blob: b99f01b230c52db6c11e90a49c608919ae6ccfab (
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
74
75
76
|
// Copyright 2014 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_BASE_MACROS_H_
#define V8_BASE_MACROS_H_
#include "../../include/v8stdint.h"
// The expression OFFSET_OF(type, field) computes the byte-offset
// of the specified field relative to the containing type. This
// corresponds to 'offsetof' (in stddef.h), except that it doesn't
// use 0 or NULL, which causes a problem with the compiler warnings
// we have enabled (which is also why 'offsetof' doesn't seem to work).
// Here we simply use the non-zero value 4, which seems to work.
#define OFFSET_OF(type, field) \
(reinterpret_cast<intptr_t>(&(reinterpret_cast<type*>(4)->field)) - 4)
// The expression ARRAY_SIZE(a) is a compile-time constant of type
// size_t which represents the number of elements of the given
// array. You should only use ARRAY_SIZE on statically allocated
// arrays.
#define ARRAY_SIZE(a) \
((sizeof(a) / sizeof(*(a))) / \
static_cast<size_t>(!(sizeof(a) % sizeof(*(a)))))
// A macro to disallow the evil copy constructor and operator= functions
// This should be used in the private: declarations for a class
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&) V8_DELETE; \
void operator=(const TypeName&) V8_DELETE
// A macro to disallow all the implicit constructors, namely the
// default constructor, copy constructor and operator= functions.
//
// This should be used in the private: declarations for a class
// that wants to prevent anyone from instantiating it. This is
// especially useful for classes containing only static methods.
#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
TypeName() V8_DELETE; \
DISALLOW_COPY_AND_ASSIGN(TypeName)
// Newly written code should use V8_INLINE and V8_NOINLINE directly.
#define INLINE(declarator) V8_INLINE declarator
#define NO_INLINE(declarator) V8_NOINLINE declarator
// Newly written code should use V8_WARN_UNUSED_RESULT.
#define MUST_USE_RESULT V8_WARN_UNUSED_RESULT
// Define DISABLE_ASAN macros.
#if defined(__has_feature)
#if __has_feature(address_sanitizer)
#define DISABLE_ASAN __attribute__((no_sanitize_address))
#endif
#endif
#ifndef DISABLE_ASAN
#define DISABLE_ASAN
#endif
#if V8_CC_GNU
#define V8_IMMEDIATE_CRASH() __builtin_trap()
#else
#define V8_IMMEDIATE_CRASH() ((void(*)())0)()
#endif
#endif // V8_BASE_MACROS_H_
|
