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
|
/*
* This file is part of RTRlib.
*
* This file is subject to the terms and conditions of the MIT license.
* See the file LICENSE in the top level directory for more details.
*
* Website: http://rtrlib.realmv6.org/
*/
#include "alloc_utils_private.h"
#include "rtrlib/rtrlib_export_private.h"
#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
static void *(*MALLOC_PTR)(size_t size) = malloc;
static void *(*REALLOC_PTR)(void *ptr, size_t size) = realloc;
static void (*FREE_PTR)(void *ptr) = free;
/* cppcheck-suppress unusedFunction */
RTRLIB_EXPORT void lrtr_set_alloc_functions(void *(*malloc_function)(size_t size),
void *(*realloc_function)(void *ptr, size_t size),
void(free_function)(void *ptr))
{
MALLOC_PTR = malloc_function;
REALLOC_PTR = realloc_function;
FREE_PTR = free_function;
}
inline void *lrtr_malloc(size_t size)
{
return MALLOC_PTR(size);
}
/* cppcheck-suppress unusedFunction */
void *lrtr_calloc(size_t nmemb, size_t size)
{
int bytes = 0;
#if __GNUC__ >= 5
if (__builtin_mul_overflow(nmemb, size, &bytes)) {
errno = ENOMEM;
return 0;
}
#else
if (size && nmemb > (size_t)-1 / size) {
errno = ENOMEM;
return 0;
}
bytes = size * nmemb;
#endif
void *p = lrtr_malloc(bytes);
if (!p)
return p;
return memset(p, 0, bytes);
}
inline void lrtr_free(void *ptr)
{
return FREE_PTR(ptr);
}
inline void *lrtr_realloc(void *ptr, size_t size)
{
return REALLOC_PTR(ptr, size);
}
char *lrtr_strdup(const char *string)
{
assert(string);
size_t length = strlen(string) + 1;
char *new_string = lrtr_malloc(length);
return new_string ? memcpy(new_string, string, length) : NULL;
}
|
