#include <stdlib.h>
#include <pthread.h>
#include <signal.h>
#include <stdio.h>

void sig(int sig)
{
	printf("get sig is %d %lx\n", sig,pthread_self());
}

void *f1(void *arg) 
{
	printf("my %s id is %lx\n",__FUNCTION__,pthread_self());
	while(1) sleep(1);
}
void *f2(void *arg) 
{
	printf("my %s id is %lx\n",__FUNCTION__,pthread_self());

	sigset_t set;
	sigemptyset(&set);
	sigaddset(&set, SIGINT);
	pthread_sigmask(SIG_UNBLOCK, &set, NULL);
	
	while(1) sleep(1);
}

int main(int argc, char** argv) 
{
	printf("my %s id is %lx\n",__FUNCTION__,pthread_self());
	pthread_t thread1;
	pthread_t thread2;

	// set signal handle
	struct sigaction action;
	action.sa_handler = sig;
	action.sa_flags = 0;
	sigemptyset(&action.sa_mask);
	sigaction(SIGINT, &action, NULL);

	// block signal whole process
	sigset_t set;
	sigemptyset(&set);
	sigaddset(&set, SIGINT);
	sigprocmask(SIG_BLOCK,&set,NULL);

	// create two thread
	pthread_create(&thread1, NULL, f1, NULL);
	pthread_create(&thread2, NULL, f2, NULL);

	while(1) sleep(1);
	return 0;
}