1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2022 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <stdint.h>
33 #include "securec.h"
34 #include "los_config.h"
35 #include "los_memory.h"
36
calloc(size_t nitems,size_t size)37 void *calloc(size_t nitems, size_t size)
38 {
39 size_t real_size;
40 void *ptr = NULL;
41
42 if ((nitems == 0) || (size == 0) || (nitems > (UINT32_MAX / size))) {
43 return NULL;
44 }
45
46 real_size = (size_t)(nitems * size);
47 ptr = LOS_MemAlloc(OS_SYS_MEM_ADDR, real_size);
48 if (ptr != NULL) {
49 (void)memset_s(ptr, real_size, 0, real_size);
50 }
51 return ptr;
52 }
53
free(void * ptr)54 void free(void *ptr)
55 {
56 if (ptr == NULL) {
57 return;
58 }
59
60 LOS_MemFree(OS_SYS_MEM_ADDR, ptr);
61 }
62
malloc(size_t size)63 void *malloc(size_t size)
64 {
65 if (size == 0) {
66 return NULL;
67 }
68
69 return LOS_MemAlloc(OS_SYS_MEM_ADDR, size);
70 }
71
zalloc(size_t size)72 void *zalloc(size_t size)
73 {
74 void *ptr = NULL;
75
76 if (size == 0) {
77 return NULL;
78 }
79
80 ptr = LOS_MemAlloc(OS_SYS_MEM_ADDR, size);
81 if (ptr != NULL) {
82 (void)memset_s(ptr, size, 0, size);
83 }
84 return ptr;
85 }
86
memalign(size_t boundary,size_t size)87 void *memalign(size_t boundary, size_t size)
88 {
89 if (size == 0) {
90 return NULL;
91 }
92
93 return LOS_MemAllocAlign(OS_SYS_MEM_ADDR, size, boundary);
94 }
95
realloc(void * ptr,size_t size)96 void *realloc(void *ptr, size_t size)
97 {
98 if (ptr == NULL) {
99 return malloc(size);
100 }
101
102 if (size == 0) {
103 free(ptr);
104 return NULL;
105 }
106
107 return LOS_MemRealloc(OS_SYS_MEM_ADDR, ptr, size);
108 }
109