{"id":119212,"date":"2026-10-29T03:48:26","date_gmt":"2026-10-28T19:48:26","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/119212.html"},"modified":"2026-10-29T03:48:26","modified_gmt":"2026-10-28T19:48:26","slug":"linux%e8%bf%9b%e7%a8%8b%e6%a0%b8%e5%bf%83%e8%80%83%e7%82%b9%e7%b2%be%e8%a6%81","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/119212.html","title":{"rendered":"Linux\u8fdb\u7a0b\u6838\u5fc3\u8003\u70b9\u7cbe\u8981"},"content":{"rendered":"

Linux \u8fdb\u7a0b\u6838\u5fc3\u8003\u70b9\u4e0e\u5b9e\u6218\u7b14\u8bb0（\u5d4c\u5165\u5f0f\/\u540e\u53f0\u9762\u8bd5\u5411）<\/h2>\n

\u4e00\u3001\u8fdb\u7a0b\u672c\u8d28\u4e0e PCB \u7ba1\u7406<\/h3>\n

\u8fdb\u7a0b\u662f\u7a0b\u5e8f\u7684\u4e00\u6b21\u52a8\u6001\u6267\u884c\u8fc7\u7a0b，\u533a\u522b\u4e8e\u78c1\u76d8\u4e0a\u9759\u6001\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6（\u5982 a.out）\u3002\u64cd\u4f5c\u7cfb\u7edf\u901a\u8fc7\u8fdb\u7a0b\u63a7\u5236\u5757（PCB）（Linux \u4e2d\u4e3a task_struct \u7ed3\u6784\u4f53）\u5bf9\u8fdb\u7a0b\u8fdb\u884c\u5168\u751f\u547d\u5468\u671f\u7ba1\u7406 \u3002<\/p>\n\n\u6838\u5fc3\u8981\u7d20\u8bf4\u660e\u9762\u8bd5\u5173\u952e\u70b9<\/tr>\n\n\n\n\n\n\n
PID<\/td>\n\u8fdb\u7a0b\u552f\u4e00\u6807\u8bc6\u7b26<\/td>\n\u5168\u5c40\u552f\u4e00，\u56de\u6536\u540e\u53ef\u80fd\u590d\u7528<\/td>\n<\/tr>\n
\u8d44\u6e90\u63cf\u8ff0<\/td>\n\u6253\u5f00\u6587\u4ef6\u63cf\u8ff0\u7b26\u8868\u3001\u5185\u5b58\u6620\u5c04\u3001IO \u8bbe\u5907<\/td>\n\u6587\u4ef6\u63cf\u8ff0\u7b26\u7ee7\u627f\u673a\u5236<\/td>\n<\/tr>\n
\u8c03\u5ea6\u4fe1\u606f<\/td>\n\u4f18\u5148\u7ea7\u3001\u72b6\u6001\u3001\u65f6\u95f4\u7247\u7edf\u8ba1<\/td>\nCFS \u8c03\u5ea6\u7b97\u6cd5\u57fa\u7840<\/td>\n<\/tr>\n
\u4e0a\u4e0b\u6587<\/td>\n\u5bc4\u5b58\u5668\u503c\u3001\u6808\u6307\u9488\u3001\u7a0b\u5e8f\u8ba1\u6570\u5668<\/td>\n\u8fdb\u7a0b\u5207\u6362\u65f6\u7684\u4fdd\u5b58\u4e0e\u6062\u590d<\/td>\n<\/tr>\n
\u6743\u9650\u63a7\u5236<\/td>\nUID\/GID\u3001umask \u63a9\u7801<\/td>\n\u5b89\u5168\u6027\u4e0e\u6587\u4ef6\u8bbf\u95ee\u63a7\u5236<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5e76\u53d1 vs \u5e76\u884c：<\/p>\n

