mirror of
https://github.com/golang/go
synced 2024-11-24 19:10:15 -07:00
347259cbae
Gccgo isn't locking the OS thread properly during calls. Change-Id: Idb2475291405e390cbb83abb27a402fd0381d0c4 Reviewed-on: https://go-review.googlesource.com/18882 Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
54 lines
925 B
Go
54 lines
925 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.
|
|
|
|
// +build linux,freebsd,openbsd
|
|
|
|
package cgotest
|
|
|
|
/*
|
|
#include <unistd.h>
|
|
#include <sys/syscall.h>
|
|
void Gosched(void);
|
|
static int Ctid(void) { Gosched(); return syscall(SYS_gettid); }
|
|
*/
|
|
import "C"
|
|
|
|
import (
|
|
"runtime"
|
|
"syscall"
|
|
"testing"
|
|
"time"
|
|
)
|
|
|
|
//export Gosched
|
|
func Gosched() {
|
|
runtime.Gosched()
|
|
}
|
|
|
|
func init() {
|
|
testThreadLockFunc = testThreadLock
|
|
}
|
|
|
|
func testThreadLock(t *testing.T) {
|
|
stop := make(chan int)
|
|
go func() {
|
|
// We need the G continue running,
|
|
// so the M has a chance to run this G.
|
|
for {
|
|
select {
|
|
case <-stop:
|
|
return
|
|
case <-time.After(time.Millisecond * 100):
|
|
}
|
|
}
|
|
}()
|
|
defer close(stop)
|
|
|
|
for i := 0; i < 1000; i++ {
|
|
if C.int(syscall.Gettid()) != C.Ctid() {
|
|
t.Fatalf("cgo has not locked OS thread")
|
|
}
|
|
}
|
|
}
|