-
Notifications
You must be signed in to change notification settings - Fork 711
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
22 changed files
with
420 additions
and
95 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| // Copyright 2020 The Go Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
|
||
| // Note: This file is copied from https://go-review.googlesource.com/c/go/+/276133 | ||
|
|
||
| package timerpool | ||
|
|
||
| import ( | ||
| "sync" | ||
| "time" | ||
| ) | ||
|
|
||
| // GlobalTimerPool is a global pool for reusing *time.Timer. | ||
| var GlobalTimerPool TimerPool | ||
|
|
||
| // TimerPool is a wrapper of sync.Pool which caches *time.Timer for reuse. | ||
| type TimerPool struct { | ||
| pool sync.Pool | ||
| } | ||
|
|
||
| // Get returns a timer with a given duration. | ||
| func (tp *TimerPool) Get(d time.Duration) *time.Timer { | ||
| if v := tp.pool.Get(); v != nil { | ||
| timer := v.(*time.Timer) | ||
| timer.Reset(d) | ||
| return timer | ||
| } | ||
| return time.NewTimer(d) | ||
| } | ||
|
|
||
| // Put tries to call timer.Stop() before putting it back into pool, | ||
| // if the timer.Stop() returns false (it has either already expired or been stopped), | ||
| // have a shot at draining the channel with residual time if there is one. | ||
| func (tp *TimerPool) Put(timer *time.Timer) { | ||
| if !timer.Stop() { | ||
| select { | ||
| case <-timer.C: | ||
| default: | ||
| } | ||
| } | ||
| tp.pool.Put(timer) | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| // Copyright 2020 The Go Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
|
||
| // Note: This file is copied from https://go-review.googlesource.com/c/go/+/276133 | ||
|
|
||
| package timerpool | ||
|
|
||
| import ( | ||
| "testing" | ||
| "time" | ||
| ) | ||
|
|
||
| func TestTimerPool(t *testing.T) { | ||
| var tp TimerPool | ||
|
|
||
| for i := 0; i < 100; i++ { | ||
| timer := tp.Get(20 * time.Millisecond) | ||
|
|
||
| select { | ||
| case <-timer.C: | ||
| t.Errorf("timer expired too early") | ||
| continue | ||
| default: | ||
| } | ||
|
|
||
| select { | ||
| case <-time.After(100 * time.Millisecond): | ||
| t.Errorf("timer didn't expire on time") | ||
| case <-timer.C: | ||
| } | ||
|
|
||
| tp.Put(timer) | ||
| } | ||
| } | ||
|
|
||
| const timeout = 10 * time.Millisecond | ||
|
|
||
| func BenchmarkTimerUtilization(b *testing.B) { | ||
| b.Run("TimerWithPool", func(b *testing.B) { | ||
| for i := 0; i < b.N; i++ { | ||
| t := GlobalTimerPool.Get(timeout) | ||
| GlobalTimerPool.Put(t) | ||
| } | ||
| }) | ||
| b.Run("TimerWithoutPool", func(b *testing.B) { | ||
| for i := 0; i < b.N; i++ { | ||
| t := time.NewTimer(timeout) | ||
| t.Stop() | ||
| } | ||
| }) | ||
| } | ||
|
|
||
| func BenchmarkTimerPoolParallel(b *testing.B) { | ||
| b.RunParallel(func(pb *testing.PB) { | ||
| for pb.Next() { | ||
| t := GlobalTimerPool.Get(timeout) | ||
| GlobalTimerPool.Put(t) | ||
| } | ||
| }) | ||
| } | ||
|
|
||
| func BenchmarkTimerNativeParallel(b *testing.B) { | ||
| b.RunParallel(func(pb *testing.PB) { | ||
| for pb.Next() { | ||
| t := time.NewTimer(timeout) | ||
| t.Stop() | ||
| } | ||
| }) | ||
| } |
Oops, something went wrong.