1 // 2 // Copyright (C) 2016 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 #include "update_engine/dbus_connection.h" 18 19 #include <base/time/time.h> 20 21 namespace chromeos_update_engine { 22 23 namespace { 24 const int kDBusSystemMaxWaitSeconds = 2 * 60; 25 26 DBusConnection* dbus_connection_singleton = nullptr; 27 } // namespace 28 29 DBusConnection::DBusConnection() { 30 // We wait for the D-Bus connection for up two minutes to avoid re-spawning 31 // the daemon too fast causing thrashing if dbus-daemon is not running. 32 bus_ = dbus_connection_.ConnectWithTimeout( 33 base::TimeDelta::FromSeconds(kDBusSystemMaxWaitSeconds)); 34 35 if (!bus_) { 36 // TODO(deymo): Make it possible to run update_engine even if dbus-daemon 37 // is not running or constantly crashing. 38 LOG(FATAL) << "Failed to initialize DBus, aborting."; 39 } 40 41 CHECK(bus_->SetUpAsyncOperations()); 42 } 43 44 const scoped_refptr<dbus::Bus>& DBusConnection::GetDBus() { 45 CHECK(bus_); 46 return bus_; 47 } 48 49 DBusConnection* DBusConnection::Get() { 50 if (!dbus_connection_singleton) 51 dbus_connection_singleton = new DBusConnection(); 52 return dbus_connection_singleton; 53 } 54 55 } // namespace chromeos_update_engine 56
