{"id":159,"date":"2026-03-24T13:49:54","date_gmt":"2026-03-24T05:49:54","guid":{"rendered":"https:\/\/codergodv.xyz\/?p=159"},"modified":"2026-03-24T13:49:54","modified_gmt":"2026-03-24T05:49:54","slug":"linux%e4%bf%a1%e5%8f%b7%e9%87%8f","status":"publish","type":"post","link":"https:\/\/codergodv.xyz\/index.php\/2026\/03\/24\/linux%e4%bf%a1%e5%8f%b7%e9%87%8f\/","title":{"rendered":"Linux\u4fe1\u53f7\u91cf"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">POSIX\u4fe1\u53f7\u91cf<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4fe1\u53f7\u91cf\u7684\u539f\u7406<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6211\u4eec\u5c06\u53ef\u80fd\u4f1a\u88ab\u591a\u4e2a\u6267\u884c\u6d41\u540c\u65f6\u8bbf\u95ee\u7684\u8d44\u6e90\u53eb\u505a\u4e34\u754c\u8d44\u6e90\uff0c\u4e34\u754c\u8d44\u6e90\u9700\u8981\u8fdb\u884c\u4fdd\u62a4\u5426\u5219\u4f1a\u51fa\u73b0\u6570\u636e\u4e0d\u4e00\u81f4\u7b49\u95ee\u9898\u3002<\/li>\n\n\n\n<li>\u5f53\u6211\u4eec\u4ec5\u7528\u4e00\u4e2a\u4e92\u65a5\u9501\u5bf9\u4e34\u754c\u8d44\u6e90\u8fdb\u884c\u4fdd\u62a4\u65f6\uff0c\u76f8\u5f53\u4e8e\u6211\u4eec\u5c06\u8fd9\u5757\u4e34\u754c\u8d44\u6e90\u770b\u4f5c\u4e00\u4e2a\u6574\u4f53\uff0c\u540c\u4e00\u65f6\u523b\u53ea\u5141\u8bb8\u4e00\u4e2a\u6267\u884c\u6d41\u5bf9\u8fd9\u5757\u4e34\u754c\u8d44\u6e90\u8fdb\u884c\u8bbf\u95ee\u3002<\/li>\n\n\n\n<li>\u4f46\u5b9e\u9645\u6211\u4eec\u53ef\u4ee5\u5c06\u8fd9\u5757\u4e34\u754c\u8d44\u6e90\u518d\u5206\u5272\u4e3a\u591a\u4e2a\u533a\u57df\uff0c\u5f53\u591a\u4e2a\u6267\u884c\u6d41\u9700\u8981\u8bbf\u95ee\u4e34\u754c\u8d44\u6e90\u65f6\uff0c\u5982\u679c\u8fd9\u4e9b\u6267\u884c\u6d41\u8bbf\u95ee\u7684\u662f\u4e34\u754c\u8d44\u6e90\u7684\u4e0d\u540c\u533a\u57df\uff0c\u90a3\u4e48\u6211\u4eec\u53ef\u4ee5\u8ba9\u8fd9\u4e9b\u6267\u884c\u6d41\u540c\u65f6\u8bbf\u95ee\u4e34\u754c\u8d44\u6e90\u7684\u4e0d\u540c\u533a\u57df\uff0c\u6b64\u65f6\u4e0d\u4f1a\u51fa\u73b0\u6570\u636e\u4e0d\u4e00\u81f4\u7b49\u95ee\u9898\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4fe1\u53f7\u91cf\u7684\u6982\u5ff5<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4fe1\u53f7\u91cf\uff08\u4fe1\u53f7\u706f\uff09\u672c\u8d28\u662f\u4e00\u4e2a\u8ba1\u6570\u5668\uff0c\u662f\u63cf\u8ff0\u4e34\u754c\u8d44\u6e90\u4e2d\u8d44\u6e90\u6570\u76ee\u7684\u8ba1\u6570\u5668\uff0c\u4fe1\u53f7\u91cf\u80fd\u591f\u66f4\u7ec6\u7c92\u5ea6\u7684\u5bf9\u4e34\u754c\u8d44\u6e90\u8fdb\u884c\u7ba1\u7406\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u6bcf\u4e2a\u6267\u884c\u6d41\u5728\u8fdb\u5165\u4e34\u754c\u533a\u4e4b\u524d\u90fd\u5e94\u8be5\u5148\u7533\u8bf7\u4fe1\u53f7\u91cf\uff0c\u7533\u8bf7\u6210\u529f\u5c31\u6709\u4e86\u64cd\u4f5c\u7279\u70b9\u7684\u4e34\u754c\u8d44\u6e90\u7684\u6743\u9650\uff0c\u5f53\u64cd\u4f5c\u5b8c\u6bd5\u540e\u5c31\u5e94\u8be5\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_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u4fe1\u53f7\u91cf\u7684PV\u64cd\u4f5c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P\u64cd\u4f5c\uff1a\u6211\u4eec\u5c06\u7533\u8bf7\u4fe1\u53f7\u91cf\u79f0\u4e3aP\u64cd\u4f5c\uff0c\u7533\u8bf7\u4fe1\u53f7\u91cf\u7684\u672c\u8d28\u5c31\u662f\u7533\u8bf7\u83b7\u5f97\u4e34\u754c\u8d44\u6e90\u4e2d\u67d0\u5757\u8d44\u6e90\u7684\u4f7f\u7528\u6743\u9650\uff0c\u5f53\u7533\u8bf7\u6210\u529f\u65f6\u4e34\u754c\u8d44\u6e90\u4e2d\u8d44\u6e90\u7684\u6570\u76ee\u5e94\u8be5\u51cf\u4e00\uff0c\u56e0\u6b64P\u64cd\u4f5c\u7684\u672c\u8d28\u5c31\u662f\u8ba9\u8ba1\u6570\u5668\u51cf\u4e00\u3002<\/li>\n\n\n\n<li>V\u64cd\u4f5c\uff1a\u6211\u4eec\u5c06\u91ca\u653e\u4fe1\u53f7\u91cf\u79f0\u4e3aV\u64cd\u4f5c\uff0c\u91ca\u653e\u4fe1\u53f7\u91cf\u7684\u672c\u8d28\u5c31\u662f\u5f52\u8fd8\u4e34\u754c\u8d44\u6e90\u4e2d\u67d0\u5757\u8d44\u6e90\u7684\u4f7f\u7528\u6743\u9650\uff0c\u5f53\u91ca\u653e\u6210\u529f\u65f6\u4e34\u754c\u8d44\u6e90\u4e2d\u4e34\u754c\u8d44\u6e90\u7684\u6570\u76ee\u5c31\u5e94\u8be5\u52a0\u4e00\uff0c\u56e0\u6b64V\u64cd\u4f5c\u7684\u672c\u8d28\u5c31\u662f\u8ba9\u8ba1\u6570\u5668\u52a0\u4e00\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>PV\u64cd\u4f5c\u5fc5\u987b\u662f\u539f\u5b50\u64cd\u4f5c<\/p>\n<\/blockquote>\n\n\n\n<p>\u591a\u4e2a\u6267\u884c\u6d41\u4e3a\u4e86\u8bbf\u95ee\u4e34\u754c\u8d44\u6e90\u4f1a\u7ade\u4e89\u5f0f\u7684\u7533\u8bf7\u4fe1\u53f7\u91cf\uff0c\u56e0\u6b64\u4fe1\u53f7\u91cf\u662f\u4f1a\u88ab\u591a\u4e2a\u6267\u884c\u6d41\u540c\u65f6\u8bbf\u95ee\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u4fe1\u53f7\u91cf\u7684\u672c\u8d28\u4e5f\u662f\u4e34\u754c\u8d44\u6e90\u3002<\/p>\n\n\n\n<p>\u4f46\u4fe1\u53f7\u91cf\u672c\u8d28\u5c31\u662f\u7528\u4e8e\u4fdd\u62a4\u4e34\u754c\u8d44\u6e90\u7684\uff0c\u6211\u4eec\u4e0d\u53ef\u80fd\u518d\u7528\u4fe1\u53f7\u91cf\u53bb\u4fdd\u62a4\u4fe1\u53f7\u91cf\uff0c\u6240\u4ee5\u4fe1\u53f7\u91cf\u7684PV\u64cd\u4f5c\u5fc5\u987b\u662f\u539f\u5b50\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong> \u5185\u5b58\u5f53\u4e2d\u53d8\u91cf\u7684<code>++<\/code>\u3001<code>--<\/code>\u64cd\u4f5c\u5e76\u4e0d\u662f\u539f\u5b50\u64cd\u4f5c\uff0c\u56e0\u6b64\u4fe1\u53f7\u91cf\u4e0d\u53ef\u80fd\u53ea\u662f\u7b80\u5355\u7684\u5bf9\u4e00\u4e2a\u5168\u5c40\u53d8\u91cf\u8fdb\u884c<code>++<\/code>\u3001<code>--<\/code>\u64cd\u4f5c\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7533\u8bf7\u4fe1\u53f7\u91cf\u5931\u8d25\u88ab\u6302\u8d77\u7b49\u5f85<\/p>\n<\/blockquote