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/**
* @file
*
* @ingroup RTEMSImplClassic
*
* @brief This source file contains the implementation of
* rtems_workspace_greedy_allocate(),
* rtems_workspace_greedy_allocate_all_except_largest(), and
* rtems_workspace_greedy_free().
*/
/*
* Copyright (c) 2012 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Obere Lagerstr. 30
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* 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/rtems/support.h>
#include <rtems/score/apimutex.h>
#include <rtems/score/heapimpl.h>
#include <rtems/score/threaddispatch.h>
#include <rtems/score/wkspace.h>
#include <rtems/malloc.h>
#define SBRK_ALLOC_SIZE (128 * 1024UL * 1024UL)
void *rtems_workspace_greedy_allocate(
const uintptr_t *block_sizes,
size_t block_count
)
{
Heap_Control *heap = &_Workspace_Area;
void *opaque;
rtems_heap_sbrk_greedy_allocate( heap, SBRK_ALLOC_SIZE );
_RTEMS_Lock_allocator();
opaque = _Heap_Greedy_allocate( heap, block_sizes, block_count );
_RTEMS_Unlock_allocator();
return opaque;
}
void *rtems_workspace_greedy_allocate_all_except_largest(
uintptr_t *allocatable_size
)
{
Heap_Control *heap = &_Workspace_Area;
void *opaque;
rtems_heap_sbrk_greedy_allocate( heap, SBRK_ALLOC_SIZE );
_RTEMS_Lock_allocator();
opaque = _Heap_Greedy_allocate_all_except_largest(
heap,
allocatable_size
);
_RTEMS_Unlock_allocator();
return opaque;
}
void rtems_workspace_greedy_free( void *opaque )
{
_RTEMS_Lock_allocator();
_Heap_Greedy_free( &_Workspace_Area, opaque );
_RTEMS_Unlock_allocator();
}
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