go closure_test 源码
golang closure_test 代码
文件路径：/src/runtime/closure_test.go
// Copyright 2011 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 runtime_test
import "testing"
var s int
func BenchmarkCallClosure(b *testing.B) {
for i := 0; i < b.N; i++ {
s += func(ii int) int { return 2 * ii }(i)
}
}
func BenchmarkCallClosure1(b *testing.B) {
for i := 0; i < b.N; i++ {
j := i
s += func(ii int) int { return 2*ii + j }(i)
}
}
var ss *int
func BenchmarkCallClosure2(b *testing.B) {
for i := 0; i < b.N; i++ {
j := i
s += func() int {
ss = &j
return 2
}()
}
}
func addr1(x int) *int {
return func() *int { return &x }()
}
func BenchmarkCallClosure3(b *testing.B) {
for i := 0; i < b.N; i++ {
ss = addr1(i)
}
}
func addr2() (x int, p *int) {
return 0, func() *int { return &x }()
}
func BenchmarkCallClosure4(b *testing.B) {
for i := 0; i < b.N; i++ {
_, ss = addr2()
}
}
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