power/stats: Add default implementation
Bug: 181592995
Test: atest VtsHalPowerStatsTargetTest
Change-Id: I87ea4974f857ebd126b80a45c7d7403307bceb03
diff --git a/power/stats/aidl/default/FakeEnergyConsumer.h b/power/stats/aidl/default/FakeEnergyConsumer.h
new file mode 100644
index 0000000..f41aa6e
--- /dev/null
+++ b/power/stats/aidl/default/FakeEnergyConsumer.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+#pragma once
+
+#include <PowerStats.h>
+
+#include <android-base/chrono_utils.h>
+
+#include <chrono>
+#include <random>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace power {
+namespace stats {
+
+class FakeEnergyConsumer : public PowerStats::IEnergyConsumer {
+ public:
+ FakeEnergyConsumer(EnergyConsumerType type, std::string name) : mType(type), mName(name) {
+ mResult.timestampMs = 0;
+ mResult.energyUWs = 0;
+ mResult.attribution = {};
+ }
+
+ ~FakeEnergyConsumer() = default;
+
+ std::string getName() override { return mName; }
+
+ EnergyConsumerType getType() override { return mType; }
+
+ std::optional<EnergyConsumerResult> getEnergyConsumed() override {
+ mFakeEnergyConsumerResult.update(&mResult);
+ return mResult;
+ }
+
+ private:
+ class FakeEnergyConsumerResult {
+ public:
+ FakeEnergyConsumerResult() : mDistribution(1, 100) {}
+ void update(EnergyConsumerResult* result) {
+ // generates number in the range 1..100
+ auto randNum = std::bind(mDistribution, mGenerator);
+
+ // Get current time since boot in milliseconds
+ uint64_t now = std::chrono::time_point_cast<std::chrono::milliseconds>(
+ ::android::base::boot_clock::now())
+ .time_since_epoch()
+ .count();
+ result->timestampMs = now;
+ result->energyUWs += randNum() * 100;
+ }
+
+ private:
+ std::default_random_engine mGenerator;
+ std::uniform_int_distribution<int> mDistribution;
+ };
+
+ EnergyConsumerType mType;
+ std::string mName;
+ FakeEnergyConsumerResult mFakeEnergyConsumerResult;
+ EnergyConsumerResult mResult;
+};
+
+} // namespace stats
+} // namespace power
+} // namespace hardware
+} // namespace android
+} // namespace aidl
\ No newline at end of file
diff --git a/power/stats/aidl/default/FakeEnergyMeter.h b/power/stats/aidl/default/FakeEnergyMeter.h
new file mode 100644
index 0000000..f0d4ee7
--- /dev/null
+++ b/power/stats/aidl/default/FakeEnergyMeter.h
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+#pragma once
+
+#include <PowerStats.h>
+
+#include <android-base/chrono_utils.h>
+
+#include <chrono>
+#include <random>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace power {
+namespace stats {
+
+class FakeEnergyMeter : public PowerStats::IEnergyMeter {
+ public:
+ FakeEnergyMeter(std::vector<std::pair<std::string, std::string>> channelNames) {
+ int32_t channelId = 0;
+ for (const auto& [name, subsystem] : channelNames) {
+ Channel c;
+ c.id = channelId++;
+ c.name = name;
+ c.subsystem = subsystem;
+
+ EnergyMeasurement m;
+ m.id = c.id;
+ m.timestampMs = 0;
+ m.durationMs = 0;
+ m.energyUWs = 0;
+
+ mChannels.push_back(c);
+ mEnergyMeasurements.push_back(m);
+ }
+ }
+ ~FakeEnergyMeter() = default;
+ ndk::ScopedAStatus readEnergyMeter(const std::vector<int32_t>& in_channelIds,
+ std::vector<EnergyMeasurement>* _aidl_return) override {
+ for (auto& measurement : mEnergyMeasurements) {
+ mFakeEnergyMeasurement.update(&measurement);
+ }
+
