{"id":150,"date":"2026-03-24T13:42:53","date_gmt":"2026-03-24T05:42:53","guid":{"rendered":"https:\/\/codergodv.xyz\/?p=150"},"modified":"2026-03-24T13:42:54","modified_gmt":"2026-03-24T05:42:54","slug":"linux%e8%bf%9b%e7%a8%8b%e9%97%b4%e9%80%9a%e4%bf%a1","status":"publish","type":"post","link":"https:\/\/codergodv.xyz\/index.php\/2026\/03\/24\/linux%e8%bf%9b%e7%a8%8b%e9%97%b4%e9%80%9a%e4%bf%a1\/","title":{"rendered":"Linux\u8fdb\u7a0b\u95f4\u901a\u4fe1"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u8fdb\u7a0b\u95f4\u901a\u4fe1\u4ecb\u7ecd<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u6982\u5ff5<\/h3>\n\n\n\n<p>\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7b80\u79f0IPC(intetprocess communication)\uff0c\u8fdb\u7a0b\u95f4\u901a\u4fe1\u5c31\u662f\u5728\u4e0d\u540c\u7684\u8fdb\u7a0b\u4e4b\u95f4\u4f20\u64ad\u6216\u4ea4\u6362\u4fe1\u606f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u76ee\u7684<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6570\u636e\u4f20\u8f93\uff1a<\/strong> \u4e00\u4e2a8\u8fdb\u7a0b\u9700\u8981\u5c06\u5b83\u7684\u6570\u636e\u53d1\u9001\u7ed9\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u3002<\/li>\n\n\n\n<li><strong>\u8d44\u6e90\u5171\u4eab\uff1a<\/strong> \u591a\u4e2a\u8fdb\u7a0b\u4e4b\u95f4\u5171\u4eab\u540c\u6837\u7684\u8d44\u6e90\u3002<\/li>\n\n\n\n<li><strong>\u901a\u77e5\u4e8b\u4ef6\uff1a<\/strong> \u4e00\u4e2a\u8fdb\u7a0b\u9700\u8981\u5411\u53e6\u4e00\u4e2a\u6216\u4e00\u7ec4\u8fdb\u7a0b\u53d1\u9001\u6d88\u606f\uff0c\u901a\u77e5\u5b83\uff08\u5b83\u4eec\uff09\u53d1\u751f\u4e86\u67d0\u79cd\u4e8b\u4ef6\uff0c\u6bd4\u5982\u8fdb\u7a0b\u7ec8\u6b62\u65f6\u9700\u8981\u901a\u77e5\u5176\u7236\u8fdb\u7a0b\u3002<\/li>\n\n\n\n<li><strong>\u8fdb\u7a0b\u63a7\u5236\uff1a<\/strong> \u6709\u4e9b\u8fdb\u7a0b\u5e0c\u671b\u5b8c\u5168\u63a7\u5236\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u7684\u6267\u884c\uff08\u5982Debug\u8fdb\u7a0b\uff09\uff0c\u6b64\u65f6\u63a7\u5236\u8fdb\u7a0b\u5e0c\u671b\u80fd\u591f\u62e6\u622a\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u7684\u6240\u6709\u9677\u5165\u4e0e\u5f02\u5e38\uff0c\u5e76\u80fd\u591f\u53ca\u65f6\u77e5\u9053\u5b83\u7684\u72b6\u6001\u6539\u53d8\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u672c\u8d28<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u672c\u8d28\u5c31\u662f\uff0c\u8ba9\u4e0d\u540c\u7684\u8fdb\u7a0b\u770b\u5230\u540c\u4e00\u4efd\u8d44\u6e90\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u7531\u4e8e\u5404\u4e2a\u8fdb\u7a0b\u4e4b\u95f4\u5177\u6709\u72ec\u7acb\u6027\uff0c\u8fd9\u4e2a\u72ec\u7acb\u6027\u4e3b\u8981\u4f53\u73b0\u5728\u6570\u636e\u5c42\u9762\uff0c\u800c\u4ee3\u7801\u903b\u8f91\u5c42\u9762\u53ef\u4ee5\u79c1\u6709\u4e5f\u53ef\u4ee5\u516c\u6709\uff08\u4f8b\u5982\u7236\u5b50\u8fdb\u7a0b\uff09\uff0c\u56e0\u6b64\u5404\u4e2a\u8fdb\u7a0b\u4e4b\u95f4\u8981\u5b9e\u73b0\u901a\u4fe1\u662f\u975e\u5e38\u56f0\u96be\u7684\u3002<\/p>\n\n\n\n<p>\u5404\u4e2a\u8fdb\u7a0b\u4e4b\u95f4\u82e5\u60f3\u5b9e\u73b0\u901a\u4fe1\uff0c\u4e00\u5b9a\u8981\u501f\u52a9\u7b2c\u4e09\u65b9\u8d44\u6e90\uff0c\u8fd9\u4e9b\u5c31\u53ef\u4ee5\u901a\u8fc7\u5411\u8fd9\u4e2a\u7b2c\u4e09\u65b9\u8d44\u6e90\u5199\u5165\u6216\u662f\u8bfb\u53d6\u6570\u636e\uff0c\u8fdb\u800c\u5b9e\u73b0\u8fdb\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u8fd9\u4e2a\u7b2c\u4e09\u65b9\u8d44\u6e90\u5b9e\u9645\u4e0a\u5c31\u662f\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7684\u4e00\u6bb5\u5185\u5b58\u533a\u57df\u3002<img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/bc9e72dfcfca4b328e3477b8a967758f.png\" alt=\"img\"><\/p>\n\n\n\n<p>\u56e0\u6b64\uff0c\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u672c\u8d28\u5c31\u662f\uff0c\u8ba9\u4e0d\u540c\u7684\u8fdb\u7a0b\u770b\u5230\u540c\u4e00\u4efd\u8d44\u6e90\uff08\u5185\u5b58\uff0c\u6587\u4ef6\u5185\u6838\u7f13\u51b2\u7b49\uff09\u3002\u7531\u4e8e\u8fd9\u4efd\u8d44\u6e90\u53ef\u4ee5\u7531\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u4e0d\u540c\u6a21\u5757\u63d0\u4f9b\uff0c\u56e0\u6b64\u51fa\u73b0\u4e86\u4e0d\u540c\u8fdb\u7a0b\u95f4\u7684\u901a\u4fe1\u65b9\u5f0f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u5206\u7c7b<\/h3>\n\n\n\n<p>\u7ba1\u9053<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u533f\u540d\u7ba1\u9053<\/li>\n\n\n\n<li>\u547d\u540d\u7ba1\u9053<\/li>\n<\/ul>\n\n\n\n<p>System V IPC<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>System V \u6d88\u606f\u961f\u5217<\/li>\n\n\n\n<li>System V \u5171\u4eab\u5185\u5b58<\/li>\n\n\n\n<li>System V \u4fe1\u53f7\u91cf<\/li>\n<\/ul>\n\n\n\n<p>POSIX IPC<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6d88\u606f\u961f\u5217<\/li>\n\n\n\n<li>\u5171\u4eab\u5185\u5b58<\/li>\n\n\n\n<li>\u4fe1\u53f7\u91cf<\/li>\n\n\n\n<li>\u4e92\u65a5\u91cf<\/li>\n\n\n\n<li>\u6761\u4ef6\u53d8\u91cf<\/li>\n\n\n\n<li>\u8bfb\u5199\u9501<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ba1\u9053<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4ec0\u4e48\u662f\u7ba1\u9053<\/h3>\n\n\n\n<p>\u7ba1\u9053\u662fUnix\u4e2d\u6700\u53e4\u8001\u7684\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u5f62\u5f0f\uff0c\u6211\u4eec\u628a\u4e00\u4e2a\u8fdb\u7a0b\u8fde\u63a5\u5230\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u7684\u6570\u636e\u6d41\u79f0\u4e3a\u4e00\u4e2a&#8221;\u7ba1\u9053&#8221;\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u7edf\u8ba1\u6211\u4eec\u5f53\u524d\u4e91\u670d\u52a1\u5668\u4e0a\u7684\u767b\u5f55\u7528\u6237\u4e2a\u6570\u3002<img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/image-20231213202750515.png\" alt=\"image-20231213202750515\"><\/p>\n\n\n\n<p>\u5176\u4e2d\uff0cwho\u547d\u4ee4\u548cwc\u547d\u4ee4\u90fd\u662f\u4e24\u4e2a\u7a0b\u5e8f\uff0c\u5f53\u4ed6\u4eec\u8fd0\u884c\u8d77\u6765\u5c31\u53d8\u6210\u4e86\u4e24\u4e2a\u8fdb\u7a0b\uff0cwho\u8fdb\u7a0b\u901a\u8fc7\u6807\u51c6\u8f93\u51fa\u5c06\u6570\u636e\u6253\u5230&#8221;\u7ba1\u9053&#8221;\u5f53\u4e2d\uff0cwc\u8fdb\u7a0b\u518d\u901a\u8fc7\u6807\u51c6\u8f93\u5165\u4ece&#8221;\u7ba1\u9053&#8221;\u5f53\u4e2d\u8bfb\u53d6\u6570\u636e\uff0c\u81f3\u6b64\u4fbf\u5b8c\u6210\u4e86\u6570\u636e\u7684\u4f20\u8f93\uff0c\u8fdb\u800c\u5b8c\u6210\u6570\u636e\u7684\u8fdb\u4e00\u6b65\u52a0\u5de5\u3002<img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16781903995455.png\" alt=\"img\"><\/p>\n\n\n\n<p><strong>\u6ce8\u660e\uff1a<\/strong> who\u547d\u4ee4\u7528\u4e8e\u67e5\u770b\u5f53\u524d\u4e91\u670d\u52a1\u5668\u7684\u767b\u5f55\u7528\u6237\uff08\u4e00\u884c\u663e\u793a\u4e00\u4e2a\u7528\u6237\uff09\uff0cwc -l\u7528\u4e8e\u7edf\u8ba1\u5f53\u524d\u7684\u884c\u6570\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u533f\u540d\u7ba1\u9053<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u533f\u540d\u7ba1\u9053\u7684\u539f\u7406<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u533f\u540d\u7ba1\u9053\u7528\u4e8e\u8fdb\u7a0b\u95f4\u901a\u4fe1\uff0c\u4e14\u4ec5\u9650\u4e8e\u672c\u5730\u7236\u5b50\u8fdb\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u672c\u8d28\u5c31\u662f\uff0c\u8ba9\u4e0d\u540c\u7684\u8fdb\u7a0b\u770b\u5230\u540c\u4e00\u4efd\u8d44\u6e90\uff0c\u4f7f\u7528\u533f\u540d\u7ba1\u9053\u5b9e\u73b0\u7236\u5b50\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u539f\u7406\u5c31\u662f\uff0c\u8ba9\u4e24\u4e2a\u7236\u5b50\u8fdb\u7a0b\u5148\u770b\u5230\u540c\u4e00\u4efd\u88ab\u6253\u5f00\u7684\u6587\u4ef6\u8d44\u6e90\uff0c\u7136\u540e\u7236\u5b50\u8fdb\u7a0b\u5c31\u53ef\u4ee5\u5bf9\u8be5\u6587\u4ef6\u8fdb\u884c\u5199\u5165\u6216\u662f\u8bfb\u53d6\u64cd\u4f5c\uff0c\u8fdb\u800c\u5b9e\u73b0\u7236\u5b50\u8fdb\u7a0b\u95f4\u901a\u4fe1\u3002<img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/image-20231213231838064.png\" alt=\"image-20231213231838064\"><\/p>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u91cc\u7236\u5b50\u8fdb\u7a0b\u770b\u5230\u7684\u540c\u4e00\u4efd\u6587\u4ef6\u8d44\u6e90\u662f\u7531\u64cd\u4f5c\u7cfb\u7edf\u6765\u7ef4\u62a4\u7684\uff0c\u6240\u4ee5\u5f53\u7236\u5b50\u8fdb\u7a0b\u5bf9\u8be5\u6587\u4ef6\u8fdb\u884c\u5199\u5165\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u8be5\u6587\u4ef6\u7f13\u51b2\u533a\u5f53\u4e2d\u7684\u6570\u636e\u5e76\u4e0d\u4f1a\u8fdb\u884c\u5199\u65f6\u62f7\u8d1d\u3002<\/li>\n\n\n\n<li>\u7ba1\u9053\u867d\u7136\u7528\u7684\u662f\u6587\u4ef6\u7684\u65b9\u6848\uff0c\u4f46\u64cd\u4f5c\u7cfb\u7edf\u4e00\u5b9a\u4e0d\u4f1a\u628a\u8fdb\u7a0b\u8fdb\u884c\u901a\u4fe1\u7684\u6570\u636e\u5237\u65b0\u5230\u78c1\u76d8\u5f53\u4e2d\uff0c\u56e0\u4e3a\u8fd9\u6837\u505a\u6709IO\u53c2\u4e0e\u4f1a\u964d\u4f4e\u6548\u7387\uff0c\u800c\u4e14\u4e5f\u6ca1\u6709\u5fc5\u8981\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u8fd9\u79cd\u6587\u4ef6\u662f\u4e00\u6279\u4e0d\u4f1a\u628a\u6570\u636e\u5199\u5230\u78c1\u76d8\u5f53\u4e2d\u7684\u6587\u4ef6\uff0c\u6362\u53e5\u8bdd\u8bf4\uff0c\u78c1\u76d8\u6587\u4ef6\u548c\u5185\u5b58\u6587\u4ef6\u4e0d\u4e00\u5b9a\u662f\u4e00\u4e00\u5bf9\u5e94\u7684\uff0c\u6709\u4e9b\u6587\u4ef6\u53ea\u4f1a\u5728\u5185\u5b58\u5f53\u4e2d\u5b58\u5728\uff0c\u800c\u4e0d\u4f1a\u5728\u78c1\u76d8\u5f53\u4e2d\u5b58\u5728\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">pipe\u51fd\u6570<\/h4>\n\n\n\n<p>pipe\u51fd\u6570\u7528\u4e8e\u521b\u5efa\u533f\u540d\u7ba1\u9053\uff0cpipe\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int pipe(int pipefd&#91;2])<\/code><\/pre>\n\n\n\n<p>pipe\u51fd\u6570\u7684\u53c2\u6570\u662f\u4e00\u4e2a\u8f93\u51fa\u578b\u53c2\u6570\uff0c\u6570\u7ec4pipefd\u7528\u4e8e\u8fd4\u56de\u4e24\u4e2a\u6307\u5411\u7ba1\u9053\u8bfb\u7aef\u548c\u5199\u7aef\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6570\u7ec4\u5143\u7d20<\/th><th>\u542b\u4e49<\/th><\/tr><\/thead><tbody><tr><td>pipefd[0]<\/td><td>\u7ba1\u9053\u8bfb\u7aef\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26<\/td><\/tr><tr><td>pipefd[1]<\/td><td>\u7ba1\u9053\u5199\u7aef\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>pipe\u51fd\u6570\u8c03\u7528\u6210\u529f\u65f6\u8fd4\u56de0\uff0c\u8c03\u7528\u5931\u8d25\u65f6\u8fd4\u56de-1\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u533f\u540d\u7ba1\u9053\u4f7f\u7528\u6b65\u9aa4<\/h4>\n\n\n\n<p>\u5728\u521b\u5efa\u533f\u540d\u7ba1\u9053\u5b9e\u73b0\u7236\u5b50\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u9700\u8981pipe\u51fd\u6570\u548cfork\u51fd\u6570\u642d\u914d\u4f7f\u7528\uff0c\u5177\u4f53\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7236\u8fdb\u7a0b\u8c03\u7528pipe\u51fd\u6570\u521b\u5efa\u7ba1\u9053\u3002<img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167820522103717.png\" alt=\"img\"><\/li>\n\n\n\n<li>\u7236\u8fdb\u7a0b\u521b\u5efa\u5b50\u8fdb\u7a0b\u3002 <img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167820527484520.png\" alt=\"img\"><\/li>\n\n\n\n<li>\u7236\u8fdb\u7a0b\u5173\u95ed\u5199\u7aef\uff0c\u5b50\u8fdb\u7a0b\u5173\u95ed\u8bfb\u7aef\u3002 <img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167820545612323.png\" alt=\"img\"><\/li>\n<\/ol>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7ba1\u9053\u53ea\u80fd\u591f\u8fdb\u884c\u5355\u5411\u901a\u4fe1\uff0c\u56e0\u6b64\u5f53\u7236\u8fdb\u7a0b\u521b\u5efa\u5b8c\u5b50\u8fdb\u7a0b\u540e\uff0c\u9700\u8981\u786e\u5b9a\u7236\u5b50\u8fdb\u7a0b\u8c01\u8bfb\u8c01\u5199\uff0c\u7136\u540e\u5173\u95ed\u76f8\u5e94\u7684\u8bfb\u5199\u7aef\u3002<\/li>\n\n\n\n<li>\u4ece\u7ba1\u9053\u5199\u7aef\u5199\u5165\u7684\u6570\u636e\u4f1a\u88ab\u5185\u6838\u7f13\u51b2\uff0c\u76f4\u5230\u4ece\u7ba1\u9053\u7684\u8bfb\u7aef\u88ab\u8bfb\u53d6\u3002<\/li>\n<\/ol>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6211\u4eec\u53ef\u4ee5\u7ad9\u5728\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u89d2\u5ea6\u518d\u6765\u770b\u770b\u8fd9\u4e09\u4e2a\u6b65\u9aa4\uff1a<\/p>\n<\/blockquote>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7236\u8fdb\u7a0b\u8c03\u7528pipe\u51fd\u6570\u521b\u5efa\u7ba1\u9053\u3002 <img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167820585102226.png\" alt=\"img\"><\/li>\n\n\n\n<li>\u7236\u8fdb\u7a0b\u521b\u5efa\u5b50\u8fdb\u7a0b\u3002 <img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167820600738729.png\" alt=\"img\"><\/li>\n\n\n\n<li>\u7236\u8fdb\u7a0b\u5173\u95ed\u5199\u7aef\uff0c\u5b50\u8fdb\u7a0b\u5173\u95ed\u8bfb\u7aef\u3002 <img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167820604655932.png\" alt=\"img\"><\/li>\n<\/ol>\n\n\n\n<p>\u4f8b\u5982\uff0c\u5728\u4ee5\u4e0b\u4ee3\u7801\u5f53\u4e2d\uff0c\u5b50\u8fdb\u7a0b\u5411\u533f\u540d\u7ba1\u9053\u5f53\u4e2d\u5199\u516510\u884c\u6570\u636e\uff0c\u7236\u8fdb\u7a0b\u4ece\u533f\u540d\u7ba1\u9053\u5f53\u4e2d\u5c06\u6570\u636e\u8bfb\u51fa\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n#include &lt;unistd.h&gt;\n#include &lt;string.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;sys\/types.h&gt;\n#include &lt;sys\/wait.h&gt;\n\nint main()\n{\n    int fd&#91;2] = {0};\n    if (pipe(fd) &lt; 0)\n    {\n        perror(\"pipe is fail!\");\n        return 1;\n    }\n    pid_t id = fork();\n    if (0 == id)\n    {\n        \/\/\u5b50\u8fdb\u7a0b\u5173\u95ed\u8bfb\u7aef\n        close(fd&#91;0]);\n        \/\/\u5b50\u8fdb\u7a0b\u5411\u7ba1\u9053\u4e2d\u5199\u5165\u6570\u636e\n        const char* msg = \"hello father,I am child...\";\n        int count = 10;\n        while (count--)\n        {\n            write(fd&#91;1], msg, strlen(msg));\n            sleep(1);\n        }\n        \/\/\u5b50\u8fdb\u7a0b\u5199\u5165\u5b8c\u6bd5\u5173\u95ed\u6587\u4ef6\n        close (fd&#91;1]);\n        exit(0);\n    }\n    close(fd&#91;1]);\n    \/\/\u7236\u8fdb\u7a0b\u4ece\u7ba1\u9053\u4e2d\u8bfb\u53d6\u6570\u636e\n    char buff&#91;64];\n    while (1)\n    {\n       ssize_t s = read(fd&#91;0], buff, sizeof(buff));\n       if (s &gt; 0)\n       {\n           buff&#91;s] = '\\0';\n           printf(\"child send to father:%s\\n\", buff);\n       }    \n       else if (0 == s)\n       {\n           printf(\"read file end\\n\");\n           break;\n       }\n       else\n       {\n           printf(\"read error\\n\");\n           break;\n       }\n    }\n    close(fd&#91;0]);\n    waitpid(id, NULL, 0);\n    return 0;   \n}<\/code><\/pre>\n\n\n\n<p><strong>\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16782879196515.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16782879196515.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u7ba1\u9053\u8bfb\u5199\u89c4\u5219<\/h4>\n\n\n\n<p>pipe2\u51fd\u6570\u4e0epipe\u51fd\u6570\u7c7b\u4f3c\uff0c\u4e5f\u662f\u7528\u4e8e\u521b\u5efa\u533f\u540d\u7ba1\u9053\uff0c\u5176\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int pipe2(int pipefd&#91;2], int flags)<\/code><\/pre>\n\n\n\n<p>pipe2\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u9009\u9879\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5f53\u6ca1\u6709\u6570\u636e\u53ef\u8bfb\u65f6\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O_NONBLOCK disable\uff1aread\u8c03\u7528\u963b\u585e\uff0c\u5373\u8fdb\u7a0b\u6682\u505c\u6267\u884c\uff0c\u4e00\u76f4\u7b49\u5230\u6709\u6570\u636e\u6765\u4e3a\u6b62\u3002<\/li>\n\n\n\n<li>O_NONBLOCK enable\uff1aread\u8c03\u7528\u8fd4\u56de-1\uff0cerrno\u503c\u4e3aEAGAIN\u3002<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5f53\u7ba1\u9053\u6ee1\u7684\u65f6\u5019\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O_NONBLOCK disable\uff1awrite\u8c03\u7528\u963b\u585e\uff0c\u76f4\u5230\u6709\u8fdb\u7a0b\u8bfb\u8d70\u6570\u636e\u3002<\/li>\n\n\n\n<li>O_NONBLOCK