src/allocator.c@1e2be40f0cb5
src/allocator.c
Sun, 20 Nov 2022 21:08:36 +0100
- author
- Mike Becker <universe@uap-core.de>
- date
- Sun, 20 Nov 2022 21:08:36 +0100
- changeset 628
- 1e2be40f0cb5
- parent 508
- 8aea65ae1eaf
- child 650
- 77021e06b1a8
- permissions
- -rw-r--r--
use //-style single line comments everywhere
1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2021 Mike Becker, Olaf Wintermann 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 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
29 #include "cx/allocator.h"
31 #include <stdlib.h>
33 __attribute__((__malloc__, __alloc_size__(2)))
34 static void *cx_malloc_stdlib(
35 __attribute__((__unused__)) void *d,
36 size_t n
37 ) {
38 return malloc(n);
39 }
41 __attribute__((__warn_unused_result__, __alloc_size__(3)))
42 static void *cx_realloc_stdlib(
43 __attribute__((__unused__)) void *d,
44 void *mem,
45 size_t n
46 ) {
47 return realloc(mem, n);
48 }
50 __attribute__((__malloc__, __alloc_size__(2, 3)))
51 static void *cx_calloc_stdlib(
52 __attribute__((__unused__)) void *d,
53 size_t nelem,
54 size_t n
55 ) {
56 return calloc(nelem, n);
57 }
59 __attribute__((__nonnull__))
60 static void cx_free_stdlib(
61 __attribute__((__unused__)) void *d,
62 void *mem
63 ) {
64 free(mem);
65 }
67 static cx_allocator_class cx_default_allocator_class = {
68 cx_malloc_stdlib,
69 cx_realloc_stdlib,
70 cx_calloc_stdlib,
71 cx_free_stdlib
72 };
74 struct cx_allocator_s cx_default_allocator = {
75 &cx_default_allocator_class,
76 NULL
77 };
78 CxAllocator *cxDefaultAllocator = &cx_default_allocator;
80 // IMPLEMENTATION OF HIGH LEVEL API
82 void *cxMalloc(
83 CxAllocator const *allocator,
84 size_t n
85 ) {
86 return allocator->cl->malloc(allocator->data, n);
87 }
89 void *cxRealloc(
90 CxAllocator const *allocator,
91 void *mem,
92 size_t n
93 ) {
94 return allocator->cl->realloc(allocator->data, mem, n);
95 }
97 int cxReallocate(
98 CxAllocator const *allocator,
99 void **mem,
100 size_t n
101 ) {
102 void *nmem = allocator->cl->realloc(allocator->data, *mem, n);
103 if (nmem == NULL) {
104 return 1;
105 } else {
106 *mem = nmem;
107 return 0;
108 }
109 }
111 void *cxCalloc(
112 CxAllocator const *allocator,
113 size_t nelem,
114 size_t n
115 ) {
116 return allocator->cl->calloc(allocator->data, nelem, n);
117 }
119 void cxFree(
120 CxAllocator const *allocator,
121 void *mem
122 ) {
123 allocator->cl->free(allocator->data, mem);
124 }
