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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
  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 TUNGSTEN GRAPHICS 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.  
  67. /**
  68.  * Duplicate a block of memory.
  69.  */
  70. static INLINE void *
  71. mem_dup(const void *src, uint size)
  72. {
  73.    void *dup = MALLOC(size);
  74.    if (dup)
  75.       memcpy(dup, src, size);
  76.    return dup;
  77. }
  78.  
  79.  
  80. /**
  81.  * Number of elements in an array.
  82.  */
  83. #ifndef Elements
  84. #define Elements(x) (sizeof(x)/sizeof((x)[0]))
  85. #endif
  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 */
  101.