1 /* 2 * Copyright (C) 2019 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 <memory> 18 #include <string_view> 19 20 #include <health/utils.h> 21 #include <health2impl/Health.h> 22 23 using ::android::sp; 24 using ::android::hardware::health::InitHealthdConfig; 25 using ::android::hardware::health::V2_1::IHealth; 26 using ::android::hardware::health::V2_1::implementation::Health; 27 28 using namespace std::literals; 29 30 // Passthrough implementation of the health service. Use default configuration. 31 // It does not invoke callbacks unless update() is called explicitly. No 32 // background thread is spawned to handle callbacks. 33 // 34 // The passthrough implementation is only allowed in recovery mode, charger, and 35 // opened by the hwbinder service. 36 // If Android is booted normally, the hwbinder service is used instead. 37 // 38 // This implementation only implements the "default" instance. It rejects 39 // other instance names. 40 // Note that the Android framework only reads values from the "default" 41 // health HAL 2.1 instance. HIDL_FETCH_IHealth(const char * instance)42extern "C" IHealth* HIDL_FETCH_IHealth(const char* instance) { 43 if (instance != "default"sv) { 44 return nullptr; 45 } 46 auto config = std::make_unique<healthd_config>(); 47 InitHealthdConfig(config.get()); 48 49 // This implementation uses default config. If you want to customize it 50 // (e.g. with healthd_board_init), do it here. 51 52 return new Health(std::move(config)); 53 } 54