mirror of
https://github.com/golang/go
synced 2024-11-14 09:00:21 -07:00
8f1e2d4ef7
If we run 'go test ./...' in the misc module, we don't want to see errors for these standalone files. We could instead add +ignore tags to each file individually, but this is exactly what a testdata directory is for. Updates #30228 Change-Id: I7047ad888dd6aff701f5982d58b6a79f6a487c58 Reviewed-on: https://go-review.googlesource.com/c/163417 Run-TryBot: Bryan C. Mills <bcmills@google.com> Reviewed-by: Jay Conrod <jayconrod@google.com>
50 lines
817 B
Go
50 lines
817 B
Go
// Copyright 2016 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package main
|
|
|
|
// Check that writes to Go allocated memory, with Go synchronization,
|
|
// do not look like a race.
|
|
|
|
/*
|
|
#cgo CFLAGS: -fsanitize=thread
|
|
#cgo LDFLAGS: -fsanitize=thread
|
|
|
|
void f(char *p) {
|
|
*p = 1;
|
|
}
|
|
*/
|
|
import "C"
|
|
|
|
import (
|
|
"runtime"
|
|
"sync"
|
|
)
|
|
|
|
func main() {
|
|
var wg sync.WaitGroup
|
|
var mu sync.Mutex
|
|
c := make(chan []C.char, 100)
|
|
for i := 0; i < 10; i++ {
|
|
wg.Add(2)
|
|
go func() {
|
|
defer wg.Done()
|
|
for i := 0; i < 100; i++ {
|
|
c <- make([]C.char, 4096)
|
|
runtime.Gosched()
|
|
}
|
|
}()
|
|
go func() {
|
|
defer wg.Done()
|
|
for i := 0; i < 100; i++ {
|
|
p := &(<-c)[0]
|
|
mu.Lock()
|
|
C.f(p)
|
|
mu.Unlock()
|
|
}
|
|
}()
|
|
}
|
|
wg.Wait()
|
|
}
|