{"id":1807,"date":"2019-01-07T10:22:48","date_gmt":"2019-01-07T02:22:48","guid":{"rendered":"https:\/\/www.yusian.com\/blog\/?p=1807"},"modified":"2020-12-02T10:40:11","modified_gmt":"2020-12-02T02:40:11","slug":"linux%e7%bc%96%e7%a8%8b-%e4%bf%a1%e5%8f%b7","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/cpp\/2019\/01\/07\/1022481807.html","title":{"rendered":"Linux\u7f16\u7a0b&#8211;\u4fe1\u53f7"},"content":{"rendered":"<h3>1\u3001\u4fe1\u53f7\u7684\u6982\u5ff5\uff1a\u5171\u6027<\/h3>\n<ul>\n<li>\u7b80\u5355<\/li>\n<li>\u4e0d\u80fd\u643a\u5e26\u5927\u91cf\u4fe1\u606f<\/li>\n<li>\u6ee1\u8db3\u67d0\u4e2a\u7279\u8bbe\u6761\u4ef6<\/li>\n<\/ul>\n<h3>2\u3001\u4e0e\u4fe1\u53f7\u76f8\u5173\u7684\u4e8b\u4ef6\u4e0e\u72b6\u6001<\/h3>\n<ul>\n<li>\u952e\u76d8\u4ea7\u751f\uff1aCtrl+C\u3001Ctrl+Z\u7b49\uff1b<\/li>\n<li>\u7cfb\u7edf\u8c03\u7528\uff1akill\u3001raise\u3001abort<\/li>\n<li>\u8f6f\u4ef6\u6761\u4ef6\uff1a\u5b9a\u65f6\u5668<\/li>\n<li>\u786c\u4ef6\u5f02\u5e38\uff1a\u975e\u6cd5\u8bbf\u95ee\u3001\u96640\u7b49\uff1b<\/li>\n<li>\u547d\u4ee4\u4ea7\u751f\uff1akill\u547d\u4ee4<\/li>\n<\/ul>\n<h3>3\u3001\u4fe1\u53f7\u7684\u5904\u7406\u65b9\u5f0f<\/h3>\n<ul>\n<li>\u6267\u884c\u9ed8\u8ba4\u52a8\u4f5c\n<ul>\n<li>Term\uff1a\u7ec8\u6b62\u8fdb\u7a0b<\/li>\n<li>Ign\uff1a\u5ffd\u7565\u4fe1\u53f7<\/li>\n<li>Core\uff1a\u7ec8\u6b62\u8fdb\u7a0b\uff0c\u751f\u6210Core\u6587\u4ef6\uff08\u67e5\u770b\u6b7b\u4ea1\u539f\u56e0\uff0c\u7528\u4e8egdb\u8c03\u8bd5\uff09<\/li>\n<li>Stop\uff1a\u505c\u6b62\uff08\u6682\u505c\uff09\u8fdb\u7a0b<\/li>\n<li>Cont\uff1a\u7ee7\u7eed\u505c\u6b62\uff08\u6682\u505c\uff09\u8fdb\u7a0b<\/li>\n<\/ul>\n<\/li>\n<li>\u5ffd\u7565\uff08\u4e22\u5f03\uff09<\/li>\n<li>\u6355\u6349\uff08\u8c03\u7528\u6237\u5904\u7406\u51fd\u6570\uff09<\/li>\n<\/ul>\n<h3>4\u3001\u4fe1\u53f7\u56db\u8981\u7d20<\/h3>\n<ul>\n<li>\u7f16\u53f7<\/li>\n<li>\u540d\u79f0<\/li>\n<li>\u4e8b\u4ef6<\/li>\n<li>\u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c<\/li>\n<\/ul>\n<h3>5\u3001\u5e38\u7528\u4fe1\u53f7<\/h3>\n<pre><code class=\"language-cmd line-numbers\">~$ kill -l\n1) SIGHUP 2) SIGINT 3) SIGQUIT 4) SIGILL\n5) SIGTRAP 6) SIGABRT 7) SIGBUS 8) SIGFPE\n9) SIGKILL 10) SIGUSR1 11) SIGSEGV 12) SIGUSR2\n13) SIGPIPE 14) SIGALRM 15) SIGTERM 17) SIGCHLD\n18) SIGCONT 19) SIGSTOP 20) SIGTSTP 21) SIGTTIN\n22) SIGTTOU 23) SIGURG 24) SIGXCPU 25) SIGXFSZ\n26) SIGVTALRM 27) SIGPROF 28) SIGWINCH 29) SIGIO\n30) SIGPWR 31) SIGSYS 34) SIGRTMIN 35) SIGRTMIN+1\n36) SIGRTMIN+2 37) SIGRTMIN+3 38) SIGRTMIN+4 39) SIGRTMIN+5\n40) SIGRTMIN+6 41) SIGRTMIN+7 42) SIGRTMIN+8 43) SIGRTMIN+9\n44) SIGRTMIN+10 45) SIGRTMIN+11 46) SIGRTMIN+12 47) SIGRTMIN+13\n48) SIGRTMIN+14 49) SIGRTMIN+15 50) SIGRTMAX-14 51) SIGRTMAX-13\n52) SIGRTMAX-12 53) SIGRTMAX-11 54) SIGRTMAX-10 55) SIGRTMAX-9\n56) SIGRTMAX-8 57) SIGRTMAX-7 58) SIGRTMAX-6 59) SIGRTMAX-5\n60) SIGRTMAX-4 61) SIGRTMAX-3 62) SIGRTMAX-2 63) SIGRTMAX-1\n64) SIGRTMAX\n<\/code><\/pre>\n<p>\u5217\u8868\u4e2d\uff0c\u7f16\u53f7\u4e3a1 ~ 31\u7684\u4fe1\u53f7\u4e3a\u4f20\u7edfUNIX\u652f\u6301\u7684\u4fe1\u53f7\uff0c\u662f\u4e0d\u53ef\u9760\u4fe1\u53f7(\u975e\u5b9e\u65f6\u7684)\uff0c\u7f16\u53f7\u4e3a32 ~ 63\u7684\u4fe1\u53f7\u662f\u540e\u6765\u6269\u5145\u7684\uff0c\u79f0\u505a\u53ef\u9760\u4fe1\u53f7(\u5b9e\u65f6\u4fe1\u53f7)\u3002\u4e0d\u53ef\u9760\u4fe1\u53f7\u548c\u53ef\u9760\u4fe1\u53f7\u7684\u533a\u522b\u5728\u4e8e\u524d\u8005\u4e0d\u652f\u6301\u6392\u961f\uff0c\u53ef\u80fd\u4f1a\u9020\u6210\u4fe1\u53f7\u4e22\u5931\uff0c\u800c\u540e\u8005\u4e0d\u4f1a\u3002<\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u5bf9\u7f16\u53f7\u5c0f\u4e8eSIGRTMIN\u7684\u4fe1\u53f7\u8fdb\u884c\u8ba8\u8bba\u3002<\/p>\n<ol>\n<li>SIGHUP \u672c\u4fe1\u53f7\u5728\u7528\u6237\u7ec8\u7aef\u8fde\u63a5(\u6b63\u5e38\u6216\u975e\u6b63\u5e38)\u7ed3\u675f\u65f6\u53d1\u51fa, \u901a\u5e38\u662f\u5728\u7ec8\u7aef\u7684\u63a7\u5236\u8fdb\u7a0b\u7ed3\u675f\u65f6, \u901a\u77e5\u540c\u4e00session\u5185\u7684\u5404\u4e2a\u4f5c\u4e1a, \u8fd9\u65f6\u5b83\u4eec\u4e0e\u63a7\u5236\u7ec8\u7aef\u4e0d\u518d\u5173\u8054\u3002\u767b\u5f55Linux\u65f6\uff0c\u7cfb\u7edf\u4f1a\u5206\u914d\u7ed9\u767b\u5f55\u7528\u6237\u4e00\u4e2a\u7ec8\u7aef(Session)\u3002\u5728\u8fd9\u4e2a\u7ec8\u7aef\u8fd0\u884c\u7684\u6240\u6709\u7a0b\u5e8f\uff0c\u5305\u62ec\u524d\u53f0\u8fdb\u7a0b\u7ec4\u548c\u540e\u53f0\u8fdb\u7a0b\u7ec4\uff0c\u4e00\u822c\u90fd\u5c5e\u4e8e\u8fd9\u4e2a Session\u3002\u5f53\u7528\u6237\u9000\u51faLinux\u767b\u5f55\u65f6\uff0c\u524d\u53f0\u8fdb\u7a0b\u7ec4\u548c\u540e\u53f0\u6709\u5bf9\u7ec8\u7aef\u8f93\u51fa\u7684\u8fdb\u7a0b\u5c06\u4f1a\u6536\u5230SIGHUP\u4fe1\u53f7\u3002\u8fd9\u4e2a\u4fe1\u53f7\u7684\u9ed8\u8ba4\u64cd\u4f5c\u4e3a\u7ec8\u6b62\u8fdb\u7a0b\uff0c\u56e0\u6b64\u524d\u53f0\u8fdb \u7a0b\u7ec4\u548c\u540e\u53f0\u6709\u7ec8\u7aef\u8f93\u51fa\u7684\u8fdb\u7a0b\u5c31\u4f1a\u4e2d\u6b62\u3002\u4e0d\u8fc7\u53ef\u4ee5\u6355\u83b7\u8fd9\u4e2a\u4fe1\u53f7\uff0c\u6bd4\u5982wget\u80fd\u6355\u83b7SIGHUP\u4fe1\u53f7\uff0c\u5e76\u5ffd\u7565\u5b83\uff0c\u8fd9\u6837\u5c31\u7b97\u9000\u51fa\u4e86Linux\u767b\u5f55\uff0cwget\u4e5f \u80fd\u7ee7\u7eed\u4e0b\u8f7d\u3002\u6b64\u5916\uff0c\u5bf9\u4e8e\u4e0e\u7ec8\u7aef\u8131\u79bb\u5173\u7cfb\u7684\u5b88\u62a4\u8fdb\u7a0b\uff0c\u8fd9\u4e2a\u4fe1\u53f7\u7528\u4e8e\u901a\u77e5\u5b83\u91cd\u65b0\u8bfb\u53d6\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n<\/li>\n<li>\n<p>SIGINT \u7a0b\u5e8f\u7ec8\u6b62(interrupt)\u4fe1\u53f7, \u5728\u7528\u6237\u952e\u5165INTR\u5b57\u7b26(\u901a\u5e38\u662fCtrl-C)\u65f6\u53d1\u51fa\uff0c\u7528\u4e8e\u901a\u77e5\u524d\u53f0\u8fdb\u7a0b\u7ec4\u7ec8\u6b62\u8fdb\u7a0b\u3002<\/p>\n<\/li>\n<li>\n<p>SIGQUIT \u548cSIGINT\u7c7b\u4f3c, \u4f46\u7531QUIT\u5b57\u7b26(\u901a\u5e38\u662fCtrl-&#41;\u6765\u63a7\u5236. \u8fdb\u7a0b\u5728\u56e0\u6536\u5230SIGQUIT\u9000\u51fa\u65f6\u4f1a\u4ea7\u751fcore\u6587\u4ef6, \u5728\u8fd9\u4e2a\u610f\u4e49\u4e0a\u7c7b\u4f3c\u4e8e\u4e00\u4e2a\u7a0b\u5e8f\u9519\u8bef\u4fe1\u53f7\u3002<\/p>\n<\/li>\n<li>\n<p>SIGILL \u6267\u884c\u4e86\u975e\u6cd5\u6307\u4ee4. \u901a\u5e38\u662f\u56e0\u4e3a\u53ef\u6267\u884c\u6587\u4ef6\u672c\u8eab\u51fa\u73b0\u9519\u8bef, \u6216\u8005\u8bd5\u56fe\u6267\u884c\u6570\u636e\u6bb5. \u5806\u6808\u6ea2\u51fa\u65f6\u4e5f\u6709\u53ef\u80fd\u4ea7\u751f\u8fd9\u4e2a\u4fe1\u53f7\u3002<\/p>\n<\/li>\n<li>\n<p>SIGTRAP \u7531\u65ad\u70b9\u6307\u4ee4\u6216\u5176\u5b83trap\u6307\u4ee4\u4ea7\u751f. \u7531debugger\u4f7f\u7528\u3002<\/p>\n<\/li>\n<li>\n<p>SIGABRT \u8c03\u7528abort\u51fd\u6570\u751f\u6210\u7684\u4fe1\u53f7\u3002<\/p>\n<\/li>\n<li>\n<p>SIGBUS \u975e\u6cd5\u5730\u5740, \u5305\u62ec\u5185\u5b58\u5730\u5740\u5bf9\u9f50(alignment)\u51fa\u9519\u3002\u6bd4\u5982\u8bbf\u95ee\u4e00\u4e2a\u56db\u4e2a\u5b57\u957f\u7684\u6574\u6570, \u4f46\u5176\u5730\u5740\u4e0d\u662f4\u7684\u500d\u6570\u3002\u5b83\u4e0eSIGSEGV\u7684\u533a\u522b\u5728\u4e8e\u540e\u8005\u662f\u7531\u4e8e\u5bf9\u5408\u6cd5\u5b58\u50a8\u5730\u5740\u7684\u975e\u6cd5\u8bbf\u95ee\u89e6\u53d1\u7684(\u5982\u8bbf\u95ee\u4e0d\u5c5e\u4e8e\u81ea\u5df1\u5b58\u50a8\u7a7a\u95f4\u6216\u53ea\u8bfb\u5b58\u50a8\u7a7a\u95f4)\u3002<\/p>\n<\/li>\n<li>\n<p>SIGFPE \u5728\u53d1\u751f\u81f4\u547d\u7684\u7b97\u672f\u8fd0\u7b97\u9519\u8bef\u65f6\u53d1\u51fa. \u4e0d\u4ec5\u5305\u62ec\u6d6e\u70b9\u8fd0\u7b97\u9519\u8bef, \u8fd8\u5305\u62ec\u6ea2\u51fa\u53ca\u9664\u6570\u4e3a0\u7b49\u5176\u5b83\u6240\u6709\u7684\u7b97\u672f\u7684\u9519\u8bef\u3002<\/p>\n<\/li>\n<li>\n<p>SIGKILL \u7528\u6765\u7acb\u5373\u7ed3\u675f\u7a0b\u5e8f\u7684\u8fd0\u884c. \u672c\u4fe1\u53f7\u4e0d\u80fd\u88ab\u963b\u585e\u3001\u5904\u7406\u548c\u5ffd\u7565\u3002\u5982\u679c\u7ba1\u7406\u5458\u53d1\u73b0\u67d0\u4e2a\u8fdb\u7a0b\u7ec8\u6b62\u4e0d\u4e86\uff0c\u53ef\u5c1d\u8bd5\u53d1\u9001\u8fd9\u4e2a\u4fe1\u53f7\u3002<\/p>\n<\/li>\n<li>\n<p>SIGUSR1 \u7559\u7ed9\u7528\u6237\u4f7f\u7528<\/p>\n<\/li>\n<li>\n<p>SIGSEGV \u8bd5\u56fe\u8bbf\u95ee\u672a\u5206\u914d\u7ed9\u81ea\u5df1\u7684\u5185\u5b58, \u6216\u8bd5\u56fe\u5f80\u6ca1\u6709\u5199\u6743\u9650\u7684\u5185\u5b58\u5730\u5740\u5199\u6570\u636e.