>\n\n\n\n<p>\u5f53\u6267\u884c\u6d41\u5728\u7533\u8bf7\u4fe1\u53f7\u91cf\u65f6\uff0c\u53ef\u80fd\u6b64\u65f6\u4fe1\u53f7\u91cf\u7684\u503c\u4e3a0\uff0c\u4e5f\u5c31\u662f\u8bf4\u4fe1\u53f7\u91cf\u63cf\u8ff0\u7684\u4e34\u754c\u8d44\u6e90\u5df2\u7ecf\u5168\u90e8\u88ab\u7533\u8bf7\u4e86\uff0c\u6b64\u65f6\u8be5\u6267\u884c\u6d41\u5c31\u5e94\u8be5\u5728\u8be5\u4fe1\u53f7\u91cf\u7684\u7b49\u5f85\u961f\u5217\u5f53\u4e2d\u8fdb\u884c\u7b49\u5f85\uff0c\u76f4\u5230\u6709\u4fe1\u53f7\u91cf\u88ab\u91ca\u653e\u65f6\u518d\u88ab\u5524\u9192\u3002<\/p>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong> \u4fe1\u53f7\u91cf\u7684\u672c\u8d28\u662f\u8ba1\u6570\u5668\uff0c\u4f46\u4e0d\u610f\u5473\u7740\u53ea\u6709\u8ba1\u6570\u5668\uff0c\u4fe1\u53f7\u91cf\u8fd8\u5305\u62ec\u4e00\u4e2a\u7b49\u5f85\u961f\u5217\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4fe1\u53f7\u91cf\u51fd\u6570<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u521d\u59cb\u5316\u4fe1\u53f7\u91cf<\/p>\n<\/blockquote>\n\n\n\n<p>\u521d\u59cb\u5316\u4fe1\u53f7\u91cf\u7684\u51fd\u6570\u53eb\u505asem_init\uff0c\u8be5\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int sem_init(sem_t* sem, int pshared, unsigned int value);<\/code><\/pre>\n\n\n\n<p>\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>sem\uff1a\u9700\u8981\u521d\u59cb\u5316\u7684\u4fe1\u53f7\u91cf\u3002<\/li>\n\n\n\n<li>pshared\uff1a\u4f20\u51650\u503c\u8868\u793a\u7ebf\u7a0b\u95f4\u5171\u4eab\uff0c\u4f20\u5165\u975e\u96f6\u503c\u8868\u793a\u8fdb\u7a0b\u95f4\u5171\u4eab\u3002<\/li>\n\n\n\n<li>value\uff1a\u4fe1\u53f7\u91cf\u7684\u521d\u59cb\u503c\uff08\u8ba1\u6570\u5668\u7684\u521d\u59cb\u503c\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8fd4\u56de\u503c\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u521d\u59cb\u5316\u4fe1\u53f7\u91cf\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong> POSIX\u4fe1\u53f7\u91cf\u548cSystem V\u4fe1\u53f7\u91cf\u4f5c\u7528\u76f8\u540c\uff0c\u90fd\u662f\u7528\u4e8e\u540c\u6b65\u64cd\u4f5c\uff0c\u8fbe\u5230\u65e0\u51b2\u7a81\u7684\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u76ee\u7684\uff0c\u4f46POSIX\u4fe1\u53f7\u91cf\u53ef\u4ee5\u7528\u4e8e\u7ebf\u7a0b\u95f4\u540c\u6b65\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u9500\u6bc1\u4fe1\u53f7\u91cf<\/p>\n<\/blockquote>\n\n\n\n<p>\u9500\u6bc1\u4fe1\u53f7\u91cf\u7684\u51fd\u6570\u53eb\u505asem_destroy\uff0c\u8be5\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int sem_destroy(sem_t* sem);<\/code><\/pre>\n\n\n\n<p>\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>sem\uff1a\u9700\u8981\u9500\u6bc1\u7684\u4fe1\u53f7\u91cf\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8fd4\u56de\u503c\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9500\u6bc1\u4fe1\u53f7\u91cf\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\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>\u7b49\u5f85\u4fe1\u53f7\u91cf\uff08\u7533\u8bf7\u4fe1\u53f7\u91cf\uff09<\/p>\n<\/blockquote>\n\n\n\n<p>\u7b49\u5f85\u4fe1\u53f7\u91cf\u7684\u51fd\u6570\u53eb\u505asem_wait\uff0c\u8be5\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int sem_wait(sem_t* sem);<\/code><\/pre>\n\n\n\n<p>\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>sem\uff1a\u9700\u8981\u7b49\u5f85\u7684\u4fe1\u53f7\u91cf\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8fd4\u56de\u503c\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b49\u5f85\u4fe1\u53f7\u91cf\u6210\u529f\u8fd4\u56de0\uff0c\u4fe1\u53f7\u91cf\u7684\u503c\u51cf\u4e00\u3002<\/li>\n\n\n\n<li>\u7b49\u5f85\u4fe1\u53f7\u91cf\u5931\u8d25\u8fd4\u56de-1\uff0c\u4fe1\u53f7\u91cf\u7684\u503c\u4fdd\u6301\u4e0d\u53d8\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u53d1\u5e03\u4fe1\u53f7\u91cf\uff08\u91ca\u653e\u4fe1\u53f7\u91cf\uff09<\/p>\n<\/blockquote>\n\n\n\n<p>\u53d1\u5e03\u4fe1\u53f7\u91cf\u7684\u51fd\u6570\u53eb\u505asem_post\uff0c\u8be5\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int sem_post(sem_t* sem);<\/code><\/pre>\n\n\n\n<p>\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>sem\uff1a\u9700\u8981\u53d1\u5e03\u7684\u4fe1\u53f7\u91cf\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8fd4\u56de\u503c\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53d1\u5e03\u4fe1\u53f7\u91cf\u6210\u529f\u8fd4\u56de0\uff0c\u4fe1\u53f7\u91cf\u7684\u503c\u52a0\u4e00\u3002<\/li>\n\n\n\n<li>\u53d1\u5e03\u4fe1\u53f7\u91cf\u5931\u8d25\u8fd4\u56de-1\uff0c\u4fe1\u53f7\u91cf\u7684\u503c\u4fdd\u6301\u4e0d\u53d8\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u5143\u4fe1\u53f7\u91cf\u6a21\u62df\u5b9e\u73b0\u4e92\u65a5\u529f\u80fd<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4fe1\u53f7\u91cf\u7684\u672c\u8d28\u662f\u4e00\u4e2a\u8ba1\u6570\u5668\uff0c\u5982\u679c\u5c06\u4fe1\u53f7\u91cf\u7684\u521d\u59cb\u503c\u8bbe\u7f6e\u4e3a1\uff0c\u90a3\u4e48\u6b64\u65f6\u8be5\u4fe1\u53f7\u91cf\u53eb\u505a\u4e8c\u5143\u4fe1\u53f7\u91cf\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u4fe1\u53f7\u91cf\u7684\u521d\u59cb\u503c\u4e3a1\uff0c\u8bf4\u660e\u4fe1\u53f7\u91cf\u6240\u63cf\u8ff0\u7684\u4e34\u754c\u8d44\u6e90\u53ea\u6709\u4e00\u4efd\uff0c\u6b64\u65f6\u4fe1\u53f7\u91cf\u7684\u4f5c\u7528\u57fa\u672c\u7b49\u4ef7\u4e8e\u4e92\u65a5\u9501\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u4e0b\u9762\u6211\u4eec\u5b9e\u73b0\u4e00\u4e2a\u591a\u7ebf\u7a0b\u62a2\