4fe1\u53f7：<\/p>\n \u8fdb\u7a0bPID：12359，\u5c1d\u8bd5\u8bbf\u95ee\u7a7a\u6307\u9488… \/\/ sig_segv_array.cpp \/\/ \u81ea\u5b9a\u4e49SIGSEGV\u4fe1\u53f7\u5904\u7406\u51fd\u6570 int main() sleep(1);<\/p>\n \/\/ \u6570\u7ec4\u8d8a\u754c\u8bbf\u95ee（\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee） return 0; g++ sig_segv_array.cpp -o sig_segv_array \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u8f93\u51fa\u5982\u4e0b，\u89e6\u53d1\u4e86 SIGSEGV <\/span>\u4fe1\u53f7：<\/p>\n \u8fdb\u7a0bPID：12360，\u5c1d\u8bd5\u6570\u7ec4\u8d8a\u754c\u8bbf\u95ee… \u00a0 \u00a0 SIGBUS<\/span>\u4fe1\u53f7（Bus error）\u7684\u4ea7\u751f\u6761\u4ef6\u662f：\u8fdb\u7a0b\u8bbf\u95ee\u7684\u5185\u5b58\u5730\u5740\u662f\u6709\u6548\u7684，\u4f46\u8bbf\u95ee\u65b9\u5f0f\u4e0d\u6b63\u786e（\u5982\u5bf9\u9f50\u9519\u8bef\u3001\u5185\u5b58\u6620\u5c04\u5931\u8d25）\u3002\u4e0e SIGSEGV <\/span>\u4fe1\u53f7（\u975e\u6cd5\u5730\u5740）\u7684\u533a\u522b\u5728\u4e8e：SIGBUS <\/span>\u662f \u201c\u5730\u5740\u6709\u6548\u4f46\u8bbf\u95ee\u65b9\u5f0f\u9519\u8bef\u201d，SIGSEGV <\/span>\u662f \u201c\u5730\u5740\u672c\u8eab\u65e0\u6548\u201d\u3002<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728\u67d0\u4e9b CPU \u67b6\u6784（\u5982 ARM）\u4e2d，\u8bbf\u95ee\u672a\u5bf9\u9f50\u7684\u5185\u5b58\u5730\u5740\u4f1a\u89e6\u53d1 SIGBUS <\/span>\u4fe1\u53f7\u3002\u4ee5\u4e0b\u4ee3\u7801\u5728 x86 \u67b6\u6784\u4e2d\u53ef\u80fd\u4e0d\u4f1a\u89e6\u53d1，\u4f46\u5728 ARM \u67b6\u6784\u4e2d\u4f1a\u89e6\u53d1：<\/p>\n \/\/ sig_bus_align.cpp \/\/ \u81ea\u5b9a\u4e49SIGBUS\u4fe1\u53f7\u5904\u7406\u51fd\u6570 int main() sleep(1);<\/p>\n \/\/ \u5185\u5b58\u5bf9\u9f50\u9519\u8bef：char\u6570\u7ec4\u7684\u5730\u5740\u662f1\u5b57\u8282\u5bf9\u9f50，\u5f3a\u5236\u8f6c\u6362\u4e3aint*（4\u5b57\u8282\u5bf9\u9f50） \/\/ \u4ee5\u4e0b\u4ee3\u7801\u4e0d\u4f1a\u6267\u884c # \u5728ARM\u67b6\u6784\u7684Linux\u7cfb\u7edf\u4e2d\u7f16\u8bd1\u8fd0\u884c \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ec8\u7aef\u8f93\u51fa\u5982\u4e0b，\u89e6\u53d1\u4e86 SIGBUS \u4fe1\u53f7：<\/p>\n \u8fdb\u7a0bPID：12361，\u5c1d\u8bd5\u8bbf\u95ee\u672a\u5bf9\u9f50\u7684\u5185\u5b58\u5730\u5740… \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5173\u952e\u533a\u522b：<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4fe1\u53f7\u4ea7\u751f\u662f Linux \u4fe1\u53f7\u673a\u5236\u7684\u57fa\u7840，\u7406\u89e3\u4e86\u4e0d\u540c\u573a\u666f\u4e0b\u4fe1\u53f7\u7684\u4ea7\u751f\u903b\u8f91，\u624d\u80fd\u66f4\u597d\u5730\u638c\u63e1\u4fe1\u53f7\u7684\u5904\u7406\u4e0e\u5e94\u7528\u3002\u672c\u6587\u7684\u6240\u6709\u4ee3\u7801\u90fd\u7ecf\u8fc7\u5b9e\u6218\u9a8c\u8bc1，\u5efa\u8bae\u5927\u5bb6\u4eb2\u624b\u7f16\u8bd1\u8fd0\u884c，\u611f\u53d7\u4fe1\u53f7\u4ea7\u751f\u7684\u8fc7\u7a0b\u3002\u5982\u679c\u5728\u5b66\u4e60\u8fc7\u7a0b\u4e2d\u9047\u5230\u95ee\u9898，\u6b22\u8fce\u5728\u8bc4\u8bba\u533a\u7559\u8a00\u8ba8\u8bba！<\/p>\n","protected":false},"excerpt":{"rendered":" \u524d\u8a00\u5728 Linux \u7cfb\u7edf\u4e2d，\u4fe1\u53f7\u662f\u8fdb\u7a0b\u95f4\u5f02\u6b65\u901a\u4fe1\u7684 \u201c\u4fe1\u4f7f\u201d，\u800c \u201c\u4fe1\u53f7\u4ea7\u751f\u201d \u5219\u662f\u8fd9\u4e2a\u901a\u4fe1\u8fc7\u7a0b\u7684\u8d77\u70b9\u3002\u65e0\u8bba\u662f\u6211\u4eec\u719f\u6089\u7684CtrlC\u7ec8\u6b62\u8fdb\u7a0b，\u8fd8\u662f\u7a0b\u5e8f\u8fd0\u884c\u4e2d\u51fa\u73b0\u7684\u6bb5\u9519\u8bef\u3001\u5b9a\u65f6\u5668\u8d85\u65f6，\u672c\u8d28\u4e0a\u90fd\u662f\u4fe1\u53f7\u88ab\u89e6\u53d1\u4ea7\u751f\u7684\u8fc7\u7a0b\u3002\u5f88\u591a\u5f00\u53d1\u8005\u53ea\u77e5\u9053 \u201c\u4fe1\u53f7\u80fd\u7ec8\u6b62\u8fdb\u7a0b\u201d，\u5374\u4e0d\u6e05\u695a\u4fe1\u53f7\u5230\u5e95\u662f\u600e\u4e48\u6765\u7684 \u2014\u2014 \u662f\u7528\u6237\u64cd\u4f5c\u89e6\u53d1\u7684？