{"id":58935,"date":"2025-08-16T18:40:06","date_gmt":"2025-08-16T10:40:06","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/58935.html"},"modified":"2025-08-16T18:40:06","modified_gmt":"2025-08-16T10:40:06","slug":"linux%e8%bd%af%e4%bb%b6%e7%bc%96%e7%a8%8b-%e7%ba%bf%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/58935.html","title":{"rendered":"Linux\u8f6f\u4ef6\u7f16\u7a0b--\u7ebf\u7a0b"},"content":{"rendered":"<h4>1\u3001\u57fa\u672c\u6982\u5ff5<\/h4>\n<ul>\n<li>\u7ebf\u7a0b&#xff1a;\u7ebf\u7a0b\u662f\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u57fa\u672c\u6267\u884c\u5355\u5143&#xff0c;\u4e5f\u662f\u7a0b\u5e8f\u6267\u884c\u6d41\u7684\u6700\u5c0f\u5355\u4f4d<\/li>\n<li>\u7ebf\u7a0b\u662f\u8f7b\u91cf\u7ea7\u7684\u8fdb\u7a0b&#xff08;\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u8fdb\u7a0b&#xff0c;\u4f46\u8fdb\u7a0b\u4e0e\u7ebf\u7a0b\u7684\u7a7a\u95f4\u7ba1\u7406\u65b9\u5f0f\u4e0d\u540c&#xff09;<\/li>\n<li>\u7ebf\u7a0b\u662f CPU \u4efb\u52a1\u8c03\u5ea6\u7684\u6700\u5c0f\u5355\u5143<\/li>\n<li>\u8fdb\u7a0b\u662f\u64cd\u4f5c\u7cfb\u7edf\u8d44\u6e90\u5206\u914d\u7684\u6700\u5c0f\u5355\u5143<\/li>\n<\/ul>\n<h4>2\u3001\u7ebf\u7a0b\u7a7a\u95f4<\/h4>\n<ul>\n<li>\u7ebf\u7a0b\u5fc5\u987b\u4f4d\u4e8e\u8fdb\u7a0b\u4e2d&#xff0c;\u6ca1\u6709\u8fdb\u7a0b&#xff0c;\u7ebf\u7a0b\u65e0\u6cd5\u5355\u72ec\u5b58\u5728<\/li>\n<li>\u7ebf\u7a0b\u5171\u4eab\u6587\u672c\u6bb5\u3001\u6570\u636e\u6bb5\u3001\u5806\u533a\u7a7a\u95f4&#xff0c;\u72ec\u4eab\u6808\u533a\u7a7a\u95f4<\/li>\n<li>\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u7684\u7ebf\u7a0b\u5207\u6362\u8c03\u5ea6\u4efb\u52a1\u662f&#xff0c;\u8d44\u6e90\u5f00\u9500\u8f83\u5c0f<\/li>\n<\/ul>\n<h4>3\u3001\u591a\u7ebf\u7a0b\u4e0e\u591a\u8fdb\u7a0b\u7684\u5bf9\u6bd4<\/h4>\n<table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width:600px\">\n<tbody>\n<tr>\n<td>\u573a\u666f<\/td>\n<td>\u591a\u8fdb\u7a0b<\/td>\n<td>\u591a\u7ebf\u7a0b<\/td>\n<\/tr>\n<tr>\n<td>\u6548\u7387<\/td>\n<td>\u591a\u8fdb\u7a0b\u9700\u8981\u5207\u6362\u6620\u5c04\u7684\u7269\u7406\u5730\u5740&#xff0c;\u8d44\u6e90\u5f00\u9500\u8f83\u5927<\/td>\n<td>\u591a\u7ebf\u7a0b\u5728\u540c\u4e00\u8fdb\u7a0b\u7a7a\u95f4\u5185\u5207\u6362\u4efb\u52a1&#xff0c;\u8d44\u6e90\u5f00\u9500\u8f83\u5c0f<\/td>\n<\/tr>\n<tr>\n<td>\u901a\u4fe1<\/td>\n<td>\u591a\u8fdb\u7a0b\u95f4\u5185\u5b58\u4e0d\u5171\u4eab&#xff0c;\u9700\u8981\u901a\u8fc7\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u65b9\u6cd5\u901a\u4fe1<\/td>\n<td>\u591a\u7ebf\u7a0b\u95f4\u5171\u4eab\u7a7a\u95f4&#xff0c;\u53ea\u9700\u8981\u6539\u53d8\u5171\u4eab\u7a7a\u95f4\u7684\u6570\u636e\u5c31\u80fd\u5b8c\u6210\u901a\u4fe1<\/td>\n<\/tr>\n<tr>\n<td>\u8d44\u6e90\u7ade\u4e89<\/td>\n<td>\u591a\u8fdb\u7a0b\u4e4b\u95f4\u6ca1\u6709\u5171\u4eab\u7a7a\u95f4&#xff0c;\u4e0d\u5b58\u5728\u8d44\u6e90\u7ade\u4e89<\/td>\n<td>\u591a\u7ebf\u