| /* |
| * 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 <condition_variable> |
| #include <memory> |
| #include <thread> |
| #include <vector> |
| |
| #include <netlink/msg.h> |
| |
| namespace cvd { |
| constexpr int kWifiSimVersion = 1; |
| |
| class Cmd { |
| public: |
| Cmd(); |
| explicit Cmd(nlmsghdr* h); |
| explicit Cmd(nl_msg* h); |
| ~Cmd(); |
| |
| // Cmd() creates netlink request to be sent to kernel. |
| // Returns netlink message header structure. |
| nl_msg* Msg() const { return msg_; } |
| |
| // Responses() holds execution until netlink responds to this message. |
| // Returns all netlink replies. |
| const std::vector<nl_msg*> Responses() const; |
| |
| // OnResponse() handles data response from netlink. |
| // Returns value indicating 'done' state: |
| // - false, if more data is expected, or |
| // - true, if processing is complete and instance can be disposed of. |
| bool OnResponse(nl_msg* msg); |
| |
| // Wait until message processing is complete. |
| void WaitComplete() const; |
| |
| private: |
| nl_msg* msg_; |
| std::vector<nl_msg*> responses_; |
| |
| mutable std::mutex ready_mutex_; |
| mutable std::condition_variable ready_signal_; |
| |
| Cmd(const Cmd&) = delete; |
| Cmd& operator=(const Cmd&) = delete; |
| }; |
| |
| } // namespace cvd |