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![Emmanuel Odeke](/assets/img/avatar_default.png)
Follows suit with https://go-review.googlesource.com/#/c/20111. Generated by running $ grep -R 'Go Authors. All' * | cut -d":" -f1 | while read F;do perl -pi -e 's/Go Authors. All/Go Authors. All/g' $F;done The code in cmd/internal/unvendor wasn't changed. Fixes #15213 Change-Id: I4f235cee0a62ec435f9e8540a1ec08ae03b1a75f Reviewed-on: https://go-review.googlesource.com/21819 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
114 lines
1.8 KiB
Go
114 lines
1.8 KiB
Go
// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"math/rand"
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"runtime"
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"sync"
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)
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func mapTypes() []MapType {
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// TODO(bradfitz): bunch more map types of all different key and value types.
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// Use reflect.MapOf and a program to generate lots of types & struct types.
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// For now, just one:
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return []MapType{intMapType{}}
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}
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type MapType interface {
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NewMap() Map
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}
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type Map interface {
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AddItem()
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DelItem()
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Len() int
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GetItem()
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RangeAll()
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}
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func stressMapType(mt MapType, done func()) {
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defer done()
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m := mt.NewMap()
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for m.Len() < 10000 {
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Println("map at ", m.Len())
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if m.Len()%100 == 0 {
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runtime.Gosched()
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}
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m.AddItem()
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m.AddItem()
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m.DelItem()
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var wg sync.WaitGroup
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const numGets = 10
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wg.Add(numGets)
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for i := 0; i < numGets; i++ {
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go func(i int) {
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if i&1 == 0 {
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m.GetItem()
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} else {
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m.RangeAll()
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}
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wg.Done()
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}(i)
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}
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wg.Wait()
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}
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for m.Len() > 0 {
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m.DelItem()
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}
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}
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type intMapType struct{}
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func (intMapType) NewMap() Map {
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return make(intMap)
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}
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var deadcafe = []byte("\xDE\xAD\xCA\xFE")
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type intMap map[int][]byte
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func (m intMap) AddItem() {
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s0 := len(m)
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for len(m) == s0 {
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key := rand.Intn(s0 + 1)
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m[key] = make([]byte, rand.Intn(64<<10))
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}
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}
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func (m intMap) DelItem() {
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for k := range m {
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delete(m, k)
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return
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}
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}
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func (m intMap) GetItem() {
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key := rand.Intn(len(m))
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if s, ok := m[key]; ok {
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copy(s, deadcafe)
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}
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}
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func (m intMap) Len() int { return len(m) }
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func (m intMap) RangeAll() {
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for _ = range m {
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}
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for range m {
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}
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}
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func stressMaps() {
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for {
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var wg sync.WaitGroup
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for _, mt := range mapTypes() {
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wg.Add(1)
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go stressMapType(mt, wg.Done)
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}
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wg.Wait()
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}
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}
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