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      1 /**************************************************************************
      2  *
      3  * Copyright 2008-2010 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  * OS memory management abstractions for the standard C library.
     31  */
     32 
     33 
     34 #ifndef _OS_MEMORY_H_
     35 #error "Must not be included directly. Include os_memory.h instead"
     36 #endif
     37 
     38 #include <stdlib.h>
     39 
     40 #include "pipe/p_compiler.h"
     41 
     42 
     43 #define os_malloc(_size)  malloc(_size)
     44 #define os_calloc(_count, _size )  calloc(_count, _size )
     45 #define os_free(_ptr)  free(_ptr)
     46 
     47 #define os_realloc( _old_ptr, _old_size, _new_size) \
     48    realloc(_old_ptr, _new_size + 0*(_old_size))
     49 
     50 
     51 #if defined(HAVE_POSIX_MEMALIGN)
     52 
     53 static inline void *
     54 os_malloc_aligned(size_t size, size_t alignment)
     55 {
     56    void *ptr;
     57    alignment = (alignment + sizeof(void*) - 1) & ~(sizeof(void*) - 1);
     58    if(posix_memalign(&ptr, alignment, size) != 0)
     59       return NULL;
     60    return ptr;
     61 }
     62 
     63 #define os_free_aligned(_ptr) free(_ptr)
     64 
     65 #elif defined(PIPE_OS_WINDOWS)
     66 
     67 #include <malloc.h>
     68 
     69 #define os_malloc_aligned(_size, _align) _aligned_malloc(_size, _align)
     70 #define os_free_aligned(_ptr) _aligned_free(_ptr)
     71 
     72 #else
     73 
     74 #include "os_memory_aligned.h"
     75 
     76 #endif
     77