blob: 6dcf03bd05cf29ad04aa74b5428269be15cfae09 [file] [log] [blame]
// Copyright 2019 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.
bitfield struct JSArrayBufferFlags extends uint32 {
is_external: bool: 1 bit;
is_detachable: bool: 1 bit;
was_detached: bool: 1 bit;
is_asm_js_memory: bool: 1 bit;
is_shared: bool: 1 bit;
extern class JSArrayBuffer extends JSObject {
byte_length: uintptr;
backing_store: ExternalPointer;
extension: RawPtr;
bit_field: JSArrayBufferFlags;
// Pads header size to be a multiple of kTaggedSize.
@if(TAGGED_SIZE_8_BYTES) optional_padding: uint32;
@ifnot(TAGGED_SIZE_8_BYTES) optional_padding: void;
extern operator '.backing_store_ptr' macro LoadJSArrayBufferBackingStorePtr(
JSArrayBuffer): RawPtr;
macro IsDetachedBuffer(buffer: JSArrayBuffer): bool {
return buffer.bit_field.was_detached;
macro IsSharedArrayBuffer(buffer: JSArrayBuffer): bool {
return buffer.bit_field.is_shared;
extern class JSArrayBufferView extends JSObject {
buffer: JSArrayBuffer;
byte_offset: uintptr;
byte_length: uintptr;
extern class JSTypedArray extends JSArrayBufferView {
length: uintptr;
external_pointer: ExternalPointer;
// [base_pointer]: TODO(v8:4153)
base_pointer: ByteArray|Smi;
extern operator '.external_pointer_ptr' macro
LoadJSTypedArrayExternalPointerPtr(JSTypedArray): RawPtr;
extern operator '.external_pointer_ptr=' macro
StoreJSTypedArrayExternalPointerPtr(JSTypedArray, RawPtr);
extern class JSDataView extends JSArrayBufferView {
data_pointer: ExternalPointer;