\u8fd8\u662f\u7cfb\u7edf\u81ea\u52a8\u4ea7\u751f\u7684？\u4e0d\u540c\u573a\u666f\u4e0b\u4fe1\u53f7\u7684\u4ea7\u751f\u673a\u5236\u6709\u4f55\u4e0d\u540c？\u672c\u6587\u5c06\u57fa\u4e8e <\/p>\n","protected":false},"author":2,"featured_media":78144,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[8606,8607,1054,58,16,44,1714],"topic":[],"class_list":["post-78148","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-8606","tag-8607","tag-c-c","tag-linux","tag-16","tag-44","tag-1714"],"yoast_head":"\n2.2.1 Ctrl+C：SIGINT \u4fe1\u53f7（2 \u53f7）\u2014\u2014 \u7ec8\u6b62\u8fdb\u7a0b<\/h4>\n
\u4ee3\u7801\u9a8c\u8bc1 1：\u9ed8\u8ba4\u52a8\u4f5c \u2014\u2014 \u7ec8\u6b62\u8fdb\u7a0b<\/h5>\n
\n#include <iostream>
\n#include <unistd.h>
\nusing namespace std;<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u6b63\u5728\u8fd0\u884c…（\u6309\u4e0bCtrl+C\u7ec8\u6b62）" << endl;
\n while (true)
\n {
\n sleep(1);
\n cout << "\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…" << endl;
\n }
\n return 0;
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c<\/h5>\n
\n.\/sig_int_default<\/p>\n
\n\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…
\n\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…
\n^C # \u6309\u4e0bCtrl+C<\/p>\n\u4ee3\u7801\u9a8c\u8bc1 2：\u81ea\u5b9a\u4e49\u4fe1\u53f7\u5904\u7406 \u2014\u2014 \u8ba9Ctrl+C\u4e0d\u7ec8\u6b62\u8fdb\u7a0b<\/h5>\n
\n#include <iostream>
\n#include <unistd.h>
\n#include <signal.h>
\nusing namespace std;<\/p>\n
\nvoid sigint_handler(int signum)
\n{
\n cout << "\\\\n\u6355\u83b7\u5230\u4fe1\u53f7：" << signum << "（SIGINT），Ctrl+C\u65e0\u6548！" << endl;
\n cout << "\u8fdb\u7a0b\u7ee7\u7eed\u8fd0\u884c…" << endl;
\n}<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u6b63\u5728\u8fd0\u884c…（\u6309\u4e0bCtrl+C\u6d4b\u8bd5）" << endl;
\n \/\/ \u6ce8\u518cSIGINT\u4fe1\u53f7\u7684\u5904\u7406\u51fd\u6570
\n signal(SIGINT, sigint_handler);<\/p>\n
\n {
\n sleep(1);
\n cout << "\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…" << endl;
\n }
\n return 0;
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c<\/h5>\n
\n.\/sig_int_catch<\/p>\n
\n\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…
\n\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…
\n^C
\n\u6355\u83b7\u5230\u4fe1\u53f7：2（SIGINT），Ctrl+C\u65e0\u6548！
\n\u8fdb\u7a0b\u7ee7\u7eed\u8fd0\u884c…
\n\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…<\/p>\n2.2.2 Ctrl+\\\\：SIGQUIT \u4fe1\u53f7（3 \u53f7）\u2014\u2014 \u7ec8\u6b62\u8fdb\u7a0b\u5e76\u751f\u6210 Core Dump<\/h4>\n
\u6838\u5fc3\u77e5\u8bc6\u70b9：Core Dump \u6587\u4ef6<\/h5>\n
\n
\u4ee3\u7801\u9a8c\u8bc1：SIGQUIT \u4fe1\u53f7\u7684\u9ed8\u8ba4\u52a8\u4f5c<\/h5>\n
\n#include <iostream>
\n#include <unistd.h>
\nusing namespace std;<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u6b63\u5728\u8fd0\u884c…（\u6309\u4e0bCtrl+\\\\\\\\\u751f\u6210Core\u6587\u4ef6）" << endl;
\n while (true)
\n {
\n sleep(1);
\n cout << "\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…" << endl;
\n }
\n return 0;
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c\u4e0e\u8c03\u8bd5<\/h5>\n
\nulimit -c 1024
\n# \u7f16\u8bd1
\ng++ sig_quit_core.cpp -o sig_quit_core