<\/p>\n<\/li>\n<li>\n<p>SIGUSR2 \u7559\u7ed9\u7528\u6237\u4f7f\u7528<\/p>\n<\/li>\n<li>\n<p>SIGPIPE \u7ba1\u9053\u7834\u88c2\u3002\u8fd9\u4e2a\u4fe1\u53f7\u901a\u5e38\u5728\u8fdb\u7a0b\u95f4\u901a\u4fe1\u4ea7\u751f\uff0c\u6bd4\u5982\u91c7\u7528FIFO(\u7ba1\u9053)\u901a\u4fe1\u7684\u4e24\u4e2a\u8fdb\u7a0b\uff0c\u8bfb\u7ba1\u9053\u6ca1\u6253\u5f00\u6216\u8005\u610f\u5916\u7ec8\u6b62\u5c31\u5f80\u7ba1\u9053\u5199\uff0c\u5199\u8fdb\u7a0b\u4f1a\u6536\u5230SIGPIPE\u4fe1\u53f7\u3002\u6b64\u5916\u7528Socket\u901a\u4fe1\u7684\u4e24\u4e2a\u8fdb\u7a0b\uff0c\u5199\u8fdb\u7a0b\u5728\u5199Socket\u7684\u65f6\u5019\uff0c\u8bfb\u8fdb\u7a0b\u5df2\u7ecf\u7ec8\u6b62\u3002<\/p>\n<\/li>\n<li>\n<p>SIGALRM \u65f6\u949f\u5b9a\u65f6\u4fe1\u53f7, \u8ba1\u7b97\u7684\u662f\u5b9e\u9645\u7684\u65f6\u95f4\u6216\u65f6\u949f\u65f6\u95f4. alarm\u51fd\u6570\u4f7f\u7528\u8be5\u4fe1\u53f7.<\/p>\n<\/li>\n<li>\n<p>SIGTERM \u7a0b\u5e8f\u7ed3\u675f(terminate)\u4fe1\u53f7, \u4e0eSIGKILL\u4e0d\u540c\u7684\u662f\u8be5\u4fe1\u53f7\u53ef\u4ee5\u88ab\u963b\u585e\u548c\u5904\u7406\u3002\u901a\u5e38\u7528\u6765\u8981\u6c42\u7a0b\u5e8f\u81ea\u5df1\u6b63\u5e38\u9000\u51fa\uff0cshell\u547d\u4ee4kill\u7f3a\u7701\u4ea7\u751f\u8fd9\u4e2a\u4fe1\u53f7\u3002\u5982\u679c\u8fdb\u7a0b\u7ec8\u6b62\u4e0d\u4e86\uff0c\u6211\u4eec\u624d\u4f1a\u5c1d\u8bd5SIGKILL\u3002<\/p>\n<\/li>\n<li>\n<p>SIGCHLD \u5b50\u8fdb\u7a0b\u7ed3\u675f\u65f6, \u7236\u8fdb\u7a0b\u4f1a\u6536\u5230\u8fd9\u4e2a\u4fe1\u53f7\u3002\u5982\u679c\u7236\u8fdb\u7a0b\u6ca1\u6709\u5904\u7406\u8fd9\u4e2a\u4fe1\u53f7\uff0c\u4e5f\u6ca1\u6709\u7b49\u5f85(wait)\u5b50\u8fdb\u7a0b\uff0c\u5b50\u8fdb\u7a0b\u867d\u7136\u7ec8\u6b62\uff0c\u4f46\u662f\u8fd8\u4f1a\u5728\u5185\u6838\u8fdb\u7a0b\u8868\u4e2d\u5360\u6709\u8868\u9879\uff0c\u8fd9\u65f6\u7684\u5b50\u8fdb\u7a0b\u79f0\u4e3a\u50f5\u5c38\u8fdb\u7a0b\u3002\u8fd9\u79cd\u60c5 \u51b5\u6211\u4eec\u5e94\u8be5\u907f\u514d(\u7236\u8fdb\u7a0b\u6216\u8005\u5ffd\u7565SIGCHILD\u4fe1\u53f7\uff0c\u6216\u8005\u6355\u6349\u5b83\uff0c\u6216\u8005wait\u5b83\u6d3e\u751f\u7684\u5b50\u8fdb\u7a0b\uff0c\u6216\u8005\u7236\u8fdb\u7a0b\u5148\u7ec8\u6b62\uff0c\u8fd9\u65f6\u5b50\u8fdb\u7a0b\u7684\u7ec8\u6b62\u81ea\u52a8\u7531init\u8fdb\u7a0b \u6765\u63a5\u7ba1)\u3002<\/p>\n<\/li>\n<li>\n<p>SIGCONT \u8ba9\u4e00\u4e2a\u505c\u6b62(stopped)\u7684\u8fdb\u7a0b\u7ee7\u7eed\u6267\u884c. \u672c\u4fe1\u53f7\u4e0d\u80fd\u88ab\u963b\u585e. \u53ef\u4ee5\u7528\u4e00\u4e2ahandler\u6765\u8ba9\u7a0b\u5e8f\u5728\u7531stopped\u72b6\u6001\u53d8\u4e3a\u7ee7\u7eed\u6267\u884c\u65f6\u5b8c\u6210\u7279\u5b9a\u7684\u5de5\u4f5c. \u4f8b\u5982, \u91cd\u65b0\u663e\u793a\u63d0\u793a\u7b26<\/p>\n<\/li>\n<li>\n<p>SIGSTOP \u505c\u6b62(stopped)\u8fdb\u7a0b\u7684\u6267\u884c. \u6ce8\u610f\u5b83\u548cterminate\u4ee5\u53cainterrupt\u7684\u533a\u522b:\u8be5\u8fdb\u7a0b\u8fd8\u672a\u7ed3\u675f, \u53ea\u662f\u6682\u505c\u6267\u884c. \u672c\u4fe1\u53f7\u4e0d\u80fd\u88ab\u963b\u585e, \u5904\u7406\u6216\u5ffd\u7565.<\/p>\n<\/li>\n<li>\n<p>SIGTSTP \u505c\u6b62\u8fdb\u7a0b\u7684\u8fd0\u884c, \u4f46\u8be5\u4fe1\u53f7\u53ef\u4ee5\u88ab\u5904\u7406\u548c\u5ffd\u7565. \u7528\u6237\u952e\u5165SUSP\u5b57\u7b26\u65f6(\u901a\u5e38\u662fCtrl-Z)\u53d1\u51fa\u8fd9\u4e2a\u4fe1\u53f7<\/p>\n<\/li>\n<li>\n<p>SIGTTIN \u540e\u53f0\u4f5c\u4e1a\u8981\u4ece\u7528\u6237\u7ec8\u7aef\u8bfb\u6570\u636e\u65f6, \u8be5\u4f5c\u4e1a\u4e2d\u7684\u6240\u6709\u8fdb\u7a0b\u4f1a\u6536\u5230SIGTTIN\u4fe1\u53f7. \u7f3a\u7701\u65f6\u8fd9\u4e9b\u8fdb\u7a0b\u4f1a\u505c\u6b62\u6267\u884c.<\/p>\n<\/li>\n<li>\n<p>SIGTTO \u7c7b\u4f3c\u4e8eSIGTTIN, \u4f46\u5728\u5199\u7ec8\u7aef(\u6216\u4fee\u6539\u7ec8\u7aef\u6a21\u5f0f)\u65f6\u6536\u5230.