u7968\u7cfb\u7edf\uff0c\u5176\u4e2d\u6211\u4eec\u7528\u4e8c\u5143\u4fe1\u53f7\u91cf\u6a21\u62df\u5b9e\u73b0\u591a\u7ebf\u7a0b\u4e92\u65a5\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u5728\u4e3b\u7ebf\u7a0b\u5f53\u4e2d\u521b\u5efa\u56db\u4e2a\u65b0\u7ebf\u7a0b\uff0c\u8ba9\u8fd9\u56db\u4e2a\u65b0\u7ebf\u7a0b\u6267\u884c\u62a2\u7968\u903b\u8f91\uff0c\u5e76\u4e14\u6bcf\u6b21\u62a2\u5b8c\u7968\u540e\u6253\u5370\u8f93\u51fa\u6b64\u65f6\u5269\u4f59\u7684\u7968\u6570\uff0c\u5176\u4e2d\u6211\u4eec\u7528\u5168\u5c40\u53d8\u91cftickets\u8bb0\u5f55\u5f53\u524d\u5269\u4f59\u7684\u7968\u6570\uff0c\u6b64\u65f6tickets\u662f\u4f1a\u88ab\u591a\u4e2a\u6267\u884c\u6d41\u540c\u65f6\u8bbf\u95ee\u7684\u4e34\u754c\u8d44\u6e90\uff0c\u5728\u4e0b\u9762\u7684\u4ee3\u7801\u4e2d\u6211\u4eec\u5e76\u6ca1\u6709\u5bf9tickets\u8fdb\u884c\u4efb\u4f55\u7684\u4fdd\u62a4\u64cd\u4f5c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream&gt;\n#include &lt;string&gt;\n#include &lt;unistd.h&gt;\n#include &lt;pthread.h&gt;\n\nint tickets = 2000;\nvoid* TicketGrabbing(void* arg)\n{\n    std::string name = (char*)arg;\n    while (true){\n        if (tickets &gt; 0){\n            usleep(1000);\n            std::cout &lt;&lt; name &lt;&lt; \" get a ticket, tickets left: \" &lt;&lt; --tickets &lt;&lt; std::endl;\n        }\n        else{\n            break;\n        }\n    }\n    std::cout &lt;&lt; name &lt;&lt; \" quit...\" &lt;&lt; std::endl;\n    pthread_exit((void*)0);\n}\n\nint main()\n{\n    pthread_t tid1, tid2, tid3, tid4;\n    pthread_create(&amp;tid1, nullptr, TicketGrabbing, (void*)\"thread 1\");\n    pthread_create(&amp;tid2, nullptr, TicketGrabbing, (void*)\"thread 2\");\n    pthread_create(&amp;tid3, nullptr, TicketGrabbing, (void*)\"thread 3\");\n    pthread_create(&amp;tid4, nullptr, TicketGrabbing, (void*)\"thread 4\");\n\n    pthread_join(tid1, nullptr);\n    pthread_join(tid2, nullptr);\n    pthread_join(tid3, nullptr);\n    pthread_join(tid4, nullptr);\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u8fd0\u884c\u4ee3\u7801\u540e\u53ef\u4ee5\u770b\u5230\uff0c\u7ebf\u7a0b\u6253\u5370\u8f93\u51fa\u5269\u4f59\u7968\u6570\u65f6\u51fa\u73b0\u4e86\u7968\u6570\u5269\u4f59\u4e3a\u8d1f\u6570\u7684\u60c5\u51b5\uff0c\u8fd9\u662f\u4e0d\u7b26\u5408\u6211\u4eec\u9884\u671f\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_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16809231148053.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16809231148053.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<p>\u4e0b\u9762\u6211\u4eec\u5728\u62a2\u7968\u903b\u8f91\u5f53\u4e2d\u52a0\u5165\u4e8c\u5143\u4fe1\u53f7\u91cf\uff0c\u8ba9\u6bcf\u4e2a\u7ebf\u7a0b\u5728\u8bbf\u95ee\u5168\u5c40\u53d8\u91cftickets\u4e4b\u524d\u5148\u7533\u8bf7\u4fe1\u53f7\u91cf\uff0c\u8bbf\u95ee\u5b8c\u6bd5\u540e\u518d\u91ca\u653e\u4fe1\u53f7\u91cf\uff0c\u6b64\u65f6\u4e8c\u5143\u4fe1\u53f7\u91cf\u5c31\u8fbe\u5230\u4e86\u4e92\u65a5\u7684\u6548\u679c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream&gt;\n#include &lt;string&gt;\n#include &lt;unistd.h&gt;\n#include &lt;pthread.h&gt;\n#include &lt;semaphore.h&gt;\n\nclass Sem{\npublic:\n    Sem(int num)\n    {\n        sem_init(&amp;_sem, 0, num);\n    }\n    ~Sem()\n    {\n        sem_destroy(&amp;_sem);\n    }\n    void P()\n    {\n        sem_wait(&amp;_sem);\n    }\n    void V()\n    {\n        sem_post(&amp;_sem);\n    }\nprivate:\n    sem_t _sem;\n};\n\nSem sem(1); \/\/\u4e8c\u5143\u4fe1\u53f7\u91cf\nint tickets = 2000;\nvoid* TicketGrabbing(void* arg)\n{\n    std::string name = (char*)arg;\n    while (true){\n        sem.P();\n        if (tickets &gt; 0){\n            usleep(1000);\n            std::cout &lt;&lt; name &lt;&lt; \" get a ticket, tickets left: \" &lt;&lt; --tickets &lt;&lt; std::endl;\n            sem.V();\n        }\n        else{\n            sem.V();\n            break;\n        }\n    }\n    std::cout &lt;&lt; name &lt;&lt; \" quit...\" &lt;&lt; std::endl;\n    pthread_exit((void*)0);\n}\n\nint main()\n{\n    pthread_t tid1, tid2, tid3, tid4;\n    pthread_create(&amp;tid1, nullptr, TicketGrabbing, (void*)\"thread 1\");\n    pthread_create(&amp;tid2, nullptr, TicketGrabbing, (void*)\"thread 2\");\n    pthread_create(&amp;tid3, nullptr, TicketGrabbing, (void*)\"thread 3\");\n    pthread_create(&amp;tid4, nullptr, TicketGrabbing, (void*)\"thread 4\");\n\n    pthread_join(tid1, nullptr);\n    pthread_join(tid2, nullptr);\n    pthread_join(tid3, nullptr);\n    pthread_join(tid4, nullptr);\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u8fd0\u884c\u4ee3\u7801\u540e\u5c31\u4e0d\u4f1a\u51fa\u73b0\u5269\u4f59\u7968\u6570\u4e3a\u8d1f\u7684\u60c5\u51b5\u4e86\uff0c\u56e0\u4e3a\u6b64\u65f6\u540c\u4e00\u65f6\u523b\u53ea\u4f1a\u6709\u4e00\u4e2a\u6267\u884c\u6d41\u5bf9\u5168\u5c40\u53d8\u91cftickets\u8fdb\u884c\u8bbf\u95ee\uff0c\u4e0d\u4f1a\u51fa\u73b0\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\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_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16809252032526.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16809252032526.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u57fa\u4e8e\u73af\u5f62\u961f\u5217\u7684\u751f\u4ea7\u6d88\u8d39\u6a21\u578b<\/h2>\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_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16809252717259.