7a0b\u901a\u8fc7\u5171\u4eab\u7a7a\u95f4\u901a\u4fe1&#xff0c;\u9700\u4fdd\u8bc1\u8d44\u6e90\u4f7f\u7528\u7684\u4e92\u65a5\u6027&#xff0c;\u9632\u6b62\u7ebf\u7a0b\u4e4b\u95f4\u7684\u8d44\u6e90\u7ade\u4e89<\/td>\n<\/tr>\n<tr>\n<td>\u5b89\u5168<\/td>\n<td>\u591a\u8fdb\u7a0b\u95f4\u7a7a\u95f4\u72ec\u7acb&#xff0c;\u4e00\u4e2a\u7a0b\u5e8f\u5d29\u6e83\u4e0d\u4f1a\u5f71\u54cd\u5176\u4ed6\u8fdb\u7a0b&#xff0c;\u76f8\u5bf9\u8f83\u5b89\u5168<\/td>\n<td>\u591a\u7ebf\u7a0b\u95f4\u7a7a\u95f4\u5171\u4eab&#xff0c;\u4e00\u4e2a\u7a0b\u5e8f\u5d29\u6e83\u4f1a\u5f71\u54cd\u5176\u4ed6\u7ebf\u7a0b\u8fd0\u884c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>4\u3001\u7ebf\u7a0b\u7684\u8c03\u5ea6\u4e0e\u6d88\u4ea1<\/h4>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u4e0e\u8fdb\u7a0b\u7684\u8c03\u5ea6\u4e0e\u6d88\u4ea1\u4fdd\u6301\u4e00\u81f4<\/p>\n<h4>5\u3001\u7ebf\u7a0b\u7684\u51fd\u6570\u63a5\u53e3<\/h4>\n<h5>\u00a0 1.\u7ebf\u7a0b\u521b\u5efa\u63a5\u53e3<\/h5>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0pthread_create<\/p>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int pthread_create(pthread_t *thread, const pthread_attr_t *attr, void *(*start_routine) (void *), void *arg);<\/p>\n<p>\u529f\u80fd&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u5728\u8fdb\u7a0b\u4e2d\u521b\u5efa\u4e00\u4e2a\u7ebf\u7a0b<\/p>\n<p>\u53c2\u6570&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0thread&#xff1a;\u5b58\u653e\u7ebf\u7a0b ID \u7684\u9996\u5730\u5740<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0attr&#xff1a;\u7ebf\u7a0b\u7684\u5c5e\u6027&#xff0c;\u9ed8\u8ba4\u4e3a NULL<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0start_routine&#xff1a;\u7ebf\u7a0b\u51fd\u6570\u7684\u5165\u53e3<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 arg\u00a0&#xff1a;\u7ebf\u7a0b\u51fd\u6570\u7684\u53c2\u6570<\/p>\n<h5>\u00a0 2.\u7ebf\u7a0b ID \u83b7\u53d6\u63a5\u53e3<\/h5>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0pthread_self\u00a0<\/p>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0pthread_t pthread_self(void);<\/p>\n<p>\u529f\u80fd&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u83b7\u5f97\u8c03\u7528\u8be5\u51fd\u6570\u7684\u7ebf\u7a0b\u7684ID\u53f7<\/p>\n<h5>\u00a0 3.\u7ebf\u7a0b\u9000\u51fa\u63a5\u53e3<\/h5>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0pthread_exit<\/p>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0void pthread_exit(void *retval);<\/p>\n<p>\u529f\u80fd&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7ed3\u675f\u5f53\u524d\u7ebf\u7a0b\u4efb\u52a1<\/p>\n<p>\u53c2\u6570&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0retval:\u7ebf\u7a0b\u7ed3\u675f\u7684\u503c<\/p>\n<h5>4.