1 /* 2 * Copyright (C) 2021 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #pragma once 17 18 #include <memory> 19 #include <thread> 20 21 #include "common/libs/fs/shared_fd.h" 22 #include "host/commands/run_cvd/runner_defs.h" 23 24 namespace cuttlefish { 25 26 // Maintains the state of the boot process, once a final state is reached 27 // (success or failure) it sends the appropriate exit code to the foreground 28 // launcher process 29 class CvdBootStateMachine { 30 public: 31 CvdBootStateMachine(SharedFD fg_launcher_pipe, SharedFD reboot_notification, 32 SharedFD boot_events_pipe); 33 ~CvdBootStateMachine(); 34 35 private: 36 // Returns true if the machine is left in a final state 37 bool OnBootEvtReceived(SharedFD boot_events_pipe); 38 bool BootCompleted() const; 39 bool BootFailed() const; 40 41 void SendExitCode(RunnerExitCodes exit_code, SharedFD fd); 42 bool MaybeWriteNotification(); 43 44 std::thread boot_event_handler_; 45 SharedFD fg_launcher_pipe_; 46 SharedFD reboot_notification_; 47 int state_; 48 static const int kBootStarted = 0; 49 static const int kGuestBootCompleted = 1 << 0; 50 static const int kGuestBootFailed = 1 << 1; 51 }; 52 53 } // namespace cuttlefish 54