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-16809252717259.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u7a7a\u95f4\u8d44\u6e90\u548c\u6570\u636e\u8d44\u6e90<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u751f\u4ea7\u8005\u5173\u6ce8\u7684\u662f\u7a7a\u95f4\u8d44\u6e90\uff0c\u6d88\u8d39\u8005\u5173\u6ce8\u7684\u662f\u6570\u636e\u8d44\u6e90<\/p>\n<\/blockquote>\n\n\n\n<p>\u5bf9\u4e8e\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u6765\u8bf4\uff0c\u5b83\u4eec\u5173\u6ce8\u7684\u8d44\u6e90\u662f\u4e0d\u540c\u7684\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u751f\u4ea7\u8005\u5173\u6ce8\u7684\u662f\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u662f\u5426\u6709\u7a7a\u95f4\uff08blank\uff09\uff0c\u53ea\u8981\u6709\u7a7a\u95f4\u751f\u4ea7\u8005\u5c31\u53ef\u4ee5\u8fdb\u884c\u751f\u4ea7\u3002<\/li>\n\n\n\n<li>\u6d88\u8d39\u8005\u5173\u6ce8\u7684\u662f\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u662f\u5426\u6709\u6570\u636e\uff08data\uff09\uff0c\u53ea\u8981\u6709\u6570\u636e\u6d88\u8d39\u8005\u5c31\u53ef\u4ee5\u8fdb\u884c\u6d88\u8d39\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>blank_sem\u548cdata_sem\u7684\u521d\u59cb\u5316\u8bbe\u7f6e<\/p>\n<\/blockquote>\n\n\n\n<p>\u73b0\u5728\u6211\u4eec\u7528\u4fe1\u53f7\u91cf\u6765\u63cf\u8ff0\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u7684\u7a7a\u95f4\u8d44\u6e90\uff08blank_sem\uff09\u548c\u6570\u636e\u8d44\u6e90\uff08data_sem\uff09\uff0c\u5728\u6211\u4eec\u521d\u59cb\u4fe1\u53f7\u91cf\u65f6\u7ed9\u5b83\u4eec\u8bbe\u7f6e\u7684\u521d\u59cb\u503c\u662f\u4e0d\u540c\u7684\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>blank_sem\u7684\u521d\u59cb\u503c\u6211\u4eec\u5e94\u8be5\u8bbe\u7f6e\u4e3a\u73af\u5f62\u961f\u5217\u7684\u5bb9\u91cf\uff0c\u56e0\u4e3a\u521a\u5f00\u59cb\u65f6\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u5168\u662f\u7a7a\u95f4\u3002<\/li>\n\n\n\n<li>data_sem\u7684\u521d\u59cb\u503c\u6211\u4eec\u5e94\u8be5\u8bbe\u7f6e\u4e3a0\uff0c\u56e0\u4e3a\u521a\u5f00\u59cb\u65f6\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u6ca1\u6709\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7533\u8bf7\u548c\u91ca\u653e\u8d44\u6e90<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u751f\u4ea7\u8005\u7533\u8bf7\u7a7a\u95f4\u8d44\u6e90\uff0c\u91ca\u653e\u6570\u636e\u8d44\u6e90<\/p>\n<\/blockquote>\n\n\n\n<p>\u5bf9\u4e8e\u751f\u4ea7\u8005\u6765\u8bf4\uff0c\u751f\u4ea7\u8005\u6bcf\u6b21\u751f\u4ea7\u6570\u636e\u524d\u90fd\u9700\u8981\u5148\u7533\u8bf7blank_sem\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679cblank_sem\u7684\u503c\u4e0d\u4e3a0\uff0c\u5219\u4fe1\u53f7\u91cf\u7533\u8bf7\u6210\u529f\uff0c\u6b64\u65f6\u751f\u4ea7\u8005\u53ef\u4ee5\u8fdb\u884c\u751f\u4ea7\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li>\u5982\u679cblank_sem\u7684\u503c\u4e3a0\uff0c\u5219\u4fe1\u53f7\u91cf\u7533\u8bf7\u5931\u8d25\uff0c\u6b64\u65f6\u751f\u4ea7\u8005\u9700\u8981\u5728blank_sem\u7684\u7b49\u5f85\u961f\u5217\u4e0b\u8fdb\u884c\u963b\u585e\u7b49\u5f85\uff0c\u76f4\u5230\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u6709\u65b0\u7684\u7a7a\u95f4\u540e\u518d\u88ab\u5524\u9192\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5f53\u751f\u4ea7\u8005\u751f\u4ea7\u5b8c\u6570\u636e\u540e\uff0c\u5e94\u8be5\u91ca\u653edata_sem\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u867d\u7136\u751f\u4ea7\u8005\u5728\u8fdb\u884c\u751f\u4ea7\u524d\u662f\u5bf9blank_sem\u8fdb\u884c\u7684P\u64cd\u4f5c\uff0c\u4f46\u662f\u5f53\u751f\u4ea7\u8005\u751f\u4ea7\u5b8c\u6570\u636e\uff0c\u5e94\u8be5\u5bf9data_sem\u8fdb\u884cV\u64cd\u4f5c\u800c\u4e0d\u662fblank_sem\u3002<\/li>\n\n\n\n<li>\u751f\u4ea7\u8005\u5728\u751f\u4ea7\u6570\u636e\u524d\u7533\u8bf7\u5230\u7684\u662f<code>blank\u4f4d\u7f6e<\/code>\uff0c\u5f53\u751f\u4ea7\u8005\u751f\u4ea7\u5b8c\u6570\u636e\u540e\uff0c\u8be5\u4f4d\u7f6e\u5f53\u4e2d\u5b58\u50a8\u7684\u662f\u751f\u4ea7\u8005\u751f\u4ea7\u7684\u6570\u636e\uff0c\u5728\u8be5\u6570\u636e\u88ab\u6d88\u8d39\u8005\u6d88\u8d39\u4e4b\u524d\uff0c\u8be5\u4f4d\u7f6e\u4e0d\u518d\u662f<code>blank\u4f4d\u7f6e<\/code>\uff0c\u800c\u5e94\u8be5\u662f<code>data\u4f4d\u7f6e<\/code>\u3002<\/li>\n\n\n\n<li>\u5f53\u751f\u4ea7\u8005\u751f\u4ea7\u5b8c\u6570\u636e\u540e\uff0c\u610f\u5473\u7740\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u591a\u4e86\u4e00\u4e2a<code>data\u4f4d\u7f6e<\/code>\uff0c\u56e0\u6b64\u6211\u4eec\u5e94\u8be5\u5bf9data_sem\u8fdb\u884cV\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6d88\u8d39\u8005\u7533\u8bf7\u6570\u636e\u8d44\u6e90\uff0c\u91ca\u653e\u7a7a\u95f4\u8d44\u6e90<\/p>\n<\/blockquote>\n\n\n\n<p>\u5bf9\u4e8e\u6d88\u8d39\u8005\u6765\u8bf4\uff0c\u6d88\u8d39\u8005\u6bcf\u6b21\u6d88\u8d39\u6570\u636e\u524d\u90fd\u9700\u8981\u5148\u7533\u8bf7data_sem\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679cdata_sem\u7684\u503c\u4e0d\u4e3a0\uff0c\u5219\u4fe1\u53f7\u91cf\u7533\u8bf7\u6210\u529f\uff0c\u6b64\u65f6\u6d88\u8d39\u8005\u53ef\u4ee5\u8fdb\u884c\u6d88\u8d39\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li>\u5982\u679cdata_sem\u7684\u503c\u4e3a0\uff0c\u5219\u4fe1\u53f7\u91cf\u7533\u8bf7\u5931\u8d25\uff0c\u6b64\u65f6\u6d88\u8d39\u8005\u9700\u8981\u5728data_sem\u7684\u7b49\u5f85\u961f\u5217\u4e0b\u8fdb\u884c\u963b\u585e\u7b49\u5f85\uff0c\u76f4