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runtime: rename TestPreemptM to TestSignalM

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TestPreemptM doesn't test preemptM, it tests signalM. Rename it and
co-locate it with the other tests related to signals.

Change-Id: I7b95f2ba96530c49cfa8d5bf33282946b5f2d9af
Reviewed-on: https://go-review.googlesource.com/c/go/+/203891
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Austin Clements 2019-10-28 22:19:32 -04:00
parent b6bdf4587f
commit 28a15e3df3
2 changed files with 24 additions and 35 deletions
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24
src/runtime/crash_unix_test.go
View file

@ -16,6 +16,7 @@ import (
"path/filepath" "path/filepath"
"runtime" "runtime"
"strings" "strings"
"sync"
"syscall" "syscall"
"testing" "testing"
"unsafe" "unsafe"
@ -309,3 +310,26 @@ func TestSignalDuringExec(t *testing.T) {
t.Fatalf("want %s, got %s\n", want, output) t.Fatalf("want %s, got %s\n", want, output)
} }
} }
func TestSignalM(t *testing.T) {
var want, got int64
var wg sync.WaitGroup
ready := make(chan *runtime.M)
wg.Add(1)
go func() {
runtime.LockOSThread()
want, got = runtime.WaitForSigusr1(func(mp *runtime.M) {
ready <- mp
}, 1e9)
runtime.UnlockOSThread()
wg.Done()
}()
waitingM := <-ready
runtime.SendSigusr1(waitingM)
wg.Wait()
if got == -1 {
t.Fatal("signalM signal not received")
} else if want != got {
t.Fatalf("signal sent to M %d, but received on M %d", want, got)
}
}

35
src/runtime/preemptm_test.go
View file

@ -1,35 +0,0 @@
// Copyright 2019 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 aix darwin dragonfly freebsd linux netbsd openbsd solaris
package runtime_test
import (
"runtime"
"sync"
"testing"
)
func TestPreemptM(t *testing.T) {
var want, got int64
var wg sync.WaitGroup
ready := make(chan *runtime.M)
wg.Add(1)
go func() {
runtime.LockOSThread()
want, got = runtime.WaitForSigusr1(func(mp *runtime.M) {
ready <- mp
}, 1e9)
runtime.UnlockOSThread()
wg.Done()
}()
runtime.SendSigusr1(<-ready)
wg.Wait()
if got == -1 {
t.Fatal("preemptM signal not received")
} else if want != got {
t.Fatalf("signal sent to M %d, but received on M %d", want, got)
}
}