{"id":78344,"date":"2026-02-27T07:49:28","date_gmt":"2026-02-26T23:49:28","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/78344.html"},"modified":"2026-02-27T07:49:28","modified_gmt":"2026-02-26T23:49:28","slug":"linux-%e7%bd%91%e7%bb%9c-7","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/78344.html","title":{"rendered":"Linux \u7f51\u7edc (7)"},"content":{"rendered":"

netstat <\/span><\/h2>\n

netstat <\/span>\u662f\u4e00\u4e2a\u7528\u6765\u67e5\u770b\u7f51\u7edc\u72b6\u6001\u7684\u91cd\u8981\u5de5\u5177<\/span>. <\/span><\/p>\n

\u8bed\u6cd5<\/span>：<\/span>netstat [<\/span>\u9009\u9879<\/span>] <\/span><\/p>\n

\u529f\u80fd<\/span>：\u67e5\u770b\u7f51\u7edc\u72b6\u6001 <\/span><\/p>\n

\u5e38\u7528\u9009\u9879<\/span>： <\/span><\/p>\n

\u2022 <\/span><\/p>\n

n <\/span>\u62d2\u7edd\u663e\u793a\u522b\u540d，\u80fd\u663e\u793a\u6570\u5b57\u7684\u5168\u90e8\u8f6c\u5316\u6210\u6570\u5b57 <\/span><\/p>\n

\u2022 <\/span><\/p>\n

l <\/span>\u4ec5\u5217\u51fa\u6709\u5728 <\/span>Listen (<\/span>\u76d1\u542c<\/span>) <\/span>\u7684\u670d\u52d9\u72b6\u6001 <\/span><\/p>\n

\u2022 <\/span><\/p>\n

p <\/span>\u663e\u793a\u5efa\u7acb\u76f8\u5173\u94fe\u63a5\u7684\u7a0b\u5e8f\u540d <\/span><\/p>\n

\u2022 <\/span><\/p>\n

t (tcp)<\/span>\u4ec5\u663e\u793a <\/span>tcp <\/span>\u76f8\u5173\u9009\u9879 <\/span><\/p>\n

\u2022 <\/span><\/p>\n

u (udp)<\/span>\u4ec5\u663e\u793a <\/span>udp <\/span>\u76f8\u5173\u9009\u9879 <\/span><\/p>\n

\u2022 <\/span><\/p>\n

a (all)<\/span>\u663e\u793a\u6240\u6709\u9009\u9879，\u9ed8\u8ba4\u4e0d\u663e\u793a <\/span>LISTEN <\/span>\u76f8\u5173<\/span><\/p>\n

\"\"<\/p>\n

pidof <\/span><\/h2>\n

\u5728\u67e5\u770b\u670d\u52a1\u5668\u7684\u8fdb\u7a0b <\/span>id <\/span>\u65f6\u975e\u5e38\u65b9\u4fbf<\/span>. <\/span><\/p>\n

\u8bed\u6cd5<\/span>：<\/span>pidof [<\/span>\u8fdb\u7a0b\u540d<\/span>] <\/span><\/p>\n

\u529f\u80fd<\/span>：\u901a\u8fc7\u8fdb\u7a0b\u540d<\/span>, <\/span>\u67e5\u770b\u8fdb\u7a0b <\/span>id<\/span><\/p>\n<\/p>\n

TCP\u6293\u5305<\/h2>\n<\/p>\n

sudo tcpdump -i any tcp<\/p>\n

\u6ce8\u610f：<\/span>-i any <\/span>\u6307\u5b9a\u6355\u83b7\u6240\u6709\u7f51\u7edc\u63a5\u53e3\u4e0a\u7684\u6570\u636e\u5305，<\/span>tcp <\/span>\u6307\u5b9a\u6355\u83b7 <\/span>TCP <\/span>\u534f\u8bae\u7684\u6570\u636e <\/span><\/p>\n

\u5305\u3002<\/span>i <\/span>\u53ef\u4ee5\u7406\u89e3\u6210\u4e3a <\/span>interface <\/span>\u7684\u610f\u601d<\/span><\/p>\n

\"\"<\/p>\n

\u5982\u679c\u4f60\u53ea\u60f3\u6355\u83b7\u67d0\u4e2a\u7279\u5b9a\u7f51\u7edc\u63a5\u53e3（\u5982 <\/span>eth0<\/span>）\u4e0a\u7684 <\/span>TCP <\/span>\u62a5\u6587，\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4：<\/span><\/p>\n

sudo tcpdump -i eth0 tcp<\/p>\n

\"\"<\/p>\n

\u4f7f\u7528 <\/span>host <\/span>\u5173\u952e\u5b57\u53ef\u4ee5\u6307\u5b9a\u6e90\u6216\u76ee\u7684 <\/span>IP <\/span>\u5730\u5740\u3002\u4f8b\u5982，\u8981\u6355\u83b7\u6e90 <\/span>IP <\/span>\u5730\u5740\u4e3a <\/span><\/p>\n

192.168.1.100 <\/span>\u7684 <\/span>TCP <\/span>\u62a5\u6587，\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4：<\/span><\/p>\n

$ sudo tcpdump src host 192.168.1.100 and tcp<\/p>\n

\u540c\u65f6\u6307\u5b9a\u6e90\u548c\u76ee\u7684 <\/span>IP <\/span>\u5730\u5740，\u53ef\u4ee5\u4f7f\u7528 <\/span>and <\/span>\u5173\u952e\u5b57\u8fde\u63a5\u4e24\u4e2a\u6761\u4ef6：<\/span><\/p>\n

sudo tcpdump src host 192.168.1.100 and dst host 192.168.1.200
\nand tcp<\/p>\n

\u6355\u83b7\u7279\u5b9a\u7aef\u53e3\u7684 <\/span>TCP <\/span>\u62a5\u6587 <\/span><\/p>\n

\u4f7f\u7528 <\/span>port <\/span>\u5173\u952e\u5b57\u53ef\u4ee5\u6307\u5b9a\u7aef\u53e3\u53f7\u3002<\/span><\/p>\n

\u4f8b\u5982，\u8981\u6355\u83b7\u7aef\u53e3\u53f7\u4e3a <\/span>80 <\/span>\u7684 <\/span>TCP <\/span>\u62a5\u6587（\u901a\u5e38\u662f HTTP \u8bf7\u6c42），\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4：<\/span><\/p>\n

sudo tcpdump port 80 and tcp<\/p>\n

\u4fdd\u5b58\u6355\u83b7\u7684\u6570\u636e\u5305\u5230\u6587\u4ef6 <\/span><\/p>\n

