{"id":72158,"date":"2026-02-04T23:25:02","date_gmt":"2026-02-04T15:25:02","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/72158.html"},"modified":"2026-02-04T23:25:02","modified_gmt":"2026-02-04T15:25:02","slug":"posix-%e4%bf%a1%e5%8f%b7%e9%87%8f%ef%bc%9a%e5%9f%ba%e4%ba%8e%e7%8e%af%e5%bd%a2%e9%98%9f%e5%88%97%e7%9a%84%e7%94%9f%e4%ba%a7%e8%80%85%e6%b6%88%e8%b4%b9%e8%80%85%e6%a8%a1%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/72158.html","title":{"rendered":"POSIX 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src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260204152500-698364cca4db3.png\" width=\"689\" \/><\/p>\n<ul>\n<li>sem<\/li>\n<li>\u8981\u521d\u59cb\u5316\u7684\u4fe1\u53f7\u91cf\u5bf9\u8c61\u5730\u5740(\u548c\u7ebf\u7a0b\u521b\u5efa\u65f6\u8c03\u7528\u7684\u51fd\u6570pthread_create\u4e2d\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u7c7b\u4f3c&#xff0c;\u901a\u8fc7\u6307\u9488\u8fd4\u56de\u7ebf\u7a0bID&#xff0c;\u8fd9\u91cc\u662f\u5bf9\u4fe1\u53f7\u91cf\u8fd9\u4e2a\u5bf9\u8c61\u8fdb\u884c\u521d\u59cb\u5316\u3002)<\/li>\n<li>pshared<\/li>\n<li>0&#xff1a;\u7ebf\u7a0b\u95f4\u5171\u4eab&#xff08;\u6700\u5e38\u7528&#xff09;<\/li>\n<li>\u975e 0&#xff1a;\u8fdb\u7a0b\u95f4\u5171\u4eab<\/li>\n<li>value<\/li>\n<li>\u4fe1\u53f7\u91cf\u521d\u59cb\u503c&#xff08;\u8d44\u6e90\u4e2a\u6570&#xff09;<\/li>\n<\/ul>\n<h3>\u9500\u6bc1\u4fe1\u53f7\u91cf<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"130\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260204152500-698364ccbad02.png\" width=\"536\" \/><\/p>\n<ul>\n<li>sem&#xff1a;\u8981\u9500\u6bc1\u7684\u4fe1\u53f7\u91cf\u5bf9\u8c61\u5730\u5740<\/li>\n<\/ul>\n<h3>\u7b49\u5f85\u4fe1\u53f7\u91cf<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"140\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260204152500-698364ccc66af.png\" width=\"802\" \/><\/p>\n<p>\u8fd9\u4e2a\u5c31\u76f8\u5f53\u4e8e\u6211\u4eec\u5728\u5b66\u4e60\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684P\u64cd\u4f5c&#xff0c;\u5f53\u4fe1\u53f7\u91cf\u7684\u503c\u5927\u4e8e0&#xff0c;\u5bf9\u5176\u8fdb\u884c\u51cf\u4e00&#xff1b;\u5f53\u4fe1\u53f7\u91cf\u7684\u503c\u7b49\u4e8e0&#xff0c;\u8fdb\u884c\u963b\u585e\u7b49\u5f85\u3002<\/p>\n<ul>\n<li>\n<p>sem&#xff1a;\u8981\u64cd\u4f5c\u7684\u4fe1\u53f7\u91cf\u5bf9\u8c61\u5730\u5740<\/p>\n<\/li>\n<\/ul>\n<h3>\u5f52\u8fd8\u4fe1\u53f7\u91cf<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"105\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260204152500-698364ccd78eb.png\" width=\"574\" \/><\/p>\n<p>\u540c\u7406&#xff0c;\u8fd9\u4e2a\u5c31\u76f8\u5f53\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684V\u64cd\u4f5c&#xff0c;\u5c06\u4fe1\u53f7\u91cf\u7684\u503c\u8fdb\u884c\u52a0\u4e00&#xff0c;\u5982\u679c\u6b64\u65f6\u6709\u7ebf\u7a0b\u6b63\u5728\u7b49\u5f85\u4fe1\u53f7\u91cf&#xff0c;\u8fd9\u4e2a\u65f6\u5019\u5524\u9192\u5176\u4e2d\u7684\u4e00\u4e2a\u5373\u53ef\u3002<\/p>\n<ul>\n<li>sem&#xff1a;\u8981\u64cd\u4f5c\u7684\u4fe1\u53f7\u91cf\u5bf9\u8c61\u5730\u5740<\/li>\n<\/ul>\n<p>\u5728\u4e4b\u524d\u6211\u4eec\u5c31\u5bf9\u4fe1\u53f7\u91cf\u6709\u6240\u4e86\u89e3&#xff0c;\u4fe1\u53f7\u91cf\u7684\u672c\u8d28\u662f\u4e00\u628a\u8ba1\u6570\u5668&#xff0c;\u7528\u6765\u63cf\u8ff0\u4e34\u754c\u8d44\u6e90\u4e2d\u8d44\u6e90\u6570\u91cf\u7684\u591a\u5c11\u3002\u4e5f\u5c31\u662f\u6211\