971788fdbe
The double result is never used with a triple keys, so we can pack the cache entry more tightly. * src/cache.h: Reorganize the cache entry the structure. * src/cache.c: Cleanup the code while we are at it. * src/bddop.c: Adjust to accesses to cache entries.
82 lines
2.9 KiB
C
82 lines
2.9 KiB
C
/*========================================================================
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Copyright (C) 1996-2002 by Jorn Lind-Nielsen
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All rights reserved
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Permission is hereby granted, without written agreement and without
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license or royalty fees, to use, reproduce, prepare derivative
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works, distribute, and display this software and its documentation
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for any purpose, provided that (1) the above copyright notice and
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the following two paragraphs appear in all copies of the source code
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and (2) redistributions, including without limitation binaries,
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reproduce these notices in the supporting documentation. Substantial
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modifications to this software may be copyrighted by their authors
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and need not follow the licensing terms described here, provided
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that the new terms are clearly indicated in all files where they apply.
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IN NO EVENT SHALL JORN LIND-NIELSEN, OR DISTRIBUTORS OF THIS
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SOFTWARE BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL,
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INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS
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SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE AUTHORS OR ANY OF THE
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ABOVE PARTIES HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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JORN LIND-NIELSEN SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING,
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BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE NO
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OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
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MODIFICATIONS.
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========================================================================*/
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/*************************************************************************
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$Header: /Volumes/CVS/repository/spot/spot/buddy/src/cache.c,v 1.2 2003/05/05 13:45:05 aduret Exp $
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FILE: cache.c
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DESCR: Cache class for caching apply/exist etc. results in BDD package
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AUTH: Jorn Lind
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DATE: (C) june 1997
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*************************************************************************/
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#include <stdlib.h>
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#include <string.h>
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#include "kernel.h"
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#include "cache.h"
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#include "prime.h"
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/*************************************************************************
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*************************************************************************/
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void BddCache_reset(BddCache *cache)
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{
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int n;
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for (n = 0; n < cache->tablesize; n++)
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cache->table[n].i.a = -1;
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}
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int BddCache_init(BddCache *cache, int size)
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{
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size = bdd_prime_gte(size);
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if ((cache->table=NEW(BddCacheData,size)) == NULL)
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return bdd_error(BDD_MEMORY);
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cache->tablesize = size;
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BddCache_reset(cache);
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return 0;
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}
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void BddCache_done(BddCache *cache)
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{
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free(cache->table);
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cache->table = NULL;
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cache->tablesize = 0;
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}
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int BddCache_resize(BddCache *cache, int newsize)
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{
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free(cache->table);
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return BddCache_init(cache, newsize);
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}
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/* EOF */
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