| Linux in-mum-web1499.main-hosting.eu 5.14.0-503.40.1.el9_5.x86_64 #1 SMP PREEMPT_DYNAMIC Mon May 5 06:06:04 EDT 2025 x86_64 Path : /opt/golang/1.22.0/src/runtime/testdata/testprog/ |
| Current File : //opt/golang/1.22.0/src/runtime/testdata/testprog/map.go |
// Copyright 2016 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.
package main
import "runtime"
func init() {
register("concurrentMapWrites", concurrentMapWrites)
register("concurrentMapReadWrite", concurrentMapReadWrite)
register("concurrentMapIterateWrite", concurrentMapIterateWrite)
}
func concurrentMapWrites() {
m := map[int]int{}
c := make(chan struct{})
go func() {
for i := 0; i < 10000; i++ {
m[5] = 0
runtime.Gosched()
}
c <- struct{}{}
}()
go func() {
for i := 0; i < 10000; i++ {
m[6] = 0
runtime.Gosched()
}
c <- struct{}{}
}()
<-c
<-c
}
func concurrentMapReadWrite() {
m := map[int]int{}
c := make(chan struct{})
go func() {
for i := 0; i < 10000; i++ {
m[5] = 0
runtime.Gosched()
}
c <- struct{}{}
}()
go func() {
for i := 0; i < 10000; i++ {
_ = m[6]
runtime.Gosched()
}
c <- struct{}{}
}()
<-c
<-c
}
func concurrentMapIterateWrite() {
m := map[int]int{}
c := make(chan struct{})
go func() {
for i := 0; i < 10000; i++ {
m[5] = 0
runtime.Gosched()
}
c <- struct{}{}
}()
go func() {
for i := 0; i < 10000; i++ {
for range m {
}
runtime.Gosched()
}
c <- struct{}{}
}()
<-c
<-c
}