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      1 //
      2 //  Copyright (C) 2015 Google, Inc.
      3 //
      4 //  Licensed under the Apache License, Version 2.0 (the "License");
      5 //  you may not use this file except in compliance with the License.
      6 //  You may obtain a copy of the License at:
      7 //
      8 //  http://www.apache.org/licenses/LICENSE-2.0
      9 //
     10 //  Unless required by applicable law or agreed to in writing, software
     11 //  distributed under the License is distributed on an "AS IS" BASIS,
     12 //  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 //  See the License for the specific language governing permissions and
     14 //  limitations under the License.
     15 //
     16 
     17 #include "service/ipc/binder/ipc_handler_binder.h"
     18 
     19 #include <base/bind.h>
     20 #include <base/logging.h>
     21 #include <base/message_loop/message_loop.h>
     22 #include <binder/IPCThreadState.h>
     23 #include <binder/IServiceManager.h>
     24 #include <binder/ProcessState.h>
     25 
     26 #include "service/ipc/binder/bluetooth_binder_server.h"
     27 
     28 using android::defaultServiceManager;
     29 using android::sp;
     30 using android::status_t;
     31 using android::String16;
     32 
     33 namespace ipc {
     34 
     35 IPCHandlerBinder::IPCHandlerBinder(
     36     bluetooth::Adapter* adapter,
     37     IPCManager::Delegate* delegate)
     38     : IPCHandler(adapter, delegate) {
     39 }
     40 
     41 IPCHandlerBinder::~IPCHandlerBinder() {
     42 }
     43 
     44 bool IPCHandlerBinder::Run() {
     45   CHECK(adapter());
     46 
     47   // Register the IBluetooth service with the Android ServiceManager.
     48   android::sp<binder::BluetoothBinderServer> bt_server =
     49       new binder::BluetoothBinderServer(adapter());
     50   status_t status = defaultServiceManager()->addService(
     51       String16(binder::IBluetooth::kServiceName),
     52       bt_server);
     53   if (status != android::NO_ERROR) {
     54     LOG(ERROR) << "Failed to register Bluetooth service with ServiceManager";
     55     return false;
     56   }
     57 
     58   // Notify the delegate. We do this in the message loop to avoid reentrancy.
     59   if (delegate()) {
     60     base::MessageLoop::current()->task_runner()->PostTask(
     61         FROM_HERE,
     62         base::Bind(&IPCHandlerBinder::NotifyStarted, this));
     63   }
     64 
     65   android::ProcessState::self()->startThreadPool();
     66 
     67   return true;
     68 }
     69 
     70 void IPCHandlerBinder::Stop() {
     71   // TODO(armansito): There are several methods in android::IPCThreadState that
     72   // are related to shutting down the threadpool, however I haven't been able to
     73   // make them shut things down cleanly. Figure out the right way to stop the
     74   // Binder IPC here.
     75 }
     76 
     77 void IPCHandlerBinder::NotifyStarted() {
     78   if (delegate())
     79     delegate()->OnIPCHandlerStarted(IPCManager::TYPE_BINDER);
     80 }
     81 
     82 }  // namespace ipc
     83