u4eec\u7684\u591a\u7ebf\u7a0b\u5728\u7533\u8bf7\u5171\u4eab\u8d44\u6e90\u65f6&#xff0c;\u4e0d\u662f\u76f4\u63a5\u53bb\u62ff\u5171\u4eab\u8d44\u6e90&#xff0c;\u5b83\u9996\u5148\u4f1a\u5bf9\u8fd9\u4e2a\u5171\u4eab\u8d44\u6e90\u8fdb\u884c\u9884\u5b9a&#xff0c;\u901a\u8fc7\u5148\u7533\u8bf7\u8fd9\u4e2a\u4fe1\u53f7\u91cf\u6210\u529f\u4e4b\u540e&#xff0c;\u5c31\u4fdd\u8bc1\u4e86\u8fd9\u4e2a\u5171\u4eab\u8d44\u6e90\u5df2\u7ecf\u88ab\u8be5\u7ebf\u7a0b\u83b7\u53d6\u5230\u4e86(\u7528\u770b\u7535\u5f71\u7684\u4f8b\u5b50\u8fdb\u884c\u5bf9\u6bd4\u5c31\u662f&#xff0c;\u7535\u5f71\u9662\u6240\u6709\u7684\u5ea7\u4f4d\u5c31\u662f\u4fe1\u53f7\u91cf\u7684\u503c&#xff0c;\u6211\u4eec\u60f3\u8981\u83b7\u53d6\u5176\u4e2d\u7684\u4e00\u4e2a\u5ea7\u4f4d\u53bb\u770b\u7535\u5f71&#xff0c;\u4e0d\u662f\u8bf4\u6211\u4eec\u505a\u5230\u4f4d\u7f6e\u4e0a&#xff0c;\u8fd9\u4e2a\u4f4d\u7f6e\u5c31\u5c5e\u4e8e\u6211\u4eec&#xff0c;\u800c\u662f\u6211\u4eec\u5fc5\u987b\u5148\u8fdb\u884c\u4e70\u7968&#xff0c;\u4e70\u7968\u7684\u8fd9\u4e2a\u884c\u4e3a\u5c31\u662f\u6211\u4eec\u5728\u7533\u8bf7\u4fe1\u53f7\u91cf&#xff0c;\u5f53\u6211\u4eec\u6210\u529f\u8d2d\u4e70\u4e86\u7968\u4e4b\u540e(\u6210\u529f\u7533\u8bf7\u5230\u4fe1\u53f7\u91cf)&#xff0c;\u610f\u5473\u7740\u6211\u4eec\u8fd9\u4e2a\u5ea7\u4f4d\u624d\u662f\u6211\u4eec)&#xff0c;\u56e0\u6b64\u591a\u7ebf\u7a0b\u5728\u8fdb\u884c\u6570\u636e\u8bbf\u95ee\u7684\u65f6\u5019&#xff0c;\u6211\u4eec\u4f1a\u5148\u901a\u8fc7\u4fe1\u53f7\u91cf\u8bb0\u5f55\u6240\u6709\u7684\u5171\u4eab\u8d44\u6e90&#xff0c;\u5982\u679c\u53c8\u7ebf\u7a0b\u60f3\u8981\u8bbf\u95ee\u8be5\u6570\u636e&#xff0c;\u5148\u5f97\u7533\u8bf7\u4fe1\u53f7\u91cf&#xff0c;\u7136\u540e\u624d\u53ef\u4ee5\u5bf9\u8be5\u6570\u636e\u8fdb\u884c\u8bbf\u95ee\u3002<\/p>\n<p>\u4fe1\u53f7\u91cf\u7684\u7533\u8bf7&#xff08;sem_wait&#xff09;\u548c\u91ca\u653e&#xff08;sem_post&#xff09;\u64cd\u4f5c\u662f\u539f\u5b50\u7684\u3002\u4e5f\u5c31\u662f\u8bf4&#xff0c;\u5f53\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u7533\u8bf7\u6216\u91ca\u653e\u540c\u4e00\u4e2a\u4fe1\u53f7\u91cf\u65f6&#xff0c;\u64cd\u4f5c\u4f1a\u88ab\u5185\u6838\u4fdd\u8bc1\u4e00\u6b21\u53ea\u88ab\u4e00\u4e2a\u7ebf\u7a0b\u5b8c\u6574\u6267\u884c&#xff0c;\u4e0d\u4f1a\u51fa\u73b0\u8d44\u6e90\u8ba1\u6570\u9519\u8bef\u6216\u7ade\u4e89\u6761\u4ef6\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u4fdd\u8bc1\u4fe1\u53f7\u91cf\u7533\u8bf7\u548c\u91ca\u653e\u7684\u5b8c\u6574\u6027&#xff0c;\u4fdd\u8bc1\u4e86\u4fe1\u53f7\u91cf\u7684\u5b89\u5168\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"563\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260204152500-698364cce2c7b.png\" width=\"757\" \/><\/p>\n<p>\u5728\u4e4b\u524d\u6211\u4eec\u7684\u57fa\u4e8e\u963b\u585e\u961f\u5217\u7684\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u6a21\u578b\u4e2d&#xff0c;\u4e3a\u4e86\u4fdd\u8bc1\u8bbf\u95ee\u4e34\u754c\u8d44\u6e90\u7684\u5b89\u5168&#xff0c;\u6211\u4eec\u5fc5\u987b\u5148\u8fdb\u884c\u4e0a\u9501&#xff0c;\u7136\u540e\u518d\u8fdb\u884c\u5224\u65ad\u662f\u5426\u8d44\u6e90\u7684\u6570\u91cf\u662f\u5426\u6ee1\u8db3&#xff0c;\u5982\u679c\u6ee1\u8db3&#xff0c;\u7ee7\u7eed\u6267\u884c&#xff1b;\u4e0d\u6ee1\u8db3&#xff0c;\u963b\u585e\u7b49\u5f85\u3002\u4f46\u662f\u73b0\u5728\u4fe1\u53f7\u91cf\u4e0d\u4e00\u6837\u4e86&#xff0c;\u56e0\u4e3a\u4fe1\u53f7\u91cf\u672c\u6765\u5c31\u662f\u8868\u793a\u8d44\u6e90