\u5230\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u6709\u65b0\u7684\u6570\u636e\u540e\u518d\u88ab\u5524\u9192\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5f53\u6d88\u8d39\u8005\u6d88\u8d39\u5b8c\u6570\u636e\u540e\uff0c\u5e94\u8be5\u91ca\u653eblank_sem\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u867d\u7136\u6d88\u8d39\u8005\u518d\u8fdb\u884c\u6d88\u8d39\u524d\u662f\u5bf9data_sem\u8fdb\u884c\u7684P\u64cd\u4f5c\uff0c\u4f46\u662f\u5f53\u6d88\u8d39\u8005\u6d88\u8d39\u5b8c\u6570\u636e\uff0c\u5e94\u8be5\u5bf9blank_sem\u8fdb\u884cV\u64cd\u4f5c\u800c\u4e0d\u662fdata_sem\u3002<\/li>\n\n\n\n<li>\u6d88\u8d39\u8005\u518d\u6d88\u8d39\u6570\u636e\u524d\u7533\u8bf7\u5230\u7684\u662f<code>data\u4f4d\u7f6e<\/code>\uff0c\u5f53\u6d88\u8d39\u8005\u6d88\u8d39\u5b8c\u6570\u636e\u540e\uff0c\u8be5\u4f4d\u7f6e\u5f53\u4e2d\u7684\u6570\u636e\u5df2\u7ecf\u88ab\u6d88\u8d39\u8fc7\u4e86\uff0c\u518d\u6b21\u88ab\u6d88\u8d39\u5c31\u6ca1\u6709\u610f\u4e49\u4e86\uff0c\u4e3a\u4e86\u8ba9\u751f\u4ea7\u8005\u540e\u7eed\u53ef\u4ee5\u5728\u8be5\u4f4d\u7f6e\u751f\u4ea7\u65b0\u7684\u6570\u636e\uff0c\u6211\u4eec\u5e94\u8be5\u5c06\u8be5\u4f4d\u7f6e\u7b97\u4f5c<code>blank\u4f4d\u7f6e<\/code>\uff0c\u800c\u4e0d\u662f<code>data\u4f4d\u7f6e<\/code>\u3002<\/li>\n\n\n\n<li>\u5f53\u6d88\u8d39\u8005\u6d88\u8d39\u5b8c\u6570\u636e\u540e\uff0c\u610f\u5473\u7740\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u591a\u4e86\u4e00\u4e2a<code>blank\u4f4d\u7f6e<\/code>\uff0c\u56e0\u6b64\u6211\u4eec\u5e94\u8be5\u5bf9blank_sem\u8fdb\u884cV\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5fc5\u987b\u9075\u5b88\u7684\u4e24\u4e2a\u89c4\u5219<\/h3>\n\n\n\n<p>\u5728\u57fa\u4e8e\u73af\u5f62\u961f\u5217\u7684\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u6a21\u578b\u5f53\u4e2d\uff0c\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u5fc5\u987b\u9075\u5faa\u5982\u4e0b\u4e24\u4e2a\u89c4\u5219\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7b2c\u4e00\u4e2a\u89c4\u5219\uff1a\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u4e0d\u80fd\u5bf9\u540c\u4e00\u4e2a\u4f4d\u7f6e\u8fdb\u884c\u8bbf\u95ee\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u5728\u8bbf\u95ee\u73af\u5f62\u961f\u5217\u65f6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u8bbf\u95ee\u7684\u662f\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u7684\u540c\u4e00\u4e2a\u4f4d\u7f6e\uff0c\u90a3\u4e48\u6b64\u65f6\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u5c31\u76f8\u5f53\u4e8e\u540c\u65f6\u5bf9\u8fd9\u4e00\u5757\u4e34\u754c\u8d44\u6e90\u8fdb\u884c\u4e86\u8bbf\u95ee\uff0c\u8fd9\u5f53\u7136\u662f\u4e0d\u5141\u8bb8\u7684\u3002<\/li>\n\n\n\n<li>\u800c\u5982\u679c\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u8bbf\u95ee\u7684\u662f\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u7684\u4e0d\u540c\u4f4d\u7f6e\uff0c\u90a3\u4e48\u6b64\u65f6\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u662f\u53ef\u4ee5\u540c\u65f6\u8fdb\u884c\u751f\u4ea7\u548c\u6d88\u8d39\u7684\uff0c\u6b64\u65f6\u4e0d\u4f1a\u51fa\u73b0\u6570\u636e\u4e0d\u4e00\u81f4\u7b49\u95ee\u9898\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5982\u4e0b\u56fe\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_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-168092785846712.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-168092785846712.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>\u7b2c\u4e8c\u4e2a\u89c4\u5219\uff1a\u65e0\u8bba\u662f\u751f\u4ea7\u8005\u8fd8\u662f\u6d88\u8d39\u8005\uff0c\u90fd\u4e0d\u5e94\u8be5\u5c06\u5bf9\u65b9\u5957\u4e00\u4e2a\u5708\u4ee5\u4e0a\u3002<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u751f\u4ea7\u8005\u4ece\u6d88\u8d39\u8005\u7684\u4f4d\u7f6e\u5f00\u59cb\u4e00\u76f4\u6309\u987a\u65f6\u9488\u65b9\u5411\u8fdb\u884c\u751f\u4ea7\uff0c\u5982\u679c\u751f\u4ea7\u8005\u751f\u4ea7\u7684\u901f\u5ea6\u6bd4\u6d88\u8d39\u8005\u6d88\u8d39\u7684\u5feb\uff0c\u90a3\u4e48\u5f53\u751f\u4ea7\u8005\u7ed5\u7740\u6d88\u8d39\u8005\u751f\u4ea7\u529b\u4e00\u5708\u6570\u636e\u540e\u518d\u6b21\u9047\u5230\u6d88\u8d39\u8005\uff0c\u6b64\u65f6\u751f\u4ea7\u8005\u5c31\u4e0d\u5e94\u8be5\u518d\u7ee7\u7eed\u751f\u4ea7\u4e86\uff0c\u56e0\u4e3a\u518d\u751f\u4ea7\u5c31\u4f1a\u8986\u76d6\u8fd8\u672a\u88ab\u6d88\u8d39\u8005\u6d88\u8d39\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u540c\u7406\uff0c\u6d88\u8d39\u8005\u4ece\u751f\u4ea7\u8005\u7684\u4f4d\u7f6e\u5f00\u59cb\u4e00\u76f4\u6309\u987a\u65f6\u9488\u65b9\u5411\u8fdb\u884c\u6d88\u8d39\uff0c\u5982\u679c\u6d88\u8d39\u8005\u6d88\u8d39\u7684\u901f\u5ea6\u6bd4\u751f\u4ea7\u8005\u751f\u4ea7\u7684\u901f\u5ea6\u5feb\uff0c\u90a3\u4e48\u5f53\u6d88\u8d39\u8005\u7ed5\u7740\u751f\u4ea7\u8005\u6d88\u8d39\u4e00\u5708\u6570\u636e\u540e\u518d\u6b21\u9047\u5230\u751f\u4ea7\u8005\uff0c\u6b64\u65f6\u6d88\u8d39\u8005\u5c31\u4e0d\u5e94\u8be5\u518d\u7ee7\u7eed\u6d88\u8d39\u4e86\uff0c\u56e0\u4e3a\u518d\u6d88\u8d39\u5c31\u4f1a\u6d88\u8d39\u5230\u7f13\u51b2\u533a\u4e2d\u4fdd\u5b58\u7684\u5e9f\u5f03\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5982\u4e0b\u56fe\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_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-168092844697415.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-168092844697415.