1 /* Copyright (C) 2001-2019 Artifex Software, Inc. 2 All Rights Reserved. 3 4 This software is provided AS-IS with no warranty, either express or 5 implied. 6 7 This software is distributed under license and may not be copied, 8 modified or distributed except as expressly authorized under the terms 9 of the license contained in the file LICENSE in this distribution. 10 11 Refer to licensing information at http://www.artifex.com or contact 12 Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato, 13 CA 94945, U.S.A., +1(415)492-9861, for further information. 14 */ 15 16 17 /* Definition of Pattern cache */ 18 19 #ifndef gxpcache_INCLUDED 20 # define gxpcache_INCLUDED 21 22 #include "std.h" 23 #include "gsdcolor.h" 24 25 /* 26 * Define a cache for rendered Patterns. This is currently an open 27 * hash table with single probing (no reprobing) and round-robin 28 * replacement. Obviously, we can do better in both areas. 29 */ 30 typedef struct gx_pattern_cache_s gx_pattern_cache; 31 32 struct gx_pattern_cache_s { 33 gs_memory_t *memory; 34 gx_color_tile *tiles; 35 uint num_tiles; 36 uint tiles_used; 37 uint next; /* round-robin index */ 38 ulong bits_used; 39 ulong max_bits; 40 void (*free_all) (gx_pattern_cache *); 41 }; 42 43 #define private_st_pattern_cache() /* in gxpcmap.c */\ 44 gs_private_st_ptrs1(st_pattern_cache, gx_pattern_cache,\ 45 "gx_pattern_cache", pattern_cache_enum, pattern_cache_reloc, tiles) 46 47 #endif /* gxpcache_INCLUDED */ 48