\u56de\u6536\u7ebf\u7a0b\u63a5\u53e3<\/h5>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0pthread_join<\/p>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int pthread_join(pthread_t thread, void **retval);<\/p>\n<p>\u529f\u80fd&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u56de\u6536\u7ebf\u7a0b\u7a7a\u95f4<\/p>\n<p>\u53c2\u6570&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0thread:\u8981\u56de\u6536\u7684\u7ebf\u7a0b\u7684ID<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0retval:\u5b58\u653e\u7ebf\u7a0b\u7ed3\u675f\u72b6\u6001\u7a7a\u95f4\u7684\u9996\u5730\u5740<\/p>\n<p>\u8fd4\u56de\u503c: \u6210\u529f\u8fd4\u56de0 \u5931\u8d25\u8fd4\u56de\u9519\u8bef\u7801<\/p>\n<h4>6\u3001\u7ebf\u7a0b\u5c5e\u6027<\/h4>\n<h5>\u00a0 1.\u6982\u5ff5&#xff1a;<\/h5>\n<ul>\n<li>\u52a0\u5165\u5c5e\u6027&#xff1a;\u7ebf\u7a0b\u7ed3\u675f\u540e\u9700\u8981\u901a\u8fc7 pthread_join \u624b\u52a8\u56de\u6536\u7ebf\u7a0b\u7a7a\u95f4<\/li>\n<li>\u5206\u79bb\u5c5e\u6027&#xff1a;\u7ebf\u7a0b\u7ed3\u675f\u540e\u7a0b\u5e8f\u81ea\u52a8\u56de\u6536\u7ebf\u7a0b\u7a7a\u95f4<\/li>\n<\/ul>\n<h5>\u00a0 2.\u76f8\u5173\u51fd\u6570\u63a5\u53e3<\/h5>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u521d\u59cb\u5316\u51fd\u6570\u63a5\u53e3&#xff1a;pthread_attr_init<\/p>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int pthread_attr_init(pthread_attr_t *attr);<\/p>\n<p>\u529f\u80fd&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u7ebf\u7a0b\u5c5e\u6027\u521d\u59cb\u5316<\/p>\n<p>\u53c2\u6570&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 attr&#xff1a;\u521d\u59cb\u5316\u7ebf\u7a0b\u9996\u5730\u5740<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u5c5e\u6027\u8bbe\u7f6e\u63a5\u53e3&#xff1a;pthread_attr_setdetachstate<\/p>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate);<\/p>\n<p>\u529f\u80fd&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u8bbe\u7f6e\u7ebf\u7a0b\u5c5e\u6027<\/p>\n<p>\u53c2\u6570&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 attr &#xff1a;\u7ebf\u7a0b\u5c5e\u6027\u7a7a\u95f4\u9996\u5730\u5740<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 detachstate&#xff1a;\u5c5e\u6027\u8bbe\u7f6e<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0PTHREAD_CREATE_DETACHED&#xff1a;\u5206\u79bb\u5c5e\u6027<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0PTHREAD_CREATE_JOINABLE&#xff1a;\u52a0\u5165\u5c5e\u6027<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u9500\u6bc1\u7ebf\u7a0b\u5c5e\u6027\u5bf9\u8c61\u63a5\u53e3&#xff1a;pthread_attr_destroy<\/p>\n<p>\u539f\u578b&#xff1a;<\/p>\n<ul>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int pthread_attr_destroy(pthread_attr_t *attr);<\/li>\n<\/ul>\n<p>\u529f\u80fd&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u7ebf\u7a0b\u5c5e\u6027\u9500\u6bc1<\/p>\n<p>\u53c2\u6570&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 attr&#xff1a;\u7ebf\u7a0b\u5c5e\u6027\u7a7a\u95f4\u9996\u5730\u5740<\/p>\n<h4>7\u3001\u7ebf\u7a0b\u95f4\u901a\u4fe1<\/h4>\n<ul>\n<li>\u91c7\u7528\u5168\u5c40\u53d8\u91cf\u5b9e\u73b0\u8fdb\u7a0b\u95f4\u901a\u4fe1<\/li>\n<li>\u591a\u7ebf\u7a0b\u540c\u65f6\u64cd\u4f5c\u4f1a\u5f15\u53d1\u8d44\u6e90\u7ade\u4e89&#xff0c;\u9700\u52a0\u4e0a\u4e92\u65a5\u9501\u89e3\u51b3\u8d44\u6e90\u7ade\u4e89\u95ee\u9898<\/li>\n<\/ul>\n<h4>8\u3001\u4e92\u65a5\u9501<\/h4>\n<h5>\u00a0 1.