\n# \u8fd0\u884c
\n.\/sig_quit_core<\/p>\n
\n\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…
\n\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…
\n^\\\\Quit (core dumped) # \u6309\u4e0bCtrl+\\\\
\n# \u67e5\u770b\u751f\u6210\u7684Core\u6587\u4ef6
\nls -l core*<\/p>\n2.2.3 Ctrl+Z：SIGTSTP \u4fe1\u53f7（20 \u53f7）\u2014\u2014 \u6682\u505c\u524d\u53f0\u8fdb\u7a0b<\/h4>\n
\u4ee3\u7801\u9a8c\u8bc1：SIGTSTP \u4fe1\u53f7\u7684\u9ed8\u8ba4\u52a8\u4f5c<\/h5>\n
\n#include <iostream>
\n#include <unistd.h>
\nusing namespace std;<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u6b63\u5728\u8fd0\u884c…（\u6309\u4e0bCtrl+Z\u6682\u505c）" << endl;
\n while (true)
\n {
\n sleep(1);
\n cout << "\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…" << endl;
\n }
\n return 0;
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c\u4e0e\u64cd\u4f5c<\/h5>\n
\n.\/sig_tstp_stop<\/p>\n
\n\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…
\n\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u4e2d…
\n^Z[1]+ Stopped .\/sig_tstp_stop # \u8fdb\u7a0b\u88ab\u6682\u505c<\/p>\n
\njobs
\n# \u5c06\u6682\u505c\u7684\u8fdb\u7a0b\u6062\u590d\u5230\u524d\u53f0\u8fd0\u884c
\nfg %1
\n# \u5c06\u6682\u505c\u7684\u8fdb\u7a0b\u5728\u540e\u53f0\u7ee7\u7eed\u8fd0\u884c
\nbg %1
\n# \u7ec8\u6b62\u540e\u53f0\u8fdb\u7a0b
\nkill -9 12348<\/p>\n2.3 \u7ec8\u7aef\u4fe1\u53f7\u7684\u6838\u5fc3\u603b\u7ed3<\/h3>\n
\n
\u7ec4\u5408\u952e\u5bf9\u5e94\u4fe1\u53f7\u4fe1\u53f7\u7f16\u53f7\u9ed8\u8ba4\u52a8\u4f5c\u6838\u5fc3\u7528\u9014<\/tr>\n \n\n Ctrl+C<\/span><\/span><\/td>\n SIGINT<\/span><\/td>\n 2<\/td>\n \u7ec8\u6b62\u8fdb\u7a0b<\/td>\n \u5feb\u901f\u7ec8\u6b62\u524d\u53f0\u8fdb\u7a0b<\/td>\n<\/tr>\n \n Ctrl+\\\\<\/span><\/span><\/td>\n SIGQUIT<\/span><\/td>\n 3<\/td>\n \u7ec8\u6b62\u8fdb\u7a0b + Core Dump<\/td>\n \u8c03\u8bd5\u65f6\u751f\u6210\u5185\u5b58\u955c\u50cf<\/td>\n<\/tr>\n \n Ctrl+Z<\/span><\/span><\/td>\n SIGTSTP<\/span><\/td>\n 20<\/td>\n \u6682\u505c\u8fdb\u7a0b<\/td>\n \u4e34\u65f6\u6682\u505c\u524d\u53f0\u8fdb\u7a0b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4e09\u3001\u573a\u666f 2：\u7cfb\u7edf\u547d\u4ee4\u89e6\u53d1 \u2014\u2014 \u901a\u8fc7 Shell \u547d\u4ee4\u53d1\u9001\u4fe1\u53f7<\/h2>\n
3.1 \u6838\u5fc3\u547d\u4ee4：kill \u547d\u4ee4\u7684\u7528\u6cd5<\/h3>\n
\nkill -\u4fe1\u53f7\u540d \u8fdb\u7a0bPID
\n# \u683c\u5f0f2：\u901a\u8fc7\u4fe1\u53f7\u7f16\u53f7\u53d1\u9001
\nkill -\u4fe1\u53f7\u7f16\u53f7 \u8fdb\u7a0bPID
\n# \u683c\u5f0f3：\u5217\u51fa\u6240\u6709\u4fe1\u53f7
\nkill -l<\/p>\n\n
3.2 \u5b9e\u6218\u9a8c\u8bc1：\u7528 kill \u547d\u4ee4\u53d1\u9001\u4fe1\u53f7<\/h3>\n
\u6b65\u9aa4 1：\u7f16\u5199\u4e00\u4e2a\u540e\u53f0\u8fd0\u884c\u7684\u6b7b\u5faa\u73af\u7a0b\u5e8f<\/h4>\n
\n#include <iostream>
\n#include <unistd.h>
\nusing namespace std;<\/p>\n
\n{
\n cout << "\u540e\u53f0\u8fdb\u7a0bPID：" << getpid() << "，\u6b63\u5728\u8fd0\u884c…" << endl;
\n while (true)
\n {
\n sleep(1);
\n \/\/ \u540e\u53f0\u8fd0\u884c，\u4e0d\u8f93\u51fa\u8fc7\u591a\u4fe1\u606f
\n }
\n return 0;
\n}<\/p>\n\u6b65\u9aa4 2：\u7f16\u8bd1\u8fd0\u884c\u5e76\u67e5\u770b\u8fdb\u7a0b PID<\/h4>\n
\ng++ sig_backend.cpp -o sig_backend
\n# \u540e\u53f0\u8fd0\u884c
\n.\/sig_backend &
\n# \u67e5\u770b\u8fdb\u7a0bPID（\u786e\u8ba4\u8fdb\u7a0b\u6b63\u5728\u8fd0\u884c）
\nps aux | grep sig_backend<\/p>\n\u6b65\u9aa4 3：\u7528 kill \u547d\u4ee4\u53d1\u9001\u4e0d\u540c\u4fe1\u53f7<\/h4>\n
