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blender-archive/source/blender/blenlib/BLI_edgehash.h
Campbell Barton 754b4ab3bc add hash function BLI_ghash_assign, BLI_edgehash_assign
avoids remove,insert and only hashes the key once.
2013-08-18 03:41:39 +00:00

64 lines
2.6 KiB
C++

/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contributor(s): Daniel Dunbar
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef __BLI_EDGEHASH_H__
#define __BLI_EDGEHASH_H__
/** \file BLI_edgehash.h
* \ingroup bli
* \author Daniel Dunbar
* \brief A general unordered 2-int pair hash table ADT.
*/
struct EdgeHash;
struct EdgeHashIterator;
typedef struct EdgeHash EdgeHash;
typedef struct EdgeHashIterator EdgeHashIterator;
typedef void (*EdgeHashFreeFP)(void *key);
enum {
EDGEHASH_FLAG_ALLOW_DUPES = (1 << 0), /* only checked for in debug mode */
};
EdgeHash *BLI_edgehash_new(void);
void BLI_edgehash_free(EdgeHash *eh, EdgeHashFreeFP valfreefp);
void BLI_edgehash_insert(EdgeHash *eh, unsigned int v0, unsigned int v1, void *val);
void BLI_edgehash_assign(EdgeHash *eh, unsigned int v0, unsigned int v1, void *val);
void *BLI_edgehash_lookup(EdgeHash *eh, unsigned int v0, unsigned int v1);
void **BLI_edgehash_lookup_p(EdgeHash *eh, unsigned int v0, unsigned int v1);
bool BLI_edgehash_haskey(EdgeHash *eh, unsigned int v0, unsigned int v1);
int BLI_edgehash_size(EdgeHash *eh);
void BLI_edgehash_clear(EdgeHash *eh, EdgeHashFreeFP valfreefp);
void BLI_edgehash_flag_set(EdgeHash *eh, unsigned short flag);
void BLI_edgehash_flag_clear(EdgeHash *eh, unsigned short flag);
EdgeHashIterator *BLI_edgehashIterator_new(EdgeHash *eh);
void BLI_edgehashIterator_free(EdgeHashIterator *ehi);
void BLI_edgehashIterator_getKey(EdgeHashIterator *ehi, unsigned int *v0_r, unsigned int *v1_r);
void *BLI_edgehashIterator_getValue(EdgeHashIterator *ehi);
void BLI_edgehashIterator_setValue(EdgeHashIterator *ehi, void *val);
void BLI_edgehashIterator_step(EdgeHashIterator *ehi);
bool BLI_edgehashIterator_isDone(EdgeHashIterator *ehi);
#endif