{"id":75714,"date":"2026-02-13T00:05:31","date_gmt":"2026-02-12T16:05:31","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/75714.html"},"modified":"2026-02-13T00:05:31","modified_gmt":"2026-02-12T16:05:31","slug":"%e3%80%90linux%e3%80%91%e7%ba%bf%e7%a8%8b%e5%88%9d%e6%ad%a5-%e7%ba%bf%e7%a8%8b%e6%a6%82%e5%bf%b5%e4%bb%a5%e5%8f%8a%e6%8e%a5%e5%8f%a3%e8%ae%a4%e8%af%86","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/75714.html","title":{"rendered":"\u3010Linux\u3011\u7ebf\u7a0b\u521d\u6b65\u2014\u2014\u7ebf\u7a0b\u6982\u5ff5\u4ee5\u53ca\u63a5\u53e3\u8ba4\u8bc6"},"content":{"rendered":"

\u4e00\u3001\u7ebf\u7a0b\u6982\u5ff5\u7406\u89e3<\/h2>\n

1.\u4f55\u4e3a\u7ebf\u7a0b\u2014\u2014\u7ebf\u7a0b\u4e0e\u8fdb\u7a0b\u7684\u533a\u522b<\/h3>\n

\u8fdb\u7a0b\u7b80\u5355\u8bf4\u5c31\u662f\u4e00\u4e2a\u7a0b\u5e8f\u7684\u6267\u884c\u8fc7\u7a0b，\u6709\u4e86\u8fd9\u4e2a\u6982\u5ff5，\u5c31\u53ef\u4ee5\u8986\u76d6\u7cfb\u7edf\u7f16\u7a0b\u7684\u5927\u90e8\u5206\u60c5\u666f\u4e86，\u90a3\u4e48\u7ebf\u7a0b\u7684\u51fa\u73b0\u53c8\u6709\u4ec0\u4e48\u610f\u4e49\u5462？\u5176\u5b9e\u7a0b\u5e8f\u7684\u4e00\u6bb5\u6267\u884c\u8fc7\u7a0b\u786e\u5b9e\u53ef\u4ee5\u53eb\u505a\u8fdb\u7a0b，\u4f46\u662f\u771f\u6b63\u7684\u6267\u884c\u5bf9\u8c61\u5e76\u4e0d\u662f\u8fdb\u7a0b，\u800c\u662f\u7ebf\u7a0b（\u8f7b\u91cf\u5316\u7684\u6267\u884c\u5355\u5143）<\/span>\u3002\u5927\u4f53\u6765\u8bf4，\u8fdb\u7a0b\u76f8\u5f53\u4e8e\u8d44\u6e90\u5206\u914d\u7684\u57fa\u672c\u5355\u4f4d，\u800c\u7ebf\u7a0b\u662f\u8c03\u5ea6\u7684\u57fa\u672c\u5355\u4f4d，\u4e00\u4e2a\u8fdb\u7a0b\u62e5\u6709\u865a\u62df\u5730\u5740\u7a7a\u95f4\u3001\u4fe1\u53f7\u8d44\u6e90\u3001\u6587\u4ef6\u63cf\u8ff0\u7b26\u8868\u7b49\u7b49\u8d44\u6e90，\u7ebf\u7a0b\u53ea\u662f\u8fdb\u7a0b\u4e00\u90e8\u5206，\u662f\u8fdb\u7a0b\u771f\u6b63\u7684<\/span>\u6267\u884c\u6d41<\/span>\u3002\u5bf9\u4e8eCPU\u800c\u8a00，\u5b83\u5e76\u4e0d\u8ba4\u8bc6\u8fdb\u7a0b，\u5b83\u53ea\u8ba4\u6267\u884c\u6d41，\u6bcf\u4e2a\u7ebf\u7a0b\u88ab\u521b\u5efa\u540e\u53ef\u4ee5\u6267\u884c\u6307\u5b9a\u4ee3\u7801\u7247\u6bb5，<\/span>\u8fd9\u6837\u4e00\u6765，\u4e00\u4e2a\u8fdb\u7a0b\u5c31\u53ef\u4ee5\u88ab\u62c6\u5206\u4e3a\u591a\u4e2a\u6267\u884c\u6d41，\u65e2\u80fd\u5e76\u53d1\u5904\u7406\u4efb\u52a1，\u53c8\u80fd\u5927\u5e45\u964d\u4f4e\u4e0a\u4e0b\u6587\u5207\u6362\u7684\u5f00\u9500，\u4ece\u800c\u63d0\u5347\u6574\u4f53\u8fd0\u884c\u6548\u7387\u3002\u8fdb\u7a0b\u548c\u7ebf\u7a0b\u7684\u5bf9\u5e94\u5173\u7cfb\u662f1：n，\u5728\u4e4b\u524d\u6240\u8c13\u7684\u8fdb\u7a0b\u5176\u5b9e\u5927\u90e8\u5206\u6307\u7684\u662f\u5355\u7ebf\u7a0b\u8fdb\u7a0b\u3002<\/span><\/p>\n