<\/p>\n<\/li>\n<li>\n<p>SIGURG \u6709\u201d\u7d27\u6025\u201d\u6570\u636e\u6216out-of-band\u6570\u636e\u5230\u8fbesocket\u65f6\u4ea7\u751f.<\/p>\n<\/li>\n<li>\n<p>SIGXCPU \u8d85\u8fc7CPU\u65f6\u95f4\u8d44\u6e90\u9650\u5236. \u8fd9\u4e2a\u9650\u5236\u53ef\u4ee5\u7531getrlimit\/setrlimit\u6765\u8bfb\u53d6\/\u6539\u53d8\u3002<\/p>\n<\/li>\n<li>\n<p>SIGXFSZ \u5f53\u8fdb\u7a0b\u4f01\u56fe\u6269\u5927\u6587\u4ef6\u4ee5\u81f3\u4e8e\u8d85\u8fc7\u6587\u4ef6\u5927\u5c0f\u8d44\u6e90\u9650\u5236\u3002<\/p>\n<\/li>\n<li>\n<p>SIGVTALRM \u865a\u62df\u65f6\u949f\u4fe1\u53f7. \u7c7b\u4f3c\u4e8eSIGALRM, \u4f46\u662f\u8ba1\u7b97\u7684\u662f\u8be5\u8fdb\u7a0b\u5360\u7528\u7684CPU\u65f6\u95f4.<\/p>\n<\/li>\n<li>\n<p>SIGPROF \u7c7b\u4f3c\u4e8eSIGALRM\/SIGVTALRM, \u4f46\u5305\u62ec\u8be5\u8fdb\u7a0b\u7528\u7684CPU\u65f6\u95f4\u4ee5\u53ca\u7cfb\u7edf\u8c03\u7528\u7684\u65f6\u95f4.<\/p>\n<\/li>\n<li>\n<p>SIGWINCH \u7a97\u53e3\u5927\u5c0f\u6539\u53d8\u65f6\u53d1\u51fa.<\/p>\n<\/li>\n<li>\n<p>SIGIO \u6587\u4ef6\u63cf\u8ff0\u7b26\u51c6\u5907\u5c31\u7eea, \u53ef\u4ee5\u5f00\u59cb\u8fdb\u884c\u8f93\u5165\/\u8f93\u51fa\u64cd\u4f5c.<\/p>\n<\/li>\n<li>\n<p>SIGPWR Power failure<\/p>\n<\/li>\n<li>\n<p>SIGSYS \u975e\u6cd5\u7684\u7cfb\u7edf\u8c03\u7528<\/p>\n<\/li>\n<\/ol>\n<h3>6\u3001\u4fe1\u53f7\u7684\u4ea7\u751f<\/h3>\n<ul>\n<li>\u7ec8\u7aef\u6309\u952e\u4ea7\u751f\n<ul>\n<li>Ctrl + c \u2014>   2\uff09SIGINT (\u7ec8\u6b62\/\u4e2d\u65ad) \u201cINT\u201d \u2014 Interrupt<\/li>\n<li>Ctrl + z \u2014> 20\uff09SIGTSTP (\u6682\u505c\/\u505c\u6b62) \u201cT\u201d \u2014 Terminal \u7ec8\u7aef<\/li>\n<li>Ctrl + \\ \u2014>    3\uff09SIGQUIT (\u9000\u51fa)<\/li>\n<\/ul>\n<\/li>\n<li>\u786c\u4ef6\u5f02\u5e38\u4ea7\u751f\u4fe1\u53f7\n<ul>\n<li>\u96640\u64cd\u4f5c \u2014> 8\uff09SIGFPE\uff08\u6d6e\u70b9\u6570\u4f8b\u5916\uff09\u201dF\u201d \u2014 float \u6d6e\u70b9\u6570<\/li>\n<li>\u975e\u6cd5\u8bbf\u95ee\u5185\u5b58 \u2014> 11\uff09SIGSEGV\uff08\u6bb5\u9519\u8bef\uff09<\/li>\n<li>\u603b\u7ebf\u9519\u8bef \u2014> 7\uff09SIGBUS<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>kill\u51fd\u6570\/\u547d\u4ee4\u4ea7\u751f\u4fe1\u53f7<\/p>\n<ul>\n<li>kill -SIGKILL pid<\/li>\n<li>kill\u51fd\u6570<\/li>\n<li>int kill (pid_t pid, int sig);<\/li>\n<li>raise\u51fd\u6570\uff0c\u7ed9\u5f53\u524d\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7<\/li>\n<li>int raise(int sig)<\/li>\n<li>abort\u51fd\u6570\uff0c\u7ed9\u5f53\u524d\u8fdb\u7a0b\u53d1\u9001SIGBRT\u4fe1\u53f7<\/li>\n<li>void abort(void)<\/li>\n<\/ul>\n<pre><code class=\"language-c line-numbers\">#include &lt;stdlib.h&gt;\n#include &lt;signal.h&gt;\n#include &lt;stdio.h&gt;\n#include &lt;unistd.h&gt;\n\nint main(){\n  int ret = kill(getpid(), SIGKILL);\n  if (ret == -1){\n      perror(\"kill error\");\n      exit(1);\n  }\n  printf(\"if i am alived?!\\n\");\n  return 0;\n}\n<\/code><\/pre>\n<p>\u6267\u884c\u7ed3\u679c<\/p>\n<pre><code class=\"language-cmd line-numbers\">Killed\n<\/code><\/pre>\n<p>\u591a\u8fdb\u7a0b\u662f\u6740\u6b7b\u6307\u5b9a\u8fdb\u7a0b<\/p>\n<pre><code class=\"language-c line-numbers\">#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;unistd.h&gt;\n#include &lt;signal.h&gt;\n\nint main(){\n  pid_t kill_pid;\n  int i = 0;\n  for (i; i &lt; 5; i++){\n      pid_t pid = fork();\n      if (i == 2) kill_pid = pid;\n      if (pid &lt; 0){\n          perror(\"fork error\");\n          exit(1);\n      }else if (pid &gt; 0){\n          \/\/ \u7236\u8fdb\u7a0b\n      }else {\n          \/\/ \u5b50\u8fdb\u7a0b\n          break;\n      }\n  }\n  \/\/ \u53ea\u6709\u7236\u8fdb\u7a0b\u80fd\u8fdb\u6765\n  if (i == 5){\n      \/\/ kill\u6307\u5b9a\u8fdb\u7a0bid\uff0c\u4e5f\u53ef\u4ee5\u4f200(\u540c\u4e00\u8fdb\u7a0b\u7ec4\u7684\u6240\u6709\u8fdb\u7a0b)\u3001-1(\u8fdb\u7a0b\u6743\u9650\u4e2d\u7684\u6240\u6709\u8fdb\u7a0b)\u3001&lt;0(\u5bf9\u5e94\u7684\u7ec4)\n      \/\/ kill\u4e2dpid\u4e0ewaitpid\u51fd\u6570\u4e2d\u7684pid\u7c7b\u4f3c\n      kill(kill_pid, SIGKILL);\n  }\n  while(1){\n      sleep(1);\n  }\n  return 0;\n}\n<\/code><\/pre>\n<\/li>\n<li>\u8f6f\u4ef6\u6761\u4ef6\u4ea7\u751f\u4fe1\u53f7\n<ul>\n<li>alarm\u51fd\u6570<\/li>\n<li>\u6bcf\u4e2a\u8fdb\u7a0b\u6709\u4e14\u53ea\u6709\u4e00\u4e2a\u5b9a\u65f6\u5668<\/li>\n<li>unsigned int alarm(unsigned int seconds); \/\/ \u8fd4\u56de0\u6216\u5269\u4f59\u79d2\u6570<\/li>\n<li>alarm\u8fd4\u56de\u7684\u662f\u4e0a\u4e00\u6b21\u5b9a\u65f6\u6240\u5269\u4f59\u7684\u65f6\u95f4\uff0calarm(0)\u53ef\u4ee5\u53d6\u6d88\u95f9\u949f<\/li>\n<li>alarm\u53ea\u80fd\u5b9a\u65f6\u4e00\u6b21\uff0c\u5e76\u4e14\u662f\u79d2\u7ea7\u7cbe\u5ea6\uff0c\u81ea\u7136\u8ba1\u65f6<\/li>\n<\/ul>\n<pre><code class=\"language-c line-numbers\">#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;unistd.h&gt;\n\nint main(){\n  int i = 0;\n  alarm(1);\n  for (i;;i++){\n      printf(\"%d\\n\", i);\n  }\n  return 0;\n}\n<\/code><\/pre>\n<p>time .\/alarm.out \u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u6267\u884c\u6240\u6d88\u8017\u7684\u65f6\u95f4<br \/>\n.\/alarm.out > out \u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6267\u884c\u6b21\u6570\uff0cI\/O\u64cd\u4f5c\u975e\u5e38\u6d88\u8017\u7cfb\u7edf\u8d44\u6e90<\/p>\n<\/li>\n<li>\n<p>setitimer\u51fd\u6570\uff1a\u53ef\u4ee3\u66ffalarm\u51fd\u6570\uff0c\u7cbe\u5ea6\u5fae\u79d2us\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5468\u671f\u5b9a\u65f6<\/p>\n<ul>\n<li>int setitimer(int which, const struct itimerval *new_value, struct itimerval *old_value)<\/li>\n<li>\u53c2\u6570which<\/li>\n<li>ITIMER_REAL\uff1a\u81ea\u7136\u5b9a\u65f6\uff0c\u8ba1\u7b97\u81ea\u7136\u65f6\u95f4\uff0c\u4e0ealarm\u76f8\u540c<\/li>\n<li>ITIMER_VIRTUAL\uff1a\u865a\u62df\u7a7a\u95f4\u8ba1\u65f6\uff0c\u53ea\u8ba1\u7b97\u8fdb\u7a0b\u5360\u7528CPU\u7684\u65f6\u95f4(\u7528\u6237\u7a7a\u95f4)<\/li>\n<li>ITIMER_PROF\uff1a\u8fd0\u884c\u65f6\u8ba1\u65f6\uff0c\u8ba1\u7b97\u5360\u7528cpu\u53ca\u6267\u884c\u7cfb\u7edf\u8c03\u7528\u7684\u65f6\u95f4(\u7528\u6237\u7a7a\u95f4+\u7cfb\u7edf\u7a7a\u95f4)<\/li>\n<li>\u53c2\u6570new_value\uff1a\u5b9a\u65f6\u65f6\u957f<\/li>\n<li>\u53c2\u6570old_vlaue\uff1a\u4e0a\u4e00\u6b21\u5b9a\u65f6\u5269\u4f59\u65f6\u95f4\uff0c\u4e0ealarm\u7684\u8fd4\u56de\u503c\u610f\u4e49\u76f8\u540c<\/li>\n<li>\u8ba1\u65f6\u5f00\u59cb\u65f6\uff0c\u6709\u6548\u6570\u636e\u662fnew_value<\/li>\n<li>it_value\u4e3a\u5ef6\u65f6\u5f00\u59cb\u65f6\u95f4<\/li>\n<li>it_interval\u4e3a\u95f4\u9694\u65f6\u95f4<\/li>\n<li>\u5ef6\u65f6it_value\u65f6\u95f4\uff0c\u53d1\u9001\u4fe1\u53f7\uff0c\u518d\u5c06it_interval\u8d4b\u503c\u7ed9it_value\uff0c\u65f6\u95f4\u5230\u540e\u53d1\u9001\u4fe1\u53f7\uff0c\u91cd\u590d\u6267\u884c<\/li>\n<li>it_value\u4e3a0\u5219\u4e0d\u53d1\u9001\u4fe1\u53f7<\/li>\n<li>it_interval\u4e3a0\uff0c\u5219\u4e0d\u91cd\u590d<\/li>\n<\/ul>\n<pre><code class=\"language-c line-numbers\">struct itimerval{\n  struct timerval it_interval;     \/\/ \u95f4\u9694\u65f6\u95f4\n  struct timerval it_value;        \/\/ \u5ef6\u65f6\u65f6\u95f4\n}\nstruct timerval{\n  time_t      tv_sec;        \/\/ \u79d2\n  suseconds_t tv_usec;       \/\/ \u5fae\u79d2\n}\n<\/code><\/pre>\n<\/li>\n<li>\u4f7f\u7528setitimer\u51fd\u6570\u5b9e\u73b0alarm\u51fd\u6570\u529f\u80fd\n<pre><code class=\"language-c line-numbers\">#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;unistd.h&gt;\n#include &lt;sys\/time.h&gt;\n\nunsigned int my_alarm(unsigned int second){\n  struct itimerval new_value, old_value;\n  new_value.it_interval.tv_sec = 0;\n  new_value.it_interval.tv_usec = 0;\n  new_value.it_value.tv_sec = second;\n  new_value.it_value.tv_usec = 0;\n  int ret = setitimer(ITIMER_REAL, &amp;new_value, &amp;old_value);\n  if (ret == -1){\n      perror(\"setitimer error\");\n      