chromium/chrome/browser/dbus_memory_pressure_evaluator_linux.h

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_DBUS_MEMORY_PRESSURE_EVALUATOR_LINUX_H_
#define CHROME_BROWSER_DBUS_MEMORY_PRESSURE_EVALUATOR_LINUX_H_

#include <memory>
#include <string>

#include "base/functional/callback_forward.h"
#include "base/memory/memory_pressure_listener.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.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"
#include "dbus/bus.h"

namespace dbus {
class Response;
class Signal;
}  // namespace dbus

namespace memory_pressure {
class MemoryPressureVoter;
}  // namespace memory_pressure

// A memory pressure evaluator that uses the low-memory-monitor service
// (abbreviated in the code as "LMM") to monitor the memory pressure. If the
// service is not available, it can use the XDG memory monitor portal as a
// fallback (which itself is a thin wrapper over LMM).
//
// The LMM API is described here:
// https://hadess.pages.freedesktop.org/low-memory-monitor/
// and the portal API wrapper is here:
// https://flatpak.github.io/xdg-desktop-portal/portal-docs.html#gdbus-org.freedesktop.portal.MemoryMonitor
class DbusMemoryPressureEvaluatorLinux
    : public memory_pressure::SystemMemoryPressureEvaluator { … };

#endif  // CHROME_BROWSER_DBUS_MEMORY_PRESSURE_EVALUATOR_LINUX_H_