\u7684\u6570\u91cf&#xff0c;\u53ea\u8981\u6211\u4eec\u7533\u8bf7\u4fe1\u53f7\u91cf\u6210\u529f\u4e86&#xff0c;\u5c31\u8868\u660e\u8d44\u6e90\u4e00\u5b9a\u662f\u5c31\u7eea\u7684&#xff0c;\u8fd9\u4e2a\u65f6\u5019\u6211\u4eec\u5c31\u4e0d\u9700\u8981\u518d\u8fdb\u884c\u8d44\u6e90\u662f\u5426\u6ee1\u8db3\u7684\u5224\u65ad\u4e86&#xff0c;\u8fd9\u5c31\u662f\u4fe1\u53f7\u91cf\u7684\u597d\u5904&#xff0c;\u53ea\u8981\u7533\u8bf7\u5230\u4fe1\u53f7\u91cf&#xff0c;\u8d44\u6e90\u5c31\u4e00\u5b9a\u6709\u3002<\/p>\n<p>\u5728\u4e0a\u4e00\u7bc7\u535a\u5ba2\u4e2d\u6211\u4eec\u57fa\u4e8equeue&#xff0c;\u901a\u8fc7\u4e92\u65a5\u9501&#043;\u6761\u4ef6\u53d8\u91cf\u7684\u65b9\u5f0f\u5b9e\u73b0\u4e86\u4e00\u4e2a\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u6a21\u5f0f&#xff0c;\u73b0\u5728&#xff0c;\u6211\u4eec\u57fa\u4e8e\u73af\u5f62\u961f\u5217&#xff0c;\u901a\u8fc7\u4fe1\u53f7\u91cf\u7684\u65b9\u5f0f\u518d\u6b21\u5b9e\u73b0\u4e00\u4e2a\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u6a21\u5f0f\u3002<\/p>\n<h2>RingQueue:\u73af\u5f62\u961f\u5217<\/h2>\n<h4>\u73af\u5f62\u961f\u5217\u7b80\u4ecb<\/h4>\n<p>\u73af\u5f62\u961f\u5217\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u6570\u7ec4&#xff0c;\u901a\u8fc7\u53d6\u6a21\u8fd0\u7b97\u8ba9\u4e0b\u6807\u9996\u5c3e\u76f8\u8fde&#xff0c;\u4ece\u800c\u5b9e\u73b0\u903b\u8f91\u4e0a\u7684\u201c\u5faa\u73af\u201d\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"435\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260204152501-698364cd07ddc.png\" width=\"441\" \/><\/p>\n<p>\u793a\u610f\u5982\u4e0b&#xff1a;<\/p>\n<ul>\n<li>\n<p>p_index_&#xff1a;\u751f\u4ea7\u8005\u5199\u5165\u4f4d\u7f6e<\/p>\n<\/li>\n<li>\n<p>c_index_&#xff1a;\u6d88\u8d39\u8005\u8bfb\u53d6\u4f4d\u7f6e<\/p>\n<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u6570\u7ec4\u6765\u6a21\u62df\u5b9e\u73b0\u73af\u5f62\u961f\u5217&#xff0c;\u5f53\u961f\u5217\u4e3a\u6ee1\u548c\u4e3a\u7a7a\u65f6\u3002\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7684\u7d22\u5f15\u4f1a\u5904\u4e8e\u540c\u4e00\u4f4d\u7f6e&#xff1b;\u5f53\u961f\u5217\u4e3a\u7a7a\u65f6&#xff0c;\u8fd9\u4e2a\u65f6\u5019\u53ea\u6709\u751f\u4ea7\u8005\u751f\u4ea7\u6570\u636e\u4e4b\u540e&#xff0c;\u6d88\u8d39\u8005\u624d\u53ef\u4ee5\u8fdb\u884c\u6d88\u8017\u6570\u636e&#xff1b;\u540c\u65f6&#xff0c;\u5f53\u961f\u5217\u4e3a\u6ee1\u7684\u65f6\u5019&#xff0c;\u53ea\u6709\u6d88\u8d39\u8005\u6d88\u8017\u6570\u636e\u4e4b\u540e&#xff0c;\u751f\u4ea7\u8005\u624d\u53ef\u4ee5\u7ee7\u7eed\u751f\u4ea7\u6570\u636e\u3002\u4f46\u662f\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u5173\u6ce8\u7684\u6570\u636e\u4e0d\u4e00\u81f4&#xff0c;\u751f\u4ea7\u8005\u5173\u6ce8\u7684\u662f\u961f\u5217\u4e2d\u8fd8\u6709\u51e0\u4e2a\u7a7a\u4f4d&#xff0c;\u800c\u6d88\u8d39\u8005\u5173\u6ce8\u7684\u662f\u961f\u5217\u4e2d\u8fd8\u6709\u591a\u5c11\u6570\u636e&#xff0c;\u5c31\u597d\u6bd4\u751f\u6d3b\u4e2d&#xff0c;\u4f9b\u8d27\u5546\u4e0d\u4f1a\u5173\u5fc3\u8d85\u5e02\u7684\u4e1c\u897f\u8fd8\u6709\u591a\u5c11&#xff0c;\u5b83\u4eec\u53ea\u4f1a\u5173\u5fc3\u8d85\u5e02\u73b0\u5728\u7a7a\u4e0b\u6765\u591a\u5c11\u4f4d\u7f6e&#xff0c;\u5b83\u597d\u7ee7\u7eed\u4f9b\u8d27&#xff0c;\u540c\u6837\u6211\u4eec\u53bb\u8d85\u5e02\u8d2d\u7269\u7684\u65f6\u5019&#xff0c;\u4e0d\u4f1a\u5173\u5fc3\u8d85\u5e02\u7a7a\u4e0b\u591a\u5c11\u4f4d\u7f6e\u4e86&#xff0c;\u53ea\u4f1a\u5173\u5fc3\u6211\u60f3\u