u_memory.h revision b8e80941 
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#include "util/u_pointer.h"
38#include "util/u_debug.h"
39#include "util/os_memory.h"
40
41
42#ifdef __cplusplus
43extern "C" {
44#endif
45
46
47#define MALLOC(_size)  os_malloc(_size)
48
49#define CALLOC(_count, _size) os_calloc(_count, _size)
50
51#define FREE(_ptr ) os_free(_ptr)
52
53#define REALLOC(_ptr, _old_size, _size) os_realloc(_ptr, _old_size, _size)
54
55#define MALLOC_STRUCT(T)   (struct T *) MALLOC(sizeof(struct T))
56
57#define CALLOC_STRUCT(T)   (struct T *) CALLOC(1, sizeof(struct T))
58
59#define CALLOC_VARIANT_LENGTH_STRUCT(T,more_size)   ((struct T *) CALLOC(1, sizeof(struct T) + more_size))
60
61
62#define align_malloc(_size, _alignment) os_malloc_aligned(_size, _alignment)
63#define align_free(_ptr) os_free_aligned(_ptr)
64
65static inline void *
66align_calloc(size_t size, unsigned long alignment)
67{
68   void *ptr = align_malloc(size, alignment);
69   if (ptr)
70      memset(ptr, 0, size);
71   return ptr;
72}
73
74/**
75 * Duplicate a block of memory.
76 */
77static inline void *
78mem_dup(const void *src, uint size)
79{
80   void *dup = MALLOC(size);
81   if (dup)
82      memcpy(dup, src, size);
83   return dup;
84}
85
86
87/**
88 * Offset of a field in a struct, in bytes.
89 */
90#define Offset(TYPE, MEMBER) ((uintptr_t)&(((TYPE *)NULL)->MEMBER))
91
92
93
94#ifdef __cplusplus
95}
96#endif
97
98
99#endif /* U_MEMORY_H */
100