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/*
* ***** 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.
*
* The Original Code is Copyright (C) 2008 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Joseph Eagar.
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef BLI_SMALLHASH_H
#define BLI_SMALLHASH_H
/** \file BLI_smallhash.h
* \ingroup bli
*/
/* a light stack-friendly hash library,
* (it uses stack space for smallish hash tables) */
/* based on a doubling non-chaining approach */
typedef struct {
uintptr_t key;
void *val;
} SmallHashEntry;
/*how much stack space to use before dynamically allocating memory*/
#define SMSTACKSIZE 521
typedef struct SmallHash {
SmallHashEntry *table;
SmallHashEntry _stacktable[SMSTACKSIZE];
SmallHashEntry _copytable[SMSTACKSIZE];
SmallHashEntry *stacktable, *copytable;
int used;
int curhash;
int size;
} SmallHash;
typedef struct {
SmallHash *hash;
int i;
} SmallHashIter;
void BLI_smallhash_init(SmallHash *hash);
void BLI_smallhash_release(SmallHash *hash);
void BLI_smallhash_insert(SmallHash *hash, uintptr_t key, void *item);
void BLI_smallhash_remove(SmallHash *hash, uintptr_t key);
void * BLI_smallhash_lookup(SmallHash *hash, uintptr_t key);
int BLI_smallhash_haskey(SmallHash *hash, uintptr_t key);
int BLI_smallhash_count(SmallHash *hash);
void * BLI_smallhash_iternext(SmallHashIter *iter, uintptr_t *key);
void * BLI_smallhash_iternew(SmallHash *hash, SmallHashIter *iter, uintptr_t *key);
/* void BLI_smallhash_print(SmallHash *hash); */ /* UNUSED */
#endif // BLI_SMALLHASH_H
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