\u8054\u7cfb\u524d\u7f6e\u77e5\u8bc6：\u6240\u8c13\u7684\u8fdb\u7a0b\u5207\u6362（\u65f6\u95f4\u7247）\u3001\u8c03\u5ea6\u7b97\u6cd5\u3001\u8c03\u5ea6\u961f\u5217\u7b49，\u5b9e\u8d28\u90fd\u662f\u5bf9\u7ebf\u7a0b\u800c\u8a00\u800c\u4e0d\u662f\u8fdb\u7a0b\u3002<\/span><\/p>\n

2.\u7ebf\u7a0b\u7684\u7279\u70b9<\/h3>\n

2.1\u5171\u4eab\u8fdb\u7a0b\u8d44\u6e90<\/h4>\n

\u7ebf\u7a0b\u4f5c\u4e3a\u8fdb\u7a0b\u7684\u4e00\u90e8\u5206，\u5171\u4eab\u4e86\u6574\u4e2a\u8fdb\u7a0b\u7684\u865a\u62df\u5730\u5740\u7a7a\u95f4\u3002\u4fe1\u53f7\u5904\u7406\u65b9\u6cd5\u7b49\u8d44\u6e90，\u8fd9\u6837\u7684\u8bbe\u8ba1\u5927\u5927\u964d\u4f4e\u4e86\u7ebf\u7a0b\u5207\u6362\u65f6\u7684\u5f00\u9500（\u65e0\u9700\u8fdb\u884c\u5927\u91cf\u8d44\u6e90\u8f7d\u5165），\u8fd9\u4e5f\u662f\u7ebf\u7a0b\u7684\u6838\u5fc3\u8bbe\u8ba1\u7279\u8272\u3002<\/p>\n

2.2\u6709\u72ec\u7acb\u7684\u6267\u884c\u4e0a\u4e0b\u6587\u4e0e\u6808\u7a7a\u95f4<\/h4>\n

\u4f5c\u4e3a\u8fdb\u7a0b\u771f\u6b63\u7684\u6267\u884c\u6d41，\u7ebf\u7a0b\u7684\u6267\u884c\u9075\u5faa\u8c03\u5ea6\u961f\u5217\u3001\u65f6\u95f4\u7247\u8f6e\u5207\u7b49\u539f\u5219，\u56e0\u6b64\u9700\u8981\u901a\u8fc7\u4e0a\u4e0b\u6587\u7684\u4fdd\u5b58\u8fdb\u884c\u7ebf\u7a0b\u4e4b\u95f4\u7684\u8f6e\u5207，\u540c\u65f6\u4e5f\u5c31\u610f\u5473\u7740\u7ebf\u7a0b\u5177\u6709\u72ec\u7acb\u7684PCB\u7ed3\u6784\u4f53\u8fdb\u884c\u6267\u884c\u4e0a\u4e0b\u6587\u4fdd\u5b58\u3002\u6808\u79c1\u6709\u662f\u7ebf\u7a0b\u72ec\u7acb\u6267\u884c\u51fd\u6570\u8c03\u7528\u7684\u57fa\u7840\u3002<\/p>\n

2.3\u540c\u8fdb\u7a0b\u5185\u7ebf\u7a0b\u5bb9\u6613\u901a\u4fe1<\/h4>\n

\u7531\u4e8e\u540c\u8fdb\u7a0b\u5185\u7ebf\u7a0b\u5177\u6709\u5171\u4eab\u8fdb\u7a0b\u8d44\u6e90\u7684\u7279\u6027，\u4e5f\u5c31\u610f\u5473\u7740\u7ebf\u7a0b\u95f4\u4e0d\u5b58\u5728\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u6700\u5927\u95ee\u9898：\u770b\u5230\u540c\u4e00\u4efd\u8d44\u6e90，\u56e0\u6b64\u7ebf\u7a0b\u95f4\u5f88\u5bb9\u6613\u5b9e\u73b0\u901a\u4fe1\u3002<\/p>\n

2.4\u4e00\u4e2a\u7ebf\u7a0b\u5d29\u6e83，\u5168\u90e8\u5d29\u6e83<\/h4>\n

\u5f53\u67d0\u4e00\u4e2a\u7ebf\u7a0b\u53d1\u751f\u5f02\u5e38\u7684\u65f6\u5019，\u4f1a\u89e6\u53d1\u786c\u4ef6\u5411\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7\u5bfc\u81f4\u8fdb\u7a0b\u4e2d\u65ad\u9000\u51fa，\u8fdb\u7a0b\u9000\u51fa\u4e5f\u5c31\u610f\u5473\u7740\u7ebf\u7a0b\u5168\u90e8\u9000\u51fa，\u5bfc\u81f4\u6240\u6709\u7ebf\u7a0b\u5d29\u6e83\u3002<\/p>\n

3.\u7ebf\u7a0b\u4f18\u7f3a\u70b9<\/h3>\n

\u4f18\u70b9<\/h4>\n

\u2022 <\/span>\u521b\u5efa\u2f00\u4e2a\u65b0\u7ebf\u7a0b\u7684\u4ee3\u4ef7\u8981\u2f50\u521b\u5efa\u2f00\u4e2a\u65b0\u8fdb\u7a0b\u2f29\u5f97\u591a <\/span><\/p>\n

\u2022 <\/span>\u4e0e\u8fdb\u7a0b\u4e4b\u95f4\u7684\u5207\u6362\u76f8\u2f50，\u7ebf\u7a0b\u4e4b\u95f4\u7684\u5207\u6362\u9700\u8981\u64cd\u4f5c\u7cfb\u7edf\u505a\u7684\u2f2f\u4f5c\u8981\u5c11\u5f88\u591a <\/span><\/p>\n

