1 /*
2 * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without modification,
5 * are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright notice, this list of
8 * conditions and the following disclaimer.
9 *
10 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
11 * of conditions and the following disclaimer in the documentation and/or other materials
12 * provided with the distribution.
13 *
14 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
15 * to endorse or promote products derived from this software without specific prior written
16 * permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
22 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
25 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
27 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
28 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include <stdint.h>
32 #include "securec.h"
33 #include "los_config.h"
34 #include "los_memory.h"
35
calloc(size_t nitems,size_t size)36 void *calloc(size_t nitems, size_t size)
37 {
38 size_t real_size;
39 void *ptr = NULL;
40
41 if ((nitems == 0) || (size == 0) || (nitems > (UINT32_MAX / size))) {
42 return NULL;
43 }
44
45 real_size = (size_t)(nitems * size);
46 ptr = LOS_MemAlloc(OS_SYS_MEM_ADDR, real_size);
47 if (ptr != NULL) {
48 (void)memset_s(ptr, real_size, 0, real_size);
49 }
50 return ptr;
51 }
52
free(void * ptr)53 void free(void *ptr)
54 {
55 if (ptr == NULL) {
56 return;
57 }
58
59 LOS_MemFree(OS_SYS_MEM_ADDR, ptr);
60 }
61
malloc(size_t size)62 void *malloc(size_t size)
63 {
64 if (size == 0) {
65 return NULL;
66 }
67
68 return LOS_MemAlloc(OS_SYS_MEM_ADDR, size);
69 }
70
zalloc(size_t size)71 void *zalloc(size_t size)
72 {
73 void *ptr = NULL;
74
75 if (size == 0) {
76 return NULL;
77 }
78
79 ptr = LOS_MemAlloc(OS_SYS_MEM_ADDR, size);
80 if (ptr != NULL) {
81 (void)memset_s(ptr, size, 0, size);
82 }
83 return ptr;
84 }
85
memalign(size_t boundary,size_t size)86 void *memalign(size_t boundary, size_t size)
87 {
88 if (size == 0) {
89 return NULL;
90 }
91
92 return LOS_MemAllocAlign(OS_SYS_MEM_ADDR, size, boundary);
93 }
94
realloc(void * ptr,size_t size)95 void *realloc(void *ptr, size_t size)
96 {
97 if (ptr == NULL) {
98 return malloc(size);
99 }
100
101 if (size == 0) {
102 free(ptr);
103 return NULL;
104 }
105
106 return LOS_MemRealloc(OS_SYS_MEM_ADDR, ptr, size);
107 }
108