enable\uff1awrite\u8c03\u7528\u8fd4\u56de-1\uff0cerrno\u503c\u4e3aEAGAIN\u3002<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5982\u679c\u6240\u6709\u7ba1\u9053\u5199\u7aef\u5bf9\u5e94\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u88ab\u5173\u95ed\uff0c\u5219read\u8fd4\u56de0\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u6240\u6709\u7ba1\u9053\u8bfb\u7aef\u5bf9\u5e94\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u88ab\u5173\u95ed\uff0c\u5219write\u64cd\u4f5c\u4f1a\u4ea7\u751f\u4fe1\u53f7SIGPIPE\uff0c\u8fdb\u800c\u53ef\u80fd\u5bfc\u81f4write\u8fdb\u7a0b\u9000\u51fa\u3002<\/li>\n\n\n\n<li>\u5f53\u8981\u5199\u5165\u7684\u6570\u636e\u91cf\u4e0d\u5927\u4e8ePIPE_BUF\u65f6\uff0cLinux\u5c06\u4fdd\u8bc1\u5199\u5165\u7684\u539f\u5b50\u6027\u3002<\/li>\n\n\n\n<li>\u5f53\u8981\u5199\u5165\u7684\u6570\u636e\u91cf\u5927\u4e8ePIPE_BUF\u65f6\uff0cLinux\u5c06\u4e0d\u518d\u4fdd\u8bc1\u5199\u5165\u7684\u539f\u5b50\u6027\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u7ba1\u9053\u7684\u7279\u70b9<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7ba1\u9053\u5185\u90e8\u81ea\u5e26\u540c\u6b65\u4e0e\u4e92\u65a5\u673a\u5236\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u6211\u4eec\u5c06\u4e00\u6b21\u53ea\u5141\u8bb8\u4e00\u4e2a\u8fdb\u7a0b\u4f7f\u7528\u7684\u8d44\u6e90\uff0c\u79f0\u4e3a\u4e34\u754c\u8d44\u6e90\u3002\u7ba1\u9053\u5728\u540c\u4e00\u65f6\u523b\u53ea\u5141\u8bb8\u4e00\u4e2a\u8fdb\u7a0b\u5bf9\u5176\u8fdb\u884c\u5199\u5165\u6216\u662f\u8bfb\u53d6\u64cd\u4f5c\uff0c\u56e0\u6b64\u7ba1\u9053\u4e5f\u5c31\u662f\u4e00\u79cd\u4e34\u754c\u8d44\u6e90\u3002<\/p>\n\n\n\n<p>\u4e34\u754c\u8d44\u6e90\u662f\u9700\u8981\u88ab\u4fdd\u62a4\u7684\uff0c\u82e5\u662f\u6211\u4eec\u4e0d\u5bf9\u7ba1\u9053\u8fd9\u79cd\u4e34\u754c\u8d44\u6e90\u8fdb\u884c\u4efb\u4f55\u4fdd\u62a4\u673a\u5236\uff0c\u90a3\u4e48\u5c31\u53ef\u80fd\u51fa\u73b0\u540c\u4e00\u65f6\u523b\u6709\u591a\u4e2a\u8fdb\u7a0b\u5bf9\u540c\u4e00\u7ba1\u9053\u8fdb\u884c\u64cd\u4f5c\u7684\u60c5\u51b5\uff0c\u8fdb\u800c\u5bfc\u81f4\u540c\u65f6\u8bfb\u5199\uff0c\u4ea4\u53c9\u8bfb\u5199\u4ee5\u53ca\u8bfb\u5230\u7684\u6570\u636e\u4e0d\u4e00\u81f4\u7b49\u95ee\u9898\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u907f\u514d\u8fd9\u4e9b\u95ee\u9898\uff0c\u5185\u6838\u4f1a\u5bf9\u7ba1\u9053\u64cd\u4f5c\u8fdb\u884c\u540c\u6b65\u4e0e\u4e92\u65a5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u540c\u6b65\uff1a<\/strong> \u4e24\u4e2a\u6216\u4e24\u4e2a\u4ee5\u4e0a\u7684\u8fdb\u7a0b\u5728\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u534f\u8c03\u540c\u6b65\uff0c\u6309\u9884\u5b9a\u7684\u5148\u540e\u6b21\u5e8f\u8fd0\u884c\u3002\u6bd4\u5982\uff0cA\u4efb\u52a1\u7684\u8fd0\u884c\u4f9d\u8d56\u4e8eB\u4efb\u52a1\u4ea7\u751f\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li><strong>\u4e92\u65a5\uff1a<\/strong> \u4e00\u4e2a\u516c\u5171\u8d44\u6e90\u540c\u4e00\u65f6\u523b\u53ea\u80fd\u88ab\u4e00\u4e2a\u8fdb\u7a0b\u4f7f\u7528\uff0c\u591a\u4e2a\u8fdb\u7a0b\u4e0d\u80fd\u540c\u65f6\u4f7f\u7528\u516c\u5171\u8d44\u6e90\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5b9e\u9645\u4e0a\uff0c\u540c\u6b65\u662f\u4e00\u79cd\u66f4\u4e3a\u590d\u6742\u7684\u4e92\u65a5\uff0c\u800c\u4e92\u65a5\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u540c\u6b65\u3002\u5bf9\u4e8e\u7ba1\u9053\u7684\u573a\u666f\u6765\u8bf4\uff0c\u4e92\u65a5\u5c31\u662f\u4e24\u4e2a\u8fdb\u7a0b\u4e0d\u53ef\u4ee5\u540c\u65f6\u5bf9\u7ba1\u9053\u8fdb\u884c\u64cd\u4f5c\uff0c\u5b83\u4eec\u4f1a\u76f8\u4e92\u6392\u65a5\uff0c\u5fc5\u987b\u7b49\u4e00\u4e2a\u8fdb\u7a0b\u64cd\u4f5c\u5b8c\u6bd5\uff0c\u53e6\u4e00\u4e2a\u624d\u80fd\u64cd\u4f5c\uff0c\u800c\u540c\u6b65\u4e5f\u662f\u6307\u8fd9\u4e24\u4e2a\u4e0d\u80fd\u540c\u65f6\u5bf9\u7ba1\u9053\u8fdb\u884c\u64cd\u4f5c\uff0c\u4f46\u8fd9\u4e24\u4e2a\u8fdb\u7a0b\u5fc5\u987b\u8981\u6309\u7167\u67d0\u79cd\u6b21\u5e8f\u6765\u5bf9\u7ba1\u9053\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u4e92\u65a5\u5177\u6709\u552f\u4e00\u6027\u548c\u6392\u5b83\u6027\uff0c\u4f46\u4e92\u65a5\u5e76\u4e0d\u9650\u5236\u4efb\u52a1\u7684\u8fd0\u884c\u987a\u5e8f\uff0c\u800c\u540c\u6b65\u7684\u4efb\u52a1\u4e4b\u95f4\u5219\u6709\u660e\u786e\u7684\u987a\u5e8f\u5173\u7cfb\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7ba1\u9053\u7684\u751f\u547d\u5468\u671f\u968f\u8fdb\u7a0b\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u7ba1\u9053\u672c\u8d28\u4e0a\u662f\u901a\u8fc7\u6587\u4ef6\u8fdb\u884c\u901a\u4fe1\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u7ba1\u9053\u4f9d\u8d56\u4e8e\u6587\u4ef6\u7cfb\u7edf\uff0c\u90a3\u4e48\u5f53\u6240\u6709\u6253\u5f00\u8be5\u6587\u4ef6\u7684\u8fdb\u7a0b\u90fd\u9000\u51fa\u540e\uff0c\u8be5\u6587\u4ef6\u4e5f\u5c31\u4f1a\u88ab\u91ca\u653e\u6389\uff0c\u6240\u4ee5\u8bf4\u7ba1\u9053\u7684\u751f\u547d\u5468\u671f\u968f\u8fdb\u7a0b\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7ba1\u9053\u63d0\u4f9b\u6d41\u5f0f\u670d\u52a1<\/p>\n<\/blockquote>\n\n\n\n<p>\u5bf9\u4e8e\u8fdb\u7a0bA\u5199\u5165\u7ba1\u9053\u5f53\u4e2d\u7684\u6570\u636e\uff0c\u8fdb\u7a0bB\u6bcf\u6b21\u4ece\u7ba1\u9053\u8bfb\u53d6\u7684\u6570\u636e\u7684\u591a\u5c11\u662f\u4efb\u610f\u7684\uff0c\u8fd9\u79cd\u88ab\u79f0\u4e3a\u6d41\u5f0f\u670d\u52a1\uff0c\u4e0e\u4e4b\u76f8\u5bf9\u5e94\u7684\u662f\u6570\u636e\u62a5\u670d\u52a1\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6d41\u5f0f\u670d\u52a1\uff1a<\/strong> \u6570\u636e\u6ca1\u6709\u660e\u786e\u7684\u5206\u5272\uff0c\u4e0d\u5206\u4e00\u5b9a\u7684\u62a5\u6587\u6bb5\u3002<\/li>\n\n\n\n<li><strong>\u6570\u636e\u62a5\u670d\u52a1\uff1a<\/strong> \u6570\u636e\u6709\u660e\u786e\u7684\u5206\u5272\uff0c\u62ff\u6570\u636e\u6309\u62a5\u6587\u6bb5\u62ff\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7ba1\u9053\u662f\u534a\u53cc\u5de5\u901a\u4fe1\u7684\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u5728\u6570\u636e\u901a\u4fe1\u4e2d\uff0c\u6570\u636e\u5728\u7ebf\u8def\u4e0a\u7684\u4f20\u9001\u65b9\u5f0f\u53ef\u4ee5\u5206\u4e3a\u4ee5\u4e0b\u4e09\u79cd\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5355\u5de5\u901a\u4fe1(Simplex Communication)\uff1a<\/strong> \u5355\u5de5\u6a21\u5f0f\u7684\u6570\u636e\u4f20\u8f93\u662f\u5355\u5411\u7684\u3002\u901a\u4fe1\u53cc\u65b9\u4e2d\uff0c\u4e00\u65b9\u56fa\u5b9a\u4e3a\u53d1\u9001\u7aef\uff0c\u53e6\u4e00\u65b9\u56fa\u5b9a\u4e3a\u63a5\u6536\u7aef\u3002<\/li>\n\n\n\n<li><strong>\u534a\u53cc\u5de5\u901a\u4fe1(Half Duplex):<\/strong> \u534a\u53cc\u5de5\u901a\u4fe1\u4f20\u8f93\u6570\u636e\u53ef\u4ee5\u5728\u4e00\u4e2a\u4fe1\u53f7\u8f7d\u4f53\u7684\u4e24\u4e2a\u65b9\u5411\u4e0a\u4f20\u8f93\uff0c\u4f46\u662f\u4e0d\u80fd\u540c\u65f6\u4f20\u8f93\u3002<\/li>\n\n\n\n<li><strong>\u5168\u53cc\u5de5\u901a\u4fe1(Full Duplex):<\/strong> \u5168\u53cc\u5de5\u901a\u4fe1\u5141\u8bb8\u6570\u636e\u5728\u4e24\u4e2a\u65b9\u5411\u4e0a\u540c\u65f6\u4f20\u8f93\uff0c\u5b83\u7684\u80fd\u529b\u76f8\u5f53\u4e8e\u4e24\u4e2a\u5355\u5de5\u901a\u4fe1\u65b9\u5f0f\u7684\u7ed3\u5408\u3002\u5168\u53cc\u5de5\u53ef\u4ee5\u540c\u65f6\uff08\u77ac\u65f6\uff09\u8fdb\u884c\u4fe1\u53f7\u7684\u53cc\u5411\u4f20\u8f93\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u7ba1\u9053\u662f\u534a\u53cc\u5de5\u7684\uff0c\u6570\u636e\u53ea\u80fd\u5411\u4e00\u4e2a\u65b9\u5411\u6d41\u52a8\uff0c\u9700\u8981\u53cc\u65b9\u901a\u4fe1\u65f6\uff0c\u9700\u8981\u5efa\u7acb\u8d77\u4e24\u4e2a\u7ba1\u9053\u3002<\/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:\/\/cdn.codergodv.xyz\/20260324134059572.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260324134059572.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u7ba1\u9053\u4f7f\u7528\u7684\u56db\u79cd\u7279\u6b8a\u60c5\u51b5<\/h4>\n\n\n\n<p>\u5728\u4f7f\u7528\u7ba1\u9053\u65f6\uff0c\u53ef\u80fd\u51fa\u73b0\u4ee5\u4e0b\u56db\u79cd\u7279\u6b8a\u60c5\u51b5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5199\u7aef\u8fdb\u7a0b\u4e0d\u5199\uff0c\u8bfb\u7aef\u8fdb\u7a0b\u4e00\u76f4\u8bfb\uff0c\u90a3\u4e48\u6b64\u65f6\u4f1a\u56e0\u4e3a\u7ba1\u9053\u91cc\u9762\u6ca1\u6709\u6570\u636e\u53ef\u8bfb\uff0c\u5bf9\u5e94\u7684\u8bfb\u7aef\u8fdb\u7a0b\u4f1a\u88ab\u6302\u8d77\uff0c\u76f4\u5230\u7ba1\u9053\u91cc\u9762\u6709\u6570\u636e\u540e\uff0c\u8bfb\u7aef\u8fdb\u7a0b\u624d\u4f1a\u88ab\u5524\u9192\u3002<\/li>\n\n\n\n<li>\u8bfb\u7aef\u8fdb\u7a0b\u4e0d\u8bfb\uff0c\u5199\u7aef\u8fdb\u7a0b\u4e00\u76f4\u5199\uff0c\u90a3\u4e48\u5f53\u7ba1\u9053\u88ab\u5199\u6ee1\u540e\uff0c\u5bf9\u5e94\u7684\u5199\u7aef\u8fdb\u7a0b\u4f1a\u88ab\u6302\u8d77\uff0c\u76f4\u5230\u7ba1\u9053\u5f53\u4e2d\u7684\u6570\u636e\u88ab\u8bfb\u7aef\u8fdb\u7a0b\u8bfb\u53d6\u540e\uff0c\u5199\u7aef\u8fdb\u7a0b\u624d\u4f1a\u88ab\u5524\u9192\u3002<\/li>\n\n\n\n<li>\u5199\u7aef\u8fdb\u7a0b\u5c06\u6570\u636e\u5199\u5b8c\u540e\u5c06\u5199\u7aef\u5173\u95ed\uff0c\u90a3\u4e48\u8bfb\u7aef\u8fdb\u7a0b\u5c06\u7ba1\u9053\u5f53\u4e2d\u7684\u6570\u636e\u8bfb\u5b8c\u540e\uff0c\u5c31\u4f1a\u7ee7\u7eed\u6267\u884c\u8be5\u8fdb\u7a0b\u4e4b\u540e\u7684\u4ee3\u7801\u903b\u8f91\uff0c\u800c\u4e0d\u4f1a\u88ab\u6302\u8d77\u3002<\/li>\n\n\n\n<li>\u8bfb\u7aef\u8fdb\u7a0b\u5c06\u8bfb\u7aef\u5173\u95ed\uff0c\u800c\u5199\u7aef\u8fdb\u7a0b\u8fd8\u4e00\u76f4\u5411\u7ba1\u9053\u5199\u5165\u6570\u636e\uff0c\u90a3\u4e48\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u5c06\u5199\u7aef\u8fdb\u7a0b\u6740\u6389\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5176\u4e2d\u524d\u9762\u4e24\u79cd\u60c5\u51b5\u5c31\u80fd\u591f\u5f88\u597d\u7684\u8bf4\u660e\uff0c\u7ba1\u9053\u662f\u81ea\u5e26\u540c\u6b65\u4e0e\u4e92\u65a5\u673a\u5236\u7684\uff0c\u8bfb\u7aef\u8fdb\u7a0b\u548c\u5199\u7aef\u8fdb\u7a0b\u662f\u6709\u4e00\u4e2a\u6b65\u8c03\u534f\u8c03\u7684\u8fc7\u7a0b\u7684\uff0c\u4e0d\u4f1a\u8bf4\u5f53\u7ba1\u9053\u6ca1\u6709\u6570\u636e\u4e86\u8bfb\u7aef\u8fd8\u5728\u8bfb\u53d6\uff0c\u800c\u5f53\u7ba1\u9053\u5df2\u7ecf\u6ee1\u4e86\u5199\u7aef\u8fd8\u5728\u5199\u5165\u3002\u8bfb\u7aef\u8fdb\u7a0b\u8bfb\u53d6\u6570\u636e\u7684\u6761\u4ef6\u662f\u7ba1\u9053\u91cc\u9762\u6709\u6570\u636e\uff0c\u5199\u7aef\u8fdb\u7a0b\u5199\u5165\u6570\u636e\u7684\u6761\u4ef6\u662f\u7ba1\u9053\u5f53\u4e2d\u8fd8\u6709\u7a7a\u95f4\uff0c\u82e5\u662f\u6761\u4ef6\u4e0d\u6ee1\u8db3\uff0c\u5219\u76f8\u5e94\u7684\u8fdb\u7a0b\u5c31\u4f1a\u88ab\u6302\u8d77\uff0c\u76f4\u5230\u6761\u4ef6\u6ee1\u8db3\u540e\u624d\u4f1a\u88ab\u518d\u6b21\u5524\u9192\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e09\u79cd\u60c5\u51b5\u5176\u5b9e\u4e5f\u5f88\u597d\u7406\u89e3\uff0c\u8bfb\u7aef\u8fdb\u7a0b\u5df2\u7ecf\u5c06\u7ba1\u9053\u5f53\u4e2d\u7684\u6240\u6709\u6570\u636e\u90fd\u8bfb\u53d6\u51fa\u6765\u4e86\uff0c\u800c\u4e14\u6b64\u540e\u4e5f\u4e0d\u4f1a\u6709\u5199\u7aef\u518d\u8fdb\u884c\u5199\u5165\u4e86\uff0c\u90a3\u4e48\u6b64\u65f6\u8bfb\u7aef\u8fdb\u7a0b\u4e5f\u5c31\u53ef\u4ee5\u6267\u884c\u8be5\u8fdb\u7a0b\u7684\u5176\u4ed6\u903b\u8f91\u4e86\uff0c\u800c\u4e0d\u4f1a\u88ab\u6302\u8d77\u3002<\/p>\n\n\n\n<p>\u7b2c\u56db\u79cd\u60c5\u51b5\u4e5f\u4e0d\u96be\u7406\u89e3\uff0c\u65e2\u7136\u7ba1\u9053\u5f53\u4e2d\u7684\u6570\u636e\u5df2\u7ecf\u6ca1\u6709\u8fdb\u7a0b\u4f1a\u8bfb\u53d6\u4e86\uff0c\u90a3\u4e48\u5199\u7aef\u8fdb\u7a0b\u7684\u5199\u5165\u5c06\u6ca1\u6709\u610f\u4e49\uff0c\u56e0\u6b64\u64cd\u4f5c\u7cfb\u7edf\u76f4\u63a5\u5c06\u5199\u7aef\u8fdb\u7a0b\u6740\u6389\u3002\u800c\u6b64\u65f6\u5b50\u8fdb\u7a0b\u4ee3\u7801\u90fd\u8fd8\u6ca1\u6709\u8dd1\u5b8c\u5c31\u88ab\u7ec8\u6b62\u4e86\uff0c\u5c5e\u4e8e\u5f02\u5e38\u9000\u51fa\uff0c\u90a3\u4e48\u5b50\u8fdb\u7a0b\u5fc5\u7136\u6536\u5230\u4e86\u67d0\u79cd\u4fe1\u53f7\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u770b\u770b\u60c5\u51b5\u56db\u4e2d\uff0c\u5b50\u8fdb\u7a0b\u9000\u51fa\u65f6\u7a76\u7adf\u662f\u6536\u5230\u4e86\u4ec0\u4e48\u4fe1\u53f7\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int main()\n{\n    int fd&#91;2] = {0};\n    if (pipe(fd) &lt; 0)\n    {\n        perror(\"pipe fail\");\n        return 1;\n    }\n    pid_t id = fork();\n    if (0 == id)\n    {\n        close(fd&#91;0]);\n        const char* msg = \"hello father,I am child...\";\n        int count = 10;\n        while (count--)\n        {\n            write(fd&#91;1], msg, strlen(msg));\n            sleep(1);\n        }\n        close(fd&#91;1]);\n        exit(0);\n    }\n    close(fd&#91;1]);\n    \/\/\u5173\u95ed\u8bfb\u7aef\uff0c\u4f7f\u64cd\u4f5c\u7cfb\u7edf\u628a\u5b50\u8fdb\u7a0b\u6740\u6389\n    close(fd&#91;0]);\n    int status = 0;\n    waitpid(id, &amp;status, 0);\n    printf(\"child get signal:%d\\n\", status &amp; 0x7F);\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u8fd0\u884c\u7ed3\u679c\u663e\u793a\uff0c\u5b50\u8fdb\u7a0b\u9000\u51fa\u65f6\u6536\u5230\u7684\u662f13\u53f7\u4fe1\u53f7\u3002<img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16782909506008.png\" alt=\"img\"><\/p>\n\n\n\n<p>\u901a\u8fc7<code>kill -l<\/code>\u547d\u4ee4\u53ef\u4ee5\u67e5\u770b13\u5bf9\u5e94\u7684\u5177\u4f53\u4fe1\u53f7<\/p>\n\n\n\n<p><code>kill -l<\/code><\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167829149805111.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167829149805111.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u7531\u6b64\u53ef\u77e5\uff0c\u5f53\u53d1\u751f\u60c5\u51b5\u56db\u65f6\uff0c\u64cd\u4f5c\u7cfb\u7edf\u5411\u5b50\u8fdb\u7a0b\u53d1\u9001\u7684\u662f<code>SIGPIPE<\/code>\u4fe1\u53f7\u5c06\u5b50\u8fdb\u7a0b\u7ec8\u6b62\u7684\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7ba1\u9053\u7684\u5927\u5c0f<\/h4>\n\n\n\n<p>\u7ba1\u9053\u7684\u5bb9\u91cf\u662f\u6709\u9650\u7684\uff0c\u5982\u679c\u7ba1\u9053\u5df2\u6ee1\uff0c\u90a3\u4e48\u5199\u7aef\u5c06\u963b\u585e\u6216\u5931\u8d25\uff0c\u90a3\u4e48\u7ba1\u9053\u7684\u6700\u5927\u5bb9\u91cf\u662f\u591a\u5c11\u5462?<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528man\u624b\u518c<\/p>\n<\/blockquote>\n\n\n\n<p><code>man 7 pipe<\/code><\/p>\n\n\n\n<p>\u6839\u636eman\u624b\u518c\uff0c\u57282.6.11\u4e4b\u524d\u7684Linux\u7248\u672c\u4e2d\uff0c\u7ba1\u9053\u7684\u6700\u5927\u5bb9\u91cf\u4e0e\u7cfb\u7edf\u9875\u9762\u5927\u5c0f\u76f8\u540c\uff0c\u4eceLinux 2.6.11\u5f80\u540e\uff0c\u7ba1\u9053\u7684\u6700\u5927\u5bb9\u91cf\u662f65536\u5b57\u8282\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167829188258414.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167829188258414.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u7136\u540e\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528uname -r\u547d\u4ee4\uff0c\u67e5\u770b\u81ea\u5df1\u4f7f\u7528\u7684Linux\u7248\u672c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167829195528817.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167829195528817.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u6839\u636eman\u624b\u518c\uff0c\u6211\u4f7f\u7528\u7684\u662fLinux 2.6.11\u4e4b\u540e\u7684\u7248\u672c\uff0c\u56e0\u6b64\u7ba1\u9053\u7684\u6700\u5927\u5bb9\u91cf\u662f65536\u5b57\u8282\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u6cd5\u4e8c\uff1a\u4f7f\u7528ulimit\u547d\u4ee4<\/p>\n<\/blockquote>\n\n\n\n<p>\u5176\u6b21\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528<code>ulimit -a<\/code>\u547d\u4ee4\uff0c\u67e5\u770b\u5f53\u524d\u8d44\u6e90\u9650\u5236\u7684\u8bbe\u5b9a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167829242509920.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167829242509920.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u6839\u636e\u663e\u793a\uff0c\u7ba1\u9053\u7684\u6700\u5927\u5bb9\u91cf\u662f 512 \u00d7 8 = 4096 \u5b57\u8282\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u6cd5\u4e09\uff1a\u81ea\u884c\u6d4b\u8bd5<\/p>\n<\/blockquote>\n\n\n\n<p>\u8fd9\u91cc\u53d1\u73b0\uff0c\u6839\u636eman\u624b\u518c\u5f97\u5230\u7684\u7ba1\u9053\u5bb9\u91cf\u4e0e\u4f7f\u7528ulimit\u547d\u4ee4\u5f97\u5230\u7684\u7ba1\u9053\u5bb9\u91cf\u4e0d\u540c\uff0c\u90a3\u4e48\u6b64\u65f6\u6211\u4eec\u53ef\u4ee5\u81ea\u884c\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n\n\n\n<p>\u524d\u9762\u8bf4\u5230\uff0c\u82e5\u662f\u8bfb\u7aef\u8fdb\u7a0b\u4e00\u76f4\u4e0d\u8bfb\u53d6\u7ba1\u9053\u5f53\u4e2d\u7684\u6570\u636e\uff0c\u5199\u7aef\u8fdb\u7a0b\u4e00\u76f4\u5411\u7ba1\u9053\u5199\u5165\u6570\u636e\uff0c\u5f53\u7ba1\u9053\u88ab\u5199\u6ee1\u540e\uff0c\u5199\u7aef\u8fdb\u7a0b\u5c31\u4f1a\u88ab\u6302\u8d77\u3002\u636e\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u5199\u51fa\u4ee5\u4e0b\u4ee3\u7801\u6765\u6d4b\u8bd5\u7ba1\u9053\u7684\u6700\u5927\u5bb9\u91cf\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;unistd.h&gt;\n#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;sys\/wait.h&gt;\nint main()\n{\n    int fd&#91;2] = { 0 };\n    if (pipe(fd) &lt; 0){ \/\/\u4f7f\u7528pipe\u521b\u5efa\u533f\u540d\u7ba1\u9053\n        perror(\"pipe\");\n        return 1;\n    }\n    pid_t id = fork(); \/\/\u4f7f\u7528fork\u521b\u5efa\u5b50\u8fdb\u7a0b\n    if (id == 0){\n        \/\/child \n        close(fd&#91;0]); \/\/\u5b50\u8fdb\u7a0b\u5173\u95ed\u8bfb\u7aef\n        char c = 'a';\n        int count = 0;\n        \/\/\u5b50\u8fdb\u7a0b\u4e00\u76f4\u8fdb\u884c\u5199\u5165\uff0c\u4e00\u6b21\u5199\u5165\u4e00\u4e2a\u5b57\u8282\n        while (1){\n            write(fd&#91;1], &amp;c, 1);\n            count++;\n            printf(\"%d\\n\", count); \/\/\u6253\u5370\u5f53\u524d\u5199\u5165\u7684\u5b57\u8282\u6570\n        }\n        close(fd&#91;1]);\n        exit(0);\n    }\n    \/\/father\n    close(fd&#91;1]); \/\/\u7236\u8fdb\u7a0b\u5173\u95ed\u5199\u7aef\n\n    \/\/\u7236\u8fdb\u7a0b\u4e0d\u8fdb\u884c\u8bfb\u53d6\n\n    waitpid(id, NULL, 0);\n    close(fd&#91;0]);\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u5728\u8bfb\u7aef\u8fdb\u7a0b\u4e0d\u8fdb\u884c\u8bfb\u53d6\u7684\u60c5\u51b5\u4e0b\uff0c\u5199\u7aef\u8fdb\u7a0b\u6700\u591a\u8bfb65536\u5b57\u8282\u7684\u6570\u636e\u5c31\u88ab\u64cd\u4f5c\u7cfb\u7edf\u6302\u8d77\u4e86\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u6211\u4e4b\u524dLinux\u7248\u672c\u4e2d\u7ba1\u9053\u7684\u6700\u5927\u5bb9\u91cf\u662f65536\u5b57\u8282\u3002<img decoding=\"async\" src=\"https:\/\/img-blog.csdnimg.cn\/8523659b2a6f42f28106e7591ef3a3d5.png?x-oss-process=image\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16\" alt=\"img\"><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u90a3\u4e3a\u4ec0\u4e48\u4f7f\u7528ulimit\u547d\u4ee4\u67e5\u8be2\u5230\u7684\u7ba1\u9053\u5927\u5c0f\u548c\u4f7f\u7528man\u624b\u518c\u3001\u6d4b\u8bd5\u83b7\u53d6\u7684\u7ba1\u9053\u5927\u5c0f\u4e0d\u4e00\u81f4\u5462\uff1f<\/p>\n<\/blockquote>\n\n\n\n<p>\u56e0\u4e3a\u7ba1\u9053\u7684\u5927\u5c0f\u7531pipe buf\u548c\u7f13\u51b2\u6761\u76ee\u7684\u6570\u76ee\u5171\u540c\u51b3\u5b9a\uff0cpipe buf\u4e5f\u5c31\u662f\u5185\u6838\u7ba1\u9053\u7f13\u51b2\u533a\u7684\u5bb9\u91cf\uff0c\u8fd9\u4e2a\u503c\u7531\u5185\u6838\u8bbe\u5b9a\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u901a\u8fc7ulimit -a\u547d\u4ee4\u770b\u5230\u76844096\u3002\u7f13\u51b2\u6761\u76ee\u7684\u6570\u76ee\u4e2a\u6570\u5b58\u5728\u4e8e\/usr\/src\/kernels\/\u5185\u6838\u7248\u672c\/include\/linux\/pipe_fs_i.h\u4e2d\uff0c\u8fd9\u4e2a\u7f13\u51b2\u6761\u76ee\u7684\u4e2a\u6570\u4e0eLinux\u5185\u6838\u7248\u672c\u76f8\u5173\uff0c\u5728\u6211\u7684\u5f53\u524d\u7248\u672c\u7684Linux\u5185\u6838\u4e0a\u7f13\u51b2\u6761\u76ee\u7684\u4e2a\u6570\u662f16\uff0c\u6240\u4ee5\u7ba1\u9053\u7684\u6700\u7ec8\u5bb9\u91cf\u662f16 * 4096 = 65536bytes\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u547d\u540d\u7ba1\u9053<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u547d\u540d\u7ba1\u9053\u7684\u539f\u7406<\/h4>\n\n\n\n<p>\u533f\u540d\u7ba1\u9053\u53ea\u80fd\u7528\u4e8e\u5177\u6709\u5171\u540c\u7956\u5148\u7684\u8fdb\u7a0b\uff08\u5177\u6709\u4eb2\u7f18\u5173\u7cfb\u7684\u8fdb\u7a0b\uff09\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u901a\u5e38\uff0c\u4e00\u4e2a\u7ba1\u9053\u7531\u4e00\u4e2a\u8fdb\u7a0b\u521b\u5efa\uff0c\u7136\u540e\u8be5\u8fdb\u7a0b\u8c03\u7528fork\uff0c\u6b64\u540e\u7236\u5b50\u8fdb\u7a0b\u4e4b\u95f4\u5c31\u53ef\u5e94\u7528\u8be5\u7ba1\u9053\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u8981\u5b9e\u73b0\u4e24\u4e2a\u6beb\u4e0d\u76f8\u5173\u8fdb\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u53ef\u4ee5\u4f7f\u7528\u547d\u540d\u7ba1\u9053\u6765\u505a\u3002\u547d\u540d\u7ba1\u9053\u5c31\u662f\u4e00\u79cd\u7279\u6b8a\u7c7b\u578b\u7684\u6587\u4ef6\uff0c\u4e24\u4e2a\u8fdb\u7a0b\u901a\u8fc7\u547d\u540d\u7ba1\u9053\u7684\u6587\u4ef6\u540d\u6253\u5f00\u540c\u4e00\u4e2a\u7ba1\u9053\u6587\u4ef6\uff0c\u6b64\u65f6\u8fd9\u4e24\u4e2a\u8fdb\u7a0b\u5c31\u770b\u5230\u4e86\u540c\u4e00\u4efd\u8d44\u6e90\uff0c\u8fdb\u800c\u5c31\u53ef\u4ee5\u901a\u4fe1\u4e86\u3002<\/p>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u666e\u901a\u6587\u4ef6\u662f\u5f88\u96be\u505a\u5230\u901a\u4fe1\u7684\uff0c\u5373\u4fbf\u505a\u5230\u901a\u4fe1\u4e5f\u65e0\u6cd5\u89e3\u51b3\u4e00\u4e9b\u5b89\u5168\u95ee\u9898\u3002<\/li>\n\n\n\n<li>\u547d\u540d\u7ba1\u9053\u548c\u533f\u540d\u7ba1\u9053\u4e00\u6837\uff0c\u90fd\u662f\u5185\u5b58\u6587\u4ef6\uff0c\u53ea\u4e0d\u8fc7\u547d\u540d\u7ba1\u9053\u5728\u78c1\u76d8\u6709\u4e00\u4e2a\u7b80\u5355\u7684\u6620\u50cf\uff0c\u4f46\u8fd9\u4e2a\u6620\u50cf\u7684\u5927\u5c0f\u6c38\u8fdc\u4e3a0\uff0c\u56e0\u4e3a\u547d\u540d\u7ba1\u9053\u548c\u533f\u540d\u7ba1\u9053\u90fd\u4e0d\u4f1a\u5c06\u6570\u636e\u5237\u65b0\u5230\u78c1\u76d8\u5f53\u4e2d\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f7f\u7528\u547d\u4ee4\u521b\u5efa\u547d\u540d\u7ba1\u9053<\/h4>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>mkfifo<\/code>\u547d\u4ee4\u6765\u521b\u5efa\u4e00\u4e2a\u7ba1\u9053<\/p>\n\n\n\n<p><code>mkfifo fifo<\/code><\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16783252081923.