mirror of
https://github.com/riba2534/TCP-IP-NetworkNote.git
synced 2026-02-02 17:48:55 +08:00
29 lines
594 B
C
29 lines
594 B
C
#include <stdio.h>
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#include <unistd.h>
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#include <sys/wait.h>
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int main(int argc, char *argv[])
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{
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int status;
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pid_t pid = fork();
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if (pid == 0)
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{
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sleep(15); //用 sleep 推迟子进程的执行
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return 24;
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}
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else
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{
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//调用waitpid 传递参数 WNOHANG ，这样之前有没有终止的子进程则返回0
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while (!waitpid(-1, &status, WNOHANG))
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{
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sleep(3);
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puts("sleep 3 sec.");
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}
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if (WIFEXITED(status))
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printf("Child send %d \n", WEXITSTATUS(status));
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}
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return 0;
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}
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