diff options
Diffstat (limited to 'mesalib/src/mesa/program/prog_cache.c')
-rw-r--r-- | mesalib/src/mesa/program/prog_cache.c | 502 |
1 files changed, 251 insertions, 251 deletions
diff --git a/mesalib/src/mesa/program/prog_cache.c b/mesalib/src/mesa/program/prog_cache.c index 398cd5e6d..2ccedb5d7 100644 --- a/mesalib/src/mesa/program/prog_cache.c +++ b/mesalib/src/mesa/program/prog_cache.c @@ -1,251 +1,251 @@ -/**************************************************************************
- *
- * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-
-
-#include "main/glheader.h"
-#include "main/mtypes.h"
-#include "main/imports.h"
-#include "main/shaderobj.h"
-#include "program/prog_cache.h"
-#include "program/program.h"
-
-
-struct cache_item
-{
- GLuint hash;
- void *key;
- struct gl_program *program;
- struct cache_item *next;
-};
-
-struct gl_program_cache
-{
- struct cache_item **items;
- struct cache_item *last;
- GLuint size, n_items;
-};
-
-
-
-/**
- * Compute hash index from state key.
- */
-static GLuint
-hash_key(const void *key, GLuint key_size)
-{
- const GLuint *ikey = (const GLuint *) key;
- GLuint hash = 0, i;
-
- assert(key_size >= 4);
-
- /* Make a slightly better attempt at a hash function:
- */
- for (i = 0; i < key_size / sizeof(*ikey); i++)
- {
- hash += ikey[i];
- hash += (hash << 10);
- hash ^= (hash >> 6);
- }
-
- return hash;
-}
-
-
-/**
- * Rebuild/expand the hash table to accomodate more entries
- */
-static void
-rehash(struct gl_program_cache *cache)
-{
- struct cache_item **items;
- struct cache_item *c, *next;
- GLuint size, i;
-
- cache->last = NULL;
-
- size = cache->size * 3;
- items = (struct cache_item**) malloc(size * sizeof(*items));
- memset(items, 0, size * sizeof(*items));
-
- for (i = 0; i < cache->size; i++)
- for (c = cache->items[i]; c; c = next) {
- next = c->next;
- c->next = items[c->hash % size];
- items[c->hash % size] = c;
- }
-
- free(cache->items);
- cache->items = items;
- cache->size = size;
-}
-
-
-static void
-clear_cache(struct gl_context *ctx, struct gl_program_cache *cache,
- GLboolean shader)
-{
- struct cache_item *c, *next;
- GLuint i;
-
- cache->last = NULL;
-
- for (i = 0; i < cache->size; i++) {
- for (c = cache->items[i]; c; c = next) {
- next = c->next;
- free(c->key);
- if (shader) {
- _mesa_reference_shader_program(ctx,
- (struct gl_shader_program **)&c->program,
- NULL);
- } else {
- _mesa_reference_program(ctx, &c->program, NULL);
- }
- free(c);
- }
- cache->items[i] = NULL;
- }
-
-
- cache->n_items = 0;
-}
-
-
-
-struct gl_program_cache *
-_mesa_new_program_cache(void)
-{
- struct gl_program_cache *cache = CALLOC_STRUCT(gl_program_cache);
- if (cache) {
- cache->size = 17;
- cache->items = (struct cache_item **)
- calloc(1, cache->size * sizeof(struct cache_item));
- if (!cache->items) {
- free(cache);
- return NULL;
- }
- }
- return cache;
-}
-
-
-void
-_mesa_delete_program_cache(struct gl_context *ctx, struct gl_program_cache *cache)
-{
- clear_cache(ctx, cache, GL_FALSE);
- free(cache->items);
- free(cache);
-}
-
-void
-_mesa_delete_shader_cache(struct gl_context *ctx,
- struct gl_program_cache *cache)
-{
- clear_cache(ctx, cache, GL_TRUE);
- free(cache->items);
- free(cache);
-}
-
-
-struct gl_program *
-_mesa_search_program_cache(struct gl_program_cache *cache,
- const void *key, GLuint keysize)
-{
- if (cache->last &&
- memcmp(cache->last->key, key, keysize) == 0) {
- return cache->last->program;
- }
- else {
- const GLuint hash = hash_key(key, keysize);
- struct cache_item *c;
-
- for (c = cache->items[hash % cache->size]; c; c = c->next) {
- if (c->hash == hash && memcmp(c->key, key, keysize) == 0) {
- cache->last = c;
- return c->program;
- }
- }
-
- return NULL;
- }
-}
-
-
-void
-_mesa_program_cache_insert(struct gl_context *ctx,
- struct gl_program_cache *cache,
- const void *key, GLuint keysize,
- struct gl_program *program)
-{
- const GLuint hash = hash_key(key, keysize);
- struct cache_item *c = CALLOC_STRUCT(cache_item);
-
- c->hash = hash;
-
- c->key = malloc(keysize);
- memcpy(c->key, key, keysize);
-
- c->program = program; /* no refcount change */
-
- if (cache->n_items > cache->size * 1.5) {
- if (cache->size < 1000)
- rehash(cache);
- else
- clear_cache(ctx, cache, GL_FALSE);
- }
-
- cache->n_items++;
- c->next = cache->items[hash % cache->size];
- cache->items[hash % cache->size] = c;
-}
-
-void
-_mesa_shader_cache_insert(struct gl_context *ctx,
- struct gl_program_cache *cache,
- const void *key, GLuint keysize,
- struct gl_shader_program *program)
-{
- const GLuint hash = hash_key(key, keysize);
- struct cache_item *c = CALLOC_STRUCT(cache_item);
-
- c->hash = hash;
-
- c->key = malloc(keysize);
- memcpy(c->key, key, keysize);
-
- c->program = (struct gl_program *)program; /* no refcount change */
