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/*
* $Id$
*
* ***** 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) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: none of this file.
*
* Contributor(s): Daniel Dunbar, Joseph Eagar
*
* ***** END GPL LICENSE BLOCK *****
* A general (pointer -> pointer) hash table ADT
*/
#include <stdlib.h>
#include <string.h>
#include "MEM_guardedalloc.h"
#include "BLI_edgehash.h"
#include "BLI_mempool.h"
/***/
EdgeHash *BLI_edgehash_new(void) {
EdgeHash *eh= MEM_callocN(sizeof(*eh), "EdgeHash");
eh->cursize= 0;
eh->nentries= 0;
eh->nbuckets= _ehash_hashsizes[eh->cursize];
eh->buckets= MEM_callocN(eh->nbuckets*sizeof(*eh->buckets), "eh buckets 2");
eh->epool = BLI_mempool_create(sizeof(EdgeEntry), 512, 512, 1, 0);
return eh;
}
int BLI_edgehash_size(EdgeHash *eh) {
return eh->nentries;
}
void BLI_edgehash_clear(EdgeHash *eh, EdgeHashFreeFP valfreefp) {
int i;
for (i=0; i<eh->nbuckets; i++) {
EdgeEntry *e;
for (e= eh->buckets[i]; e; ) {
EdgeEntry *n= e->next;
if (valfreefp) valfreefp(e->val);
BLI_mempool_free(eh->epool, e);
e= n;
}
eh->buckets[i]= NULL;
}
eh->nentries= 0;
}
void BLI_edgehash_free(EdgeHash *eh, EdgeHashFreeFP valfreefp) {
BLI_edgehash_clear(eh, valfreefp);
BLI_mempool_destroy(eh->epool);
MEM_freeN(eh->buckets);
MEM_freeN(eh);
}
/***/
struct EdgeHashIterator {
EdgeHash *eh;
int curBucket;
EdgeEntry *curEntry;
};
EdgeHashIterator *BLI_edgehashIterator_new(EdgeHash *eh) {
EdgeHashIterator *ehi= MEM_mallocN(sizeof(*ehi), "eh iter");
ehi->eh= eh;
ehi->curEntry= NULL;
ehi->curBucket= -1;
while (!ehi->curEntry) {
ehi->curBucket++;
if (ehi->curBucket==ehi->eh->nbuckets)
break;
ehi->curEntry= ehi->eh->buckets[ehi->curBucket];
}
return ehi;
}
void BLI_edgehashIterator_free(EdgeHashIterator *ehi) {
MEM_freeN(ehi);
}
void BLI_edgehashIterator_getKey(EdgeHashIterator *ehi, int *v0_r, int *v1_r) {
if (ehi->curEntry) {
*v0_r = ehi->curEntry->v0;
*v1_r = ehi->curEntry->v1;
}
}
void *BLI_edgehashIterator_getValue(EdgeHashIterator *ehi) {
return ehi->curEntry?ehi->curEntry->val:NULL;
}
void BLI_edgehashIterator_setValue(EdgeHashIterator *ehi, void *val) {
if(ehi->curEntry)
ehi->curEntry->val= val;
}
void BLI_edgehashIterator_step(EdgeHashIterator *ehi) {
if (ehi->curEntry) {
ehi->curEntry= ehi->curEntry->next;
while (!ehi->curEntry) {
ehi->curBucket++;
if (ehi->curBucket==ehi->eh->nbuckets)
break;
ehi->curEntry= ehi->eh->buckets[ehi->curBucket];
}
}
}
int BLI_edgehashIterator_isDone(EdgeHashIterator *ehi) {
return !ehi->curEntry;
}
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