forked from KolibriOS/kolibrios
73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
/**************************************************************************
|
|
*
|
|
* Copyright 2008-2010 VMware, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sub license, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the
|
|
* next paragraph) shall be included in all copies or substantial portions
|
|
* of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
|
|
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
|
|
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
**************************************************************************/
|
|
|
|
|
|
/*
|
|
* Memory alignment wrappers.
|
|
*/
|
|
|
|
|
|
#ifndef _OS_MEMORY_H_
|
|
#error "Must not be included directly. Include os_memory.h instead"
|
|
#endif
|
|
|
|
|
|
#include "pipe/p_compiler.h"
|
|
|
|
|
|
/**
|
|
* Return memory on given byte alignment
|
|
*/
|
|
static INLINE void *
|
|
os_malloc_aligned(size_t size, size_t alignment)
|
|
{
|
|
char *ptr, *buf;
|
|
|
|
ptr = (char *) os_malloc(size + alignment + sizeof(void *));
|
|
if (!ptr)
|
|
return NULL;
|
|
|
|
buf = (char *)(((uintptr_t)ptr + sizeof(void *) + alignment - 1) & ~((uintptr_t)(alignment - 1)));
|
|
*(char **)(buf - sizeof(void *)) = ptr;
|
|
|
|
return buf;
|
|
}
|
|
|
|
|
|
/**
|
|
* Free memory returned by align_malloc().
|
|
*/
|
|
static INLINE void
|
|
os_free_aligned(void *ptr)
|
|
{
|
|
if (ptr) {
|
|
void **cubbyHole = (void **) ((char *) ptr - sizeof(void *));
|
|
void *realAddr = *cubbyHole;
|
|
os_free(realAddr);
|
|
}
|
|
}
|