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[/] [or1k/] [trunk/] [rtems-20020807/] [cpukit/] [score/] [macros/] [rtems/] [score/] [heap.inl] - Blame information for rev 1765

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1 1026 ivang 
/*  heap.inl
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 *
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 *  This file contains the macro implementation of the inlined
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 *  routines from the heap handler.
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 *
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 *  COPYRIGHT (c) 1989-1999.
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 *  On-Line Applications Research Corporation (OAR).
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  heap.inl,v 1.12 1999/11/17 17:50:38 joel Exp
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 */
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#ifndef __HEAP_inl
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#define __HEAP_inl
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#include
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/*PAGE
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 *
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 *  _Heap_Head
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 */
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#define _Heap_Head( _the_heap ) \
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  ((Heap_Block *)&(_the_heap)->start)
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/*PAGE
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 *
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 *  _Heap_Tail
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 */
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#define _Heap_Tail( _the_heap ) \
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  ((Heap_Block *)&(_the_heap)->final)
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/*PAGE
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 *
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 *  _Heap_Previous_block
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 */
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#define _Heap_Previous_block( _the_block ) \
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  ( (Heap_Block *) _Addresses_Subtract_offset( \
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      (void *)(_the_block), \
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      (_the_block)->back_flag & ~ HEAP_BLOCK_USED \
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    ) \
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  )
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/*PAGE
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 *
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 *  _Heap_Next_block
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 */
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#define _Heap_Next_block( _the_block ) \
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  ( (Heap_Block *) _Addresses_Add_offset( \
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      (void *)(_the_block), \
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      (_the_block)->front_flag & ~ HEAP_BLOCK_USED \
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    ) \
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  )
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/*PAGE
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 *
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 *  _Heap_Block_at
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 */
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#define _Heap_Block_at( _base, _offset ) \
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  ( (Heap_Block *) \
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     _Addresses_Add_offset( (void *)(_base), (_offset) ) )
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/*PAGE
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 *
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 *  _Heap_User_block_at
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 *
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 */
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#define _Heap_User_block_at( _base ) \
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  _Heap_Block_at( \
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    (_base), \
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    -*(((unsigned32 *) (_base)) - 1) + -HEAP_BLOCK_USED_OVERHEAD \
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  )
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/*PAGE
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 *
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 *  _Heap_Is_previous_block_free
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 */
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#define _Heap_Is_previous_block_free( _the_block ) \
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  ( !((_the_block)->back_flag & HEAP_BLOCK_USED) )
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/*PAGE
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 *
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 *  _Heap_Is_block_free
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 */
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#define _Heap_Is_block_free( _the_block ) \
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  ( !((_the_block)->front_flag & HEAP_BLOCK_USED) )
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/*PAGE
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 *
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 *  _Heap_Is_block_used
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 */
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#define _Heap_Is_block_used( _the_block ) \
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  ((_the_block)->front_flag & HEAP_BLOCK_USED)
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/*PAGE
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 *
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 *  _Heap_Block_size
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 */
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#define _Heap_Block_size( _the_block )    \
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  ((_the_block)->front_flag & ~HEAP_BLOCK_USED)
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/*PAGE
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 *
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 *  _Heap_Start_of_user_area
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 */
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#define _Heap_Start_of_user_area( _the_block ) \
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  ((void *) &(_the_block)->next)
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/*PAGE
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 *
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 *  _Heap_Is_block_in
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 */
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#define _Heap_Is_block_in( _the_heap, _the_block ) \
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  ( ((_the_block) >= (_the_heap)->start) && \
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    ((_the_block) <= (_the_heap)->final) )
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/*PAGE
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 *
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 *  _Heap_Is_page_size_valid
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 */
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#define _Heap_Is_page_size_valid( _page_size ) \
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  ( ((_page_size) != 0) && \
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    (((_page_size) % CPU_HEAP_ALIGNMENT) == 0) )
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/*PAGE
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 *
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 *  _Heap_Build_flag
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 */
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#define _Heap_Build_flag( _size, _in_use_flag ) \
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  ( (_size) | (_in_use_flag))
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#endif
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/* end of include file */

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