chromium/third_party/blink/renderer/platform/heap/custom_spaces.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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_HEAP_CUSTOM_SPACES_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_HEAP_CUSTOM_SPACES_H_

#include <memory>
#include <vector>

#include "third_party/blink/renderer/platform/platform_export.h"
#include "v8/include/cppgc/custom-space.h"

namespace blink {

// The following defines custom spaces that are used to partition Oilpan's heap.
// Each custom space is assigned to a type partition using `cppgc::SpaceTrait`.
// It is expected that `kSpaceIndex` uniquely identifies a space and that the
// indices of all custom spaces form a sequence starting at 0. See
// `cppgc::CustomSpace` for details.

class PLATFORM_EXPORT CompactableHeapVectorBackingSpace
    : public cppgc::CustomSpace<CompactableHeapVectorBackingSpace> { … };

class PLATFORM_EXPORT CompactableHeapHashTableBackingSpace
    : public cppgc::CustomSpace<CompactableHeapHashTableBackingSpace> { … };

class PLATFORM_EXPORT NodeSpace : public cppgc::CustomSpace<NodeSpace> { … };

class PLATFORM_EXPORT CSSValueSpace : public cppgc::CustomSpace<CSSValueSpace> { … };

class PLATFORM_EXPORT LayoutObjectSpace
    : public cppgc::CustomSpace<LayoutObjectSpace> { … };

struct PLATFORM_EXPORT CustomSpaces final { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_HEAP_CUSTOM_SPACES_H_