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// 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.
// +build cgo
package runtime_test
import (
"runtime"
"testing"
)
func TestCgoCrashHandler(t *testing.T) {
testCrashHandler(t, true)
}
func TestCgoSignalDeadlock(t *testing.T) {
if testing.Short() && runtime.GOOS == "windows" {
t.Skip("Skipping in short mode") // takes up to 64 seconds
}
t.Skip("gccgo does not have a go command")
got := executeTest(t, cgoSignalDeadlockSource, nil)
want := "OK\n"
if got != want {
t.Fatalf("expected %q, but got %q", want, got)
}
}
func TestCgoTraceback(t *testing.T) {
got := executeTest(t, cgoTracebackSource, nil)
want := "OK\n"
if got != want {
t.Fatalf("expected %q, but got %q", want, got)
}
}
const cgoSignalDeadlockSource = `
package main
import "C"
import (
"fmt"
"runtime"
"time"
)
func main() {
runtime.GOMAXPROCS(100)
ping := make(chan bool)
go func() {
for i := 0; ; i++ {
runtime.Gosched()
select {
case done := <-ping:
if done {
ping <- true
return
}
ping <- true
default:
}
func() {
defer func() {
recover()
}()
var s *string
*s = ""
}()
}
}()
time.Sleep(time.Millisecond)
for i := 0; i < 64; i++ {
go func() {
runtime.LockOSThread()
select {}
}()
go func() {
runtime.LockOSThread()
select {}
}()
time.Sleep(time.Millisecond)
ping <- false
select {
case <-ping:
case <-time.After(time.Second):
fmt.Printf("HANG\n")
return
}
}
ping <- true
select {
case <-ping:
case <-time.After(time.Second):
fmt.Printf("HANG\n")
return
}
fmt.Printf("OK\n")
}
`
const cgoTracebackSource = `
package main
/* void foo(void) {} */
import "C"
import (
"fmt"
"runtime"
)
func main() {
C.foo()
buf := make([]byte, 1)
runtime.Stack(buf, true)
fmt.Printf("OK\n")
}
`
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