{"id":789,"date":"2024-09-11T21:14:05","date_gmt":"2024-09-11T13:14:05","guid":{"rendered":"http:\/\/114.55.108.251\/?p=789"},"modified":"2025-03-04T09:46:06","modified_gmt":"2025-03-04T01:46:06","slug":"linux%e7%b3%bb%e7%bb%9f%e7%bc%96%e7%a8%8b-part8%ef%bc%88%e5%ae%88%e6%8a%a4%e8%bf%9b%e7%a8%8b%e3%80%81%e7%ba%bf%e7%a8%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/guapicoding.com\/?p=789","title":{"rendered":"Linux\u7cfb\u7edf\u7f16\u7a0b Part8\uff08\u5b88\u62a4\u8fdb\u7a0b\u3001\u7ebf\u7a0b\uff09"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u8fdb\u7a0b\u7ec4\u548c\u4f1a\u8bdd<\/h2>\n\n\n\n<p>\u8fdb\u7a0b\u7ec4\u662f\u591a\u4e2a\u8fdb\u7a0b\u7684\u96c6\u5408\uff0c\u800c\u4f1a\u8bdd\u662f\u591a\u4e2a\u8fdb\u7a0b\u7ec4\u7684\u96c6\u5408<\/p>\n\n\n\n<p>\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u5c5e\u4e8e\u4e00\u4e2a\u8fdb\u7a0b\u7ec4\uff0c\u5f53\u7236\u8fdb\u7a0b\u521b\u5efa\u5b50\u8fdb\u7a0b\u7684\u65f6\u5019\uff0c\u9ed8\u8ba4\u5b50\u8fdb\u7a0b\u4e0e\u7236\u8fdb\u7a0b\u5c5e\u4e8e\u540c\u4e00\u8fdb\u7a0b\u7ec4<\/p>\n\n\n\n<p>\u8fdb\u7a0b\u7ec4ID = \u7b2c\u4e00\u4e2a\u8fdb\u7a0bID(\u7ec4\u957f\u8fdb\u7a0b)  <\/p>\n\n\n\n<p>\u53ef\u4ee5\u4f7f\u7528<code>kill -SIGKILL-\u8fdb\u7a0b\u7ec4ID<\/code>(\u8d1f\u7684)\u6765\u5c06\u6574\u4e2a\u8fdb\u7a0b\u7ec4\u5185\u7684\u8fdb\u7a0b\u5168\u90e8\u6740\u6b7b<\/p>\n\n\n\n<p>\u53ea\u8981\u8fdb\u7a0b\u7ec4\u4e2d\u6709\u4e00\u4e2a\u8fdb\u7a0b\u5b58\u5728\uff0c\u8fdb\u7a0b\u7ec4\u5c31\u5b58\u5728\uff0c\u4e0e\u7ec4\u957f\u8fdb\u7a0b\u662f\u5426\u7ec8\u6b62\u65e0\u5173 <\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u521b\u5efa\u4f1a\u8bdd<\/h4>\n\n\n\n<p>\u521b\u5efa\u4e00\u4e2a\u4f1a\u8bdd\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b6\u70b9\u6ce8\u610f\u4e8b\u9879\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u521b\u5efa\u4f1a\u8bdd\u7684\u8c03\u7528\u8fdb\u7a0b\u4e0d\u80fd\u662f\u8fdb\u7a0b\u7ec4\u7ec4\u957f\uff0c\u8be5\u8fdb\u7a0b\u53d8\u6210\u65b0\u4f1a\u8bdd\u9996\u8fdb\u7a0b(session header) <\/li>\n\n\n\n<li>\u8be5\u8fdb\u7a0b\u6210\u4e3a\u4e00\u4e2a\u65b0\u8fdb\u7a0b\u7ec4\u7684\u7ec4\u957f\u8fdb\u7a0b<\/li>\n\n\n\n<li>\u9700\u8981\u6709root\u6743\u9650(ubuntu\u4e0d\u9700\u8981)<\/li>\n\n\n\n<li>\u65b0\u4f1a\u8bdd\u4e22\u5f03\u539f\u6709\u7684\u63a7\u5236\u7ec8\u7aef\uff0c\u8be5\u4f1a\u8bdd\u6ca1\u6709\u63a7\u5236\u7ec8\u7aef<\/li>\n\n\n\n<li>\u82e5\u8be5\u8c03\u7528\u8fdb\u7a0b\u662f\u7ec4\u957f\u8fdb\u7a0b\uff0c\u5219\u51fa\u9519\u8fd4\u56de<\/li>\n\n\n\n<li>\u5efa\u7acb\u65b0\