1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 /* Authors: Zack Rusin <zackr@vmware.com>
29 */
30
31 #include "util/u_debug.h"
32
33 #include "util/u_memory.h"
34
35 #include "cso_cache.h"
36 #include "cso_hash.h"
37
38
_cso_hash_for_type(struct cso_cache * sc,enum cso_cache_type type)39 static inline struct cso_hash *_cso_hash_for_type(struct cso_cache *sc, enum cso_cache_type type)
40 {
41 return &sc->hashes[type];
42 }
43
44 /* Default delete callback. It can also be used by custom callbacks. */
cso_delete_state(struct pipe_context * pipe,void * state,enum cso_cache_type type)45 void cso_delete_state(struct pipe_context *pipe, void *state,
46 enum cso_cache_type type)
47 {
48 switch (type) {
49 case CSO_BLEND:
50 pipe->delete_blend_state(pipe, ((struct cso_blend*)state)->data);
51 break;
52 case CSO_SAMPLER:
53 pipe->delete_sampler_state(pipe, ((struct cso_sampler*)state)->data);
54 break;
55 case CSO_DEPTH_STENCIL_ALPHA:
56 pipe->delete_depth_stencil_alpha_state(pipe,
57 ((struct cso_depth_stencil_alpha*)state)->data);
58 break;
59 case CSO_RASTERIZER:
60 pipe->delete_rasterizer_state(pipe, ((struct cso_rasterizer*)state)->data);
61 break;
62 case CSO_VELEMENTS:
63 pipe->delete_vertex_elements_state(pipe, ((struct cso_velements*)state)->data);
64 break;
65 default:
66 assert(0);
67 }
68
69 FREE(state);
70 }
71
72
sanitize_hash(struct cso_cache * sc,struct cso_hash * hash,enum cso_cache_type type,int max_size)73 static inline void sanitize_hash(struct cso_cache *sc,
74 struct cso_hash *hash,
75 enum cso_cache_type type,
76 int max_size)
77 {
78 if (sc->sanitize_cb)
79 sc->sanitize_cb(hash, type, max_size, sc->sanitize_data);
80 }
81
82
sanitize_cb(struct cso_hash * hash,enum cso_cache_type type,int max_size,void * user_data)83 static inline void sanitize_cb(struct cso_hash *hash, enum cso_cache_type type,
84 int max_size, void *user_data)
85 {
86 struct cso_cache *cache = (struct cso_cache *)user_data;
87
88 /* if we're approach the maximum size, remove fourth of the entries
89 * otherwise every subsequent call will go through the same */
90 int hash_size = cso_hash_size(hash);
91 int max_entries = (max_size > hash_size) ? max_size : hash_size;
92 int to_remove = (max_size < max_entries) * max_entries/4;
93 if (hash_size > max_size)
94 to_remove += hash_size - max_size;
95 while (to_remove) {
96 /*remove elements until we're good */
97 /*fixme: currently we pick the nodes to remove at random*/
98 struct cso_hash_iter iter = cso_hash_first_node(hash);
99 void *cso = cso_hash_take(hash, cso_hash_iter_key(iter));
100 cache->delete_cso(cache->delete_cso_ctx, cso, type);
101 --to_remove;
102 }
103 }
104
105 struct cso_hash_iter
cso_insert_state(struct cso_cache * sc,unsigned hash_key,enum cso_cache_type type,void * state)106 cso_insert_state(struct cso_cache *sc,
107 unsigned hash_key, enum cso_cache_type type,
108 void *state)
109 {
110 struct cso_hash *hash = _cso_hash_for_type(sc, type);
111 sanitize_hash(sc, hash, type, sc->max_size);
112
113 return cso_hash_insert(hash, hash_key, state);
114 }
115
116 struct cso_hash_iter
cso_find_state(struct cso_cache * sc,unsigned hash_key,enum cso_cache_type type)117 cso_find_state(struct cso_cache *sc,
118 unsigned hash_key, enum cso_cache_type type)
119 {
120 struct cso_hash *hash = _cso_hash_for_type(sc, type);
121
122 return cso_hash_find(hash, hash_key);
123 }
