blob: bd99ca74432b026d8fa12c8ee6ec1ec234505b97 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
// 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;
}
@generateCppClass
extern class JSArrayBuffer extends JSObject {
byte_length: uintptr;
backing_store: ExternalPointer;
@if(V8_ARRAY_BUFFER_EXTENSION_BOOL) extension: RawPtr;
@ifnot(V8_ARRAY_BUFFER_EXTENSION_BOOL) extension: void;
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;
@export
macro IsDetachedBuffer(buffer: JSArrayBuffer): bool {
return buffer.bit_field.was_detached;
}
macro IsSharedArrayBuffer(buffer: JSArrayBuffer): bool {
return buffer.bit_field.is_shared;
}
@abstract
@generateCppClass
extern class JSArrayBufferView extends JSObject {
buffer: JSArrayBuffer;
byte_offset: uintptr;
byte_length: uintptr;
}
@generateCppClass
extern class JSTypedArray extends JSArrayBufferView {
length: uintptr;
external_pointer: ExternalPointer;
// [base_pointer]: TODO(v8:4153)
base_pointer: ByteArray|Smi;
}
@generateCppClass
extern class JSDataView extends JSArrayBufferView {
data_pointer: ExternalPointer;
}
|
