linux-C子进程退出信号

开源中国

发表于 2014-09-04 21:18:28

#include <stdio.h>#include <unistd.h>#include <sys/types.h>#include <sys/wait.h>#include <signal.h>void signal_hander(){//处理子进程退出信号 int child_status;wait(&child_status); printf("child exited.n");}int main(int argc,char **argv){//进程 pid_t pid; int child_status;signal(SIGCHLD,signal_hander); if ((pid=fork())==0){ printf("child process run!n");exit(0);}else{ printf("parent process run!n");sleep(10);}exit(0);}

 deepfuture-lx@deepfuture-lx-desktop:/media/LX/deepfuture$ gcc -o test10 test10.ctest10.c: In function ‘main’:

test10.c:20: warning: incompatible implicit declaration of built-in function ‘exit’

test10.c:26: warning: incompatible implicit declaration of built-in function ‘exit’

deepfuture-lx@deepfuture-lx-desktop:/media/LX/deepfuture$ ./test1

0parent process run!

child process run!

child exited.