| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define DEBUG false // STOPSHIP if true |
| #define LOG_TAG "PowerStatsPuller" |
| |
| #include <android/hardware/power/stats/1.0/IPowerStats.h> |
| #include <log/log.h> |
| #include <statslog.h> |
| |
| #include <vector> |
| |
| #include "PowerStatsPuller.h" |
| |
| using android::hardware::hidl_vec; |
| using android::hardware::Return; |
| using android::hardware::Void; |
| using android::hardware::power::stats::V1_0::EnergyData; |
| using android::hardware::power::stats::V1_0::IPowerStats; |
| using android::hardware::power::stats::V1_0::RailInfo; |
| using android::hardware::power::stats::V1_0::Status; |
| |
| namespace android { |
| namespace server { |
| namespace stats { |
| |
| static sp<android::hardware::power::stats::V1_0::IPowerStats> gPowerStatsHal = nullptr; |
| static std::mutex gPowerStatsHalMutex; |
| static bool gPowerStatsExist = true; // Initialized to ensure making a first attempt. |
| static std::vector<RailInfo> gRailInfo; |
| |
| struct PowerStatsPullerDeathRecipient : virtual public hardware::hidl_death_recipient { |
| virtual void serviceDied(uint64_t cookie, |
| const wp<android::hidl::base::V1_0::IBase>& who) override { |
| // The HAL just died. Reset all handles to HAL services. |
| std::lock_guard<std::mutex> lock(gPowerStatsHalMutex); |
| gPowerStatsHal = nullptr; |
| } |
| }; |
| |
| static sp<PowerStatsPullerDeathRecipient> gDeathRecipient = new PowerStatsPullerDeathRecipient(); |
| |
| static bool getPowerStatsHalLocked() { |
| if (gPowerStatsHal == nullptr && gPowerStatsExist) { |
| gPowerStatsHal = android::hardware::power::stats::V1_0::IPowerStats::getService(); |
| if (gPowerStatsHal == nullptr) { |
| ALOGW("Couldn't load power.stats HAL service"); |
| gPowerStatsExist = false; |
| } else { |
| // Link death recipient to power.stats service handle |
| hardware::Return<bool> linked = gPowerStatsHal->linkToDeath(gDeathRecipient, 0); |
| if (!linked.isOk()) { |
| ALOGE("Transaction error in linking to power.stats HAL death: %s", |
| linked.description().c_str()); |
| gPowerStatsHal = nullptr; |
| return false; |
| } else if (!linked) { |
| ALOGW("Unable to link to power.stats HAL death notifications"); |
| // We should still continue even though linking failed |
| } |
| } |
| } |
| return gPowerStatsHal != nullptr; |
| } |
| |
| PowerStatsPuller::PowerStatsPuller() {} |
| |
| AStatsManager_PullAtomCallbackReturn PowerStatsPuller::Pull(int32_t atomTag, |
| AStatsEventList* data) { |
| std::lock_guard<std::mutex> lock(gPowerStatsHalMutex); |
| |
| if (!getPowerStatsHalLocked()) { |
| return AStatsManager_PULL_SKIP; |
| } |
| |
| // Pull getRailInfo if necessary |
| if (gRailInfo.empty()) { |
| bool resultSuccess = true; |
| Return<void> ret = gPowerStatsHal->getRailInfo( |
| [&resultSuccess](const hidl_vec<RailInfo>& list, Status status) { |
| resultSuccess = (status == Status::SUCCESS || status == Status::NOT_SUPPORTED); |
| if (status != Status::SUCCESS) return; |
| gRailInfo.reserve(list.size()); |
| for (size_t i = 0; i < list.size(); ++i) { |
| gRailInfo.push_back(list[i]); |
| } |
| }); |
| if (!resultSuccess || !ret.isOk()) { |
| ALOGE("power.stats getRailInfo() failed. Description: %s", ret.description().c_str()); |
| gPowerStatsHal = nullptr; |
| return AStatsManager_PULL_SKIP; |
| } |
| // If SUCCESS but empty, or if NOT_SUPPORTED, then never try again. |
| if (gRailInfo.empty()) { |
| ALOGE("power.stats has no rail information"); |
| gPowerStatsExist = false; // No rail info, so never try again. |
| gPowerStatsHal = nullptr; |
| return AStatsManager_PULL_SKIP; |
| } |
| } |
| |
| // Pull getEnergyData and write the data out |
| const hidl_vec<uint32_t> desiredRailIndices; // Empty vector indicates we want all. |
| bool resultSuccess = true; |
| Return<void> ret = |
| gPowerStatsHal |
| ->getEnergyData(desiredRailIndices, |
| [&data, &resultSuccess](hidl_vec<EnergyData> energyDataList, |
| Status status) { |
| resultSuccess = (status == Status::SUCCESS); |
| if (!resultSuccess) return; |
| |
| for (size_t i = 0; i < energyDataList.size(); i++) { |
| const EnergyData& energyData = energyDataList[i]; |
| |
| if (energyData.index >= gRailInfo.size()) { |
| ALOGE("power.stats getEnergyData() returned an " |
| "invalid rail index %u.", |
| energyData.index); |
| resultSuccess = false; |
| return; |
| } |
| const RailInfo& rail = gRailInfo[energyData.index]; |
| |
| AStatsEvent* event = |
| AStatsEventList_addStatsEvent(data); |
| AStatsEvent_setAtomId( |
| event, |
| android::util::ON_DEVICE_POWER_MEASUREMENT); |
| AStatsEvent_writeString(event, rail.subsysName.c_str()); |
| AStatsEvent_writeString(event, rail.railName.c_str()); |
| AStatsEvent_writeInt64(event, energyData.timestamp); |
| AStatsEvent_writeInt64(event, energyData.energy); |
| AStatsEvent_build(event); |
| |
| ALOGV("power.stat: %s.%s: %llu, %llu", |
| rail.subsysName.c_str(), rail.railName.c_str(), |
| (unsigned long long)energyData.timestamp, |
| (unsigned long long)energyData.energy); |
| } |
| }); |
| if (!resultSuccess || !ret.isOk()) { |
| ALOGE("power.stats getEnergyData() failed. Description: %s", ret.description().c_str()); |
| gPowerStatsHal = nullptr; |
| return AStatsManager_PULL_SKIP; |
| } |
| return AStatsManager_PULL_SUCCESS; |
| } |
| |
| } // namespace stats |
| } // namespace server |
| } // namespace android |