8981\u7684\u4e1c\u897f\u8fd8\u6709\u6ca1\u6709\u3002<\/p>\n<h2>\u6838\u5fc3\u6570\u636e\u7ed3\u6784\u8bbe\u8ba1<\/h2>\n<p>\u73af\u5f62\u961f\u5217\u7c7b\u4e2d\u901a\u5e38\u5305\u542b\u4ee5\u4e0b\u5173\u952e\u6210\u5458&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5b58\u50a8\u6570\u636e\u7684\u5bb9\u5668&#xff08;std::vector&lt;T&gt; rq_&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u961f\u5217\u5bb9\u91cf&#xff08;capacity&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u751f\u4ea7\u8005\u4e0b\u6807&#xff08;p_index_&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u6d88\u8d39\u8005\u4e0b\u6807&#xff08;c_index_&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u540c\u6b65\u539f\u8bed&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u7a7a\u4f4d\u4fe1\u53f7\u91cf&#xff08;p_sem_&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u6570\u636e\u4fe1\u53f7\u91cf&#xff08;c_sem_&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u751f\u4ea7\u8005\u4e92\u65a5\u9501&#xff08;p_mutex_&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u6d88\u8d39\u8005\u4e92\u65a5\u9501&#xff08;c_mutex_&#xff09;<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>\u7a7a\u4f4d\u4fe1\u53f7\u91cf&#xff08;p_sem_&#xff09;<\/h4>\n<p>sem_init(&amp;blank_sem, 0, capacity);<\/p>\n<p>\u56e0\u4e3a\u5728\u521d\u59cb\u5316\u7684\u65f6\u5019&#xff0c;\u73af\u5f62\u961f\u5217\u4e2d\u90fd\u662f\u7a7a\u4f4d&#xff0c;\u6ca1\u6709\u4e00\u4e2a\u6570\u636e&#xff0c;\u6240\u4ee5\u8fd9\u4e2a\u65f6\u5019\u7a7a\u4f4d\u4fe1\u53f7\u91cf\u521d\u59cb\u5316\u7684\u503c\u8bbe\u7f6e\u4e3a\u73af\u5f62\u961f\u5217\u7684\u5927\u5c0f<\/p>\n<p>\u4f5c\u7528&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5f53\u961f\u5217\u5df2\u6ee1\u65f6&#xff0c;\u751f\u4ea7\u8005\u4f1a\u5728\u8be5\u4fe1\u53f7\u91cf\u4e0a\u963b\u585e<\/p>\n<\/li>\n<li>\n<p>\u4fdd\u8bc1\u4e0d\u4f1a\u5411\u6ee1\u961f\u5217\u4e2d\u5199\u5165\u6570\u636e<\/p>\n<\/li>\n<\/ul>\n<h4>\u6570\u636e\u4fe1\u53f7\u91cf&#xff08;c_sem_&#xff09;<\/h4>\n<p>sem_init(&amp;data_sem, 0, 0);<\/p>\n<p>\u540c\u6837&#xff0c;\u5728\u521d\u59cb\u5316\u7684\u65f6\u5019&#xff0c;\u73af\u5f62\u961f\u5217\u4e2d\u662f\u6ca1\u6709\u6570\u636e\u7684&#xff0c;\u6240\u4ee5\u8fd9\u4e2a\u65f6\u5019\u6570\u636e\u4fe1\u53f7\u91cf\u5728\u8fdb\u884c\u521d\u59cb\u5316\u7684\u65f6\u5019\u5c06\u5176\u8bbe\u7f6e\u4e3a0&#xff1b;<\/p>\n<p>\u4f5c\u7528&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5f53\u961f\u5217\u4e3a\u7a7a\u65f6&#xff0c;\u6d88\u8d39\u8005\u4f1a\u5728\u8be5\u4fe1\u53f7\u91cf\u4e0a\u963b\u585e<\/p>\n<\/li>\n<li>\n<p>\u4fdd\u8bc1\u4e0d\u4f1a\u4ece\u7a7a\u961f\u5217\u4e2d\u8bfb\u53d6\u6570\u636e<\/p>\n<\/li>\n<\/ul>\n<h2>\u5b8c\u6574\u4ee3\u7801<\/h2>\n<h3>\u57fa\u4e8e\u4fe1\u53f7\u91cf\u7684\u73af\u5f62\u961f\u5217<\/h3>\n<p>template &lt;class T&gt;<br \/>\nclass RingQueue<br \/>\n{<br \/>\npublic:<br \/>\n    \/\/ \u6784\u9020\u51fd\u6570<br \/>\n    \/\/ c_index : \u6d88\u8d39\u8005\u4e0b\u6807<br \/>\n    \/\/ p_index : \u751f\u4ea7\u8005\u4e0b\u6807<br \/>\n    \/\/ capacity: \u73af\u5f62\u961f\u5217\u5bb9\u91cf<br \/>\n    RingQueue(int c_index &#061; 0, int p_index &#061; 0, int capacity &#061; 10)<br \/>\n        : c_index_(c_index), p_index_(p_index), capacity_(capacity)<br \/>\n    {<br \/>\n        \/\/ 1. \u521d\u59cb\u5316\u73af\u5f62\u961f\u5217\u7a7a\u95f4<br \/>\n        \/\/ resize \u4f1a\u9ed8\u8ba4\u6784\u9020 capacity \u4e2a T \u5bf9\u8c61<br \/>\n        rq_.resize(capacity_);<\/p>\n<p>        \/\/ 2. \u521d\u59cb\u5316\u4fe1\u53f7\u91cf<br \/>\n        \/\/ p_sem_&#xff1a;\u8868\u793a\u201c\u7a7a\u4f4d\u8d44\u6e90\u201d\u7684\u6570\u91cf<br \/>\n        \/\/ \u521d\u59cb\u503c\u4e3a capacity&#xff0c;\u8868\u793a\u4e00\u5f00\u59cb\u961f\u5217\u662f\u7a7a\u7684&#xff0c;\u6709 capacity \u4e2a\u7a7a\u4f4d<br \/>\n        sem_init(&amp;p_sem_, 0, capacity_);<\/p>\n<p>        \/\/ c_sem_&#xff1a;\u8868\u793a\u201c\u6570\u636e\u8d44\u6e90\u201d\u7684\u6570\u91cf<br \/>\n        \/\/ \u521d\u59cb\u503c\u4e3a 0&#xff0c;\u8868\u793a\u4e00\u5f00\u59cb\u6ca1\u6709\u6570\u636e\u53ef\u6d88\u8d39<br \/>\n        sem_init(&amp;c_sem_, 0, 0);<\/p>\n<p>        \/\/ 3. \u521d\u59cb\u5316\u4e92\u65a5\u9501<br \/>\n        \/\/ p_mutex_&#xff1a;\u4fdd\u62a4\u751f\u4ea7\u8005\u5199\u5165\u4e34\u754c\u533a<br \/>\n        \/\/ c_mutex_&#xff1a;\u4fdd\u62a4\u6d88\u8d39\u8005\u8bfb\u53d6\u4e34\u754c\u533a<br \/>\n        pthread_mutex_init(&amp;p_mutex_, nullptr);<br \/>\n        pthread_mutex_init(&amp;c_mutex_, nullptr);<br \/>\n    }<\/p>\n<p>    \/\/ \u751f\u4ea7\u8005\u63a5\u53e3&#xff1a;\u5411\u961f\u5217\u4e2d\u653e\u5165\u4e00\u4e2a\u5143\u7d20<br \/>\n    void push(const T in)<br \/>\n    {<br \/>\n        \/\/ 1. \u7533\u8bf7\u201c\u7a7a\u4f4d\u8d44\u6e90\u201d<br \/>\n        \/\/ \u5982\u679c\u961f\u5217\u6ee1\u4e86&#xff08;p_sem_ &#061;&#061; 0&#xff09;&#xff0c;\u751f\u4ea7\u8005\u5728\u6b64\u963b\u585e<br \/>\n        sem_wait(&amp;p_sem_);<\/p>\n<p>        \/\/ 2. \u52a0\u9501&#xff0c;\u8fdb\u5165\u751f\u4ea7\u8005\u4e34\u754c\u533a<br \/>\n        pthread_mutex_lock(&amp;p_mutex_);<\/p>\n<p>        \/\/ 3. \u5199\u5165\u6570\u636e<br \/>\n        rq_[p_index_] &#061; in;<\/p>\n<p>        \/\/ 4. \u66f4\u65b0\u751f\u4ea7\u8005\u4e0b\u6807&#xff08;\u73af\u5f62&#xff09;<br \/>\n        p_index_&#043;&#043;;<br \/>\n        p_index_ %&#061; rq_.size();<\/p>\n<p>        \/\/ 5. \u89e3\u9501&#xff0c;\u9000\u51fa\u4e34\u754c\u533a<br \/>\n        pthread_mutex_unlock(&amp;p_mutex_);<\/p>\n<p>        \/\/ 6. \u901a\u77e5\u6d88\u8d39\u8005&#xff1a;\u6709\u65b0\u7684\u6570\u636e\u53ef\u4ee5\u6d88\u8d39<br \/>\n        sem_post(&amp;c_sem_);<br \/>\n    }<\/p>\n<p>    \/\/ \u6d88\u8d39\u8005\u63a5\u53e3&#xff1a;\u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u4e00\u4e2a\u5143\u7d20<br \/>\n    T pop()<br \/>\n    {<br \/>\n        \/\/ 1. \u7533\u8bf7\u201c\u6570\u636e\u8d44\u6e90\u201d<br \/>\n        \/\/ \u5982\u679c\u961f\u5217\u4e3a\u7a7a&#xff08;c_sem_ &#061;&#061; 0&#xff09;&#xff0c;\u6d88\u8d39\u8005\u5728\u6b64\u963b\u585e<br \/>\n        sem_wait(&amp;c_sem_);<\/p>\n<p>        \/\/ 2. \u52a0\u9501&#xff0c;\u8fdb\u5165\u6d88\u8d39\u8005\u4e34\u754c\u533a<br \/>\n        pthread_mutex_lock(&amp;c_mutex_);<\/p>\n<p>        \/\/ 3. \u8bfb\u53d6\u6570\u636e<br \/>\n        T temp &#061; rq_[c_index_];<\/p>\n<p>        \/\/ 4. \u66f4\u65b0\u6d88\u8d39\u8005\u4e0b\u6807&#xff08;\u73af\u5f62&#xff09;<br \/>\n        c_index_&#043;&#043;;<br \/>\n        c_index_ %&#061; rq_.size();<\/p>\n<p>        \/\/ 5. \u89e3\u9501&#xff0c;\u9000\u51fa\u4e34\u754c\u533a<br \/>\n        pthread_mutex_unlock(&amp;c_mutex_);<\/p>\n<p>        \/\/ 