| /* |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #include <atomic> |
| #include <functional> |
| #include <mutex> |
| #include <stdint.h> |
| #include <unordered_map> |
| |
| class NetlinkMessage; |
| |
| class Netlink { |
| public: |
| using ReplyHandler = std::function<void (const NetlinkMessage&)>; |
| using StopHandler = std::function<void ()>; |
| Netlink(); |
| ~Netlink(); |
| |
| bool init(); |
| void stop(StopHandler stopHandler); |
| |
| bool eventLoop(); |
| |
| uint32_t getSequenceNumber(); |
| |
| bool sendMessage(const NetlinkMessage& message, ReplyHandler handler); |
| private: |
| Netlink(const Netlink&) = delete; |
| Netlink& operator=(const Netlink&) = delete; |
| |
| bool readNetlinkMessage(int fd); |
| bool readControlMessage(); |
| |
| void notifyHandler(const char* data, size_t size); |
| |
| std::atomic<uint32_t> mNextSequenceNumber; |
| int mSocket; |
| int mControlPipe[2]; |
| // Map sequence number to reply handler |
| std::unordered_map<uint32_t, ReplyHandler> mHandlers; |
| std::mutex mHandlersMutex; |
| std::mutex mStopHandlerMutex; |
| StopHandler mStopHandler; |
| }; |
| |