Refactoring out the chromoting jni runtime class in favor of chromoting client runtime.

remoting/client/jni/jni_runtime_delegate.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 "remoting/client/jni/jni_runtime_delegate.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_array.h"
+#include "base/android/jni_string.h"
+#include "base/android/library_loader/library_loader_hooks.h"
+#include "base/android/scoped_java_ref.h"
+#include "base/command_line.h"
+#include "base/memory/ptr_util.h"
+#include "base/memory/singleton.h"
+#include "base/stl_util.h"
+#include "base/synchronization/waitable_event.h"
+#include "base/task_scheduler/task_scheduler.h"
+#include "jni/JniInterface_jni.h"
+#include "remoting/base/chromium_url_request.h"
+#include "remoting/base/url_request_context_getter.h"
+#include "remoting/client/jni/jni_touch_event_data.h"
+
+using base::android::ConvertJavaStringToUTF8;
+using base::android::ConvertUTF8ToJavaString;
+using base::android::JavaParamRef;
+using base::android::ToJavaByteArray;
+
+namespace remoting {
+
+bool RegisterJniRuntimeDelegate(JNIEnv* env) {
+  return remoting::RegisterNativesImpl(env);
+}
+
+// Implementation of stubs defined in JniInterface_jni.h. These are the entry
+// points for JNI calls from Java into C++.
+
+static void LoadNative(JNIEnv* env, const JavaParamRef<jclass>& clazz) {
+  base::CommandLine::Init(0, nullptr);
+
+  // Create the singleton now so that the Chromoting threads will be set up.
+  ChromotingClientRuntime* runtime =
+      remoting::ChromotingClientRuntime::GetInstance();
+  JniRuntimeDelegate* delegate = remoting::JniRuntimeDelegate::GetInstance();
+  runtime->SetDelegate(delegate);
+}
+
+static void HandleAuthTokenOnNetworkThread(const std::string& token) {
+  ChromotingClientRuntime* runtime =
+      remoting::ChromotingClientRuntime::GetInstance();
+  DCHECK(runtime->network_task_runner()->BelongsToCurrentThread());
+  runtime->GetLogWriter()->SetAuthToken(token);
+}
+
+static void OnAuthTokenFetched(JNIEnv* env,
+                               const JavaParamRef<jclass>& clazz,
+                               const JavaParamRef<jstring>& token) {
+  ChromotingClientRuntime* runtime =
+      remoting::ChromotingClientRuntime::GetInstance();
+  runtime->network_task_runner()->PostTask(
+      FROM_HERE, base::Bind(&HandleAuthTokenOnNetworkThread,
+                            ConvertJavaStringToUTF8(env, token)));
+}
+
+// JniRuntimeDelegate implementation.
+
+// static
+JniRuntimeDelegate* JniRuntimeDelegate::GetInstance() {
+  return base::Singleton<JniRuntimeDelegate>::get();
+}
+
+JniRuntimeDelegate::JniRuntimeDelegate() {
+  runtime_ = ChromotingClientRuntime::GetInstance();
+}
+
+JniRuntimeDelegate::~JniRuntimeDelegate() {
+  runtime_ = nullptr;
+}
+
+void JniRuntimeDelegate::RuntimeWillShutdown() {
+  DCHECK(runtime_->ui_task_runner()->BelongsToCurrentThread());
+
+  base::WaitableEvent done_event(
+      base::WaitableEvent::ResetPolicy::AUTOMATIC,
+      base::WaitableEvent::InitialState::NOT_SIGNALED);
+  runtime_->network_task_runner()->PostTask(
+      FROM_HERE, base::Bind(&JniRuntimeDelegate::DetachFromVmAndSignal,
+                            base::Unretained(this), &done_event));
+  done_event.Wait();
+  runtime_->display_task_runner()->PostTask(
+      FROM_HERE, base::Bind(&JniRuntimeDelegate::DetachFromVmAndSignal,
+                            base::Unretained(this), &done_event));
+  done_event.Wait();
+
+  // Block until tasks blocking shutdown have completed their execution.
+  base::TaskScheduler::GetInstance()->Shutdown();

[Yuwei, 2017/03/10 20:18:53]

I feel it's weird to create the TaskScheduler in the runtime and shut it down in
the delegate.

[nicholss, 2017/03/10 20:53:11]

Maybe I need to add a RuntimeDidShutdown method for the delegate to deal with
this. Not a bad idea.

+
+  base::android::LibraryLoaderExitHook();
+  base::android::DetachFromVM();
+}
+
+void JniRuntimeDelegate::RequestAuthTokenForLogger() {
+  if (!runtime_->ui_task_runner()->BelongsToCurrentThread()) {
+    runtime_->ui_task_runner()->PostTask(
+        FROM_HERE, base::Bind(&JniRuntimeDelegate::RequestAuthTokenForLogger,
+                              base::Unretained(this)));
+    return;
+  }
+  JNIEnv* env = base::android::AttachCurrentThread();
+
+  // TODO(nicholss): I do not like this method name, change it soon.
+  Java_JniInterface_fetchAuthToken(env);
+}
+
+void JniRuntimeDelegate::DetachFromVmAndSignal(base::WaitableEvent* waiter) {
+  base::android::DetachFromVM();
+  waiter->Signal();
+}
+
+}  // namespace remoting