chromium/v8/src/objects/js-array-buffer.h

// Copyright 2018 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 V8_OBJECTS_JS_ARRAY_BUFFER_H_
#define V8_OBJECTS_JS_ARRAY_BUFFER_H_

#include "include/v8-array-buffer.h"
#include "include/v8-typed-array.h"
#include "src/handles/maybe-handles.h"
#include "src/objects/backing-store.h"
#include "src/objects/js-objects.h"
#include "torque-generated/bit-fields.h"

// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"

namespace v8 {
namespace internal {

class ArrayBufferExtension;

#include "torque-generated/src/objects/js-array-buffer-tq.inc"

class JSArrayBuffer
    : public TorqueGeneratedJSArrayBuffer<JSArrayBuffer,
                                          JSAPIObjectWithEmbedderSlots> { … };

// Each JSArrayBuffer (with a backing store) has a corresponding native-heap
// allocated ArrayBufferExtension for GC purposes and storing the backing store.
// When marking a JSArrayBuffer, the GC also marks the native
// extension-object. The GC periodically iterates all extensions concurrently
// and frees unmarked ones.
// https://docs.google.com/document/d/1-ZrLdlFX1nXT3z-FAgLbKal1gI8Auiaya_My-a0UJ28/edit
class ArrayBufferExtension final
#ifdef V8_COMPRESS_POINTERS
    : public ExternalPointerTable::ManagedResource { … };

class JSArrayBufferView
    : public TorqueGeneratedJSArrayBufferView<JSArrayBufferView,
                                              JSAPIObjectWithEmbedderSlots> { … };

class JSTypedArray
    : public TorqueGeneratedJSTypedArray<JSTypedArray, JSArrayBufferView> { … };

class JSDataViewOrRabGsabDataView
    : public TorqueGeneratedJSDataViewOrRabGsabDataView<
          JSDataViewOrRabGsabDataView, JSArrayBufferView> { … };

class JSDataView
    : public TorqueGeneratedJSDataView<JSDataView,
                                       JSDataViewOrRabGsabDataView> { … };

class JSRabGsabDataView
    : public TorqueGeneratedJSRabGsabDataView<JSRabGsabDataView,
                                              JSDataViewOrRabGsabDataView> { … };

}  // namespace internal
}  // namespace v8

#include "src/objects/object-macros-undef.h"

#endif  // V8_OBJECTS_JS_ARRAY_BUFFER_H_