阻塞型通信程序

#include"stdio.h"
#include"unistd.h"
#include"sys/types.h"
#include"signal.h"
#include"wait.h"

voidsigchld_handler(intsig)
{
pid_tpid;
intstatus;
for(;(pid=waitpid(-1,&status,WNOHANG))>0;)
{
printf("child%ddied:%d\n",pid,WEXITSTATUS(status));
printf("hi,parentprocessreceivedSIHHLDsignalsuccessfully!\n");
}
return;
}

voidmain()
{
//pid_tpc,pr;
intpc=fork();
if(pc==0)
{
printf("子进程！\n");
sleep(1);
printf("Thisischildprocesswithpidof%d\n",getpid());
//exit(1);
}
elseif(pc>0)
{
signal(SIGCHLD,sigchld_handler);
pause();
}
else
{
printf("创建进程出错！\n");
exit(1);
}
}

本文出自 “阿凡达” 博客，请务必保留此出处http://shamrock.blog.51cto.com/2079212/702521