    \n
  • \u5e76\u53d1 (Concurrency)：\u5355\u6838 CPU \u901a\u8fc7\u65f6\u95f4\u7247\u8f6e\u8f6c\u5feb\u901f\u5207\u6362\u4efb\u52a1，\u5b8f\u89c2\u201c\u540c\u65f6\u201d，\u5fae\u89c2\u4e32\u884c\u3002<\/li>\n
  • \u5e76\u884c (Parallelism)：\u591a\u6838 CPU \u591a\u4e2a\u4efb\u52a1\u5728\u4e0d\u540c\u6838\u5fc3\u4e0a\u771f\u6b63\u540c\u65f6\u6267\u884c \u3002<\/li>\n<\/ul>\n

    \u4e8c\u3001\u865a\u62df\u5185\u5b58\u5206\u5e03（32 \u4f4d\u6a21\u578b）<\/h3>\n

    32 \u4f4d\u7cfb\u7edf\u4e0b，4GB \u5730\u5740\u7a7a\u95f4\u901a\u5e38\u5212\u5206\u4e3a 3GB \u7528\u6237\u7a7a\u95f4 + 1GB \u5185\u6838\u7a7a\u95f4\u3002<\/p>\n

    \u9ad8\u5730\u5740
    \n+——————+
    \n| \u5185\u6838\u7a7a\u95f4 (1G) | <— \u7528\u6237\u6001\u4e0d\u53ef\u76f4\u63a5\u8bbf\u95ee
    \n+——————+
    \n| \u6808 | <— \u5411\u4e0b\u589e\u957f (\u9ed8\u8ba4 8M, ulimit -s)
    \n+——————+
    \n| \u5171\u4eab\u5e93\/mmap \u533a | <— \u52a8\u6001\u5e93\u3001\u6587\u4ef6\u6620\u5c04
    \n+——————+
    \n| \u5806 | <— \u5411\u4e0a\u589e\u957f (malloc\/free)
    \n+——————+
    \n| \u6570\u636e\u6bb5 (BSS) | <— \u672a\u521d\u59cb\u5316\u5168\u5c40\/\u9759\u6001\u53d8\u91cf
    \n+——————+
    \n| \u6570\u636e\u6bb5 (Data) | <— \u5df2\u521d\u59cb\u5316\u5168\u5c40\/\u9759\u6001\u53d8\u91cf
    \n+——————+
    \n| \u4ee3\u7801\u6bb5 (Text) | <— \u53ea\u8bfb\u6307\u4ee4
    \n+——————+
    \n\u4f4e\u5730\u5740<\/p>\n

    \u8d44\u6e90\u9650\u5236\u67e5\u770b： \u4f7f\u7528 ulimit -a \u67e5\u770b\u8fdb\u7a0b\u8d44\u6e90\u7ea6\u675f，\u5d4c\u5165\u5f0f\u5f00\u53d1\u9700\u91cd\u70b9\u5173\u6ce8：<\/p>\n

      \n
    • open files (-n)：\u9ed8\u8ba4 1024，\u9ad8\u5e76\u53d1\u670d\u52a1\u5668\u9700\u8c03\u5927\u3002<\/li>\n
    • stack size (-s)：\u9ed8\u8ba4 8192KB，\u9012\u5f52\u8fc7\u6df1\u6613\u5bfc\u81f4 Stack Overflow \u3002<\/li>\n<\/ul>\n

      \u4e09\u3001fork() \u673a\u5236\u4e0e\u5199\u65f6\u590d\u5236 (COW)<\/h3>\n

      fork() \u662f Linux \u521b\u5efa\u8fdb\u7a0b\u7684\u6838\u5fc3\u7cfb\u7edf\u8c03\u7528，\u5176\u7279\u6027\u4e3a**\u201c\u4e00\u6b21\u8c03\u7528，\u4e24\u6b21\u8fd4\u56de\u201d**\u3002<\/p>\n