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16783252081923.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u521b\u5efa\u51fa\u6765\u7684\u6587\u4ef6\u7684\u7c7b\u578b\u662f<code>p<\/code>\uff0c\u4ee3\u8868\u8be5\u6587\u4ef6\u662f\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u3002<img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/b5aff7da35684b518e52ea4747a6513b.png\" alt=\"img\"><\/p>\n\n\n\n<p>\u4f7f\u7528\u8fd9\u4e2a\u547d\u540d\u7ba1\u9053\u6587\u4ef6\uff0c\u5c31\u80fd\u5b9e\u73b0\u4e24\u4e2a\u8fdb\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\u4e86\u3002\u6211\u4eec\u5728\u4e00\u4e2a\u8fdb\u7a0b\uff08\u8fdb\u7a0bA\uff09\u4e2d\u7528shell\u811a\u672c\u6bcf\u79d2\u5411\u547d\u540d\u7ba1\u9053\u5199\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u5728\u53e6\u4e00\u4e2a\u8fdb\u7a0b\uff08\u8fdb\u7a0bB\uff09\u5f53\u4e2d\u7528cat\u547d\u4ee4\u4ece\u547d\u540d\u7ba1\u9053\u5f53\u4e2d\u8fdb\u884c\u8bfb\u53d6\u3002<br>\u73b0\u8c61\u5c31\u662f\u5f53\u8fdb\u7a0bA\u542f\u52a8\u540e\uff0c\u8fdb\u7a0bB\u4f1a\u6bcf\u79d2\u4ece\u547d\u540d\u7ba1\u9053\u4e2d\u8bfb\u53d6\u4e00\u4e2a\u5b57\u7b26\u4e32\u6253\u5370\u5230\u663e\u793a\u5668\u4e0a\u3002\u8fd9\u5c31\u8bc1\u660e\u4e86\u8fd9\u4e24\u4e2a\u6beb\u4e0d\u76f8\u5173\u7684\u8fdb\u7a0b\u53ef\u4ee5\u901a\u8fc7\u547d\u540d\u7ba1\u9053\u8fdb\u884c\u6570\u636e\u4f20\u8f93\uff0c\u5373\u901a\u4fe1\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16783258248458.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16783258248458.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u4e4b\u524d\u6211\u4eec\u8bf4\u8fc7\uff0c\u5f53\u7ba1\u9053\u7684\u8bfb\u7aef\u8fdb\u7a0b\u9000\u51fa\u540e\uff0c\u5199\u7aef\u8fdb\u7a0b\u518d\u5411\u7ba1\u9053\u5199\u5165\u6570\u636e\u5c31\u6ca1\u6709\u610f\u4e49\u4e86\uff0c\u6b64\u65f6\u5199\u7aef\u8fdb\u7a0b\u4f1a\u88ab\u64cd\u4f5c\u7cfb\u7edf\u6740\u6389\uff0c\u5728\u8fd9\u91cc\u5c31\u53ef\u4ee5\u5f88\u597d\u7684\u5f97\u5230\u9a8c\u8bc1\uff1a\u5f53\u6211\u4eec\u7ec8\u6b62\u6389\u8bfb\u7aef\u8fdb\u7a0b\u540e\uff0c\u56e0\u4e3a\u5199\u7aef\u6267\u884c\u7684\u5faa\u73af\u811a\u672c\u662f\u7531\u547d\u4ee4\u884c\u89e3\u91ca\u5668bash\u6267\u884c\u7684\uff0c\u6240\u4ee5\u6b64\u65f6bash\u5c31\u4f1a\u88ab\u64cd\u4f5c\u7cfb\u7edf\u6740\u6389\uff0c\u6211\u4eec\u7684\u4e91\u670d\u52a1\u5668\u4e5f\u5c31\u9000\u51fa\u4e86\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167832584259011.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167832584259011.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u521b\u5efa\u4e00\u4e2a\u547d\u540d\u7ba1\u9053<\/h4>\n\n\n\n<p>\u5728\u7a0b\u5e8f\u4e2d\u521b\u5efa\u547d\u540d\u7ba1\u9053\u4f7f\u7528mkfifo\u51fd\u6570\uff0cmkfifo\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p><code>int mkfifo(const char* pathname, mode_t mode)<\/code><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>mkfifo\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u662fpathname\uff0c\u8868\u793a\u8981\u521b\u5efa\u7684\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u3002<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u82e5pathname\u4ee5\u8def\u5f84\u7684\u65b9\u5f0f\u7ed9\u51fa\uff0c\u5219\u5c06\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u521b\u5efa\u5728pathname\u8def\u5f84\u4e0b\u3002<\/li>\n\n\n\n<li>\u82e5pathname\u4ee5\u6587\u4ef6\u540d\u7684\u65b9\u5f0f\u7ed9\u51fa\uff0c\u5219\u5c06\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u9ed8\u8ba4\u521b\u5efa\u5728\u5f53\u524d\u8def\u52b2\u4e0b\u3002\uff08\u6ce8\u610f\u5f53\u524d\u8def\u5f84\u7684\u542b\u4e49\uff09<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>mkfifo\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662fmode\uff0c\u8868\u793a\u521b\u5efa\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u7684\u9ed8\u8ba4\u6743\u9650\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u4f8b\u5982\uff0c\u5c06mode\u8bbe\u7f6e\u4e3a0666\uff0c\u5219\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u521b\u5efa\u51fa\u6765\u7684\u6743\u9650\u5982\u4e0b\uff1a<br><img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/a4c4b76877dd4c0280e80b144ddb7297.png\" alt=\"img\"><\/p>\n\n\n\n<p>\u4f46\u5b9e\u9645\u4e0a\u521b\u5efa\u51fa\u6765\u6587\u4ef6\u7684\u6743\u9650\u503c\u8fd8\u4f1a\u53d7\u5230umask\uff08\u6587\u4ef6\u9ed8\u8ba4\u63a9\u7801\uff09\u7684\u5f71\u54cd\uff0c\u5b9e\u9645\u521b\u5efa\u51fa\u6765\u6587\u4ef6\u7684\u6743\u9650\u4e3a\uff1amode&amp;(~umask)\u3002umask\u7684\u9ed8\u8ba4\u503c\u4e00\u822c\u4e3a0002\uff0c\u5f53\u6211\u4eec\u8bbe\u7f6emode\u503c\u4e3a0666\u65f6\u5b9e\u9645\u521b\u5efa\u51fa\u6765\u6587\u4ef6\u7684\u6743\u9650\u4e3a0664\u3002<br><img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/d7c8b8f2f9c64735bf0e4bf6fef1604d.png\" alt=\"img\"><\/p>\n\n\n\n<p>\u82e5\u60f3\u521b\u5efa\u51fa\u6765\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u7684\u6743\u9650\u503c\u4e0d\u53d7umask\u7684\u5f71\u54cd\uff0c\u5219\u9700\u8981\u5728\u521b\u5efa\u6587\u4ef6\u524d\u4f7f\u7528<code>umask<\/code>\u51fd\u6570\u5c06\u6587\u4ef6\u9ed8\u8ba4\u63a9\u7801\u8bbe\u7f6e\u4e3a0\u3002<\/p>\n\n\n\n<p><code>umask(0)<\/code><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>mkfifo\u7684\u8fd4\u56de\u503c\u3002<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u547d\u540d\u7ba1\u9053\u521b\u5efa\u6210\u529f\uff0c\u8fd4\u56de0\u3002<\/li>\n\n\n\n<li>\u547d\u540d\u7ba1\u9053\u521b\u5efa\u5931\u8d25\uff0c\u8fd4\u56de-1\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u521b\u5efa\u547d\u540d\u7ba1\u9053\u793a\u4f8b\uff1a<\/p>\n<\/blockquote>\n\n\n\n<p>\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u5373\u53ef\u5728\u5f53\u524d\u8def\u5f84\u4e0b\uff0c\u521b\u5efa\u51fa\u4e00\u4e2a\u540d\u4e3amyfifo\u7684\u547d\u540d\u7ba1\u9053\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n#include &lt;sys\/types.h&gt;\n#include &lt;sys\/stat.h&gt;\n\n#define FILE_NAME \"myfifo\"\n\nint main()\n{\n    umask(0); \/\/\u5c06\u6587\u4ef6\u9ed8\u8ba4\u63a9\u7801\u8bbe\u7f6e\u4e3a0\n    if (mkfifo(FILE_NAME, 0666) &lt; 0){ \/\/\u4f7f\u7528mkfifo\u521b\u5efa\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n        perror(\"mkfifo\");\n        return 1;\n    }\n\n    \/\/create success...\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u8fd0\u884c\u4ee3\u7801\u540e\uff0c\u547d\u540d\u7ba1\u9053myfifo\u5c31\u5728\u5f53\u524d\u8def\u5f84\u4e0b\u88ab\u521b\u5efa\u4e86\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167835062725018.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167835062725018.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u547d\u540d\u7ba1\u9053\u7684\u6253\u5f00\u89c4\u5219<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5982\u679c\u5f53\u524d\u64cd\u4f5c\u662f\u4e3a\u8bfb\u800c\u6253\u5f00FIFO\u65f6\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O_NONBLOCK disable\uff1a\u963b\u585e\u76f4\u5230\u6709\u76f8\u5e94\u8fdb\u7a0b\u4e3a\u5199\u800c\u6253\u5f00\u8be5FIFO\u3002<\/li>\n\n\n\n<li>O_NONBLOCK enable\uff1a\u7acb\u523b\u8fd4\u56de\u6210\u529f\u3002<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5982\u679c\u5f53\u524d\u64cd\u4f5c\u662f\u4e3a\u5199\u800c\u6253\u5f00FIFO\u65f6\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O_NONBLOCK disable\uff1a\u963b\u585e\u76f4\u5230\u6709\u76f8\u5e94\u8fdb\u7a0b\u4e3a\u8bfb\u800c\u6253\u5f00\u8be5FIFO\u3002<\/li>\n\n\n\n<li>O_NONBLOCK enable\uff1a\u7acb\u523b\u8fd4\u56de\u5931\u8d25\uff0c\u9519\u8bef\u7801\u4e3aENXIO\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7528\u547d\u540d\u7ba1\u9053\u5b9e\u73b0server&amp;client\u901a\u4fe1<\/h4>\n\n\n\n<p>\u5b9e\u73b0\u670d\u52a1\u7aef(server)\u548c\u5ba2\u6237\u7aef(client)\u4e4b\u95f4\u7684\u901a\u4fe1\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u5148\u8ba9\u670d\u52a1\u5668\u7aef\u8fd0\u884c\u8d77\u6765\uff0c\u6211\u4eec\u9700\u8981\u8ba9\u670d\u52a1\u5668\u7aef\u8fd0\u884c\u540e\u521b\u5efa\u4e00\u4e2a\u547d\u540d\u7ba1\u9053\u6587\u4ef6\uff0c\u7136\u540e\u518d\u4ee5\u8bfb\u7684\u65b9\u5f0f\u6253\u5f00\u8be5\u547d\u540d\u7ba1\u9053\u6587\u4ef6\uff0c\u4e4b\u540e\u670d\u52a1\u7aef\u5c31\u53ef\u4ee5\u4ece\u8be5\u547d\u540d\u7ba1\u9053\u5f53\u4e2d\u8bfb\u53d6\u5ba2\u6237\u7aef\u53d1\u6765\u7684\u901a\u4fe1\u4fe1\u606f\u4e86\u3002<\/p>\n\n\n\n<p>\u670d\u52a1\u7aef\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/server.c\n#include \"comm.h\"\n\nint main()\n{\n    umask(0); \/\/\u5c06\u6587\u4ef6\u9ed8\u8ba4\u63a9\u7801\u8bbe\u7f6e\u4e3a0\n    if (mkfifo(FILE_NAME, 0666) &lt; 0){ \/\/\u4f7f\u7528mkfifo\u521b\u5efa\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n        perror(\"mkfifo\");\n        return 1;\n    }\n    int fd = open(FILE_NAME, O_RDONLY); \/\/\u4ee5\u8bfb\u7684\u65b9\u5f0f\u6253\u5f00\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    if (fd &lt; 0){\n        perror(\"open\");\n        return 2;\n    }\n    char msg&#91;128];\n    while (1){\n        msg&#91;0] = '\\0'; \/\/\u6bcf\u6b21\u8bfb\u4e4b\u524d\u5c06msg\u6e05\u7a7a\n        \/\/\u4ece\u547d\u540d\u7ba1\u9053\u5f53\u4e2d\u8bfb\u53d6\u4fe1\u606f\n        ssize_t s = read(fd, msg, sizeof(msg)-1);\n        if (s &gt; 0){\n            msg&#91;s] = '\\0'; \/\/\u624b\u52a8\u8bbe\u7f6e'\\0'\uff0c\u4fbf\u4e8e\u8f93\u51fa\n            printf(\"client# %s\\n\", msg); \/\/\u8f93\u51fa\u5ba2\u6237\u7aef\u53d1\u6765\u7684\u4fe1\u606f\n        }\n        else if (s == 0){\n            printf(\"client quit!\\n\");\n            break;\n        }\n        else{\n            printf(\"read error!\\n\");\n            break;\n        }\n    }\n    close(fd); \/\/\u901a\u4fe1\u5b8c\u6bd5\uff0c\u5173\u95ed\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u800c\u5bf9\u4e8e\u5ba2\u6237\u7aef\u6765\u8bf4\uff0c\u56e0\u4e3a\u670d\u52a1\u7aef\u8fd0\u884c\u8d77\u6765\u540e\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u5c31\u5df2\u7ecf\u88ab\u521b\u5efa\u4e86\uff0c\u6240\u4ee5\u5ba2\u6237\u7aef\u53ea\u9700\u4ee5\u5199\u7684\u65b9\u5f0f\u6253\u5f00\u8be5\u547d\u540d\u7ba1\u9053\u6587\u4ef6\uff0c\u4e4b\u540e\u5ba2\u6237\u7aef\u5c31\u53ef\u4ee5\u5c06\u901a\u4fe1\u4fe1\u606f\u5199\u5165\u5230\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u5f53\u4e2d\uff0c\u8fdb\u800c\u5b9e\u73b0\u4e0e\u670d\u52a1\u7aef\u7684\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>\u5ba2\u6237\u7aef\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/client.c\n#include \"comm.h\"\n\nint main()\n{\n    int fd = open(FILE_NAME, O_WRONLY); \/\/\u4ee5\u5199\u7684\u65b9\u5f0f\u6253\u5f00\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    if (fd &lt; 0){\n        perror(\"open\");\n        return 1;\n    }\n    char msg&#91;128];\n    while (1){\n        msg&#91;0] = '\\0'; \/\/\u6bcf\u6b21\u8bfb\u4e4b\u524d\u5c06msg\u6e05\u7a7a\n        printf(\"Please Enter# \"); \/\/\u63d0\u793a\u5ba2\u6237\u7aef\u8f93\u5165\n        fflush(stdout);\n        \/\/\u4ece\u5ba2\u6237\u7aef\u7684\u6807\u51c6\u8f93\u5165\u6d41\u8bfb\u53d6\u4fe1\u606f\n        ssize_t s = read(0, msg, sizeof(msg)-1);\n        if (s &gt; 0){\n            \/\/\u7531\u4e8e\u4ece\u952e\u76d8\u4e0a\u8f93\u5165\u4fe1\u606f\u4f1a\u628a\\n\u8f93\u5165\u8fdb\u6765\uff0c\u6240\u4ee5\u9700\u8981\u7528'\\0'\u5c06\u5176\u8986\u76d6\n            msg&#91;s - 1] = '\\0';\n            \/\/\u5c06\u4fe1\u606f\u5199\u5165\u547d\u540d\u7ba1\u9053\n            write(fd, msg, strlen(msg));\n        }\n    }\n    close(fd); \/\/\u901a\u4fe1\u5b8c\u6bd5\uff0c\u5173\u95ed\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u5bf9\u4e8e\u5982\u4f55\u8ba9\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4f7f\u7528\u540c\u4e00\u4e2a\u547d\u540d\u7ba1\u9053\u6587\u4ef6\uff0c\u8fd9\u91cc\u6211\u4eec\u5c31\u53ef\u4ee5\u8ba9\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u5305\u542b\u540c\u4e00\u4e2a\u5934\u6587\u4ef6\uff0c\u8be5\u5934\u6587\u4ef6\u5f53\u4e2d\u63d0\u4f9b\u7684\u8fd9\u4e2a\u5171\u7528\u7684\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u7684\u6587\u4ef6\u540d\uff0c\u8fd9\u6837\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u5c31\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u6587\u4ef6\u540d\uff0c\u6253\u5f00\u540c\u4e00\u4e2a\u547d\u540d\u7ba1\u9053\u6587\u4ef6\uff0c\u8fdb\u800c\u8fdb\u884c\u901a\u4fe1\u4e86\u3002<\/p>\n\n\n\n<p>\u5171\u7528\u5934\u6587\u4ef6\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/comm.h\n#pragma once\n\n#include &lt;stdio.h&gt;\n#include &lt;unistd.h&gt;\n#include &lt;sys\/types.h&gt;\n#include &lt;sys\/stat.h&gt;\n#include &lt;string.h&gt;\n#include &lt;fcntl.h&gt;\n\n#define FILE_NAME \"myfifo\" \/\/\u8ba9\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u4f7f\u7528\u540c\u4e00\u4e2a\u547d\u540d\u7ba1\u9053<\/code><\/pre>\n\n\n\n<p>\u4ee3\u7801\u7f16\u5199\u5b8c\u6bd5\u540e\uff0c\u5148\u5c06\u670d\u52a1\u7aef\u8fdb\u7a0b\u8fd0\u884c\u8d77\u6765\uff0c\u4e4b\u540e\u6211\u4eec\u5c31\u80fd\u5728\u5ba2\u6237\u7aef\u770b\u5230\u8fd9\u4e2a\u5df2\u7ecf\u88ab\u521b\u5efa\u7684\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167835518263321.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167835518263321.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u63a5\u7740\u518d\u5c06\u5ba2\u6237\u7aef\u4e5f\u8fd0\u884c\u8d77\u6765\uff0c\u6b64\u65f6\u6211\u4eec\u4ece\u5ba2\u6237\u7aef\u5199\u5165\u7684\u4fe1\u606f\u88ab\u5ba2\u6237\u7aef\u5199\u5165\u5230\u547d\u540d\u7ba1\u9053\u5f53\u4e2d\uff0c\u670d\u52a1\u7aef\u518d\u4ece\u547d\u540d\u7ba1\u9053\u5f53\u4e2d\u5c06\u4fe1\u606f\u8bfb\u53d6\u51fa\u6765\u6253\u5370\u5728\u670d\u52a1\u7aef\u7684\u663e\u793a\u5668\u4e0a\uff0c\u8be5\u73b0\u8c61\u8bf4\u660e\u670d\u52a1\u7aef\u662f\u80fd\u591f\u901a\u8fc7\u547d\u540d\u7ba1\u9053\u83b7\u53d6\u5230\u5ba2\u6237\u7aef\u53d1\u6765\u7684\u4fe1\u606f\u7684\uff0c\u6362\u53e5\u8bdd\u8bf4\uff0c\u6b64\u65f6\u8fd9\u4e24\u4e2a\u8fdb\u7a0b\u4e4b\u95f4\u662f\u80fd\u591f\u8fdb\u884c\u901a\u4fe1\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167835556346524.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167835556346524.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u5f53\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u8fd0\u884c\u8d77\u6765\u65f6\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7ps\u547d\u4ee4\u67e5\u770b\u8fd9\u4e24\u4e2a\u8fdb\u7a0b\u7684\u4fe1\u606f\uff0c\u53ef\u4ee5\u53d1\u73b0\u8fd9\u4e24\u4e2a\u8fdb\u7a0b\u786e\u5b9e\u662f\u4e24\u4e2a\u6beb\u4e0d\u76f8\u5173\u7684\u8fdb\u7a0b\uff0c\u56e0\u4e3a\u5b83\u4eec\u7684PID\u548cPPID\u90fd\u4e0d\u76f8\u540c\u3002\u4e5f\u5c31\u8bc1\u660e\u4e86\uff0c\u547d\u540d\u7ba1\u9053\u662f\u53ef\u4ee5\u5b9e\u73b0\u4e24\u4e2a\u6beb\u4e0d\u76f8\u5173\u8fdb\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167835572044627.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167835572044627.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\u4e4b\u95f4\u7684\u9000\u51fa\u5173\u7cfb<\/p>\n<\/blockquote>\n\n\n\n<p>\u5f53\u5ba2\u6237\u7aef\u9000\u51fa\u540e\uff0c\u670d\u52a1\u7aef\u5c06\u7ba1\u9053\u4e2d\u7684\u6570\u636e\u8bfb\u5b8c\u4e86\u5c31\u518d\u4e5f\u8bfb\u4e0d\u5230\u6570\u636e\u4e86\uff0c\u90a3\u4e48\u6b64\u65f6\u670d\u52a1\u7aef\u4e5f\u5c31\u4f1a\u53bb\u6267\u884c\u5b83\u7684\u5176\u4ed6\u4ee3\u7801\u4e86\uff08\u5728\u5f53\u524d\u4ee3\u7801\u4e2d\u662f\u76f4\u63a5\u9000\u51fa\u4e86\uff09\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167835901128830.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167835901128830.