sigextrainforecive.c

关于进程间通信的代码集锦

#include <signal.h>
#include <sys/types.h>
#include <unistd.h>
void new_op(int,siginfo_t*,void *);
int main(int argc,char** argv)
{
	struct sigaction act;
	int sig;
	pid_t pid;
	
	sig=atoi(argv[1]);	
	pid=getpid();

	sigemptyset(&act.sa_mask);
	act.sa_flags=SA_SIGINFO;
	act.sa_sigaction=new_op;

	if(sigaction(sig,&act,NULL)<0)
	{
		printf("install sigal error\n");
	}
	while(1)
	{
		sleep(2);
		printf("wait for the signal\n");
	}

	return 0;
}
void new_op(int signum,siginfo_t* info,void* myact)
{
	printf("the int value is %d\n",info->si_int);
}