\u4f7f\u7528 <\/span>-w <\/span>\u9009\u9879\u53ef\u4ee5\u5c06\u6355\u83b7\u7684\u6570\u636e\u5305\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d，\u4ee5\u4fbf\u540e\u7eed\u5206\u6790\u3002<\/span><\/p>\n

sudo tcpdump -i eth0 port 80 -w data.pcap<\/p>\n

\u8fd9\u5c06\u628a\u6355\u83b7\u5230\u7684 <\/span>HTTP <\/span>\u6d41\u91cf\u4fdd\u5b58\u5230\u540d\u4e3a <\/span>data.pcap <\/span>\u7684\u6587\u4ef6\u4e2d\u3002 <\/span><\/p>\n

\u2022 <\/span><\/p>\n

\u4e86\u89e3：<\/span>pcap <\/span>\u540e\u7f00\u7684\u6587\u4ef6\u901a\u5e38\u4e0e <\/span>PCAP<\/span>（<\/span>Packet Capture<\/span>）\u6587\u4ef6\u683c\u5f0f\u76f8\u5173，\u8fd9\u662f\u4e00 <\/span><\/p>\n

\u79cd\u7528\u4e8e\u6355\u83b7\u7f51\u7edc\u6570\u636e\u5305\u7684\u6587\u4ef6\u683c\u5f0f<\/span><\/p>\n

\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6570\u636e\u5305\u8fdb\u884c\u5206\u6790 <\/span><\/p>\n

\u4f7f\u7528 <\/span>-r <\/span>\u9009\u9879\u53ef\u4ee5\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6570\u636e\u5305\u8fdb\u884c\u5206\u6790<\/span><\/p>\n

tcpdump -r data.pcap<\/p>\n

\u8fd9\u5c06\u8bfb\u53d6 data.pcap \u6587\u4ef6\u4e2d\u7684\u6570\u636e\u5305\u5e76\u8fdb\u884c\u5206\u6790\u3002
\n\u6ce8\u610f\u4e8b\u9879
\n\u2022 \u4f7f\u7528 tcpdump \u65f6，\u8bf7\u786e\u4fdd\u4f60\u6709\u8db3\u591f\u7684\u6743\u9650\u6765\u6355\u83b7\u7f51\u7edc\u63a5\u53e3\u4e0a\u7684\u6570\u636e\u5305\u3002\u901a\u5e38，\u4f60
\n\u9700\u8981\u4ee5 root \u7528\u6237\u8eab\u4efd\u8fd0\u884c tcpdump\u3002
\n\u2022 \u4f7f\u7528 tcpdump \u7684\u65f6\u5019，\u6709\u4e9b\u4e3b\u673a\u540d\u4f1a\u88ab\u4e91\u670d\u52a1\u5668\u89e3\u91ca\u6210\u4e3a\u968f\u673a\u7684\u4e3b\u673a\u540d，\u5982\u679c\u4e0d
\n\u60f3\u8981，\u5c31\u7528-n \u9009\u9879<\/p>\n<\/p>\n

\u2022 \u4e3b\u673a\u89c2\u5bdf\u4e09\u6b21\u63e1\u624b\u7684\u7b2c\u4e09\u6b21\u63e1\u624b，\u4e0d\u5360\u5e8f\u53f7<\/p>\n<\/p>\n

\u81ea\u65cb\u9501<\/h2>\n

1. \u6982\u8ff0<\/h5>\n

\u81ea\u65cb\u9501\u662f\u4e00\u79cd\u591a\u7ebf\u7a0b\u540c\u6b65\u673a\u5236，\u7528\u4e8e\u4fdd\u62a4\u5171\u4eab\u8d44\u6e90\u3002\u7ebf\u7a0b\u83b7\u53d6\u9501\u5931\u8d25\u65f6，\u4f1a ** \u5faa\u73af\u81ea\u65cb（\u4e0d\u65ad\u68c0\u67e5\u9501\u72b6\u6001）** \u800c\u975e\u8fdb\u5165\u4f11\u7720，\u4ee5\u6b64\u51cf\u5c11\u7ebf\u7a0b\u5207\u6362\u5f00\u9500，\u9002\u7528\u4e8e\u77ed\u65f6\u95f4\u9501\u7ade\u4e89；\u4f46\u4e0d\u5408\u7406\u4f7f\u7528\u4f1a\u9020\u6210 CPU \u8d44\u6e90\u6d6a\u8d39\u3002<\/p>\n

2. \u539f\u7406<\/h5>\n
    \n
  • \u7528\u5171\u4eab\u6807\u5fd7\u4f4d\u8868\u793a\u9501\u72b6\u6001：true\u8868\u793a\u9501\u88ab\u5360\u7528，false\u8868\u793a\u9501\u53ef\u7528\u3002<\/li>\n
  • \u7ebf\u7a0b\u5c1d\u8bd5\u83b7\u53d6\u9501\u65f6：\n
      \n
    • \u82e5\u6807\u5fd7\u4f4d\u4e3afalse，\u5219\u5c06\u5176\u8bbe\u4e3atrue，\u5360\u7528\u9501\u5e76\u8fdb\u5165\u4e34\u754c\u533a\u3002<\/li>\n
    • \u82e5\u6807\u5fd7\u4f4d\u4e3atrue，\u5219\u5728\u5faa\u73af\u4e2d\u6301\u7eed\u81ea\u65cb\u7b49\u5f85，\u76f4\u5230\u9501\u88ab\u91ca\u653e\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
      3. \u4f18\u7f3a\u70b9<\/h5>\n
        \n
      • \u4f18\u70b9：\n
          \n
        • \u4f4e\u5ef6\u8fdf：\u907f\u514d\u7ebf\u7a0b\u4f11\u7720\u4e0e\u5524\u9192，\u63d0\u5347\u9501\u64cd\u4f5c\u6548\u7387\u3002<\/li>\n
        • \u51cf\u5c11\u7cfb\u7edf\u8c03\u5ea6\u5f00\u9500：\u7b49\u5f85\u7ebf\u7a0b\u4e0d\u963b\u585e，\u65e0\u9700\u4e0a\u4e0b\u6587\u5207\u6362\u3002<\/li>\n<\/ul>\n<\/li>\n
        • \u7f3a\u70b9：\n
            \n
          • CPU \u8d44\u6e90\u6d6a\u8d39：\u9501\u6301\u6709\u65f6\u95f4\u8f83\u957f\u65f6，\u81ea\u65cb\u7ebf\u7a0b\u4f1a\u6301\u7eed\u5360\u7528 CPU\u3002<\/li>\n
          • \u53ef\u80fd\u5f15\u53d1\u6d3b\u9501：\u591a\u7ebf\u7a0b\u540c\u65f6\u81ea\u65cb\u4e14\u65e0\u9000\u907f\u7b56\u7565\u65f6，\u53ef\u80fd\u90fd\u65e0\u6cd5\u83b7\u53d6\u9501\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
            4. \u4f7f\u7528\u573a\u666f<\/h5>\n
              \n
            • \u9501\u5360\u7528\u65f6\u95f4\u6781\u77ed\u7684\u573a\u666f（\u5982\u591a\u7ebf\u7a0b\u5bf9\u5171\u4eab\u6570\u636e\u8fdb\u884c\u7b80\u5355\u8bfb\u5199）\u3002<\/li>\n
            • \u7cfb\u7edf\u5e95\u5c42，\u7528\u4e8e\u540c\u6b65\u591a\u4e2a CPU \u5bf9\u5171\u4eab\u8d44\u6e90\u7684\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n
              5. \u5b9e\u73b0\u539f\u7406<\/h5>\n

