forked from cerc-io/plugeth
b1c3010bf2
This change adds tests for the virtual clock and aligns the interface with the time package by renaming Cancel to Stop. It also removes the binary search from Stop because it complicates the code unnecessarily.
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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