      1. \u8fd4\u56de\u503c\u903b\u8f91<\/h4>\n

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

      int main() {
      \n pid_t pid = fork();<\/p>\n

      if (pid < 0) {
      \n \/\/ \u521b\u5efa\u5931\u8d25
      \n perror("fork failed");
      \n exit(1);
      \n } else if (pid == 0) {
      \n \/\/ \u5b50\u8fdb\u7a0b\u903b\u8f91
      \n printf("Child Process: PID=%d, PPID=%d
      \n", getpid(), getppid());
      \n exit(0);
      \n } else {
      \n \/\/ \u7236\u8fdb\u7a0b\u903b\u8f91 printf("Parent Process: PID=%d, Child_PID=%d
      \n", getpid(), pid);
      \n \/\/ \u5fc5\u987b\u56de\u6536\u5b50\u8fdb\u7a0b，\u9632\u6b62\u50f5\u5c38
      \n wait(NULL);
      \n }
      \n return 0;
      \n}<\/p>\n

      2. \u6838\u5fc3\u7279\u6027\u89e3\u6790<\/h4>\n
        \n
      • \u4ee3\u7801\u6267\u884c\u70b9：\u5b50\u8fdb\u7a0b\u4ece fork() \u8fd4\u56de\u5904\u5f00\u59cb\u6267\u884c，\u800c\u975e\u91cd\u65b0\u8fd0\u884c main\u3002<\/li>\n
      • \u72ec\u7acb\u6027：\u7236\u5b50\u8fdb\u7a0b\u62e5\u6709\u72ec\u7acb\u7684 PID \u548c PCB，\u4f46\u521d\u59cb\u4ee3\u7801\u903b\u8f91\u76f8\u540c\u3002<\/li>\n
      • \u5199\u65f6\u590d\u5236 (Copy On Write)：\n
          \n
        • fork \u77ac\u95f4：\u7236\u5b50\u8fdb\u7a0b\u5171\u4eab\u7269\u7406\u5185\u5b58\u9875，\u5185\u6838\u5c06\u9875\u9762\u6807\u8bb0\u4e3a\u53ea\u8bfb\u3002<\/li>\n
        • \u4fee\u6539\u53d1\u751f\u65f6：\u82e5\u4efb\u610f\u4e00\u65b9\u5c1d\u8bd5\u5199\u5165，\u5185\u6838\u89e6\u53d1\u7f3a\u9875\u5f02\u5e38，\u5355\u72ec\u62f7\u8d1d\u4e00\u4efd\u7269\u7406\u5185\u5b58\u7ed9\u4fee\u6539\u65b9，\u5b9e\u73b0\u5ef6\u8fdf\u62f7\u8d1d，\u6781\u5927\u964d\u4f4e\u5f00\u9500 \u3002<\/li>\n<\/ul>\n<\/li>\n
        • \u8c03\u5ea6\u4e0d\u786e\u5b9a\u6027：\u7236\u5b50\u8fdb\u7a0b\u8c01\u5148\u8fd0\u884c\u7531\u5185\u6838\u8c03\u5ea6\u5668\u51b3\u5b9a，\u4e0d\u53ef\u5047\u8bbe\u987a\u5e8f\u3002<\/li>\n<\/ul>\n

          \u56db\u3001\u8fdb\u7a0b\u72b6\u6001\u6d41\u8f6c\u4e0e\u7279\u6b8a\u5f62\u6001<\/h3>\n

