go finalizer_test 源码
golang finalizer_test 代码
文件路径：/src/runtime/race/testdata/finalizer_test.go
// Copyright 2012 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 race_test
import (
"runtime"
"sync"
"testing"
"time"
)
func TestNoRaceFin(t *testing.T) {
c := make(chan bool)
go func() {
x := new(string)
runtime.SetFinalizer(x, func(x *string) {
*x = "foo"
})
*x = "bar"
c <- true
}()
<-c
runtime.GC()
time.Sleep(100 * time.Millisecond)
}
var finVar struct {
sync.Mutex
cnt int
}
func TestNoRaceFinGlobal(t *testing.T) {
c := make(chan bool)
go func() {
x := new(string)
runtime.SetFinalizer(x, func(x *string) {
finVar.Lock()
finVar.cnt++
finVar.Unlock()
})
c <- true
}()
<-c
runtime.GC()
time.Sleep(100 * time.Millisecond)
finVar.Lock()
finVar.cnt++
finVar.Unlock()
}
func TestRaceFin(t *testing.T) {
c := make(chan bool)
y := 0
_ = y
go func() {
x := new(string)
runtime.SetFinalizer(x, func(x *string) {
y = 42
})
c <- true
}()
<-c
runtime.GC()
time.Sleep(100 * time.Millisecond)
y = 66
}
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