2.c

来自「Linux网络编程PPT和源码,供学习参考」· C语言 代码 · 共 32 行

#include <signal.h>
#include <unistd.h>
#include <sys/types.h>

void sig_handle(int signum,siginfo_t *sig_info,void *other)
{
	printf("signal num is %d\n",signum);
}

int main(int argc,char *argv[])
{
	pid_t child;
	child=fork();
	if(child==0)
	{
		struct sigaction sig;
		sig.sa_sigaction=sig_handle;
		sig.sa_flags=SA_SIGINFO;
		sigaction(SIGUSR2,&sig,NULL);
		while(1)
		{
			sleep(1);
		}
		exit(0);
	}
	union sigval sig_val;
	sig_val.sival_int=100;
	sigqueue(child,SIGUSR2,sig_val);
	
	return 0;
}