\u25e6 <\/span>\u6700\u4e3b\u8981\u7684\u533a\u522b\u662f\u7ebf\u7a0b\u7684\u5207\u6362\u865a\u62df\u5185\u5b58\u7a7a\u95f4\u4f9d\u7136\u662f\u76f8\u540c\u7684，\u4f46\u662f\u8fdb\u7a0b\u5207\u6362\u662f\u4e0d\u540c\u7684\u3002\u8fd9\u4e24\u79cd\u4e0a <\/span><\/p>\n

\u4e0b\u2f42\u5207\u6362\u7684\u5904\u7406\u90fd\u662f\u901a\u8fc7\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u6765\u5b8c\u6210\u7684\u3002\u5185\u6838\u7684\u8fd9\u79cd\u5207\u6362\u8fc7\u7a0b\u4f34\u968f\u7684\u6700\u663e\u8457\u7684\u6027\u80fd <\/span><\/p>\n

\u635f\u8017\u662f\u5c06\u5bc4\u5b58\u5668\u4e2d\u7684\u5185\u5bb9\u5207\u6362\u51fa\u3002 <\/span><\/p>\n

\u25e6 <\/span>\u53e6\u5916\u2f00\u4e2a\u9690\u85cf\u7684\u635f\u8017\u662f\u4e0a\u4e0b\u2f42\u7684\u5207\u6362\u4f1a\u6270\u4e71\u5904\u7406\u5668\u7684\u7f13\u5b58\u673a\u5236\u3002\u7b80\u5355\u7684\u8bf4，\u2f00\u65e6\u53bb\u5207\u6362\u4e0a\u4e0b <\/span><\/p>\n

\u2f42，\u5904\u7406\u5668\u4e2d\u6240\u6709\u5df2\u7ecf\u7f13\u5b58\u7684\u5185\u5b58\u5730\u5740\u2f00\u77ac\u95f4\u90fd\u4f5c\u5e9f\u4e86\u3002\u8fd8\u6709\u2f00\u4e2a\u663e\u8457\u7684\u533a\u522b\u662f\u5f53\u4f60\u6539\u53d8\u865a <\/span><\/p>\n

\u62df\u5185\u5b58\u7a7a\u95f4\u7684\u65f6\u5019，\u5904\u7406\u7684\u2eda\u8868\u7f13\u51b2 <\/span>TLB <\/span>（\u5feb\u8868）\u4f1a\u88ab\u5168\u90e8\u5237\u65b0，\u8fd9\u5c06\u5bfc\u81f4\u5185\u5b58\u7684\u8bbf\u95ee\u5728\u2f00 <\/span><\/p>\n

\u6bb5\u65f6\u95f4\u5185\u76f8\u5f53\u7684\u4f4e\u6548\u3002\u4f46\u662f\u5728\u7ebf\u7a0b\u7684\u5207\u6362\u4e2d，\u4e0d\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u95ee\u9898，\u5f53\u7136\u8fd8\u6709\u786c\u4ef6cache\u3002 <\/span><\/p>\n

\u2022 <\/span>\u7ebf\u7a0b\u5360\u2f64\u7684\u8d44\u6e90\u8981\u2f50\u8fdb\u7a0b\u5c11 <\/span><\/p>\n

\u2022 <\/span>\u80fd\u5145\u5206\u5229\u2f64\u591a\u5904\u7406\u5668\u7684\u53ef\u5e76\u2f8f\u6570\u91cf <\/span><\/p>\n

\u2022 <\/span>\u5728\u7b49\u5f85\u6162\u901fI\/O\u64cd\u4f5c\u7ed3\u675f\u7684\u540c\u65f6，\u7a0b\u5e8f\u53ef\u6267\u2f8f\u5176\u4ed6\u7684\u8ba1\u7b97\u4efb\u52a1<\/span><\/p>\n

\u2022 <\/span>\u8ba1\u7b97\u5bc6\u96c6\u578b\u5e94\u2f64，\u4e3a\u4e86\u80fd\u5728\u591a\u5904\u7406\u5668\u7cfb\u7edf\u4e0a\u8fd0\u2f8f，\u5c06\u8ba1\u7b97\u5206\u89e3\u5230\u591a\u4e2a\u7ebf\u7a0b\u4e2d\u5b9e\u73b0 <\/span><\/p>\n

\u2022 <\/span>I\/O\u5bc6\u96c6\u578b\u5e94\u2f64，\u4e3a\u4e86\u63d0\u2fbc\u6027\u80fd，\u5c06I\/O\u64cd\u4f5c\u91cd\u53e0\u3002\u7ebf\u7a0b\u53ef\u4ee5\u540c\u65f6\u7b49\u5f85\u4e0d\u540c\u7684I\/O\u64cd\u4f5c\u3002<\/span><\/p>\n

\u7f3a\u70b9<\/h4>\n

\u2022 <\/span>\u8fc7\u591a\u7ebf\u7a0b\u521b\u5efa\u53ef\u80fd\u5bfc\u81f4\u9891\u7e41\u7ebf\u7a0b\u8f6e\u5207，\u53cd\u800c\u964d\u4f4e\u6548\u7387\u3002<\/span><\/p>\n