124
125
cso_hash_find_data_from_template(struct cso_hash * hash,unsigned hash_key,void * templ,int size)126 void *cso_hash_find_data_from_template( struct cso_hash *hash,
127 unsigned hash_key,
128 void *templ,
129 int size )
130 {
131 struct cso_hash_iter iter = cso_hash_find(hash, hash_key);
132 while (!cso_hash_iter_is_null(iter)) {
133 void *iter_data = cso_hash_iter_data(iter);
134 if (!memcmp(iter_data, templ, size)) {
135 /* We found a match
136 */
137 return iter_data;
138 }
139 iter = cso_hash_iter_next(iter);
140 }
141 return NULL;
142 }
143
144
cso_find_state_template(struct cso_cache * sc,unsigned hash_key,enum cso_cache_type type,void * templ,unsigned size)145 struct cso_hash_iter cso_find_state_template(struct cso_cache *sc,
146 unsigned hash_key, enum cso_cache_type type,
147 void *templ, unsigned size)
148 {
149 struct cso_hash_iter iter = cso_find_state(sc, hash_key, type);
150 while (!cso_hash_iter_is_null(iter)) {
151 void *iter_data = cso_hash_iter_data(iter);
152 if (!memcmp(iter_data, templ, size))
153 return iter;
154 iter = cso_hash_iter_next(iter);
155 }
156 return iter;
157 }
158
cso_cache_init(struct cso_cache * sc,struct pipe_context * pipe)159 void cso_cache_init(struct cso_cache *sc, struct pipe_context *pipe)
160 {
161 memset(sc, 0, sizeof(*sc));
162
163 sc->max_size = 4096;
164 for (int i = 0; i < CSO_CACHE_MAX; i++)
165 cso_hash_init(&sc->hashes[i]);
166
167 sc->sanitize_cb = sanitize_cb;
168 sc->sanitize_data = sc;
169 sc->delete_cso = (cso_delete_cso_callback)cso_delete_state;
170 sc->delete_cso_ctx = pipe;
171 }
172
cso_delete_all(struct cso_cache * sc,enum cso_cache_type type)173 static void cso_delete_all(struct cso_cache *sc, enum cso_cache_type type)
174 {
175 struct cso_hash *hash = _cso_hash_for_type(sc, type);
176 struct cso_hash_iter iter;
177
178 iter = cso_hash_first_node(hash);
179 while (!cso_hash_iter_is_null(iter)) {
180 void *state = cso_hash_iter_data(iter);
181 iter = cso_hash_iter_next(iter);
182 if (state) {
183 sc->delete_cso(sc->delete_cso_ctx, state, type);
184 }
185 }
186 }
187
cso_cache_delete(struct cso_cache * sc)188 void cso_cache_delete(struct cso_cache *sc)
189 {
190 int i;
191
192 /* delete driver data */
193 cso_delete_all(sc, CSO_BLEND);
194 cso_delete_all(sc, CSO_DEPTH_STENCIL_ALPHA);
195 cso_delete_all(sc, CSO_RASTERIZER);
196 cso_delete_all(sc, CSO_SAMPLER);
197 cso_delete_all(sc, CSO_VELEMENTS);
198
199 for (i = 0; i < CSO_CACHE_MAX; i++)
200 cso_hash_deinit(&sc->hashes[i]);
201 }
202
cso_set_maximum_cache_size(struct cso_cache * sc,int number)203 void cso_set_maximum_cache_size(struct cso_cache *sc, int number)
204 {
205 int i;
206
207 sc->max_size = number;
208
209 for (i = 0; i < CSO_CACHE_MAX; i++)
210 sanitize_hash(sc, &sc->hashes[i], i, sc->max_size);
211 }
212
cso_cache_set_sanitize_callback(struct cso_cache * sc,cso_sanitize_callback cb,void * user_data)213 void cso_cache_set_sanitize_callback(struct cso_cache *sc,
214 cso_sanitize_callback cb,
215 void *user_data)
216 {
217 sc->sanitize_cb = cb;
218 sc->sanitize_data = user_data;
219 }
220
cso_cache_set_delete_cso_callback(struct cso_cache * sc,cso_delete_cso_callback delete_cso,void * ctx)221 void cso_cache_set_delete_cso_callback(struct cso_cache *sc,
222 cso_delete_cso_callback delete_cso,
223 void *ctx)
224 {
225 sc->delete_cso = delete_cso;
226 sc->delete_cso_ctx = ctx;
227 }
228