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// Copyright 2020 The Chromium Authors
// 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/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;
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_
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