thread.cc race fix take 2

base/thread_unittest.cc

Index: base/thread_unittest.cc
===================================================================
--- base/thread_unittest.cc	(revision 8667)
+++ base/thread_unittest.cc	(working copy)
@@ -37,6 +37,20 @@
   int msec_;
 };
 
+class SleepInsideInitThread : public Thread {
+ public:
+  SleepInsideInitThread() : Thread("none") { init_called_ = false; }
+  virtual ~SleepInsideInitThread() { }
+
+  virtual void Init() {
+    PlatformThread::Sleep(500);
+    init_called_ = true;
+  }
+  bool InitCalled() { return init_called_; }
+ private:
+  bool init_called_;
+};
+
 }  // namespace
 
 TEST_F(ThreadTest, Restart) {
@@ -107,3 +121,12 @@
   EXPECT_TRUE(a.Start());
   EXPECT_EQ("ThreadName", a.thread_name());
 }
+
+// Make sure we can't use a thread between Start() and Init().
+TEST_F(ThreadTest, SleepInsideInit) {
+  SleepInsideInitThread t;
+  EXPECT_FALSE(t.InitCalled());
+  t.Start();
+  EXPECT_TRUE(t.InitCalled());
+}
+