          Linux \u8fdb\u7a0b\u72b6\u6001\u4e3b\u8981\u5305\u542b\u4ee5\u4e0b\u51e0\u79cd，\u5176\u4e2d Z \u6001 \u662f\u9762\u8bd5\u9ad8\u9891\u8003\u70b9\u3002<\/p>\n\n\u72b6\u6001\u7801\u72b6\u6001\u540d\u79f0\u542b\u4e49\u80fd\u5426\u88ab\u4fe1\u53f7\u5524\u9192<\/tr>\n\n\n\n\n\n\n
          R<\/td>\nRunning<\/td>\n\u6b63\u5728\u8fd0\u884c\u6216\u5728\u5c31\u7eea\u961f\u5217\u7b49\u5f85\u8c03\u5ea6<\/td>\nN\/A<\/td>\n<\/tr>\n
          S<\/td>\nInterruptible Sleep<\/td>\n\u53ef\u4e2d\u65ad\u7761\u7720，\u7b49\u5f85\u8d44\u6e90<\/td>\n\u80fd<\/td>\n<\/tr>\n
          D<\/td>\nUninterruptible Sleep<\/td>\n\u4e0d\u53ef\u4e2d\u65ad\u7761\u7720，\u901a\u5e38\u5728\u7b49\u5f85 IO<\/td>\n\u4e0d\u80fd<\/td>\n<\/tr>\n
          T<\/td>\nStopped<\/td>\n\u6682\u505c\u6001，\u6536\u5230 SIGSTOP \u7b49\u4fe1\u53f7<\/td>\n\u80fd (SIGCONT)<\/td>\n<\/tr>\n
          Z<\/td>\nZombie<\/td>\n\u50f5\u6b7b\u6001，\u8fdb\u7a0b\u7ed3\u675f\u4f46 PCB \u672a\u56de\u6536<\/td>\n\u4e0d\u80fd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          \u91cd\u70b9\u8fa8\u6790：\u5b64\u513f\u8fdb\u7a0b vs \u50f5\u5c38\u8fdb\u7a0b<\/h4>\n
            \n
          • \u5b64\u513f\u8fdb\u7a0b (Orphan)：\u7236\u8fdb\u7a0b\u5148\u9000\u51fa，\u5b50\u8fdb\u7a0b\u4ecd\u5728\u8fd0\u884c\u3002\n
              \n
            • \u5904\u7406\u673a\u5236：\u88ab init (PID 1) \u6216 systemd \u8fdb\u7a0b\u6536\u517b，\u8d44\u6e90\u81ea\u52a8\u56de\u6536，\u65e0\u5bb3\u3002<\/li>\n<\/ul>\n<\/li>\n
            • \u50f5\u5c38\u8fdb\u7a0b (Zombie)：\u5b50\u8fdb\u7a0b\u5148\u9000\u51fa，\u7236\u8fdb\u7a0b\u672a\u8c03\u7528 wait\/waitpid \u56de\u6536\u3002\n
                \n
              • \u5371\u5bb3：\u7528\u6237\u7a7a\u95f4\u8d44\u6e90\u5df2\u91ca\u653e，\u4f46 PCB \u4ecd\u9a7b\u7559\u5185\u6838，\u5360\u7528\u5185\u6838\u5185\u5b58\u69fd\u4f4d\u3002\u5927\u91cf\u50f5\u5c38\u8fdb\u7a0b\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u521b\u5efa\u65b0\u8fdb\u7a0b \u3002<\/li>\n
              • \u89e3\u51b3：\u7236\u8fdb\u7a0b\u5fc5\u987b\u6b63\u786e\u5904\u7406\u4fe1\u53f7\u6216\u8c03\u7528 wait \u7cfb\u5217\u51fd\u6570；\u82e5\u7236\u8fdb\u7a0b\u50f5\u6b7b，\u9700\u6740\u6b7b\u7236\u8fdb\u7a0b\u8ba9 init \u6536\u517b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                \u4e94\u3001\u8fdb\u7a0b\u9000\u51fa\u7684 8 \u79cd\u65b9\u5f0f\u4e0e exit\/_exit \u533a\u522b<\/h3>\n

                \u8fdb\u7a0b\u7ec8\u6b62\u5206\u4e3a\u6b63\u5e38\u9000\u51fa\u3001\u7cfb\u7edf\u8c03\u7528\u9000\u51fa\u548c\u5f02\u5e38\u7ec8\u6b62\u3002<\/p>\n

