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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
#include "allocator.h"
#include <errno.h>
#include <stdlib.h>
static void *stdlib_heap_alloc(const struct allocator *allocator,
size_t size, int *rc);
static void *stdlib_heap_realloc(const struct allocator *allocator,
void *p, size_t size, int *rc);
static int stdlib_heap_free(const struct allocator *allocator, void *p);
static void *stdlib_strict_heap_alloc(const struct allocator *allocator,
size_t size, int *rc);
static void *stdlib_strict_heap_realloc(const struct allocator *allocator,
void *p, size_t size, int *rc);
static int stdlib_strict_heap_free(const struct allocator *allocator, void *p);
const struct allocator stdlib_heap_allocator = {
.alloc = stdlib_heap_alloc,
.realloc = stdlib_heap_realloc,
.free = stdlib_heap_free
};
const struct allocator stdlib_strict_heap_allocator = {
.alloc = stdlib_strict_heap_alloc,
.realloc = stdlib_strict_heap_realloc,
.free = stdlib_strict_heap_free
};
void *
stdlib_heap_alloc(const struct allocator *allocator, size_t size, int *rc)
{
void *p;
p = malloc(size);
if (rc && !p) *rc = errno;
return p;
}
void *
stdlib_heap_realloc(const struct allocator *allocator,
void *p, size_t size, int *rc)
{
void *np;
np = realloc(p, size);
if (rc && !np) *rc = errno;
return np;
}
int
stdlib_heap_free(const struct allocator *allocator, void *p)
{
free(p);
return 0;
}
void *
stdlib_strict_heap_alloc(const struct allocator *allocator,
size_t size, int *rc)
{
void *p;
p = malloc(size);
if (!p) abort();
return p;
}
void *
stdlib_strict_heap_realloc(const struct allocator *allocator,
void *p, size_t size, int *rc)
{
void *np;
np = realloc(p, size);
if (!np) abort();
return np;
}
int
stdlib_strict_heap_free(const struct allocator *allocator, void *p)
{
free(p);
return 0;
}
void *
strict_allocator_alloc(const struct allocator *allocator, size_t size, int *rc)
{
const struct strict_allocator *strict_allocator;
void *p;
strict_allocator = ((void *) allocator)
- offsetof(struct strict_allocator, allocator);
p = strict_allocator->allocator_ul->alloc(
strict_allocator->allocator_ul, size, rc);
if (!p) abort();
return p;
}
void *
strict_allocator_realloc(const struct allocator *allocator,
void *p, size_t size, int *rc)
{
const struct strict_allocator *strict_allocator;
void *np;
strict_allocator = ((void *) allocator)
- offsetof(struct strict_allocator, allocator);
np = strict_allocator->allocator_ul->realloc(
strict_allocator->allocator_ul, p, size, rc);
if (!np) abort();
return np;
}
int
strict_allocator_free(const struct allocator *allocator, void *p)
{
const struct strict_allocator *strict_allocator;
int rc;
strict_allocator = ((void *) allocator)
- offsetof(struct strict_allocator, allocator);
rc = strict_allocator->allocator_ul->free(
strict_allocator->allocator_ul, p);
if (rc) abort();
return 0;
}
void
strict_allocator_init(struct strict_allocator *strict_allocator,
const struct allocator *allocator_ul)
{
strict_allocator->allocator_ul = allocator_ul;
strict_allocator->allocator.alloc = strict_allocator_alloc;
strict_allocator->allocator.realloc = strict_allocator_realloc;
strict_allocator->allocator.free = strict_allocator_free;
}
|
