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#define LOG_TAG "VehicleMonitor.Lib" 17 18#include <assert.h> 19#include <binder/IServiceManager.h> 20#include <binder/ProcessState.h> 21 22#include <VehicleMonitor.h> 23 24namespace android { 25// ---------------------------------------------------------------------------- 26 27static const int MAX_SERVICE_RETRY = 4; 28 29sp<VehicleMonitor> VehicleMonitor::createVehicleMonitor() { 30 sp<IBinder> binder; 31 int retry = 0; 32 while (true) { 33 binder = defaultServiceManager()->getService(String16(IVehicleMonitor::SERVICE_NAME)); 34 if (binder.get() != NULL) { 35 break; 36 } 37 retry++; 38 if (retry > MAX_SERVICE_RETRY) { 39 ALOGE("cannot get VMS, will crash"); 40 break; 41 } 42 } 43 assert(binder.get() != NULL); 44 sp<IVehicleMonitor> ivm(interface_cast<IVehicleMonitor>(binder)); 45 sp<VehicleMonitor> vm; 46 vm = new VehicleMonitor(ivm); 47 assert(vm.get() != NULL); 48 // in case thread pool is not started, start it. 49 ProcessState::self()->startThreadPool(); 50 return vm; 51} 52 53VehicleMonitor::VehicleMonitor(sp<IVehicleMonitor>& vehicleMonitor) : 54 mService(vehicleMonitor) { 55} 56 57VehicleMonitor::~VehicleMonitor() { 58 sp<IVehicleMonitor> service = getService(); 59 IInterface::asBinder(service)->unlinkToDeath(this); 60} 61 62void VehicleMonitor::onFirstRef() { 63 sp<IVehicleMonitor> service = getService(); 64 IInterface::asBinder(service)->linkToDeath(this); 65} 66 67status_t VehicleMonitor::setAppPriority( 68 uint32_t pid, uint32_t uid, vehicle_app_priority priority) { 69 return getService()->setAppPriority(pid, uid, priority); 70} 71 72void VehicleMonitor::binderDied(const wp<IBinder>& who) { 73 ALOGE("service died"); 74 { 75 Mutex::Autolock autoLock(mLock); 76 sp<IBinder> ibinder = who.promote(); 77 ibinder->unlinkToDeath(this); 78 sp<IBinder> binder = defaultServiceManager()->getService( 79 String16(IVehicleMonitor::SERVICE_NAME)); 80 mService = interface_cast<IVehicleMonitor>(binder); 81 IInterface::asBinder(mService)->linkToDeath(this); 82 }; 83} 84 85sp<IVehicleMonitor> VehicleMonitor::getService() { 86 Mutex::Autolock autoLock(mLock); 87 return mService; 88} 89 90}; // namespace android 91