              \u4f9d\u8d56\u539f\u5b50\u64cd\u4f5c（\u5982 CAS \u6307\u4ee4）\u4fdd\u8bc1\u9501\u72b6\u6001\u4fee\u6539\u7684\u539f\u5b50\u6027，\u907f\u514d\u5e76\u53d1\u51b2\u7a81<\/p>\n<\/p>\n

              \u6ce8\u610f\u4e8b\u9879<\/h4>\n
            • \u9501\u6301\u6709\u65f6\u95f4\u8981\u77ed：\u4f7f\u7528\u81ea\u65cb\u9501\u65f6，\u5fc5\u987b\u786e\u4fdd\u9501\u88ab\u91ca\u653e\u7684\u65f6\u95f4\u5c3d\u53ef\u80fd\u77ed，\u5426\u5219\u7b49\u5f85\u7ebf\u7a0b\u4f1a\u6301\u7eed\u81ea\u65cb，\u9020\u6210\u5927\u91cf CPU \u8d44\u6e90\u6d6a\u8d39\u3002<\/li>\n
            • \u591a CPU \u73af\u5883\u4e0b\u7684\u6548\u7387\u95ee\u9898：\u5728\u591a CPU \u73af\u5883\u4e2d，\u81ea\u65cb\u9501\u53ef\u80fd\u4e0d\u5982\u5176\u4ed6\u9501\u673a\u5236\u9ad8\u6548，\u56e0\u4e3a\u7b49\u5f85\u7ebf\u7a0b\u53ef\u80fd\u5728\u4e0d\u540c\u7684 CPU \u6838\u5fc3\u4e0a\u6301\u7eed\u81ea\u65cb\u7b49\u5f85，\u65e0\u6cd5\u91ca\u653e\u8ba1\u7b97\u8d44\u6e90\u3002<\/li>\n
              \n

              \u7ed3\u8bba<\/h4>\n

              \u81ea\u65cb\u9501\u662f\u4e00\u79cd\u9002\u7528\u4e8e\u77ed\u65f6\u95f4\u9501\u7ade\u4e89\u7684\u540c\u6b65\u673a\u5236，\u5b83\u901a\u8fc7\u907f\u514d\u7ebf\u7a0b\u4f11\u7720\u548c\u4e0a\u4e0b\u6587\u5207\u6362，\u663e\u8457\u964d\u4f4e\u4e86\u9501\u64cd\u4f5c\u7684\u5f00\u9500，\u63d0\u5347\u4e86\u6548\u7387\u3002\u4f46\u5b83\u4e5f\u5b58\u5728\u660e\u663e\u7f3a\u70b9：\u957f\u65f6\u95f4\u6301\u6709\u9501\u4f1a\u5bfc\u81f4 CPU \u8d44\u6e90\u6d6a\u8d39，\u4e14\u5728\u65e0\u9000\u907f\u7b56\u7565\u7684<\/p>\n<\/p>\n

              1. pthread_spin_init() \u2014\u2014 \u521d\u59cb\u5316\u81ea\u65cb\u9501<\/h3>\n

              int pthread_spin_init(pthread_spinlock_t *lock, int pshared);<\/p>\n\n\u9879\u8bf4\u660e<\/tr>\n\n\n\n\n\n\n
              \u529f\u80fd<\/td>\n\u521d\u59cb\u5316\u4e00\u4e2a\u81ea\u65cb\u9501，\u5fc5\u987b\u5728\u4f7f\u7528\u524d\u8c03\u7528<\/td>\n<\/tr>\n
              \u53c2\u6570 1 lock<\/td>\n\u8f93\u5165\u8f93\u51fa\u53c2\u6570：\u6307\u5411pthread_spinlock_t\u53d8\u91cf\u7684\u6307\u9488，\u7528\u4e8e\u5b58\u50a8\u521d\u59cb\u5316\u540e\u7684\u9501\u72b6\u6001<\/td>\n<\/tr>\n
              \u53c2\u6570 2 pshared<\/td>\n\u8f93\u5165\u53c2\u6570：\u9501\u7684\u5171\u4eab\u8303\u56f4- PTHREAD_PROCESS_PRIVATE：\u4ec5\u5f53\u524d\u8fdb\u7a0b\u5185\u7ebf\u7a0b\u5171\u4eab（\u6700\u5e38\u7528）- PTHREAD_PROCESS_SHARED：\u53ef\u8de8\u8fdb\u7a0b\u5171\u4eab（\u9700\u914d\u5408\u5171\u4eab\u5185\u5b58）<\/td>\n<\/tr>\n
              \u8fd4\u56de\u503c<\/td>\n\u6210\u529f\u8fd4\u56de0；\u5931\u8d25\u8fd4\u56de\u975e 0 \u9519\u8bef\u7801（\u5982EINVAL\u3001ENOMEM）<\/td>\n<\/tr>\n
              \u6ce8\u610f<\/td>\n\u672a\u521d\u59cb\u5316\u7684\u9501\u4e0d\u80fd\u4f7f\u7528；\u540c\u4e00\u9501\u4e0d\u80fd\u91cd\u590d\u521d\u59cb\u5316<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
              \n

              2. pthread_spin_destroy() \u2014\u2014 \u9500\u6bc1\u81ea\u65cb\u9501<\/h4>\n

              int pthread_spin_destroy(pthread_spinlock_t *lock);<\/p>\n\n\u9879\u8bf4\u660e<\/tr>\n\n\n\n\n\n
              \u529f\u80fd<\/td>\n\u9500\u6bc1\u5df2\u521d\u59cb\u5316\u7684\u81ea\u65cb\u9501，\u91ca\u653e\u8d44\u6e90<\/td>\n<\/tr>\n
              \u53c2\u6570 lock<\/td>\n\u8f93\u5165\u8f93\u51fa\u53c2\u6570：\u6307\u5411\u8981\u9500\u6bc1\u7684pthread_spinlock_t\u53d8\u91cf\u7684\u6307\u9488<\/td>\n<\/tr>\n
              \u8fd4\u56de\u503c<\/td>\n\u6210\u529f\u8fd4\u56de0；\u5931\u8d25\u8fd4\u56de\u975e 0 \u9519\u8bef\u7801（\u5982EINVAL\u8868\u793a\u9501\u65e0\u6548）<\/td>\n<\/tr>\n
              \u6ce8\u610f<\/td>\n\u4e0d\u80fd\u9500\u6bc1\u6b63\u5728\u88ab\u5176\u4ed6\u7ebf\u7a0b\u6301\u6709\u7684\u9501；\u9500\u6bc1\u540e\u4e0d\u80fd\u518d\u4f7f\u7528\u8be5\u9501，\u9664\u975e\u91cd\u65b0\u521d\u59cb\u5316<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
              \n

