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/*
* Copyright (C) 2014 ~ 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 timer
// #include <time.h>
import "C"
import (
"fmt"
)
// TimeSpec holds times.
type TimeSpec struct {
seconds int64
nanoSeconds int64
}
func (ts TimeSpec) String() string {
return fmt.Sprintf("%d.%d", ts.Seconds(), ts.NanoSeconds())
}
// Seconds returns the seconds.
func (ts TimeSpec) Seconds() int64 {
return ts.seconds
}
// Milliseconds returns the milliseconds
func (ts TimeSpec) Milliseconds() int64 {
return ts.seconds*1000 + ts.nanoSeconds/1000000
}
// MicroSeconds returns milliseconds
func (ts TimeSpec) MicroSeconds() int64 {
return ts.seconds*1000000 + ts.nanoSeconds/1000
}
// NanoSeconds returns nanoseconds
func (ts TimeSpec) NanoSeconds() int64 {
return ts.nanoSeconds
}
// GetMonotonicTime returns the monotonic time, used when the time should be effected by time adjust, like timer.
// according to the sources of golang, the time.Now() is the CLOCK_REALTIME
// which will be affected by discontinuous jumps in the system time.
func GetMonotonicTime() TimeSpec {
var ts C.struct_timespec
// see http://man7.org/linux/man-pages/man2/clock_gettime.2.html for a list of CLOCK_ constants
C.clock_gettime(C.CLOCK_MONOTONIC_RAW, &ts)
// convert to something easier to manipulate
return TimeSpec{int64(ts.tv_sec), int64(ts.tv_nsec)}
}
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