| /* |
| * Copyright (C) 2020 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. |
| */ |
| |
| /** |
| * @file |
| * The daemon that hosts CHRE on a hexagon DSP via FastRPC. This is typically |
| * the SLPI but could be the ADSP or another DSP that supports FastRPC. |
| */ |
| |
| #ifndef CHRE_FASTRPC_DAEMON_H_ |
| #define CHRE_FASTRPC_DAEMON_H_ |
| |
| #include "chre/platform/slpi/fastrpc.h" |
| #include "chre_host/fbs_daemon_base.h" |
| #include "chre_host/st_hal_lpma_handler.h" |
| |
| #include <utils/SystemClock.h> |
| #include <atomic> |
| #include <optional> |
| #include <thread> |
| |
| namespace android { |
| namespace chre { |
| |
| class FastRpcChreDaemon : public FbsDaemonBase { |
| public: |
| FastRpcChreDaemon(); |
| |
| ~FastRpcChreDaemon() { |
| deinit(); |
| } |
| |
| /** |
| * Initializes and starts the monitoring and message handling threads, |
| * then proceeds to load any preloaded nanoapps. Also starts LPMA if |
| * it's enabled. |
| * |
| * @return true on successful init |
| */ |
| bool init(); |
| |
| /** |
| * Starts a socket server receive loop for inbound messages. |
| */ |
| void run(); |
| |
| protected: |
| bool doSendMessage(void *data, size_t length) override; |
| |
| void configureLpma(bool enabled) override { |
| mLpmaHandler.enable(enabled); |
| } |
| |
| private: |
| std::optional<std::thread> mMonitorThread; |
| std::optional<std::thread> mMsgToHostThread; |
| std::atomic_bool mCrashDetected = false; |
| StHalLpmaHandler mLpmaHandler; |
| |
| /** |
| * Shutsdown the daemon, stops all the worker threads created in init() |
| * Since this is to be invoked at exit, it's mostly best effort, and is |
| * invoked by the class destructor |
| */ |
| void deinit(); |
| |
| /** |
| * Platform specific getTimeOffset for the FastRPC daemon |
| * |
| * @return clock drift offset in nanoseconds |
| */ |
| int64_t getTimeOffset(bool *success) override; |
| |
| /** |
| * Entry point for the thread that blocks in a FastRPC call to monitor for |
| * abnormal exit of CHRE or reboot of the DSP. |
| */ |
| void monitorThreadEntry(); |
| |
| /** |
| * Entry point for the thread that receives messages sent by CHRE. |
| */ |
| void msgToHostThreadEntry(); |
| |
| /** |
| * Handles the case where the remote end (SLPI, ADSP, etc) has crashed. |
| */ |
| void onRemoteCrashDetected(); |
| }; |
| |
| } // namespace chre |
| } // namespace android |
| |
| #endif // CHRE_FASTRPC_DAEMON_H_ |