c2047754c3
Compiler changes:
* Change map assignment to use mapassign and assign value directly.
* Change string iteration to use decoderune, faster for ASCII strings.
* Change makeslice to take int, and use makeslice64 for larger values.
* Add new noverflow field to hmap struct used for maps.
Unresolved problems, to be fixed later:
* Commented out test in go/types/sizes_test.go that doesn't compile.
* Commented out reflect.TestStructOf test for padding after zero-sized field.
Reviewed-on: https://go-review.googlesource.com/35231
gotools/:
Updates for Go 1.8rc1.
* Makefile.am (go_cmd_go_files): Add bug.go.
(s-zdefaultcc): Write defaultPkgConfig.
* Makefile.in: Rebuild.
From-SVN: r244456
45 lines
1016 B
Go
45 lines
1016 B
Go
// Copyright 2014 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 context_test
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import (
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. "context"
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"fmt"
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"testing"
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)
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func BenchmarkContextCancelTree(b *testing.B) {
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depths := []int{1, 10, 100, 1000}
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for _, d := range depths {
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b.Run(fmt.Sprintf("depth=%d", d), func(b *testing.B) {
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b.Run("Root=Background", func(b *testing.B) {
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for i := 0; i < b.N; i++ {
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buildContextTree(Background(), d)
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}
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})
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b.Run("Root=OpenCanceler", func(b *testing.B) {
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for i := 0; i < b.N; i++ {
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ctx, cancel := WithCancel(Background())
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buildContextTree(ctx, d)
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cancel()
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}
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})
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b.Run("Root=ClosedCanceler", func(b *testing.B) {
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for i := 0; i < b.N; i++ {
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ctx, cancel := WithCancel(Background())
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cancel()
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buildContextTree(ctx, d)
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}
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})
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})
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}
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}
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func buildContextTree(root Context, depth int) {
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for d := 0; d < depth; d++ {
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root, _ = WithCancel(root)
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}
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}
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