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/*
* 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.
*/
#define LOG_TAG "android.hardware.power.stats-service.pixel"
#include <dataproviders/PixelStateResidencyDataProvider.h>
#include <android-base/logging.h>
#include <android-base/stringprintf.h>
#include <android/binder_status.h>
namespace aidl {
namespace android {
namespace hardware {
namespace power {
namespace stats {
PixelStateResidencyDataProvider::PixelStateResidencyDataProvider() {}
void PixelStateResidencyDataProvider::addEntity(std::string name, std::vector<State> states) {
std::lock_guard<std::mutex> lock(mLock);
mEntries.emplace_back(name, states);
}
void PixelStateResidencyDataProvider::start() {
binder_status_t status = AServiceManager_addService(this->asBinder().get(), kInstance.c_str());
if (status != STATUS_OK) {
LOG(ERROR) << "Failed to start " << kInstance;
}
}
::ndk::ScopedAStatus PixelStateResidencyDataProvider::getStateResidenciesTimed(
const Entry &entry, std::vector<StateResidency> *residency) {
const uint64_t MAX_LATENCY_US = 2000;
if (!entry.mCallback) {
LOG(ERROR) << "callback for " << entry.mName << " is not registered";
return ndk::ScopedAStatus::fromStatus(STATUS_UNEXPECTED_NULL);
}
struct timespec then;
struct timespec now;
clock_gettime(CLOCK_BOOTTIME, &then);
::ndk::ScopedAStatus status = entry.mCallback->getStateResidency(residency);
clock_gettime(CLOCK_BOOTTIME, &now);
uint64_t timeElapsedUs =
((now.tv_sec - then.tv_sec) * 1000000) + ((now.tv_nsec - then.tv_nsec) / 1000);
if (timeElapsedUs > MAX_LATENCY_US) {
LOG(WARNING) << "getStateResidency latency for " << entry.mName
<< " exceeded time allowed: " << timeElapsedUs << "us";
}
return status;
}
bool PixelStateResidencyDataProvider::getStateResidencies(
std::unordered_map<std::string, std::vector<StateResidency>> *residencies) {
std::lock_guard<std::mutex> lock(mLock);
size_t numResultsFound = 0;
size_t numResults = mEntries.size();
for (auto &entry : mEntries) {
std::vector<StateResidency> residency;
::ndk::ScopedAStatus status = getStateResidenciesTimed(entry, &residency);
if (!status.isOk()) {
LOG(ERROR) << "getStateResidency for " << entry.mName << " failed";
if (status.getStatus() == STATUS_DEAD_OBJECT) {
LOG(ERROR) << "Unregistering dead callback for " << entry.mName;
entry.mCallback = nullptr;
}
}
if (!residency.empty()) {
residencies->emplace(entry.mName, residency);
numResultsFound++;
}
}
return (numResultsFound == numResults);
}
std::unordered_map<std::string, std::vector<State>> PixelStateResidencyDataProvider::getInfo() {
std::lock_guard<std::mutex> lock(mLock);
std::unordered_map<std::string, std::vector<State>> ret;
for (const auto &entry : mEntries) {
ret.emplace(entry.mName, entry.mStates);
}
return ret;
}
::ndk::ScopedAStatus PixelStateResidencyDataProvider::registerCallback(
const std::string &in_entityName,
const std::shared_ptr<IPixelStateResidencyCallback> &in_cb) {
std::lock_guard<std::mutex> lock(mLock);
if (!in_cb) {
return ndk::ScopedAStatus::fromStatus(STATUS_UNEXPECTED_NULL);
}
auto toRegister =
std::find_if(mEntries.begin(), mEntries.end(),
[&in_entityName](const auto &it) { return it.mName == in_entityName; });
if (toRegister == mEntries.end()) {
LOG(ERROR) << __func__ << " Invalid entityName: " << in_entityName;
return ::ndk::ScopedAStatus::fromStatus(STATUS_BAD_VALUE);
}
toRegister->mCallback = in_cb;
LOG(INFO) << __func__ << ": Registered " << in_entityName;
return ::ndk::ScopedAStatus::ok();
}
::ndk::ScopedAStatus PixelStateResidencyDataProvider::unregisterCallback(
const std::shared_ptr<IPixelStateResidencyCallback> &in_cb) {
std::lock_guard<std::mutex> lock(mLock);
if (!in_cb) {
return ndk::ScopedAStatus::fromStatus(STATUS_UNEXPECTED_NULL);
}
auto toRemove = std::find_if(mEntries.begin(), mEntries.end(), [&in_cb](const auto &it) {
return it.mCallback->asBinder().get() == in_cb->asBinder().get();
});
if (toRemove == mEntries.end()) {
return ndk::ScopedAStatus::fromStatus(STATUS_BAD_VALUE);
}
toRemove->mCallback = nullptr;
return ::ndk::ScopedAStatus::ok();
}
} // namespace stats
} // namespace power
} // namespace hardware
} // namespace android
} // namespace aidl
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