package agent

import "math"

func (a *Agent) acquireSemaphore() {
	a.sem <- struct{}{}
}

func (a *Agent) releaseSemaphore() {
	<-a.sem
}

// delete container stats from map using mutex
func (a *Agent) deleteContainerStatsSync(id string) {
	a.prevContainerStatsMutex.Lock()
	defer a.prevContainerStatsMutex.Unlock()
	delete(a.prevContainerStatsMap, id)
}

func bytesToMegabytes(b float64) float64 {
	return twoDecimals(b / 1048576)
}

func bytesToGigabytes(b uint64) float64 {
	return twoDecimals(float64(b) / 1073741824)
}

func twoDecimals(value float64) float64 {
	return math.Round(value*100) / 100
}