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https://github.com/golang/go
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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.
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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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// +build linux,freebsd,openbsd
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package cgotest
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/*
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#include <unistd.h>
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#include <sys/syscall.h>
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void Gosched(void);
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static int Ctid(void) { Gosched(); return syscall(SYS_gettid); }
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*/
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import "C"
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import (
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"runtime"
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"syscall"
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"testing"
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"time"
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)
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//export Gosched
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func Gosched() {
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runtime.Gosched()
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}
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func init() {
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testThreadLockFunc = testThreadLock
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}
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func testThreadLock(t *testing.T) {
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stop := make(chan int)
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go func() {
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// We need the G continue running,
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// so the M has a chance to run this G.
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for {
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select {
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case <-stop:
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return
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case <-time.After(time.Millisecond * 100):
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}
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}
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}()
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defer close(stop)
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for i := 0; i < 1000; i++ {
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if C.int(syscall.Gettid()) != C.Ctid() {
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t.Fatalf("cgo has not locked OS thread")
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}
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}
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}
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