| /* |
| * Copyright (C) 2021 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 <functional> |
| #include <memory> |
| #include <string> |
| |
| #include <android-base/result.h> |
| #include <android-base/unique_fd.h> |
| |
| namespace android { |
| namespace trusty { |
| namespace metrics { |
| |
| using android::base::Result; |
| using android::base::unique_fd; |
| |
| class TrustyMetrics { |
| public: |
| /* Wait for next event with a given timeout. Negative timeout means infinite timeout. */ |
| Result<void> WaitForEvent(int timeout_ms = -1); |
| /* Attempt to handle an event from Metrics TA in a non-blocking manner. */ |
| Result<void> HandleEvent(); |
| /* Expose TIPC channel so that client can integrate it into an event loop with other fds. */ |
| int GetRawFd() { return metrics_fd_; }; |
| |
| protected: |
| TrustyMetrics(std::string tipc_dev) : tipc_dev_(std::move(tipc_dev)), metrics_fd_(-1) {} |
| virtual ~TrustyMetrics(){}; |
| |
| Result<void> Open(); |
| virtual void HandleCrash(const std::string& app_id) = 0; |
| virtual void HandleEventDrop() = 0; |
| |
| private: |
| std::string tipc_dev_; |
| unique_fd metrics_fd_; |
| }; |
| |
| } // namespace metrics |
| } // namespace trusty |
| } // namespace android |