              3. pthread_spin_lock() \u2014\u2014 \u963b\u585e\u5f0f\u52a0\u9501<\/h4>\n

              <\/h4>\n<\/p>\n

              int pthread_spin_lock(pthread_spinlock_t *lock);<\/p>\n\n\u9879\u8bf4\u660e<\/tr>\n\n\n\n\n\n
              \u529f\u80fd<\/td>\n\u963b\u585e\u5f0f\u83b7\u53d6\u9501：\u83b7\u53d6\u4e0d\u5230\u5219\u6301\u7eed\u81ea\u65cb\u7b49\u5f85，\u76f4\u5230\u9501\u53ef\u7528<\/td>\n<\/tr>\n
              \u53c2\u6570 lock<\/td>\n\u8f93\u5165\u8f93\u51fa\u53c2\u6570：\u6307\u5411\u8981\u83b7\u53d6\u7684\u81ea\u65cb\u9501\u6307\u9488<\/td>\n<\/tr>\n
              \u8fd4\u56de\u503c<\/td>\n\u6210\u529f\u8fd4\u56de0；\u5931\u8d25\u8fd4\u56de\u975e 0 \u9519\u8bef\u7801（\u5982EDEADLK\u68c0\u6d4b\u5230\u6b7b\u9501）<\/td>\n<\/tr>\n
              \u6ce8\u610f<\/td>\n\u81ea\u65cb\u9501\u4e0d\u652f\u6301\u91cd\u5165，\u540c\u4e00\u7ebf\u7a0b\u591a\u6b21\u52a0\u9501\u4f1a\u5bfc\u81f4\u6b7b\u9501；\u6301\u6709\u9501\u7684\u65f6\u95f4\u5fc5\u987b\u6781\u77ed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
              \n

              4. pthread_spin_trylock() \u2014\u2014 \u975e\u963b\u585e\u5f0f\u5c1d\u8bd5\u52a0\u9501<\/h4>\n<\/p>\n

              int pthread_spin_trylock(pthread_spinlock_t *lock);<\/p>\n\n\u9879\u8bf4\u660e<\/tr>\n\n\n\n\n\n
              \u529f\u80fd<\/td>\n\u975e\u963b\u585e\u5f0f\u5c1d\u8bd5\u52a0\u9501：\u83b7\u53d6\u4e0d\u5230\u5219\u7acb\u5373\u8fd4\u56de，\u4e0d\u4f1a\u81ea\u65cb\u7b49\u5f85<\/td>\n<\/tr>\n
              \u53c2\u6570 lock<\/td>\n\u8f93\u5165\u8f93\u51fa\u53c2\u6570：\u6307\u5411\u8981\u5c1d\u8bd5\u83b7\u53d6\u7684\u81ea\u65cb\u9501\u6307\u9488<\/td>\n<\/tr>\n
              \u8fd4\u56de\u503c<\/td>\n– \u6210\u529f\u83b7\u53d6\u9501：\u8fd4\u56de0- \u9501\u88ab\u5360\u7528：\u8fd4\u56deEBUSY- \u5176\u4ed6\u9519\u8bef：\u8fd4\u56de\u975e 0 \u9519\u8bef\u7801<\/td>\n<\/tr>\n
              \u6ce8\u610f<\/td>\n\u9002\u5408 \u201c\u4e0d\u60f3\u7b49\u5f85，\u5931\u8d25\u5219\u505a\u5176\u4ed6\u4e8b\u201d \u7684\u573a\u666f；\u540c\u6837\u4e0d\u652f\u6301\u91cd\u5165<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
              \n

              5. pthread_spin_unlock() \u2014\u2014 \u89e3\u9501<\/h4>\n<\/p>\n

              int pthread_spin_unlock(pthread_spinlock_t *lock);<\/p>\n\n\u9879\u8bf4\u660e<\/tr>\n\n\n\n\n\n
              \u529f\u80fd<\/td>\n\u91ca\u653e\u81ea\u65cb\u9501，\u5fc5\u987b\u7531\u6301\u6709\u9501\u7684\u7ebf\u7a0b\u8c03\u7528<\/td>\n<\/tr>\n
              \u53c2\u6570 lock<\/td>\n\u8f93\u5165\u8f93\u51fa\u53c2\u6570：\u6307\u5411\u8981\u91ca\u653e\u7684\u81ea\u65cb\u9501\u6307\u9488<\/td>\n<\/tr>\n
              \u8fd4\u56de\u503c<\/td>\n\u6210\u529f\u8fd4\u56de0；\u5931\u8d25\u8fd4\u56de\u975e 0 \u9519\u8bef\u7801（\u5982EPERM\u8868\u793a\u8c03\u7528\u7ebf\u7a0b\u4e0d\u6301\u6709\u8be5\u9501）<\/td>\n<\/tr>\n
              \u6ce8\u610f<\/td>\n\u672a\u6301\u6709\u9501\u7684\u7ebf\u7a0b\u8c03\u7528\u89e3\u9501，\u4f1a\u5bfc\u81f4\u672a\u5b9a\u4e49\u884c\u4e3a（\u5982\u7a0b\u5e8f\u5d29\u6e83）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

