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 package runtime_test 5 6 import "testing" 7 8 var s int 9 10 func BenchmarkCallClosure(b *testing.B) { 11 for i := 0; i < b.N; i++ { 12 s += func(ii int) int { return 2 * ii }(i) 13 } 14 } 15 16 func BenchmarkCallClosure1(b *testing.B) { 17 for i := 0; i < b.N; i++ { 18 j := i 19 s += func(ii int) int { return 2*ii + j }(i) 20 } 21 } 22 23 var ss *int 24 25 func BenchmarkCallClosure2(b *testing.B) { 26 for i := 0; i < b.N; i++ { 27 j := i 28 s += func() int { 29 ss = &j 30 return 2 31 }() 32 } 33 } 34 35 func addr1(x int) *int { 36 return func() *int { return &x }() 37 } 38 39 func BenchmarkCallClosure3(b *testing.B) { 40 for i := 0; i < b.N; i++ { 41 ss = addr1(i) 42 } 43 } 44 45 func addr2() (x int, p *int) { 46 return 0, func() *int { return &x }() 47 } 48 49 func BenchmarkCallClosure4(b *testing.B) { 50 for i := 0; i < b.N; i++ { 51 _, ss = addr2() 52 } 53 } 54
