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/*
* rtems_memalign() - Raw aligned allocate from Protected Heap
*
* COPYRIGHT (c) 1989-2008.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef RTEMS_NEWLIB
#include "malloc_p.h"
#include <stdlib.h>
#include <errno.h>
int rtems_memalign(
void **pointer,
size_t alignment,
size_t size
)
{
void *return_this;
/*
* Parameter error checks
*/
if ( !pointer )
return EINVAL;
*pointer = NULL;
/*
* Do not attempt to allocate memory if not in correct system state.
*/
if ( _System_state_Is_up(_System_state_Get()) &&
!malloc_is_system_state_OK() )
return EINVAL;
/*
*
* If some free's have been deferred, then do them now.
*/
malloc_deferred_frees_process();
#if defined(RTEMS_MALLOC_BOUNDARY_HELPERS)
/*
* If the support for a boundary area at the end of the heap
* block allocated is turned on, then adjust the size.
*/
if (rtems_malloc_boundary_helpers)
size += (*rtems_malloc_boundary_helpers->overhead)();
#endif
/*
* Perform the aligned allocation requested
*/
return_this = _Protected_heap_Allocate_aligned(
&RTEMS_Malloc_Heap,
size,
alignment
);
if ( !return_this )
return ENOMEM;
/*
* If configured, update the more involved statistics
*/
if ( rtems_malloc_statistics_helpers )
(*rtems_malloc_statistics_helpers->at_malloc)(pointer);
#if defined(RTEMS_MALLOC_BOUNDARY_HELPERS)
/*
* If configured, set the boundary area
*/
if (rtems_malloc_boundary_helpers)
(*rtems_malloc_boundary_helpers->at_malloc)(return_this, size);
#endif
*pointer = return_this;
return 0;
}
#endif
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