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/*
* Copyright (C) 2022 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.
*/
#include "AocTimedStateResidencyDataProvider.h"
#include <android-base/logging.h>
#include <chrono>
namespace aidl {
namespace android {
namespace hardware {
namespace power {
namespace stats {
AocTimedStateResidencyDataProvider::AocTimedStateResidencyDataProvider(
std::vector<std::pair<std::string, std::string>> ids,
std::vector<std::pair<std::string, std::string>> states,
const uint64_t timeoutMillis,
const uint64_t aocClock)
: AocStateResidencyDataProvider(ids, states, aocClock) {
static const uint64_t DEFAULT_MAX_TIME_PER_STATE_MILLIS = 120;
mTimeoutMillis =
timeoutMillis == 0 ? DEFAULT_MAX_TIME_PER_STATE_MILLIS * states.size() : timeoutMillis;
mAsyncThread = std::thread(&AocTimedStateResidencyDataProvider::getStateResidenciesAsync, this);
}
bool AocTimedStateResidencyDataProvider::getStateResidencies(
std::unordered_map<std::string, std::vector<StateResidency>> *residencies) {
bool ret = true;
std::unique_lock<std::mutex> statusLock(mStatusMutex);
if (mAsyncStatus != COMPLETED) {
LOG(ERROR) << "The async thread is not ready: " << mAsyncStatus;
return false;
}
mStateResidencies.clear();
mAsyncStatus = RUN;
mRunCond.notify_one();
auto timeout = std::chrono::steady_clock::now() + std::chrono::milliseconds(mTimeoutMillis);
auto isCompleted =
mCompletedCond.wait_until(statusLock, timeout, [this]{ return mAsyncStatus == COMPLETED; });
if (isCompleted) {
for (const auto &residency : mStateResidencies) {
residencies->emplace(residency.first, residency.second);
}
} else {
LOG(ERROR) << __func__ << " for AoC timed out: " << mTimeoutMillis << " ms";
ret = false;
}
return ret;
}
void AocTimedStateResidencyDataProvider::getStateResidenciesAsync() {
std::unique_lock<std::mutex> statusLock(mStatusMutex);
mAsyncStatus = COMPLETED;
while (1) {
mRunCond.wait(statusLock, [this]{ return mAsyncStatus == RUN; });
mAsyncStatus = RUNNING;
statusLock.unlock();
// States from the same power entity are merged.
for (const auto &providerList : mProviders) {
int32_t stateId = 0;
std::string curEntity = providerList.first;
std::vector<StateResidency> stateResidencies;
// Iterate over each provider in the providerList, appending each of the states
for (const auto &provider : providerList.second) {
std::unordered_map<std::string, std::vector<StateResidency>> residency;
provider->getStateResidencies(&residency);
// Each provider should only return data for curEntity but checking anyway
if (residency.find(curEntity) != residency.end()) {
for (auto &r : residency.at(curEntity)) {
/*
* Modifying stateId here because we are stitching together infos from
* multiple GenericStateResidencyDataProviders. stateId must be modified
* to maintain uniqueness for a given entity
*/
r.id = stateId++;
stateResidencies.push_back(r);
}
}
}
mStateResidencies.emplace(curEntity, stateResidencies);
}
statusLock.lock();
mAsyncStatus = COMPLETED;
mCompletedCond.notify_one();
} // while loop
}
} // namespace stats
} // namespace power
} // namespace hardware
} // namespace android
} // namespace aidl
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