chromium/storage/browser/blob/blob_memory_controller.h

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef STORAGE_BROWSER_BLOB_BLOB_MEMORY_CONTROLLER_H_
#define STORAGE_BROWSER_BLOB_BLOB_MEMORY_CONTROLLER_H_

#include <stdint.h>

#include <list>
#include <map>
#include <memory>
#include <optional>
#include <string>
#include <unordered_set>
#include <utility>
#include <vector>

#include "base/component_export.h"
#include "base/containers/lru_cache.h"
#include "base/feature_list.h"
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/functional/callback_forward.h"
#include "base/functional/callback_helpers.h"
#include "base/gtest_prod_util.h"
#include "base/memory/memory_pressure_listener.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "storage/browser/blob/blob_storage_constants.h"

namespace base {
class TaskRunner;
}

namespace content {
class ChromeBlobStorageContext;
}

namespace storage {
class ShareableBlobDataItem;
class ShareableFileReference;

// This class's main responsibility is deciding how blob data gets stored.
// This encompasses:
// * Keeping track of memory & file quota,
// * How to transport the blob data from the renderer (DetermineStrategy),
// * Allocating memory & file quota (ReserveMemoryQuota, ReserveFileQuota)
// * Paging memory quota to disk when we're nearing our memory limit, and
// * Maintaining an LRU of memory items to choose candidates to page to disk
//   (NotifyMemoryItemsUsed).
// This class can only be interacted with on the IO thread.
class COMPONENT_EXPORT(STORAGE_BROWSER) BlobMemoryController { … };
}  // namespace storage
#endif  // STORAGE_BROWSER_BLOB_BLOB_MEMORY_CONTROLLER_H_