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
77 lines
1.3 KiB
Go
77 lines
1.3 KiB
Go
// Copyright 2016 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 main
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import "runtime"
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func init() {
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register("concurrentMapWrites", concurrentMapWrites)
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register("concurrentMapReadWrite", concurrentMapReadWrite)
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register("concurrentMapIterateWrite", concurrentMapIterateWrite)
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}
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func concurrentMapWrites() {
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m := map[int]int{}
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c := make(chan struct{})
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go func() {
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for i := 0; i < 10000; i++ {
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m[5] = 0
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runtime.Gosched()
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}
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c <- struct{}{}
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}()
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go func() {
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for i := 0; i < 10000; i++ {
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m[6] = 0
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runtime.Gosched()
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}
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c <- struct{}{}
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}()
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<-c
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<-c
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}
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func concurrentMapReadWrite() {
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m := map[int]int{}
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c := make(chan struct{})
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go func() {
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for i := 0; i < 10000; i++ {
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m[5] = 0
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runtime.Gosched()
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}
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c <- struct{}{}
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}()
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go func() {
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for i := 0; i < 10000; i++ {
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_ = m[6]
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runtime.Gosched()
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}
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c <- struct{}{}
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}()
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<-c
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<-c
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}
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func concurrentMapIterateWrite() {
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m := map[int]int{}
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c := make(chan struct{})
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go func() {
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for i := 0; i < 10000; i++ {
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m[5] = 0
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runtime.Gosched()
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}
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c <- struct{}{}
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}()
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go func() {
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for i := 0; i < 10000; i++ {
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for range m {
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}
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runtime.Gosched()
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}
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c <- struct{}{}
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}()
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<-c
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<-c
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}
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