              #include <stdio.h>
              \n#include <stdlib.h>
              \n#include <string.h>
              \n#include <unistd.h>
              \n#include <pthread.h><\/p>\n

              int ticket = 20;
              \n\/\/ 1. \u53d6\u6d88\u81ea\u65cb\u9501\u53d8\u91cf\u6ce8\u91ca
              \npthread_spinlock_t lock;<\/p>\n

              void *route(void *arg)
              \n{
              \n char *id = (char *)arg;
              \n while (1)
              \n {
              \n \/\/ 2. \u52a0\u9501：\u83b7\u53d6\u81ea\u65cb\u9501，\u4fdd\u62a4\u4e34\u754c\u533a
              \n pthread_spin_lock(&lock);
              \n if (ticket > 0)
              \n {
              \n usleep(1000); \/\/ \u6a21\u62df\u552e\u7968\u8017\u65f6（\u77ed\u65f6\u95f4，\u7b26\u5408\u81ea\u65cb\u9501\u4f7f\u7528\u539f\u5219）
              \n printf("%s sells ticket:%d\\\\n", id, ticket);
              \n ticket–;
              \n \/\/ 3. \u89e3\u9501：\u91ca\u653e\u81ea\u65cb\u9501
              \n pthread_spin_unlock(&lock);
              \n }
              \n else
              \n {
              \n \/\/ 4. \u65e0\u7968\u65f6\u4e5f\u8981\u89e3\u9501，\u907f\u514d\u6b7b\u9501
              \n pthread_spin_unlock(&lock);
              \n break;
              \n }
              \n }
              \n \/\/ 5. C\u8bed\u8a00\u4e2d\u7528NULL\u800c\u975enullptr
              \n return NULL;
              \n}<\/p>\n

              int main(void)
              \n{
              \n \/\/ 6. \u521d\u59cb\u5316\u81ea\u65cb\u9501
              \n pthread_spin_init(&lock, PTHREAD_PROCESS_PRIVATE);
              \n pthread_t t1, t2, t3;<\/p>\n

              \/\/ \u521b\u5efa3\u4e2a\u552e\u7968\u7ebf\u7a0b
              \n pthread_create(&t1, NULL, route, (void *)"thread 1");
              \n pthread_create(&t2, NULL, route, (void *)"thread 2");
              \n pthread_create(&t3, NULL, route, (void *)"thread 3");<\/p>\n

              \/\/ 7. \u7b49\u5f85\u6240\u6709\u5b50\u7ebf\u7a0b\u6267\u884c\u5b8c\u6210（\u6838\u5fc3\u4fee\u590d\u70b9）
              \n pthread_join(t1, NULL);
              \n pthread_join(t2, NULL);
              \n pthread_join(t3, NULL);<\/p>\n

              \/\/ 8. \u9500\u6bc1\u81ea\u65cb\u9501，\u91ca\u653e\u8d44\u6e90
              \n pthread_spin_destroy(&lock);
              \n return 0;
              \n}<\/p>\n

              \"\"<\/p>\n<\/p>\n

              \u8bfb\u5199\u9501<\/span><\/h2>\n<\/p>\n

              \"\"<\/p>\n

              \u5728\u7f16\u5199\u591a\u7ebf\u7a0b\u7684\u65f6\u5019，\u6709\u4e00\u79cd\u60c5\u51b5\u662f\u5341\u5206\u5e38\u89c1\u7684\u3002\u90a3\u5c31\u662f，\u6709\u4e9b\u516c\u5171\u6570\u636e\u4fee\u6539\u7684\u673a\u4f1a <\/span><\/p>\n

              \u6bd4\u8f83\u5c11\u3002\u76f8\u6bd4\u8f83\u6539\u5199，\u5b83\u4eec\u8bfb\u7684\u673a\u4f1a\u53cd\u800c\u9ad8\u7684\u591a\u3002\u901a\u5e38\u800c\u8a00，\u5728\u8bfb\u7684\u8fc7\u7a0b\u4e2d，\u5f80\u5f80\u4f34 <\/span><\/p>\n

              \u968f\u7740\u67e5\u627e\u7684\u64cd\u4f5c，\u4e2d\u95f4\u8017\u65f6\u5f88\u957f\u3002\u7ed9\u8fd9\u79cd\u4ee3\u7801\u6bb5\u52a0\u9501，\u4f1a\u6781\u5927\u5730\u964d\u4f4e\u6211\u4eec\u7a0b\u5e8f\u7684\u6548 <\/span><\/p>\n

              \u7387\u3002\u90a3\u4e48\u6709\u6ca1\u6709\u4e00\u79cd\u65b9\u6cd5，\u53ef\u4ee5\u4e13\u95e8\u5904\u7406\u8fd9\u79cd\u591a\u8bfb\u5c11\u5199\u7684\u60c5\u51b5\u5462？ <\/span><\/p>\n

              \u6709，\u90a3\u5c31\u662f\u8bfb\u5199\u9501\u3002 <\/span><\/p>\n

              1.pthread_rwlockattr_setkind_np() \u2014\u2014 \u8bbe\u7f6e\u8bfb\u5199\u9501\u4f18\u5148\u7ea7<\/h5>\n

              int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t *attr, int pref);<\/p>\n

                \n
              • <\/li>\n
              • \n\n\u9879\u8bf4\u660e<\/tr>\n\n\n\n\n\n\n
                \u529f\u80fd<\/td>\n\u8bbe\u7f6e\u8bfb\u5199\u9501\u7684\u4f18\u5148\u7ea7\u7b56\u7565（\u8bfb\u8005\u4f18\u5148 \/ \u5199\u8005\u4f18\u5148），\u5c5e\u4e8e\u975e\u6807\u51c6\u6269\u5c55（_np \u8868\u793a non-portable）\u3002<\/td>\n<\/tr>\n
                \u53c2\u6570 attr<\/td>\n\u8f93\u5165\u53c2\u6570：\u6307\u5411 pthread_rwlockattr_t \u7c7b\u578b\u7684\u5c5e\u6027\u5bf9\u8c61\u6307\u9488，\u7528\u4e8e\u5b58\u50a8\u4f18\u5148\u7ea7\u8bbe\u7f6e\u3002<\/td>\n<\/tr>\n
                \u53c2\u6570 pref<\/td>\n\u8f93\u5165\u53c2\u6570：\u4f18\u5148\u7ea7\u9009\u9879，\u5171 3 \u79cd：- PTHREAD_RWLOCK_PREFER_READER_NP：\u9ed8\u8ba4，\u8bfb\u8005\u4f18\u5148，\u53ef\u80fd\u5bfc\u81f4\u5199\u8005\u9965\u997f- PTHREAD_RWLOCK_PREFER_WRITER_NP：\u5199\u8005\u4f18\u5148（\u5b58\u5728 BUG，\u5b9e\u9645\u8868\u73b0\u4e0e\u8bfb\u8005\u4f18\u5148\u4e00\u81f4）- PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP：\u5199\u8005\u4f18\u5148，\u4e14\u5199\u8005\u4e0d\u80fd\u9012\u5f52\u52a0\u9501<\/td>\n<\/tr>\n
                \u8fd4\u56de\u503c<\/td>\n\u6210\u529f\u8fd4\u56de 0；\u5931\u8d25\u8fd4\u56de\u975e 0 \u9519\u8bef\u7801（\u5982 EINVAL \u8868\u793a\u53c2\u6570\u65e0\u6548）\u3002<\/td>\n<\/tr>\n
                \u6ce8\u610f<\/td>\n\u8be5\u63a5\u53e3\u4e3a\u975e\u6807\u51c6\u6269\u5c55，\u4e0d\u540c\u7cfb\u7edf\u5b9e\u73b0\u53ef\u80fd\u5b58\u5728\u5dee\u5f02；\u4f18\u5148\u7ea7\u7b56\u7565\u4f1a\u5f71\u54cd\u8bfb\u5199\u9501\u7684\u7ade\u4e89\u884c\u4e3a，\u9700\u8c28\u614e\u9009\u62e9\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/li>\n<\/ul>\n
                2. pthread_rwlock_init() \u2014\u2014 \u521d\u59cb\u5316\u8bfb\u5199\u9501<\/h5>\n