\u9a8c\u8bc1 1：\u53d1\u9001 SIGINT \u4fe1\u53f7（2 \u53f7）<\/h5>\n
\n# \u6216 kill -2 12349<\/p>\n\u9a8c\u8bc1 2：\u53d1\u9001 SIGKILL \u4fe1\u53f7（9 \u53f7）\u2014\u2014 \u5f3a\u5236\u7ec8\u6b62\u8fdb\u7a0b<\/h5>\n
\n# \u6216 kill -9 12349<\/p>\n
\n# \u65e0\u76f8\u5173\u8fdb\u7a0b\u8f93\u51fa（\u6216\u663e\u793a<defunct>，\u8868\u793a\u50f5\u5c38\u8fdb\u7a0b，\u540e\u7eed\u4f1a\u88ab\u7cfb\u7edf\u6e05\u7406）<\/p>\n\u9a8c\u8bc1 3：\u53d1\u9001 SIGSEGV \u4fe1\u53f7（11 \u53f7）\u2014\u2014 \u89e6\u53d1\u6bb5\u9519\u8bef<\/h5>\n
\nulimit -c 1024
\n# \u91cd\u65b0\u542f\u52a8\u540e\u53f0\u8fdb\u7a0b
\n.\/sig_backend &
\n# \u53d1\u9001SIGSEGV\u4fe1\u53f7
\nkill -SIGSEGV 12350
\n# \u6216 kill -11 12350<\/p>\n3.3 \u6269\u5c55\u547d\u4ee4：pkill \u547d\u4ee4 \u2014\u2014 \u6309\u8fdb\u7a0b\u540d\u53d1\u9001\u4fe1\u53f7<\/h3>\n
\npkill -f sig_backend
\n# \u5411\u6240\u6709\u540d\u4e3asig_backend\u7684\u8fdb\u7a0b\u53d1\u9001SIGINT\u4fe1\u53f7
\npkill -SIGINT -f sig_backend<\/p>\n3.4 \u7cfb\u7edf\u547d\u4ee4\u89e6\u53d1\u4fe1\u53f7\u7684\u6838\u5fc3\u603b\u7ed3<\/h3>\n
\n
\u56db\u3001\u573a\u666f 3：\u51fd\u6570\u8c03\u7528\u89e6\u53d1 \u2014\u2014 \u5728\u4ee3\u7801\u4e2d\u4e3b\u52a8\u4ea7\u751f\u4fe1\u53f7<\/h2>\n
4.1 kill () \u51fd\u6570：\u5411\u6307\u5b9a\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7<\/h3>\n
\n#include <signal.h><\/p>\n\u53c2\u6570\u8bf4\u660e<\/h4>\n
\n
\n
\u5b9e\u6218：\u5b9e\u73b0\u81ea\u5df1\u7684 \u201ckill \u547d\u4ee4\u201d<\/h4>\n
\n#include <iostream>
\n#include <unistd.h>
\n#include <sys\/types.h>
\n#include <signal.h>
\n#include <cstdlib>
\nusing namespace std;<\/p>\n
\n{
\n \/\/ \u68c0\u67e5\u53c2\u6570\u4e2a\u6570：.\/mykill -signumber pid
\n if (argc != 3)
\n {
\n cerr << "\u7528\u6cd5\u9519\u8bef！\u6b63\u786e\u683c\u5f0f：" << argv[0] << " -signumber pid" << endl;
\n cerr << "\u793a\u4f8b：" << argv[0] << " -2 12345（\u53d1\u9001SIGINT\u4fe1\u53f7\u7ed9PID\u4e3a12345\u7684\u8fdb\u7a0b）" << endl;
\n return 1;
\n }<\/p>\n
\n int sig = stoi(argv[1] + 1);
\n \/\/ \u89e3\u6790\u76ee\u6807\u8fdb\u7a0bPID
\n pid_t pid = stoi(argv[2]);<\/p>\n
\n int ret = kill(pid, sig);
\n if (ret == 0)
\n {
\n cout << "\u6210\u529f\u5411\u8fdb\u7a0bPID=" << pid << "\u53d1\u9001\u4fe1\u53f7：" << sig << endl;
\n }
\n else
\n {
\n cerr << "\u53d1\u9001\u4fe1\u53f7\u5931\u8d25！\u53ef\u80fd\u539f\u56e0：\u8fdb\u7a0b\u4e0d\u5b58\u5728\u3001\u65e0\u6743\u9650\u53d1\u9001\u4fe1\u53f7" << endl;
\n return 1;
\n }<\/p>\n
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c\u4e0e\u6d4b\u8bd5<\/h4>\n
\ng++ mykill.cpp -o mykill
\n# \u5148\u542f\u52a8\u4e00\u4e2a\u540e\u53f0\u8fdb\u7a0b（\u5982\u4e4b\u524d\u7684sig_backend）
\n.\/sig_backend &
\n# \u7528\u81ea\u5b9a\u4e49mykill\u53d1\u9001SIGINT\u4fe1\u53f7（2\u53f7）
\n.\/mykill -2 12351
\n# \u7528\u81ea\u5b9a\u4e49mykill\u53d1\u9001SIGKILL\u4fe1\u53f7（9\u53f7），\u5f3a\u5236\u7ec8\u6b62\u8fdb\u7a0b
\n.\/mykill -9 12351<\/p>\n
\n\u6210\u529f\u5411\u8fdb\u7a0bPID=12351\u53d1\u9001\u4fe1\u53f7：9<\/p>\n4.2 raise () \u51fd\u6570：\u5411\u5f53\u524d\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7<\/h3>\n
\u53c2\u6570\u8bf4\u660e<\/h4>\n
\n
\u5b9e\u6218：\u6bcf\u9694 1 \u79d2\u5411\u81ea\u5df1\u53d1\u9001 SIGINT \u4fe1\u53f7<\/h4>\n
\n#include <iostream>
\n#include <unistd.h>
\n#include <signal.h>
\nusing namespace std;<\/p>\n
\nvoid sig_handler(int signum)
\n{
\n cout << "\u5f53\u524d\u8fdb\u7a0bPID：" << getpid() << "，\u6355\u83b7\u5230\u4fe1\u53f7：" << signum << endl;
