| // Copyright 2020 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef COMPONENTS_MEMORY_PRESSURE_SYSTEM_MEMORY_PRESSURE_EVALUATOR_FUCHSIA_H_ |
| #define COMPONENTS_MEMORY_PRESSURE_SYSTEM_MEMORY_PRESSURE_EVALUATOR_FUCHSIA_H_ |
| |
| #include <fuchsia/memorypressure/cpp/fidl.h> |
| #include <lib/fidl/cpp/binding.h> |
| |
| #include "base/sequence_checker.h" |
| #include "base/time/time.h" |
| #include "base/timer/timer.h" |
| #include "components/memory_pressure/system_memory_pressure_evaluator.h" |
| |
| namespace memory_pressure { |
| class MemoryPressureVoter; |
| |
| // Registers with the fuchsia.memorypressure.Provider to be notified of changes |
| // to the system memory pressure level. Votes are sent immediately when |
| // memory pressure becomes MODERATE or CRITICAL, and periodically until |
| // memory pressure drops back down to NONE. No notifications are sent at NONE |
| // level. |
| class SystemMemoryPressureEvaluatorFuchsia |
| : public SystemMemoryPressureEvaluator, |
| public fuchsia::memorypressure::Watcher { |
| public: |
| using SystemMemoryPressureEvaluator::SendCurrentVote; |
| |
| // The period at which the system is re-notified when the pressure is not |
| // none. |
| static const base::TimeDelta kRenotifyVotePeriod; |
| |
| explicit SystemMemoryPressureEvaluatorFuchsia( |
| std::unique_ptr<memory_pressure::MemoryPressureVoter> voter); |
| |
| ~SystemMemoryPressureEvaluatorFuchsia() override; |
| |
| SystemMemoryPressureEvaluatorFuchsia( |
| const SystemMemoryPressureEvaluatorFuchsia&) = delete; |
| SystemMemoryPressureEvaluatorFuchsia& operator=( |
| const SystemMemoryPressureEvaluatorFuchsia&) = delete; |
| |
| private: |
| // fuchsia::memorypressure::Watcher implementation. |
| void OnLevelChanged(fuchsia::memorypressure::Level level, |
| OnLevelChangedCallback callback) override; |
| |
| fidl::Binding<fuchsia::memorypressure::Watcher> binding_; |
| |
| // Timer that will re-notify with the current vote at regular interval. |
| base::RepeatingTimer renotify_current_vote_timer_; |
| |
| SEQUENCE_CHECKER(sequence_checker_); |
| }; |
| |
| } // namespace memory_pressure |
| |
| #endif // COMPONENTS_MEMORY_PRESSURE_SYSTEM_MEMORY_PRESSURE_EVALUATOR_FUCHSIA_H_ |