chromium/v8/include/cppgc/internal/caged-heap-local-data.h

// Copyright 2020 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef INCLUDE_CPPGC_INTERNAL_CAGED_HEAP_LOCAL_DATA_H_
#define INCLUDE_CPPGC_INTERNAL_CAGED_HEAP_LOCAL_DATA_H_

#include <array>
#include <cstddef>
#include <cstdint>

#include "cppgc/internal/api-constants.h"
#include "cppgc/internal/caged-heap.h"
#include "cppgc/internal/logging.h"
#include "cppgc/platform.h"
#include "v8config.h"  // NOLINT(build/include_directory)

#if __cpp_lib_bitopts
#include <bit>
#endif  // __cpp_lib_bitopts

#if defined(CPPGC_CAGED_HEAP)

namespace cppgc {
namespace internal {

class HeapBase;
class HeapBaseHandle;

#if defined(CPPGC_YOUNG_GENERATION)

// AgeTable is the bytemap needed for the fast generation check in the write
// barrier. AgeTable contains entries that correspond to 4096 bytes memory
// regions (cards). Each entry in the table represents generation of the objects
// that reside on the corresponding card (young, old or mixed).
class V8_EXPORT AgeTable final { … };

#endif  // CPPGC_YOUNG_GENERATION

struct CagedHeapLocalData final { … };

}  // namespace internal
}  // namespace cppgc

#endif  // defined(CPPGC_CAGED_HEAP)

#endif  // INCLUDE_CPPGC_INTERNAL_CAGED_HEAP_LOCAL_DATA_H_