                c<\/p>\n

                \u8fd0\u884c<\/p>\n

                int pthread_rwlock_init(pthread_rwlock_t *restrict rwlock, const pthread_rwlockattr_t *restrict attr);<\/p>\n\n\u9879\u8bf4\u660e<\/tr>\n\n\n\n\n\n\n
                \u529f\u80fd<\/td>\n\u521d\u59cb\u5316\u8bfb\u5199\u9501，\u5fc5\u987b\u5728\u4f7f\u7528\u524d\u8c03\u7528\u3002<\/td>\n<\/tr>\n
                \u53c2\u6570 rwlock<\/td>\n\u8f93\u5165\u8f93\u51fa\u53c2\u6570：\u6307\u5411 pthread_rwlock_t \u7c7b\u578b\u7684\u8bfb\u5199\u9501\u6307\u9488，\u7528\u4e8e\u5b58\u50a8\u521d\u59cb\u5316\u540e\u7684\u9501\u72b6\u6001\u3002<\/td>\n<\/tr>\n
                \u53c2\u6570 attr<\/td>\n\u8f93\u5165\u53c2\u6570：\u6307\u5411\u8bfb\u5199\u9501\u5c5e\u6027\u5bf9\u8c61\u7684\u6307\u9488；\u82e5\u4e3a NULL，\u5219\u4f7f\u7528\u9ed8\u8ba4\u5c5e\u6027（\u8bfb\u8005\u4f18\u5148）\u3002<\/td>\n<\/tr>\n
                \u8fd4\u56de\u503c<\/td>\n\u6210\u529f\u8fd4\u56de 0；\u5931\u8d25\u8fd4\u56de\u975e 0 \u9519\u8bef\u7801（\u5982 ENOMEM \u8868\u793a\u5185\u5b58\u4e0d\u8db3）\u3002<\/td>\n<\/tr>\n
                \u6ce8\u610f<\/td>\n\u672a\u521d\u59cb\u5316\u7684\u8bfb\u5199\u9501\u4e0d\u80fd\u4f7f\u7528；\u540c\u4e00\u9501\u4e0d\u80fd\u91cd\u590d\u521d\u59cb\u5316\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                \n
                3. pthread_rwlock_destroy() \u2014\u2014 \u9500\u6bc1\u8bfb\u5199\u9501<\/h5>\n

                int pthread_rwlock_destroy(pthread_rwlock_t *rwlock);<\/p>\n\n\u9879\u8bf4\u660e<\/tr>\n\n\n\n\n\n
                \u529f\u80fd<\/td>\n\u9500\u6bc1\u5df2\u521d\u59cb\u5316\u7684\u8bfb\u5199\u9501，\u91ca\u653e\u7cfb\u7edf\u8d44\u6e90\u3002<\/td>\n<\/tr>\n
                \u53c2\u6570 rwlock<\/td>\n\u8f93\u5165\u8f93\u51fa\u53c2\u6570：\u6307\u5411\u8981\u9500\u6bc1\u7684 pthread_rwlock_t \u7c7b\u578b\u7684\u8bfb\u5199\u9501\u6307\u9488\u3002<\/td>\n<\/tr>\n
                \u8fd4\u56de\u503c<\/td>\n\u6210\u529f\u8fd4\u56de 0；\u5931\u8d25\u8fd4\u56de\u975e 0 \u9519\u8bef\u7801（\u5982 EBUSY \u8868\u793a\u9501\u4ecd\u88ab\u7ebf\u7a0b\u6301\u6709）\u3002<\/td>\n<\/tr>\n
                \u6ce8\u610f<\/td>\n\u4e0d\u80fd\u9500\u6bc1\u6b63\u5728\u88ab\u5176\u4ed6\u7ebf\u7a0b\u6301\u6709\u7684\u9501；\u9500\u6bc1\u540e\u4e0d\u80fd\u518d\u4f7f\u7528\u8be5\u9501，\u9664\u975e\u91cd\u65b0\u521d\u59cb\u5316\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                \n
                4. pthread_rwlock_rdlock() \u2014\u2014 \u83b7\u53d6\u8bfb\u9501（\u5171\u4eab\u9501）<\/h5>\n

                int pthread_rwlock_rdlock(pthread_rwlock_t *rwlock);<\/p>\n\n\u9879\u8bf4\u660e<\/tr>\n\n\n\n\n\n
                \u529f\u80fd<\/td>\n\u83b7\u53d6\u8bfb\u9501（\u5171\u4eab\u9501），\u591a\u4e2a\u7ebf\u7a0b\u53ef\u540c\u65f6\u6301\u6709\u8bfb\u9501，\u5199\u9501\u4f1a\u88ab\u963b\u585e\u3002<\/td>\n<\/tr>\n
                \u53c2\u6570 rwlock<\/td>\n\u8f93\u5165\u8f93\u51fa\u53c2\u6570：\u6307\u5411\u8981\u83b7\u53d6\u8bfb\u9501\u7684 pthread_rwlock_t \u7c7b\u578b\u7684\u8bfb\u5199\u9501\u6307\u9488\u3002<\/td>\n<\/tr>\n
                \u8fd4\u56de\u503c<\/td>\n\u6210\u529f\u8fd4\u56de 0；\u5931\u8d25\u8fd4\u56de\u975e 0 \u9519\u8bef\u7801（\u5982 EDEADLK \u68c0\u6d4b\u5230\u6b7b\u9501）\u3002<\/td>\n<\/tr>\n
                \u6ce8\u610f<\/td>\n\u8bfb\u9501\u662f\u5171\u4eab\u7684，\u9002\u5408\u8bfb\u591a\u5199\u5c11\u7684\u573a\u666f；\u6301\u6709\u8bfb\u9501\u65f6\u4e0d\u80fd\u518d\u83b7\u53d6\u5199\u9501，\u5426\u5219\u4f1a\u5bfc\u81f4\u6b7b\u9501\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                \n
                5. pthread_rwlock_wrlock() \u2014\u2014 \u83b7\u53d6\u5199\u9501（\u72ec\u5360\u9501）<\/h5>\n

