Java content handler for Android.

mojo/android/system/base_run_loop.cc

+// Copyright 2015 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 "mojo/android/system/base_run_loop.h"
+
+#include <jni.h>
+
+#include "base/android/base_jni_registrar.h"
+#include "base/android/jni_android.h"
+#include "base/android/jni_registrar.h"
+#include "base/bind.h"
+#include "base/message_loop/message_loop.h"
+#include "jni/BaseRunLoop_jni.h"
+#include "mojo/common/message_pump_mojo.h"
+
+namespace mojo {
+namespace android {
+
+static jlong CreateBaseRunLoop(JNIEnv* env, jobject jcaller) {
+  base::MessageLoop* message_loop =
+      new base::MessageLoop(common::MessagePumpMojo::Create());
+  return reinterpret_cast<uintptr_t>(message_loop);
+}
+
+static void Run(JNIEnv* env, jobject jcaller, jlong runLoopID) {
+  reinterpret_cast<base::MessageLoop*>(runLoopID)->Run();
+}
+
+static void RunUntilIdle(JNIEnv* env, jobject jcaller, jlong runLoopID) {
+  reinterpret_cast<base::MessageLoop*>(runLoopID)->RunUntilIdle();
+}
+
+static void Quit(JNIEnv* env, jobject jcaller, jlong runLoopID) {
+  reinterpret_cast<base::MessageLoop*>(runLoopID)->Quit();
+}
+
+static void RunJavaRunnable(
+    base::android::ScopedJavaGlobalRef<jobject>* runnable_ref) {
+  Java_BaseRunLoop_runRunnable(base::android::AttachCurrentThread(),
+                               runnable_ref->Release());
+  delete runnable_ref;
+}
+
+static void PostDelayedTask(JNIEnv* env,
+                            jobject jcaller,
+                            jlong runLoopID,
+                            jobject runnable,
+                            jlong delay) {
+  base::android::ScopedJavaGlobalRef<jobject>* runnable_ref =
+      new base::android::ScopedJavaGlobalRef<jobject>();

[qsr, 2015/02/09 15:54:52]

Look if you can either directly pass a ScopedJavaGlobalRef (I think it should
work), or pass a scoped_ptr<base::android::ScopedJavaGlobalRef> instead of using
bare pointers.

[etiennej, 2015/02/09 16:41:29]

Done.

+  // ScopedJavaGlobalRef do not hold onto the env reference, so it is safe to
+  // use it across threads. |RunJavaRunnable| will acquire a new JNIEnv before
+  // running the Runnable.
+  runnable_ref->Reset(env, runnable);
+  reinterpret_cast<base::MessageLoop*>(runLoopID)
+      ->PostDelayedTask(FROM_HERE, base::Bind(&RunJavaRunnable, runnable_ref),
+                        base::TimeDelta::FromMicroseconds(delay));
+}
+
+static void DeleteMessageLoop(JNIEnv* env, jobject jcaller, jlong runLoopID) {
+  base::MessageLoop* message_loop =
+      reinterpret_cast<base::MessageLoop*>(runLoopID);
+  delete message_loop;
+}
+
+bool RegisterBaseRunLoop(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace android
+}  // namespace mojo
+
+