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/* Copyright (C) 1997 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: gxpcache.h,v 1.5 2002/06/16 08:45:43 lpd Exp $ */
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/* Definition of Pattern cache */
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#ifndef gxpcache_INCLUDED
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# define gxpcache_INCLUDED
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/*
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* Define a cache for rendered Patterns. This is currently an open
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* hash table with single probing (no reprobing) and round-robin
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* replacement. Obviously, we can do better in both areas.
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*/
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#ifndef gx_pattern_cache_DEFINED
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# define gx_pattern_cache_DEFINED
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typedef struct gx_pattern_cache_s gx_pattern_cache;
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#endif
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#ifndef gx_color_tile_DEFINED
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# define gx_color_tile_DEFINED
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typedef struct gx_color_tile_s gx_color_tile;
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#endif
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struct gx_pattern_cache_s {
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gs_memory_t *memory;
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gx_color_tile *tiles;
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uint num_tiles;
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uint tiles_used;
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uint next; /* round-robin index */
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ulong bits_used;
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ulong max_bits;
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void (*free_all) (gx_pattern_cache *);
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};
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#define private_st_pattern_cache() /* in gxpcmap.c */\
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gs_private_st_ptrs1(st_pattern_cache, gx_pattern_cache,\
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"gx_pattern_cache", pattern_cache_enum, pattern_cache_reloc, tiles)
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#endif /* gxpcache_INCLUDED */
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