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include/drm/drm_hashtab.h
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/************************************************************************** * * Copyright 2006 Tungsten Graphics, Inc., Bismack, ND. USA. * 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 * THE COPYRIGHT HOLDERS, AUTHORS 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. * * **************************************************************************/ /* * Simple open hash tab implementation. * * Authors: |
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* Thomas Hellström <thomas-at-tungstengraphics-dot-com> |
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*/ #ifndef DRM_HASHTAB_H #define DRM_HASHTAB_H |
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#define drm_hash_entry(_ptr, _type, _member) container_of(_ptr, _type, _member) |
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struct drm_hash_item { |
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struct hlist_node head; unsigned long key; |
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}; |
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struct drm_open_hash { |
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unsigned int size; unsigned int order; unsigned int fill; struct hlist_head *table; |
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int use_vmalloc; |
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}; |
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extern int drm_ht_create(struct drm_open_hash *ht, unsigned int order); extern int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item); extern int drm_ht_just_insert_please(struct drm_open_hash *ht, struct drm_hash_item *item, |
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unsigned long seed, int bits, int shift, unsigned long add); |
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extern int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, struct drm_hash_item **item); |
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extern void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key); extern int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key); extern int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item); extern void drm_ht_remove(struct drm_open_hash *ht); |
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#endif |