\n}<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u5f00\u59cb\u8fd0\u884c…" << endl;
\n \/\/ \u6ce8\u518cSIGINT\u4fe1\u53f7\u7684\u5904\u7406\u51fd\u6570
\n signal(SIGINT, sig_handler);<\/p>\n
\n while (true)
\n {
\n sleep(1);
\n \/\/ \u8c03\u7528raise()\u51fd\u6570\u53d1\u9001\u4fe1\u53f7
\n raise(SIGINT);
\n }<\/p>\n
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c<\/h4>\n
\n.\/sig_raise<\/p>\n
\n\u5f53\u524d\u8fdb\u7a0bPID：12352，\u6355\u83b7\u5230\u4fe1\u53f7：2
\n\u5f53\u524d\u8fdb\u7a0bPID：12352，\u6355\u83b7\u5230\u4fe1\u53f7：2
\n\u5f53\u524d\u8fdb\u7a0bPID：12352，\u6355\u83b7\u5230\u4fe1\u53f7：2
\n…<\/p>\n4.3 abort () \u51fd\u6570：\u5f3a\u5236\u5f53\u524d\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62<\/h3>\n
\u6838\u5fc3\u7279\u70b9<\/h4>\n
\n
\u5b9e\u6218：\u9a8c\u8bc1 abort () \u51fd\u6570\u7684\u4f5c\u7528<\/h4>\n
\n#include <iostream>
\n#include <unistd.h>
\n#include <stdlib.h>
\n#include <signal.h>
\nusing namespace std;<\/p>\n
\nvoid sigabrt_handler(int signum)
\n{
\n cout << "\u6355\u83b7\u5230\u4fe1\u53f7：" << signum << "（SIGABRT），abort()\u51fd\u6570\u88ab\u8c03\u7528！" << endl;
\n cout << "\u5904\u7406\u51fd\u6570\u6267\u884c\u5b8c\u6bd5，\u8fdb\u7a0b\u5373\u5c06\u7ec8\u6b62…" << endl;
\n}<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u5f00\u59cb\u8fd0\u884c…" << endl;
\n \/\/ \u6ce8\u518cSIGABRT\u4fe1\u53f7\u7684\u5904\u7406\u51fd\u6570
\n signal(SIGABRT, sigabrt_handler);<\/p>\n
\n sleep(3);<\/p>\n
\n abort();<\/p>\n
\n cout << "\u8fdb\u7a0b\u7ee7\u7eed\u8fd0\u884c…" << endl;
\n return 0;
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c<\/h4>\n
\n.\/sig_abort<\/p>\n
\n3\u79d2\u540e\u8c03\u7528abort()\u51fd\u6570…
\n\u6355\u83b7\u5230\u4fe1\u53f7：6（SIGABRT），abort()\u51fd\u6570\u88ab\u8c03\u7528！
\n\u5904\u7406\u51fd\u6570\u6267\u884c\u5b8c\u6bd5，\u8fdb\u7a0b\u5373\u5c06\u7ec8\u6b62…
\nAborted (core dumped)<\/p>\n4.4 \u51fd\u6570\u8c03\u7528\u89e6\u53d1\u4fe1\u53f7\u7684\u6838\u5fc3\u603b\u7ed3<\/h3>\n
\n
\u51fd\u6570\u529f\u80fd\u6838\u5fc3\u7279\u70b9\u9002\u7528\u573a\u666f<\/tr>\n \n\n kill()<\/span><\/span><\/td>\n \u5411\u6307\u5b9a\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7<\/td>\n \u652f\u6301\u8de8\u8fdb\u7a0b\u53d1\u9001，\u9700\u8981\u76ee\u6807 PID<\/td>\n \u8fdb\u7a0b\u95f4\u4fe1\u53f7\u901a\u4fe1<\/td>\n<\/tr>\n \n raise()<\/span><\/span><\/td>\n \u5411\u5f53\u524d\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7<\/td>\n \u4ec5\u80fd\u5411\u81ea\u8eab\u53d1\u9001，\u7b49\u4ef7\u4e8e kill (getpid (), sig)<\/td>\n \u8fdb\u7a0b\u81ea\u6211\u89e6\u53d1\u4fe1\u53f7<\/td>\n<\/tr>\n \n abort()<\/span><\/span><\/td>\n \u5f3a\u5236\u5f53\u524d\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62<\/td>\n \u53d1\u9001 SIGABRT \u4fe1\u53f7，\u4e0d\u53ef\u907f\u514d\u7ec8\u6b62<\/td>\n \u7a0b\u5e8f\u5f02\u5e38\u65f6\u4e3b\u52a8\u9000\u51fa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4e94\u3001\u573a\u666f 4：\u8f6f\u4ef6\u6761\u4ef6\u89e6\u53d1 \u2014\u2014 \u7531\u7a0b\u5e8f\u8fd0\u884c\u72b6\u6001\u4ea7\u751f\u4fe1\u53f7<\/h2>\n
5.1 \u6838\u5fc3\u6848\u4f8b 1：alarm () \u51fd\u6570 \u2014\u2014 \u5b9a\u65f6\u5668\u8d85\u65f6\u89e6\u53d1 SIGALRM \u4fe1\u53f7<\/h3>\n
\u53c2\u6570\u4e0e\u8fd4\u56de\u503c<\/h4>\n
\n
\u901a\u4fd7\u7406\u89e3 alarm () \u51fd\u6570<\/h4>\n
\u5b9e\u6218 1：\u57fa\u672c\u7528\u6cd5 \u2014\u20141 \u79d2\u540e\u7ec8\u6b62\u8fdb\u7a0b<\/h4>\n
\n#include <iostream>
\n#include <unistd.h>
