linux c获取进程状态,Linux C 获取进程的退出值

如以下代码所示:

/*****************************************************************************

* Copyright : All Rights Reserved.

*

* Date : 2013-03-14 15:11:48

* Author/Corporation : Dengzhaoqun

* Email : dengzhaoqun@163.com

*****************************************************************************/

#include

#include

#include

#include

#include

#include

#include

int main(int argc, char *argv[])

{

pid_t pid;

int stat;

int exit_code;

pid = fork();

if(pid == 0)

{

sleep(3);

exit(5);

}

else if( pid < 0 )

{

fprintf(stderr, "fork failed: %s", strerror(errno));

return -1;

}

wait(&stat);// 等待一个子进程结束

if(WIFEXITED(stat))// 如果子进程通过 return, exit, _exit 正常结束, WIFEXITED() 返回 true

{

exit_code = WEXITSTATUS(stat);

printf("child's exit_code: %dn", exit_code);

}

return 0;

}参考:  "man 2 wait"