                1. \u9000\u51fa\u65b9\u5f0f\u5206\u7c7b<\/h4>\n
                  \n
                • \u6b63\u5e38\u9000\u51fa：\n
                • main \u51fd\u6570 return\u3002<\/li>\n
                • exit()：C \u5e93\u51fd\u6570，\u6267\u884c\u6e05\u7406\u5de5\u4f5c\u3002<\/li>\n<\/li>\n<\/ul>\n
                • pthread_exit()：\u4e3b\u7ebf\u7a0b\u9000\u51fa\u3002<\/li>\n
                    \n
                  • \u7cfb\u7edf\u8c03\u7528\u9000\u51fa： 4. _exit() \/ _Exit()：\u76f4\u63a5\u9677\u5165\u5185\u6838，\u4e0d\u6267\u884c\u7528\u6237\u6001\u6e05\u7406\u3002<\/li>\n
                  • \u5f02\u5e38\u7ec8\u6b62： 5. abort()：\u53d1\u9001 SIGABRT \u4fe1\u53f7\u3002 6. \u4fe1\u53f7\u6740\u6b7b：kill \u547d\u4ee4\u6216\u4ee3\u7801\u89e6\u53d1 SIGKILL\/SIGTERM\u3002 7. \u7ebf\u7a0b\u53d6\u6d88：\u6700\u540e\u4e00\u4e2a\u7ebf\u7a0b\u88ab pthread_cancel\u3002<\/li>\n<\/ul>\n

                    2. \u6838\u5fc3\u9762\u8bd5\u9898：exit() vs _exit()<\/h4>\n\n\u7279\u6027exit()_exit() \/ _Exit()<\/tr>\n\n\n\n\n\n\n
                    \u5f52\u5c5e<\/td>\nC \u6807\u51c6\u5e93 (stdlib.h)<\/td>\n\u7cfb\u7edf\u8c03\u7528 (unistd.h)<\/td>\n<\/tr>\n
                    \u7f13\u51b2\u533a\u5904\u7406<\/td>\n\u5237\u65b0 stdio \u7f13\u51b2\u533a (fwrite \u5185\u5bb9\u5199\u5165\u6587\u4ef6)<\/td>\n\u4e0d\u5237\u65b0，\u76f4\u63a5\u4e22\u5f03\u7f13\u51b2\u533a\u6570\u636e<\/td>\n<\/tr>\n
                    \u6e05\u7406\u94a9\u5b50<\/td>\n\u6267\u884c atexit \u6ce8\u518c\u7684\u56de\u8c03\u51fd\u6570<\/td>\n\u4e0d\u6267\u884c\u4efb\u4f55\u6e05\u7406\u94a9\u5b50<\/td>\n<\/tr>\n
                    \u5e95\u5c42\u52a8\u4f5c<\/td>\n\u8c03\u7528 _exit() \u8fdb\u5165\u5185\u6838<\/td>\n\u76f4\u63a5\u8fdb\u5165\u5185\u6838\u91ca\u653e\u8d44\u6e90<\/td>\n<\/tr>\n
                    \u5e94\u7528\u573a\u666f<\/td>\n\u666e\u901a\u7a0b\u5e8f\u6b63\u5e38\u7ed3\u675f<\/td>\nfork \u540e\u7684\u5b50\u8fdb\u7a0b\u51fa\u9519\u9000\u51fa (\u907f\u514d\u91cd\u590d\u5237\u65b0\u7236\u8fdb\u7a0b\u7f13\u51b2\u533a)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                    \u4ee3\u7801\u793a\u4f8b：\u9a8c\u8bc1\u7f13\u51b2\u533a\u5dee\u5f02<\/p>\n

