pthread_cond_timedwait 应用

#include 
#include 
#define NET_IDEL_INTERVAL_SEC		3
#define NET_IDEL_INTERVAL_NSEC		0

pthread_mutex_t net_call_mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t net_call_cond = PTHREAD_COND_INITIALIZER;
void wait_net_call(void)
{
	struct timespec tv;

	clock_gettime(CLOCK_REALTIME, &tv);
	tv.tv_sec += NET_IDEL_INTERVAL_SEC;
	tv.tv_nsec += NET_IDEL_INTERVAL_NSEC;
	pthread_mutex_lock(&net_call_mutex);
	
	pthread_cond_timedwait(&net_call_cond, &net_call_mutex, &tv);
	pthread_mutex_unlock(&net_call_mutex);
}

void signal_net_call(void)
{
	/* DBG("Send a net call!\n"); */
	pthread_mutex_lock(&net_call_mutex);
	pthread_cond_signal(&net_call_cond);
	pthread_mutex_unlock(&net_call_mutex);
}

void aa()
{
	for(;;)
	{
		printf("111111111111111111111111111\n");
		wait_net_call();
	}
}

int main()
{
	pthread_t id1;
	int ret;
	ret = pthread_create(&id1, NULL, (void *)aa, (void *)1);
    if (0 != ret)
    {
		printf("thread 1 create failed!\n");
		return 1;
    }
	for(;;)
	{
		sleep(1);
		printf("send-net-call\n");
		signal_net_call();
	}
}

signal_net_call() 为停止此次定时器函数；调用会运行pthread_cond_timedwait下面的函数。