\u25e6 <\/span>\u2f00\u4e2a\u5f88\u5c11\u88ab\u5916\u90e8\u4e8b\u4ef6\u963b\u585e\u7684\u8ba1\u7b97\u5bc6\u96c6\u578b\u7ebf\u7a0b\u5f80\u5f80\u2f46\u6cd5\u4e0e\u5176\u5b83\u7ebf\u7a0b\u5171\u4eab\u540c\u2f00\u4e2a\u5904\u7406\u5668\u3002\u5982\u679c\u8ba1 <\/span><\/p>\n

\u7b97\u5bc6\u96c6\u578b\u7ebf\u7a0b\u7684\u6570\u91cf\u2f50\u53ef\u2f64\u7684\u5904\u7406\u5668\u591a，\u90a3\u4e48\u53ef\u80fd\u4f1a\u6709\u8f83\u2f24\u7684\u6027\u80fd\u635f\u5931，\u8fd9\u2fa5\u7684\u6027\u80fd\u635f\u5931\u6307 <\/span><\/p>\n

\u7684\u662f\u589e\u52a0\u4e86\u989d\u5916\u7684\u540c\u6b65\u548c\u8c03\u5ea6\u5f00\u9500，\u2f7d\u53ef\u2f64\u7684\u8d44\u6e90\u4e0d\u53d8\u3002 <\/span><\/p>\n

\u2022<\/span> <\/span>\u7531\u4e8e\u7ebf\u7a0b\u95f4\u5171\u4eab\u865a\u62df\u7a7a\u95f4<\/span>，<\/span>\u5065\u58ee\u6027\u964d\u4f4e <\/span><\/p>\n

\u25e6 <\/span>\u7f16\u5199\u591a\u7ebf\u7a0b\u9700\u8981\u66f4\u5168\u2faf\u66f4\u6df1\u2f0a\u7684\u8003\u8651，\u5728\u2f00\u4e2a\u591a\u7ebf\u7a0b\u7a0b\u5e8f\u2fa5，\u56e0\u65f6\u95f4\u5206\u914d\u4e0a\u7684\u7ec6\u5fae\u504f\u5dee\u6216\u8005 <\/span><\/p>\n

\u56e0\u5171\u4eab\u4e86\u4e0d\u8be5\u5171\u4eab\u7684\u53d8\u91cf\u2f7d\u9020\u6210\u4e0d\u826f\u5f71\u54cd\u7684\u53ef\u80fd\u6027\u662f\u5f88\u2f24\u7684，\u6362\u53e5\u8bdd\u8bf4\u7ebf\u7a0b\u4e4b\u95f4\u662f\u7f3a\u4e4f\u4fdd\u62a4 <\/span><\/p>\n

\u7684\u3002 <\/span><\/p>\n

\u2022 <\/span>\u7f3a\u4e4f\u8bbf\u95ee\u63a7\u5236 <\/span><\/p>\n

\u25e6 <\/span>\u8fdb\u7a0b\u662f\u8bbf\u95ee\u63a7\u5236\u7684\u57fa\u672c\u7c92\u5ea6，\u5728\u2f00\u4e2a\u7ebf\u7a0b\u4e2d\u8c03\u2f64\u67d0\u4e9bOS\u51fd\u6570\u4f1a\u5bf9\u6574\u4e2a\u8fdb\u7a0b\u9020\u6210\u5f71\u54cd\u3002 <\/span><\/p>\n

\u2022 <\/span>\u7f16\u7a0b\u96be\u5ea6\u63d0\u2fbc <\/span><\/p>\n

\u25e6 <\/span>\u7f16\u5199\u4e0e\u8c03\u8bd5\u2f00\u4e2a\u591a\u7ebf\u7a0b\u7a0b\u5e8f\u2f50\u5355\u7ebf\u7a0b\u7a0b\u5e8f\u56f0\u96be\u5f97\u591a<\/span><\/p>\n

\u4e8c\u3001\u76f8\u5173\u63a5\u53e3\u53ca\u57fa\u7840\u7528\u6cd5<\/h2>\n

pthread_creat<\/h2>\n

\"\"<\/p>\n

\u529f\u80fd：\u521b\u5efa\u2f00\u4e2a\u65b0\u7684\u7ebf\u7a0b <\/span><\/p>\n

\u539f\u578b： <\/span>int <\/span>pthread_create<\/span>(<\/span>pthread_t <\/span>*thread, <\/span>const pthread_attr_t <\/span>*attr, <\/span>void <\/span>* (*start_routine)(<\/span>void<\/span>*), <\/span>void <\/span>*arg); <\/span><\/p>\n

\u53c2\u6570<\/span>: <\/span><\/p>\n

thread:<\/span>\u8fd4\u56de\u7ebf\u7a0b<\/span>ID <\/span><\/p>\n

attr:<\/span>\u8bbe\u7f6e\u7ebf\u7a0b\u7684\u5c5e\u6027，<\/span>attr<\/span>\u4e3a<\/span>NULL<\/span>\u8868\u2f70\u4f7f\u2f64\u9ed8\u8ba4\u5c5e\u6027 <\/span><\/p>\n

start_routine:<\/span>\u662f\u4e2a\u51fd\u6570\u5730\u5740，\u7ebf\u7a0b\u542f\u52a8\u540e\u8981\u6267\u2f8f\u7684\u51fd\u6570 <\/span><\/p>\n

arg:<\/span>\u4f20\u7ed9\u7ebf\u7a0b\u542f\u52a8\u51fd\u6570\u7684\u53c2\u6570 <\/span><\/p>\n

