134 lines
2.3 KiB
Go
134 lines
2.3 KiB
Go
// Copyright 2017 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !leak
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package gp
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import (
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"sync"
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"testing"
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"time"
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)
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func TestBasicAPI(t *testing.T) {
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gp := New(time.Second)
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var wg sync.WaitGroup
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wg.Add(1)
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// cover alloc()
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gp.Go(func() { wg.Done() })
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// cover put()
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wg.Wait()
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// cover get()
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gp.Go(func() {})
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}
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func TestGC(t *testing.T) {
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gp := New(200 * time.Millisecond)
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var wg sync.WaitGroup
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wg.Add(100)
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for i := 0; i < 100; i++ {
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idx := i
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gp.Go(func() {
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time.Sleep(time.Duration(idx+1) * time.Millisecond)
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wg.Done()
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})
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}
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wg.Wait()
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time.Sleep(300 * time.Millisecond)
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gp.Go(func() {}) // To trigger count change.
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gp.Lock()
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count := gp.count
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gp.Unlock()
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if count > 1 {
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t.Error("all goroutines should be recycled", count)
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}
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}
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func TestRace(t *testing.T) {
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gp := New(8 * time.Millisecond)
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var wg sync.WaitGroup
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begin := make(chan struct{})
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wg.Add(500)
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for i := 0; i < 50; i++ {
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go func() {
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<-begin
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for i := 0; i < 10; i++ {
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gp.Go(func() {
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wg.Done()
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})
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time.Sleep(5 * time.Millisecond)
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}
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}()
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}
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close(begin)
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wg.Wait()
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}
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func BenchmarkGoPool(b *testing.B) {
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gp := New(20 * time.Second)
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for i := 0; i < b.N/2; i++ {
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gp.Go(func() {})
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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gp.Go(dummy)
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}
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}
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func BenchmarkGo(b *testing.B) {
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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go dummy()
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}
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}
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func dummy() {
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}
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func BenchmarkMorestackPool(b *testing.B) {
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gp := New(5 * time.Second)
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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var wg sync.WaitGroup
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wg.Add(1)
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gp.Go(func() {
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morestack(false)
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wg.Done()
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})
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wg.Wait()
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}
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}
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func BenchmarkMoreStack(b *testing.B) {
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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morestack(false)
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wg.Done()
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}()
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wg.Wait()
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}
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}
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func morestack(f bool) {
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var stack [8 * 1024]byte
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if f {
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for i := 0; i < len(stack); i++ {
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stack[i] = 'a'
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}
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}
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}
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