Mercurial > molko

comparison src/libmlk-core/core/alloc.h @ 320:8f9937403749

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
misc: improve loading of data
author David Demelier <markand@malikania.fr>
date Fri, 01 Oct 2021 20:30:00 +0200
parents libmlk-core/core/alloc.h@d01e83210ca2
children 19782ea1cf4a
comparison
equal deleted inserted replaced
319:b843eef4cc35 320:8f9937403749
1 /*
2 * alloc.h -- custom allocators
3 *
4 * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr>
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #ifndef MOLKO_CORE_ALLOC_H
20 #define MOLKO_CORE_ALLOC_H
21
22 #include <stddef.h>
23
24 #include "core.h"
25 #include "util.h"
26
27 /* Must be power of 2. */
28 #define ALLOC_POOL_INIT_DEFAULT (32)
29
30 /* Custom allocator. */
31 struct alloc_funcs {
32 void *(*alloc)(size_t);
33 void *(*realloc)(void *, size_t);
34 void (*free)(void *);
35 };
36
37 /* Minimalist growable array for loading data. */
38 struct alloc_pool {
39 void *data;
40 size_t elemsize;
41 size_t size;
42 size_t capacity;
43 void (*finalizer)(void *);
44 };
45
46 CORE_BEGIN_DECLS
47
48 /* allocator functions. */
49 void
50 alloc_set(const struct alloc_funcs *);
51
52 void *
53 alloc_new(size_t);
54
55 void *
56 alloc_new0(size_t);
57
58 void *
59 alloc_array(size_t, size_t);
60
61 void *
62 alloc_array0(size_t, size_t);
63
64 void *
65 alloc_renew(void *, size_t);
66
67 void *
68 alloc_rearray(void *, size_t, size_t);
69
70 void *
71 alloc_rearray0(void *, size_t, size_t, size_t);
72
73 void *
74 alloc_dup(const void *, size_t);
75
76 char *
77 alloc_sdup(const char *);
78
79 /* alloc_pool functions. */
80 int
81 alloc_pool_init(struct alloc_pool *, size_t , void (*)(void *));
82
83 void *
84 alloc_pool_new(struct alloc_pool *);
85
86 void *
87 alloc_pool_get(const struct alloc_pool *, size_t);
88
89 void
90 alloc_pool_finish(struct alloc_pool *);
91
92 CORE_END_DECLS
93
94 #endif /* !MOLKO_CORE_ALLOC_H */