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"img\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u4ee3\u7801\u5b9e\u73b0<\/h3>\n\n\n\n<p>\u5176\u4e2d\u7684RingQueue\u5c31\u662f\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u6a21\u578b\u5f53\u4e2d\u7684\u4ea4\u6613\u573a\u6240\uff0c\u6211\u4eec\u53ef\u4ee5\u7528C++STL\u5e93\u5f53\u4e2d\u7684vector\u8fdb\u884c\u5b9e\u73b0\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#pragma once\n\n#include &lt;iostream&gt;\n#include &lt;unistd.h&gt;\n#include &lt;pthread.h&gt;\n#include &lt;semaphore.h&gt;\n#include &lt;vector&gt;\n\n#define NUM 8\n\ntemplate&lt;class T&gt;\nclass RingQueue\n{\nprivate:\n    \/\/P\u64cd\u4f5c\n    void P(sem_t&amp; s)\n    {\n        sem_wait(&amp;s);\n    }\n    \/\/V\u64cd\u4f5c\n    void V(sem_t&amp; s)\n    {\n        sem_post(&amp;s);\n    }\npublic:\n    RingQueue(int cap = NUM)\n        : _cap(cap), _p_pos(0), _c_pos(0)\n    {\n        _q.resize(_cap);\n        sem_init(&amp;_blank_sem, 0, _cap); \/\/blank_sem\u521d\u59cb\u503c\u8bbe\u7f6e\u4e3a\u73af\u5f62\u961f\u5217\u7684\u5bb9\u91cf\n        sem_init(&amp;_data_sem, 0, 0); \/\/data_sem\u521d\u59cb\u503c\u8bbe\u7f6e\u4e3a0\n    }\n    ~RingQueue()\n    {\n    sem_destroy(&amp;_blank_sem);\n    sem_destroy(&amp;_data_sem);\n    }\n    \/\/\u5411\u73af\u5f62\u961f\u5217\u63d2\u5165\u6570\u636e\uff08\u751f\u4ea7\u8005\u8c03\u7528\uff09\n    void Push(const T&amp; data)\n    {\n        P(_blank_sem); \/\/\u751f\u4ea7\u8005\u5173\u6ce8\u7a7a\u95f4\u8d44\u6e90\n        _q&#91;_p_pos] = data;\n        V(_data_sem); \/\/\u751f\u4ea7\n\n        \/\/\u66f4\u65b0\u4e0b\u4e00\u6b21\u751f\u4ea7\u7684\u4f4d\u7f6e\n        _p_pos++;\n        _p_pos %= _cap;\n    }\n    \/\/\u4ece\u73af\u5f62\u961f\u5217\u83b7\u53d6\u6570\u636e\uff08\u6d88\u8d39\u8005\u8c03\u7528\uff09\n    void Pop(T&amp; data)\n    {\n        P(_data_sem); \/\/\u6d88\u8d39\u8005\u5173\u6ce8\u6570\u636e\u8d44\u6e90\n        data = _q&#91;_c_pos];\n        V(_blank_sem);\n\n        \/\/\u66f4\u65b0\u4e0b\u4e00\u6b21\u6d88\u8d39\u7684\u4f4d\u7f6e\n        _c_pos++;\n        _c_pos %= _cap;\n    }\nprivate:\n    std::vector&lt;T&gt; _q; \/\/\u73af\u5f62\u961f\u5217\n    int _cap; \/\/\u73af\u5f62\u961f\u5217\u7684\u5bb9\u91cf\u4e0a\u9650\n    int _p_pos; \/\/\u751f\u4ea7\u4f4d\u7f6e\n    int _c_pos; \/\/\u6d88\u8d39\u4f4d\u7f6e\n    sem_t _blank_sem; \/\/\u63cf\u8ff0\u7a7a\u95f4\u8d44\u6e90\n    sem_t _data_sem; \/\/\u63cf\u8ff0\u6570\u636e\u8d44\u6e90\n};<\/code><\/pre>\n\n\n\n<p><strong>\u76f8\u5173\u8bf4\u660e\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u4e0d\u8bbe\u7f6e\u73af\u5f62\u961f\u5217\u7684\u5927\u5c0f\u65f6\uff0c\u6211\u4eec\u9ed8\u8ba4\u5c06\u73af\u5f62\u961f\u5217\u7684\u5bb9\u91cf\u4e0a\u9650\u8bbe\u7f6e\u4e3a8\u3002<\/li>\n\n\n\n<li>\u4ee3\u7801\u4e2d\u7684RingQueue\u662f\u7528vector\u5b9e\u73b0\u7684\uff0c\u751f\u4ea7\u8005\u6bcf\u6b21\u751f\u4ea7\u7684\u6570\u636e\u653e\u5230vector\u4e0b\u6807\u4e3ap_pos\u7684\u4f4d\u7f6e\uff0c\u6d88\u8d39\u8005\u6bcf\u6b21\u6d88\u8d39\u7684\u6570\u636e\u6765\u6e90\u4e8evector\u4e0b\u6807\u4e3ac_pos\u7684\u4f4d\u7f6e\u3002<\/li>\n\n\n\n<li>\u751f\u4ea7\u8005\u6bcf\u6b21\u751f\u4ea7\u6570\u636e\u540ep_pos\u90fd\u4f1a\u8fdb\u884c++\uff0c\u6807\u8bb0\u4e0b\u4e00\u6b21\u751f\u4ea7\u6570\u636e\u7684\u5b58\u653e\u4f4d\u7f6e\uff0c++\u540e\u7684\u4e0b\u6807\u4f1a\u4e0e\u73af\u5f62\u961f\u5217\u7684\u5bb9\u91cf\u8fdb\u884c\u53d6\u6a21\u8fd0\u7b97\uff0c\u5b9e\u73b0\u201c\u73af\u5f62\u201d\u7684\u6548\u679c\u3002<\/li>\n\n\n\n<li>\u6d88\u8d39\u8005\u6bcf\u6b21\u6d88\u8d39\u6570\u636e\u540ec_pos\u90fd\u4f1a\u8fdb\u884c++\uff0c\u6807\u8bb0\u4e0b\u4e00\u6b21\u6d88\u8d39\u6570\u636e\u7684\u6765\u6e90\u4f4d\u7f6e\uff0c++\u540e\u7684\u4e0b\u6807\u4f1a\u4e0e\u73af\u5f62\u961f\u5217\u7684\u5bb9\u91cf\u8fdb\u884c\u53d6\u6a21\u8fd0\u7b97\uff0c\u5b9e\u73b0\u201c\u73af\u5f62\u201d\u7684\u6548\u679c\u3002<\/li>\n\n\n\n<li>p_pos\u53ea\u4f1a\u7531\u751f\u4ea7\u8005\u7ebf\u7a0b\u8fdb\u884c\u66f4\u65b0\uff0cc_pos\u53ea\u4f1a\u7531\u6d88\u8d39\u8005\u7ebf\u7a0b\u8fdb\u884c\u66f4\u65b0\uff0c\u5bf9\u8fd9\u4e24\u4e2a\u53d8\u91cf\u8bbf\u95ee\u65f6\u4e0d\u9700\u8981\u8fdb\u884c\u4fdd\u62a4\uff0c\u56e0\u6b64\u4ee3\u7801\u4e2d\u5c06p_pos\u548cc_pos\u7684\u66f4\u65b0\u653e\u5230\u4e86V\u64cd\u4f5c\u4e4b\u540e\uff0c\u5c31\u662f\u4e3a\u4e86\u5c3d\u91cf\u51cf\u5c11\u4e34\u754c\u533a\u7684\u4ee3\u7801\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e3a\u4e86\u65b9\u4fbf\u7406\u89e3\uff0c\u6211\u4eec\u8fd9\u91cc\u5b9e\u73b0\u5355\u751f\u4ea7\u8005\u3001\u5355\u6d88\u8d39\u8005\u7684\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u6a21\u578b\u3002\u4e8e\u662f\u5728\u4e3b\u51fd\u6570\u6211\u4eec\u5c31\u53ea\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u751f\u4ea7\u8005\u7ebf\u7a0b\u548c\u4e00\u4e2a\u6d88\u8d39\u8005\u7ebf\u7a0b\uff0c\u751f\u4ea7\u8005\u7ebf\u7a0b\u4e0d\u65ad\u751f\u4ea7\u6570\u636e\u653e\u5165\u73af\u5f62\u961f\u5217\uff0c\u6d88\u8d39\u8005\u7ebf\u7a0b\u4e0d\u65ad\u4ece\u73af\u5f62\u961f\u5217\u91cc\u53d6\u51fa\u6570\u636e\u8fdb\u884c\u6d88\u8d39\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include \"RingQueue.hpp\"\n\nvoid* Producer(void* arg)\n{\n    RingQueue&lt;int&gt;* rq = (RingQueue&lt;int&gt;*)arg;\n    while (true){\n        sleep(1);\n        int data = rand() % 100 + 1;\n        rq-&gt;Push(data);\n        std::cout &lt;&lt; \"Producer: \" &lt;&lt; data &lt;&lt; std::endl;\n    }\n}\nvoid* Consumer(void* arg)\n{\n    RingQueue&lt;int&gt;* rq = (RingQueue&lt;int&gt;*)arg;\n    while (true){\n        sleep(1);\n        int data = 0;\n        rq-&gt;Pop(data);\n        std::cout &lt;&lt; \"Consumer: \" &lt;&lt; data &lt;&lt; std::endl;\n    }\n}\nint main()\n{\n    srand((unsigned int)time(nullptr));\n    pthread_t producer, consumer;\n    RingQueue&lt;int&gt;* rq = new RingQueue&lt;int&gt;;\n    pthread_create(&amp;producer, nullptr, Producer, rq);\n    pthread_create(&amp;consumer, nullptr, Consumer, rq);\n\n    pthread_join(producer, nullptr);\n    pthread_join(consumer, nullptr);\n    delete rq;\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p><strong>\u76f8\u5173\u8bf4\u660e\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u73af\u5f62\u961f\u5217\u8981\u8ba9\u751f\u4ea7\u8005\u7ebf\u7a0b\u5411\u961f\u5217\u4e2dPush\u6570\u636e\uff0c\u8ba9\u6d88\u8d39\u8005\u7ebf\u7a0b\u4ece\u961f\u5217\u4e2dPop\u6570\u636e\uff0c\u56e0\u6b64\u8fd9\u4e2a\u73af\u5f62\u961f\u5217\u5fc5\u987b\u8981\u8ba9\u8fd9\u4e24\u4e2a\u7ebf\u7a0b\u540c\u65f6\u770b\u5230\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u521b\u5efa\u751f\u4ea7\u8005\u7ebf\u7a0b\u548c\u6d88\u8d39\u8005\u7ebf\u7a0b\u65f6\uff0c\u9700\u8981\u5c06\u73af\u5f62\u961f\u5217\u4f5c\u4e3a\u7ebf\u7a0b\u6267\u884c\u4f8b\u7a0b\u7684\u53c2\u6570\u8fdb\u884c\u4f20\u5165\u3002<\/li>\n\n\n\n<li>\u4ee3\u7801\u4e2d\u751f\u4ea7\u8005\u751f\u4ea7\u6570\u636e\u5c31\u662f\u5c06\u83b7\u53d6\u5230\u7684\u968f\u673a\u6570Push\u5230\u73af\u5f62\u961f\u5217\uff0c\u800c\u6d88\u8d39\u8005\u5c31\u662f\u4ece\u73af\u5f62\u961f\u5217Pop\u6570\u636e\uff0c\u4e3a\u4e86\u4fbf\u4e8e\u89c2\u5bdf\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u751f\u4ea7\u8005\u751f\u4ea7\u7684\u6570\u636e\u548c\u6d88\u8d39\u8005\u6d88\u8d39\u7684\u6570\u636e\u8fdb\u884c\u6253\u5370\u8f93\u51fa\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u6b65\u8c03\u4e00\u81f4<\/p>\n<\/blockquote>\n\n\n\n<p>\u7531\u4e8e\u4ee3\u7801\u4e2d\u751f\u4ea7\u8005\u662f\u6bcf\u9694\u4e00\u79d2\u751f\u4ea7\u4e00\u4e2a\u6570\u636e\uff0c\u800c\u6d88\u8d39\u8005\u662f\u6bcf\u9694\u4e00\u79d2\u6d88\u8d39\u4e00\u4e2a\u6570\u636e\uff0c\u56e0\u6b64\u8fd0\u884c\u4ee3\u7801\u540e\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7684\u6267\u884c\u6b65\u8c03\u662f\u4e00\u81f4\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_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-168094181456018.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-168094181456018.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>\u751f\u4ea7\u8005\u751f\u4ea7\u7684\u5feb\uff0c\u6d88\u8d39\u8005\u6d88\u8d39\u7684\u6162<\/p>\n<\/blockquote>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u8ba9\u751f\u4ea7\u8005\u4e0d\u505c\u7684\u751f\u4ea7\uff0c\u800c\u6d88\u8d39\u8005\u6bcf\u9694\u4e00\u79d2\u8fdb\u884c\u6d88\u8d39\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void* Producer(void* arg)\n{\n    RingQueue&lt;int&gt;* rq = (RingQueue&lt;int&gt;*)arg;\n    while (true){\n        int data = rand() % 100 + 1;\n        rq-&gt;Push(data);\n        std::cout &lt;&lt; \"Producer: \" &lt;&lt; data &lt;&lt; std::endl;\n    }\n}\nvoid* Consumer(void* arg)\n{\n    RingQueue&lt;int&gt;* rq = (RingQueue&lt;int&gt;*)arg;\n    while (true){\n        sleep(1);\n        int data = 0;\n        rq-&gt;Pop(data);\n        std::cout &lt;&lt; \"Consumer: \" &lt;&lt; data &lt;&lt; std::endl;\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u6b64\u65f6\u7531\u4e8e\u751f\u4ea7\u8005\u751f\u4ea7\u7684\u5f88\u5feb\uff0c\u8fd0\u884c\u4ee3\u7801\u540e\u4e00\u77ac\u95f4\u751f\u4ea7\u8005\u5c31\u5c06\u73af\u5f62\u961f\u5217\u6253\u6ee1\u4e86\uff0c\u6b64\u65f6\u751f\u4ea7\u8005\u60f3\u8981\u518d\u8fdb\u884c\u751f\u4ea7\uff0c\u4f46\u7a7a\u95f4\u8d44\u6e90\u5df2\u7ecf\u4e3a0\u4e86\uff0c\u4e8e\u662f\u751f\u4ea7\u8005\u53ea\u80fd\u5728blank_sem\u7684\u7b49\u5f85\u961f\u5217\u4e0b\u8fdb\u884c\u963b\u585e\u7b49\u5f85\uff0c\u76f4\u5230\u7531\u6d88\u8d39\u8005\u6d88\u8d39\u5b8c\u4e00\u4e2a\u6570\u636e\u540e\u5bf9blank_sem\u8fdb\u884c\u4e86V\u64cd\u4f5c\uff0c\u751f\u4ea7\u8005\u624d\u4f1a\u88ab\u5524\u9192\u8fdb\u800c\u7ee7\u7eed\u8fdb\u884c\u751f\u4ea7\u3002<\/p>\n\n\n\n<p>\u4f46\u7531\u4e8e\u751f\u4ea7\u8005\u7684\u751f\u4ea7\u901f\u5ea6\u5f88\u5feb\uff0c\u751f\u4ea7\u8005\u751f\u4ea7\u5b8c\u4e00\u4e2a\u6570\u636e\u540e\u53c8\u4f1a\u8fdb\u884c\u7b49\u5f85\uff0c\u56e0\u6b64\u540e\u7eed\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7684\u6b65\u8c03\u53c8\u53d8\u6210\u4e00\u81f4\u7684\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_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-168094303091521.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.codergodv.xyz\/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAMjAyMWRyYWdvbg==,size_20,color_FFFFFF,t_70,g_se,x_16-168094303091521.