Microbenchmark for the cost of posting tasks to different pump types

base/android/java_handler_thread.cc

 // Copyright 2013 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/android/java_handler_thread.h"
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 26 matching lines @@
                                java_thread_.obj(),
                                reinterpret_cast<intptr_t>(this),
                                reinterpret_cast<intptr_t>(&initialize_event));
   // Wait for thread to be initialized so it is ready to be used when Start
   // returns.
   base::ThreadRestrictions::ScopedAllowWait wait_allowed;
   initialize_event.Wait();
 }
 
 void JavaHandlerThread::Stop() {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  base::WaitableEvent shutdown_event(false, false);
+  Java_JavaHandlerThread_stop(env,
+                              java_thread_.obj(),
+                              reinterpret_cast<intptr_t>(this),
+                              reinterpret_cast<intptr_t>(&shutdown_event));
+  // Wait for thread to shut down before returning.
+  base::ThreadRestrictions::ScopedAllowWait wait_allowed;
+  shutdown_event.Wait();
 }
 
 void JavaHandlerThread::InitializeThread(JNIEnv* env, jobject obj,
                                          jlong event) {
   // TYPE_JAVA to get the Android java style message loop.
   message_loop_.reset(new base::MessageLoop(base::MessageLoop::TYPE_JAVA));
   static_cast<MessageLoopForUI*>(message_loop_.get())->Start();
   reinterpret_cast<base::WaitableEvent*>(event)->Signal();
 }
 
+void JavaHandlerThread::StopThread(JNIEnv* env, jobject obj, jlong event) {
+  static_cast<MessageLoopForUI*>(message_loop_.get())->Quit();
+  reinterpret_cast<base::WaitableEvent*>(event)->Signal();
+}
+
 // static
 bool JavaHandlerThread::RegisterBindings(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 } // namespace android
 } // namespace base