brillo/binder_watcher.h

/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef LIBBRILLO_BRILLO_BINDER_WATCHER_H_
#define LIBBRILLO_BRILLO_BINDER_WATCHER_H_

#include <base/macros.h>
#include <brillo/message_loops/message_loop.h>

namespace brillo {

// Bridge between libbinder and brillo::MessageLoop. Construct at startup to
// make the message loop watch for binder events and pass them to libbinder.
class BinderWatcher final {
 public:
  // Construct the BinderWatcher using the passed |message_loop| if not null or
  // the current MessageLoop otherwise.
  explicit BinderWatcher(MessageLoop* message_loop);
  BinderWatcher();
  ~BinderWatcher();

  // Initializes the object, returning true on success.
  bool Init();

 private:
  MessageLoop::TaskId task_id_{MessageLoop::kTaskIdNull};
  MessageLoop* message_loop_;

  DISALLOW_COPY_AND_ASSIGN(BinderWatcher);
};

}  // namespace brillo

#endif  // LIBBRILLO_BRILLO_BINDER_WATCHER_H_