1 /* 2 * Copyright (C) 2017 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 ANDROID_SENSOR_DEVICE_UTIL 18 #define ANDROID_SENSOR_DEVICE_UTIL 19 20 #include <android/hidl/manager/1.0/IServiceNotification.h> 21 22 #include <condition_variable> 23 #include <thread> 24 25 using ::android::hardware::hidl_string; 26 using ::android::hardware::Return; 27 using ::android::hidl::manager::V1_0::IServiceNotification; 28 29 namespace android { 30 namespace SensorDeviceUtils { 31 32 class HidlServiceRegistrationWaiter : public IServiceNotification { 33 public: 34 35 HidlServiceRegistrationWaiter(); 36 37 Return<void> onRegistration(const hidl_string &fqName, 38 const hidl_string &name, 39 bool preexisting) override; 40 41 void reset(); 42 43 /** 44 * Wait for service restart 45 * 46 * @return true if service is restart since last reset(); false otherwise. 47 */ 48 bool wait(); 49 protected: 50 void onFirstRef() override; 51 private: 52 bool mRegistered; 53 54 std::mutex mLock; 55 std::condition_variable mCondition; 56 bool mRestartObserved; 57 }; 58 59 } // namespace SensorDeviceUtils 60 } // namespace android; 61 62 #endif // ANDROID_SENSOR_SERVICE_UTIL 63
