// The wakeTime method uses minWhenHeap and minWhenModified
	// to determine the next wake time.
	// If minWhenHeap = 0, it means there are no timers in the heap.
	minWhenHeap atomic.Int64

	// minWhenModified is a lower bound on the minimum
	// heap[i].when over timers with the timerModified bit set.
	// If minWhenModified = 0, it means there are no timerModified timers in the heap.
	minWhenModified atomic.Int64
}