src/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 #include "util/u_debug.h"
  38 #include "util/os_memory.h"
  39
  40
  41 #ifdef __cplusplus
  42 extern "C" {
  43 #endif
  44
  45
  46 #define MALLOC(_size)  os_malloc(_size)
  47
  48 #define CALLOC(_count, _size) os_calloc(_count, _size)
  49
  50 #define FREE(_ptr ) os_free(_ptr)
  51
  52 #define REALLOC(_ptr, _old_size, _size) os_realloc(_ptr, _old_size, _size)
  53
  54 #define MALLOC_STRUCT(T)   (struct T *) MALLOC(sizeof(struct T))
  55
  56 #define CALLOC_STRUCT(T)   (struct T *) CALLOC(1, sizeof(struct T))
  57
  58 #define CALLOC_VARIANT_LENGTH_STRUCT(T,more_size)   ((struct T *) CALLOC(1, sizeof(struct T) + more_size))
  59
  60
  61 #define align_malloc(_size, _alignment) os_malloc_aligned(_size, _alignment)
  62 #define align_free(_ptr) os_free_aligned(_ptr)
  63 #define align_realloc(_ptr, _oldsize, _newsize, _alignment) os_realloc_aligned(_ptr, _oldsize, _newsize, _alignment)
  64
  65 static inline void *
  66 align_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  */
  77 static inline void *
  78 mem_dup(const void *src, size_t 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 */