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u5f53\u670d\u52a1\u7aef\u9000\u51fa\u540e\uff0c\u5ba2\u6237\u7aef\u5199\u5165\u7ba1\u9053\u7684\u6570\u636e\u5c31\u4e0d\u4f1a\u88ab\u8bfb\u53d6\u4e86\uff0c\u4e5f\u5c31\u6ca1\u6709\u610f\u4e49\u4e86\uff0c\u90a3\u4e48\u5f53\u5ba2\u6237\u7aef\u4e0b\u4e00\u6b21\u518d\u5411\u7ba1\u9053\u4e2d\u5199\u5165\u6570\u636e\u65f6\uff0c\u5c31\u4f1a\u6536\u5230\u64cd\u4f5c\u7cfb\u7edf\u53d1\u6765\u768413\u53f7\u4fe1\u53f7\uff08SIGPIPE\uff09\uff0c\u6b64\u65f6\u5ba2\u6237\u7aef\u5c31\u4f1a\u88ab\u64cd\u4f5c\u7cfb\u7edf\u5f3a\u5236\u6740\u6389\u4e86\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167835916361933.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167835916361933.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u901a\u4fe1\u662f\u5728\u5185\u5b58\u5f53\u4e2d\u8fdb\u884c\u7684<\/p>\n<\/blockquote>\n\n\n\n<p>\u82e5\u662f\u6211\u4eec\u53ea\u662f\u8ba9\u5ba2\u6237\u7aef\u5411\u7ba1\u9053\u4e2d\u5199\u5165\u6570\u636e\uff0c\u800c\u670d\u52a1\u5668\u4e0d\u4ece\u7ba1\u9053\u4e2d\u8bfb\u53d6\u6570\u636e\uff0c\u90a3\u4e48\u8fd9\u4e2a\u7ba1\u9053\u6587\u4ef6\u7684\u5927\u5c0f\u4f1a\u4e0d\u4f1a\u53d1\u751f\u53d8\u5316\u5462\uff1f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/server.c\n#include \"comm.h\"\n\nint main()\n{\n    umask(0); \/\/\u5c06\u6587\u4ef6\u9ed8\u8ba4\u63a9\u7801\u8bbe\u7f6e\u4e3a0\n    if (mkfifo(FILE_NAME, 0666) &lt; 0){ \/\/\u4f7f\u7528mkfifo\u521b\u5efa\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n        perror(\"mkfifo\");\n        return 1;\n    }\n    int fd = open(FILE_NAME, O_RDONLY); \/\/\u4ee5\u8bfb\u7684\u65b9\u5f0f\u6253\u5f00\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    if (fd &lt; 0){\n        perror(\"open\");\n        return 2;\n    }\n    while (1){\n        \/\/\u670d\u52a1\u7aef\u4e0d\u8bfb\u53d6\u7ba1\u9053\u4fe1\u606f\n    }\n    close(fd); \/\/\u901a\u4fe1\u5b8c\u6bd5\uff0c\u5173\u95ed\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u5c3d\u7ba1\u670d\u52a1\u5668\u4e0d\u8bfb\u53d6\u7ba1\u9053\u5f53\u4e2d\u7684\u6570\u636e\uff0c\u4f46\u662f\u7ba1\u9053\u5f53\u4e2d\u7684\u6570\u636e\u5e76\u6ca1\u6709\u88ab\u5237\u65b0\u5230\u78c1\u76d8\uff0c\u4f7f\u7528<code>ll<\/code>\u547d\u4ee4\u770b\u5230\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u7684\u5927\u5c0f\u4f9d\u65e7\u4e3a0\uff0c\u4e5f\u5c31\u8bf4\u660e\u4e86\u53cc\u65b9\u8fdb\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\u4f9d\u65e7\u662f\u5728\u5185\u5b58\u5f53\u4e2d\u8fdb\u884c\u7684\uff0c\u548c\u533f\u540d\u7ba1\u9053\u901a\u4fe1\u662f\u4e00\u6837\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167836239201636.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167836239201636.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u7528\u547d\u540d\u7ba1\u9053\u5b9e\u73b0\u6d3e\u53d1\u8ba1\u7b97\u4efb\u52a1<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\u4e24\u4e2a\u8fdb\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u5e76\u4e0d\u662f\u7b80\u5355\u7684\u53d1\u9001\u5b57\u7b26\u4e32\u800c\u5df2\uff0c\u670d\u52a1\u7aef\u662f\u4f1a\u5bf9\u5ba2\u6237\u7aef\u53d1\u9001\u8fc7\u6765\u7684\u4fe1\u606f\u8fdb\u884c\u67d0\u4e9b\u5904\u7406\u7684\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4eec\u4ee5\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u7aef\u6d3e\u53d1\u8ba1\u7b97\u4efb\u52a1\u4e3a\u4f8b\uff0c\u5ba2\u6237\u7aef\u901a\u8fc7\u7ba1\u9053\u5411\u670d\u52a1\u7aef\u53d1\u9001\u53cc\u64cd\u4f5c\u6570\u7684\u8ba1\u7b97\u8bf7\u6c42\uff0c\u670d\u52a1\u7aef\u63a5\u6536\u5230\u5ba2\u6237\u7aef\u7684\u4fe1\u606f\u540e\u9700\u8981\u8ba1\u7b97\u51fa\u76f8\u5e94\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4eec\u65e0\u9700\u66f4\u6539\u5ba2\u6237\u7aef\u7684\u4ee3\u7801\uff0c\u53ea\u9700\u6539\u53d8\u670d\u52a1\u7aef\u5904\u7406\u901a\u4fe1\u4fe1\u606f\u7684\u903b\u8f91\u5373\u53ef\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/server.c\n#include \"comm.h\"\n\nint main()\n{\n    umask(0); \/\/\u5c06\u6587\u4ef6\u9ed8\u8ba4\u63a9\u7801\u8bbe\u7f6e\u4e3a0\n    if (mkfifo(FILE_NAME, 0666) &lt; 0){ \/\/\u4f7f\u7528mkfifo\u521b\u5efa\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n        perror(\"mkfifo\");\n        return 1;\n    }\n    int fd = open(FILE_NAME, O_RDONLY); \/\/\u6253\u5f00\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    if (fd &lt; 0){\n        perror(\"open\");\n        return 2;\n    }\n    char msg&#91;128];\n    while (1){\n        msg&#91;0] = '\\0'; \/\/\u6bcf\u6b21\u8bfb\u4e4b\u524d\u5c06msg\u6e05\u7a7a\n        \/\/\u4ece\u547d\u540d\u7ba1\u9053\u5f53\u4e2d\u8bfb\u53d6\u4fe1\u606f\n        ssize_t s = read(fd, msg, sizeof(msg)-1);\n        if (s &gt; 0){\n            msg&#91;s] = '\\0'; \/\/\u624b\u52a8\u8bbe\u7f6e'\\0'\uff0c\u4fbf\u4e8e\u8f93\u51fa\n            printf(\"client# %s\\n\", msg);\n            \/\/\u670d\u52a1\u7aef\u8fdb\u884c\u8ba1\u7b97\u4efb\u52a1\n            char* lable = \"+-*\/%\";\n            char* p = msg;\n            int flag = 0;\n            while (*p){\n                switch (*p){\n                case '+':\n                    flag = 0;\n                    break;\n                case '-':\n                    flag = 1;\n                    break;\n                case '*':\n                    flag = 2;\n                    break;\n                case '\/':\n                    flag = 3;\n                    break;\n                case '%':\n                    flag = 4;\n                    break;\n                }\n                p++;\n            }\n            char* data1 = strtok(msg, \"+-*\/%\");\n            char* data2 = strtok(NULL, \"+-*\/%\");\n            int num1 = atoi(data1);\n            int num2 = atoi(data2);\n            int ret = 0;\n            switch (flag){\n            case 0:\n                ret = num1 + num2;\n                break;\n            case 1:\n                ret = num1 - num2;\n                break;\n            case 2:\n                ret = num1 * num2;\n                break;\n            case 3:\n                ret = num1 \/ num2;\n                break;\n            case 4:\n                ret = num1 % num2;\n                break;\n            }\n            printf(\"%d %c %d = %d\\n\", num1, lable&#91;flag], num2, ret); \/\/\u6253\u5370\u8ba1\u7b97\u7ed3\u679c\n        }\n        else if (s == 0){\n            printf(\"client quit!\\n\");\n            break;\n        }\n        else{\n            printf(\"read error!\\n\");\n            break;\n        }\n    }\n    close(fd); \/\/\u901a\u4fe1\u5b8c\u6bd5\uff0c\u5173\u95ed\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u6b64\u65f6\u670d\u52a1\u7aef\u63a5\u6536\u5230\u5ba2\u6237\u7aef\u7684\u4fe1\u606f\u540e\uff0c\u9700\u8981\u8fdb\u884c\u7684\u5904\u7406\u52a8\u4f5c\u5c31\u4e0d\u518d\u662f\u5c06\u5176\u6253\u5370\u5230\u663e\u793a\u5668\u4e86\uff0c\u800c\u662f\u9700\u8981\u5c06\u4fe1\u606f\u7ecf\u8fc7\u8fdb\u4e00\u6b65\u5904\u7406\uff0c\u4ece\u800c\u5f97\u5230\u76f8\u5e94\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167836552463739.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167836552463739.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u7528\u547d\u540d\u7ba1\u9053\u5b9e\u73b0\u8fdb\u7a0b\u9065\u63a7<\/h4>\n\n\n\n<p>\u6bd4\u8f83\u6709\u610f\u601d\u7684\u662f\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e2a\u8fdb\u7a0b\u6765\u63a7\u5236\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u7684\u884c\u4e3a\uff0c\u6bd4\u5982\u6211\u4eec\u4ece\u5ba2\u6237\u7aef\u8f93\u5165\u547d\u4ee4\u5230\u7ba1\u9053\u5f53\u4e2d\uff0c\u518d\u8ba9\u670d\u52a1\u7aef\u5c06\u7ba1\u9053\u5f53\u4e2d\u7684\u547d\u4ee4\u8bfb\u53d6\u51fa\u6765\u5e76\u6267\u884c\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u6211\u4eec\u53ea\u5b9e\u73b0\u4e86\u8ba9\u670d\u52a1\u7aef\u6267\u884c\u4e0d\u5e26\u9009\u9879\u7684\u547d\u4ee4\uff0c\u82e5\u662f\u60f3\u8ba9\u670d\u52a1\u7aef\u6267\u884c\u5e26\u9009\u9879\u7684\u547d\u4ee4\uff0c\u53ef\u4ee5\u5bf9\u7ba1\u9053\u5f53\u4e2d\u83b7\u53d6\u7684\u547d\u4ee4\u8fdb\u884c\u89e3\u6790\u5904\u7406\u3002\u8fd9\u91cc\u7684\u5b9e\u73b0\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8ba9\u670d\u52a1\u7aef\u4ece\u7ba1\u9053\u5f53\u4e2d\u8bfb\u53d6\u547d\u4ee4\u540e\u521b\u5efa\u5b50\u8fdb\u7a0b\uff0c\u7136\u540e\u518d\u8fdb\u884c\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\u5373\u53ef\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u4e5f\u65e0\u9700\u66f4\u6539\u5ba2\u6237\u7aef\u7684\u4ee3\u7801\uff0c\u53ea\u9700\u6539\u53d8\u670d\u52a1\u7aef\u5904\u7406\u901a\u4fe1\u4fe1\u606f\u7684\u903b\u8f91\u5373\u53ef\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include \"comm.h\"\n\nint main()\n{\n    umask(0); \/\/\u5c06\u6587\u4ef6\u9ed8\u8ba4\u63a9\u7801\u8bbe\u7f6e\u4e3a0\n    if (mkfifo(FILE_NAME, 0666) &lt; 0){ \/\/\u4f7f\u7528mkfifo\u521b\u5efa\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n        perror(\"mkfifo\");\n        return 1;\n    }\n    int fd = open(FILE_NAME, O_RDONLY); \/\/\u4ee5\u8bfb\u7684\u65b9\u5f0f\u6253\u5f00\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    if (fd &lt; 0){\n        perror(\"open\");\n        return 2;\n    }\n    char msg&#91;128];\n    while (1){\n        msg&#91;0] = '\\0'; \/\/\u6bcf\u6b21\u8bfb\u4e4b\u524d\u5c06msg\u6e05\u7a7a\n        \/\/\u4ece\u547d\u540d\u7ba1\u9053\u5f53\u4e2d\u8bfb\u53d6\u4fe1\u606f\n        ssize_t s = read(fd, msg, sizeof(msg)-1);\n        if (s &gt; 0){\n            msg&#91;s] = '\\0'; \/\/\u624b\u52a8\u8bbe\u7f6e'\\0'\uff0c\u4fbf\u4e8e\u8f93\u51fa\n            printf(\"client# %s\\n\", msg);\n            if (fork() == 0){\n                \/\/child\n                execlp(msg, msg, NULL); \/\/\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\n                exit(1);\n            }\n            waitpid(-1, NULL, 0); \/\/\u7b49\u5f85\u5b50\u8fdb\u7a0b\n        }\n        else if (s == 0){\n            printf(\"client quit!\\n\");\n            break;\n        }\n        else{\n            printf(\"read error!\\n\");\n            break;\n        }\n    }\n    close(fd); \/\/\u901a\u4fe1\u5b8c\u6bd5\uff0c\u5173\u95ed\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u6b64\u65f6\u670d\u52a1\u7aef\u63a5\u6536\u5230\u5ba2\u6237\u7aef\u7684\u4fe1\u606f\u540e\uff0c\u4fbf\u8fdb\u884c\u8fdb\u7a0b\u7a0b\u5e8f\u66ff\u6362\uff0c\u8fdb\u800c\u6267\u884c\u5ba2\u6237\u7aef\u53d1\u9001\u8fc7\u6765\u7684\u547d\u4ee4\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167836702632342.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167836702632342.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u7528\u547d\u540d\u7ba1\u9053\u5b9e\u73b0\u6587\u4ef6\u62f7\u8d1d<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u8fd9\u91cc\u6211\u4eec\u518d\u7528\u547d\u540d\u7ba1\u9053\u5b9e\u73b0\u4e00\u4e0b\u6587\u4ef6\u7684\u62f7\u8d1d\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u9700\u8981\u62f7\u8d1d\u7684\u6587\u4ef6\u662f<code>file.txt<\/code>\uff0c\u8be5\u6587\u4ef6\u5f53\u4e2d\u7684\u5185\u5bb9\u5982\u4e0b\uff1a<img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167836767699945.png\" alt=\"img\"><\/p>\n\n\n\n<p>\u6211\u4eec\u8981\u505a\u7684\u5c31\u662f\uff0c\u8ba9\u5ba2\u6237\u7aef\u5c06<code>file.txt<\/code>\u6587\u4ef6\u901a\u8fc7\u7ba1\u9053\u53d1\u9001\u7ed9\u670d\u52a1\u7aef\uff0c\u5728\u670d\u52a1\u7aef\u521b\u5efa\u4e00\u4e2a<code>file-bat.txt<\/code>\u6587\u4ef6\uff0c\u5e76\u5c06\u4ece\u7ba1\u9053\u83b7\u53d6\u5230\u7684\u6570\u636e\u5199\u5165<code>file-bat.txt<\/code>\u6587\u4ef6\u5f53\u4e2d\uff0c\u81f3\u6b64\u4fbf\u5b9e\u73b0\u4e86<code>file.txt<\/code>\u6587\u4ef6\u7684\u62f7\u8d1d\u3002<img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167837494123648.png\" alt=\"img\"><\/p>\n\n\n\n<p>\u5176\u4e2d\u670d\u52a1\u7aef\u9700\u8981\u505a\u7684\u5c31\u662f\uff0c\u521b\u5efa\u547d\u540d\u7ba1\u9053\u5e76\u4ee5\u8bfb\u7684\u65b9\u5f0f\u6253\u5f00\u8be5\u547d\u540d\u7ba1\u9053\uff0c\u518d\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a<code>file-bat.txt<\/code>\u7684\u6587\u4ef6\uff0c\u4e4b\u540e\u9700\u8981\u505a\u7684\u5c31\u662f\u5c06\u4ece\u7ba1\u9053\u5f53\u4e2d\u8bfb\u53d6\u5230\u7684\u6570\u636e\u5199\u5165\u5230<code>file-bat.txt<\/code>\u6587\u4ef6\u5f53\u4e2d\u5373\u53ef\u3002<\/p>\n\n\n\n<p>\u670d\u52a1\u7aef\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/server.c\n#include \"comm.h\"\n\nint main()\n{\n    umask(0); \/\/\u5c06\u6587\u4ef6\u9ed8\u8ba4\u63a9\u7801\u8bbe\u7f6e\u4e3a0\n    if (mkfifo(FILE_NAME, 0666) &lt; 0){ \/\/\u4f7f\u7528mkfifo\u521b\u5efa\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n        perror(\"mkfifo\");\n        return 1;\n    }\n    int fd = open(FILE_NAME, O_RDONLY); \/\/\u4ee5\u8bfb\u7684\u65b9\u5f0f\u6253\u5f00\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    if (fd &lt; 0){\n        perror(\"open\");\n        return 2;\n    }\n    \/\/\u521b\u5efa\u6587\u4ef6file-bat.txt\uff0c\u5e76\u4ee5\u5199\u7684\u65b9\u5f0f\u6253\u5f00\u8be5\u6587\u4ef6\n    int fdout = open(\"file-bat.txt\", O_CREAT | O_WRONLY, 0666);\n    if (fdout &lt; 0){\n        perror(\"open\");\n        return 3;\n    }\n    char msg&#91;128];\n    while (1){\n        msg&#91;0] = '\\0'; \/\/\u6bcf\u6b21\u8bfb\u4e4b\u524d\u5c06msg\u6e05\u7a7a\n        \/\/\u4ece\u547d\u540d\u7ba1\u9053\u5f53\u4e2d\u8bfb\u53d6\u4fe1\u606f\n        ssize_t s = read(fd, msg, sizeof(msg)-1);  \n        if (s &gt; 0){\n            write(fdout, msg, s); \/\/\u5c06\u8bfb\u53d6\u5230\u7684\u4fe1\u606f\u5199\u5165\u5230file-bat.txt\u6587\u4ef6\u5f53\u4e2d\n        }\n        else if (s == 0){\n            printf(\"client quit!\\n\");\n            break;\n        }\n        else{\n            printf(\"read error!\\n\");\n            break;\n        }\n    }\n    close(fd); \/\/\u901a\u4fe1\u5b8c\u6bd5\uff0c\u5173\u95ed\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    close(fdout); \/\/\u6570\u636e\u5199\u5165\u5b8c\u6bd5\uff0c\u5173\u95edfile-bat.txt\u6587\u4ef6\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u800c\u5ba2\u6237\u7aef\u9700\u8981\u505a\u7684\u662f\uff0c\u4ee5\u5199\u7684\u65b9\u5f0f\u6253\u5f00\u8fd9\u4e2a\u5df2\u7ecf\u5b58\u5728\u7684\u547d\u540d\u7ba1\u9053\u6587\u4ef6\uff0c\u518d\u4ee5\u8bfb\u7684\u65b9\u5f0f\u6253\u5f00<code>file.txt<\/code>\u6587\u4ef6\uff0c\u4e4b\u540e\u9700\u8981\u505a\u7684\u5c31\u662f\u5c06<code>file.txt<\/code>\u6587\u4ef6\u5f53\u4e2d\u7684\u6570\u636e\u8bfb\u53d6\u51fa\u6765\u5e76\u5199\u5165\u7ba1\u9053\u5f53\u4e2d\u5373\u53ef\u3002<\/p>\n\n\n\n<p>\u5ba2\u6237\u7aef\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/client.c\n#include \"comm.h\"\n\nint main()\n{\n    int fd = open(FILE_NAME, O_WRONLY); \/\/\u4ee5\u5199\u7684\u65b9\u5f0f\u6253\u5f00\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    if (fd &lt; 0){\n        perror(\"open\");\n        return 1;\n    }\n    int fdin = open(\"file.txt\", O_RDONLY); \/\/\u4ee5\u8bfb\u7684\u65b9\u5f0f\u6253\u5f00file.txt\u6587\u4ef6\n    if (fdin &lt; 0){\n        perror(\"open\");\n        return 2;\n    }\n    char msg&#91;128];\n    while (1){\n        \/\/\u4ecefile.txt\u6587\u4ef6\u5f53\u4e2d\u8bfb\u53d6\u6570\u636e\n        ssize_t s = read(fdin, msg, sizeof(msg));\n        if (s &gt; 0){\n            write(fd, msg, s); \/\/\u5c06\u8bfb\u53d6\u5230\u7684\u6570\u636e\u5199\u5165\u5230\u547d\u540d\u7ba1\u9053\u5f53\u4e2d\n        }\n        else if (s == 0){\n            printf(\"read end of file!\\n\");\n             break;\n        }\n        else{\n            printf(\"read error!\\n\");\n            break;\n        }\n    }\n    close(fd); \/\/\u901a\u4fe1\u5b8c\u6bd5\uff0c\u5173\u95ed\u547d\u540d\u7ba1\u9053\u6587\u4ef6\n    close(fdin); \/\/\u6570\u636e\u8bfb\u53d6\u5b8c\u6bd5\uff0c\u5173\u95edfile.txt\u6587\u4ef6\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u5171\u7528\u5934\u6587\u4ef6\u7684\u4ee3\u7801\u548c\u4e4b\u524d\u7684\u4e00\u6837\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/comm.h\n#pragma once\n\n#include &lt;stdio.h&gt;\n#include &lt;unistd.h&gt;\n#include &lt;sys\/types.h&gt;\n#include &lt;sys\/stat.h&gt;\n#include &lt;string.h&gt;\n#include &lt;fcntl.h&gt;\n\n#define FILE_NAME \"myfifo\" \/\/\u8ba9\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u4f7f\u7528\u540c\u4e00\u4e2a\u547d\u540d\u7ba1\u9053<\/code><\/pre>\n\n\n\n<p>\u7f16\u5199\u5b8c\u4ee3\u7801\u540e\uff0c\u5148\u8fd0\u884c\u670d\u52a1\u7aef\uff0c\u5728\u8fd0\u884c\u5ba2\u6237\u7aef\uff0c\u4e00\u77ac\u95f4\u8fd9\u4e24\u4e2a\u8fdb\u7a0b\u5c31\u76f8\u673a\u8fd0\u884c\u7ed3\u675f\u4e86\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167837904145251.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167837904145251.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u6b64\u65f6\u4f7f\u7528<code>ll<\/code>\u547d\u4ee4\u5c31\u53ef\u4ee5\u770b\u5230\uff0c\u5df2\u7ecf\u5b8c\u6210\u4e86<code>file.txt<\/code>\u6587\u4ef6\u7684\u62f7\u8d1d\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167837910612754.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167837910612754.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u4f7f\u7528cat\u547d\u4ee4\u6253\u5370<code>file-bat.txt<\/code>\u6587\u4ef6\u5f53\u4e2d\u7684\u5185\u5bb9\uff0c\u53d1\u73b0\u548c<code>file.txt<\/code>\u6587\u4ef6\u5f53\u4e2d\u7684\u5185\u5bb9\u76f8\u540c\uff0c\u62f7\u8d1d\u6587\u4ef6\u6210\u529f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167837911899357.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167837911899357.