1 // 2 // Copyright (C) 2015 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 17 #ifndef UPDATE_ENGINE_CROS_DAEMON_CHROMEOS_H_ 18 #define UPDATE_ENGINE_CROS_DAEMON_CHROMEOS_H_ 19 20 #include <memory> 21 22 #include "update_engine/common/daemon_base.h" 23 #include "update_engine/common/daemon_state_interface.h" 24 #include "update_engine/common/subprocess.h" 25 #include "update_engine/cros/dbus_service.h" 26 #include "update_engine/cros/real_system_state.h" 27 28 namespace chromeos_update_engine { 29 30 class DaemonChromeOS : public DaemonBase { 31 public: 32 DaemonChromeOS() = default; 33 34 protected: 35 int OnInit() override; 36 37 private: 38 // Run from the main loop when the |dbus_adaptor_| object is registered. At 39 // this point we can request ownership of the DBus service name and continue 40 // initialization. 41 void OnDBusRegistered(bool succeeded); 42 43 // |SystemState| is a global context, but we can't have a static singleton of 44 // its object because the style guide does not allow that (it has non-trivial 45 // dtor). We need an instance of |SystemState| in this class instead and have 46 // a global pointer to it. This is better to be defined as the first variable 47 // of this class so it is initialized first and destructed last. 48 RealSystemState system_state_; 49 50 // Main D-Bus service adaptor. 51 std::unique_ptr<UpdateEngineAdaptor> dbus_adaptor_; 52 53 // The Subprocess singleton class requires a brillo::MessageLoop in the 54 // current thread, so we need to initialize it from this class instead of 55 // the main() function. 56 Subprocess subprocess_; 57 58 DISALLOW_COPY_AND_ASSIGN(DaemonChromeOS); 59 }; 60 61 } // namespace chromeos_update_engine 62 63 #endif // UPDATE_ENGINE_CROS_DAEMON_CHROMEOS_H_ 64