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/*
* Copyright 2020 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 "btaa/wakelock_processor.h"
#include "os/log.h"
namespace bluetooth {
namespace activity_attribution {
static const int kWakelockMaxDurationMs(10000);
WakelockProcessor::WakelockProcessor() {
wakelock_net_count_ = 0;
wakelock_acquired_time_ = {};
}
uint32_t WakelockProcessor::OnWakelockReleased() {
auto cur_time = std::chrono::system_clock::now();
uint32_t wakelock_duration_ms = 0;
if (wakelock_net_count_ == 0) {
LOG_INFO("Release a never acquired wakelock, ignored.");
} else {
wakelock_net_count_--;
if (wakelock_net_count_ == 0) {
wakelock_duration_ms = static_cast<uint32_t>(
std::chrono::duration_cast<std::chrono::milliseconds>(cur_time - wakelock_acquired_time_).count());
wakelock_acquired_time_ = {};
}
}
return wakelock_duration_ms;
}
void WakelockProcessor::OnWakelockAcquired() {
auto cur_time = std::chrono::system_clock::now();
if (wakelock_net_count_ == 0) {
if (wakelock_acquired_time_.time_since_epoch().count()) {
LOG_INFO("Previous wakelock acquired time is not consumed, dropped.");
}
wakelock_acquired_time_ = cur_time;
} else if (cur_time - wakelock_acquired_time_ > std::chrono::milliseconds(kWakelockMaxDurationMs)) {
LOG_INFO("Wakelock held for too long, likely we missed a release notification. Resetting wakelock stats.");
wakelock_net_count_ = 0;
wakelock_acquired_time_ = cur_time;
}
wakelock_net_count_++;
}
} // namespace activity_attribution
} // namespace bluetooth
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