6. \u901a\u77e5\u751f\u4ea7\u8005&#xff1a;\u91ca\u653e\u4e86\u4e00\u4e2a\u7a7a\u4f4d<br \/>\n        sem_post(&amp;p_sem_);<\/p>\n<p>        return temp;<br \/>\n    }<\/p>\n<p>    \/\/ \u6790\u6784\u51fd\u6570&#xff1a;\u91ca\u653e\u7cfb\u7edf\u8d44\u6e90<br \/>\n    ~RingQueue()<br \/>\n    {<br \/>\n        sem_destroy(&amp;c_sem_);<br \/>\n        sem_destroy(&amp;p_sem_);<br \/>\n        pthread_mutex_destroy(&amp;c_mutex_);<br \/>\n        pthread_mutex_destroy(&amp;p_mutex_);<br \/>\n    }<\/p>\n<p>private:<br \/>\n    \/\/ \u5b58\u50a8\u6570\u636e\u7684\u73af\u5f62\u961f\u5217<br \/>\n    std::vector&lt;T&gt; rq_;<\/p>\n<p>    \/\/ \u6d88\u8d39\u8005\u8bfb\u53d6\u4f4d\u7f6e<br \/>\n    int c_index_;<\/p>\n<p>    \/\/ \u751f\u4ea7\u8005\u5199\u5165\u4f4d\u7f6e<br \/>\n    int p_index_;<\/p>\n<p>    \/\/ \u961f\u5217\u5bb9\u91cf<br \/>\n    int capacity_;<\/p>\n<p>    \/\/ \u6570\u636e\u4fe1\u53f7\u91cf&#xff1a;\u5f53\u524d\u53ef\u6d88\u8d39\u7684\u6570\u636e\u6570\u91cf<br \/>\n    sem_t c_sem_;<\/p>\n<p>    \/\/ \u7a7a\u4f4d\u4fe1\u53f7\u91cf&#xff1a;\u5f53\u524d\u53ef\u7528\u7684\u7a7a\u4f4d\u6570\u91cf<br \/>\n    sem_t p_sem_;<\/p>\n<p>    \/\/ \u6d88\u8d39\u8005\u4e92\u65a5\u9501<br \/>\n    pthread_mutex_t c_mutex_;<\/p>\n<p>    \/\/ \u751f\u4ea7\u8005\u4e92\u65a5\u9501<br \/>\n    pthread_mutex_t p_mutex_;<br \/>\n};<\/p>\n<h3>Task\u4efb\u52a1<\/h3>\n<p>class Task<br \/>\n{<br \/>\npublic:<br \/>\n    \/\/ \u9ed8\u8ba4\u6784\u9020\u51fd\u6570<br \/>\n    \/\/ vector::resize \u9700\u8981\u7c7b\u578b\u652f\u6301\u9ed8\u8ba4\u6784\u9020<br \/>\n    Task() {}<\/p>\n<p>    \/\/ \u5e26\u53c2\u6784\u9020\u51fd\u6570<br \/>\n    Task(int x, int y, char oper, int result &#061; 0, int exitcode &#061; 0)<br \/>\n        : x_(x), y_(y), oper_(oper), result_(result), exitcode_(exitcode)<br \/>\n    {<br \/>\n    }<\/p>\n<p>    \/\/ \u6267\u884c\u4efb\u52a1<br \/>\n    void run()<br \/>\n    {<br \/>\n        switch (oper_)<br \/>\n        {<br \/>\n        case &#039;&#043;&#039;:<br \/>\n            result_ &#061; x_ &#043; y_;<br \/>\n            break;<br \/>\n        case &#039;-&#039;:<br \/>\n            result_ &#061; x_ &#8211; y_;<br \/>\n            break;<br \/>\n        case &#039;*&#039;:<br \/>\n            result_ &#061; x_ * y_;<br \/>\n            break;<br \/>\n        case &#039;\/&#039;:<br \/>\n            if (y_ &#061;&#061; 0)<br \/>\n                exitcode_ &#061; 1;<br \/>\n            else<br \/>\n                result_ &#061; x_ \/ y_;<br \/>\n            break;<br \/>\n        case &#039;%&#039;:<br \/>\n            if (y_ &#061;&#061; 0)<br \/>\n                exitcode_ &#061; 2;<br \/>\n            else<br \/>\n                result_ &#061; x_ % y_;<br \/>\n        }<\/p>\n<p>        printf(&#034;%d %c %d &#061; %d[%d]\\\\n&#034;, x_, oper_, y_, result_, exitcode_);<br \/>\n    }<\/p>\n<p>    \/\/ \u6253\u5370\u4efb\u52a1\u5185\u5bb9&#xff08;\u672a\u6267\u884c&#xff09;<br \/>\n    void getTask()<br \/>\n    {<br \/>\n        printf(&#034;%d %c %d &#061; ?