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/**
* @file
*
* @ingroup ScoreHeap
*
* @brief Heap Handler implementation.
*/
/*
* COPYRIGHT (c) 1989-1999.
* 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.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/system.h>
#include <rtems/score/heapimpl.h>
bool _Heap_Size_of_alloc_area(
Heap_Control *heap,
void *alloc_begin_ptr,
uintptr_t *alloc_size
)
{
uintptr_t const page_size = heap->page_size;
uintptr_t const alloc_begin = (uintptr_t) alloc_begin_ptr;
Heap_Block *block = _Heap_Block_of_alloc_area( alloc_begin, page_size );
Heap_Block *next_block = NULL;
uintptr_t block_size = 0;
if ( !_Heap_Is_block_in_heap( heap, block ) ) {
return false;
}
block_size = _Heap_Block_size( block );
next_block = _Heap_Block_at( block, block_size );
if (
!_Heap_Is_block_in_heap( heap, next_block )
|| !_Heap_Is_prev_used( next_block )
) {
return false;
}
*alloc_size = (uintptr_t) next_block + HEAP_ALLOC_BONUS - alloc_begin;
return true;
}
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