1 files changed, 202 insertions, 0 deletions
diff --git a/src/runtime/race/testdata/sync_test.go b/src/runtime/race/testdata/sync_test.go
new file mode 100644
index 0000000..b5fcd6c
--- /dev/null
+++ b/src/runtime/race/testdata/sync_test.go
@@ -0,0 +1,202 @@
+// Copyright 2011 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.
+
+package race_test
+
+import (
+	"sync"
+	"testing"
+	"time"
+)
+
+func TestNoRaceCond(t *testing.T) {
+	x := 0
+	_ = x
+	condition := 0
+	var mu sync.Mutex
+	cond := sync.NewCond(&mu)
+	go func() {
+		x = 1
+		mu.Lock()
+		condition = 1
+		cond.Signal()
+		mu.Unlock()
+	}()
+	mu.Lock()
+	for condition != 1 {
+		cond.Wait()
+	}
+	mu.Unlock()
+	x = 2
+}
+
+func TestRaceCond(t *testing.T) {
+	done := make(chan bool)
+	var mu sync.Mutex
+	cond := sync.NewCond(&mu)
+	x := 0
+	_ = x
+	condition := 0
+	go func() {
+		time.Sleep(10 * time.Millisecond) // Enter cond.Wait loop
+		x = 1
+		mu.Lock()
+		condition = 1
+		cond.Signal()
+		mu.Unlock()
+		time.Sleep(10 * time.Millisecond) // Exit cond.Wait loop
+		mu.Lock()
+		x = 3
+		mu.Unlock()
+		done <- true
+	}()
+	mu.Lock()
+	for condition != 1 {
+		cond.Wait()
+	}
+	mu.Unlock()
+	x = 2
+	<-done
+}
+
+// We do not currently automatically
+// parse this test. It is intended that the creation
+// stack is observed manually not to contain
+// off-by-one errors
+func TestRaceAnnounceThreads(t *testing.T) {
+	const N = 7
+	allDone := make(chan bool, N)
+
+	var x int
+	_ = x
+
+	var f, g, h func()
+	f = func() {
+		x = 1
+		go g()
+		go func() {
+			x = 1
+			allDone <- true
+		}()
+		x = 2
+		allDone <- true
+	}
+
+	g = func() {
+		for i := 0; i < 2; i++ {
+			go func() {
+				x = 1
+				allDone <- true
+			}()
+			allDone <- true
+		}
+	}
+
+	h = func() {
+		x = 1
+		x = 2
+		go f()
+		allDone <- true
+	}
+
+	go h()
+
+	for i := 0; i < N; i++ {
+		<-allDone
+	}
+}
+
+func TestNoRaceAfterFunc1(t *testing.T) {
+	i := 2
+	c := make(chan bool)
+	var f func()
+	f = func() {
+		i--
+		if i >= 0 {
+			time.AfterFunc(0, f)
+		} else {
+			c <- true
+		}
+	}
+
+	time.AfterFunc(0, f)
+	<-c
+}
+
+func TestNoRaceAfterFunc2(t *testing.T) {
+	var x int
+	_ = x
+	timer := time.AfterFunc(10, func() {
+		x = 1
+	})
+	defer timer.Stop()
+}
+
+func TestNoRaceAfterFunc3(t *testing.T) {
+	c := make(chan bool, 1)
+	x := 0
+	_ = x
+	time.AfterFunc(1e7, func() {
+		x = 1
+		c <- true
+	})
+	<-c
+}
+
+func TestRaceAfterFunc3(t *testing.T) {
+	c := make(chan bool, 2)
+	x := 0
+	_ = x
+	time.AfterFunc(1e7, func() {
+		x = 1
+		c <- true
+	})
+	time.AfterFunc(2e7, func() {
+		x = 2
+		c <- true
+	})
+	<-c
+	<-c
+}
+
+// This test's output is intended to be
+// observed manually. One should check
+// that goroutine creation stack is
+// comprehensible.
+func TestRaceGoroutineCreationStack(t *testing.T) {
+	var x int
+	_ = x
+	var ch = make(chan bool, 1)
+
+	f1 := func() {
+		x = 1
+		ch <- true
+	}
+	f2 := func() { go f1() }
+	f3 := func() { go f2() }
+	f4 := func() { go f3() }
+
+	go f4()
+	x = 2
+	<-ch
+}
+
+// A nil pointer in a mutex method call should not
+// corrupt the race detector state.
+// Used to hang indefinitely.
+func TestNoRaceNilMutexCrash(t *testing.T) {
+	var mutex sync.Mutex
+	panics := 0
+	defer func() {
+		if x := recover(); x != nil {
+			mutex.Lock()
+			panics++
+			mutex.Unlock()
+		} else {
+			panic("no panic")
+		}
+	}()
+	var othermutex *sync.RWMutex
+	othermutex.RLock()
+}