-
- if (cache->n_items > cache->size * 1.5) {
- if (cache->size < 1000)
- rehash(cache);
- else
- clear_cache(ctx, cache, GL_TRUE);
- }
-
- cache->n_items++;
- c->next = cache->items[hash % cache->size];
- cache->items[hash % cache->size] = c;
-}
+/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + + +#include "main/glheader.h" +#include "main/mtypes.h" +#include "main/imports.h" +#include "main/shaderobj.h" +#include "program/prog_cache.h" +#include "program/program.h" + + +struct cache_item +{ + GLuint hash; + void *key; + struct gl_program *program; + struct cache_item *next; +}; + +struct gl_program_cache +{ + struct cache_item **items; + struct cache_item *last; + GLuint size, n_items; +}; + + + +/** + * Compute hash index from state key. + */ +static GLuint +hash_key(const void *key, GLuint key_size) +{ + const GLuint *ikey = (const GLuint *) key; + GLuint hash = 0, i; + + assert(key_size >= 4); + + /* Make a slightly better attempt at a hash function: + */ + for (i = 0; i < key_size / sizeof(*ikey); i++) + { + hash += ikey[i]; + hash += (hash << 10); + hash ^= (hash >> 6); + } + + return hash; +} + + +/** + * Rebuild/expand the hash table to accomodate more entries + */ +static void +rehash(struct gl_program_cache *cache) +{ + struct cache_item **items; + struct cache_item *c, *next; + GLuint size, i; + + cache->last = NULL; + + size = cache->size * 3; + items = (struct cache_item**) malloc(size * sizeof(*items)); + memset(items, 0, size * sizeof(*items)); + + for (i = 0; i < cache->size; i++) + for (c = cache->items[i]; c; c = next) { + next = c->next; + c->next = items[c->hash % size]; + items[c->hash % size] = c; + } + + free(cache->items); + cache->items = items; + cache->size = size; +} + + +static void +clear_cache(struct gl_context *ctx, struct gl_program_cache *cache, + GLboolean shader) +{ + struct cache_item *c, *next; + GLuint i; + + cache->last = NULL; + + for (i = 0; i < cache->size; i++) { + for (c = cache->items[i]; c; c = next) { + next = c->next; + free(c->key); + if (shader) { + _mesa_reference_shader_program(ctx, + (struct gl_shader_program **)&c->program, + NULL); + } else { + _mesa_reference_program(ctx, &c->program, NULL); + } + free(c); + } + cache->items[i] = NULL; + } + + + cache->n_items = 0; +} + + + +struct gl_program_cache * +_mesa_new_program_cache(void) +{ + struct gl_program_cache *cache = CALLOC_STRUCT(gl_program_cache); + if (cache) { + cache->size = 17; + cache->items = (struct cache_item **) + calloc(1, cache->size * sizeof(struct cache_item)); + if (!cache->items) { + free(cache); + return NULL; + } + } + return cache; +} + + +void +_mesa_delete_program_cache(struct gl_context *ctx, struct gl_program_cache *cache) +{ + clear_cache(ctx, cache, GL_FALSE); + free(cache->items); + free(cache); +} + +void +_mesa_delete_shader_cache(struct gl_context *ctx, + struct gl_program_cache *cache) +{ + clear_cache(ctx, cache, GL_TRUE); + free(cache->items); + free(cache); +} + + +struct gl_program * +_mesa_search_program_cache(struct gl_program_cache *cache, + const void *key, GLuint keysize) +{ + if (cache->last && + memcmp(cache->last->key, key, keysize) == 0) { + return cache->last->program; + } + else { + const GLuint hash = hash_key(key, keysize); + struct cache_item *c; + + for (c = cache->items[hash % cache->size]; c; c = c->next) { + if (c->hash == hash && memcmp(c->key, key, keysize) == 0) { + cache->last = c; + return c->program; + } + } + + return NULL; + } +} + + +void +_mesa_program_cache_insert(struct gl_context *ctx, + struct gl_program_cache *cache, + const void *key, GLuint keysize, + struct gl_program *program) +{ + const GLuint hash = hash_key(key, keysize); + struct cache_item *c = CALLOC_STRUCT(cache_item); + + c->hash = hash; + + c->key = malloc(keysize); + memcpy(c->key, key, keysize); + + c->program = program; /* no refcount change */ + + if (cache->n_items > cache->size * 1.5) { + if (cache->size < 1000) + rehash(cache); + else + clear_cache(ctx, cache, GL_FALSE); + } + + cache->n_items++; + c->next = cache->items[hash % cache->size]; + cache->items[hash % cache->size] = c; +} + +void +_mesa_shader_cache_insert(struct gl_context *ctx, + struct gl_program_cache *cache, + const void *key, GLuint keysize, + struct gl_shader_program *program) +{ + const GLuint hash = hash_key(key, keysize); + struct cache_item *c = CALLOC_STRUCT(cache_item); + + c->hash = hash; + + c->key = malloc(keysize); + memcpy(c->key, key, keysize); + + c->program = (struct gl_program *)program; /* no refcount change */ + + if (cache->n_items > cache->size * 1.5) { + if (cache->size < 1000) + rehash(cache); + else + clear_cache(ctx, cache, GL_TRUE); + } + + cache->n_items++; + c->next = cache->items[hash % cache->size]; + cache->items[hash % cache->size] = c; +} |