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

                    int main() {
                    \n printf("Before fork: This is in buffer
                    \n"); \/\/ \u6b64\u65f6\u6570\u636e\u5728\u7f13\u51b2\u533a，\u672a\u5199\u5165\u7ec8\u7aef<\/p>\n

                    pid_t pid = fork();<\/p>\n

                    if (pid == 0) {
                    \n \/\/ \u5b50\u8fdb\u7a0b：\u4f7f\u7528 _exit \u907f\u514d\u5237\u65b0\u7236\u8fdb\u7a0b\u7684\u7f13\u51b2\u533a，\u9632\u6b62\u8f93\u51fa\u91cd\u590d
                    \n _exit(0);
                    \n } else {
                    \n \/\/ \u7236\u8fdb\u7a0b：\u7b49\u5f85\u540e\u6b63\u5e38\u9000\u51fa，\u4f1a\u5237\u65b0\u7f13\u51b2\u533a
                    \n sleep(1); exit(0);
                    \n }
                    \n \/\/ \u82e5\u5b50\u8fdb\u7a0b\u4e5f\u7528 exit(0)，"Before fork…" \u4f1a\u88ab\u6253\u5370\u4e24\u6b21
                    \n}<\/p>\n

                    \u516d\u3001\u5e38\u7528\u8c03\u8bd5\u547d\u4ee4\u4e0e\u8c03\u5ea6\u7b97\u6cd5<\/h3>\n

                    1. \u5173\u952e\u547d\u4ee4<\/h4>\n
                      \n
                    • ps aux：\u9759\u6001\u5feb\u7167，\u67e5\u770b PID\u3001STAT (\u72b6\u6001)\u3001CMD\u3002<\/li>\n
                    • top：\u52a8\u6001\u76d1\u63a7，\u5b9e\u65f6\u67e5\u770b CPU\/Mem \u5360\u7528，\u6309 P \u6309 CPU \u6392\u5e8f，M \u6309\u5185\u5b58\u6392\u5e8f\u3002<\/li>\n
                    • pstree：\u6811\u72b6\u5c55\u793a\u8fdb\u7a0b\u7236\u5b50\u5173\u7cfb，\u5feb\u901f\u5b9a\u4f4d\u5b64\u513f\/\u50f5\u5c38\u94fe\u3002<\/li>\n
                    • kill -l：\u67e5\u770b\u6240\u6709\u53ef\u7528\u4fe1\u53f7\u5217\u8868\u3002<\/li>\n<\/ul>\n

                      2. Linux \u8c03\u5ea6\u7b56\u7565<\/h4>\n

                      \u73b0\u4ee3 Linux \u5185\u6838\u9ed8\u8ba4\u91c7\u7528 CFS (Completely Fair Scheduler，\u5b8c\u5168\u516c\u5e73\u8c03\u5ea6) \u7b97\u6cd5，\u53d6\u4ee3\u4e86\u65e9\u671f\u7684 O(1) \u8c03\u5ea6\u5668\u3002<\/p>\n

                        \n
                      • \u6838\u5fc3\u601d\u60f3：\u57fa\u4e8e\u7ea2\u9ed1\u6811\u7ef4\u62a4\u6240\u6709\u53ef\u8fd0\u884c\u8fdb\u7a0b，\u6839\u636e vruntime (\u865a\u62df\u8fd0\u884c\u65f6\u95f4) \u9009\u62e9\u6700\u5c0f\u8282\u70b9\u6267\u884c，\u786e\u4fdd\u6bcf\u4e2a\u8fdb\u7a0b\u83b7\u5f97\u516c\u5e73\u7684 CPU \u65f6\u95f4\u7247 \u3002<\/li>\n
                      • \u5176\u4ed6\u7b56\u7565：\u5b9e\u65f6\u8fdb\u7a0b\u53ef\u91c7\u7528 SCHED_FIFO (\u5148\u8fdb\u5148\u51fa) \u6216 SCHED_RR (\u65f6\u95f4\u7247\u8f6e\u8f6c)\u3002## \u4e03\u3001\u603b\u7ed3\u4e0e\u8fdb\u9636\u65b9\u5411 \u8fdb\u7a0b\u7ba1\u7406\u662f\u5d4c\u5165\u5f0f Linux \u4e0e\u540e\u53f0\u5f00\u53d1\u7684\u57fa\u77f3\u3002\u9762\u8bd5\u4e2d\u9700\u719f\u7ec3\u638c\u63e1：<\/li>\n<\/ul>\n
                      • fork \u7684 COW \u673a\u5236\u53ca\u5176\u5bf9\u6027\u80fd\u7684\u5f71\u54cd\u3002<\/li>\n
                      • \u50f5\u5c38\u8fdb\u7a0b\u7684\u4ea7\u751f\u539f\u7406\u53ca wait\/waitpid \u7684\u6b63\u786e\u7528\u6cd5\u3002<\/li>\n
                      • exit \u4e0e _exit \u7684\u5e95\u5c42\u533a\u522b（\u7f13\u51b2\u533a\u4e0e\u94a9\u5b50\u51fd\u6570）\u3002<\/li>\n
                      • \u8fdb\u7a0b\u72b6\u6001\u673a\u8f6c\u6362，\u7279\u522b\u662f D \u6001\u4e0e Z \u6001\u7684\u5904\u7406\u3002<\/li>\n

