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/*
* Copyright (C) 2015 ~ 2018 Deepin Technology Co., Ltd.
*
* Author: jouyouyun <jouyouwen717@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package profile
import (
"time"
)
// Timer recoreds time cost.
type Timer struct {
startTime time.Time
moduleStartTime time.Time
endTime time.Time
}
// NewTimer creates a new timer and start it.
func NewTimer() *Timer {
t := &Timer{}
t.startTime = time.Now()
t.endTime = t.startTime
return t
}
// Elapsed returns the time duration from the time of start or last elapsed.
func (t *Timer) Elapsed() time.Duration {
endTime := time.Now()
sub := endTime.Sub(t.moduleStartTime)
t.moduleStartTime = endTime
return sub
}
// TotalCost will stop the timer and return the total cost time.
func (t *Timer) TotalCost() time.Duration {
if t.startTime == t.endTime {
t.endTime = time.Now()
}
return t.endTime.Sub(t.startTime)
}
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