                int pthread_rwlock_wrlock(pthread_rwlock_t *rwlock);<\/p>\n\n\u9879\u8bf4\u660e<\/tr>\n\n\n\n\n\n
                \u529f\u80fd<\/td>\n\u83b7\u53d6\u5199\u9501（\u72ec\u5360\u9501），\u5199\u9501\u6301\u6709\u671f\u95f4，\u6240\u6709\u8bfb\u9501\u548c\u5199\u9501\u8bf7\u6c42\u90fd\u4f1a\u88ab\u963b\u585e\u3002<\/td>\n<\/tr>\n
                \u53c2\u6570 rwlock<\/td>\n\u8f93\u5165\u8f93\u51fa\u53c2\u6570：\u6307\u5411\u8981\u83b7\u53d6\u5199\u9501\u7684 pthread_rwlock_t \u7c7b\u578b\u7684\u8bfb\u5199\u9501\u6307\u9488\u3002<\/td>\n<\/tr>\n
                \u8fd4\u56de\u503c<\/td>\n\u6210\u529f\u8fd4\u56de 0；\u5931\u8d25\u8fd4\u56de\u975e 0 \u9519\u8bef\u7801（\u5982 EDEADLK \u68c0\u6d4b\u5230\u6b7b\u9501）\u3002<\/td>\n<\/tr>\n
                \u6ce8\u610f<\/td>\n\u5199\u9501\u662f\u72ec\u5360\u7684，\u6301\u6709\u5199\u9501\u65f6\u4e0d\u80fd\u518d\u83b7\u53d6\u8bfb\u9501\u6216\u5199\u9501，\u5426\u5219\u4f1a\u5bfc\u81f4\u6b7b\u9501；\u5199\u9501\u6301\u6709\u65f6\u95f4\u5e94\u5c3d\u91cf\u77ed\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                \n
                6. pthread_rwlock_unlock() \u2014\u2014 \u91ca\u653e\u8bfb\u5199\u9501<\/h5>\n<\/p>\n

                int pthread_rwlock_unlock(pthread_rwlock_t *rwlock);<\/p>\n\n\u9879\u8bf4\u660e<\/tr>\n\n\n\n\n\n
                \u529f\u80fd<\/td>\n\u91ca\u653e\u8bfb\u9501\u6216\u5199\u9501，\u5fc5\u987b\u7531\u6301\u6709\u9501\u7684\u7ebf\u7a0b\u8c03\u7528\u3002<\/td>\n<\/tr>\n
                \u53c2\u6570 rwlock<\/td>\n\u8f93\u5165\u8f93\u51fa\u53c2\u6570：\u6307\u5411\u8981\u89e3\u9501\u7684 pthread_rwlock_t \u7c7b\u578b\u7684\u8bfb\u5199\u9501\u6307\u9488\u3002<\/td>\n<\/tr>\n
                \u8fd4\u56de\u503c<\/td>\n\u6210\u529f\u8fd4\u56de 0；\u5931\u8d25\u8fd4\u56de\u975e 0 \u9519\u8bef\u7801（\u5982 EPERM \u8868\u793a\u8c03\u7528\u7ebf\u7a0b\u4e0d\u6301\u6709\u8be5\u9501）\u3002<\/td>\n<\/tr>\n
                \u6ce8\u610f<\/td>\n\u672a\u6301\u6709\u9501\u7684\u7ebf\u7a0b\u8c03\u7528\u89e3\u9501\u4f1a\u5bfc\u81f4\u672a\u5b9a\u4e49\u884c\u4e3a（\u5982\u7a0b\u5e8f\u5d29\u6e83）；\u89e3\u9501\u540e\u5176\u4ed6\u7ebf\u7a0b\u53ef\u7ade\u4e89\u83b7\u53d6\u9501\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                \n

                #include <iostream>
                \n#include <pthread.h>
                \n#include <unistd.h>
                \n#include <vector>
                \n#include <cstdlib>
                \n#include <ctime><\/p>\n

                \/\/ \u5171\u4eab\u8d44\u6e90
                \nint shared_data = 0;<\/p>\n

                \/\/ \u8bfb\u5199\u9501
                \npthread_rwlock_t rwlock;<\/p>\n

                \/\/ \u8bfb\u8005\u7ebf\u7a0b\u51fd\u6570
                \nvoid *Reader(void *arg)
                \n{
                \n \/\/sleep(1); \/\/\u8bfb\u8005\u4f18\u5148，\u4e00\u65e6\u8bfb\u8005\u8fdb\u5165&&\u8bfb\u8005\u5f88\u591a，\u5199\u8005\u57fa\u672c\u5c31\u5f88\u96be\u8fdb\u5165\u4e86
                \n int number = *(int *)arg;
                \n while (true)
                \n {
                \n pthread_rwlock_rdlock(&rwlock); \/\/ \u8bfb\u8005\u52a0\u9501
                \n std::cout << "\u8bfb\u8005-" << number << " \u6b63\u5728\u8bfb\u53d6\u6570\u636e，\u6570\u636e\u662f: " << shared_data << std::endl;
                \n sleep(1); \/\/ \u6a21\u62df\u8bfb\u53d6\u64cd\u4f5c
                \n pthread_rwlock_unlock(&rwlock); \/\/ \u89e3\u9501
                \n }
                \n delete (int*)arg;
                \n return NULL;
                \n}<\/p>\n

                \/\/ \u5199\u8005\u7ebf\u7a0b\u51fd\u6570
                \nvoid *Writer(void *arg)
                \n{
                \n int number = *(int *)arg;
                \n while (true)
                \n {
                \n pthread_rwlock_wrlock(&rwlock); \/\/ \u5199\u8005\u52a0\u9501
                \n shared_data = rand() % 100; \/\/ \u4fee\u6539\u5171\u4eab\u6570\u636e
                \n std::cout << "\u5199\u8005- " << number << " \u6b63\u5728\u5199\u5165\u3002\u65b0\u7684\u6570\u636e\u662f: " << shared_data << std::endl;
                \n sleep(2); \/\/ \u6a21\u62df\u5199\u5165\u64cd\u4f5c
                \n pthread_rwlock_unlock(&rwlock); \/\/ \u89e3\u9501
                \n }
                \n delete (int*)arg;
                \n return NULL;
                \n}<\/p>\n

                int main()
                \n{
                \n srand(time(nullptr)^getpid());
                \n pthread_rwlock_init(&rwlock, NULL); \/\/ \u521d\u59cb\u5316\u8bfb\u5199\u9501<\/p>\n