\u6982\u5ff5\u4e0e\u7279\u70b9<\/h5>\n<ul>\n<li>\u89e3\u51b3\u8d44\u6e90\u7ade\u4e89\u7684\u4e00\u79cd\u65b9\u5f0f\u4e5f\u53ef\u4ee5\u770b\u6210\u662f\u4e00\u79cd\u8d44\u6e90<\/li>\n<li>\u53ea\u80fd\u52a0\u9501\u4e00\u6b21&#xff0c;\u5728\u52a0\u9501\u671f\u95f4\u4e0d\u80fd\u518d\u6b21\u52a0\u9501&#xff0c;\u4e5f\u4e0d\u80fd\u7f8c\u4e4b\u6218\u6709\u4e00\u4e2a\u52a0\u9501\u7684\u8d44\u6e90&#xff0c;\u5fc5\u987b\u7b49\u5f85\u8d44\u6e90\u91ca\u653e&#xff08;\u89e3\u9501\u540e\u64cd\u4f5c&#xff09;<\/li>\n<li>\u53ea\u80fd\u9632\u6b62\u7ebf\u7a0b\u4e4b\u95f4\u7684\u8d44\u6e90\u7ade\u4e89&#xff0c;\u4e0d\u80fd\u6539\u53d8\u4ee3\u7801\u7684\u5148\u540e\u6267\u884c\u987a\u5e8f<\/li>\n<\/ul>\n<h5>\u00a0 2.\u4f7f\u7528\u65b9\u5f0f<\/h5>\n<ul>\n<li>\u5b9a\u4e49\u4e92\u65a5\u9501&#xff08;\u5168\u5c40\u53d8\u91cf&#xff09;\u5e76\u5bf9\u9501\u521d\u59cb\u5316<\/li>\n<li>\u64cd\u4f5c\u5168\u5c40\u8d44\u6e90\u524d\u5148\u52a0\u9501&#xff0c;\u5982\u679c\u52a0\u9501\u6210\u529f\u5219\u5b8c\u6210\u5bf9\u5168\u5c40\u8d44\u6e90\u64cd\u4f5c<\/li>\n<li>\u5982\u679c\u52a0\u9501\u5931\u8d25\u5219\u8868\u793a\u6709\u4eba\u5360\u7528\u8d44\u6e90&#xff0c;\u5fc5\u987b\u7b49\u5f85\u5176\u4f59\u4eba\u91ca\u653e\u9501\u8d44\u6e90\u624d\u80fd\u52a0\u9501\u6210\u529f<\/li>\n<\/ul>\n<h5>\u00a0 3.\u76f8\u5173\u51fd\u6570\u63a5\u53e3<\/h5>\n<h6>\u00a0 \u00a0 \u00a0 \u00a0 \u4e92\u65a5\u9501\u521d\u59cb\u5316\u51fd\u6570<\/h6>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0pthread_mutex_init<\/p>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int pthread_mutex_init(pthread_mutex_t *restrict mutex, const pthread_mutexattr_t *restrict attr);<\/p>\n<p>\u529f\u80fd&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u521d\u59cb\u5316\u4e92\u65a5\u9501<\/p>\n<p>\u53c2\u6570&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mutex&#xff1a;\u4e92\u65a5\u9501\u7a7a\u95f4\u9996\u5730\u5740<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0attr&#xff1a;\u4e92\u65a5\u9501\u5c5e\u6027&#xff0c;\u9ed8\u8ba4\u4e3a NULL<\/p>\n<p>\u8fd4\u56de\u503c&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u6210\u529f0&#xff0c;\u5931\u8d25-1<\/p>\n<h6>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u4e92\u65a5\u9501\u52a0\u9501\u4e0e\u5f00\u9501\u4e0e\u9500\u6bc1<\/h6>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0pthread_mutex_lock\u00a0 \/\u00a0 \u00a0pthread_mutex_unlock\u00a0 \/pthread_mutex_destroy<\/p>\n<p>\u52a0\u9501\u51fd\u6570&#xff1a;<\/p>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int pthread_mutex_lock(pthread_mutex_t *mutex);<\/p>\n<p>\u5f00\u9501\u51fd\u6570&#xff1a;<\/p>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int pthread_mutex_unlock(pthread_mutex_t *mutex);<\/p>\n<p>\u9500\u6bc1\u51fd\u6570&#xff1a;<\/p>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int pthread_mutex_destroy(pthread_mutex_t *mutex);<\/p>\n<h4>\u00a0 9\u3001\u6b7b\u9501<\/h4>\n<h5>\u00a0 1.