+ if (in_channelIds.empty()) {
+ *_aidl_return = mEnergyMeasurements;
+ } else {
+ for (int32_t id : in_channelIds) {
+ if (id >= 0 && id < mEnergyMeasurements.size()) {
+ _aidl_return->push_back(mEnergyMeasurements[id]);
+ }
+ }
+ }
+
+ return ndk::ScopedAStatus::ok();
+ }
+
+ ndk::ScopedAStatus getEnergyMeterInfo(std::vector<Channel>* _aidl_return) override {
+ *_aidl_return = mChannels;
+ return ndk::ScopedAStatus::ok();
+ }
+
+ private:
+ class FakeEnergyMeasurement {
+ public:
+ FakeEnergyMeasurement() : mDistribution(1, 100) {}
+ void update(EnergyMeasurement* measurement) {
+ // generates number in the range 1..100
+ auto randNum = std::bind(mDistribution, mGenerator);
+
+ // Get current time since boot in milliseconds
+ uint64_t now = std::chrono::time_point_cast<std::chrono::milliseconds>(
+ ::android::base::boot_clock::now())
+ .time_since_epoch()
+ .count();
+ measurement->timestampMs = now;
+ measurement->durationMs = now;
+ measurement->energyUWs += randNum() * 100;
+ }
+
+ private:
+ std::default_random_engine mGenerator;
+ std::uniform_int_distribution<int> mDistribution;
+ };
+
+ std::vector<Channel> mChannels;
+ FakeEnergyMeasurement mFakeEnergyMeasurement;
+ std::vector<EnergyMeasurement> mEnergyMeasurements;
+};
+
+} // namespace stats
+} // namespace power
+} // namespace hardware
+} // namespace android
+} // namespace aidl
\ No newline at end of file
diff --git a/power/stats/aidl/default/FakeStateResidencyDataProvider.h b/power/stats/aidl/default/FakeStateResidencyDataProvider.h
new file mode 100644
index 0000000..2eeab61
--- /dev/null
+++ b/power/stats/aidl/default/FakeStateResidencyDataProvider.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+#pragma once
+
+#include <PowerStats.h>
+
+#include <random>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace power {
+namespace stats {
+
+class FakeStateResidencyDataProvider : public PowerStats::IStateResidencyDataProvider {
+ public:
+ FakeStateResidencyDataProvider(const std::string& name, std::vector<State> states)
+ : mName(name), mStates(states) {
+ for (const auto& state : mStates) {
+ StateResidency r;
+ r.id = state.id;
+ r.totalTimeInStateMs = 0;
+ r.totalStateEntryCount = 0;
+ r.lastEntryTimestampMs = 0;
+ mResidencies.push_back(r);
+ }
+ }
+ ~FakeStateResidencyDataProvider() = default;
+
+ // Methods from PowerStats::IStateResidencyDataProvider
+ bool getStateResidencies(
+ std::unordered_map<std::string, std::vector<StateResidency>>* residencies) override {
+ for (auto& residency : mResidencies) {
+ mFakeStateResidency.update(&residency);
+ }
+
+ residencies->emplace(mName, mResidencies);
+ return true;
+ }
+
+ std::unordered_map<std::string, std::vector<State>> getInfo() override {
+ return {{mName, mStates}};
+ }
+
+ private:
+ class FakeStateResidency {
+ public:
+ FakeStateResidency() : mDistribution(1, 100) {}
+ void update(StateResidency* residency) {
+ // generates number in the range 1..100
+ auto randNum = std::bind(mDistribution, mGenerator);
+
+ residency->totalTimeInStateMs += randNum() * 100;
+ residency->totalStateEntryCount += randNum();
+ residency->lastEntryTimestampMs += randNum() * 100;
+ }
+
+ private:
+ std::default_random_engine mGenerator;
+ std::uniform_int_distribution<int> mDistribution;
+ };
+
+ const std::string mName;
+ const std::vector<State> mStates;