\\\\n&#034;, x_, oper_, y_);<br \/>\n    }<\/p>\n<p>private:<br \/>\n    int x_;<br \/>\n    int y_;<br \/>\n    char oper_;<\/p>\n<p>    int result_;<br \/>\n    int exitcode_;<br \/>\n};<\/p>\n<h3>\u6d88\u8d39\u8005\u7ebf\u7a0b\u51fd\u6570<\/h3>\n<p>void *Consumer(void *args)<br \/>\n{<br \/>\n    RingQueue&lt;Task&gt; *rq &#061; (RingQueue&lt;Task&gt; *)args;<\/p>\n<p>    while (1)<br \/>\n    {<br \/>\n        \/\/ \u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u4efb\u52a1<br \/>\n        Task task &#061; rq-&gt;pop();<\/p>\n<p>        std::cout &lt;&lt; pthread_self() &lt;&lt; &#034; \u6d88\u8017\u4e86\u4e00\u4e2a\u4efb\u52a1 : &#034;;<br \/>\n        task.run();<\/p>\n<p>        sleep(2);<br \/>\n    }<br \/>\n}<\/p>\n<h3>\u751f\u4ea7\u8005\u7ebf\u7a0b\u51fd\u6570<\/h3>\n<p>void *Producer(void *args)<br \/>\n{<br \/>\n    \/\/ \u5171\u4eab\u73af\u5f62\u961f\u5217<br \/>\n    RingQueue&lt;Task&gt; *rq &#061; (RingQueue&lt;Task&gt; *)args;<\/p>\n<p>    std::string oper(&#034;&#043;-*\/%&#034;);<\/p>\n<p>    while (1)<br \/>\n    {<br \/>\n        \/\/ \u6784\u9020\u968f\u673a\u4efb\u52a1<br \/>\n        int x &#061; rand() % 10;<br \/>\n        int y &#061; rand() % 10;<br \/>\n        Task task(x, y, oper[rand() % 5]);<\/p>\n<p>        \/\/ \u5411\u961f\u5217\u4e2d\u6295\u9012\u4efb\u52a1<br \/>\n        rq-&gt;push(task);<\/p>\n<p>        std::cout &lt;&lt; pthread_self() &lt;&lt; &#034; \u751f\u4ea7\u4e86\u4e00\u4e2a\u4efb\u52a1 : &#034;;<br \/>\n        task.getTask();<\/p>\n<p>        sleep(1);<br \/>\n    }<br \/>\n}<\/p>\n<h3 style=\"background-color:transparent\">main\u51fd\u6570<\/h3>\n<p>int main()<br \/>\n{<br \/>\n    srand(time(nullptr));<\/p>\n<p>    pthread_t p[5], c[3];<\/p>\n<p>    \/\/ \u521b\u5efa\u5171\u4eab\u7684\u73af\u5f62\u961f\u5217<br \/>\n    RingQueue&lt;Task&gt; *rq &#061; new RingQueue&lt;Task&gt;;<\/p>\n<p>    \/\/ \u521b\u5efa\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7ebf\u7a0b<br \/>\n    for (int i &#061; 0; i &lt; 5; i&#043;&#043;)<br \/>\n    {<br \/>\n        pthread_create(p &#043; i, nullptr, Producer, rq);<br \/>\n    }<br \/>\n    for (int i &#061; 0; i &lt; 3; i&#043;&#043;)<br \/>\n    {<br \/>\n        pthread_create(c &#043; i, nullptr, Consumer, rq);<br \/>\n    }<\/p>\n<p>    \/\/ \u7b49\u5f85\u7ebf\u7a0b\u7ed3\u675f<br \/>\n    for (int i &#061; 0; i &lt; 5; i&#043;&#043;)<br \/>\n    {<br \/>\n        pthread_join(p[i], nullptr);<br \/>\n    }<br \/>\n    for (int i &#061; 0; i &lt; 3; i&#043;&#043;)<br \/>\n    {<br \/>\n        pthread_join(c[i], nullptr);<br \/>\n    }<\/p>\n<p>    return 0;<br \/>\n}<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"318\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260204152501-698364cd1bf92.png\" width=\"771\" \/><\/p>\n<p>\u8fd9\u6837\u57fa\u4e8e\u73af\u5f62\u961f\u5217\u7684\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u6a21\u578b\u5c31\u6210\u529f\u8fd0\u884c\u8d77\u6765\u4e86\u3002\u4f46\u662f\u5176\u4e2d\u8fd8\u6709\u4e00\u4e9b\u95ee\u9898\u9690\u85cf\u5728\u5176\u4e2d\u3002<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u4f7f\u7528\u4e24\u4e2a\u4e92\u65a5\u9501<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"553\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260204152501-698364cd397e7.png\" width=\"562\" \/><\/p>\n<p>\u7b2c\u4e00&#xff0c;\u907f\u514d\u540c\u7c7b\u7ebf\u7a0b\u4e4b\u95f4\u7684\u7ade\u4e89\u3002 