                        \u540e\u7eed\u5b66\u4e60\u8def\u7ebf：<\/p>\n

                          \n
                        • \u8fdb\u7a0b\u56de\u6536：\u6df1\u5165 waitpid \u9009\u9879\u4e0e\u975e\u963b\u585e\u56de\u6536\u3002<\/li>\n
                        • \u8fdb\u7a0b\u6620\u50cf\u66ff\u6362：exec \u65cf\u51fd\u6570 (execl, execvp \u7b49) \u7684\u4f7f\u7528\u573a\u666f\u3002<\/li>\n
                        • \u8fdb\u7a0b\u95f4\u901a\u4fe1 (IPC)：\u7ba1\u9053 (Pipe)\u3001\u6d88\u606f\u961f\u5217\u3001\u5171\u4eab\u5185\u5b58\u3001\u4fe1\u53f7\u91cf\u3002<\/li>\n<\/ul>\n
                          \n

                          \u53c2\u8003\u6765\u6e90<\/h3>\n
                            \n
                          • \u7f51\u6613\u540e\u7aef\u9762\u8bd5\u5168\u653b\u7565：\u4ece\u9ad8\u9891\u8003\u70b9\u5230\u5b9e\u6218\u65b9\u6848<\/li>\n
                          • \u8d1d\u58f3\u627e\u623fJava\u7b14\u8bd5\u5168\u89e3\u6790：\u8003\u70b9\u5206\u5e03\u3001OOM\u6392\u67e5\u4e0e\u6392\u5e8f\u7b97\u6cd5\u5b9e\u6218<\/li>\n<\/ul>\n

                            \u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"