+ FakeStateResidency mFakeStateResidency;
+ std::vector<StateResidency> mResidencies;
+};
+
+} // namespace stats
+} // namespace power
+} // namespace hardware
+} // namespace android
+} // namespace aidl
\ No newline at end of file
diff --git a/power/stats/aidl/default/PowerStats.cpp b/power/stats/aidl/default/PowerStats.cpp
index 0ffbd08..1373502 100644
--- a/power/stats/aidl/default/PowerStats.cpp
+++ b/power/stats/aidl/default/PowerStats.cpp
@@ -18,46 +18,157 @@
#include <android-base/logging.h>
+#include <numeric>
+
namespace aidl {
namespace android {
namespace hardware {
namespace power {
namespace stats {
+void PowerStats::addStateResidencyDataProvider(std::unique_ptr<IStateResidencyDataProvider> p) {
+ if (!p) {
+ return;
+ }
+
+ int32_t id = mPowerEntityInfos.size();
+
+ for (const auto& [entityName, states] : p->getInfo()) {
+ PowerEntity i = {
+ .id = id++,
+ .name = entityName,
+ .states = states,
+ };
+ mPowerEntityInfos.emplace_back(i);
+ mStateResidencyDataProviders.emplace_back(std::move(p));
+ }
+}
+
+void PowerStats::addEnergyConsumer(std::unique_ptr<IEnergyConsumer> p) {
+ if (!p) {
+ return;
+ }
+
+ EnergyConsumerType type = p->getType();
+ std::string name = p->getName();
+ int32_t count = count_if(mEnergyConsumerInfos.begin(), mEnergyConsumerInfos.end(),
+ [&type](const EnergyConsumer& c) { return type == c.type; });
+ int32_t id = mEnergyConsumers.size();
+ mEnergyConsumerInfos.emplace_back(
+ EnergyConsumer{.id = id, .ordinal = count, .type = type, .name = name});
+ mEnergyConsumers.emplace_back(std::move(p));
+}
+
+void PowerStats::setEnergyMeter(std::unique_ptr<IEnergyMeter> p) {
+ mEnergyMeter = std::move(p);
+}
+
ndk::ScopedAStatus PowerStats::getPowerEntityInfo(std::vector<PowerEntity>* _aidl_return) {
- (void)_aidl_return;
+ *_aidl_return = mPowerEntityInfos;
return ndk::ScopedAStatus::ok();
}
ndk::ScopedAStatus PowerStats::getStateResidency(const std::vector<int32_t>& in_powerEntityIds,
std::vector<StateResidencyResult>* _aidl_return) {
- (void)in_powerEntityIds;
- (void)_aidl_return;
- return ndk::ScopedAStatus::ok();
+ if (mPowerEntityInfos.empty()) {
+ return ndk::ScopedAStatus::ok();
+ }
+
+ // If in_powerEntityIds is empty then return data for all supported entities
+ if (in_powerEntityIds.empty()) {
+ std::vector<int32_t> v(mPowerEntityInfos.size());
+ std::iota(std::begin(v), std::end(v), 0);
+ return getStateResidency(v, _aidl_return);
+ }
+
+ binder_status_t err = STATUS_OK;
+
+ std::unordered_map<std::string, std::vector<StateResidency>> stateResidencies;
+
+ for (const int32_t id : in_powerEntityIds) {
+ // skip any invalid ids
+ if (id < 0 || id >= mPowerEntityInfos.size()) {
+ continue;
+ }
+
+ // Check to see if we already have data for the given id
+ std::string powerEntityName = mPowerEntityInfos[id].name;
+ if (stateResidencies.find(powerEntityName) == stateResidencies.end()) {
+ mStateResidencyDataProviders[id]->getStateResidencies(&stateResidencies);
+ }
+
+ // Append results if we have them
+ auto stateResidency = stateResidencies.find(powerEntityName);
+ if (stateResidency != stateResidencies.end()) {
+ StateResidencyResult res = {
+ .id = id,
+ .stateResidencyData = stateResidency->second,
+ };
+ _aidl_return->emplace_back(res);
+ } else {
+ // Failed to retrieve results for the given id.
