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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 <atomic>
#include <base/files/file_path.h>
#include <base/files/scoped_file.h>
#include <base/threading/thread.h>
#include "service/ipc/ipc_handler.h"
#include "service/ipc/ipc_manager.h"
namespace base {
class SingleThreadTaskRunner;
} // namespace base
namespace ipc {
// Implements a Linux sequential packet domain-socket based IPCHandler
class IPCHandlerLinux : public IPCHandler {
public:
IPCHandlerLinux(bluetooth::Adapter* adapter, IPCManager::Delegate* delegate);
IPCHandlerLinux(const IPCHandlerLinux&) = delete;
IPCHandlerLinux& operator=(const IPCHandlerLinux&) = delete;
~IPCHandlerLinux() override;
// IPCHandler overrides:
bool Run() override;
void Stop() override;
private:
IPCHandlerLinux() = default;
// Starts listening for incoming connections. Posted on |thread_| by Run().
void StartListeningOnThread();
// Stops the IPC thread. This helper is needed since base::Thread requires
// threads to be stopped on the thread that started them.
void ShutDownOnOriginThread();
// Notifies the delegate that we started or stoppedlistening for incoming
// connections.
void NotifyStartedOnOriginThread();
void NotifyStartedOnCurrentThread();
void NotifyStoppedOnOriginThread();
void NotifyStoppedOnCurrentThread();
// True, if the IPC mechanism is running.
#if defined(__APPLE__)
bool running_ ATTRIBUTE_UNUSED;
#else
bool running_;
#endif
// The server socket on which we listen to incoming connections.
base::ScopedFD socket_;
// The file path to |socket_|. This is only set if we create and manage the
// life time of the socket.
base::FilePath socket_path_;
// We use a dedicated thread for listening to incoming connections and
// polling from the socket to avoid blocking the main thread.
base::Thread thread_;
// Whether or not the listening thread should continue to run.
std::atomic<bool> keep_running_;
// The origin thread's task runner.
scoped_refptr<base::SingleThreadTaskRunner> origin_task_runner_;
};
} // namespace ipc
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