chromium/chrome/browser/resource_coordinator/lifecycle_unit.h

// Copyright 2017 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_RESOURCE_COORDINATOR_LIFECYCLE_UNIT_H_
#define CHROME_BROWSER_RESOURCE_COORDINATOR_LIFECYCLE_UNIT_H_

#include <stdint.h>
#include <string>
#include <vector>

#include "base/containers/flat_set.h"
#include "base/memory/raw_ptr.h"
#include "base/process/process_handle.h"
#include "base/time/time.h"
#include "chrome/browser/resource_coordinator/decision_details.h"
#include "chrome/browser/resource_coordinator/lifecycle_unit_state.mojom-forward.h"
#include "content/public/browser/visibility.h"
#include "services/metrics/public/cpp/ukm_source_id.h"

namespace resource_coordinator {

LifecycleUnitDiscardReason;
LifecycleUnitLoadingState;
LifecycleUnitState;

class DecisionDetails;
class LifecycleUnitObserver;
class LifecycleUnitSource;
class TabLifecycleUnitExternal;

// A LifecycleUnit represents a unit that can switch between the "loaded" and
// "discarded" states. When it is loaded, the unit uses system resources and
// provides functionality to the user. When it is discarded, the unit doesn't
// use any system resource.
class LifecycleUnit { … };

LifecycleUnitSet;
LifecycleUnitVector;

}  // namespace resource_coordinator

#endif  // CHROME_BROWSER_RESOURCE_COORDINATOR_LIFECYCLE_UNIT_H_