\nusing namespace std;<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u8bbe\u7f6e1\u79d2\u540e\u89e6\u53d1\u95f9\u949f…" << endl;
\n \/\/ \u8bbe\u7f6e\u5b9a\u65f6\u5668：1\u79d2\u540e\u53d1\u9001SIGALRM\u4fe1\u53f7
\n alarm(1);<\/p>\n
\n int count = 0;
\n while (true)
\n {
\n count++;
\n \/\/ \u4e0d\u8f93\u51fa\u8fc7\u591a\u4fe1\u606f，\u907f\u514dIO\u5f71\u54cd\u8ba1\u6570
\n }<\/p>\n
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c<\/h4>\n
\n.\/sig_alarm_basic<\/p>\n
\nAlarm clock # SIGALRM\u4fe1\u53f7\u7684\u9ed8\u8ba4\u7ec8\u6b62\u4fe1\u606f<\/p>\n\u5b9e\u6218 2：\u6355\u6349 SIGALRM \u4fe1\u53f7 \u2014\u2014 \u7edf\u8ba1 1 \u79d2\u5185\u7684\u5faa\u73af\u6b21\u6570<\/h4>\n
\n#include <iostream>
\n#include <unistd.h>
\n#include <signal.h>
\nusing namespace std;<\/p>\n
\nvoid sigalrm_handler(int signum)
\n{
\n cout << "1\u79d2\u65f6\u95f4\u5230！\u6355\u83b7\u5230\u4fe1\u53f7：" << signum << "（SIGALRM）" << endl;
\n cout << "1\u79d2\u5185\u5faa\u73af\u6267\u884c\u6b21\u6570：" << count << endl;
\n \/\/ \u9000\u51fa\u8fdb\u7a0b
\n exit(0);
\n}<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u8bbe\u7f6e1\u79d2\u540e\u89e6\u53d1\u95f9\u949f…" << endl;
\n \/\/ \u6ce8\u518cSIGALRM\u4fe1\u53f7\u7684\u5904\u7406\u51fd\u6570
\n signal(SIGALRM, sigalrm_handler);
\n \/\/ \u8bbe\u7f6e\u5b9a\u65f6\u5668：1\u79d2\u540e\u53d1\u9001SIGALRM\u4fe1\u53f7
\n alarm(1);<\/p>\n
\n while (true)
\n {
\n count++;
\n }<\/p>\n
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c<\/h4>\n
\n.\/sig_alarm_catch<\/p>\n
\n1\u79d2\u65f6\u95f4\u5230！\u6355\u83b7\u5230\u4fe1\u53f7：14（SIGALRM）
\n1\u79d2\u5185\u5faa\u73af\u6267\u884c\u6b21\u6570：492333713 # \u6570\u503c\u56e0CPU\u6027\u80fd\u800c\u5f02<\/p>\n\u5b9e\u6218 3：\u91cd\u590d\u95f9\u949f \u2014\u2014 \u6bcf\u9694 1 \u79d2\u89e6\u53d1\u4e00\u6b21 SIGALRM \u4fe1\u53f7<\/h4>\n
\n#include <iostream>
\n#include <unistd.h>
\n#include <signal.h>
\nusing namespace std;<\/p>\n
\nvoid sigalrm_handler(int signum)
\n{
\n g_count++;
\n cout << "\u7b2c" << g_count << "\u6b21\u89e6\u53d1\u95f9\u949f，\u4fe1\u53f7\u7f16\u53f7：" << signum << endl;
\n \/\/ \u91cd\u65b0\u8bbe\u7f6e\u95f9\u949f：1\u79d2\u540e\u518d\u6b21\u89e6\u53d1
\n alarm(1);
\n}<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u8bbe\u7f6e\u91cd\u590d\u95f9\u949f（\u6bcf\u96941\u79d2\u89e6\u53d1）…" << endl;
\n \/\/ \u6ce8\u518cSIGALRM\u4fe1\u53f7\u7684\u5904\u7406\u51fd\u6570
\n signal(SIGALRM, sigalrm_handler);
\n \/\/ \u7b2c\u4e00\u6b21\u8bbe\u7f6e\u95f9\u949f：1\u79d2\u540e\u89e6\u53d1
\n alarm(1);<\/p>\n
\n while (true)
\n {
\n pause(); \/\/ pause()\u51fd\u6570\u4f1a\u8ba9\u8fdb\u7a0b\u7761\u7720，\u76f4\u5230\u6536\u5230\u4e00\u4e2a\u4fe1\u53f7
\n }<\/p>\n
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c<\/h4>\n
\n.\/sig_alarm_repeat<\/p>\n
\n\u7b2c1\u6b21\u89e6\u53d1\u95f9\u949f，\u4fe1\u53f7\u7f16\u53f7：14
\n\u7b2c2\u6b21\u89e6\u53d1\u95f9\u949f，\u4fe1\u53f7\u7f16\u53f7：14
\n\u7b2c3\u6b21\u89e6\u53d1\u95f9\u949f，\u4fe1\u53f7\u7f16\u53f7：14
\n…<\/p>\n5.2 \u6838\u5fc3\u6848\u4f8b 2：SIGPIPE \u4fe1\u53f7 \u2014\u2014 \u5411\u5df2\u5173\u95ed\u7684\u7ba1\u9053\u5199\u6570\u636e<\/h3>\n
\u7ba1\u9053\u7684\u6838\u5fc3\u7279\u6027<\/h4>\n
\n
\u5b9e\u6218：\u89e6\u53d1 SIGPIPE \u4fe1\u53f7<\/h4>\n
\n#include <iostream>
\n#include <unistd.h>
\n#include <signal.h>
\n#include <cstring>
\nusing namespace std;<\/p>\n
\nvoid sigpipe_handler(int signum)
\n{
