66c3ba4e4106e402f6eecde6af695b4eae45c342
[mesa.git] / src / gallium / auxiliary / util / u_memory.h
1 /**************************************************************************
2 *
3 * Copyright 2008 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28
29 /*
30 * Memory functions
31 */
32
33
34 #ifndef U_MEMORY_H
35 #define U_MEMORY_H
36
37
38 #include "util/u_pointer.h"
39 #include "util/u_debug.h"
40 #include "os/os_memory.h"
41
42
43 #ifdef __cplusplus
44 extern "C" {
45 #endif
46
47
48 #define MALLOC(_size) os_malloc(_size)
49
50 #define CALLOC(_count, _size) os_calloc(_count, _size)
51
52 #define FREE(_ptr ) os_free(_ptr)
53
54 #define REALLOC(_ptr, _old_size, _size) os_realloc(_ptr, _old_size, _size)
55
56 #define MALLOC_STRUCT(T) (struct T *) MALLOC(sizeof(struct T))
57
58 #define CALLOC_STRUCT(T) (struct T *) CALLOC(1, sizeof(struct T))
59
60 #define CALLOC_VARIANT_LENGTH_STRUCT(T,more_size) ((struct T *) CALLOC(1, sizeof(struct T) + more_size))
61
62
63 #define align_malloc(_size, _alignment) os_malloc_aligned(_size, _alignment)
64 #define align_free(_ptr) os_free_aligned(_ptr)
65
66 static inline void *
67 align_calloc(size_t size, unsigned long alignment)
68 {
69 void *ptr = align_malloc(size, alignment);
70 if (ptr)
71 memset(ptr, 0, size);
72 return ptr;
73 }
74
75 /**
76 * Duplicate a block of memory.
77 */
78 static inline void *
79 mem_dup(const void *src, uint size)
80 {
81 void *dup = MALLOC(size);
82 if (dup)
83 memcpy(dup, src, size);
84 return dup;
85 }
86
87
88 /**
89 * Offset of a field in a struct, in bytes.
90 */
91 #define Offset(TYPE, MEMBER) ((uintptr_t)&(((TYPE *)NULL)->MEMBER))
92
93
94
95 #ifdef __cplusplus
96 }
97 #endif
98
99
100 #endif /* U_MEMORY_H */