mirror of
https://github.com/golang/go
synced 2024-10-02 12:18:33 -06:00
2c4edb0eea
before: runtime_test.BenchmarkCallClosure1 20000000 135 ns/op after: runtime_test.BenchmarkCallClosure1 500000000 6 ns/op R=rsc CC=golang-dev https://golang.org/cl/4527091
54 lines
936 B
Go
54 lines
936 B
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package runtime_test
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import "testing"
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var s int
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func BenchmarkCallClosure(b *testing.B) {
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for i := 0; i < b.N; i++ {
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s += func(ii int) int { return 2 * ii }(i)
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}
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}
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func BenchmarkCallClosure1(b *testing.B) {
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for i := 0; i < b.N; i++ {
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j := i
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s += func(ii int) int { return 2*ii + j }(i)
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}
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}
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var ss *int
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func BenchmarkCallClosure2(b *testing.B) {
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for i := 0; i < b.N; i++ {
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j := i
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s += func() int {
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ss = &j
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return 2
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}()
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}
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}
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func addr1(x int) *int {
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return func() *int { return &x }()
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}
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func BenchmarkCallClosure3(b *testing.B) {
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for i := 0; i < b.N; i++ {
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ss = addr1(i)
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}
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}
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func addr2() (x int, p *int) {
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return 0, func() *int { return &x }()
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}
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func BenchmarkCallClosure4(b *testing.B) {
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for i := 0; i < b.N; i++ {
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_, ss = addr2()
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}
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}
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