+ err = STATUS_FAILED_TRANSACTION;
+ }
+ }
+
+ return ndk::ScopedAStatus::fromStatus(err);
}
ndk::ScopedAStatus PowerStats::getEnergyConsumerInfo(std::vector<EnergyConsumer>* _aidl_return) {
- (void)_aidl_return;
+ *_aidl_return = mEnergyConsumerInfos;
return ndk::ScopedAStatus::ok();
}
ndk::ScopedAStatus PowerStats::getEnergyConsumed(const std::vector<int32_t>& in_energyConsumerIds,
std::vector<EnergyConsumerResult>* _aidl_return) {
- (void)in_energyConsumerIds;
- (void)_aidl_return;
- return ndk::ScopedAStatus::ok();
+ if (mEnergyConsumers.empty()) {
+ return ndk::ScopedAStatus::ok();
+ }
+
+ // If in_powerEntityIds is empty then return data for all supported energy consumers
+ if (in_energyConsumerIds.empty()) {
+ std::vector<int32_t> v(mEnergyConsumerInfos.size());
+ std::iota(std::begin(v), std::end(v), 0);
+ return getEnergyConsumed(v, _aidl_return);
+ }
+
+ binder_status_t err = STATUS_OK;
+
+ for (const auto id : in_energyConsumerIds) {
+ // skip any invalid ids
+ if (id < 0 || id >= mEnergyConsumers.size()) {
+ continue;
+ }
+
+ auto optionalResult = mEnergyConsumers[id]->getEnergyConsumed();
+ if (optionalResult) {
+ EnergyConsumerResult result = optionalResult.value();
+ result.id = id;
+ _aidl_return->emplace_back(result);
+ } else {
+ // Failed to retrieve results for the given id.
+ err = STATUS_FAILED_TRANSACTION;
+ }
+ }
+
+ return ndk::ScopedAStatus::fromStatus(err);
}
ndk::ScopedAStatus PowerStats::getEnergyMeterInfo(std::vector<Channel>* _aidl_return) {
- (void)_aidl_return;
- return ndk::ScopedAStatus::ok();
+ if (!mEnergyMeter) {
+ return ndk::ScopedAStatus::ok();
+ }
+
+ return mEnergyMeter->getEnergyMeterInfo(_aidl_return);
}
ndk::ScopedAStatus PowerStats::readEnergyMeter(const std::vector<int32_t>& in_channelIds,
std::vector<EnergyMeasurement>* _aidl_return) {
- (void)in_channelIds;
- (void)_aidl_return;
- return ndk::ScopedAStatus::ok();
+ if (!mEnergyMeter) {
+ return ndk::ScopedAStatus::ok();
+ }
+
+ return mEnergyMeter->readEnergyMeter(in_channelIds, _aidl_return);
}
} // namespace stats
diff --git a/power/stats/aidl/default/PowerStats.h b/power/stats/aidl/default/PowerStats.h
index cb98e55..f4c5e69 100644
--- a/power/stats/aidl/default/PowerStats.h
+++ b/power/stats/aidl/default/PowerStats.h
@@ -18,6 +18,8 @@
#include <aidl/android/hardware/power/stats/BnPowerStats.h>
+#include <unordered_map>
+
namespace aidl {
namespace android {
namespace hardware {
@@ -26,7 +28,37 @@
class PowerStats : public BnPowerStats {
public:
+ class IStateResidencyDataProvider {
+ public:
+ virtual ~IStateResidencyDataProvider() = default;
+ virtual bool getStateResidencies(
+ std::unordered_map<std::string, std::vector<StateResidency>>* residencies) = 0;
+ virtual std::unordered_map<std::string, std::vector<State>> getInfo() = 0;
+ };
+
+ class IEnergyConsumer {
+ public:
+ virtual ~IEnergyConsumer() = default;
+ virtual std::string getName() = 0;
+ virtual EnergyConsumerType getType() = 0;
+ virtual std::optional<EnergyConsumerResult> getEnergyConsumed() = 0;
+ };
+
+ class IEnergyMeter {
+ public:
+ virtual ~IEnergyMeter() = default;
+ virtual ndk::ScopedAStatus readEnergyMeter(
+ const std::vector<int32_t>& in_channelIds,
+ std::vector<EnergyMeasurement>* _aidl_return) = 0;
+ virtual ndk::ScopedAStatus getEnergyMeterInfo(std::vector<Channel>* _aidl_return) = 0;
+ };
+
PowerStats() = default;
+
