75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// Package mclock is a wrapper for a monotonic clock source
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package mclock
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import (
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"time"
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"github.com/aristanetworks/goarista/monotime"
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)
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// AbsTime represents absolute monotonic time.
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type AbsTime time.Duration
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// Now returns the current absolute monotonic time.
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func Now() AbsTime {
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return AbsTime(monotime.Now())
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}
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// Add returns t + d.
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func (t AbsTime) Add(d time.Duration) AbsTime {
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return t + AbsTime(d)
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}
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// The Clock interface makes it possible to replace the monotonic system clock with
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// a simulated clock.
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type Clock interface {
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Now() AbsTime
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Sleep(time.Duration)
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After(time.Duration) <-chan time.Time
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AfterFunc(d time.Duration, f func()) Timer
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}
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// Timer represents a cancellable event returned by AfterFunc
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type Timer interface {
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Stop() bool
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}
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// System implements Clock using the system clock.
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type System struct{}
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// Now returns the current monotonic time.
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func (System) Now() AbsTime {
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return AbsTime(monotime.Now())
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}
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// Sleep blocks for the given duration.
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func (System) Sleep(d time.Duration) {
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time.Sleep(d)
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}
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// After returns a channel which receives the current time after d has elapsed.
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func (System) After(d time.Duration) <-chan time.Time {
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return time.After(d)
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}
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// AfterFunc runs f on a new goroutine after the duration has elapsed.
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func (System) AfterFunc(d time.Duration, f func()) Timer {
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return time.AfterFunc(d, f)
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}
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