\u8fd4\u56de\u503c：\u6210\u529f\u8fd4\u56de<\/span>0<\/span>；\u5931\u8d25\u8fd4\u56de\u9519\u8bef\u7801<\/span><\/p>\n

\u4ee3\u7801\u793a\u8303<\/span><\/p>\n

#include<pthread.h>
\n#include<iostream>
\n#include<unistd.h>
\n#include<string>
\nvoid *handler(void *th){
\n std::string name=static_cast<const char *>(th);
\n while(true){
\n sleep(1);
\n std::cout<<"I'm "<<name<<std::endl;
\n }
\n}<\/p>\n

int main(){
\n pthread_t thread;
\n pthread_create(&thread,NULL,handler,(void*)"thread -1");
\n while(true){
\n std::cout<<"I'm main thread"<<std::endl;
\n sleep(1);
\n }
\n} <\/p>\n

\"\"<\/p>\n

\u4ee3\u7801\u8fdb\u884c\u7f16\u8bd1\u8fd0\u884c\u540e\u53ef\u4ee5\u770b\u5230\u547d\u4ee4\u884c\u6309\u7167\u9884\u671f\u8fdb\u884c\u4e86\u8f93\u51fa，\u540c\u65f6\u8fdb\u884c\u8fdb\u7a0b\u8d44\u6e90\u8c03\u53d6\u53ef\u4ee5\u770b\u5230\u53ea\u6709\u4e00\u4e2a\u8fdb\u7a0b\u8fd0\u884c，\u90a3\u4e48\u5982\u4f55\u8fdb\u884c\u7ebf\u7a0b\u4fe1\u606f\u67e5\u770b\u5462？<\/p>\n

ps -aL<\/p>\n

\"\"<\/p>\n

\u518d\u6b21\u8fd0\u884c\u4e0a\u6b21\u7684\u8fdb\u7a0b\u540e\u8f93\u5165\u8be5\u6307\u4ee4\u5c31\u53ef\u4ee5\u770b\u5230\u76ee\u6807\u8fdb\u7a0b\u4e0b\u51fa\u73b0\u4e86\u4e24\u4e2aLWP\u4e0d\u540c\u7684\u7ebf\u7a0b\u3002<\/p>\n

\u8865\u5145：LWP\u2014\u2014\u7ebf\u7a0b\u7684\u5185\u6838\u5c42\u5b9e\u73b0\u8f7d\u4f53<\/h4>\n

LWP\u662f\u6307\u8f7b\u91cf\u5316\u8fdb\u7a0b，\u662f\u7ebf\u7a0b\u7684\u5185\u6838\u5c42\u5b9e\u73b0\u8f7d\u4f53\u3002\u5176\u5b9e\u5728Linux\u4e2d\u5e76\u4e0d\u5b58\u5728\u6240\u8c13\u7ebf\u7a0b，\u7ebf\u7a0b\u4e25\u683c\u610f\u4e49\u4e0a\u662f\u5c5e\u4e8e\u8fdb\u7a0b\u7684\u5b50\u5355\u5143，\u65e0\u72ec\u7acb\u7684\u5185\u6838\u6570\u636e\u7ed3\u6784，\u5b8c\u5168\u4f9d\u8d56\u8fdb\u7a0b\u7684\u8d44\u6e90\u5bb9\u5668，\u81ea\u8eab\u4ec5\u4fdd\u5b58\u6267\u884c\u4e0a\u4e0b\u6587\u3002Linux \u7684 LWP \u6709\u72ec\u7acb\u7684 task_struct（\u548c\u8fdb\u7a0b\u540c\u7b49\u5730\u4f4d），\u5185\u6838\u8c03\u5ea6\u65f6\u5b8c\u5168\u628a\u5b83\u5f53\u6210\u300c\u72ec\u7acb\u5355\u5143\u300d\u5bf9\u5f85 \u2014\u2014 \u53ea\u662f\u5b83\u548c\u5176\u4ed6 LWP \u5171\u4eab\u8d44\u6e90\u800c\u5df2\u3002Linux\u8bbe\u8ba1\u4e4b\u521d\u5c31\u7b80\u5316\u4e86\u7ebf\u7a0b\u4e0e\u8fdb\u7a0b\u4e4b\u95f4\u7684\u5dee\u5f02，\u91c7\u7528\u7edf\u4e00\u7ba1\u7406\u7684\u65b9\u5f0f\u3002\u56e0\u6b64Linux\u4e2d\u4e0d\u5b58\u5728\u6240\u8c13\u7ebf\u7a0b，\u800c\u662fLWP（\u8f7b\u91cf\u5316\u8fdb\u7a0b），\u5728\u5185\u6838\u5c42\u5c31\u53eb\u505aLWP，\u800c\u5728\u7528\u6237\u5c42\u901a\u8fc7\u5c01\u88c5\u62bd\u8c61\u6210\u4e86\u7ebf\u7a0b\u3002\u5e76\u4e14\u6bcf\u4e2a\u7ebf\u7a0b\u6709\u81ea\u5df1\u72ec\u7279\u7684LWP\u6807\u8bc6\u7b26，\u56fe\u4e2d\u6240\u793a\u5c31\u662fLWP\u6807\u8bc6\u7b26\u3002<\/p>\n

pthread_self\u2014\u2014\u7ebf\u7a0bID\u83b7\u53d6<\/h4>\n

\"\"<\/p>\n

\u5728\u8fdb\u7a0b\u5185\u90e8，glibc\u540c\u65f6\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u7ebf\u7a0bID\u7684\u83b7\u53d6\u65b9\u6cd5：pthread_self<\/p>\n

