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#ifndef HIREDIS_ALLOC_H
32#define HIREDIS_ALLOC_H
33
34#include <stddef.h> /* for size_t */
35#include <stdint.h>
36
37#ifdef __cplusplus
38extern "C" {
39#endif
40
41/* Structure pointing to our actually configured allocators */
42typedef struct hiredisAllocFuncs {
43 void *(*mallocFn)(size_t);
44 void *(*callocFn)(size_t,size_t);
45 void *(*reallocFn)(void*,size_t);
46 char *(*strdupFn)(const char*);
47 void (*freeFn)(void*);
48} hiredisAllocFuncs;
49
50hiredisAllocFuncs hiredisSetAllocators(hiredisAllocFuncs *ha);
51void hiredisResetAllocators(void);
52
53#ifndef _WIN32
54
55/* Hiredis' configured allocator function pointer struct */
56extern hiredisAllocFuncs hiredisAllocFns;
57
58static inline void *hi_malloc(size_t size) {
59 return hiredisAllocFns.mallocFn(size);
60}
61
62static inline void *hi_calloc(size_t nmemb, size_t size) {
63 /* Overflow check as the user can specify any arbitrary allocator */
64 if (SIZE_MAX / size < nmemb)
65 return NULL;
66
67 return hiredisAllocFns.callocFn(nmemb, size);
68}
69
70static inline void *hi_realloc(void *ptr, size_t size) {
71 return hiredisAllocFns.reallocFn(ptr, size);
72}
73
74static inline char *hi_strdup(const char *str) {
75 return hiredisAllocFns.strdupFn(str);
76}
77
78static inline void hi_free(void *ptr) {
79 hiredisAllocFns.freeFn(ptr);
80}
81
82#else
83
84void *hi_malloc(size_t size);
85void *hi_calloc(size_t nmemb, size_t size);
86void *hi_realloc(void *ptr, size_t size);
87char *hi_strdup(const char *str);
88void hi_free(void *ptr);
89
90#endif
91
92#ifdef __cplusplus
93}
94#endif
95
96#endif /* HIREDIS_ALLOC_H */
97