u4f1a\u8bdd\u65f6\uff0c\u5148\u8c03\u7528fork\uff0c\u7236\u8fdb\u7a0b\u7ec8\u6b62(\u56e0\u4e3afork\u540e\u7236\u8fdb\u7a0b\u5c31\u6210\u4e3a\u4e86\u7ec4\u957f\uff0c\u800c\u7ec4\u957f\u662f\u4e0d\u80fd\u521b\u5efa\u4f1a\u8bdd\u7684)\uff0c\u5b50\u8fdb\u7a0b\u8c03\u7528setside()<\/li>\n<\/ul>\n\n\n\n<p>\u5f53\u4e00\u4e2a\u8fdb\u7a0b\u521b\u5efa\u4e00\u4e2a\u65b0\u7ebf\u7a0b\u540e\uff0c\u8fdb\u7a0b\u4f1a<strong>\u574d\u7f29<\/strong>\u4e3a\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u901a\u5e38\u6211\u4eec\u79f0\u5176\u4e3a\u4e3b\u7ebf\u7a0b\uff0c\u79f0\u65b0\u521b\u5efa\u7684\u90a3\u4e2a\u7ebf\u7a0b\u4e3a\u5b50\u7ebf\u7a0b<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">getsid\u51fd\u6570<\/h4>\n\n\n\n<p><code>pid_t getsid(pid_t pid);<\/code>  \u83b7\u53d6\u8fdb\u7a0b\u6240\u5c5e\u7684\u4f1a\u8bddID<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">setsid\u51fd\u6570<\/h4>\n\n\n\n<p><code>pid_t setsid(void);<\/code>  \u521b\u5efa\u4e00\u4e2a\u4f1a\u8bdd\uff0c\u5e76\u4ee5\u81ea\u5df1\u7684ID\u8bbe\u7f6e\u8fdb\u7a0b\u7ec4ID\uff0c\u540c\u65f6\u4e5f\u662f\u65b0\u4f1a\u8bdd\u7684ID<\/p>\n\n\n\n<p>\u5373\u8c03\u7528\u4e86<code>setsid<\/code>\u51fd\u6570\u7684\u8fdb\u7a0b\uff0c\u5373\u4f7f\u65b0\u7684\u7ec4\u957f\uff0c\u4e5f\u662f\u65b0\u7684\u4f1a\u957f\uff08PID\u3001\u8fdb\u7a0b\u7ec4ID\u3001\u4f1a\u8bddID \u4e09ID\u5408\u4e00\uff09<\/p>\n\n\n\n<p>ps\uff1a\u6267\u884c<code>ps ajx<\/code> \u547d\u4ee4\u53ef\u663e\u793a\u6240\u6709\u8fdb\u7a0b\u7684PPID\u3001PID\u3001PGID\u548cSID<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b88\u62a4\u8fdb\u7a0b<\/h2>\n\n\n\n<p>\u5373Daemon(\u6076\u9b54)\u8fdb\u7a0b\uff0c\u662fLinux\u4e2d\u7684\u540e\u53f0\u670d\u52a1\u8fdb\u7a0b\uff0c\u901a\u5e38\u72ec\u7acb\u4e8e\u63a7\u5236\u7ec8\u7aef\u5e76\u4e14\u5468\u671f\u6027\u5730\u6267\u884c\u67d0\u79cd\u4efb\u52a1\u6216\u7b49\u5f85\u5904\u7406\u67d0\u4e9b\u53d1\u751f\u7684\u4e8b\u4ef6\uff0c\u547d\u540d\u4e00\u822c\u4ee5d\u7ed3\u5c3e<\/p>\n\n\n\n<p>Linux\u540e\u53f0\u7684\u4e00\u4e9b\u7cfb\u7edf\u670d\u52a1\u8fdb\u7a0b\u6ca1\u6709\u63a7\u5236\u7ec8\u7aef\uff0c\u4e0d\u80fd\u76f4\u63a5\u548c\u7528\u6237\u4ea4\u4e92\uff0c\u4e5f\u4e0d\u53d7\u7528\u6237\u767b\u5f55\u3001\u6ce8\u9500\u7684\u5f71\u54cd\uff0c\u4e00\u76f4\u5728\u8fd0\u884c\u7740\uff0c\u5b83\u4eec\u90fd\u662f\u5b88\u62a4\u8fdb\u7a0b\uff0c\u6bd4\u5982\uff1a\u9884\u8bfb\u5165\u7f13\u8f93\u51fa\u673a\u5236\u7684\u5b9e\u73b0\u3001ftp\u670d\u52a1\u5668\u3001nfs\u670d\u52a1\u5668\u7b49 <\/p>\n\n\n\n<p><br>\u521b\u5efa\u5b88\u62a4\u8fdb\u7a0b\u6700\u5173\u952e\u7684\u4e00\u6b65\u662f\u8c03\u7528<code>setsid<\/code>\u51fd\u6570\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Session\uff0c\u5e76\u6210\u4e3aSession Leader<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u521b\u5efa\u5b88\u62a4\u8fdb\u7a0b\u6b65\u9aa4<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li>fork\u5b50\u8fdb\u7a0b\uff0c\u8ba9\u7236\u8fdb\u7a0b\u7ec8\u6b62\uff08\u56e0\u4e3a\u7236\u8fdb\u7a0b\u662f\u7ec4\u957f\uff0c\u4e0d\u80fd\u8ba9\u4ed6\u53bb\u521b\u5efa\u4f1a\u8bdd\uff09<\/li>\n\n\n\n<li>\u5b50\u8fdb\u7a0b\u8c03\u7528<code>setsid()<\/code>\u51fd\u6570\u521b\u5efa\u65b0\u4f1a\u8bdd<\/li>\n\n\n\n<li>\u901a\u5e38\u6839\u636e\u9700\u8981\uff0c\u901a\u8fc7<code>chdir()<\/code>\u51fd\u6570\u6539\u53d8\u5de5\u4f5c\u76ee\u5f55\u4f4d\u7f6e\uff0c\u9632\u6b62\u76ee\u5f55\u88ab\u5378\u8f7d<\/li>\n\n\n\n<li>\u901a\u5e38\u6839\u636e\u9700\u8981\uff0c\u91cd\u8bbeumask\u6587\u4ef6\u6743\u9650\u63a9\u7801\uff0c\u4ee5\u514d\u5f71\u54cd\u65b0\u6587\u4ef6\u7684\u521b\u5efa\u6743\u9650 022 &#8212; 755 0345 &#8212; 432 r&#8212;wx-w- 422<\/li>\n\n\n\n<li>\u901a\u5e38\u6839\u636e\u9700\u8981\uff0c\u5173\u95ed\u6587\u4ef6\u63cf\u8ff0\u7b26\uff08\u6216\u8005\u91cd\u5b9a\u5411\u5230\/dev\/null\uff09<\/li>\n\n\n\n<li>\u5b88\u62a4\u8fdb\u7a0b\u5177\u4f53\u7684\u4e1a\u52a1\u903b\u8f91 while()<\/li>\n<\/ol>\n\n\n\n<p>\u203b\u7f16\u7a0b\u7ec3\u4e60\uff1a\u521b\u5efa\u5b88\u62a4\u8fdb\u7a0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5f85<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ebf\u7a0b\u6982\u5ff5<\/h2>\n\n\n\n<p>\u5728Linux\u4e2d\uff0c\u7ebf\u7a0b\uff08LWP\uff0cLight Weight Process\uff09\u662f\u8f7b\u91cf\u7ea7\u7684\u8fdb\u7a0b\uff0c\u672c\u8d28\u4e0a\u4ecd\u662f\u8fdb\u7a0b<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fdb\u7a0b\uff1a\u6709\u72ec\u7acb\u7684pcb\uff0c\u6709\u72ec\u7acb\u7684\u5730\u5740\u7a7a\u95f4\uff0c\u662f\u5206\u914d\u8d44\u6e90\u7684\u6700\u5c0f\u5355\u4f4d <\/li>\n\n\n\n<li>\u7ebf\u7a0b\uff1a\u6709\u72ec\u7acb\u7684pcb\uff0c\u6ca1\u6709\u72ec\u7acb\u7684\u5730\u5740\u7a7a\u95f4\uff0c\u53ea\u80fd\u5171\u4eab\u540c\u4e00\u8fdb\u7a0b\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u662fCPU\u6267\u884c\u7684\u6700\u5c0f\u5355\u4f4d <\/li>\n<\/ul>\n\n\n\n<p>ps\uff1a\u867d\u7136\u7ebf\u7a0b\u6709\u81ea\u5df1\u72ec\u7acb\u7684pcb\uff0c\u4f46\u662fpcb\u4e2d\u6307\u5411\u5185\u5b58\u8d44\u6e90\u7684\u4e09\u7ea7\u9875\u8868\u8ddf\u8fdb\u7a0b\u662f\u76f8\u540c\u7684\uff0c\u56e0\u6b64\u7ebf\u7a0b\u6ca1\u6709\u81ea\u5df1\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u53ea\u80fd\u5171\u4eab\u540c\u4e00\u8fdb\u7a0b\u7684\u5185\u5b58\u7a7a\u95f4<\/p>\n\n\n\n<p>\u67e5\u770b\u67d0\u8fdb\u7a0b\u4e0b\u7684\u7ebf\u7a0b\u53f7\uff1a<code>ps -Lf \u8fdb\u7a0bid<\/code>  \uff08\u6ce8\u610f\u67e5\u770b\u7684\u662f\u7ebf\u7a0b\u53f7\uff0c\u4e0d\u662f\u7ebf\u7a0bID\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2024\/10\/\u8fdb\u7a0b\u548c\u7ebf\u7a0b-1024x476.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"476\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2024\/10\/\u8fdb\u7a0b\u548c\u7ebf\u7a0b-1024x476.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-908\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u7ebf\u7a0b\u5171\u4eab<\/h4>\n\n\n\n<p>\u7ebf\u7a0b\u5171\u4eab\u8d44\u6e90\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6587\u4ef6\u63cf\u8ff0\u7b26\u8868<\/li>\n\n\n\n<li>\u6bcf\u79cd\u4fe1\u53f7\u7684\u5904\u7406\u65b9\u5f0f<\/li>\n\n\n\n<li>\u5f53\u524d\u5de5\u4f5c\u76ee\u5f55<\/li>\n\n\n\n<li>\u7528\u6237ID\u548c\u7ec4ID<\/li>\n\n\n\n<li><strong>\u5185\u5b58\u5730\u5740\u7a7a\u95f4<\/strong>\uff08.text\/.data\/.bss\/heap\/\u5171\u4eab\u5e93\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u7ebf\u7a0b\u975e\u5171\u4eab\u8d44\u6e90\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7ebf\u7a0bid<\/li>\n\n\n\n<li>cpu\u73b0\u573a\u548c\u6808\u6307\u9488\uff08\u5185\u6838<strong>\u6808<\/strong>\uff09<\/li>\n\n\n\n<li>\u72ec\u7acb\u7684\u6808\u7a7a\u95f4\uff08\u7528\u6237\u7a7a\u95f4<strong>\u6808<\/strong>\uff09<\/li>\n\n\n\n<li>errno\u53d8\u91cf<\/li>\n\n\n\n<li>\u4fe1\u53f7\u5c4f\u853d\u5b57<\/li>\n\n\n\n<li>\u8c03\u5ea6\u4f18\u5148\u7ea7<\/li>\n<\/ul>\n\n\n\n<p>\u603b\u7ed3\uff1a<strong>\u72ec\u4eab\u6808\u7a7a\u95f4\uff08\u5185\u6838\u6808\u3001\u7528\u6237\u6808\uff09<\/strong>\uff0c<strong>\u5171\u4eab.text\/.data\/.bss\/heap\/\u5171\u4eab\u5e93\uff0c\u5171\u4eab\u5168\u5c40\u53d8\u91cf\uff08errno\u9664\u5916\uff09<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ebf\u7a0b\u63a7\u5236\u539f\u8bed<\/h2>\n\n\n\n<p>\u5f53\u4ee3\u7801\u4e2d\u4f7f\u7528\u4e86<code>pthread<\/code>\uff0c\u5c31\u9700\u8981\u5728makefile\u7684\u76ee\u6807\u89c4\u5219\u4e2d\uff0c\u6dfb\u52a0 <code>-lpthread<\/code>\uff0c\u786e\u4fdd\u5728\u7f16\u8bd1\u548c\u94fe\u63a5\u8fc7\u7a0b\u4e2d\u6b63\u786e\u5730\u94fe\u63a5\u5230<code>pthread<\/code>\u5e93<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">pthread_self\u51fd\u6570<\/h4>\n\n\n\n<p><code>pthread_t