File size: 1,295 Bytes
e36aeda | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | // 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
}
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