\u53ef\u4ee5\u5728\u4e4b\u524d\u4ee3\u7801\u4e2d\u52a0\u4e0a\u8be5\u51fd\u6570\u8fdb\u884c\u5b9e\u9a8c<\/p>\n

#include <pthread.h>
\n#include <iostream>
\n#include <unistd.h>
\n#include <string>
\nvoid *handler(void *th)
\n{
\n std::string name = static_cast<const char *>(th);
\n pthread_t ID;
\n ID=pthread_self();
\n std::cout<<"ID-1 : "<<ID<<std::endl;
\n while (true)
\n {
\n sleep(1);
\n std::cout << "I'm " << name << std::endl;
\n }
\n}<\/p>\n

int main()
\n{
\n pthread_t thread;
\n pthread_t mID;
\n pthread_create(&thread, NULL, handler, (void *)"thread -1");
\n mID=pthread_self();
\n std::cout<<"main ID ="<<mID<<std::endl;
\n while (true)
\n {
\n std::cout << "I'm main thread" << std::endl;
\n sleep(1);
\n }
\n}<\/p>\n

\"\"<\/p>\n

\u53ef\u4ee5\u53d1\u73b0\u6253\u5370\u51fa\u4e86\u4e24\u4e2a\u5f88\u5927\u7684\u6570\u5b57，\u800c\u4e14\u8ddf\u6211\u4eec\u521a\u521a\u901a\u8fc7ps -aL\u67e5\u8be2\u5230\u7684：LWP\u6807\u8bc6\u7b26\u5927\u5c0f\u5b8c\u5168\u4e0d\u4e00\u6837，\u5176\u5b9e\u901a\u8fc7\u8fd9\u4e2apthread_self\u51fd\u6570\u83b7\u53d6\u5230\u7684ID\u5e76\u4e0d\u662fLWP\u63d0\u4f9b\u7684\u6807\u8bc6\u7b26，\u800c\u662fpthread\u5e93\u7ed9\u6bcf\u4e2a\u7ebf\u7a0b\u7ef4\u62a4\u7684\u8fdb\u7a0b\u5185\u552f\u4e00\u6807\u8bc6\u7b26，\u7531\u4e8e\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709\u81ea\u5df1\u72ec\u7acb\u7684\u7a7a\u95f4，\u6545\u800c\u8be5\u6807\u8bc6\u7b26\u7684\u4f5c\u7528\u57df\u662f\u8fdb\u7a0b\u5185\u800c\u975e\u7cfb\u7edf\u5168\u5c40，\u8fd9\u4e2a\u6807\u8bc6\u7b26\u5176\u5b9e\u5bf9\u5e94\u7684\u662f\u4e00\u4e2a\u8fdb\u7a0b\u865a\u62df\u7a7a\u95f4\u4e0a\u7684\u5730\u5740，\u901a\u8fc7\u8fd9\u4e2a\u5730\u5740\u53ef\u4ee5\u627e\u5230\u8be5\u7ebf\u7a0b\u76f8\u5173\u4fe1\u606f\u3002<\/p>\n

pthread_exit\/pthread_cancel\u2014\u2014\u7ebf\u7a0b\u7ec8\u6b62<\/h4>\n

\"\"<\/p>\n

\"\"<\/p>\n

\u8fd9\u4e24\u4e2a\u51fd\u6570\u5747\u7528\u4e8e\u7ebf\u7a0b\u7ec8\u6b62，\u533a\u522b\u5728\u4e8epthread_exit\u51fd\u6570\u7528\u4e8e\u7ec8\u7ed3\u81ea\u8eab\u7ebf\u7a0b，\u800cpthread_cancel\u51fd\u6570\u53ef\u4ee5\u7ec8\u7ed3\u5176\u4ed6\u7ebf\u7a0b\u3002<\/p>\n

pthread_exit<\/h5>\n

\u8be5\u51fd\u6570\u6ca1\u6709\u8fd4\u56de\u503c，\u8fdb\u884c\u8c03\u7528\u65f6\u53ef\u4ee5\u901a\u8fc7retval\u53c2\u6570\u5e26\u51fa\u7ebf\u7a0b\u8fd4\u56de\u503c（\u7b49\u540c\u4e8e\u7ebf\u7a0b\u6267\u884c\u51fd\u6570return void*）\u6ce8\u610f：\u4e0d\u8981\u4f20\u5165\u5c40\u90e8\u53d8\u91cf，\u5c40\u90e8\u53d8\u91cf\u4f4d\u4e8e\u6808\u4e0a，\u7ebf\u7a0b\u7ed3\u675f\u6808\u7ed3\u6784\u9500\u6bc1，\u540e\u671f\u8fdb\u884c\u9000\u51fa\u7801\u56de\u6536\u4f1a\u5bfc\u81f4\u91ce\u6307\u9488\u5f15\u53d1\u6bb5\u9519\u8bef\u3002<\/p>\n

