1 files changed, 53 insertions, 0 deletions
diff --git a/src/pkg/sync/mutex_test.go b/src/pkg/sync/mutex_test.go
new file mode 100644
index 000000000..819dbb9de
--- /dev/null
+++ b/src/pkg/sync/mutex_test.go
@@ -0,0 +1,53 @@
+// Copyright 2009 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.
+
+// GOMAXPROCS=10 gotest
+
+package sync
+
+import (
+	"sync";
+	"testing"
+)
+
+func HammerSemaphore(s *int32, cdone chan bool) {
+	for i := 0; i < 1000; i++ {
+		semacquire(s);
+		semrelease(s);
+	}
+	cdone <- true;
+}
+
+func TestSemaphore(t *testing.T) {
+	s := new(int32);
+	*s = 1;
+	c := make(chan bool);
+	for i := 0; i < 10; i++ {
+		go HammerSemaphore(s, c);
+	}
+	for i := 0; i < 10; i++ {
+		<-c;
+	}
+}
+
+
+func HammerMutex(m *Mutex, cdone chan bool) {
+	for i := 0; i < 1000; i++ {
+		m.Lock();
+		m.Unlock();
+	}
+	cdone <- true;
+}
+
+func TestMutex(t *testing.T) {
+	m := new(Mutex);
+	c := make(chan bool);
+	for i := 0; i < 10; i++ {
+		go HammerMutex(m, c);
+	}
+	for i := 0; i < 10; i++ {
+		<-c;
+	}
+}
+