\u6982\u5ff5<\/h5>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e24\u4e2a\u6216\u4e24\u4e2a\u4ee5\u4e0a\u7684\u7ebf\u7a0b&#xff08;\u6216\u8fdb\u7a0b&#xff09;\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d&#xff0c;\u7531\u4e8e\u7ade\u4e89\u8d44\u6e90\u6216\u5f7c\u6b64\u901a\u4fe1\u800c\u9020\u6210\u7684\u4e00\u79cd\u4e92\u76f8\u7b49\u5f85\u7684\u73b0\u8c61<\/p>\n<h5>\u00a0 2.\u6b7b\u9501\u7684\u7279\u70b9<\/h5>\n<ul>\n<li>\u6ca1\u6709\u5916\u90e8\u5e72\u9884\u65f6&#xff0c;\u8fd9\u79cd\u7b49\u5f85\u72b6\u6001\u5c06\u6c38\u4e45\u6301\u7eed<\/li>\n<li>\u6bcf\u4e2a\u7ebf\u7a0b\/\u8fdb\u7a0b\u90fd\u5728\u7b49\u5f85\u5176\u4ed6\u7ebf\u7a0b\/\u8fdb\u7a0b\u91ca\u653e\u8d44\u6e90<\/li>\n<\/ul>\n<h5>\u00a0 3.\u6b7b\u9501\u7684\u4ea7\u751f\u6761\u4ef6<\/h5>\n<ul>\n<li>\u4e92\u65a5\u6761\u4ef6&#xff1a;\u8d44\u6e90\u4e00\u6b21\u53ea\u80fd\u88ab\u4e00\u4e2a\u7ebf\u7a0b\u5360\u7528&#xff08;\u82e5\u8d44\u6e90\u53ef\u4ee5\u88ab\u5171\u4eab\u8bbf\u95ee&#xff0c;\u5219\u4e0d\u4f1a\u4ea7\u751f\u6b7b\u9501&#xff09;<\/li>\n<li>\u5360\u6709\u5e76\u7b49\u5f85&#xff1a;\u7ebf\u7a0b\u81f3\u5c11\u5360\u6709\u4e00\u4e2a\u8d44\u6e90\u7684\u540c\u65f6\u53c8\u7b49\u5f85\u83b7\u53d6\u5176\u4ed6\u7ebf\u7a0b\u7684\u8d44\u6e90<\/li>\n<li>\u4e0d\u53ef\u5265\u593a&#xff1a;\u5df2\u7ecf\u5206\u914d\u7ed9\u73b0\u6210\u7684\u8d44\u6e90\u4e0d\u80fd\u88ab\u5176\u4ed6\u7ebf\u7a0b\u5f3a\u884c\u593a\u53d6<\/li>\n<li>\u5faa\u73af\u7b49\u5f85&#xff1a;\u5b58\u5728\u4e00\u4e2a\u7ebf\u7a0b\u7b49\u5f85\u73af\u8def<\/li>\n<\/ul>\n<h4>10\u3001\u4fe1\u53f7\u91cf<\/h4>\n<h5>\u00a0 1.\u6982\u5ff5<\/h5>\n<ul>\n<li>\u4fe1\u53f7\u91cf\u662f\u4e00\u79cd\u7528\u4e8e\u591a\u7ebf\u7a0b\/\u591a\u8fdb\u7a0b\u73af\u5883\u4e0b\u63a7\u5236\u5171\u4eab\u8d44\u6e90\u8bbf\u95ee\u7684\u540c\u6b65\u673a\u5236<\/li>\n<li>\u4fe1\u53f7\u91cf\u53ea\u80fd\u5b8c\u6210\u521d\u59cb\u5316\u3001\u9500\u6bc1\u3001\u7533\u8bf7\u3001\u91ca\u653e\u56db\u79cd\u64cd\u4f5c<\/li>\n<\/ul>\n<h5>\u00a0 2.\u51fd\u6570\u63a5\u53e3<\/h5>\n<h6>\u00a0 \u00a0 \u00a0 \u00a0 \u521d\u59cb\u5316\u51fd\u6570&#xff1a;sem_init<\/h6>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int sem_init(sem_t *sem, int pshared, unsigned int value);<\/p>\n<p>\u529f\u80fd&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u521d\u59cb\u5316\u4fe1\u53f7\u91cf<\/p>\n<p>\u53c2\u6570&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 sem&#xff1a;\u4fe1\u53f7\u7a7a\u95f4\u9996\u5730\u5740<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 