go-lib/timer/timer.go at master · linuxdeepin/go-lib · GitHub

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// SPDX-FileCopyrightText: 2018 - 2022 UnionTech Software Technology Co., Ltd.

// SPDX-License-Identifier: GPL-3.0-or-later

package timer

import (

"time"

)

type _TimerState uint16

const (

_TimerStateNotStarted _TimerState = iota

_TimerStateStarted

_TimerStateStopped

)

// Timer is used for reporting rate.

type Timer struct {

timer time.Time

duration time.Duration

lastDuration time.Duration

state _TimerState

}

// NewTimer creates a new timer.

func NewTimer() *Timer {

timer := &Timer{

timer: time.Now(),

duration: 0,

state: _TimerStateNotStarted,

}

return timer

}

// Start the timer.

func (timer *Timer) Start() {

timer.state = _TimerStateStarted

timer.timer = time.Now()

}

// Stop timer.

func (timer *Timer) Stop() {

if timer.state&_TimerStateStarted != 1 {

return

}

timer.state = _TimerStateStopped

timer.duration += time.Since(timer.timer)

timer.lastDuration = timer.duration

}

// Continue a stopped timer.

func (timer *Timer) Continue() {

timer.Start()

}

// Reset a timer.

func (timer *Timer) Reset() {

timer.duration = time.Duration(0)

timer.Start()

}

// Elapsed returns the duration from start to end if timer is stopped.

// Elapsed returns the duration from start to now if timer is not stopped.

func (timer *Timer) Elapsed() time.Duration {

if timer.state == _TimerStateStarted {

return timer.lastDuration + time.Since(timer.timer)

}

return timer.duration

}

go-lib/timer/timer.go at master · linuxdeepin/go-lib · GitHub

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