                \/\/ \u53ef\u4ee5\u66f4\u9ad8\u8bfb\u5199\u6570\u91cf\u914d\u6bd4，\u89c2\u5bdf\u73b0\u8c61
                \n const int reader_num = 2;
                \n const int writer_num = 2;
                \n const int total = reader_num + writer_num;
                \n pthread_t threads[total]; \/\/ \u5047\u8bbe\u8bfb\u8005\u548c\u5199\u8005\u6570\u91cf\u76f8\u7b49<\/p>\n

                \/\/ \u521b\u5efa\u8bfb\u8005\u7ebf\u7a0b
                \n for (int i = 0; i < reader_num; ++i)
                \n {
                \n int *id = new int(i);
                \n pthread_create(&threads[i], NULL, Reader, id);
                \n }<\/p>\n

                \/\/ \u521b\u5efa\u5199\u8005\u7ebf\u7a0b
                \n for (int i = reader_num; i < total; ++i)
                \n {
                \n int *id = new int(i – reader_num);
                \n pthread_create(&threads[i], NULL, Writer, id);
                \n }<\/p>\n

                \/\/ \u7b49\u5f85\u6240\u6709\u7ebf\u7a0b\u5b8c\u6210
                \n for (int i = 0; i < total; ++i)
                \n {
                \n pthread_join(threads[i], NULL);
                \n }<\/p>\n

                pthread_rwlock_destroy(&rwlock); \/\/ \u9500\u6bc1\u8bfb\u5199\u9501<\/p>\n

                return 0;
                \n}<\/p>\n

                \"\"<\/p>\n

                \u8bfb\u8005\u4f18\u5148（<\/span>Reader-Preference<\/span>） <\/span><\/p>\n

                \u5728\u8fd9\u79cd\u7b56\u7565\u4e2d，\u7cfb\u7edf\u4f1a\u5c3d\u53ef\u80fd\u591a\u5730\u5141\u8bb8\u591a\u4e2a\u8bfb\u8005\u540c\u65f6\u8bbf\u95ee\u8d44\u6e90（\u6bd4\u5982\u5171\u4eab\u6587\u4ef6\u6216\u6570 <\/span><\/p>\n

                \u636e），\u800c\u4e0d\u4f1a\u4f18\u5148\u8003\u8651\u5199\u8005\u3002\u8fd9\u610f\u5473\u7740\u5f53\u6709\u8bfb\u8005\u6b63\u5728\u8bfb\u53d6\u65f6，\u65b0\u5230\u8fbe\u7684\u8bfb\u8005\u4f1a\u7acb\u5373\u88ab <\/span><\/p>\n

                \u5141\u8bb8\u8fdb\u5165\u8bfb\u53d6\u533a，\u800c\u5199\u8005\u5219\u4f1a\u88ab\u963b\u585e，\u76f4\u5230\u6240\u6709\u8bfb\u8005\u90fd\u79bb\u5f00\u8bfb\u53d6\u533a\u3002\u8bfb\u8005\u4f18\u5148\u7b56\u7565\u53ef <\/span><\/p>\n

                \u80fd\u4f1a\u5bfc\u81f4\u5199\u8005\u9965\u997f（\u5373\u5199\u8005\u957f\u65f6\u95f4\u65e0\u6cd5\u83b7\u5f97\u5199\u5165\u6743\u9650），\u7279\u522b\u662f\u5f53\u8bfb\u8005\u9891\u7e41\u5230\u8fbe\u65f6\u3002 <\/span><\/p>\n

                \u5199\u8005\u4f18\u5148（<\/span>Writer-Preference<\/span>） <\/span><\/p>\n

                \u5728\u8fd9\u79cd\u7b56\u7565\u4e2d，\u7cfb\u7edf\u4f1a\u4f18\u5148\u8003\u8651\u5199\u8005\u3002\u5f53\u5199\u8005\u8bf7\u6c42\u5199\u5165\u6743\u9650\u65f6，\u7cfb\u7edf\u4f1a\u5c3d\u5feb\u5730\u8ba9\u5199\u8005 <\/span><\/p>\n

                \u8fdb\u5165\u5199\u5165\u533a，\u5373\u4f7f\u6b64\u65f6\u6709\u8bfb\u8005\u6b63\u5728\u8bfb\u53d6\u3002\u8fd9\u901a\u5e38\u610f\u5473\u7740\u4e00\u65e6\u6709\u5199\u8005\u5230\u8fbe，\u6240\u6709\u540e\u7eed\u7684 <\/span><\/p>\n

                \u8bfb\u8005\u90fd\u4f1a\u88ab\u963b\u585e，\u76f4\u5230\u5199\u8005\u5b8c\u6210\u5199\u5165\u5e76\u79bb\u5f00\u5199\u5165\u533a\u3002\u5199\u8005\u4f18\u5148\u7b56\u7565\u53ef\u4ee5\u51cf\u5c11\u5199\u8005\u7b49\u5f85 <\/span><\/p>\n

                \u7684\u65f6\u95f4，\u4f46\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8bfb\u8005\u9965\u997f（\u5373\u8bfb\u8005\u957f\u65f6\u95f4\u65e0\u6cd5\u83b7\u5f97\u8bfb\u53d6\u6743\u9650），\u7279\u522b\u662f\u5f53\u5199\u8005 <\/span><\/p>\n

                \u9891\u7e41\u5230\u8fbe\u65f6\u3002 <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

                netstat netstat \u662f\u4e00\u4e2a\u7528\u6765\u67e5\u770b\u7f51\u7edc\u72b6\u6001\u7684\u91cd\u8981\u5de5\u5177. \u8bed\u6cd5：netstat [\u9009\u9879] \u529f\u80fd：\u67e5\u770b\u7f51\u7edc\u72b6\u6001 \u5e38\u7528\u9009\u9879： \u2022 n \u62d2\u7edd\u663e\u793a\u522b\u540d，\u80fd\u663e\u793a\u6570\u5b57\u7684\u5168\u90e8\u8f6c\u5316\u6210\u6570\u5b57 \u2022 l \u4ec5\u5217\u51fa\u6709\u5728 Listen (\u76d1\u542c) \u7684\u670d\u52d9\u72b6\u6001 \u2022 p \u663e\u793a\u5efa\u7acb\u76f8\u5173\u94fe\u63a5\u7684\u7a0b\u5e8f\u540d \u2022 t (tcp)\u4ec5\u663e\u793a tcp \u76f8\u5173\u9009\u9879 \u2022 u (udp)\u4ec5\u663e\u793a udp \u76f8\u5173\u9009\u9879 \u2022 a (all)\u663e\u793a\u6240\u6709\u9009\u9879，\u9ed8\u8ba4\u4e0d\u663e\u793a LIS<\/p>\n","protected":false},"author":2,"featured_media":78338,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,78],"topic":[],"class_list":["post-78344","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-linux","tag-78"],"yoast_head":"\nLinux \u7f51\u7edc (7) - 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