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4f7f\u7528\u7ba1\u9053\u5b9e\u73b0\u6587\u4ef6\u7684\u62f7\u8d1d\u6709\u4ec0\u4e48\u610f\u4e49\uff1f<\/p>\n<\/blockquote>\n\n\n\n<p>\u56e0\u4e3a\u8fd9\u91cc\u662f\u4f7f\u7528\u7ba1\u9053\u5728\u672c\u5730\u8fdb\u884c\u7684\u6587\u4ef6\u62f7\u8d1d\uff0c\u6240\u4ee5\u770b\u4f3c\u6ca1\u4ec0\u4e48\u610f\u4e49\uff0c\u4f46\u662f\u6211\u4eec\u82e5\u662f\u5c06\u8fd9\u91cc\u7684\u7ba1\u9053\u60f3\u8c61\u6210\u7f51\u7edc\uff0c\u5c06\u5ba2\u6237\u7aef\u60f3\u8c61\u6210\u201cWindows Xshell\u201d\uff0c\u518d\u5c06\u670d\u52a1\u7aef\u60f3\u8c61\u6210\u201ccentos\u670d\u52a1\u5668\u201d\u3002\u90a3\u6211\u4eec\u6b64\u65f6\u5b9e\u73b0\u7684\u5c31\u662f\u6587\u4ef6\u4e0a\u4f20\u529f\u80fd\uff0c\u82e5\u662f\u5c06\u65b9\u5411\u53cd\u8fc7\u6765\uff0c\u90a3\u4e48\u5b9e\u73b0\u7684\u5c31\u662f\u6587\u4ef6\u4e0b\u8f7d\u7684\u529f\u80fd\u3002<img decoding=\"async\" src=\"https:\/\/img-blog.csdnimg.cn\/de1e07b3a00a411f8aa78b4b1b57f1f8.png?x-oss-process=image\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16\" alt=\"img\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u547d\u540d\u7ba1\u9053\u548c\u533f\u540d\u7ba1\u9053\u7684\u533a\u522b<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u533f\u540d\u7ba1\u9053\u662f\u7531pipe\u51fd\u6570\u521b\u5efa\u5e76\u6253\u5f00\u3002<\/li>\n\n\n\n<li>\u547d\u540d\u7ba1\u9053\u662f\u7531mkfifo\u51fd\u6570\u521b\u5efa\uff0c\u7531open\u51fd\u6570\u6253\u5f00\u3002<\/li>\n\n\n\n<li>FIFO\uff08\u547d\u540d\u7ba1\u9053\uff09\u4e0epipe\uff08\u533f\u540d\u7ba1\u9053\uff09\u4e4b\u95f4\u552f\u4e00\u7684\u533a\u522b\u5728\u4e8e\u5b83\u4eec\u521b\u5efa\u4e0e\u6253\u5f00\u7684\u65b9\u5f0f\u4e0d\u540c\uff0c\u4e00\u65e6\u8fd9\u4e9b\u5de5\u4f5c\u5b8c\u6210\u4e4b\u540e\uff0c\u5b83\u4eec\u5177\u6709\u76f8\u540c\u7684\u8bed\u4e49\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u547d\u4ee4\u884c\u5f53\u4e2d\u7684\u7ba1\u9053<\/h4>\n\n\n\n<p>\u73b0\u6709<code>data.txt<\/code>\u6587\u4ef6\uff0c\u6587\u4ef6\u5f53\u4e2d\u7684\u5185\u5bb9\u5982\u4e0b\uff1a<img decoding=\"async\" src=\"https:\/\/img-blog.csdnimg.cn\/04114a3f37bf4a8a8356320497853add.png?x-oss-process=image\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16\" alt=\"img\"><\/p>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u7ba1\u9053(&#8220;l&#8221;)\u540c\u65f6\u4f7f\u7528cat\u547d\u4ee4\u548cgrep\u547d\u4ee4\uff0c\u8fdb\u800c\u5b9e\u73b0\u6587\u672c\u8fc7\u6ee4\u3002<\/p>\n\n\n\n<p><code>cat data.txt | grep dragon<\/code><\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16784139048483.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16784139048483.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u90a3\u4e48\u547d\u4ee4\u884c\u5f53\u4e2d\u7684\u7ba1\u9053(&#8220;l&#8221;)\u5230\u5e95\u662f\u533f\u540d\u7ba1\u9053\u8fd8\u662f\u547d\u540d\u7ba1\u9053\u5462\uff1f<\/p>\n<\/blockquote>\n\n\n\n<p>\u7531\u4e8e\u533f\u540d\u7ba1\u9053\u53ea\u80fd\u7528\u4e8e\u6709\u4eb2\u7f18\u5173\u7cfb\u7684\u8fdb\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u800c\u547d\u540d\u7ba1\u9053\u53ef\u4ee5\u7528\u4e8e\u4e24\u4e2a\u6beb\u4e0d\u76f8\u5173\u7684\u8fdb\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u56e0\u6b64\u6211\u4eec\u5148\u770b\u770b\u547d\u4ee4\u884c\u5f53\u4e2d\u7528\u7ba1\u9053(&#8220;l&#8221;)\u8fde\u63a5\u8d77\u6765\u7684\u5404\u4e2a\u8fdb\u7a0b\u4e4b\u95f4\u662f\u5426\u5177\u6709\u4eb2\u7f18\u5173\u7cfb\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u901a\u8fc7\u7ba1\u9053(&#8220;l&#8221;)\u8fde\u63a5\u4e86\u4e09\u4e2a\u8fdb\u7a0b\uff0c\u901a\u8fc7ps\u547d\u4ee4\u67e5\u770b\u8fd9\u4e09\u4e2a\u8fdb\u7a0b\u53ef\u4ee5\u53d1\u73b0\uff0c\u8fd9\u4e09\u4e2a\u8fdb\u7a0b\u7684PPID\u662f\u76f8\u540c\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u5b83\u4eec\u662f\u7531\u540c\u4e00\u4e2a\u7236\u8fdb\u7a0b\u521b\u5efa\u7684\u5b50\u8fdb\u7a0b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16784142890396.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16784142890396.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u800c\u5b83\u4eec\u7684\u7236\u8fdb\u7a0b\u5b9e\u9645\u4e0a\u5c31\u662f\u547d\u4ee4\u884c\u89e3\u91ca\u5668\uff0c\u8fd9\u91cc\u4e3a<code>bash<\/code>\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16784143354479.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16784143354479.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u7531\u7ba1\u9053(&#8220;l&#8221;)\u8fde\u63a5\u8d77\u6765\u7684\u5404\u4e2a\u8fdb\u7a0b\u662f\u6709\u4eb2\u7f18\u5173\u7cfb\u7684\uff0c\u5b83\u4eec\u4e4b\u95f4\u4e92\u4e3a\u5144\u5f1f\u8fdb\u7a0b\u3002<img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167841452345812.png\" alt=\"img\"><\/p>\n\n\n\n<p>\u73b0\u5728\u6211\u4eec\u5df2\u7ecf\u77e5\u9053\u4e86\uff0c\u82e5\u662f\u4e24\u4e2a\u8fdb\u7a0b\u4e4b\u95f4\u91c7\u7528\u7684\u662f\u547d\u540d\u7ba1\u9053\uff0c\u90a3\u4e48\u78c1\u76d8\u4e0a\u5fc5\u987b\u6709\u4e00\u4e2a\u5bf9\u5e94\u7684\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u540d\uff0c\u800c\u5b9e\u9645\u4e0a\u6211\u4eec\u5728\u4f7f\u7528\u547d\u4ee4\u7684\u65f6\u5019\u5e76\u4e0d\u5b58\u5728\u7c7b\u4f3c\u7684\u547d\u540d\u7ba1\u9053\u6587\u4ef6\u540d\uff0c\u56e0\u6b64\u547d\u4ee4\u884c\u4e0a\u7684\u7ba1\u9053\u5b9e\u9645\u4e0a\u662f\u533f\u540d\u7ba1\u9053\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">system V\u8fdb\u7a0b\u95f4\u901a\u4fe1<\/h2>\n\n\n\n<p>\u7ba1\u9053\u901a\u4fe1\u7684\u672c\u8d28\u662f\u57fa\u4e8e\u6587\u4ef6\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u64cd\u4f5c\u7cfb\u7edf\u5e76\u6ca1\u6709\u4e3a\u6b64\u505a\u8fc7\u591a\u7684\u8bbe\u8ba1\u5de5\u4f5c\uff0c\u800csystem V IPC\u662f\u64cd\u4f5c\u7cfb\u7edf\u7279\u5730\u8bbe\u8ba1\u7684\u4e00\u79cd\u901a\u4fe1\u65b9\u5f0f\u3002\u4f46\u662f\u4e0d\u7ba1\u600e\u4e48\u6837\uff0c\u5b83\u4eec\u7684\u672c\u8d28\u90fd\u662f\u4e00\u6837\u7684\uff0c\u90fd\u662f\u5728\u60f3\u5c3d\u529e\u6cd5\u8ba9\u4e0d\u540c\u7684\u8fdb\u7a0b\u770b\u5230\u540c\u4e00\u4efd\u7531\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7684\u8d44\u6e90\u3002<\/p>\n\n\n\n<p>system V IPC\u63d0\u4f9b\u7684\u901a\u4fe1\u65b9\u5f0f\u6709\u4ee5\u4e0b\u4e09\u79cd\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>system V \u5171\u4eab\u5185\u5b58<\/li>\n\n\n\n<li>system V \u6d88\u606f\u961f\u5217<\/li>\n\n\n\n<li>system V \u4fe1\u53f7\u91cf<\/li>\n<\/ol>\n\n\n\n<p>\u5176\u4e2d\uff0csystem V\u5171\u4eab\u5185\u5b58\u548csystem V\u6d88\u606f\u961f\u5217\u662f\u4ee5\u4f20\u8f93\u6570\u636e\u4e3a\u76ee\u7684\u7684\uff0c\u800csystem V\u4fe1\u53f7\u91cf\u662f\u4e3a\u4e86\u4fdd\u8bc1\u8fdb\u7a0b\u95f4\u7684\u540c\u6b65\u4e0e\u4e92\u65a5\u800c\u8bbe\u8ba1\u7684\uff0c\u867d\u7136system V\u4fe1\u53f7\u91cf\u548c\u901a\u4fe1\u597d\u50cf\u6ca1\u6709\u76f4\u63a5\u5173\u7cfb\uff0c\u4f46\u5c5e\u4e8e\u901a\u4fe1\u8303\u7574\u3002<\/p>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<p>system V\u5171\u4eab\u961f\u5217\u548c system V\u6d88\u606f\u961f\u5217\u5c31\u7c7b\u4f3c\u4e8e\u624b\u673a\uff0c\u7528\u4e8e\u6c9f\u901a\u4fe1\u606f\uff1bsystem V\u4fe1\u53f7\u91cf\u5c31\u7c7b\u4f3c\u4e8e\u4e0b\u68cb\u6bd4\u8d5b\u65f6\u7528\u5230\u68cb\u949f\uff0c\u7528\u4e8e\u4fdd\u8bc1\u4e24\u4e2a\u68cb\u624b\u4e4b\u95f4\u7684\u540c\u6b65\u4e0e\u4e92\u65a5\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">system V\u5171\u4eab\u5185\u5b58<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u5171\u4eab\u5185\u5b58\u7684\u57fa\u672c\u539f\u7406<\/h4>\n\n\n\n<p>\u5171\u4eab\u5185\u5b58\u8ba9\u4e0d\u540c\u8fdb\u7a0b\u770b\u5230\u540c\u4e00\u4efd\u8d44\u6e90\u7684\u65b9\u5f0f\u5c31\u662f\uff0c\u5728\u7269\u7406\u5185\u5b58\u5f53\u4e2d\u7533\u8bf7\u4e00\u5757\u5185\u5b58\u7a7a\u95f4\uff0c\u7136\u540e\u5c06\u8fd9\u5757\u5185\u5b58\u7a7a\u95f4\u5206\u522b\u4e0e\u5404\u4e2a\u8fdb\u7a0b\u5404\u81ea\u7684\u9875\u8868\u4e4b\u95f4\u5efa\u7acb\u6620\u5c04\u5173\u7cfb\uff0c\u518d\u5728\u865a\u62df\u5730\u5740\u7a7a\u95f4\u5f53\u4e2d\u5f00\u8f9f\u7a7a\u95f4\u5e76\u5c06\u865a\u62df\u5730\u5740\u586b\u5145\u5230\u5404\u81ea\u9875\u8868\u7684\u5bf9\u5e94\u4f4d\u7f6e\uff0c\u4f7f\u5f97\u865a\u62df\u7a7a\u95f4\u548c\u7269\u7406\u5185\u5b58\u4e4b\u95f4\u5efa\u7acb\u8d77\u5bf9\u5e94\u5173\u7cfb\uff0c\u81f3\u6b64\u8fd9\u4e9b\u8fdb\u7a0b\u4fbf\u770b\u5230\u4e86\u540c\u4e00\u4efd\u7269\u7406\u5185\u5b58\uff0c\u8fd9\u5757\u7269\u7406\u5185\u5b58\u5c31\u53eb\u505a\u5171\u4eab\u961f\u5217\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167841563778415.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167841563778415.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n\n\n\n<p>\u8fd9\u91cc\u6240\u8bf4\u7684\u5f00\u8f9f\u7269\u7406\u7a7a\u95f4\u3001\u5efa\u7acb\u6620\u5c04\u7b49\u64cd\u4f5c\u90fd\u662f\u8c03\u7528\u7cfb\u7edf\u63a5\u53e3\u5b8c\u6210\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u8fd9\u4e9b\u52a8\u4f5c\u90fd\u662f\u7531\u64cd\u4f5c\u7cfb\u7edf\u6765\u5b8c\u6210\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5171\u4eab\u5185\u5b58\u6570\u636e\u7ed3\u6784<\/h4>\n\n\n\n<p>\u5728\u7cfb\u7edf\u5f53\u4e2d\u53ef\u80fd\u4f1a\u6709\u5927\u91cf\u7684\u8fdb\u7a0b\u5728\u8fdb\u884c\u901a\u4fe1\uff0c\u56e0\u6b64\u7cfb\u7edf\u5f53\u4e2d\u5c31\u53ef\u80fd\u5b58\u5728\u5927\u91cf\u7684\u5171\u4eab\u5185\u5b58\uff0c\u90a3\u4e48\u64cd\u4f5c\u7cfb\u7edf\u5fc5\u987b\u8981\u5bf9\u5176\u8fdb\u884c\u7ba1\u7406\uff0c\u6240\u4ee5\u5171\u4eab\u5185\u5b58\u9664\u4e86\u5728\u5185\u5b58\u5f53\u4e2d\u771f\u6b63\u5f00\u8f9f\u7a7a\u95f4\u4e4b\u5916\uff0c\u7cfb\u7edf\u8fd8\u4e00\u5b9a\u8981\u4e3a\u5171\u4eab\u5185\u5b58\u7ef4\u62a4\u76f8\u5173\u7684\u5185\u6838\u6570\u636e\u7ed3\u6784\u3002<\/p>\n\n\n\n<p>\u5171\u4eab\u5185\u5b58\u6570\u636e\u7ed3\u6784\u7ed9\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>struct shmid_ds {\n    struct ipc_perm     shm_perm;   \/* operation perms *\/\n    int         shm_segsz;  \/* size of segment (bytes) *\/\n    __kernel_time_t     shm_atime;  \/* last attach time *\/\n    __kernel_time_t     shm_dtime;  \/* last detach time *\/\n    __kernel_time_t     shm_ctime;  \/* last change time *\/\n    __kernel_ipc_pid_t  shm_cpid;   \/* pid of creator *\/\n    __kernel_ipc_pid_t  shm_lpid;   \/* pid of last operator *\/\n    unsigned short      shm_nattch; \/* no. of current attaches *\/\n    unsigned short      shm_unused; \/* compatibility *\/\n    void            *shm_unused2;   \/* ditto - used by DIPC *\/\n    void            *shm_unused3;   \/* unused *\/\n};<\/code><\/pre>\n\n\n\n<p>\u5f53\u6211\u4eec\u7533\u8bf7\u4e86\u4e00\u5757\u5185\u5b58\u540e\uff0c\u4e3a\u4e86\u8ba9\u8981\u5b9e\u73b0\u901a\u4fe1\u7684\u8fdb\u7a0b\u80fd\u591f\u770b\u5230\u540c\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\uff0c\u56e0\u6b64\u6bcf\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u88ab\u7533\u8bf7\u65f6\u90fd\u6709\u4e00\u4e2akey\u503c\uff0c\u8fd9\u4e2akey\u503c\u7528\u4e8e\u6807\u8bc6\u7cfb\u7edf\u4e2d\u5171\u4eab\u5185\u5b58\u7684\u552f\u4e00\u6027\u3002<\/p>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u4e0a\u9762\u5171\u4eab\u5185\u5b58\u6570\u636e\u7ed3\u6784\u7684\u7b2c\u4e00\u4e2a\u6210\u5458\u662f<code>shm_perm<\/code>\uff0c<code>shm_perm<\/code>\u662f\u4e00\u4e2a<code>ipc_perm<\/code>\u7c7b\u578b\u7684\u7ed3\u6784\u4f53\u53d8\u91cf\uff0c\u6bcf\u4e2a\u5171\u4eab\u5185\u5b58\u7684key\u503c\u5b58\u50a8\u5728<code>shm_perm<\/code>\u8fd9\u4e2a\u7ed3\u6784\u4f53\u53d8\u91cf\u5f53\u4e2d\uff0c\u5176\u4e2d<code>ipc_perm<\/code>\u7ed3\u6784\u4f53\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>struct ipc_perm{\n    __kernel_key_t  key;\n    __kernel_uid_t  uid;\n    __kernel_gid_t  gid;\n    __kernel_uid_t  cuid;\n    __kernel_gid_t  cgid;\n    __kernel_mode_t mode;\n    unsigned short  seq;\n};<\/code><\/pre>\n\n\n\n<p><strong>\u8bb0\u5f55\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<p>\u5171\u4eab\u5185\u5b58\u7684\u6570\u636e\u7ed3\u6784<code>shmid_ds<\/code>\u548c<code>ipc_term<\/code>\u7ed3\u6784\u4f53\u5206\u522b\u5728\/usr\/include\/linux\/shm.h\u548c\/usr\/include\/linux\/ipc.h\u4e2d\u5b9a\u4e49\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5171\u4eab\u5185\u5b58\u7684\u5efa\u7acb\u4e0e\u91ca\u653e<\/h4>\n\n\n\n<p>\u5171\u4eab\u5185\u5b58\u7684\u5efa\u7acb\u5927\u81f4\u5305\u62ec\u4ee5\u4e0b\u4e24\u4e2a\u8fc7\u7a0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5728\u7269\u7406\u5185\u5b58\u5f53\u4e2d\u7533\u8bf7\u5171\u4eab\u5185\u5b58\u7a7a\u95f4\u3002<\/li>\n\n\n\n<li>\u5c06\u7533\u8bf7\u5230\u7684\u5171\u4eab\u5185\u5b58\u6302\u63a5\u5230\u5730\u5740\u7a7a\u95f4\uff0c\u5373\u5efa\u7acb\u6620\u5c04\u5173\u7cfb\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5171\u4eab\u5185\u5b58\u7684\u91ca\u653e\u5927\u81f4\u5305\u62ec\u4ee5\u4e0b\u4e24\u4e2a\u8fc7\u7a0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5c06\u5171\u4eab\u5185\u5b58\u4e0e\u5730\u5740\u7a7a\u95f4\u53bb\u5173\u8054\uff0c\u5373\u53d6\u6d88\u6620\u5c04\u5173\u7cfb\u3002<\/li>\n\n\n\n<li>\u91ca\u653e\u5171\u4eab\u5185\u5b58\u7a7a\u95f4\uff0c\u5373\u5c06\u7269\u7406\u5185\u5b58\u5f52\u8fd8\u7ed9\u64cd\u4f5c\u7cfb\u7edf\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u5171\u4eab\u5185\u5b58\u7684\u521b\u5efa<\/h4>\n\n\n\n<p>\u521b\u5efa\u5171\u4eab\u5185\u5b58\u6211\u4eec\u9700\u8981\u7528shmget\u51fd\u6570\uff0cshmget\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int shmget(key_t key, size_t size, int shmflg);<\/code><\/pre>\n\n\n\n<p>shmget\u51fd\u6570\u7684\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c\u4e00\u4e2a\u53c2\u6570key\uff0c\u8868\u793a\u5f85\u521b\u5efa\u5171\u4eab\u5185\u5b58\u5728\u7cfb\u7edf\u5f53\u4e2d\u7684\u552f\u4e00\u6807\u8bc6\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u4e2a\u53c2\u6570size\uff0c\u8868\u793a\u5f85\u521b\u5efa\u5171\u4eab\u5185\u5b58\u7684\u5927\u5c0f\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e09\u4e2a\u53c2\u6570shmflg\uff0c\u8868\u793a\u521b\u5efa\u5171\u4eab\u5185\u5b58\u7684\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n\n\n\n<p>shmget\u51fd\u6570\u7684\u8fd4\u56de\u503c\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>shmget\u8c03\u7528\u6210\u529f\uff0c\u8fd4\u56de\u4e00\u4e2a\u6709\u6548\u7684\u5171\u4eab\u5185\u5b58\u6807\u8bc6\u7b26\uff08\u7528\u6237\u5c42\u6807\u8bc6\u7b26\uff09\u3002<\/li>\n\n\n\n<li>shmget\u8c03\u7528\u5931\u8d25\uff0c\u8fd4\u56de-1\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong> \u6211\u4eec\u628a\u5177\u6709\u6807\u5b9a\u67d0\u79cd\u8d44\u6e90\u80fd\u529b\u7684\u4e1c\u897f\u53eb\u505a\u53e5\u67c4\uff0c\u800c\u8fd9\u91ccshmget\u51fd\u6570\u7684\u8fd4\u56de\u503c\u5b9e\u9645\u4e0a\u5c31\u662f\u5171\u4eab\u5185\u5b58\u7684\u53e5\u67c4\uff0c\u8fd9\u4e2a\u53e5\u67c4\u5728\u7528\u6237\u5c42\u6807\u8bc6\u5171\u4eab\u5185\u5b58\uff0c\u5f53\u5171\u4eab\u5185\u5b58\u88ab\u521b\u5efa\u540e\uff0c\u6211\u4eec\u5728\u540e\u7eed\u4f7f\u7528\u5171\u4eab\u5185\u5b58\u7684\u76f8\u5173\u63a5\u53e3\u65f6\uff0c\u90fd\u662f\u9700\u8981\u901a\u8fc7\u8fd9\u4e2a\u53e5\u67c4\u5bf9\u6307\u5b9a\u5171\u4eab\u5185\u5b58\u8fdb\u884c\u5404\u79cd\u64cd\u4f5c\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4f20\u5165shmget\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570key\uff0c\u9700\u8981\u6211\u4eec\u4f7f\u7528ftok\u51fd\u6570\u8fdb\u884c\u83b7\u53d6<\/p>\n<\/blockquote>\n\n\n\n<p>ftok\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>key_t ftok(const char* pathname, int proj_id);<\/code><\/pre>\n\n\n\n<p>ftok\u51fd\u6570\u7684\u4f5c\u7528\u5c31\u662f\uff0c\u5c06\u4e00\u4e2a\u5df2\u5b58\u5728\u7684\u8def\u5f84\u540dpathname\u548c\u4e00\u4e2a\u6574\u6570\u6807\u8bc6\u7b26proj_id\u8f6c\u6362\u6210\u4e00\u4e2akey\u503c\uff0c\u79f0\u4e3aIPC\u952e\u503c\uff0c\u5728\u4f7f\u7528shmget\u51fd\u6570\u83b7\u53d6\u5171\u4eab\u5185\u5b58\u65f6\uff0c\u8fd9\u4e2akey\u503c\u4f1a\u88ab\u586b\u5145\u8fdb\u7ef4\u62a4\u5171\u4eab\u5185\u5b58\u7684\u6570\u636e\u7ed3\u6784\u5f53\u4e2d\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cpathname\u6240\u6307\u5b9a\u7684\u6587\u4ef6\u5fc5\u987b\u5b58\u5728\u4e14\u53ef\u5b58\u53d6\u3002<\/p>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4f7f\u7528ftok\u51fd\u6570\u751f\u6210\u7684key\u503c\u53ef\u80fd\u4f1a\u4ea7\u751f\u51b2\u7a81\uff0c\u6b64\u65f6\u53ef\u4ee5\u5bf9\u4f20\u5165ftok\u51fd\u6570\u7684\u53c2\u6570\u8fdb\u884c\u4fee\u6539\u3002<\/li>\n\n\n\n<li>\u9700\u8981\u8fdb\u884c\u901a\u4fe1\u7684\u5404\u4e2a\u8fdb\u7a0b\uff0c\u5728\u4f7f\u7528ftok\u51fd\u6570\u83b7\u53d6key\u503c\u65f6\uff0c\u90fd\u9700\u8981\u91c7\u7528\u540c\u6837\u7684\u8def\u5f84\u540d\u548c\u6574\u6570\u6807\u8bc6\u7b26\uff0c\u8fdb\u800c\u751f\u6210\u540c\u4e00\u79cdkey\u503c\uff0c\u7136\u540e\u624d\u80fd\u627e\u5230\u540c\u4e00\u4e2a\u5171\u4eab\u8d44\u6e90\u3002<\/li>\n<\/ol>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4f20\u5165shmget\u51fd\u6570\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570shmflg\uff0c\u5e38\u7528\u7684\u7ec4\u5408\u65b9\u5f0f\u6709\u4ee5\u4e0b\u4e24\u79cd\uff1a<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">\u7ec4\u5408\u65b9\u5f0f<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">IPC_CREAT<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5982\u679c\u5185\u6838\u4e2d\u4e0d\u5b58\u5728\u952e\u503c\u4e0ekey\u76f8\u7b49\u7684\u5171\u4eab\u5185\u5b58\uff0c\u5219\u65b0\u5efa\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u5e76\u8fd4\u56de\u8be5\u5171\u4eab\u5185\u5b58\u7684\u53e5\u67c4\uff1b\u5982\u679c\u5b58\u5728\u8fd9\u6837\u7684\u5171\u4eab\u5185\u5b58\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\u8be5\u5171\u4eab\u5185\u5b58\u7684\u53e5\u67c4<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">IPC_CREAT | IPC_EXCL<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5982\u679c\u5185\u6838\u4e2d\u4e0d\u5b58\u5728\u952e\u503c\u4e0ekey\u76f8\u7b49\u7684\u5171\u4eab\u5185\u5b58\uff0c\u5219\u65b0\u5efa\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u5e76\u8fd4\u56de\u8be5\u5171\u4eab\u5185\u5b58\u7684\u53e5\u67c4\uff1b\u5982\u679c\u5b58\u5728\u8fd9\u6837\u7684\u5171\u4eab\u5185\u5b58\uff0c\u5219\u51fa\u9519\u8fd4\u56de<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u6362\u53e5\u8bdd\u8bf4\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u7ec4\u5408IPC_CREAT\uff0c\u4e00\u5b9a\u4f1a\u83b7\u5f97\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u7684\u53e5\u67c4\uff0c\u4f46\u65e0\u6cd5\u786e\u8ba4\u8be5\u5171\u4eab\u5185\u5b58\u662f\u5426\u662f\u65b0\u5efa\u7684\u5171\u4eab\u5185\u5b58\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528\u7ec4\u5408IPC_CREAT | IPC_EXCL\uff0c\u53ea\u6709shmget\u51fd\u6570\u8c03\u7528\u6210\u529f\u65f6\u624d\u4f1a\u83b7\u5f97\u5171\u4eab\u5185\u5b58\u7684\u53e5\u67c4\uff0c\u5e76\u4e14\u8be5\u5171\u4eab\u5185\u5b58\u4e00\u5b9a\u662f\u65b0\u5efa\u7684\u5171\u4eab\u5185\u5b58\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u81f3\u6b64\u6211\u4eec\u5c31\u53ef\u4ee5\u4f7f\u7528ftok\u548cshmget\u51fd\u6570\u521b\u5efa\u4e00\u5757\u5171\u4eab\u5185\u5b58\u4e86\uff0c\u521b\u5efa\u540e\u6211\u4eec\u53ef\u4ee5\u5c06\u5171\u4eab\u5185\u5b58\u7684key\u503c\u548c\u53e5\u67c4\u8fdb\u884c\u6253\u5370\uff0c\u4ee5\u4fbf\u89c2\u5bdf\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n#include &lt;sys\/types.h&gt; \n#include &lt;sys\/ipc.h&gt; \n#include &lt;sys\/shm.h&gt; \n#include &lt;unistd.h&gt;\n\n#define PATHNAME \"\/home\/cl\/Linuxcode\/IPC\/shm\/server.c\" \/\/\u8def\u5f84\u540d\n\n#define PROJ_ID 0x6666 \/\/\u6574\u6570\u6807\u8bc6\u7b26\n#define SIZE 4096 \/\/\u5171\u4eab\u5185\u5b58\u7684\u5927\u5c0f\n\nint main()\n{\n    key_t key = ftok(PATHNAME, PROJ_ID); \/\/\u83b7\u53d6key\u503c\n    if (key &lt; 0){\n        perror(\"ftok\");\n        return 1;\n    }\n    int shm = shmget(key, SIZE, IPC_CREAT | IPC_EXCL); \/\/\u521b\u5efa\u65b0\u7684\u5171\u4eab\u5185\u5b58\n    if (shm &lt; 0){\n        perror(\"shmget\");\n        return 2;\n    }\n    printf(\"key: %x\\n\", key); \/\/\u6253\u5370key\u503c\n    printf(\"shm: %d\\n\", shm); \/\/\u6253\u5370\u53e5\u67c4\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u8be5\u4ee3\u7801\u7f16\u5199\u5b8c\u6bd5\u8fd0\u884c\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u8f93\u51fa\u7684key\u503c\u548c\u53e5\u67c4\u503c\uff1a<img decoding=\"async\" src=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167842024587418.png\" alt=\"img\"><\/p>\n\n\n\n<p>Linux\u5f53\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>ipcs<\/code>\u547d\u4ee4\u67e5\u770b\u6709\u5173\u8fdb\u7a0b\u95f4\u901a\u4fe1\u8bbe\u65bd\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167842034087921.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167842034087921.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u5355\u72ec\u4f7f\u7528<code>ipcs<\/code>\u547d\u4ee4\u65f6\uff0c\u4f1a\u9ed8\u8ba4\u5217\u51fa\u6d88\u606f\u961f\u5217\u3001\u5171\u4eab\u5185\u5b58\u4ee5\u53ca\u4fe1\u53f7\u91cf\u76f8\u5173\u7684\u4fe1\u606f\uff0c\u82e5\u53ea\u60f3\u67e5\u770b\u5b83\u4eec\u4e4b\u95f4\u67d0\u4e00\u4e2a\u7684\u76f8\u5173\u4fe1\u606f\uff0c\u53ef\u4ee5\u9009\u62e9\u643a\u5e26\u4ee5\u4e0b\u9009\u9879\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>-q\uff1a\u5217\u51fa\u6d88\u606f\u961f\u5217\u76f8\u5173\u4fe1\u606f\u3002<\/li>\n\n\n\n<li>-m\uff1a\u5217\u51fa\u5171\u4eab\u961f\u5217\u76f8\u5173\u4fe1\u606f\u3002<\/li>\n\n\n\n<li>-s\uff1a\u5217\u51fa\u4fe1\u53f7\u91cf\u76f8\u5173\u4fe1\u606f\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4f8b\u5982\uff0c\u643a\u5e26-m\u9009\u9879\u67e5\u770b\u5171\u4eab\u6587\u4ef6\u7684\u76f8\u5173\u4fe1\u606f\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167842052006824.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167842052006824.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u6b64\u65f6\uff0c\u6839\u636e<code>ipcs<\/code>\u547d\u4ee4\u7684\u67e5\u770b\u7ed3\u679c\u548c\u6211\u4eec\u7684\u8f93\u51fa\u7ed3\u679c\u53ef\u4ee5\u786e\u8ba4\uff0c\u5171\u4eab\u5185\u5b58\u5df2\u7ecf\u521b\u5efa\u6210\u529f\u4e86\u3002<\/p>\n\n\n\n<p><code>ipcs<\/code>\u547d\u4ee4\u8f93\u51fa\u7684\u6bcf\u5217\u4fe1\u606f\u7684\u542b\u4e49\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">\u6807\u9898<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u542b\u4e49<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">key<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u7cfb\u7edf\u533a\u522b\u5404\u4e2a\u5171\u4eab\u5185\u5b58\u7684\u552f\u4e00\u6807\u8bc6<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">shmid<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5171\u4eab\u5185\u5b58\u7684\u7528\u6237\u5c42id\uff08\u53e5\u67c4\uff09<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">owner<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5171\u4eab\u5185\u5b58\u7684\u62e5\u6709\u8005\uff08\u7528\u6237\uff09<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">perms<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5171\u4eab\u5185\u5b58\u7684\u6743\u9650<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">bytes<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5171\u4eab\u5185\u5b58\u5927\u5c0f<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">nattch<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5173\u8054\u5171\u4eab\u5185\u5b58\u7684\u8fdb\u7a0b\u6570<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">status<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5171\u4eab\u5185\u5b58\u7684\u72b6\u6001<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong> key\u662f\u5728\u5185\u6838\u5c42\u9762\u4e0a\u4fdd\u8bc1\u5171\u4eab\u5185\u5b58\u552f\u4e00\u6027\u7684\u65b9\u5f0f\uff0c\u800cshmid\u662f\u5728\u7528\u6237\u5c42\u9762\u4e0a\u4fdd\u8bc1\u5171\u4eab\u5185\u5b58\u7684\u552f\u4e00\u6027\uff0ckey\u548cshmid\u4e4b\u95f4\u7684\u5173\u7cfb\u7c7b\u4f3c\u4e8efd\u548cFILE* \u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5171\u4eab\u5185\u5b58\u7684\u91ca\u653e<\/h4>\n\n\n\n<p>\u901a\u8fc7\u4e0a\u9762\u521b\u5efa\u5171\u4eab\u5185\u5b58\u7684\u5b9e\u9a8c\u53ef\u4ee5\u53d1\u73b0\uff0c\u5f53\u6211\u4eec\u7684\u8fdb\u7a0b\u8fd0\u884c\u5b8c\u6bd5\u540e\uff0c\u7533\u8bf7\u7684\u5171\u4eab\u5185\u5b58\u4f9d\u65e7\u5b58\u5728\uff0c\u5e76\u6ca1\u6709\u88ab\u64cd\u4f5c\u7cfb\u7edf\u91ca\u653e\u3002\u5b9e\u9645\u4e0a\uff0c\u7ba1\u9053\u662f\u751f\u547d\u5468\u671f\u662f\u968f\u8fdb\u7a0b\u7684\uff0c\u800c\u5171\u4eab\u5185\u5b58\u7684\u751f\u547d\u5468\u671f\u662f\u968f\u5185\u6838\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u8fdb\u7a0b\u867d\u7136\u5df2\u7ecf\u9000\u51fa\uff0c\u4f46\u662f\u66fe\u7ecf\u521b\u5efa\u7684\u5171\u4eab\u5185\u5b58\u4e0d\u4f1a\u968f\u7740\u8fdb\u7a0b\u7684\u9000\u51fa\u800c\u91ca\u653e\u3002<\/p>\n\n\n\n<p>\u8fd9\u8bf4\u660e\uff0c\u5982\u679c\u8fdb\u7a0b\u4e0d\u4e3b\u52a8\u5220\u9664\u521b\u5efa\u7684\u5171\u4eab\u5185\u5b58\uff0c\u90a3\u4e48\u5171\u4eab\u5185\u5b58\u5c31\u4f1a\u4e00\u76f4\u5b58\u5728\uff0c\u76f4\u5230\u5173\u673a\u91cd\u542f\uff08system V IPC\u90fd\u662f\u5982\u6b64\uff09\uff0c\u540c\u65f6\u4e5f\u8bf4\u660e\u4e86IPC\u8d44\u6e90\u662f\u7531\u5185\u6838\u63d0\u4f9b\u5e76\u7ef4\u62a4\u7684\u3002<\/p>\n\n\n\n<p>\u6b64\u65f6\u6211\u4eec\u82e5\u662f\u8981\u5c06\u521b\u5efa\u7684\u5171\u4eab\u5185\u5b58\u91ca\u653e\uff0c\u6709\u4e24\u4e2a\u65b9\u6cd5\uff0c\u4e00\u5c31\u662f\u4f7f\u7528\u547d\u4ee4\u91ca\u653e\u5171\u4eab\u5185\u5b58\uff0c\u4e8c\u5c31\u662f\u5728\u8fdb\u7a0b\u901a\u4fe1\u5b8c\u6bd5\u540e\u8c03\u7528\u91ca\u653e\u5171\u4eab\u5185\u5b58\u7684\u51fd\u6570\u8fdb\u884c\u91ca\u653e\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4f7f\u7528\u547d\u4ee4\u91ca\u653e\u5171\u4eab\u5185\u5b58\u8d44\u6e90<\/p>\n<\/blockquote>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>ipcrm -m shmid<\/code>\u547d\u4ee4\u91ca\u653e\u6307\u5b9aid\u7684\u5171\u4eab\u5185\u5b58\u8d44\u6e90\u3002<\/p>\n\n\n\n<p><code>ipcrm -m 8<\/code><\/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:\/\/cdn.codergodv.xyz\/20260324134148603.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260324134148603.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong> \u6307\u5b9a\u5220\u9664\u65f6\u4f7f\u7528\u7684\u662f\u5171\u4eab\u5185\u5b58\u7684\u7528\u6237\u5c42id\uff0c\u5373\u5217\u8868\u5f53\u4e2d\u7684shmid\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5b9e\u7528\u7a0b\u5e8f\u91ca\u653e\u5185\u5b58\u8d44\u6e90<\/p>\n<\/blockquote>\n\n\n\n<p>\u63a7\u5236\u5171\u4eab\u5185\u5b58\u6211\u4eec\u9700\u8981\u7528shmctl\u51fd\u6570\uff0cshmctl\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int shmctl(int shmid, int cmd, struct shmid_ds *buf);<\/code><\/pre>\n\n\n\n<p>shmctl\u51fd\u6570\u7684\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c\u4e00\u4e2a\u53c2\u6570shmid\uff0c\u8868\u793a\u6240\u63a7\u5236\u5171\u4eab\u5185\u5b58\u7684\u7528\u6237\u7ea7\u6807\u8bc6\u7b26\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u4e2a\u53c2\u6570cmd\uff0c\u8868\u793a\u5177\u4f53\u7684\u63a7\u5236\u52a8\u4f5c\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e09\u4e2a\u53c2\u6570buf\uff0c\u7528\u4e8e\u83b7\u53d6\u6216\u8bbe\u7f6e\u6240\u63a7\u5236\u5171\u4eab\u5185\u5b58\u7684\u6570\u636e\u7ed3\u6784\u3002<\/li>\n<\/ul>\n\n\n\n<p>shmctl\u51fd\u6570\u7684\u8fd4\u56de\u503c\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>shmctl\u8c03\u7528\u6210\u529f\uff0c\u8fd4\u56de0\u3002<\/li>\n\n\n\n<li>shmctl\u8c03\u7528\u5931\u8d25\uff0c\u8fd4\u56de-1\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5176\u4e2d\uff0c\u4f5c\u4e3ashmctl\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4f20\u5165\u7684\u5e38\u7528\u7684\u9009\u9879\u6709\u4ee5\u4e0b\u4e09\u4e2a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">\u9009\u9879<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">IPC_STAT<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u83b7\u53d6\u5171\u4eab\u5185\u5b58\u7684\u5f53\u524d\u5173\u8054\u503c\uff0c\u6b64\u65f6\u53c2\u6570buf\u4f5c\u4e3a\u8f93\u51fa\u578b\u53c2\u6570<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">IPC_SET<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5728\u8fdb\u7a0b\u6709\u8db3\u591f\u6743\u9650\u7684\u524d\u63d0\u4e0b\uff0c\u5c06\u5171\u4eab\u5185\u5b58\u7684\u5f53\u524d\u5173\u8054\u503c\u8bbe\u7f6e\u4e3abuf\u6240\u6307\u7684\u6570\u636e\u7ed3\u6784\u4e2d\u7684\u503c<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">IPC_RMID<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5220\u9664\u5171\u4eab\u5185\u5b58\u6bb5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u4f8b\u5982\uff0c\u5728\u4ee5\u4e0b\u4ee3\u7801\u5f53\u4e2d\uff0c\u5171\u4eab\u5185\u5b58\u88ab\u521b\u5efa\uff0c\u4e24\u79d2\u540e\u7a0b\u5e8f\u81ea\u52a8\u79fb\u9664\u5171\u4eab\u5185\u5b58\uff0c\u518d\u8fc7\u4e24\u79d2\u7a0b\u5e8f\u5c31\u4f1a\u81ea\u52a8\u9000\u51fa\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n#include &lt;sys\/types.h&gt;\n#include &lt;sys\/ipc.h&gt;\n#include &lt;sys\/shm.h&gt;\n#include &lt;unistd.h&gt;\n\n#define PATHNAME \"\/home\/cl\/Linuxcode\/IPC\/shm\/server.c\" \/\/\u8def\u5f84\u540d\n\n#define PROJ_ID 0x6666 \/\/\u6574\u6570\u6807\u8bc6\u7b26\n#define SIZE 4096 \/\/\u5171\u4eab\u5185\u5b58\u7684\u5927\u5c0f\n\nint main()\n{\n    key_t key = ftok(PATHNAME, PROJ_ID); \/\/\u83b7\u53d6key\u503c\n    if (key &lt; 0){\n        perror(\"ftok\");\n        return 1;\n    }\n    int shm = shmget(key, SIZE, IPC_CREAT | IPC_EXCL); \/\/\u521b\u5efa\u65b0\u7684\u5171\u4eab\u5185\u5b58\n    if (shm &lt; 0){\n        perror(\"shmget\");\n        return 2;\n    }\n    printf(\"key: %x\\n\", key); \/\/\u6253\u5370key\u503c\n    printf(\"shm: %d\\n\", shm); \/\/\u6253\u5370\u53e5\u67c4\n\n    sleep(2);\n    shmctl(shm, IPC_RMID, NULL); \/\/\u91ca\u653e\u5171\u4eab\u5185\u5b58\n    sleep(2);\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u5728\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0c\u4f7f\u7528\u4ee5\u4e0b\u76d1\u63a7\u811a\u672c\u65f6\u523b\u5173\u6ce8\u5171\u4eab\u5185\u5b58\u7684\u8d44\u6e90\u5206\u914d\u60c5\u51b5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;cl@VM-0-15-centos shm]$ while :; do ipcs -m;echo \"###################################\";sleep 1;done<\/code><\/pre>\n\n\n\n<p>\u901a\u8fc7\u76d1\u63a7\u811a\u672c\u53ef\u4ee5\u786e\u5b9a\u5171\u4eab\u5185\u5b58\u786e\u5b9e\u521b\u5efa\u5e76\u4e14\u6210\u529f\u91ca\u653e\u4e86\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16787841592563.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16787841592563.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u5171\u4eab\u5185\u5b58\u7684\u5173\u8054<\/h4>\n\n\n\n<p>\u5c06\u5171\u4eab\u5185\u5b58\u8fde\u63a5\u5230\u8fdb\u7a0b\u5730\u5740\u7a7a\u95f4\u6211\u4eec\u9700\u8981\u7528shmat\u51fd\u6570\uff0cshmat\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void* shmat(int shmid, const void* shmaddr, int shmflg);<\/code><\/pre>\n\n\n\n<p>shmat\u51fd\u6570\u7684\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c\u4e00\u4e2a\u53c2\u6570shmid\uff0c\u8868\u793a\u5f85\u5173\u8054\u5171\u4eab\u5185\u5b58\u7684\u7528\u6237\u7ea7\u6807\u8bc6\u7b26\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u4e2a\u53c2\u6570shmmaddr\uff0c\u6307\u5b9a\u5171\u4eab\u5185\u5b58\u6620\u5c04\u5230\u8fdb\u7a0b\u5730\u5740\u7a7a\u95f4\u67d0\u4e00\u5730\u5740\uff0c\u901a\u5e38\u8bbe\u7f6e\u4e3aNULL\uff0c\u8868\u793a\u8ba9\u5185\u6838\u81ea\u5df1\u51b3\u5b9a\u4e00\u4e2a\u5408\u9002\u7684\u4f4d\u7f6e\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e09\u4e2a\u53c2\u6570shmflg\uff0c\u8868\u793a\u5173\u8054\u5171\u4eab\u5185\u5b58\u65f6\u8bbe\u7f6e\u7684\u67d0\u4e9b\u5c5e\u6027\u3002<\/li>\n<\/ul>\n\n\n\n<p>shmat\u51fd\u6570\u7684\u8fd4\u56de\u503c\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>shmat\u8c03\u7528\u6210\u529f\uff0c\u8fd4\u56de\u5171\u4eab\u5185\u5b58\u6620\u5c04\u5230\u8fdb\u7a0b\u5730\u5740\u7a7a\u95f4\u4e2d\u7684\u8d77\u59cb\u5730\u5740\u3002<\/li>\n\n\n\n<li>shmat\u8c03\u7528\u5931\u8d25\uff0c\u8fd4\u56de(void*)-1\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5176\u4e2d\uff0cshmat\u51fd\u6570\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570\u4f20\u5165\u7684\u5e38\u7528\u9009\u9879\u6709\u4ee5\u4e0b\u4e09\u4e2a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">\u9009\u9879<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">SHM_RDONLY<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u5173\u8054\u5171\u4eab\u5185\u5b58\u540e\u53ea\u8fdb\u884c\u8bfb\u53d6\u64cd\u4f5c<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">SHM_RND<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u82e5shmaddr\u4e0d\u4e3aNULL\uff0c\u5219\u5173\u8054\u5730\u5740\u81ea\u52a8\u5411\u4e0b\u8c03\u6574\u4e3aSHMLBA\u7684\u6574\u6570\u500d\u3002\u516c\u5f0f\uff1ashmaddr-shmaddr%SHMLBA<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">0<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u9ed8\u8ba4\u4e3a\u8bfb\u5199\u6743\u9650<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u8fd9\u65f6\u6211\u4eec\u53ef\u4ee5\u5c1d\u8bd5\u4f7f\u7528shmat\u51fd\u6570\u5bf9\u5171\u4eab\u5185\u5b58\u8fdb\u884c\u5173\u8054\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n#include &lt;sys\/types.h&gt;\n#include &lt;sys\/ipc.h&gt;\n#include &lt;sys\/shm.h&gt;\n#include &lt;unistd.h&gt;\n\n#define PATHNAME \"\/home\/cl\/Linuxcode\/IPC\/shm\/server.c\" \/\/\u8def\u5f84\u540d\n\n#define PROJ_ID 0x6666 \/\/\u6574\u6570\u6807\u8bc6\u7b26\n#define SIZE 4096 \/\/\u5171\u4eab\u5185\u5b58\u7684\u5927\u5c0f\n\nint main()\n{\n    key_t key = ftok(PATHNAME, PROJ_ID); \/\/\u83b7\u53d6key\u503c\n    if (key &lt; 0){\n        perror(\"ftok\");\n        return 1;\n    }\n    int shm = shmget(key, SIZE, IPC_CREAT | IPC_EXCL); \/\/\u521b\u5efa\u65b0\u7684\u5171\u4eab\u5185\u5b58\n    if (shm &lt; 0){\n        perror(\"shmget\");\n        return 2;\n    }\n    printf(\"key: %x\\n\", key); \/\/\u6253\u5370key\u503c\n    printf(\"shm: %d\\n\", shm); \/\/\u6253\u5370\u53e5\u67c4\n\n    printf(\"attach begin!\\n\");\n    sleep(2);\n    char* mem = shmat(shm, NULL, 0); \/\/\u5173\u8054\u5171\u4eab\u5185\u5b58\n    if (mem == (void*)-1){\n        perror(\"shmat\");\n        return 1;\n    }\n    printf(\"attach end!\\n\");\n    sleep(2);\n\n    shmctl(shm, IPC_RMID, NULL); \/\/\u91ca\u653e\u5171\u4eab\u5185\u5b58\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u4ee3\u7801\u8fd0\u884c\u540e\u53d1\u73b0\u5173\u8054\u5931\u8d25\uff0c\u4e3b\u8981\u539f\u56e0\u662f\u6211\u4eec\u4f7f\u7528shmget\u51fd\u6570\u521b\u5efa\u5171\u4eab\u5185\u5b58\u65f6\uff0c\u5e76\u6ca1\u6709\u5bf9\u521b\u5efa\u7684\u5171\u4eab\u5185\u5b58\u8bbe\u7f6e\u6743\u9650\uff0c\u6240\u4ee5\u521b\u5efa\u51fa\u6765\u7684\u5171\u4eab\u5185\u5b58\u7684\u9ed8\u8ba4\u6743\u9650\u4e3a0\uff0c\u5373\u4ec0\u4e48\u6743\u9650\u90fd\u6ca1\u6709\uff0c\u56e0\u6b64server\u8fdb\u7a0b\u6ca1\u6709\u6743\u9650\u5173\u8054\u8be5\u5171\u4eab\u5185\u5b58\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167878665946612.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167878665946612.