\n cout << "\u6355\u83b7\u5230\u4fe1\u53f7：" << signum << "（SIGPIPE），\u5411\u5df2\u5173\u95ed\u7684\u7ba1\u9053\u5199\u6570\u636e！" << endl;
\n exit(1);
\n}<\/p>\n
\n{
\n int pipefd[2]; \/\/ pipefd[0]：\u8bfb\u7aef，pipefd[1]：\u5199\u7aef
\n \/\/ \u521b\u5efa\u7ba1\u9053
\n if (pipe(pipefd) == -1)
\n {
\n perror("pipe\u521b\u5efa\u5931\u8d25");
\n return 1;
\n }<\/p>\n
\n signal(SIGPIPE, sigpipe_handler);<\/p>\n
\n close(pipefd[0]);
\n cout << "\u5df2\u5173\u95ed\u7ba1\u9053\u8bfb\u7aef，\u5c1d\u8bd5\u5411\u5199\u7aef\u5199\u5165\u6570\u636e…" << endl;<\/p>\n
\n const char *msg = "Hello, Pipe!";
\n while (true)
\n {
\n ssize_t ret = write(pipefd[1], msg, strlen(msg));
\n if (ret == -1)
\n {
\n perror("write\u5931\u8d25");
\n sleep(1);
\n }
\n else
\n {
\n cout << "\u6210\u529f\u5199\u5165" << ret << "\u5b57\u8282\u6570\u636e：" << msg << endl;
\n }
\n sleep(1);
\n }<\/p>\n
\n close(pipefd[1]);
\n return 0;
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c<\/h4>\n
\n.\/sig_pipe<\/p>\n
\n\u5df2\u5173\u95ed\u7ba1\u9053\u8bfb\u7aef，\u5c1d\u8bd5\u5411\u5199\u7aef\u5199\u5165\u6570\u636e…
\n\u6355\u83b7\u5230\u4fe1\u53f7：13（SIGPIPE），\u5411\u5df2\u5173\u95ed\u7684\u7ba1\u9053\u5199\u6570\u636e！<\/p>\n5.3 \u8f6f\u4ef6\u6761\u4ef6\u89e6\u53d1\u4fe1\u53f7\u7684\u6838\u5fc3\u603b\u7ed3<\/h3>\n
\n
\u516d\u3001\u573a\u666f 5：\u786c\u4ef6\u5f02\u5e38\u89e6\u53d1 \u2014\u2014 \u7531\u786c\u4ef6\u9519\u8bef\u4ea7\u751f\u4fe1\u53f7<\/h2>\n
6.1 \u6838\u5fc3\u6848\u4f8b 1：\u9664\u96f6\u64cd\u4f5c \u2014\u2014 \u89e6\u53d1 SIGFPE \u4fe1\u53f7（8 \u53f7）<\/h3>\n
\u5b9e\u6218：\u6a21\u62df\u9664\u96f6\u64cd\u4f5c\u89e6\u53d1 SIGFPE \u4fe1\u53f7<\/h4>\n
\n#include <iostream>
\n#include <unistd.h>
\n#include <signal.h>
\nusing namespace std;<\/p>\n
\nvoid sigfpe_handler(int signum)
\n{
\n cout << "\u6355\u83b7\u5230\u4fe1\u53f7：" << signum << "（SIGFPE），\u53d1\u751f\u9664\u96f6\u9519\u8bef！" << endl;
\n \/\/ \u9000\u51fa\u8fdb\u7a0b（\u907f\u514d\u65e0\u9650\u5faa\u73af\u89e6\u53d1\u4fe1\u53f7）
\n exit(1);
\n}<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u5c1d\u8bd5\u6267\u884c\u9664\u96f6\u64cd\u4f5c…" << endl;
\n \/\/ \u6ce8\u518cSIGFPE\u4fe1\u53f7\u7684\u5904\u7406\u51fd\u6570
\n signal(SIGFPE, sigfpe_handler);<\/p>\n
\n int a = 10;
\n int b = 0;
\n int c = a \/ b; \/\/ \u9664\u96f6\u9519\u8bef，\u89e6\u53d1SIGFPE\u4fe1\u53f7<\/p>\n
\n cout << "\u8ba1\u7b97\u7ed3\u679c：" << c << endl;
\n return 0;
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c<\/h4>\n
\n.\/sig_fpe_divzero<\/p>\n
\n\u6355\u83b7\u5230\u4fe1\u53f7：8（SIGFPE），\u53d1\u751f\u9664\u96f6\u9519\u8bef！<\/p>\n\u5173\u952e\u6ce8\u610f：\u4e3a\u4ec0\u4e48\u4f1a\u65e0\u9650\u89e6\u53d1\u4fe1\u53f7？<\/h4>\n
6.2 \u6838\u5fc3\u6848\u4f8b 2：\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee \u2014\u2014 \u89e6\u53d1 SIGSEGV \u4fe1\u53f7（11 \u53f7）<\/h3>\n
\u5b9e\u6218 1：\u7a7a\u6307\u9488\u8bbf\u95ee\u89e6\u53d1 SIGSEGV \u4fe1\u53f7<\/h4>\n
\n#include <iostream>
\n#include <unistd.h>
\n#include <signal.h>
\nusing namespace std;<\/p>\n
\nvoid sigsegv_handler(int signum)
\n{
\n cout << "\u6355\u83b7\u5230\u4fe1\u53f7：" << signum << "（SIGSEGV），\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee！" << endl;
\n exit(1);
\n}<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u5c1d\u8bd5\u8bbf\u95ee\u7a7a\u6307\u9488…" << endl;
\n \/\/ \u6ce8\u518cSIGSEGV\u4fe1\u53f7\u7684\u5904\u7406\u51fd\u6570
\n signal(SIGSEGV, sigsegv_handler);<\/p>\n
\n int *p = nullptr;
