1// Copyright 2011 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package runtime_test
6
7import "testing"
8
9var s int
10
11func BenchmarkCallClosure(b *testing.B) {
12	for i := 0; i < b.N; i++ {
13		s += func(ii int) int { return 2 * ii }(i)
14	}
15}
16
17func BenchmarkCallClosure1(b *testing.B) {
18	for i := 0; i < b.N; i++ {
19		j := i
20		s += func(ii int) int { return 2*ii + j }(i)
21	}
22}
23
24var ss *int
25
26func BenchmarkCallClosure2(b *testing.B) {
27	for i := 0; i < b.N; i++ {
28		j := i
29		s += func() int {
30			ss = &j
31			return 2
32		}()
33	}
34}
35
36func addr1(x int) *int {
37	return func() *int { return &x }()
38}
39
40func BenchmarkCallClosure3(b *testing.B) {
41	for i := 0; i < b.N; i++ {
42		ss = addr1(i)
43	}
44}
45
46func addr2() (x int, p *int) {
47	return 0, func() *int { return &x }()
48}
49
50func BenchmarkCallClosure4(b *testing.B) {
51	for i := 0; i < b.N; i++ {
52		_, ss = addr2()
53	}
54}
55