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u6211\u4eec\u5e94\u8be5\u5728\u4f7f\u7528shmget\u51fd\u6570\u521b\u5efa\u5171\u4eab\u5185\u5b58\u65f6\uff0c\u5728\u5176\u7b2c\u4e09\u4e2a\u53c2\u6570\u5904\u8bbe\u7f6e\u5171\u4eab\u5185\u5b58\u521b\u5efa\u540e\u7684\u6743\u9650\uff0c\u6743\u9650\u7684\u8bbe\u7f6e\u89c4\u5219\u4e0e\u8bbe\u7f6e\u6587\u4ef6\u6743\u9650\u7684\u89c4\u5219\u76f8\u540c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int shm = shmget(key, SIZE, IPC_CREAT | IPC_EXCL | 0666); \/\/\u521b\u5efa\u6743\u9650\u4e3a0666\u7684\u5171\u4eab\u5185\u5b58<\/code><\/pre>\n\n\n\n<p>\u6b64\u65f6\u518d\u8fd0\u884c\u7a0b\u5e8f\uff0c\u5373\u53ef\u53d1\u73b0\u5173\u8054\u8be5\u5171\u4eab\u5185\u5b58\u7684\u8fdb\u7a0b\u6570\u75310\u53d8\u6210\u4e861\uff0c\u800c\u5171\u4eab\u5185\u5b58\u7684\u6743\u9650\u663e\u793a\u4e5f\u4e0d\u518d\u662f0\uff0c\u800c\u662f\u6211\u4eec\u8bbe\u7f6e\u7684666\u6743\u9650\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5171\u4eab\u5185\u5b58\u7684\u53bb\u5173\u8054<\/h4>\n\n\n\n<p>\u53d6\u6d88\u5171\u4eab\u5185\u5b58\u4e0e\u8fdb\u7a0b\u5730\u5740\u7a7a\u95f4\u4e4b\u95f4\u7684\u5173\u8054\u6211\u4eec\u9700\u8981\u7528shmdt\u51fd\u6570\uff0cshmdt\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int shmdt(const void* shmaddr);<\/code><\/pre>\n\n\n\n<p>shmdt\u51fd\u6570\u7684\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f85\u5173\u8054\u5171\u4eab\u5185\u5b58\u7684\u8d77\u59cb\u5730\u5740\uff0c\u5373\u8c03\u7528shmat\u51fd\u6570\u65f6\u5f97\u5230\u7684\u8d77\u59cb\u5730\u5740\u3002<\/li>\n<\/ul>\n\n\n\n<p>shmdt\u51fd\u6570\u7684\u8fd4\u56de\u503c\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>shmdt\u6210\u529f\uff0c\u8fd4\u56de0\u3002<\/li>\n\n\n\n<li>shmdt\u5931\u8d25\uff0c\u8fd4\u56de-1\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u73b0\u5728\u6211\u4eec\u5c31\u80fd\u53d6\u6d88\u5171\u4eab\u5185\u5b58\u4e0e\u8fdb\u7a0b\u4e4b\u95f4\u7684\u5173\u8054\u4e86\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n#include &lt;sys\/types.h&gt;\n#include &lt;sys\/ipc.h&gt;\n#include &lt;sys\/shm.h&gt;\n#include &lt;unistd.h&gt;\n\n#define PATHNAME \"\/home\/cl\/Linuxcode\/IPC\/shm\/server.c\" \/\/\u8def\u5f84\u540d\n\n#define PROJ_ID 0x6666 \/\/\u6574\u6570\u6807\u8bc6\u7b26\n#define SIZE 4096 \/\/\u5171\u4eab\u5185\u5b58\u7684\u5927\u5c0f\n\nint main()\n{\n    key_t key = ftok(PATHNAME, PROJ_ID); \/\/\u83b7\u53d6key\u503c\n    if (key &lt; 0){\n        perror(\"ftok\");\n        return 1;\n    }\n    int shm = shmget(key, SIZE, IPC_CREAT | IPC_EXCL | 0666); \/\/\u521b\u5efa\u65b0\u7684\u5171\u4eab\u5185\u5b58\n    if (shm &lt; 0){\n        perror(\"shmget\");\n        return 2;\n    }\n    printf(\"key: %x\\n\", key); \/\/\u6253\u5370key\u503c\n    printf(\"shm: %d\\n\", shm); \/\/\u6253\u5370\u53e5\u67c4\n\n    printf(\"attach begin!\\n\");\n    sleep(2);\n    char* mem = shmat(shm, NULL, 0); \/\/\u5173\u8054\u5171\u4eab\u5185\u5b58\n    if (mem == (void*)-1){\n        perror(\"shmat\");\n        return 1;\n    }\n    printf(\"attach end!\\n\");\n    sleep(2);\n\n    printf(\"detach begin!\\n\");\n    sleep(2);\n    shmdt(mem); \/\/\u5171\u4eab\u5185\u5b58\u53bb\u5173\u8054\n    printf(\"detach end!\\n\");\n    sleep(2);\n\n    shmctl(shm, IPC_RMID, NULL); \/\/\u91ca\u653e\u5171\u4eab\u5185\u5b58\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u8fd0\u884c\u7a0b\u5e8f\uff0c\u901a\u8fc7\u76d1\u63a7\u5373\u53ef\u53d1\u73b0\u8be5\u5171\u4eab\u5185\u5b58\u7684\u5173\u8054\u6570\u75311\u53d8\u4e3a0\u7684\u8fc7\u7a0b\uff0c\u5373\u53d6\u6d88\u4e86\u5171\u4eab\u5185\u5b58\u4e0e\u8be5\u8fdb\u7a0b\u4e4b\u95f4\u7684\u5173\u8054\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167879116001815.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167879116001815.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong> \u5c06\u5171\u4eab\u5185\u5b58\u4e0e\u5f53\u524d\u8fdb\u7a0b\u8131\u79bb\u4e0d\u7b49\u4e8e\u5220\u9664\u5171\u4eab\u5185\u5b58\uff0c\u53ea\u662f\u53d6\u6d88\u4e86\u5f53\u524d\u8fdb\u7a0b\u4e0e\u8be5\u5171\u4eab\u5185\u5b58\u4e4b\u95f4\u7684\u8054\u7cfb\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7528\u5171\u4eab\u5185\u5b58\u5b9e\u73b0serve&amp;client\u901a\u4fe1<\/h4>\n\n\n\n<p>\u5728\u77e5\u9053\u4e86\u5171\u4eab\u5185\u5b58\u7684\u521b\u5efa\u3001\u5173\u8054\u3001\u53bb\u5173\u8054\u4ee5\u53ca\u91ca\u653e\u540e\uff0c\u73b0\u5728\u53ef\u4ee5\u5c1d\u8bd5\u8ba9\u4e24\u4e2a\u8fdb\u7a0b\u5171\u4eab\u5185\u5b58\u8fdb\u884c\u901a\u4fe1\u4e86\u3002\u5728\u8ba9\u4e24\u4e2a\u8fdb\u7a0b\u8fdb\u884c\u901a\u4fe1\u4e4b\u524d\uff0c\u6211\u4eec\u53ef\u4ee5\u5148\u6d4b\u8bd5\u4e00\u4e0b\u8fd9\u4e24\u4e2a\u8fdb\u7a0b\u80fd\u5426\u6210\u529f\u6302\u63a5\u5230\u540c\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u4e0a\u3002<\/p>\n\n\n\n<p>\u670d\u52a1\u7aef\u8d1f\u8d23\u521b\u5efa\u5171\u4eab\u5185\u5b58\uff0c\u521b\u5efa\u597d\u540e\u5c06\u5171\u4eab\u5185\u5b58\u4e0e\u670d\u52a1\u7aef\u8fdb\u884c\u5173\u8054\uff0c\u4e4b\u540e\u8fdb\u5165\u6b7b\u5faa\u73af\uff0c\u4fbf\u4e8e\u89c2\u5bdf\u670d\u52a1\u7aef\u662f\u5426\u6302\u63a5\u6210\u529f\u3002<\/p>\n\n\n\n<p>\u670d\u52a1\u7aef\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/server.c\n#include \"comm.h\"\n\nint main()\n{\n    key_t key = ftok(PATHNAME, PROJ_ID); \/\/\u83b7\u53d6key\u503c\n    if (key &lt; 0){\n        perror(\"ftok\");\n        return 1;\n    }\n\n    int shm = shmget(key, SIZE, IPC_CREAT | IPC_EXCL | 0666); \/\/\u521b\u5efa\u65b0\u7684\u5171\u4eab\u5185\u5b58\n    if (shm &lt; 0){\n        perror(\"shmget\");\n        return 2;\n    }\n\n    printf(\"key: %x\\n\", key); \/\/\u6253\u5370key\u503c\n    printf(\"shm: %d\\n\", shm); \/\/\u6253\u5370\u5171\u4eab\u5185\u5b58\u7528\u6237\u5c42id\n\n    char* mem = shmat(shm, NULL, 0); \/\/\u5173\u8054\u5171\u4eab\u5185\u5b58\n\n    while (1){\n        \/\/\u4e0d\u8fdb\u884c\u64cd\u4f5c\n    }\n\n    shmdt(mem); \/\/\u5171\u4eab\u5185\u5b58\u53bb\u5173\u8054\n\n    shmctl(shm, IPC_RMID, NULL); \/\/\u91ca\u653e\u5171\u4eab\u5185\u5b58\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u5ba2\u6237\u7aef\u53ea\u9700\u8981\u76f4\u63a5\u548c\u670d\u52a1\u7aef\u521b\u5efa\u7684\u5171\u4eab\u5185\u5b58\u8fdb\u884c\u5173\u8054\u5373\u53ef\uff0c\u4e4b\u540e\u4e5f\u8fdb\u5165\u6b7b\u5faa\u73af\uff0c\u4fbf\u4e8e\u89c2\u5bdf\u5ba2\u6237\u7aef\u662f\u5426\u6302\u63a5\u6210\u529f\u3002<\/p>\n\n\n\n<p>\u5ba2\u6237\u7aef\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/client.c\n#include \"comm.h\"\n\nint main()\n{\n    key_t key = ftok(PATHNAME, PROJ_ID); \/\/\u83b7\u53d6\u4e0eserver\u8fdb\u7a0b\u76f8\u540c\u7684key\u503c\n    if (key &lt; 0){\n        perror(\"ftok\");\n        return 1;\n    }\n    int shm = shmget(key, SIZE, IPC_CREAT); \/\/\u83b7\u53d6server\u8fdb\u7a0b\u521b\u5efa\u7684\u5171\u4eab\u5185\u5b58\u7684\u7528\u6237\u5c42id\n    if (shm &lt; 0){\n        perror(\"shmget\");\n        return 2;\n    }\n\n    printf(\"key: %x\\n\", key); \/\/\u6253\u5370key\u503c\n    printf(\"shm: %d\\n\", shm); \/\/\u6253\u5370\u5171\u4eab\u5185\u5b58\u7528\u6237\u5c42id\n\n    char* mem = shmat(shm, NULL, 0); \/\/\u5173\u8054\u5171\u4eab\u5185\u5b58\n\n    int i = 0;\n    while (1){\n        \/\/\u4e0d\u8fdb\u884c\u64cd\u4f5c\n    }\n\n    shmdt(mem); \/\/\u5171\u4eab\u5185\u5b58\u53bb\u5173\u8054\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u4e3a\u4e86\u8ba9\u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\u5728\u4f7f\u7528ftok\u51fd\u6570\u83b7\u53d6key\u503c\u65f6\uff0c\u80fd\u591f\u5f97\u5230\u540c\u4e00\u79cdkey\u503c\uff0c\u90a3\u4e48\u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\u4f20\u5165ftok\u7684\u51fd\u6570\u7684\u8def\u5f84\u540d\u548c\u6574\u6570\u6807\u8bc6\u7b26\u5fc5\u987b\u76f8\u540c\uff0c\u8fd9\u6837\u624d\u80fd\u751f\u6210\u540c\u4e00\u79cdkey\u503c\uff0c\u8fdb\u800c\u627e\u5230\u540c\u4e00\u4e2a\u5171\u4eab\u8d44\u6e90\u8fdb\u884c\u6302\u63a5\u3002\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u9700\u8981\u5171\u7528\u7684\u4fe1\u606f\u653e\u5165\u4e00\u4e2a\u5934\u6587\u4ef6\u5f53\u4e2d\uff0c\u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\u5171\u7528\u8fd9\u4e2a\u5934\u6587\u4ef6\u5373\u53ef\u3002<\/p>\n\n\n\n<p>\u5171\u7528\u5934\u6587\u4ef6\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/comm.h\n#include &lt;stdio.h&gt;\n#include &lt;stdio.h&gt;\n#include &lt;sys\/types.h&gt;\n#include &lt;sys\/ipc.h&gt;\n#include &lt;sys\/shm.h&gt;\n#include &lt;unistd.h&gt;\n\n#define PATHNAME \"\/home\/cl\/Linuxcode\/IPC\/shm\/server.c\" \/\/\u8def\u5f84\u540d\n\n#define PROJ_ID 0x6666 \/\/\u6574\u6570\u6807\u8bc6\u7b26\n#define SIZE 4096 \/\/\u5171\u4eab\u5185\u5b58\u7684\u5927\u5c0f<\/code><\/pre>\n\n\n\n<p>\u5148\u540e\u8fd0\u884c\u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\u540e\uff0c\u901a\u8fc7\u76d1\u63a7\u811a\u672c\u53ef\u4ee5\u770b\u5230\u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\u6240\u5173\u8054\u7684\u662f\u540c\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\uff0c\u5171\u4eab\u5185\u5b58\u7684\u5173\u8054\u7684\u8fdb\u7a0b\u6570\u4e5f\u662f2\uff0c\u8868\u793a\u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\u6302\u63a5\u5171\u4eab\u5185\u5b58\u6210\u529f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167879402961120.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167879402961120.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u6b64\u65f6\u6211\u4eec\u5c31\u53ef\u4ee5\u8ba9\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u8fdb\u884c\u901a\u4fe1\u4e86\uff0c\u8fd9\u91cc\u4ee5\u7b80\u5355\u7684\u53d1\u9001\u5b57\u7b26\u4e32\u4e3a\u4f8b\u3002<\/p>\n\n\n\n<p>\u5ba2\u6237\u7aef\u4e0d\u65ad\u5411\u5171\u4eab\u5185\u5b58\u5199\u5165\u6570\u636e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u5ba2\u6237\u7aef\u4e0d\u65ad\u5411\u5171\u4eab\u5185\u5b58\u5199\u5165\u6570\u636e\nint i = 0;\nwhile (1){\n    mem&#91;i] = 'A' + i;\n    i++;\n    mem&#91;i] = '\\0';\n    sleep(1);\n}<\/code><\/pre>\n\n\n\n<p>\u670d\u52a1\u7aef\u4e0d\u65ad\u8bfb\u53d6\u5171\u4eab\u5185\u5b58\u5f53\u4e2d\u7684\u6570\u636e\u5e76\u8f93\u51fa\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u670d\u52a1\u7aef\u4e0d\u65ad\u8bfb\u53d6\u5171\u4eab\u5185\u5b58\u5f53\u4e2d\u7684\u6570\u636e\u5e76\u8f93\u51fa\nwhile (1){\n    printf(\"client# %s\\n\", mem);\n    sleep(1);\n}<\/code><\/pre>\n\n\n\n<p>\u6b64\u65f6\u5148\u8fd0\u884c\u670d\u52a1\u7aef\u521b\u5efa\u5171\u4eab\u5185\u5b58\uff0c\u5f53\u6211\u4eec\u8fd0\u884c\u5ba2\u6237\u7aef\u65f6\u670d\u52a1\u7aef\u5c31\u5f00\u59cb\u4e0d\u65ad\u8f93\u51fa\u6570\u636e\uff0c\u8bf4\u660e\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u662f\u80fd\u591f\u6b63\u5e38\u901a\u4fe1\u7684\u3002<\/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:\/\/cdn.codergodv.xyz\/20260324134222835.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260324134222835.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u5171\u4eab\u5185\u5b58\u4e0e\u7ba1\u9053\u8fdb\u884c\u5bf9\u6bd4<\/h4>\n\n\n\n<p>\u5f53\u5171\u4eab\u5185\u5b58\u521b\u5efa\u597d\u540e\u5c31\u4e0d\u518d\u9700\u8981\u8c03\u7528\u7cfb\u7edf\u63a5\u53e3\u8fdb\u884c\u901a\u4fe1\u4e86\uff0c\u800c\u7ba1\u9053\u521b\u5efa\u597d\u540e\u4ecd\u9700\u8981read\u3001write\u7b49\u7cfb\u7edf\u63a5\u53e3\u8fdb\u884c\u901a\u4fe1\u3002\u5b9e\u9645\u4e0a\uff0c\u5171\u4eab\u5185\u5b58\u662f\u6240\u6709\u8fdb\u7a0b\u95f4\u901a\u4fe1\u65b9\u5f0f\u4e2d\u6700\u5feb\u7684\u4e00\u79cd\u901a\u4fe1\u65b9\u5f0f\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u5148\u6765\u770b\u770b\u7ba1\u9053\u901a\u4fe1\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16787960986415.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16787960986415.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u4ece\u8fd9\u5f20\u56fe\u53ef\u4ee5\u770b\u51fa\uff0c\u4f7f\u7528\u7ba1\u9053\u901a\u4fe1\u7684\u65b9\u5f0f\uff0c\u5c06\u4e00\u4e2a\u6587\u4ef6\u4ece\u4e00\u4e2a\u8fdb\u7a0b\u4f20\u8f93\u5230\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u9700\u8981\u8fdb\u884c\u56db\u6b21\u62f7\u8d1d\u64cd\u4f5c\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u670d\u52a1\u7aef\u5c06\u4fe1\u606f\u4ece\u8f93\u5165\u6587\u4ef6\u590d\u5236\u5230\u670d\u52a1\u7aef\u7684\u4e34\u65f6\u7f13\u51b2\u533a\u4e2d\u3002<\/li>\n\n\n\n<li>\u5c06\u670d\u52a1\u7aef\u4e34\u65f6\u7f13\u51b2\u533a\u7684\u4fe1\u606f\u590d\u5236\u5230\u7ba1\u9053\u4e2d\u3002<\/li>\n\n\n\n<li>\u5ba2\u6237\u7aef\u5c06\u4fe1\u606f\u4ece\u7ba1\u9053\u590d\u5236\u5230\u5ba2\u6237\u7aef\u7684\u4e34\u65f6\u7f13\u51b2\u533a\u4e2d\u3002<\/li>\n\n\n\n<li>\u5c06\u5ba2\u6237\u7aef\u4e34\u65f6\u7f13\u51b2\u533a\u7684\u4fe1\u606f\u590d\u5236\u5230\u8f93\u51fa\u6587\u4ef6\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u6211\u4eec\u518d\u6765\u770b\u770b\u5171\u4eab\u5185\u5b58\u901a\u4fe1\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167879652951010.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167879652951010.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u4ece\u8fd9\u5f20\u56fe\u53ef\u4ee5\u770b\u51fa\uff0c\u4f7f\u7528\u5171\u4eab\u5185\u5b58\u8fdb\u884c\u901a\u4fe1\uff0c\u5c06\u4e00\u4e2a\u6587\u4ef6\u4ece\u4e00\u4e2a\u8fdb\u7a0b\u4f20\u8f93\u5230\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u53ea\u9700\u8981\u8fdb\u884c\u4e24\u6b21\u62f7\u8d1d\u64cd\u4f5c\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4ece\u8f93\u5165\u6587\u4ef6\u5230\u5171\u4eab\u5185\u5b58\u3002<\/li>\n\n\n\n<li>\u4ece\u5171\u4eab\u5185\u5b58\u5230\u8f93\u51fa\u6587\u4ef6\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u6240\u4ee5\u8d21\u732e\u5185\u5b58\u662f\u6240\u6709\u8fdb\u7a0b\u95f4\u901a\u4fe1\u65b9\u5f0f\u6700\u5feb\u7684\u4e00\u79cd\u901a\u4fe1\u65b9\u5f0f\uff0c\u56e0\u4e3a\u8be5\u901a\u4fe1\u65b9\u5f0f\u9700\u8981\u8fdb\u884c\u7684\u62f7\u8d1d\u6b21\u6570\u6700\u5c11\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\u5171\u4eab\u5185\u5b58\u4e5f\u6709\u7f3a\u70b9\uff0c\u6211\u4eec\u77e5\u9053\u7ba1\u9053\u662f\u81ea\u5e26\u540c\u6b65\u548c\u4e92\u65a5\u673a\u5236\u7684\uff0c\u4f46\u662f\u5171\u4eab\u5185\u5b58\u5e76\u6ca1\u6709\u63d0\u4f9b\u4efb\u4f55\u7684\u4fdd\u62a4\u673a\u5236\uff0c\u5305\u62ec\u540c\u6b65\u4e0e\u4e92\u65a5\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">System V\u6d88\u606f\u961f\u5217<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u6d88\u606f\u961f\u5217\u7684\u57fa\u672c\u539f\u7406<\/h4>\n\n\n\n<p>\u6d88\u606f\u961f\u5217\u5b9e\u9645\u4e0a\u5c31\u662f\u5728\u7cfb\u7edf\u5f53\u4e2d\u521b\u5efa\u4e00\u4e2a\u961f\u5217\uff0c\u961f\u5217\u5f53\u4e2d\u7684\u6bcf\u4e2a\u6210\u5458\u90fd\u662f\u4e00\u4e2a\u6570\u636e\u5757\uff0c\u8fd9\u4e9b\u6570\u636e\u5757\u90fd\u7531\u7c7b\u578b\u548c\u4fe1\u606f\u4e24\u90e8\u5206\u6784\u6210\uff0c\u4e24\u4e2a\u4e92\u76f8\u901a\u4fe1\u7684\u8fdb\u7a0b\u901a\u8fc7\u67d0\u79cd\u65b9\u5f0f\u770b\u5230\u540c\u4e00\u4e2a\u6d88\u606f\u961f\u5217\uff0c\u8fd9\u4e24\u4e2a\u8fdb\u7a0b\u5411\u5bf9\u65b9\u53d1\u9001\u6570\u636e\u65f6\uff0c\u90fd\u5728\u6d88\u606f\u961f\u5217\u7684\u961f\u5c3e\u6dfb\u52a0\u6570\u636e\u5757\uff0c\u8fd9\u4e24\u4e2a\u8fdb\u7a0b\u83b7\u53d6\u6570\u636e\u5757\u65f6\uff0c\u90fd\u5728\u6d88\u606f\u961f\u5217\u7684\u961f\u5934\u53d6\u6570\u636e\u5757\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167879730109315.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-167879730109315.