                            Linux \u8fdb\u7a0b\u6838\u5fc3\u8003\u70b9\u4e0e\u5b9e\u6218\u7b14\u8bb0（\u5d4c\u5165\u5f0f\/\u540e\u53f0\u9762\u8bd5\u5411）
                            \n\u4e00\u3001\u8fdb\u7a0b\u672c\u8d28\u4e0e PCB \u7ba1\u7406
                            \n\u8fdb\u7a0b\u662f\u7a0b\u5e8f\u7684\u4e00\u6b21\u52a8\u6001\u6267\u884c\u8fc7\u7a0b，\u533a\u522b\u4e8e\u78c1\u76d8\u4e0a\u9759\u6001\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6（\u5982 a.out）\u3002\u64cd\u4f5c\u7cfb\u7edf\u901a\u8fc7\u8fdb\u7a0b\u63a7\u5236\u5757（PCB）（Linux \u4e2d\u4e3a task_struct \u7ed3\u6784\u4f53）\u5bf9\u8fdb\u7a0b\u8fdb\u884c\u5168\u751f\u547d\u5468\u671f\u7ba1\u7406 \u3002
                            \n\u6838\u5fc3\u8981\u7d20\u8bf4\u660e\u9762\u8bd5\u5173\u952e\u70b9PID\u8fdb\u7a0b\u552f\u4e00\u6807\u8bc6\u7b26\u5168\u5c40\u552f\u4e00，\u56de<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[174,58,103,148],"topic":[],"class_list":["post-119212","post","type-post","status-publish","format-standard","hentry","category-server","tag-c","tag-linux","tag-ubuntu","tag-visual-studio-code"],"yoast_head":"\nLinux\u8fdb\u7a0b\u6838\u5fc3\u8003\u70b9\u7cbe\u8981 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/119212.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Linux\u8fdb\u7a0b\u6838\u5fc3\u8003\u70b9\u7cbe\u8981 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"Linux \u8fdb\u7a0b\u6838\u5fc3\u8003\u70b9\u4e0e\u5b9e\u6218\u7b14\u8bb0（\u5d4c\u5165\u5f0f\/\u540e\u53f0\u9762\u8bd5\u5411） \u4e00\u3001\u8fdb\u7a0b\u672c\u8d28\u4e0e PCB \u7ba1\u7406 \u8fdb\u7a0b\u662f\u7a0b\u5e8f\u7684\u4e00\u6b21\u52a8\u6001\u6267\u884c\u8fc7\u7a0b，\u533a\u522b\u4e8e\u78c1\u76d8\u4e0a\u9759\u6001\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6（\u5982 a.out）\u3002\u64cd\u4f5c\u7cfb\u7edf\u901a\u8fc7\u8fdb\u7a0b\u63a7\u5236\u5757（PCB）（Linux \u4e2d\u4e3a task_struct \u7ed3\u6784\u4f53）\u5bf9\u8fdb\u7a0b\u8fdb\u884c\u5168\u751f\u547d\u5468\u671f\u7ba1\u7406 \u3002 \u6838\u5fc3\u8981\u7d20\u8bf4\u660e\u9762\u8bd5\u5173\u952e\u70b9PID\u8fdb\u7a0b\u552f\u4e00\u6807\u8bc6\u7b26\u5168\u5c40\u552f\u4e00，\u56de\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/119212.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-28T19:48:26+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/119212.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/119212.html\",\"name\":\"Linux\u8fdb\u7a0b\u6838\u5fc3\u8003\u70b9\u7cbe\u8981 - 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\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/119212.html","og_locale":"zh_CN","og_type":"article","og_title":"Linux\u8fdb\u7a0b\u6838\u5fc3\u8003\u70b9\u7cbe\u8981 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"Linux \u8fdb\u7a0b\u6838\u5fc3\u8003\u70b9\u4e0e\u5b9e\u6218\u7b14\u8bb0（\u5d4c\u5165\u5f0f\/\u540e\u53f0\u9762\u8bd5\u5411） \u4e00\u3001\u8fdb\u7a0b\u672c\u8d28\u4e0e PCB \u7ba1\u7406 \u8fdb\u7a0b\u662f\u7a0b\u5e8f\u7684\u4e00\u6b21\u52a8\u6001\u6267\u884c\u8fc7\u7a0b，\u533a\u522b\u4e8e\u78c1\u76d8\u4e0a\u9759\u6001\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6（\u5982 a.out）\u3002\u64cd\u4f5c\u7cfb\u7edf\u901a\u8fc7\u8fdb\u7a0b\u63a7\u5236\u5757（PCB）（Linux \u4e2d\u4e3a task_struct \u7ed3\u6784\u4f53）\u5bf9\u8fdb\u7a0b\u8fdb\u884c\u5168\u751f\u547d\u5468\u671f\u7ba1\u7406 \u3002 \u6838\u5fc3\u8981\u7d20\u8bf4\u660e\u9762\u8bd5\u5173\u952e\u70b9PID\u8fdb\u7a0b\u552f\u4e00\u6807\u8bc6\u7b26\u5168\u5c40\u552f\u4e00，\u56de","og_url":"https:\/\/www.wsisp.com\/helps\/119212.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-10-28T19:48:26+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"2 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/119212.html","url":"https:\/\/www.wsisp.com\/helps\/119212.html","name":"Linux\u8fdb\u7a0b\u6838\u5fc3\u8003\u70b9\u7cbe\u8981 - 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