blob: 1c22fd66bd359c23017787d350ce0467e73e188e [file] [log] [blame]
// Copyright 2016 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.
#ifndef BLIMP_NET_THREAD_PIPE_MANAGER_H_
#define BLIMP_NET_THREAD_PIPE_MANAGER_H_
#include <memory>
#include <vector>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/sequence_checker.h"
#include "blimp/common/proto/blimp_message.pb.h"
#include "blimp/net/blimp_net_export.h"
namespace base {
class SequencedTaskRunner;
} // namespace base
namespace blimp {
class BlimpMessageProcessor;
class BlimpMessageThreadPipe;
class BrowserConnectionHandler;
class ConnectionThreadPipeManager;
// Manages routing of messages between a |connection_manager| operating on one
// SequencedTaskRunner, and per-feature message processors running on the same
// TaskRunner as the caller. This is used to allow Blimp feature implementations
// to operate on the UI thread, with network I/O delegated to an IO thread.
class BLIMP_NET_EXPORT ThreadPipeManager {
public:
// Caller is responsible for ensuring that |connection_handler| outlives
// |this|.
explicit ThreadPipeManager(
const scoped_refptr<base::SequencedTaskRunner>& connection_task_runner,
BrowserConnectionHandler* connection_handler);
~ThreadPipeManager();
// Registers a message processor |incoming_processor| which will receive all
// messages of the |feature_case| specified. Returns a BlimpMessageProcessor
// object for sending messages of the given feature.
std::unique_ptr<BlimpMessageProcessor> RegisterFeature(
BlimpMessage::FeatureCase feature_case,
BlimpMessageProcessor* incoming_processor);
private:
scoped_refptr<base::SequencedTaskRunner> connection_task_runner_;
// Container for BlimpMessageThreadPipes that are destroyed on IO thread.
std::unique_ptr<ConnectionThreadPipeManager> connection_pipe_manager_;
// Pipes for routing incoming messages from the connection's task runner
// to handlers on the caller's task runner.
std::vector<std::unique_ptr<BlimpMessageThreadPipe>> incoming_pipes_;
base::SequenceChecker sequence_checker_;
DISALLOW_COPY_AND_ASSIGN(ThreadPipeManager);
};
} // namespace blimp
#endif // BLIMP_NET_THREAD_PIPE_MANAGER_H_