pthread_self(void); <\/code>\u83b7\u53d6\u7ebf\u7a0bID\uff0c\u5176\u4f5c\u7528\u5bf9\u5e94\u8fdb\u7a0b\u4e2d\u7684<code>getpid()<\/code>\u51fd\u6570<\/p>\n\n\n\n<p>\u8fd4\u56de\u503c\uff1a\u672c\u7ebf\u7a0bID<\/p>\n\n\n\n<p>ps\uff1a\u7ebf\u7a0bID\u6570\u636e\u7c7b\u578b\u662f\u65e0\u7b26\u53f7\u6574\u578bunsigned long\uff0c\u8f93\u51fa\u683c\u5f0f\u8bf4\u660e\u7b26\u4e3a%lu<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7ebf\u7a0b\u4e2d\u68c0\u67e5\u51fa\u9519\u8fd4\u56de<\/h4>\n\n\n\n<p><code>fprintf(stderr, \"xxx error: %s\\n\", strerror(ret));<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>if(ret != 0) {\n    fprintf(stderr, \"xxx error: %s\\n\", strerror(ret));\n    exit(1);\n}\n<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">pthread_create\u51fd\u6570<\/h4>\n\n\n\n<p><code>int pthread_create(pthread_t *thread, const pthread_attr_t *attr, void <em>(<\/em>start_routine) (void *), void *arg);<\/code> \u521b\u5efa\u4e00\u4e2a\u65b0\u7ebf\u7a0b\uff0c\u5176\u4f5c\u7528\u5bf9\u5e94\u8fdb\u7a0b\u4e2d\u7684<code>fork()<\/code>\u51fd\u6570<\/p>\n\n\n\n<p>\u53c2\u6570\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53c2\u65701\uff1a\u4f20\u51fa\u53c2\u6570\uff0c\u65b0\u521b\u5efa\u7684\u7ebf\u7a0bID<\/li>\n\n\n\n<li>\u53c2\u65702\uff1a\u7ebf\u7a0b\u5c5e\u6027\uff08\u89c1\u6700\u540e\u4e00\u8282\u8bbe\u7f6e\u5206\u79bb\u5c5e\u6027\uff09\uff0c\u53ef\u4ee5\u4f20NULL\u8868\u793a\u4f7f\u7528\u9ed8\u8ba4\u5c5e\u6027<\/li>\n\n\n\n<li>\u53c2\u65703\uff1a\u7ebf\u7a0b\u56de\u8c03\u51fd\u6570\uff0c\u521b\u5efa\u6210\u529f\u540e\uff0c<code>ptherad_create<\/code>\u51fd\u6570\u8fd4\u56de\u65f6\uff0c\u8be5\u51fd\u6570\u4f1a\u88ab\u81ea\u52a8\u8c03\u7528<\/li>\n\n\n\n<li>\u53c2\u65704\uff1a\u53c23\u7684\u53c2\u6570\uff0c\u5982\u679c\u56de\u8c03\u51fd\u6570\u6ca1\u6709\u53c2\u6570\uff0c\u4f20NULL<\/li>\n<\/ul>\n\n\n\n<p>\u8fd4\u56de\u503c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6210\u529f\uff1a0<\/li>\n\n\n\n<li>\u5931\u8d25\uff1aerror<\/li>\n<\/ul>\n\n\n\n<p>\u7f16\u7a0b\u7ec3\u4e60\uff1a<strong>\u5faa\u73af\u521b\u5efa\u591a\u4e2a\u5b50\u7ebf\u7a0b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h>\n#include &lt;stdlib.h>\n#include &lt;string.h>\n#include &lt;fcntl.h>\n#include &lt;unistd.h>\n#include &lt;pthread.h>\n#include &lt;sys\/stat.h>\n#include &lt;sys\/mman.h>\n#include &lt;dirent.h>\n#include &lt;errno.h>\n#include &lt;signal.h>\n\nvoid sys_err(const char *str) {\n    perror(str);\n    exit(1);\n}\n\nvoid *tfn(void *arg) {\n    int i = (int)arg;\n    sleep(i);\n    printf(\"---i am %dth thread: pid = %d, tid = %lu\\n\", i + 1, getpid(), pthread_self());\n    return NULL;\n}\n\nint main(int argc, char *argv&#91;]) {\n    int i, ret;\n    pthread_t tid;\n    for (i = 0; i &lt; 5; i++) {\n        ret = pthread_create(&amp;tid, NULL, tfn, (void *)i); \/\/\u4f20\u53c2\u91c7\u7528\u503c\u4f20\u9012\uff0c\u501f\u52a9\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\n        if (ret != 0) {\n            sys_err(\"pthread create error\");\n        }\n    }\n\n    sleep(i); \/\/\u8ba9\u4e3b\u7ebf\u7a0b\u7761\u7720\uff0c\u9632\u6b62\u76f4\u63a5\u7ec8\u6b62\uff0c\u4e3a\u4e86\u8ba9\u5b50\u7ebf\u7a0b\u6709\u65f6\u95f4\u53bb\u6267\u884c\u56de\u8c03\u51fd\u6570\n\n    printf(\"main : i am man: pid = %d, tid = %lu\\n\", getpid(), pthread_self());\n\n    return 0;\n}\n<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">pthread_exit\u51fd\u6570<\/h4>\n\n\n\n<p><code>void pthread_exit(void *retval);<\/code>  \u9000\u51fa\u5f53\u524d\u7ebf\u7a0b<\/p>\n\n\n\n<p>\u53c2\u6570\uff1a\u9000\u51fa\u503c\uff0c\u65e0\u9000\u51fa\u503c\u65f6\uff0c\u4f20NULL<\/p>\n\n\n\n<p>ps\uff1a<code>exit(0)<\/code>\u8868\u793a\u9000\u51fa\u8fdb\u7a0b\uff0c<code>return<\/code>\u8868\u793a\u8fd4\u56de\u5230\u8c03\u7528\u8005\u90a3\u91cc\u53bb<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">pthread_join\u51fd\u6570<\/h4>\n\n\n\n<p>\u963b\u585e\u7b49\u5f85\u7ebf\u7a0b\u9000\u51fa\uff0c\u83b7\u53d6\u7ebf\u7a0b\u9000\u51fa\u72b6\u6001\uff0c\u5176\u4f5c\u7528\u5bf9\u5e94\u8fdb\u7a0b\u4e2d\u7684<code>waitpid()<\/code>\u51fd\u6570<\/p>\n\n\n\n<p><code>int pthread_join(pthread_t thread, void **retval);<\/code><\/p>\n\n\n\n<p>\u53c2\u6570\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>thread\uff1a\u7ebf\u7a0bID<\/li>\n\n\n\n<li>**retval\uff1a\u4f20\u51fa\u53c2\u6570\uff0c\u88ab\u56de\u6536\u7ebf\u7a0b\u7684\u9000\u51fa\u503c\uff0c\u82e5\u7ebf\u7a0b\u5f02\u5e38\u7ed3\u675f\uff08\u6bd4\u5982detach\u540e\u518djoin\uff09\uff0c\u503c\u4e3a-1\uff08\u6ce8\u610f\u6b64\u53c2\u6570\u662f**\u7c7b\u578b\uff0c\u6bd4\u5982\u4f20\u7684\u662f\u6307\u9488\uff0c\u8fd8\u8981\u5bf9\u6307\u9488\u518d\u53d6\u5730\u5740\uff09<\/li>\n<\/ul>\n\n\n\n<p>ps\uff1a\u5728\u8fdb\u7a0b\u4e2d\uff0c\u662f\u7236\u8fdb\u7a0b\u56de\u6536\u5b50\u8fdb\u7a0b\uff0c\u4f46\u5728\u7ebf\u7a0b\u4e2d\u6ca1\u6709\u8fd9\u4e2a\u6982\u5ff5\uff0c\u56e0\u4e3a\u7ebf\u7a0b\u4e4b\u95f4\u5730\u4f4d\u90fd\u662f\u5e73\u7b49\u7684<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">pthread_detach\u51fd\u6570<\/h4>\n\n\n\n<p>\u5b9e\u73b0\u7ebf\u7a0b\u5206\u79bb\uff0c\u8ba9\u7ebf\u7a0b\u5728\u7ed3\u675f\u540e\u81ea\u52a8\u91ca\u653e\u5176\u8d44\u6e90\uff0c\u800c\u4e0d\u9700\u8981\u8c03\u7528<code>pthread_join()<\/code>\u51fd\u6570\u6765\u56de\u6536\u8fd9\u4e9b\u8d44\u6e90<\/p>\n\n\n\n<p><code>int