pthread_cancel<\/h5>\n

pthread_cancel(pthread_t thread) \u4ee5\u76ee\u6807\u7ebf\u7a0b\u7684 ID（pthread_t\u7c7b\u578b）\u4e3a\u552f\u4e00\u5165\u53c2，\u6838\u5fc3\u4f5c\u7528\u662f\u5411\u6307\u5b9a\u7ebf\u7a0b\u53d1\u9001\u53d6\u6d88\u4fe1\u53f7，\u89e6\u53d1\u5176\u5728\u53d6\u6d88\u70b9\u7ec8\u6b62\u6267\u884c\u3002<\/p>\n

pthread_join\u2014\u2014\u7ebf\u7a0b\u7b49\u5f85<\/h4>\n

\u5728\u8fdb\u7a0b\u5c42\u9762，\u5b50\u8fdb\u7a0b\u9000\u51fa\u540e\u82e5\u7236\u8fdb\u7a0b\u672a\u8c03\u7528 `wait\/waitpid` \u56de\u6536，\u4f1a\u4ea7\u751f\u50f5\u5c38\u8fdb\u7a0b（\u5360\u7528 PID\u3001\u8fdb\u7a0b\u8868\u9879\u7b49\u5185\u6838\u8d44\u6e90），\u9020\u6210\u7cfb\u7edf\u7ea7\u8d44\u6e90\u6cc4\u6f0f； \u7ebf\u7a0b\u5c42\u9762\u867d\u4e0d\u5b58\u5728\u300c\u50f5\u5c38\u7ebf\u7a0b\u300d，\u4f46\u5982\u679c\u4e3b\u7ebf\u7a0b\u5148\u9000\u51fa\u4e14\u672a\u901a\u8fc7 `pthread_join`\/`pthread_detach` \u56de\u6536\u5b50\u7ebf\u7a0b，\u4f1a\u5bfc\u81f4\u5b50\u7ebf\u7a0b\u7684\u7528\u6237\u6001\u8d44\u6e90（\u5982\u7ebf\u7a0b\u6808\u3001TLS \u7ebf\u7a0b\u5c40\u90e8\u5b58\u50a8）\u548c\u5185\u6838\u6001 `task_struct` \u4e2d\u90e8\u5206\u79c1\u6709\u6570\u636e\u65e0\u6cd5\u53ca\u65f6\u91ca\u653e，\u8fdb\u800c\u9020\u6210\u8fdb\u7a0b\u5185\u7684\u5185\u5b58\u6cc4\u6f0f\u3002<\/p>\n

\"\"<\/p>\n

\u8be5\u51fd\u6570\u8c03\u7528\u65f6\u9700\u8981\u4f20\u5165\u4e24\u4e2a\u53c2\u6570：<\/p>\n

thread：\u901a\u8fc7pthread_self\u83b7\u53d6\u7684\u8fdb\u7a0b\u5185\u7ebf\u7a0b\u552f\u4e00\u6807\u8bc6\u7b26，\u4f20\u5165\u9700\u8981\u8fdb\u884c\u7b49\u5f85\u56de\u6536\u7684\u6807\u8bc6\u7b26\u5373\u53ef\u3002<\/p>\n

retval：\u8f93\u51fa\u578b\u53c2\u6570，\u6307\u5411\u5b58\u50a8\u5b50\u7ebf\u7a0b\u8fd4\u56de\u503c\u7684\u5730\u5740，\u82e5\u4e0d\u9700\u8981\u63a5\u6536\u8fd4\u56de\u503c\u53ef\u4f20 NULL\u3002<\/p>\n

  • \u5b50\u7ebf\u7a0b\u901a\u8fc7 pthread_exit(void *ret) \u6216\u5b50\u7ebf\u7a0b\u6267\u884c\u51fd\u6570\u00a0return void* \u8bbe\u5b9a\u9000\u51fa\u8fd4\u56de\u503c；<\/li>\n
  • \u5185\u6838\u4f1a\u4fdd\u5b58\u8fd9\u4e2a\u8fd4\u56de\u503c，\u76f4\u5230\u4e3b\u7ebf\u7a0b\u8c03\u7528 pthread_join；<\/li>\n
  • \u4e3b\u7ebf\u7a0b\u901a\u8fc7 retval \u62ff\u5230\u5b50\u7ebf\u7a0b\u7684\u8fd4\u56de\u503c（*retval \u5c31\u662f\u5b50\u7ebf\u7a0b\u7684\u8fd4\u56de\u503c）\u3002<\/li>\n

    \u8865\u5145：clone\u2014\u2014pthread\u5e95\u5c42\u5b9e\u73b0<\/h4>\n

    \"\"<\/p>\n

    pthread \u5e93\u8c03\u7528pthread_create()\u521b\u5efa\u7ebf\u7a0b\u65f6，\u5e95\u5c42\u4f1a\u8c03\u7528clone()，\u5e76\u4f20\u5165\u6838\u5fc3\u53c2\u6570：<\/p>\n