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u5176\u4e2d\u6d88\u606f\u961f\u5217\u5f53\u4e2d\u7684\u67d0\u4e00\u4e2a\u6570\u636e\u5757\u662f\u7531\u8c01\u53d1\u9001\u7ed9\u8c01\u7684\uff0c\u53d6\u51b3\u4e8e\u6570\u636e\u5757\u7684\u7c7b\u578b\u3002<\/p>\n\n\n\n<p><strong>\u603b\u7ed3\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6d88\u606f\u961f\u5217\u63d0\u4f9b\u4e86\u4e00\u4e2a\u4ece\u4e00\u4e2a\u8fdb\u7a0b\u5411\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u53d1\u9001\u6570\u636e\u5757\u7684\u65b9\u6cd5\u3002<\/li>\n\n\n\n<li>\u6bcf\u4e2a\u6570\u636e\u5757\u90fd\u88ab\u8ba4\u4e3a\u662f\u6709\u4e00\u4e2a\u7c7b\u578b\u7684\uff0c\u63a5\u6536\u8005\u8fdb\u7a0b\u63a5\u6536\u7684\u6570\u636e\u5757\u53ef\u4ee5\u6709\u4e0d\u540c\u7684\u7c7b\u578b\u503c\u3002<\/li>\n\n\n\n<li>\u548c\u5171\u4eab\u5185\u5b58\u4e00\u6837\uff0c\u6d88\u606f\u961f\u5217\u7684\u8d44\u6e90\u4e5f\u5fc5\u987b\u81ea\u884c\u5220\u9664\uff0c\u5426\u5219\u4e0d\u4f1a\u81ea\u52a8\u6e05\u9664\uff0c\u56e0\u4e3asystem V IPC\u8d44\u6e90\u7684\u751f\u547d\u5468\u671f\u662f\u968f\u5185\u6838\u7684\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u6d88\u606f\u961f\u5217\u6570\u636e\u7ed3\u6784<\/h4>\n\n\n\n<p>\u5f53\u7136\uff0c\u7cfb\u7edf\u5f53\u4e2d\u4e5f\u53ef\u80fd\u4f1a\u5b58\u5728\u5927\u91cf\u7684\u6d88\u606f\u961f\u5217\uff0c\u7cfb\u7edf\u4e00\u5b9a\u8981\u4e3a\u6d88\u606f\u961f\u5217\u7ef4\u62a4\u76f8\u5173\u7684\u5185\u6838\u6570\u636e\u7ed3\u6784\u3002<\/p>\n\n\n\n<p>\u6d88\u606f\u961f\u5217\u7684\u6570\u636e\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>struct msqid_ds {\n    struct ipc_perm msg_perm;\n    struct msg *msg_first;      \/* first message on queue,unused  *\/\n    struct msg *msg_last;       \/* last message in queue,unused *\/\n    __kernel_time_t msg_stime;  \/* last msgsnd time *\/\n    __kernel_time_t msg_rtime;  \/* last msgrcv time *\/\n    __kernel_time_t msg_ctime;  \/* last change time *\/\n    unsigned long  msg_lcbytes; \/* Reuse junk fields for 32 bit *\/\n    unsigned long  msg_lqbytes; \/* ditto *\/\n    unsigned short msg_cbytes;  \/* current number of bytes on queue *\/\n    unsigned short msg_qnum;    \/* number of messages in queue *\/\n    unsigned short msg_qbytes;  \/* max number of bytes on queue *\/\n    __kernel_ipc_pid_t msg_lspid;   \/* pid of last msgsnd *\/\n    __kernel_ipc_pid_t msg_lrpid;   \/* last receive pid *\/\n};<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u6d88\u606f\u961f\u5217\u6570\u636e\u7ed3\u6784\u7684\u7b2c\u4e00\u4e2a\u6210\u5458\u662f<code>msg_perm<\/code>\uff0c\u5b83\u548c<code>shm_perm<\/code>\u662f\u540c\u4e00\u4e2a\u7c7b\u578b\u7684\u7ed3\u6784\u4f53\u53d8\u91cf\uff0c<code>ipc_perm<\/code>\u7ed3\u6784\u4f53\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>struct ipc_perm{\n    __kernel_key_t  key;\n    __kernel_uid_t  uid;\n    __kernel_gid_t  gid;\n    __kernel_uid_t  cuid;\n    __kernel_gid_t  cgid;\n    __kernel_mode_t mode;\n    unsigned short  seq;\n};<\/code><\/pre>\n\n\n\n<p><strong>\u8bb0\u5f55\u4e00\u4e0b\uff1a<\/strong><br>\u6d88\u606f\u961f\u5217\u7684\u6570\u636e\u7ed3\u6784<code>msqid_ds<\/code>\u548c<code>ipc_perm<\/code>\u7ed3\u6784\u4f53\u5206\u522b\u5728\/usr\/include\/linux\/msg.h\u548c\/usr\/include\/linux\/ipc.h\u4e2d\u5b9a\u4e49\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6d88\u606f\u961f\u5217\u7684\u521b\u5efa<\/h4>\n\n\n\n<p>\u521b\u5efa\u6d88\u606f\u961f\u5217\u6211\u4eec\u9700\u8981\u7528msgget\u51fd\u6570\uff0cmsgget\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int msgget(key_t key, int msgflg);<\/code><\/pre>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u521b\u5efa\u6d88\u606f\u961f\u5217\u65f6\u4e5f\u9700\u8981\u4f7f\u7528ftok\u51fd\u6570\u751f\u6210\u4e00\u4e2akey\u503c\uff0c\u8fd9\u4e2akey\u503c\u4f5c\u4e3amsgget\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u3002<\/li>\n\n\n\n<li>msgget\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0c\u4e0e\u521b\u5efa\u5171\u4eab\u5185\u5b58\u65f6\u4f7f\u7528\u7684shmget\u51fd\u6570\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570\u76f8\u540c\u3002<\/li>\n\n\n\n<li>\u6d88\u606f\u961f\u5217\u521b\u5efa\u6210\u529f\u65f6\uff0cmsgget\u51fd\u6570\u8fd4\u56de\u7684\u4e00\u4e2a\u6709\u6548\u7684\u6d88\u606f\u961f\u5217\u6807\u8bc6\u7b26\uff08\u7528\u6237\u5c42\u6807\u8bc6\u7b26\uff09\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u6d88\u606f\u961f\u5217\u7684\u91ca\u653e<\/h4>\n\n\n\n<p>\u91ca\u653e\u6d88\u606f\u961f\u5217\u6211\u4eec\u9700\u8981\u4f7f\u7528msgctl\u51fd\u6570\uff0cmsgctl\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int msgctl(int msqid, int cmd, struct msqid_ds *buf);<\/code><\/pre>\n\n\n\n<p><strong>\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong><\/p>\n\n\n\n<p>msgctl\u51fd\u6570\u7684\u53c2\u6570\u4e0e\u91ca\u653e\u5171\u4eab\u5185\u5b58\u65f6\u4f7f\u7528\u7684shmctl\u51fd\u6570\u7684\u4e09\u4e2a\u53c2\u6570\u76f8\u540c\uff0c\u53ea\u4e0d\u8fc7msgctl\u51fd\u6570\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570\u4f20\u5165\u7684\u662f\u6d88\u606f\u961f\u5217\u76f8\u5173\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5411\u6d88\u606f\u961f\u5217\u53d1\u9001\u6570\u636e<\/h4>\n\n\n\n<p>\u5411\u6d88\u606f\u961f\u5217\u53d1\u9001\u6570\u636e\u6211\u4eec\u9700\u8981\u7528msgsnd\u51fd\u6570\uff0cmsgsnd\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int msgsnd(int msqid, const void* msgp, size_t msgsz, int msgflg);<\/code><\/pre>\n\n\n\n<p>msgsnd\u51fd\u6570\u7684\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7b2c\u4e00\u4e2a\u53c2\u6570msqid\uff0c\u8868\u793a\u6d88\u606f\u961f\u5217\u7684\u7528\u6237\u7ea7\u6807\u8bc6\u7b26<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u4e2a\u53c2\u6570msgp\uff0c\u8868\u793a\u5f85\u53d1\u9001\u7684\u6570\u636e\u5757\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e09\u4e2a\u53c2\u6570msgsz\uff0c\u8868\u793a\u6240\u53d1\u9001\u6570\u636e\u5757\u7684\u5927\u5c0f\u3002<\/li>\n\n\n\n<li>\u7b2c\u56db\u4e2a\u53c2\u6570msgflg\uff0c\u8868\u793a\u53d1\u9001\u6570\u636e\u5757\u7684\u65b9\u5f0f\uff0c\u4e00\u822c\u9ed8\u8ba4\u4e3a0\u5373\u53ef\u3002<\/li>\n<\/ol>\n\n\n\n<p>msgsnd\u51fd\u6570\u7684\u8fd4\u56de\u503c\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>msgsnd\u8c03\u7528\u6210\u529f\uff0c\u8fd4\u56de0\u3002<\/li>\n\n\n\n<li>msgsnd\u8c03\u7528\u5931\u8d25\uff0c\u8fd4\u56de-1<\/li>\n<\/ul>\n\n\n\n<p>\u5176\u4e2dmsgsnd\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u5fc5\u987b\u4e3a\u4ee5\u4e0b\u7ed3\u6784\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>struct msgbuf{\n    long mtype;             \/*message type, must be &gt; 0*\/\n    char mtext&#91;1];          \/*message data*\/\n}<\/code><\/pre>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong> \u8be5\u7ed3\u6784\u5f53\u4e2d\u7684\u7b2c\u4e8c\u4e2a\u6210\u5458mtext\u5373\u4e3a\u5f85\u53d1\u9001\u7684\u4fe1\u606f\uff0c\u5f53\u6211\u4eec\u5b9a\u4e49\u8be5\u7ed3\u6784\u4f53\u65f6\uff0cmtext\u7684\u5927\u5c0f\u53ef\u4ee5\u81ea\u5df1\u6307\u5b9a\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u4ece\u6d88\u606f\u961f\u5217\u83b7\u53d6\u6570\u636e<\/h4>\n\n\n\n<p>\u4ece\u6d88\u606f\u961f\u5217\u83b7\u53d6\u6570\u636e\u6211\u4eec\u9700\u8981\u7528msgrcv\u51fd\u6570\uff0cmsgrcv\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ssize_t msgrcv(int msqid, void* msgq, size_t msgsz, long msgtyp, int msgflg);<\/code><\/pre>\n\n\n\n<p>msgrcv\u51fd\u6570\u7684\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c\u4e00\u4e2a\u53c2\u6570msqid\uff0c\u8868\u793a\u6d88\u606f\u961f\u5217\u7684\u7528\u6237\u7ea7\u6807\u8bc6\u7b26\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u4e2a\u53c2\u6570msgq\uff0c\u8868\u793a\u83b7\u53d6\u5230\u7684\u6570\u636e\u5757\uff0c\u662f\u4e00\u4e2a\u8f93\u51fa\u578b\u53c2\u6570\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e09\u4e2a\u53c2\u6570msgsz\uff0c\u8868\u793a\u8981\u83b7\u53d6\u6570\u636e\u5757\u7684\u5927\u5c0f\u3002<\/li>\n\n\n\n<li>\u7b2c\u56db\u4e2a\u53c2\u6570msgtyp\uff0c\u8868\u793a\u8981\u63a5\u9996\u6570\u636e\u5757\u7684\u7c7b\u578b\u3002<\/li>\n<\/ul>\n\n\n\n<p>msgrcv\u51fd\u6570\u7684\u8fd4\u56de\u503c\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>msgsnd\u8c03\u7528\u6210\u529f\uff0c\u8fd4\u56de\u5b9e\u9645\u83b7\u53d6\u5230mtext\u6570\u7ec4\u4e2d\u7684\u5b57\u8282\u6570\u3002<\/li>\n\n\n\n<li>msgsnd\u8c03\u7528\u5931\u8d25\uff0c\u8fd4\u56de-1\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">System V\u4fe1\u53f7\u91cf<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u4fe1\u53f7\u91cf\u76f8\u5173\u6982\u5ff5<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7531\u4e8e\u8fdb\u7a0b\u8981\u6c42\u5171\u4eab\u8d44\u6e90\uff0c\u800c\u4e14\u6709\u4e9b\u8d44\u6e90\u9700\u8981\u4e92\u65a5\u4f7f\u7528\uff0c\u56e0\u6b64\u5404\u8fdb\u7a0b\u4e4b\u95f4\u7ade\u4e89\u4f7f\u7528\u8fd9\u4e9b\u8d44\u6e90\uff0c\u8fdb\u7a0b\u7684\u8fd9\u79cd\u5173\u7cfb\u53eb\u505a\u4e92\u65a5\u3002<\/li>\n\n\n\n<li>\u7cfb\u7edf\u4e2d\u67d0\u4e9b\u8d44\u6e90\u4e00\u6b21\u53ea\u5141\u8bb8\u4e00\u4e2a\u8fdb\u7a0b\u4f7f\u7528\uff0c\u79f0\u8fd9\u6837\u7684\u8d44\u6e90\u4e3a\u4e34\u754c\u8d44\u6e90\u6216\u4e92\u65a5\u8d44\u6e90\u3002<\/li>\n\n\n\n<li>\u5728\u8fdb\u7a0b\u4e2d\u6d89\u53ca\u5230\u4e34\u754c\u8d44\u6e90\u7684\u7a0b\u5e8f\u6bb5\u53eb\u4e34\u754c\u533a\u3002<\/li>\n\n\n\n<li>IPC\u8d44\u6e90\u5fc5\u987b\u5220\u9664\uff0c\u5426\u5219\u4e0d\u4f1a\u81ea\u52a8\u5220\u9664\uff0c\u56e0\u4e3asystem V IPC\u7684\u751f\u547d\u5468\u671f\u968f\u5185\u6838\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4fe1\u53f7\u91cf\u6570\u636e\u7ed3\u6784<\/h4>\n\n\n\n<p>\u5728\u7cfb\u7edf\u5f53\u4e2d\u4e5f\u4e3a\u4fe1\u53f7\u91cf\u7ef4\u62a4\u4e86\u76f8\u5173\u7684\u5185\u6838\u6570\u636e\u7ed3\u6784\u3002<\/p>\n\n\n\n<p>\u4fe1\u53f7\u91cf\u7684\u6570\u636e\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>struct semid_ds {\n    struct ipc_perm sem_perm;       \/* permissions .. see ipc.h *\/\n    __kernel_time_t sem_otime;      \/* last semop time *\/\n    __kernel_time_t sem_ctime;      \/* last change time *\/\n    struct sem  *sem_base;      \/* ptr to first semaphore in array *\/\n    struct sem_queue *sem_pending;      \/* pending operations to be processed *\/\n    struct sem_queue **sem_pending_last;    \/* last pending operation *\/\n    struct sem_undo *undo;          \/* undo requests on this array *\/\n    unsigned short  sem_nsems;      \/* no. of semaphores in array *\/\n};<\/code><\/pre>\n\n\n\n<p>\u4fe1\u53f7\u91cf\u6570\u636e\u7ed3\u6784\u7684\u7b2c\u4e00\u4e2a\u6210\u5458\u4e5f\u662f<code>ipc_perm<\/code>\u7c7b\u578b\u7684\u7ed3\u6784\u4f53\u53d8\u91cf\uff0c<code>ipc_perm<\/code>\u7ed3\u6784\u4f53\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>struct ipc_perm{\n    __kernel_key_t  key;\n    __kernel_uid_t  uid;\n    __kernel_gid_t  gid;\n    __kernel_uid_t  cuid;\n    __kernel_gid_t  cgid;\n    __kernel_mode_t mode;\n    unsigned short  seq;\n};<\/code><\/pre>\n\n\n\n<p><strong>\u8bb0\u5f55\u4e00\u4e0b\uff1a<\/strong><br>\u5171\u4eab\u5185\u5b58\u7684\u6570\u636e\u7ed3\u6784<code>msqid_ds<\/code>\u548c<code>ipc_perm<\/code>\u7ed3\u6784\u4f53\u5206\u522b\u5728\/usr\/include\/linux\/sem.h\u548c\/usr\/include\/linux\/ipc.h\u4e2d\u5b9a\u4e49\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u4fe1\u53f7\u91cf\u76f8\u5173\u51fd\u6570<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4fe1\u53f7\u91cf\u96c6\u7684\u521b\u5efa<\/p>\n<\/blockquote>\n\n\n\n<p>\u521b\u5efa\u4fe1\u53f7\u91cf\u96c6\u6211\u4eec\u9700\u8981\u7528semget\u51fd\u6570\uff0csemget\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>&#8220;`c<br>int semget(key_t key, int nsems, int semflg);<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>**\u8bf4\u660e\u4e00\u4e0b\uff1a**\n\n1. \u521b\u5efa\u4fe1\u53f7\u91cf\u96c6\u4e5f\u9700\u8981\u4f7f\u7528ftok\u51fd\u6570\u751f\u6210\u4e00\u4e2akey\u503c\uff0c\u8fd9\u4e2akey\u503c\u4f5c\u4e3asemget\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u3002\n2. semget\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570nsems\uff0c\u8868\u793a\u521b\u5efa\u4fe1\u53f7\u91cf\u4e2a\u6570\u3002\n3. semget\u51fd\u6570\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570\uff0c\u4e0e\u521b\u5efa\u5171\u4eab\u5185\u5b58\u65f6\u4f7f\u7528shmget\u51fd\u6570\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570\u76f8\u540c\u3002\n4. \u4fe1\u53f7\u91cf\u96c6\u521b\u5efa\u6210\u529f\u65f6\uff0csemget\u51fd\u6570\u8fd4\u56de\u7684\u4e00\u4e2a\u6709\u6548\u7684\u4fe1\u53f7\u91cf\u96c6\u6807\u8bc6\u7b26\uff08\u7528\u6237\u5c42\u6807\u8bc6\u7b26\uff09\u3002\n\n&gt; \u4fe1\u53f7\u91cf\u96c6\u7684\u5220\u9664\n\n\u5220\u9664\u4fe1\u53f7\u91cf\u96c6\u6211\u4eec\u9700\u8981\u7528semctl\u51fd\u6570\uff0csemctl\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/code><\/pre>\n\n\n\n<p>c<br>int semctl(int semid, int semnum, int cmd, \u2026);<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&gt; \u4fe1\u53f7\u91cf\u96c6\u7684\u64cd\u4f5c\n\n\u5bf9\u4fe1\u53f7\u91cf\u7ea7\u8fdb\u884c\u64cd\u4f5c\u6211\u4eec\u9700\u8981\u7528semop\u51fd\u6570\uff0csemop\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/code><\/pre>\n\n\n\n<p>c<br>int semop(int semid, struct sembuf* sops, unsigned nsops);<br>&#8220;`<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8fdb\u7a0b\u4e92\u65a5<\/h4>\n\n\n\n<p>\u8fdb\u7a0b\u95f4\u901a\u4fe1\u901a\u8fc7\u5171\u4eab\u8d44\u6e90\u6765\u5b9e\u73b0\uff0c\u8fd9\u867d\u7136\u89e3\u51b3\u4e86\u901a\u4fe1\u95ee\u9898\uff0c\u4f46\u662f\u4e5f\u5f15\u5165\u4e86\u65b0\u7684\u95ee\u9898\uff0c\u90a3\u5c31\u662f\u901a\u4fe1\u8fdb\u7a0b\u95f4\u5171\u7528\u7684\u4e34\u754c\u8d44\u6e90\uff0c\u82e5\u662f\u4e0d\u5bf9\u4e34\u754c\u8d44\u6e90\u8fdb\u884c\u4fdd\u62a4\uff0c\u5c31\u53ef\u80fd\u4ea7\u751f\u5404\u4e2a\u8fdb\u7a0b\u4ece\u4e34\u754c\u8d44\u6e90\u83b7\u53d6\u7684\u6570\u636e\u4e0d\u4e00\u81f4\u7b49\u95ee\u9898\u3002<\/p>\n\n\n\n<p>\u4fdd\u62a4\u4e34\u754c\u8d44\u6e90\u7684\u672c\u8d28\u662f\u4fdd\u62a4\u4e34\u754c\u533a\uff0c\u6211\u4eec\u628a\u8fdb\u7a0b\u4ee3\u7801\u4e2d\u8bbf\u95ee\u4e34\u754c\u8d44\u6e90\u7684\u4ee3\u7801\u79f0\u4e4b\u4e3a\u4e34\u754c\u533a\uff0c\u4fe1\u53f7\u91cf\u5c31\u662f\u7528\u6765\u4fdd\u62a4\u4e34\u754c\u533a\u7684\uff0c\u4fe1\u53f7\u91cf\u5206\u4e3a\u4e8c\u5143\u4fe1\u53f7\u91cf\u548c\u591a\u5143\u4fe1\u53f7\u91cf\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u5f53\u524d\u6709\u4e00\u5757\u5927\u5c0f\u4e3a100\u5b57\u8282\u7684\u8d44\u6e90\uff0c\u6211\u4eec\u82e5\u662f\u4ee525\u5b57\u8282\u4e3a\u4e00\u4efd\uff0c\u90a3\u4e48\u8be5\u8d44\u6e90\u53ef\u4ee5\u88ab\u5206\u4e3a4\u4efd\uff0c\u90a3\u4e48\u6b64\u65f6\u8fd9\u5757\u8d44\u6e90\u53ef\u4ee5\u75314\u4e2a\u4fe1\u53f7\u91cf\u8fdb\u884c\u6807\u8bc6\u3002<\/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:\/\/cdn.codergodv.xyz\/20260324134243539.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/20260324134243539.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u4fe1\u53f7\u91cf\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u8ba1\u6570\u5668\uff0c\u5728\u4e8c\u5143\u4fe1\u53f7\u91cf\u4e2d\uff0c\u4fe1\u53f7\u91cf\u7684\u4e2a\u6570\u4e3a1\uff08\u76f8\u5f53\u4e8e\u5c06\u4e34\u754c\u8d44\u6e90\u770b\u6210\u4e00\u6574\u5757\uff09\uff0c\u4e8c\u5143\u4fe1\u53f7\u91cf\u672c\u8d28\u89e3\u51b3\u4e86\u4e34\u754c\u8d44\u6e90\u7684\u4e92\u65a5\u95ee\u9898\uff0c\u4ee5\u4e0b\u9762\u7684\u4f2a\u4ee3\u7801\u8fdb\u884c\u89e3\u91ca\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16788081153273.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16788081153273.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u6839\u636e\u4ee5\u4e0a\u4ee3\u7801\uff0c\u5f53\u8fdb\u7a0bA\u7533\u8bf7\u8bbf\u95ee\u5171\u4eab\u5185\u5b58\u8d44\u6e90\u65f6\uff0c\u5982\u679c\u6b64\u65f6sem\u4e3a1\uff08sem\u4ee3\u8868\u5f53\u524d\u4fe1\u53f7\u91cf\u7684\u4e2a\u6570\uff09\uff0c\u5219\u8fdb\u7a0bA\u7533\u8bf7\u8d44\u6e90\u6210\u529f\uff0c\u6b64\u65f6\u9700\u8981\u5c06sem\u51cf\u51cf\uff0c\u7136\u540e\u8fdb\u7a0bA\u5c31\u53ef\u4ee5\u5bf9\u5171\u4eab\u5185\u5b58\u8fdb\u884c\u4e00\u7cfb\u5217\u64cd\u4f5c\uff0c\u4f46\u662f\u5728\u8fdb\u7a0bA\u5728\u8bbf\u95ee\u5171\u4eab\u5185\u5b58\u65f6\uff0c\u82e5\u662f\u8fdb\u7a0bB\u7533\u8bf7\u8bbf\u95ee\u8be5\u5171\u4eab\u5185\u5b58\u8d44\u6e90\uff0c\u6b64\u65f6sem\u5c31\u4e3a0\u4e86\uff0c\u90a3\u4e48\u6b64\u65f6\u8fdb\u7a0bB\u4f1a\u88ab\u6302\u8d77\uff0c\u76f4\u5230\u8fdb\u7a0bA\u8bbf\u95ee\u5171\u4eab\u5185\u5b58\u7ed3\u675f\u540e\u5c06sem\u52a0\u52a0\uff0c\u6b64\u65f6\u624d\u4f1a\u5c06\u8fdb\u7a0bB\u5524\u8d77\uff0c\u7136\u540e\u8fdb\u7a0bB\u518d\u5bf9\u8be5\u5171\u4eab\u5185\u5b58\u8fdb\u884c\u8bbf\u95ee\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u65e0\u8bba\u4ec0\u4e48\u65f6\u5019\u90fd\u53ea\u4f1a\u6709\u4e00\u4e2a\u8fdb\u7a0b\u5728\u5bf9\u540c\u4e00\u4efd\u5171\u4eab\u5185\u5b58\u8fdb\u884c\u8bbf\u95ee\u64cd\u4f5c\uff0c\u4e5f\u5c31\u89e3\u51b3\u4e86\u4e34\u754c\u8d44\u6e90\u7684\u4e92\u65a5\u95ee\u9898\u3002<\/p>\n\n\n\n<p>\u5b9e\u9645\u4e0a\uff0c\u4ee3\u7801\u4e2d\u8ba1\u6570\u5668sem\u51cf\u51cf\u7684\u64cd\u4f5c\u5c31\u53eb\u505aP\u64cd\u4f5c\uff0c\u800c\u8ba1\u6570\u5668\u52a0\u52a0\u7684\u64cd\u4f5c\u5c31\u53eb\u505aV\u64cd\u4f5c\uff0cP\u64cd\u4f5c\u5c31\u662f\u7533\u8bf7\u4fe1\u53f7\u91cf\uff0c\u800cV\u64cd\u4f5c\u5c31\u662f\u91ca\u653e\u4fe1\u53f7\u91cf\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16788089534496.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16788089534496.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">System V IPC\u8054\u7cfb<\/h3>\n\n\n\n<p>\u901a\u8fc7\u5bf9system V\u7cfb\u7edf\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u5b66\u4e60\uff0c\u53ef\u4ee5\u53d1\u73b0\u5171\u4eab\u5185\u5b58\u3001\u6d88\u606f\u961f\u5217\u4ee5\u53ca\u4fe1\u53f7\u91cf\uff0c\u867d\u7136\u5b83\u4eec\u5185\u90e8\u7684\u5c5e\u6027\u5dee\u522b\u5f88\u5927\uff0c\u4f46\u662f\u7ef4\u62a4\u5b83\u4eec\u7684\u6570\u636e\u7ed3\u6784\u7684\u7b2c\u4e00\u4e2a\u6210\u5458\u786e\u662f\u4e00\u6837\u7684\uff0c\u90fd\u662fipc_perm\u7c7b\u578b\u7684\u6210\u5458\u53d8\u91cf\u3002<\/p>\n\n\n\n<p>\u8fd9\u6837\u8bbe\u8ba1\u7684\u597d\u5904\u5c31\u662f\uff0c\u5728\u64cd\u4f5c\u7cfb\u7edf\u5185\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2astruct ipc_perm\u7c7b\u578b\u7684\u6570\u7ec4\uff0c\u6b64\u65f6\u6bcf\u5f53\u6211\u4eec\u7533\u8bf7\u4e00\u4e2aIPC\u8d44\u6e90\uff0c\u5c31\u5728\u8be5\u6570\u7ec4\u4e2d\u5f00\u8f9f\u4e00\u4e2a\u8fd9\u6837\u7684\u7ed3\u6784\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16788092335439.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16788092335439.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u5728\u5185\u6838\u5f53\u4e2d\u53ea\u9700\u8981\u5c06\u6240\u6709\u7684IPC\u8d44\u6e90\u7684ipc_perm\u6210\u5458\u7ec4\u7ec7\u6210\u6570\u7ec4\u7684\u6837\u5b50\uff0c\u7136\u540e\u7528\u5207\u7247\u7684\u65b9\u5f0f\u83b7\u53d6\u5230\u8be5IPC\u8d44\u6e90\u7684\u8d77\u59cb\u5730\u5740\uff0c\u7136\u540e\u5c31\u53ef\u4ee5\u8bbf\u95ee\u8be5IPC\u8d44\u6e90\u7684\u6bcf\u4e00\u4e2a\u6210\u5458\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fdb\u7a0b\u95f4\u901a\u4fe1\u4ecb\u7ecd \u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u6982\u5ff5 \u8fdb\u7a0b\u95f4\u901a\u4fe1\u7b80\u79f0IPC(intetprocess communication) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,1],"tags":[30],"class_list":["post-150","post","type-post","status-publish","format-standard","hentry","category-linux","category-learn","tag-30"],"_links":{"self":[{"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/posts\/150","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/comments?post=150"}],"version-history":[{"count":2,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/posts\/150\/revisions"}],"predecessor-version":[{"id":152,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/posts\/150\/revisions\/152"}],"wp:attachment":[{"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/media?parent=150"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/categories?post=150"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/tags?post=150"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}