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// 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> {
public:
static constexpr cppgc::CustomSpaceIndex kSpaceIndex = 0;
static constexpr bool kSupportsCompaction = true;
};
class PLATFORM_EXPORT CompactableHeapHashTableBackingSpace
: public cppgc::CustomSpace<CompactableHeapHashTableBackingSpace> {
public:
static constexpr cppgc::CustomSpaceIndex kSpaceIndex = 1;
static constexpr bool kSupportsCompaction = true;
};
class PLATFORM_EXPORT NodeSpace : public cppgc::CustomSpace<NodeSpace> {
public:
static constexpr cppgc::CustomSpaceIndex kSpaceIndex = 2;
};
class PLATFORM_EXPORT CSSValueSpace : public cppgc::CustomSpace<CSSValueSpace> {
public:
static constexpr cppgc::CustomSpaceIndex kSpaceIndex = 3;
};
class PLATFORM_EXPORT LayoutObjectSpace
: public cppgc::CustomSpace<LayoutObjectSpace> {
public:
static constexpr cppgc::CustomSpaceIndex kSpaceIndex = 4;
};
struct PLATFORM_EXPORT CustomSpaces final {
static std::vector<std::unique_ptr<cppgc::CustomSpaceBase>>
CreateCustomSpaces();
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_HEAP_CUSTOM_SPACES_H_
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