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      1 /*
      2  * Copyright (C) 2018 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 #define LOG_TAG "android.hardware.power.stats (at) 1.0-service-mock"
     18 
     19 #include <android/log.h>
     20 #include <hidl/HidlTransportSupport.h>
     21 
     22 #include "PowerStats.h"
     23 
     24 using android::OK;
     25 using android::sp;
     26 using android::status_t;
     27 
     28 // libhwbinder:
     29 using android::hardware::configureRpcThreadpool;
     30 using android::hardware::joinRpcThreadpool;
     31 
     32 // Generated HIDL files
     33 using android::hardware::power::stats::V1_0::IPowerStats;
     34 using android::hardware::power::stats::V1_0::PowerEntityStateResidencyResult;
     35 using android::hardware::power::stats::V1_0::PowerEntityStateSpace;
     36 using android::hardware::power::stats::V1_0::PowerEntityType;
     37 using android::hardware::power::stats::V1_0::implementation::IStateResidencyDataProvider;
     38 using android::hardware::power::stats::V1_0::implementation::PowerStats;
     39 
     40 class DefaultStateResidencyDataProvider : public IStateResidencyDataProvider {
     41    public:
     42     DefaultStateResidencyDataProvider(uint32_t id)
     43         : mPowerEntityId(id), mActiveStateId(0), mSleepStateId(1) {}
     44     ~DefaultStateResidencyDataProvider() = default;
     45 
     46     bool getResults(std::unordered_map<uint32_t, PowerEntityStateResidencyResult>& results) {
     47         PowerEntityStateResidencyResult result = { .powerEntityId = mPowerEntityId };
     48         result.stateResidencyData.resize(2);
     49 
     50         // Using fake numbers here for display only. A real implementation would
     51         // use actual tracked stats.
     52         result.stateResidencyData[0] = {
     53             .powerEntityStateId = mActiveStateId,
     54             .totalTimeInStateMs = 1,
     55             .totalStateEntryCount = 2,
     56             .lastEntryTimestampMs = 3
     57         };
     58         result.stateResidencyData[1] = {
     59             .powerEntityStateId = mSleepStateId,
     60             .totalTimeInStateMs = 4,
     61             .totalStateEntryCount = 5,
     62             .lastEntryTimestampMs = 6,
     63         };
     64         results.emplace(mPowerEntityId, result);
     65         return true;
     66     }
     67 
     68     std::vector<PowerEntityStateSpace> getStateSpaces() {
     69         return {{
     70           .powerEntityId = mPowerEntityId,
     71           .states = {
     72               {.powerEntityStateId = mActiveStateId, .powerEntityStateName = "Active"},
     73               {.powerEntityStateId = mSleepStateId, .powerEntityStateName = "Sleep"}
     74           }
     75         }};
     76     }
     77 
     78    private:
     79     const uint32_t mPowerEntityId;
     80     const uint32_t mActiveStateId;
     81     const uint32_t mSleepStateId;
     82 };
     83 
     84 int main(int /* argc */, char** /* argv */) {
     85     ALOGI("power.stats service 1.0 mock is starting.");
     86 
     87     PowerStats* service = new PowerStats();
     88     if (service == nullptr) {
     89         ALOGE("Can not create an instance of power.stats HAL Iface, exiting.");
     90         return 1;
     91     }
     92 
     93     uint32_t defaultId = service->addPowerEntity("DefaultEntity", PowerEntityType::SUBSYSTEM);
     94     auto defaultSdp = std::make_shared<DefaultStateResidencyDataProvider>(defaultId);
     95     service->addStateResidencyDataProvider(std::move(defaultSdp));
     96 
     97     configureRpcThreadpool(1, true /*callerWillJoin*/);
     98 
     99     status_t status = service->registerAsService();
    100     if (status != OK) {
    101         ALOGE("Could not register service for power.stats HAL Iface (%d), exiting.", status);
    102         return 1;
    103     }
    104 
    105     ALOGI("power.stats service is ready");
    106     joinRpcThreadpool();
    107 
    108     // In normal operation, we don't expect the thread pool to exit
    109     ALOGE("power.stats service is shutting down");
    110     return 1;
    111 }
    112