golang cgo_test_main 代码
文件路径：/src/runtime/race/testdata/cgo_test_main.go
// Copyright 2012 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
/*
int sync;
void Notify(void)
{
__sync_fetch_and_add(&sync, 1);
}
void Wait(void)
{
while(__sync_fetch_and_add(&sync, 0) == 0) {}
}
*/
import "C"
func main() {
data := 0
go func() {
data = 1
C.Notify()
}()
C.Wait()
_ = data
}