1 /**************************************************************************
3 * Copyright 2006 Tungsten Graphics, Inc., Bismack, ND. USA.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
27 **************************************************************************/
29 * Simple open hash tab implementation.
32 * Thomas Hellström <thomas-at-tungstengraphics-dot-com>
38 #define drm_hash_entry(_ptr, _type, _member) list_entry(_ptr, _type, _member)
40 typedef struct drm_hash_item
{
41 struct hlist_node head
;
45 typedef struct drm_open_hash
{
49 struct hlist_head
*table
;
53 extern int drm_ht_create(drm_open_hash_t
*ht
, unsigned int order
);
54 extern int drm_ht_insert_item(drm_open_hash_t
*ht
, drm_hash_item_t
*item
);
55 extern int drm_ht_just_insert_please(drm_open_hash_t
*ht
, drm_hash_item_t
*item
,
56 unsigned long seed
, int bits
, int shift
,
58 extern int drm_ht_find_item(drm_open_hash_t
*ht
, unsigned long key
, drm_hash_item_t
**item
);
60 extern void drm_ht_verbose_list(drm_open_hash_t
*ht
, unsigned long key
);
61 extern int drm_ht_remove_key(drm_open_hash_t
*ht
, unsigned long key
);
62 extern int drm_ht_remove_item(drm_open_hash_t
*ht
, drm_hash_item_t
*item
);
63 extern void drm_ht_remove(drm_open_hash_t
*ht
);