      \n
    • CLONE_VM：\u65b0\u7ebf\u7a0b（LWP）\u4e0e\u7236\u8fdb\u7a0b\u5171\u4eab\u865a\u62df\u5730\u5740\u7a7a\u95f4（\u5305\u62ec\u5806\u3001\u5168\u5c40\u53d8\u91cf），\u8fd9\u662f\u7ebf\u7a0b\u4e0e\u72ec\u7acb\u8fdb\u7a0b\u7684\u6838\u5fc3\u533a\u522b；<\/li>\n
    • CLONE_FILES：\u5171\u4eab\u6587\u4ef6\u63cf\u8ff0\u7b26\u8868，\u7ebf\u7a0b\u95f4\u53ef\u590d\u7528\u6253\u5f00\u7684\u6587\u4ef6\u3001\u5957\u63a5\u5b57\u7b49；<\/li>\n
    • CLONE_SIGHAND：\u5171\u4eab\u4fe1\u53f7\u5904\u7406\u51fd\u6570，\u907f\u514d\u91cd\u590d\u6ce8\u518c\u4fe1\u53f7\u903b\u8f91；<\/li>\n
    • CLONE_THREAD：\u5c06\u65b0\u7ebf\u7a0b\u52a0\u5165\u7236\u8fdb\u7a0b\u7684\u7ebf\u7a0b\u7ec4，\u7edf\u4e00\u7ba1\u7406 PID\/LWP；\u8fd9\u4e9b\u53c2\u6570\u7ec4\u5408\u8ba9\u65b0\u521b\u5efa\u7684\u6267\u884c\u6d41\u6210\u4e3a \u201c\u5171\u4eab\u5927\u90e8\u5206\u8d44\u6e90\u7684\u8f7b\u91cf\u7ea7\u8fdb\u7a0b\u201d，\u5373\u7528\u6237\u6001\u611f\u77e5\u7684 \u201c\u7ebf\u7a0b\u201d\u3002<\/li>\n<\/ul>\n

      pthread\u5e93\u7684\u5c01\u88c5\u901a\u8fc7clone()\u7684\u53c2\u6570\u63a7\u5236\u8d44\u6e90\u5171\u4eab\u7c92\u5ea6，\u5c06\u5185\u6838\u7684\u8f7b\u91cf\u7ea7\u8fdb\u7a0b（LWP）\u8f6c\u5316\u4e3a\u7528\u6237\u6001\u7684 \u201c\u7ebf\u7a0b\u201d \u6982\u5ff5，\u5e76\u63d0\u4f9b\u7edf\u4e00\u7684\u7ebf\u7a0b\u521b\u5efa\u3001\u540c\u6b65\u3001\u7ba1\u7406\u63a5\u53e3，\u65e2\u590d\u7528\u4e86 Linux \u5185\u6838\u7684\u8fdb\u7a0b\u8c03\u5ea6\u903b\u8f91，\u53c8\u6ee1\u8db3\u4e86\u591a\u7ebf\u7a0b\u5f00\u53d1\u7684\u6613\u7528\u6027\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

      \u4e00\u3001\u7ebf\u7a0b\u6982\u5ff5\u7406\u89e31.\u4f55\u4e3a\u7ebf\u7a0b\u2014\u2014\u7ebf\u7a0b\u4e0e\u8fdb\u7a0b\u7684\u533a\u522b\u8fdb\u7a0b\u7b80\u5355\u8bf4\u5c31\u662f\u4e00\u4e2a\u7a0b\u5e8f\u7684\u6267\u884c\u8fc7\u7a0b，\u6709\u4e86\u8fd9\u4e2a\u6982\u5ff5，\u5c31\u53ef\u4ee5\u8986\u76d6\u7cfb\u7edf\u7f16\u7a0b\u7684\u5927\u90e8\u5206\u60c5\u666f\u4e86，\u90a3\u4e48\u7ebf\u7a0b\u7684\u51fa\u73b0\u53c8\u6709\u4ec0\u4e48\u610f\u4e49\u5462？\u5176\u5b9e\u7a0b\u5e8f\u7684\u4e00\u6bb5\u6267\u884c\u8fc7\u7a0b\u786e\u5b9e\u53ef\u4ee5\u53eb\u505a\u8fdb\u7a0b，\u4f46\u662f\u771f\u6b63\u7684\u6267\u884c\u5bf9\u8c61\u5e76\u4e0d\u662f\u8fdb\u7a0b，\u800c\u662f\u7ebf\u7a0b（\u8f7b\u91cf\u5316\u7684\u6267\u884c\u5355\u5143）\u3002\u5927\u4f53\u6765\u8bf4，\u8fdb\u7a0b\u76f8\u5f53\u4e8e\u8d44\u6e90\u5206\u914d\u7684\u57fa\u672c\u5355\u4f4d，\u800c\u7ebf\u7a0b\u662f\u8c03\u5ea6\u7684\u57fa\u672c\u5355\u4f4d，\u4e00<\/p>\n","protected":false},"author":2,"featured_media":75705,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,43,44],"topic":[],"class_list":["post-75714","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-linux","tag-43","tag-44"],"yoast_head":"\n\u3010Linux\u3011\u7ebf\u7a0b\u521d\u6b65\u2014\u2014\u7ebf\u7a0b\u6982\u5ff5\u4ee5\u53ca\u63a5\u53e3\u8ba4\u8bc6 - 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