Function WaitForCronTasks

src/backend/task/pg_cron.c:747–760

* WaitForCronTasks blocks waiting for any active task for at most * 1 second. */

 * 1 second.
 */
static void
WaitForCronTasks(List *taskList)
{
	int taskCount = list_length(taskList);

	if (taskCount > 0)
	{
		PollForTasks(taskList);
	}
	else
	{
		WaitForLatch(MaxWait);
	}
}

/*
 * WaitForLatch waits for the given number of milliseconds unless a signal