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>\u751f\u4ea7\u8005\u751f\u4ea7\u7684\u6162\uff0c\u6d88\u8d39\u8005\u6d88\u8d39\u7684\u5feb<\/p>\n<\/blockquote>\n\n\n\n<p>\u5f53\u7136\u6211\u4eec\u4e5f\u53ef\u4ee5\u8ba9\u751f\u4ea7\u8005\u6bcf\u9694\u4e00\u79d2\u8fdb\u884c\u751f\u4ea7\uff0c\u800c\u6d88\u8d39\u8005\u4e0d\u505c\u7684\u8fdb\u884c\u6d88\u8d39\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void* Producer(void* arg)\n{\n    RingQueue&lt;int&gt;* rq = (RingQueue&lt;int&gt;*)arg;\n    while (true){\n        sleep(1);\n        int data = rand() % 100 + 1;\n        rq-&gt;Push(data);\n        std::cout &lt;&lt; \"Producer: \" &lt;&lt; data &lt;&lt; std::endl;\n    }\n}\nvoid* Consumer(void* arg)\n{\n    RingQueue&lt;int&gt;* rq = (RingQueue&lt;int&gt;*)arg;\n    while (true){\n        int data = 0;\n        rq-&gt;Pop(data);\n        std::cout &lt;&lt; \"Consumer: \" &lt;&lt; data &lt;&lt; std::endl;\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u867d\u7136\u6d88\u8d39\u8005\u6d88\u8d39\u7684\u5f88\u5feb\uff0c\u4f46\u4e00\u5f00\u59cb\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u7684\u6570\u636e\u8d44\u6e90\u4e3a0\uff0c\u56e0\u6b64\u6d88\u8d39\u8005\u53ea\u80fd\u5728data_sem\u7684\u7b49\u5f85\u961f\u5217\u4e0b\u8fdb\u884c\u963b\u585e\u7b49\u5f85\uff0c\u76f4\u5230\u751f\u4ea7\u8005\u751f\u4ea7\u5b8c\u4e00\u4e2a\u6570\u636e\u540e\u5bf9data_sem\u8fdb\u884c\u4e86V\u64cd\u4f5c\uff0c\u6d88\u8d39\u8005\u624d\u4f1a\u88ab\u5524\u9192\u8fdb\u800c\u8fdb\u884c\u6d88\u8d39\u3002<\/p>\n\n\n\n<p>\u5f53\u7531\u4e8e\u6d88\u8d39\u8005\u7684\u6d88\u8d39\u901f\u5ea6\u5f88\u5feb\uff0c\u6d88\u8d39\u8005\u6d88\u8d39\u5b8c\u4e00\u4e2a\u6570\u636e\u540e\u53c8\u4f1a\u8fdb\u884c\u7b49\u5f85\uff0c\u56e0\u6b64\u540e\u7eed\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7684\u6b65\u8c03\u53c8\u53d8\u6210\u4e00\u81f4\u7684\u4e86\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' 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is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5728blank_sem\u548cdata_sem\u4e24\u4e2a\u4fe1\u53f7\u91cf\u7684\u4fdd\u62a4\u540e\uff0c\u8be5\u73af\u5f62\u961f\u5217\u4e2d\u4e0d\u53ef\u80fd\u4f1a\u51fa\u73b0\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u56e0\u4e3a\u53ea\u6709\u5f53\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u6267\u884c\u540c\u4e00\u4e2a\u4f4d\u7f6e\u5e76\u8bbf\u95ee\u65f6\uff0c\u624d\u4f1a\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\uff0c\u800c\u6b64\u65f6\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u5728\u5bf9\u73af\u5f62\u961f\u5217\u8fdb\u884c\u5199\u5165\u6216\u8bfb\u51fa\u6570\u636e\u65f6\uff0c\u53ea\u6709\u4e24\u79cd\u60c5\u51b5\u4f1a\u6307\u5411\u540c\u4e00\u4e2a\u4f4d\u7f6e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u73af\u5f62\u961f\u5217\u4e3a\u7a7a\u65f6\u3002<\/li>\n\n\n\n<li>\u73af\u5f62\u961f\u5217\u4e3a\u6ee1\u65f6\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4f46\u662f\u5728\u8fd9\u4e24\u79cd\u60c5\u51b5\u4e0b\uff0c\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u4e0d\u4f1a\u540c\u65f6\u5bf9\u73af\u5f62\u961f\u5217\u8fdb\u884c\u8bbf\u95ee\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u73af\u5f62\u961f\u5217\u4e3a\u7a7a\u7684\u65f6\u5019\uff0c\u6d88\u8d39\u8005\u4e00\u5b9a\u4e0d\u80fd\u8fdb\u884c\u6d88\u8d39\uff0c\u56e0\u4e3a\u6b64\u65f6\u6570\u636e\u8d44\u6e90\u4e3a0\u3002<\/li>\n\n\n\n<li>\u5f53\u73af\u5f62\u961f\u5217\u4e3a\u6ee1\u7684\u65f6\u5019\uff0c\u751f\u4ea7\u8005\u4e00\u5b9a\u4e0d\u80fd\u8fdb\u884c\u751f\u4ea7\uff0c\u56e0\u4e3a\u6b64\u65f6\u7a7a\u95f4\u8d44\u6e90\u4e3a0\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u5f53\u73af\u5f62\u961f\u5217\u4e3a\u7a7a\u548c\u6ee1\u7684\u65f6\u5019\uff0c\u6211\u4eec\u5df2\u7ecf\u901a\u8fc7\u4fe1\u53f7\u91cf\u4fdd\u8bc1\u4e86\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7684\u4e32\u884c\u5316\u8fc7\u7a0b\uff08\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u4e4b\u95f4\u7684\u64cd\u4f5c\u662f\u4f9d\u6b21\u6267\u884c\u7684\uff09\u3002\u800c\u9664\u4e86\u8fd9\u4e24\u79cd\u60c5\u51b5\u4e4b\u5916\uff0c\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u6307\u5411\u7684\u90fd\u4e0d\u662f\u540c\u4e00\u4e2a\u4f4d\u7f6e\uff0c\u56e0\u6b64\u8be5\u73af\u5f62\u961f\u5217\u5f53\u4e2d\u4e0d\u53ef\u80fd\u4f1a\u51fa\u73b0\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002\u5e76\u4e14\u5927\u90e8\u5206\u60c5\u51b5\u4e0b\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u6307\u5411\u7684\u5e76\u4e0d\u662f\u540c\u4e00\u4e2a\u4f4d\u7f6e\uff0c\u56e0\u6b64\u5927\u90e8\u5206\u60c5\u51b5\u4e0b\u8be5\u73af\u5f62\u961f\u5217\u53ef\u4ee5\u8ba9\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u5e76\u53d1\u7684\u6267\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>POSIX\u4fe1\u53f7\u91cf 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[&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":[34,33],"class_list":["post-159","post","type-post","status-publish","format-standard","hentry","category-linux","category-learn","tag-34","tag-33"],"_links":{"self":[{"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/posts\/159","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=159"}],"version-history":[{"count":1,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/posts\/159\/revisions"}],"predecessor-version":[{"id":160,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/posts\/159\/revisions\/160"}],"wp:attachment":[{"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/media?parent=159"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/categories?post=159"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codergodv.xyz\/index.php\/wp-json\/wp\/v2\/tags?post=159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}