Function async_usleep

modules/cfgutils/cfgutils.c:567–599

static int async_usleep(struct sip_msg* msg, async_ctx *ctx, int *useconds)
{
	struct itimerspec its;
	int fd;

	LM_DBG("sleep %d useconds\n", *(unsigned int *)useconds);

	/* create the timer fd */
	if ( (fd=timerfd_create( CLOCK_REALTIME, 0))<0 ) {
		LM_ERR("failed to create new timer FD (%d) <%s>\n",
			errno, strerror(errno));
		return -1;
	}

	/* set the time */
	its.it_value.tv_sec = (*(unsigned int *)useconds / 1000000);
	its.it_value.tv_nsec = (*(unsigned int *)useconds % 1000000) * 1000;
	its.it_interval.tv_sec = 0;
	its.it_interval.tv_nsec = 0;
	if (timerfd_settime( fd, 0, &its, NULL)<0) {
		LM_ERR("failed to set timer FD (%d) <%s>\n",
			errno, strerror(errno));
		return -1;
	}

	/* start the async wait */
	ctx->resume_param = (void*)(unsigned long)
		(((unsigned long)-1) & (get_uticks()+*(unsigned int *)useconds));
	ASYNC_SET_RESUME_F(ctx, resume_async_sleep);
	async_status = fd;

	return 1;
}
#endif