golang gccgo 代码
文件路径：/misc/cgo/test/testdata/issue9400/gccgo.go
/ Copyright 2014 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.
/ +build gccgo
package issue9400
import (
"runtime"
"sync/atomic"
)
/ The test for the gc compiler resets the stack pointer so that the
/ stack gets modified. We don't have a way to do that for gccgo
/ without writing more assembly code, which we haven't bothered to
/ do. So this is not much of a test.
var Baton int32
func RewindAndSetgid() {
atomic.StoreInt32(&Baton, 1)
for atomic.LoadInt32(&Baton) != 0 {
runtime.Gosched()
}
}