Lazily initialize MessageLoop for faster thread startup

base/threading/thread_id_name_manager_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/threading/thread_id_name_manager.h"
 
+#include "base/synchronization/waitable_event.h"
 #include "base/threading/platform_thread.h"
 #include "base/threading/thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 typedef PlatformTest ThreadIdNameManagerTest;
 
 namespace {
 
 const char kAThread[] = "a thread";
 const char kBThread[] = "b thread";
 
 TEST_F(ThreadIdNameManagerTest, AddThreads) {
   base::ThreadIdNameManager* manager = base::ThreadIdNameManager::GetInstance();
   base::Thread thread_a(kAThread);
   base::Thread thread_b(kBThread);
 
-  thread_a.Start();
-  thread_b.Start();
+  thread_a.StartAndWait();
+  thread_b.StartAndWait();
 
   EXPECT_STREQ(kAThread, manager->GetName(thread_a.thread_id()));
   EXPECT_STREQ(kBThread, manager->GetName(thread_b.thread_id()));
 
   thread_b.Stop();
   thread_a.Stop();
 }
 
 TEST_F(ThreadIdNameManagerTest, RemoveThreads) {
   base::ThreadIdNameManager* manager = base::ThreadIdNameManager::GetInstance();
   base::Thread thread_a(kAThread);
 
-  thread_a.Start();
+  thread_a.StartAndWait();
   {
     base::Thread thread_b(kBThread);
-    thread_b.Start();
+    thread_b.StartAndWait();
     thread_b.Stop();
   }
   EXPECT_STREQ(kAThread, manager->GetName(thread_a.thread_id()));
 
   thread_a.Stop();
   EXPECT_STREQ("", manager->GetName(thread_a.thread_id()));
 }
 
 TEST_F(ThreadIdNameManagerTest, RestartThread) {
   base::ThreadIdNameManager* manager = base::ThreadIdNameManager::GetInstance();
   base::Thread thread_a(kAThread);
 
-  thread_a.Start();
+  thread_a.StartAndWait();
   base::PlatformThreadId a_id = thread_a.thread_id();
   EXPECT_STREQ(kAThread, manager->GetName(a_id));
   thread_a.Stop();
 
-  thread_a.Start();
+  thread_a.StartAndWait();
   EXPECT_STREQ("", manager->GetName(a_id));
   EXPECT_STREQ(kAThread, manager->GetName(thread_a.thread_id()));
   thread_a.Stop();
 }
 
 TEST_F(ThreadIdNameManagerTest, ThreadNameInterning) {
   base::ThreadIdNameManager* manager = base::ThreadIdNameManager::GetInstance();
 
   base::PlatformThreadId a_id = base::PlatformThread::CurrentId();
   base::PlatformThread::SetName("First Name");
@@ skipping 14 matching lines @@
   base::PlatformThread::SetName("New name");
   EXPECT_NE(version, manager->GetName(a_id));
 
   base::PlatformThread::SetName("Test Name");
   EXPECT_EQ(version, manager->GetName(a_id));
 
   base::PlatformThread::SetName("");
 }
 
 }  // namespace