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/**
* @file
*
* @brief RTEMS_Malloc_Initialize() implementation.
*/
/*
* COPYRIGHT (c) 1989-2012.
* 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.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/malloc.h>
#include <rtems/score/wkspace.h>
#include "malloc_p.h"
#ifdef RTEMS_NEWLIB
static Heap_Control _Malloc_Heap;
Heap_Control *RTEMS_Malloc_Initialize(
const Memory_Information *mem,
Heap_Initialization_or_extend_handler extend
)
{
Heap_Control *heap;
Heap_Initialization_or_extend_handler init_or_extend;
uintptr_t page_size;
size_t i;
heap = &_Malloc_Heap;
RTEMS_Malloc_Heap = heap;
init_or_extend = _Heap_Initialize;
page_size = CPU_HEAP_ALIGNMENT;
for (i = 0; i < _Memory_Get_count( mem ); ++i) {
Memory_Area *area;
uintptr_t space_available;
area = _Memory_Get_area( mem, i );
space_available = ( *init_or_extend )(
heap,
_Memory_Get_free_begin( area ),
_Memory_Get_free_size( area ),
page_size
);
if ( space_available > 0 ) {
_Memory_Consume( area, _Memory_Get_free_size( area ) );
init_or_extend = extend;
}
}
if ( init_or_extend == _Heap_Initialize ) {
_Internal_error( INTERNAL_ERROR_NO_MEMORY_FOR_HEAP );
}
return heap;
}
#else
Heap_Control *RTEMS_Malloc_Initialize(
const Memory_Information *mem,
Heap_Initialization_or_extend_handler extend
)
{
/* FIXME: Dummy function */
return NULL;
}
#endif
Heap_Control *_Workspace_Malloc_initialize_separate( void )
{
return RTEMS_Malloc_Initialize( _Memory_Get(), _Heap_Extend );
}
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