Mon, 01 Mar 2021 22:19:06 +0100
adds cxReallocate()
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>
32 #include <errno.h>
34 void *cx_malloc_stdlib(void *unused, size_t n) {
35 return malloc(n);
36 }
38 void *cx_realloc_stdlib(void *unused, void *mem, size_t n) {
39 return realloc(mem, n);
40 }
42 void *cx_calloc_stdlib(void *unused, size_t nelem, size_t n) {
43 return calloc(nelem, n);
44 }
46 void cx_free_stdlib(void *unused, void *mem) {
47 free(mem);
48 }
50 cx_allocator_class cx_default_allocator_class = {
51 cx_malloc_stdlib,
52 cx_realloc_stdlib,
53 cx_calloc_stdlib,
54 cx_free_stdlib
55 };
57 struct cx_allocator_s cx_default_allocator = {
58 &cx_default_allocator_class,
59 NULL
60 };
61 CxAllocator cxDefaultAllocator = &cx_default_allocator;
63 void *cxMalloc(CxAllocator allocator, size_t n) {
64 return allocator->cl->malloc(allocator->data, n);
65 }
67 void *cxRealloc(CxAllocator allocator, void *mem, size_t n) {
68 return allocator->cl->realloc(allocator->data, mem, n);
69 }
71 int cxReallocate(CxAllocator allocator, void **mem, size_t n) {
72 if (mem == NULL) {
73 errno = EINVAL;
74 return 1;
75 }
76 void* nmem = allocator->cl->realloc(allocator->data, *mem, n);
77 if (nmem == NULL) {
78 return 1;
79 } else {
80 *mem = nmem;
81 return 0;
82 }
83 }
85 void *cxCalloc(CxAllocator allocator, size_t nelem, size_t n) {
86 return allocator->cl->calloc(allocator->data, nelem, n);
87 }
89 void cxFree(CxAllocator allocator, void *mem) {
90 allocator->cl->free(allocator->data, mem);
91 }