1 /* Copyright (C) 1997 Aladdin Enterprises. All rights reserved. 2 3 This software is provided AS-IS with no warranty, either express or 4 implied. 5 6 This software is distributed under license and may not be copied, 7 modified or distributed except as expressly authorized under the terms 8 of the license contained in the file LICENSE in this distribution. 9 10 For more information about licensing, please refer to 11 http://www.ghostscript.com/licensing/. For information on 12 commercial licensing, go to http://www.artifex.com/licensing/ or 13 contact Artifex Software, Inc., 101 Lucas Valley Road #110, 14 San Rafael, CA 94903, U.S.A., +1(415)492-9861. 15 */ 16 17 /* $Id: gxpcache.h,v 1.5 2002/06/16 08:45:43 lpd Exp $ */ 18 /* Definition of Pattern cache */ 19 20 #ifndef gxpcache_INCLUDED 21 # define gxpcache_INCLUDED 22 23 /* 24 * Define a cache for rendered Patterns. This is currently an open 25 * hash table with single probing (no reprobing) and round-robin 26 * replacement. Obviously, we can do better in both areas. 27 */ 28 #ifndef gx_pattern_cache_DEFINED 29 # define gx_pattern_cache_DEFINED 30 typedef struct gx_pattern_cache_s gx_pattern_cache; 31 32 #endif 33 #ifndef gx_color_tile_DEFINED 34 # define gx_color_tile_DEFINED 35 typedef struct gx_color_tile_s gx_color_tile; 36 37 #endif 38 struct gx_pattern_cache_s { 39 gs_memory_t *memory; 40 gx_color_tile *tiles; 41 uint num_tiles; 42 uint tiles_used; 43 uint next; /* round-robin index */ 44 ulong bits_used; 45 ulong max_bits; 46 void (*free_all) (gx_pattern_cache *); 47 }; 48 49 #define private_st_pattern_cache() /* in gxpcmap.c */\ 50 gs_private_st_ptrs1(st_pattern_cache, gx_pattern_cache,\ 51 "gx_pattern_cache", pattern_cache_enum, pattern_cache_reloc, tiles) 52 53 #endif /* gxpcache_INCLUDED */ 54