1/*
2 * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26#ifndef MM_INTERNAL_H_INCLUDED_
27#define MM_INTERNAL_H_INCLUDED_
28
29#include <sys/types.h>
30
31#ifdef __cplusplus
32extern "C" {
33#endif
34
35#ifndef EVENT__DISABLE_MM_REPLACEMENT
36/* Internal use only: Memory allocation functions. We give them nice short
37 * mm_names for our own use, but make sure that the symbols have longer names
38 * so they don't conflict with other libraries (like, say, libmm). */
39
40/** Allocate uninitialized memory.
41 *
42 * @return On success, return a pointer to sz newly allocated bytes.
43 *     On failure, set errno to ENOMEM and return NULL.
44 *     If the argument sz is 0, simply return NULL.
45 */
46EVENT2_EXPORT_SYMBOL
47void *event_mm_malloc_(size_t sz);
48
49/** Allocate memory initialized to zero.
50 *
51 * @return On success, return a pointer to (count * size) newly allocated
52 *     bytes, initialized to zero.
53 *     On failure, or if the product would result in an integer overflow,
54 *     set errno to ENOMEM and return NULL.
55 *     If either arguments are 0, simply return NULL.
56 */
57EVENT2_EXPORT_SYMBOL
58void *event_mm_calloc_(size_t count, size_t size);
59
60/** Duplicate a string.
61 *
62 * @return On success, return a pointer to a newly allocated duplicate
63 *     of a string.
64 *     Set errno to ENOMEM and return NULL if a memory allocation error
65 *     occurs (or would occur) in the process.
66 *     If the argument str is NULL, set errno to EINVAL and return NULL.
67 */
68EVENT2_EXPORT_SYMBOL
69char *event_mm_strdup_(const char *str);
70
71EVENT2_EXPORT_SYMBOL
72void *event_mm_realloc_(void *p, size_t sz);
73EVENT2_EXPORT_SYMBOL
74void event_mm_free_(void *p);
75#define mm_malloc(sz) event_mm_malloc_(sz)
76#define mm_calloc(count, size) event_mm_calloc_((count), (size))
77#define mm_strdup(s) event_mm_strdup_(s)
78#define mm_realloc(p, sz) event_mm_realloc_((p), (sz))
79#define mm_free(p) event_mm_free_(p)
80#else
81#define mm_malloc(sz) malloc(sz)
82#define mm_calloc(n, sz) calloc((n), (sz))
83#define mm_strdup(s) strdup(s)
84#define mm_realloc(p, sz) realloc((p), (sz))
85#define mm_free(p) free(p)
86#endif
87
88#ifdef __cplusplus
89}
90#endif
91
92#endif
93