pshared&#xff1a;\u8fdb\u7a0b\u5171\u4eab\u5f00\u5173<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 0&#xff1a;\u4e00\u4e2a\u8fdb\u7a0b\u95f4\u7684\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u975e0&#xff1a;\u591a\u4e2a\u8fdb\u7a0b\u95f4\u5171\u4eab<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 value&#xff1a;\u521d\u59cb\u5316\u8d44\u6e90\u7684\u503c<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u5982\u54e6\u8d44\u6e90\u804c\u4f4d0&#xff0c;\u7533\u8bf7\u8d44\u6e90\u4f1a\u963b\u585e\u7b49\u5f85&#xff0c;\u76f4\u5230\u5360\u7528\u8d44\u6e90\u7684\u4efb\u52a1\u91ca\u653e\u8d44\u6e90&#xff0c;\u8d44\u6e90\u90e8\u4e3a\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 0 \u624d\u80fd\u7533\u8bf7\u5230\u8d44\u6e90\u5e76\u5411\u4e0b\u6267\u884c<\/p>\n<p>\u8fd4\u56de\u503c&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u6210\u529f 0&#xff0c;\u5931\u8d25 -1\u00a0<\/p>\n<h6>\u00a0 \u00a0 \u00a0 \u00a0 \u9500\u6bc1\u4fe1\u53f7\u91cf\u51fd\u6570&#xff1a;sem_destroy<\/h6>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 int sem_destroy(sem_t *sem);<\/p>\n<p>\u529f\u80fd&#xff1a;<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u9500\u6bc1\u4fe1\u53f7\u91cf<\/p>\n<p>\u8fd4\u56de\u503c:<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0 \u6210\u529f 0&#xff0c;\u5931\u8d25 -1<\/p>\n<h6>\u00a0 \u00a0 \u00a0 \u00a0 \u4fe1\u53f7\u91cf\u7533\u8bf7\u51fd\u6570&#xff1a;sem_wait<\/h6>\n<ul>\n<li>\u7533\u8bf7\u4fe1\u53f7\u91cf\u4f1a\u8ba9\u4fe1\u53f7\u91cf\u8d44\u6e90\u6570 -1<\/li>\n<li>\u82e5\u4fe1\u53f7\u91cf\u8d44\u6e90\u6570\u4e3a 0&#xff0c;\u4f1a\u963b\u585e\u7b49\u5f85\u76f4\u5230\u6709\u4efb\u52a1\u91ca\u653e\u8d44\u6e90<\/li>\n<\/ul>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int sem_wait(sem_t *sem);<\/p>\n<p>\u529f\u80fd&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7533\u8bf7\u4fe1\u53f7\u91cf<\/p>\n<p>\u53c2\u6570&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sem:\u4fe1\u53f7\u91cf\u7a7a\u95f4\u9996\u5730\u5740<\/p>\n<p>\u8fd4\u56de\u503c:<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6210\u529f\u8fd4\u56de0 \u5931\u8d25\u8fd4\u56de-1<\/p>\n<h6>\u00a0 \u00a0 \u00a0 \u00a0 \u4fe1\u53f7\u91cf\u91ca\u653e\u51fd\u6570&#xff1a;sem_post<\/h6>\n<ul>\n<li>\u4fe1\u53f7\u91cf\u91ca\u653e\u540e \u4fe1\u53f7\u91cf\u8d44\u6e90 &#043;1<\/li>\n<\/ul>\n<p>\u539f\u578b&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int sem_post(sem_t *sem);<\/p>\n<p>\u529f\u80fd&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u91ca\u653e\u4fe1\u53f7\u91cf<\/p>\n<p>\u53c2\u6570&#xff1a;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sem:\u4fe1\u53f7\u91cf\u7a7a\u95f4\u9996\u5730\u5740<\/p>\n<p>\u8fd4\u56de\u503c:<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6210\u529f\u8fd4\u56de0 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