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//
// Copyright 2015 Google, Inc.
//
// 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.
//
#pragma once
#include <base/macros.h>
#include <base/message_loop/message_loop.h>
namespace ipc {
class IPCManager;
} // namespace ipc
namespace bluetooth {
class CoreStack;
class Settings;
// The Daemon class is a singleton that represents the root of the ownership
// hierarchy. The single instance sets up and owns the main event loop, the IPC
// handlers, global Settings, and the core Bluetooth stack.
class Daemon {
public:
// Initializes the daemon. This must be called to at the start of the
// application to set up the global daemon instance and everything it manages.
// Returns false in case of a failure.
static bool Initialize();
// Cleans up all the resources associated with the global Daemon object.
static void ShutDown();
// Assigns the global Daemon instance for testing. Should only be called from
// test code.
static void InitializeForTesting(Daemon* test_daemon);
// Returns the singleton Daemon instance. All classes can interact with the
// Daemon, obtain its resources etc using this getter.
static Daemon* Get();
// The global Settings object. All classes have direct access to this through
// the Daemon object.
virtual Settings* GetSettings() const = 0;
// The main event loop. This should be used for any events and delayed tasks
// that should be executed on the daemon's main thread.
virtual base::MessageLoop* GetMessageLoop() const = 0;
// Starts the daemon's main loop.
virtual void StartMainLoop() = 0;
protected:
Daemon() = default;
virtual ~Daemon() = default;
private:
// Internal instance helper called by Initialize().
virtual bool Init() = 0;
DISALLOW_COPY_AND_ASSIGN(Daemon);
};
} // namespace bluetooth
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