pthread_detach(pthread_t thread); <\/code> <\/p>\n\n\n\n<h4 class=\"wp-block-heading\">pthread_cancel\u51fd\u6570<\/h4>\n\n\n\n<p>int pthread_cancel(pthread_t thread);  \u6740\u6b7b\u7ebf\u7a0b\uff0c\u5176\u4f5c\u7528\u5bf9\u5e94\u8fdb\u7a0b\u4e2d\u7684<code>kill()<\/code>\u51fd\u6570<\/p>\n\n\n\n<p>\u8fd4\u56de\u503c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6210\u529f\uff1a0<\/li>\n\n\n\n<li>\u5931\u8d25\uff1aerror<\/li>\n<\/ul>\n\n\n\n<p>\u5982\u679c\u5b50\u7ebf\u7a0b\u6ca1\u6709\u5230\u8fbe\u53d6\u6d88\u70b9\uff08\u4fdd\u5b58\u70b9\uff09\uff0c \u90a3\u4e48<code>pthread_cancel<\/code>\u65e0\u6548 <\/p>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u5728\u7a0b\u5e8f\u4e2d\u624b\u52a8\u6dfb\u52a0\u4e00\u4e2a\u53d6\u6d88\u70b9\uff1a<code>pthread_testcancel() <\/code><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u539f\u8bed\u5bf9\u6bd4<\/h4>\n\n\n\n<p>\u7ebf\u7a0b\u63a7\u5236\u539f\u8bed \ud83d\udc49 \u7ebf\u7a0b\u63a7\u5236\u539f\u8bed<\/p>\n\n\n\n<p>pthread_create() \ud83d\udc49 fork();<\/p>\n\n\n\n<p>pthread_self() \ud83d\udc49 getpid();<\/p>\n\n\n\n<p>pthread_exit() \ud83d\udc49 exit(); \/ return<\/p>\n\n\n\n<p>pthread_join() \ud83d\udc49 wait() \/ waitpid()<\/p>\n\n\n\n<p>pthread_cancel() \ud83d\udc49 kill()<\/p>\n\n\n\n<p>pthread_detach()<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ebf\u7a0b\u5c5e\u6027<\/h2>\n\n\n\n<p>\u638c\u63e1\u521b\u5efa\u7ebf\u7a0b\u65f6\u5c31\u8ba9\u5176\u5e26\u4e0a\u5206\u79bb\u5c5e\u6027\uff0c\u5c31\u4e0d\u7528\u4e4b\u540e\u518d\u8c03\u7528<code>detach()<\/code>\u51fd\u6570\u4e86\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>pthread_attr_t attr;<\/code> \u521b\u5efa\u4e00\u4e2a\u7ebf\u7a0b\u5c5e\u6027\u7ed3\u6784\u4f53\u53d8\u91cf<\/li>\n\n\n\n<li><code>pthread_attr_init(&amp;attr);<\/code> \u521d\u59cb\u5316\u7ebf\u7a0b\u5c5e\u6027<\/li>\n\n\n\n<li><code>pthread_attr_setdetachstate(&amp;attr, PTHREAD_CREATE_DETACHED); <\/code>\u8bbe\u7f6e\u7ebf\u7a0b\u5c5e\u6027\u4e3a\u5206\u79bb\u6001<\/li>\n\n\n\n<li><code>pthread_create(&amp;tid, &amp;attr, tfn, NULL);<\/code> \u501f\u52a9\u4fee\u6539\u540e\u7684\u8bbe\u7f6e\u7ebf\u7a0b\u5c5e\u6027\uff0c\u521b\u5efa\u4e3a\u5206\u79bb\u6001\u7684\u65b0\u7ebf\u7a0b<\/li>\n\n\n\n<li><code>pthread_attr_destroy(&amp;attr); <\/code>\u9500\u6bc1\u7ebf\u7a0b\u5c5e\u6027\u6240\u5360\u7528\u7684\u8d44\u6e90<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ebf\u7a0b\u4f7f\u7528\u6ce8\u610f\u4e8b\u9879<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e3b\u7ebf\u7a0b\u9000\u51fa\u5176\u4ed6\u7ebf\u7a0b\u4e0d\u9000\u51fa\uff0c\u4e3b\u7ebf\u7a0b\u5e94\u8c03\u7528<code>pthread_exit<\/code><\/li>\n\n\n\n<li>\u5982\u4f55\u907f\u514d\u50f5\u5c38\u8fdb\u7a0b\uff1a\n<ul class=\"wp-block-list\">\n<li>pthread_join()\u56de\u6536<\/li>\n\n\n\n<li>pthread_detach()\u5206\u79bb<\/li>\n\n\n\n<li>pthread_create()\u65f6\u6307\u5b9a\u5206\u79bb\u5c5e\u6027<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>malloc<\/code>\u548c<code>mmap<\/code>\u7533\u8bf7\u7684\u5185\u5b58\u53ef\u4ee5\u88ab\u5176\u4ed6\u7ebf\u7a0b\u91ca\u653e<\/li>\n\n\n\n<li>\u5e94\u907f\u514d\u5728\u591a\u7ebf\u7a0b\u6a21\u578b\u4e2d\u8c03\u7528<code>fork<\/code>\uff0c\u9664\u975e\u9a6c\u4e0aexec\uff0c\u65b0\u521b\u5efa\u7684\u5b50\u8fdb\u7a0b\u4e2d\u53ea\u6709\u8c03\u7528fork\u7684\u7ebf\u7a0b\u5b58\u5728\uff0c\u5176\u4ed6\u7ebf\u7a0b\u5728\u5b50\u8fdb\u7a0b\u4e2d\u5747<code>pthread_exit<\/code><\/li>\n\n\n\n<li>\u4fe1\u53f7\u7684\u590d\u6742\u8bed\u4e49\u5f88\u96be\u548c\u591a\u7ebf\u7a0b\u5171\u5b58\uff0c\u5e94\u907f\u514d\u5728\u591a\u7ebf\u7a0b\u5f15\u5165\u4fe1\u53f7\u673a\u5236<\/li>\n<\/ol>\n\n\n\n<p> <br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fdb\u7a0b\u7ec4\u548c\u4f1a\u8bdd \u8fdb\u7a0b\u7ec4\u662f\u591a\u4e2a\u8fdb\u7a0b\u7684\u96c6\u5408\uff0c\u800c\u4f1a\u8bdd\u662f\u591a\u4e2a\u8fdb\u7a0b\u7ec4\u7684\u96c6\u5408 \u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u5c5e\u4e8e\u4e00\u4e2a\u8fdb\u7a0b\u7ec4\uff0c\u5f53\u7236\u8fdb\u7a0b\u521b\u5efa\u5b50\u8fdb\u7a0b\u7684 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,10],"tags":[21,34,33],"class_list":{"0":"post-789","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-linux","8":"tag-linux","9":"tag-34","10":"tag-33"},"_links":{"self":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts\/789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=789"}],"version-history":[{"count":42,"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts\/789\/revisions"}],"predecessor-version":[{"id":982,"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts\/789\/revisions\/982"}],"wp:attachment":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}