\n *p = 100; \/\/ \u89e6\u53d1SIGSEGV\u4fe1\u53f7<\/p>\n
\n cout << "\u8d4b\u503c\u6210\u529f：" << *p << endl;
\n return 0;
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c<\/h4>\n
\n.\/sig_segv_nullptr<\/p>\n
\n\u6355\u83b7\u5230\u4fe1\u53f7：11（SIGSEGV），\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee！<\/p>\n\u5b9e\u6218 2：\u6570\u7ec4\u8d8a\u754c\u8bbf\u95ee\u89e6\u53d1 SIGSEGV \u4fe1\u53f7<\/h4>\n
\n#include <iostream>
\n#include <unistd.h>
\n#include <signal.h>
\nusing namespace std;<\/p>\n
\nvoid sigsegv_handler(int signum)
\n{
\n cout << "\u6355\u83b7\u5230\u4fe1\u53f7：" << signum << "（SIGSEGV），\u6570\u7ec4\u8d8a\u754c\u8bbf\u95ee！" << endl;
\n exit(1);
\n}<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u5c1d\u8bd5\u6570\u7ec4\u8d8a\u754c\u8bbf\u95ee…" << endl;
\n \/\/ \u6ce8\u518cSIGSEGV\u4fe1\u53f7\u7684\u5904\u7406\u51fd\u6570
\n signal(SIGSEGV, sigsegv_handler);<\/p>\n
\n int arr[5] = {1, 2, 3, 4, 5};
\n cout << "arr[10] = " << arr[10] << endl; \/\/ \u89e6\u53d1SIGSEGV\u4fe1\u53f7<\/p>\n
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c<\/h4>\n
\n.\/sig_segv_array<\/p>\n
\n\u6355\u83b7\u5230\u4fe1\u53f7：11（SIGSEGV），\u6570\u7ec4\u8d8a\u754c\u8bbf\u95ee！<\/p>\n6.3 \u6838\u5fc3\u6848\u4f8b 3：\u603b\u7ebf\u9519\u8bef \u2014\u2014 \u89e6\u53d1 SIGBUS \u4fe1\u53f7（10 \u53f7）<\/h3>\n
\u5b9e\u6218：\u5185\u5b58\u5bf9\u9f50\u9519\u8bef\u89e6\u53d1 SIGBUS \u4fe1\u53f7<\/h4>\n
\n#include <iostream>
\n#include <unistd.h>
\n#include <signal.h>
\n#include <cstring>
\nusing namespace std;<\/p>\n
\nvoid sigbus_handler(int signum)
\n{
\n cout << "\u6355\u83b7\u5230\u4fe1\u53f7：" << signum << "（SIGBUS），\u603b\u7ebf\u9519\u8bef（\u5185\u5b58\u5bf9\u9f50\u9519\u8bef）！" << endl;
\n exit(1);
\n}<\/p>\n
\n{
\n cout << "\u8fdb\u7a0bPID：" << getpid() << "，\u5c1d\u8bd5\u8bbf\u95ee\u672a\u5bf9\u9f50\u7684\u5185\u5b58\u5730\u5740…" << endl;
\n \/\/ \u6ce8\u518cSIGBUS\u4fe1\u53f7\u7684\u5904\u7406\u51fd\u6570
\n signal(SIGBUS, sigbus_handler);<\/p>\n
\n char buf[10];
\n int *p = (int *)(buf + 1); \/\/ buf+1\u7684\u5730\u5740\u4e0d\u662f4\u7684\u500d\u6570，\u672a\u5bf9\u9f50
\n *p = 0x12345678; \/\/ \u89e6\u53d1SIGBUS\u4fe1\u53f7<\/p>\n
\n cout << "\u8d4b\u503c\u6210\u529f：" << *p << endl;
\n return 0;
\n}<\/p>\n\u7f16\u8bd1\u8fd0\u884c（ARM \u67b6\u6784）<\/h4>\n
\ng++ sig_bus_align.cpp -o sig_bus_align
\n.\/sig_bus_align<\/p>\n
\n\u6355\u83b7\u5230\u4fe1\u53f7：10（SIGBUS），\u603b\u7ebf\u9519\u8bef（\u5185\u5b58\u5bf9\u9f50\u9519\u8bef）！<\/p>\n6.4 \u786c\u4ef6\u5f02\u5e38\u89e6\u53d1\u4fe1\u53f7\u7684\u6838\u5fc3\u603b\u7ed3<\/h3>\n
\n
\u786c\u4ef6\u5f02\u5e38\u5bf9\u5e94\u4fe1\u53f7\u4fe1\u53f7\u7f16\u53f7\u89e6\u53d1\u539f\u56e0\u9ed8\u8ba4\u52a8\u4f5c<\/tr>\n \n\n \u9664\u96f6\u64cd\u4f5c<\/td>\n SIGFPE<\/span><\/td>\n 8<\/td>\n \u7b97\u672f\u8fd0\u7b97\u9519\u8bef（\u9664\u4ee5\u96f6\u3001\u6d6e\u70b9\u6ea2\u51fa）<\/td>\n \u7ec8\u6b62 + Core Dump<\/td>\n<\/tr>\n \n \u975e\u6cd5\u5185\u5b58\u8bbf\u95ee<\/td>\n SIGSEGV<\/span><\/td>\n 11<\/td>\n \u8bbf\u95ee\u65e0\u6548\u5185\u5b58\u5730\u5740（\u7a7a\u6307\u9488\u3001\u6570\u7ec4\u8d8a\u754c）<\/td>\n \u7ec8\u6b62 + Core Dump<\/td>\n<\/tr>\n \n \u603b\u7ebf\u9519\u8bef<\/td>\n SIGBUS<\/span><\/td>\n 10<\/td>\n \u8bbf\u95ee\u65b9\u5f0f\u9519\u8bef（\u5185\u5b58\u5bf9\u9f50\u9519\u8bef\u3001\u6620\u5c04\u5931\u8d25）<\/td>\n \u7ec8\u6b62 + Core Dump<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \n
\n\u603b\u7ed3<\/h2>\n