exit(1);\n  }\n  return old_value.it_interval.tv_sec;\n}\n\nint main(){\n  my_alarm(1);\n  int i;\n  for (i = 0; ;i++){\n      printf(\"%d\\n\", i);\n  }\n  return 0;\n}\n<\/code><\/pre>\n<\/li>\n<li>signal\u51fd\u6570\n<ul>\n<li>signal\u51fd\u6570\u53ef\u4ee5\u6355\u6349\u4fe1\u53f7<\/li>\n<li>typedef void (*sighandler_t)(int);<\/li>\n<li>sighandler_t signal(int signum, sighandler_t handler);<\/li>\n<\/ul>\n<pre><code class=\"language-c line-numbers\">#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;unistd.h&gt;\n#include &lt;sys\/time.h&gt;\n#include &lt;signal.h&gt;\n\nunsigned int my_alarm(unsigned int seconds){\n  struct itimerval new_value, old_value;\n  new_value.it_value.tv_sec = seconds;\n  new_value.it_value.tv_usec = 0;\n  new_value.it_interval.tv_sec = 2;\n  new_value.it_interval.tv_usec = 0;\n  int ret = setitimer(ITIMER_REAL, &amp;new_value, &amp;old_value);\n  if (ret == -1){\n      perror(\"setitimer error\");\n      exit(1);\n  }\n  return old_value.it_value.tv_sec;\n}\nvoid func(int sign){\n  printf(\"sign:%d\\n\", sign);\n}\nint main(){\n  my_alarm(1);\n  signal(SIGALRM, func);\n  int i = 0;\n  for(i;;i++){\n      printf(\"%d\\n\", i);\n      sleep(1);\n  }\n  return 0;\n}\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<h3>7\u3001\u4fe1\u53f7\u96c6<\/h3>\n<ul>\n<li>\u4fe1\u53f7\u96c6\u8bbe\u7f6e\u6570\u636e\u7c7b\u578b\uff1asigset_t\n<pre><code class=\"language-c line-numbers\">\/\/ \u6e05\u7a7a\u96c6\u5408\nint sigemptyset(sigset_t *set);\n\/\/ \u586b\u5145\u96c6\u5408\nint sigfillset(sigset_t *set);\n\/\/ \u6dfb\u52a0\u4fe1\u53f7\nint sigaddset(sigset_t *set, int signum);\n\/\/ \u5220\u9664\u4fe1\u53f7\nint sigdelset(sigset_t *set, int signum);\n\/\/ \u4fe1\u53f7\u662f\u5426\u5728\u96c6\u5408\u4e2d\nint sigismember(const sigset_t *set, int signum);\n<\/code><\/pre>\n<\/li>\n<li>\u963b\u585e\u4fe1\u53f7\u96c6\uff08\u4fe1\u53f7\u5c4f\u853d\u5b57\uff09\n<ul>\n<li>sigprocmask\u51fd\u6570<\/li>\n<li>int sigprocmask(int how, const sigset_t *set, sigset_t *oldset);<\/li>\n<li>how\u53c2\u6570\n<ul>\n<li>SIG_BLOCK\uff1a\u5c06\u5f53\u524dset\u505a\u4e3amask\u6dfb\u52a0\u4fe1\u53f7<\/li>\n<li>SIG_UNBLOCK\uff1a\u5c06\u5f53\u524dset\u505a\u4e3amask\u5220\u9664\u4fe1\u53f7<\/li>\n<li>SIG_SETMASK\uff1a\u5c06\u5f53\u524dset\u505a\u4e3a\u4fe1\u53f7\u96c6\u76f4\u63a5\u8986\u76d6<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<pre><code class=\"language-c line-numbers\">#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;signal.h&gt;\n#include &lt;unistd.h&gt;\n\nint main(){\n  \/\/ \u5b9a\u4e49\u4e24\u4e2a\u4fe1\u53f7\u96c6\n  sigset_t set, old_set;\n  \/\/ \u5728set\u4fe1\u53f7\u96c6\u4e2d\u6dfb\u52a0SIGALRM\u4fe1\u53f7\n  int ret = sigaddset(&amp;set, SIGALRM);\n  if (ret == -1){\n      perror(\"sigaddet error\");\n      exit(1);\n  }\n  \/\/ \u5c06\u4fe1\u53f7\u96c6\u6dfb\u52a0\u5230\u963b\u585e\u4fe1\u53f7\u96c6\u4e2d\uff0c\u963b\u585eset\u4e2d\u7684\u4fe1\u53f7\n  ret = sigprocmask(SIG_BLOCK, &amp;set, &amp;old_set);\n  if (ret == -1){\n      perror(\"sigprocmask error\");\n      exit(1);\n  }\n  \/\/ 1\u79d2\u540e\u53d1\u9001SIGALRM\u4fe1\u53f7\uff0c\u8fdb\u7a0b\u65e0\u6cd5\u6b63\u5e38\u63a5\u6536\u5230\u8be5\u4fe1\u53f7\n  alarm(1);\n  int i = 0;\n  while(i++){\n      printf(\"-----------%d\\n\", i);\n      sleep(1);\n  }\n  return 0;\n}\n<\/code><\/pre>\n<\/li>\n<li>\u672a\u51b3\u4fe1\u53f7\u96c6\n<ul>\n<li>int sigpending(sigset_t *set);<\/li>\n<li>\u4f20\u51fa\u53c2\u6570set\uff0c\u53ef\u83b7\u53d6\u672a\u51b3\u4fe1\u53f7\u96c6<\/li>\n<\/ul>\n<pre><code class=\"language-c line-numbers\">#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;signal.h&gt;\n#include &lt;unistd.h&gt;\n\n\/\/ \u6253\u53701~32\u53f7\u4fe1\u53f7\u96c6\u72b6\u6001\nvoid print_sig(sigset_t sigset){\n  int i;\n  for(i=1;i&lt;32;i++){\n      \/\/ \u5faa\u73af\u904d\u5386\u4fe1\u53f7\u96c6\u4e2d\u5404\u4e2a\u4fe1\u53f7\uff0c\u5e76\u4ee50\u30011\u5f62\u5f0f\u8f93\u51fa\n      int ismb = sigismember(&amp;sigset, i);\n      putchar(ismb == 0 ? '0':'1');\n  }\n  putchar('\\n');\n}\n\nint main(){\n  sigset_t mask, set, old_set;\n  \/\/ \u521b\u5efa\u4fe1\u53f7\u5c4f\u853d\u5b57mask\uff0c\u5e76\u5c06\u76f8\u5173\u4fe1\u53f7\u52a0\u5165\u96c6\u5408\n  sigemptyset(&amp;mask);\n  sigaddset(&amp;mask, SIGINT);\n  sigaddset(&amp;mask, SIGTSTP);\n  sigaddset(&amp;mask, SIGQUIT);\n  \/\/ \u5c06mask\u5408\u5e76\u5230\u963b\u585e\u4fe1\u53f7\u96c6\n  sigprocmask(SIG_BLOCK, &amp;mask, &amp;old_set);\n  while(1){\n      \/\/ \u5faa\u73af\u6253\u5370\u672a\u51b3\u4fe1\u53f7\u96c6\uff0c\u88ab\u963b\u585e\u7684\u4fe1\u53f7\u4f1a\u505c\u7559\u5728\u672a\u51b3\u4fe1\u53f7\u96c6\u4e2d\n      sigpending(&amp;set);\n      print_sig(set);\n      sleep(1);\n  }\n  return 0;\n}\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<h3>8\u3001\u4fe1\u53f7\u6355\u6349<\/h3>\n<ul>\n<li>signal\u51fd\u6570\n<ul>\n<li>typedef void (*sighandler_t)(int);<\/li>\n<li>sighandler_t signal(int signum, sighandler_t handler);<\/li>\n<\/ul>\n<pre><code class=\"language-c line-numbers\">#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;signal.h&gt;\n\n\/\/ \u4fe1\u53f7\u6355\u6349\u51fd\u6570\u8fd4\u56de\u503c\u4e3a\u51fd\u6570\u6307\u9488\ntypedef void (*sighandler_t)(int);\nvoid sigcatch(int signal){\n  printf(\"catch signal : %d\\n\", signal);\n}\nint main(){\n  \/\/ \u6355\u6349\u6210\u529f\u8fd4\u56de\u4f20\u5165\u7684\u6355\u6349\u51fd\u6570\u6307\u9488\uff0c\u5931\u8d25\u5219\u8fd4\u56de\u5b8fSIG_ERR\n  sighandler_t handler = signal(SIGINT, sigcatch);\n  if (handler == SIG_ERR){\n      perror(\"signal error\");\n      exit(1);\n  }\n  while(1);\n  return 0;\n}\n<\/code><\/pre>\n<\/li>\n<li>sigaction\u51fd\u6570\n<pre><code class=\"language-c line-numbers\">int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);\nstruct sigaction {\n  void     (*sa_handler)(int);\n  void     (*sa_sigaction)(int, siginfo_t *, void *);\n  sigset_t   sa_mask;    \/\/ \u4fe1\u53f7\u5c4f\u853d\u5b57\uff0c\u5728\u6355\u6349\u51fd\u6570\u6267\u884c\u671f\u95f4\uff0c\u4e34\u65f6\u4ee3\u66ff\u963b\u585e\u4fe1\u53f7\u96c6\n  int        sa_flags;\n  void     (*sa_restorer)(void);\n};\n<\/code><\/pre>\n<pre><code class=\"language-c line-numbers\">#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;unistd.h&gt;\n#include &lt;signal.h&gt;\n\n\/\/ \u4fe1\u53f7\u6355\u6349\u56de\u8c03\u51fd\u6570\nvoid sigcatch(int signal){\n  printf(\"%d signal is catched ...\\n\", signal);\n  sleep(5);\/\/ \u7761\u772010\u79d2\uff0c\u5728\u6b64\u671f\u95f4sigaction\u4e2d\u7684sa_mask\u751f\u6548\n  printf(\"----finish--------------\\n\");\n}\n\nint main(){\n  \/\/ \u5b9a\u4e49\u4e00\u4e2asigaction\u7ed3\u6784\u4f53\n  struct sigaction sa;\n  \/\/ \u91cd\u70b9\u5173\u6ce83\u4e2a\u53d8\u91cf\uff1a1\u3001\u56de\u8c03\u51fd\u6570\n  sa.sa_handler = sigcatch;\n  \/\/ \u91cd\u70b9\u5173\u6ce83\u4e2a\u53d8\u91cf\uff1a2\u3001\u4fe1\u53f7\u96c6\u5408\n  sigemptyset(&amp;sa.sa_mask);\n  sigaddset(&amp;sa.sa_mask, SIGINT);\n  \/\/ \u91cd\u70b9\u5173\u6ce83\u4e2a\u53d8\u91cf\uff1a3\u3001\u6807\u8bb0\u9ed8\u8ba4\u4f200\u5373\u53ef\n  sa.sa_flags = 0;\n  \/\/ \u6355\u6349Ctrl+Z\u4fe1\u53f7\n  int ret = sigaction(SIGTSTP, &amp;sa, NULL);\n  if (ret == -1){\n      perror(\"sigaction error\");\n      exit(1);\n  }\n  \/\/ \u8fd0\u884c\u540e\uff0cCtrl+Z\u4f1a\u88ab\u6355\u6349\uff0c\u5176\u4ed6\u4fe1\u53f7\u6267\u884c\u9ed8\u8ba4\u884c\u4e3a\n  \/\/ Ctrl+Z\u88ab\u6355\u6349sigcatch\u51fd\u6570\u6267\u884c\u671f\u95f4\uff0cCtrl+C\u4f1a\u88ab\u963b\u585e\uff0cCtrl+Z\u88ab\u963b\u585e\u653e\u8fdb\u672a\u51b3\u4fe1\u53f7\u96c6\uff0c\u6355\u6349\u51fd\u6570\u7ed3\u675f\u540e\u7acb\u5373\u89e6\u53d1\n  while(1);\n  return 