blob: 70f535a8f057b3bc10ee3a6febbafdc6027207e2 (
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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
// 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_PROPERTY_ARRAY_H_
#define V8_OBJECTS_PROPERTY_ARRAY_H_
#include "src/objects.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
class PropertyArray : public HeapObject {
public:
// [length]: length of the array.
inline int length() const;
// Get the length using acquire loads.
inline int synchronized_length() const;
// This is only used on a newly allocated PropertyArray which
// doesn't have an existing hash.
inline void initialize_length(int length);
inline void SetHash(int hash);
inline int Hash() const;
inline Object* get(int index) const;
inline void set(int index, Object* value);
// Setter with explicit barrier mode.
inline void set(int index, Object* value, WriteBarrierMode mode);
// Gives access to raw memory which stores the array's data.
inline Object** data_start();
// Garbage collection support.
static constexpr int SizeFor(int length) {
return kHeaderSize + length * kPointerSize;
}
DECL_CAST(PropertyArray)
DECL_PRINTER(PropertyArray)
DECL_VERIFIER(PropertyArray)
// Layout description.
static const int kLengthAndHashOffset = HeapObject::kHeaderSize;
static const int kHeaderSize = kLengthAndHashOffset + kPointerSize;
// Garbage collection support.
typedef FlexibleBodyDescriptor<kHeaderSize> BodyDescriptor;
static const int kLengthFieldSize = 10;
class LengthField : public BitField<int, 0, kLengthFieldSize> {};
static const int kMaxLength = LengthField::kMax;
class HashField : public BitField<int, kLengthFieldSize,
kSmiValueSize - kLengthFieldSize - 1> {};
static const int kNoHashSentinel = 0;
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(PropertyArray);
};
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_PROPERTY_ARRAY_H_
|
