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/*
* Copyright (C) 2017 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 SRC_IPC_HOST_IMPL_H_
#define SRC_IPC_HOST_IMPL_H_
#include <map>
#include <set>
#include <string>
#include <vector>
#include "perfetto/base/task_runner.h"
#include "perfetto/ext/base/thread_checker.h"
#include "perfetto/ext/base/unix_socket.h"
#include "perfetto/ext/ipc/deferred.h"
#include "perfetto/ext/ipc/host.h"
#include "src/ipc/buffered_frame_deserializer.h"
namespace perfetto {
namespace ipc {
class HostImpl : public Host, public base::UnixSocket::EventListener {
public:
HostImpl(const char* socket_name, base::TaskRunner*);
HostImpl(base::ScopedSocketHandle, base::TaskRunner*);
~HostImpl() override;
// Host implementation.
bool ExposeService(std::unique_ptr<Service>) override;
// base::UnixSocket::EventListener implementation.
void OnNewIncomingConnection(base::UnixSocket*,
std::unique_ptr<base::UnixSocket>) override;
void OnDisconnect(base::UnixSocket*) override;
void OnDataAvailable(base::UnixSocket*) override;
const base::UnixSocket* sock() const { return sock_.get(); }
private:
// Owns the per-client receive buffer (BufferedFrameDeserializer).
struct ClientConnection {
~ClientConnection();
ClientID id;
std::unique_ptr<base::UnixSocket> sock;
BufferedFrameDeserializer frame_deserializer;
base::ScopedFile received_fd;
};
struct ExposedService {
ExposedService(ServiceID, const std::string&, std::unique_ptr<Service>);
~ExposedService();
ExposedService(ExposedService&&) noexcept;
ExposedService& operator=(ExposedService&&);
ServiceID id;
std::string name;
std::unique_ptr<Service> instance;
};
HostImpl(const HostImpl&) = delete;
HostImpl& operator=(const HostImpl&) = delete;
bool Initialize(const char* socket_name);
void OnReceivedFrame(ClientConnection*, const Frame&);
void OnBindService(ClientConnection*, const Frame&);
void OnInvokeMethod(ClientConnection*, const Frame&);
void ReplyToMethodInvocation(ClientID, RequestID, AsyncResult<ProtoMessage>);
const ExposedService* GetServiceByName(const std::string&);
static void SendFrame(ClientConnection*, const Frame&, int fd = -1);
base::TaskRunner* const task_runner_;
std::map<ServiceID, ExposedService> services_;
std::unique_ptr<base::UnixSocket> sock_; // The listening socket.
std::map<ClientID, std::unique_ptr<ClientConnection>> clients_;
std::map<base::UnixSocket*, ClientConnection*> clients_by_socket_;
ServiceID last_service_id_ = 0;
ClientID last_client_id_ = 0;
PERFETTO_THREAD_CHECKER(thread_checker_)
base::WeakPtrFactory<HostImpl> weak_ptr_factory_; // Keep last.
};
} // namespace ipc
} // namespace perfetto
#endif // SRC_IPC_HOST_IMPL_H_