waitpid_example.c

来自「linux下的程序开发（C语言实现）：本程序主要实现linux下进程的管理」· C语言 代码 · 共 30 行

#include<stdio.h>
#include<sys/wait.h>
#include<sys/types.h>
#include<unistd.h>
#include<sys/errno.h>
#include<stdlib.h>

extern int errno;
int main(int argc,char *argv[])
{
	pid_t pid_one,pid_wait;
	int status;
	if((pid_one=fork())==-1)
		perror("fork");
	if(pid_one==0)
	{
		printf("my pid is %d\n",getpid());
		sleep(1);
		exit(EXIT_SUCCESS);
	}
	
	pid_wait=waitpid(pid_one,&status,0);
	if(WIFEXITED(status))
			printf("wait on pid:%d,return value is:%4x\n",pid_wait,WEXITSTATUS(status));
		else if(WIFSIGNALED(status))
			printf("wait on pid:%d,return value is:%4x\n",pid_wait,WIFSIGNALED(status));
	
	return 0;
}