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      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 */
    101