+ void addStateResidencyDataProvider(std::unique_ptr<IStateResidencyDataProvider> p);
+ void addEnergyConsumer(std::unique_ptr<IEnergyConsumer> p);
+ void setEnergyMeter(std::unique_ptr<IEnergyMeter> p);
+
// Methods from aidl::android::hardware::power::stats::IPowerStats
ndk::ScopedAStatus getPowerEntityInfo(std::vector<PowerEntity>* _aidl_return) override;
ndk::ScopedAStatus getStateResidency(const std::vector<int32_t>& in_powerEntityIds,
@@ -37,6 +69,15 @@
ndk::ScopedAStatus getEnergyMeterInfo(std::vector<Channel>* _aidl_return) override;
ndk::ScopedAStatus readEnergyMeter(const std::vector<int32_t>& in_channelIds,
std::vector<EnergyMeasurement>* _aidl_return) override;
+
+ private:
+ std::vector<std::unique_ptr<IStateResidencyDataProvider>> mStateResidencyDataProviders;
+ std::vector<PowerEntity> mPowerEntityInfos;
+
+ std::vector<std::unique_ptr<IEnergyConsumer>> mEnergyConsumers;
+ std::vector<EnergyConsumer> mEnergyConsumerInfos;
+
+ std::unique_ptr<IEnergyMeter> mEnergyMeter;
};
} // namespace stats
diff --git a/power/stats/aidl/default/main.cpp b/power/stats/aidl/default/main.cpp
index 0469b4c..2fe3d2e 100644
--- a/power/stats/aidl/default/main.cpp
+++ b/power/stats/aidl/default/main.cpp
@@ -16,16 +16,61 @@
#include "PowerStats.h"
+#include "FakeEnergyConsumer.h"
+#include "FakeEnergyMeter.h"
+#include "FakeStateResidencyDataProvider.h"
+
#include <android-base/logging.h>
#include <android/binder_manager.h>
#include <android/binder_process.h>
+using aidl::android::hardware::power::stats::EnergyConsumerType;
+using aidl::android::hardware::power::stats::FakeEnergyConsumer;
+using aidl::android::hardware::power::stats::FakeEnergyMeter;
+using aidl::android::hardware::power::stats::FakeStateResidencyDataProvider;
using aidl::android::hardware::power::stats::PowerStats;
+using aidl::android::hardware::power::stats::State;
+
+void setFakeEnergyMeter(std::shared_ptr<PowerStats> p) {
+ p->setEnergyMeter(
+ std::make_unique<FakeEnergyMeter>(std::vector<std::pair<std::string, std::string>>{
+ {"Rail1", "Display"},
+ {"Rail2", "CPU"},
+ {"Rail3", "Modem"},
+ }));
+}
+
+void addFakeStateResidencyDataProvider1(std::shared_ptr<PowerStats> p) {
+ p->addStateResidencyDataProvider(std::make_unique<FakeStateResidencyDataProvider>(
+ "CPU", std::vector<State>{{0, "Idle"}, {1, "Active"}}));
+}
+
+void addFakeStateResidencyDataProvider2(std::shared_ptr<PowerStats> p) {
+ p->addStateResidencyDataProvider(std::make_unique<FakeStateResidencyDataProvider>(
+ "Display", std::vector<State>{{0, "Off"}, {1, "On"}}));
+}
+
+void addFakeEnergyConsumer1(std::shared_ptr<PowerStats> p) {
+ p->addEnergyConsumer(std::make_unique<FakeEnergyConsumer>(EnergyConsumerType::OTHER, "GPU"));
+}
+
+void addFakeEnergyConsumer2(std::shared_ptr<PowerStats> p) {
+ p->addEnergyConsumer(
+ std::make_unique<FakeEnergyConsumer>(EnergyConsumerType::MOBILE_RADIO, "MODEM"));
+}
int main() {
ABinderProcess_setThreadPoolMaxThreadCount(0);
std::shared_ptr<PowerStats> p = ndk::SharedRefBase::make<PowerStats>();
+ setFakeEnergyMeter(p);
+
+ addFakeStateResidencyDataProvider1(p);
+ addFakeStateResidencyDataProvider2(p);
+
+ addFakeEnergyConsumer1(p);
+ addFakeEnergyConsumer2(p);
+
const std::string instance = std::string() + PowerStats::descriptor + "/default";
binder_status_t status = AServiceManager_addService(p->asBinder().get(), instance.c_str());
CHECK(status == STATUS_OK);