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Make timeutil.SimulatedClock concurrency safe
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@ -5,7 +5,10 @@
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// Package timeutil exports functions and types related to time and date.
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package timeutil
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import "time"
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import (
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"sync"
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"time"
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)
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// A Clock is an object that can tell you the current time.
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//
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@ -27,16 +30,30 @@ func (_ *realTimeClock) Now() time.Time { return time.Now() }
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// A SimulatedClock is a concrete Clock implementation that doesn't "tick" on its own.
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// Time is advanced by explicit call to the AdvanceTime() or SetTime() functions.
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// This object is concurrency safe.
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type SimulatedClock struct {
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t time.Time
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mu sync.Mutex
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t time.Time // guarded by mu
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}
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func NewSimulatedClock(t time.Time) *SimulatedClock {
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return &SimulatedClock{t}
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return &SimulatedClock{t: t}
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}
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func (c *SimulatedClock) Now() time.Time { return c.t }
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func (c *SimulatedClock) Now() time.Time {
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c.mu.Lock()
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defer c.mu.Unlock()
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return c.t
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}
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func (c *SimulatedClock) SetTime(t time.Time) { c.t = t }
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func (c *SimulatedClock) SetTime(t time.Time) {
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c.mu.Lock()
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defer c.mu.Unlock()
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c.t = t
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}
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func (c *SimulatedClock) AdvanceTime(d time.Duration) { c.t = c.t.Add(d) }
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func (c *SimulatedClock) AdvanceTime(d time.Duration) {
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c.mu.Lock()
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defer c.mu.Unlock()
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c.t = c.t.Add(d)
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}
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