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\/><\/p>\n<p>\u65b9\u6848\u4e00\u9009\u62e9\u7684\u662f\u5148\u52a0\u9501\u7136\u540e\u7533\u8bf7\u4fe1\u53f7\u91cf&#xff0c;\u65b9\u6848\u4e8c\u9009\u62e9\u7684\u662f\u5148\u7533\u8bf7\u4fe1\u53f7\u91cf\u518d\u52a0\u9501&#xff0c;\u90a3\u4e48\u6211\u4eec\u5e94\u8be5\u9009\u62e9\u54ea\u4e00\u4e2a\u65b9\u6848\u5462&#xff1f;\u53ef\u4ee5\u770b\u5230\u6211\u4eec\u7684\u4ee3\u7801\u4e2d\u9009\u62e9\u4e86\u65b9\u6848\u4e8c&#xff0c;\u8fd9\u662f\u4e3a\u4ec0\u4e48\u5462&#xff1f;<\/p>\n<p>\u5176\u4e00&#xff0c;\u56e0\u4e3a\u4fe1\u53f7\u91cf\u8d44\u6e90\u7684\u7533\u8bf7\u662f\u4e0d\u9700\u8981\u8fdb\u884c\u4fdd\u62a4\u7684&#xff0c;\u7533\u8bf7\u4fe1\u53f7\u91cf\u662f\u539f\u5b50\u7684&#xff0c;\u6240\u4ee5\u4e0d\u9700\u8981\u5728\u52a0\u9501\u6761\u4ef6\u4e0b\u8fdb\u884c\u7533\u8bf7&#xff0c;\u800c\u6211\u4eec\u52a0\u9501\u7684\u8bdd&#xff0c;\u5c31\u4f1a\u8ba9\u6211\u4eec\u7684\u591a\u7ebf\u7a0b\u8fdb\u884c\u4e32\u884c\u8bbf\u95ee&#xff0c;\u6240\u4ee5\u6211\u4eec\u8981\u4fdd\u8bc1\u6211\u4eec\u52a0\u9501\u4e4b\u540e\u7684\u4e34\u754c\u533a\u5c3d\u53ef\u80fd\u7684\u5c11&#xff0c;\u6240\u4ee5\u4e0d\u9700\u8981\u5c06\u7533\u8bf7\u4fe1\u53f7\u91cf\u653e\u5230\u52a0\u9501\u4e4b\u540e\u3002<\/p>\n<p>\u5176\u4e8c&#xff0c;\u5c31\u662f\u56e0\u4e3a\u65b9\u6848\u4e8c\u53ef\u4ee5\u63d0\u9ad8\u591a\u7ebf\u7a0b\u7684\u6267\u884c\u6548\u7387&#xff0c;\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u7533\u8bf7\u4fe1\u53f7\u91cf\u6210\u529f\u5e76\u4e14\u83b7\u5f97\u9501\u4e4b\u540e&#xff0c;\u8fd9\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u8fdb\u5165\u4e34\u754c\u533a\u6267\u884c\u4e34\u754c\u533a\u7684\u4ee3\u7801&#xff0c;\u5f53\u5176\u5b83\u7ebf\u7a0b\u5230\u6765\u7684\u65f6\u5019&#xff0c;\u5b83\u4eec\u53ef\u4ee5\u5148\u53bb\u7533\u8bf7\u4fe1\u53f7\u91cf&#xff0c;\u7136\u540e\u518d\u7533\u8bf7\u9501&#xff0c;\u8fd9\u4e2a\u65f6\u5019\u9501\u88ab\u5360\u7528&#xff0c;\u8fd9\u4e9b\u8fdb\u7a0b\u5c31\u53ea\u80fd\u7b49\u5f85&#xff0c;\u5f53\u6301\u6709\u9501\u7684\u7ebf\u7a0b\u7ed3\u675f\u91ca\u653e\u9501\u4e4b\u540e&#xff0c;\u8fd9\u4e9b\u7ebf\u7a0b\u5c31\u53ef\u4ee5\u76f4\u63a5\u53bb\u83b7\u53d6\u9501&#xff0c;\u4e0d\u9700\u8981\u518d\u53bb\u7533\u8bf7\u4fe1\u53f7\u91cf&#xff0c;\u5982\u679c\u662f\u5148\u52a0\u9501\u518d\u7533\u8bf7\u4fe1\u53f7\u91cf\u7684\u8bdd&#xff0c;\u8fd9\u4e9b\u7ebf\u7a0b\u8fd8\u5f97\u82b1\u8d39\u7533\u8bf7\u4fe1\u53f7\u91cf\u7684\u65f6\u95f4&#xff0c;\u4e0e\u5176\u8fd9\u6837&#xff0c;\u4e0d\u5982\u8ba9\u5b83\u4eec\u5728\u83b7\u53d6\u4e0d\u5230\u9501\u4e4b\u524d&#xff0c;\u5148\u7533\u8bf7\u5230\u4fe1\u53f7\u91cf&#xff0c;\u8fd9\u6837\u5c31\u53ef\u4ee5\u63d0\u9ad8\u591a\u7ebf\u7a0b\u7684\u6267\u884c\u6548\u7387&#xff0c;\u63d0\u5347\u5e76\u53d1\u5ea6\u3002<\/p>\n<p>\u5230\u8fd9\u91cc&#xff0c;\u57fa\u4e8e POSIX \u4fe1\u53f7\u91cf &#043; \u73af\u5f62\u961f\u5217 \u7684\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u6a21\u578b\u5c31\u5b8c\u6574\u8dd1\u901a\u4e86\u3002\u76f8\u6bd4\u4f20\u7edf\u7684\u201c\u4e92\u65a5\u9501 &#043; \u6761\u4ef6\u53d8\u91cf\u201d\u65b9\u6848&#xff0c;\u4fe1\u53f7\u91cf\u5929\u7136\u5c31\u5177\u5907\u8d44\u6e90\u8ba1\u6570\u7684\u8bed\u4e49&#xff0c;\u53ea\u8981 sem_wait \u6210\u529f&#xff0c;\u5c31\u610f\u5473\u7740\u8d44\u6e90\u4e00\u5b9a\u662f\u5c31\u7eea\u7684&#xff0c;\u4ee3\u7801\u903b\u8f91\u66f4\u52a0\u76f4\u63a5&#xff0c;\u4e5f\u66f4\u4e0d\u5bb9\u6613\u5199\u9519\u3002<\/p>\n<p>\u5728\u5b9e\u73b0\u4e2d&#xff0c;\u6211\u4eec\u901a\u8fc7 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