| /* |
| * 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 |