mirror of https://github.com/status-im/op-geth.git
83 lines
2.2 KiB
Go
83 lines
2.2 KiB
Go
// Copyright 2016 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library 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 Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
// Package mclock is a wrapper for a monotonic clock source
|
|
package mclock
|
|
|
|
import (
|
|
"time"
|
|
|
|
"github.com/aristanetworks/goarista/monotime"
|
|
)
|
|
|
|
// AbsTime represents absolute monotonic time.
|
|
type AbsTime time.Duration
|
|
|
|
// Now returns the current absolute monotonic time.
|
|
func Now() AbsTime {
|
|
return AbsTime(monotime.Now())
|
|
}
|
|
|
|
// Add returns t + d.
|
|
func (t AbsTime) Add(d time.Duration) AbsTime {
|
|
return t + AbsTime(d)
|
|
}
|
|
|
|
// Clock interface makes it possible to replace the monotonic system clock with
|
|
// a simulated clock.
|
|
type Clock interface {
|
|
Now() AbsTime
|
|
Sleep(time.Duration)
|
|
After(time.Duration) <-chan time.Time
|
|
AfterFunc(d time.Duration, f func()) Event
|
|
}
|
|
|
|
// Event represents a cancellable event returned by AfterFunc
|
|
type Event interface {
|
|
Cancel() bool
|
|
}
|
|
|
|
// System implements Clock using the system clock.
|
|
type System struct{}
|
|
|
|
// Now implements Clock.
|
|
func (System) Now() AbsTime {
|
|
return AbsTime(monotime.Now())
|
|
}
|
|
|
|
// Sleep implements Clock.
|
|
func (System) Sleep(d time.Duration) {
|
|
time.Sleep(d)
|
|
}
|
|
|
|
// After implements Clock.
|
|
func (System) After(d time.Duration) <-chan time.Time {
|
|
return time.After(d)
|
|
}
|
|
|
|
// AfterFunc implements Clock.
|
|
func (System) AfterFunc(d time.Duration, f func()) Event {
|
|
return (*SystemEvent)(time.AfterFunc(d, f))
|
|
}
|
|
|
|
// SystemEvent implements Event using time.Timer.
|
|
type SystemEvent time.Timer
|
|
|
|
// Cancel implements Event.
|
|
func (e *SystemEvent) Cancel() bool {
|
|
return (*time.Timer)(e).Stop()
|
|
}
|