0;\n}\n<\/code><\/pre>\n<\/li>\n<li>\u4fe1\u53f7\u6355\u6349\u7279\u6027\n<ul>\n<li>\u8fdb\u7a0b\u6b63\u5e38\u8fd0\u884c\u65f6\uff0c\u9ed8\u8ba4pcb\u6709\u4e00\u4e2a\u4fe1\u53f7\u5c4f\u853d\u5b57\uff0c\u5b83\u51b3\u5b9a\u4e86\u8fdb\u7a0b\u5c4f\u853d\u54ea\u4e9b\u4fe1\u53f7\uff0c\u5f53\u67d0\u4e2a\u4fe1\u53f7\u88ab\u6355\u6349\u8fdb\u5165\u6355\u6349\u51fd\u6570\u65f6\uff0c\u4fe1\u53f7\u5c4f\u853d\u6682\u65f6\u7531sa_mask\u6765\u6307\u5b9a\uff0c\u51fd\u6570\u6267\u884c\u7ed3\u675f\u540e\uff0c\u6062\u590d\u4e3a\u539f\u4fe1\u53f7\u5c4f\u853d\u5b57\uff1b<\/li>\n<li>\u51fd\u6570\u6267\u884c\u671f\u95f4\uff0c\u88ab\u6355\u6349\u7684\u4fe1\u53f7\u81ea\u52a8\u5c4f\u853d\uff08\u5904\u4e8e\u963b\u585e\u72b6\u6001\uff0c\u51fd\u6570\u6267\u884c\u7ed3\u675f\u540e\u4f1a\u88ab\u7acb\u5373\u6267\u884c\uff09\uff1b<\/li>\n<li>\u963b\u585e\u7684\u5e38\u89c4\u4fe1\u53f7\u4e0d\u652f\u6301\u6392\u961f\uff0c\u4ea7\u751f\u591a\u6b21\u53ea\u8bb0\u5f55\u4e00\u6b21\uff08\u540e32\u4e2a\u5b9e\u65f6\u4fe1\u53f7\u652f\u6301\u6392\u961f\uff09<\/li>\n<\/ul>\n<\/li>\n<li>\u5185\u6838\u5b9e\u73b0\u4fe1\u53f7\u6355\u6349\u7684\u8fc7\u7a0b\n<ol>\n<li>\u6267\u884c\u4e3b\u63a7\u5236\u6d41\u7a0b\u65f6\uff0c\u56e0\u4e3a\u4e2d\u65ad\u6216\u5f02\u5e38\uff0c\u8fdb\u884c\u5185\u6838\uff1b<\/li>\n<li>\u5185\u6838\u5904\u7406\u5f53\u524d\u8fdb\u7a0b\u53ef\u4ee5\u9012\u9001\u7684\u4fe1\u53f7\u3002<\/li>\n<li>\u6267\u884c\u9ed8\u8ba4\u52a8\u4f5c\u56de\u7528\u6237\u6a21\u5f0f\uff0c\u5982\u679c\u88ab\u6355\u6349\u6267\u884c\u7528\u6237\u6355\u6349\u51fd\u6570\uff1b<\/li>\n<li>\u6267\u884c\u7528\u6237\u6355\u6349\u51fd\u6570\uff0c\u7ed3\u675f\u540e\u6267\u884c\u7279\u6b8a\u7684\u7cfb\u7edf\u8c03\u7528sigreturng\u56de\u5230\u5185\u6838\uff1b<\/li>\n<li>\u5185\u6838\u8fd4\u56de\u7528\u6237\u6a21\u5f0f\uff0c\u4ece\u4e0a\u6b21\u88ab\u4e2d\u65ad\u7684\u5730\u65b9\u7ee7\u7eed\u5411\u4e0b\u6267\u884c\uff1b<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u4fe1\u53f7\u7684\u6982\u5ff5\uff1a\u5171\u6027 \u7b80\u5355 \u4e0d\u80fd\u643a\u5e26\u5927\u91cf\u4fe1\u606f \u6ee1\u8db3\u67d0\u4e2a\u7279\u8bbe\u6761\u4ef6 2\u3001\u4e0e\u4fe1\u53f7\u76f8\u5173\u7684\u4e8b\u4ef6\u4e0e\u72b6\u6001 \u952e\u76d8\u4ea7\u751f\uff1aCtrl+C\u3001Ctrl+Z\u7b49\uff1b \u7cfb\u7edf\u8c03\u7528\uff1akill\u3001raise\u3001abort \u8f6f\u4ef6\u6761\u4ef6\uff1a\u5b9a\u65f6\u5668 \u786c\u4ef6\u5f02\u5e38\uff1a\u975e\u6cd5\u8bbf\u95ee\u3001\u96640\u7b49\uff1b \u547d\u4ee4\u4ea7\u751f\uff1akill\u547d\u4ee4 3\u3001\u4fe1\u53f7\u7684\u5904\u7406\u65b9\u5f0f \u6267\u884c\u9ed8\u8ba4\u52a8\u4f5c Term\uff1a\u7ec8\u6b62\u8fdb\u7a0b Ign\uff1a\u5ffd\u7565\u4fe1\u53f7 Core\uff1a\u7ec8\u6b62\u8fdb\u7a0b\uff0c\u751f\u6210Core\u6587\u4ef6\uff08\u67e5\u770b\u6b7b\u4ea1\u539f\u56e0\uff0c\u7528\u4e8egdb\u8c03\u8bd5\uff09 Stop\uff1a\u505c\u6b62\uff08\u6682\u505c\uff09\u8fdb\u7a0b Cont\uff1a\u7ee7\u7eed\u505c\u6b62\uff08\u6682\u505c\uff09\u8fdb\u7a0b \u5ffd\u7565\uff08\u4e22\u5f03\uff09 \u6355\u6349\uff08\u8c03\u7528\u6237\u5904\u7406\u51fd\u6570\uff09 4\u3001\u4fe1\u53f7\u56db\u8981\u7d20 \u7f16\u53f7 \u540d\u79f0 \u4e8b\u4ef6 \u9ed8\u8ba4\u5904\u7406\u52a8\u4f5c 5\u3001\u5e38\u7528\u4fe1\u53f7 ~$ kill -l 1) SIGHUP 2) SIGINT 3) SIGQUIT 4) SIGILL 5) SIGTRAP 6) SIGABRT 7) SIGBUS 8) SIGFPE 9) SIGKILL 10) SIGUSR1 11) SIGSEGV 12) SIGUSR2 13) SIGPIPE 14) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[310,315],"class_list":["post-1807","post","type-post","status-publish","format-standard","hentry","category-cpp","tag-linux","tag-315"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1807","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/comments?post=1807"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1807\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=1807"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=1807"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=1807"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}