1/*
2 * Copyright (c) 2020, Michael Grunder <michael dot grunder at gmail dot com>
3 *
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * * Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 * * Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * * Neither the name of Redis nor the names of its contributors may be used
15 * to endorse or promote products derived from this software without
16 * specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "fmacros.h"
32#include "alloc.h"
33#include <string.h>
34#include <stdlib.h>
35
36hiredisAllocFuncs hiredisAllocFns = {
37 .mallocFn = malloc,
38 .callocFn = calloc,
39 .reallocFn = realloc,
40 .strdupFn = strdup,
41 .freeFn = free,
42};
43
44/* Override hiredis' allocators with ones supplied by the user */
45hiredisAllocFuncs hiredisSetAllocators(hiredisAllocFuncs *override) {
46 hiredisAllocFuncs orig = hiredisAllocFns;
47
48 hiredisAllocFns = *override;
49
50 return orig;
51}
52
53/* Reset allocators to use libc defaults */
54void hiredisResetAllocators(void) {
55 hiredisAllocFns = (hiredisAllocFuncs) {
56 .mallocFn = malloc,
57 .callocFn = calloc,
58 .reallocFn = realloc,
59 .strdupFn = strdup,
60 .freeFn = free,
61 };
62}
63
64#ifdef _WIN32
65
66void *hi_malloc(size_t size) {
67 return hiredisAllocFns.mallocFn(size);
68}
69
70void *hi_calloc(size_t nmemb, size_t size) {
71 /* Overflow check as the user can specify any arbitrary allocator */
72 if (SIZE_MAX / size < nmemb)
73 return NULL;
74
75 return hiredisAllocFns.callocFn(nmemb, size);
76}
77
78void *hi_realloc(void *ptr, size_t size) {
79 return hiredisAllocFns.reallocFn(ptr, size);
80}
81
82char *hi_strdup(const char *str) {
83 return hiredisAllocFns.strdupFn(str);
84}
85
86void hi_free(void *ptr) {
87 hiredisAllocFns.freeFn(ptr);
88}
89
90#endif
91