src/gallium/auxiliary/cso_cache/cso_hash.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS 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  /*
  29   * Authors:
  30   *   Zack Rusin <zack@tungstengraphics.com>
  31   */
  32
  33 #ifndef CSO_HASH_H
  34 #define CSO_HASH_H
  35
  36
  37 #ifdef  __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 struct cso_hash;
  42 struct cso_node;
  43
  44 struct cso_hash_iter {
  45    struct cso_hash *hash;
  46    struct cso_node  *node;
  47 };
  48
  49 struct cso_hash *cso_hash_create(void);
  50 void             cso_hash_delete(struct cso_hash *hash);
  51
  52 int              cso_hash_size(struct cso_hash *hash);
  53
  54 struct cso_hash_iter cso_hash_insert(struct cso_hash *hash, unsigned key,
  55                                      void *data);
  56 void  *cso_hash_take(struct cso_hash *hash, unsigned key);
  57
  58 struct cso_hash_iter cso_hash_first_node(struct cso_hash *hash);
  59 struct cso_hash_iter cso_hash_find(struct cso_hash *hash, unsigned key);
  60
  61
  62 int       cso_hash_iter_is_null(struct cso_hash_iter iter);
  63 unsigned  cso_hash_iter_key(struct cso_hash_iter iter);
  64 void     *cso_hash_iter_data(struct cso_hash_iter iter);
  65
  66 struct cso_hash_iter cso_hash_iter_next(struct cso_hash_iter iter);
  67 struct cso_hash_iter cso_hash_iter_prev(struct cso_hash_iter iter);
  68
  69
  70 /* KW: a convenience routine:
  71  */
  72 void *cso_hash_find_data_from_template( struct cso_hash *hash,
  73                                         unsigned hash_key,
  74                                         void *templ,
  75                                         int size );
  76
  77
  78 #ifdef  __cplusplus
  79 }
  80 #endif
  81
  82 #endif