4 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version. The Blender
10 * Foundation also sells licenses for use in proprietary software under
11 * the Blender License. See http://www.blender.org/BL/ for information
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
24 * All rights reserved.
26 * The Original Code is: all of this file.
28 * Contributor(s): none yet.
30 * ***** END GPL/BL DUAL LICENSE BLOCK *****
34 #include "MEM_guardedalloc.h"
35 #include "BLI_gsqueue.h"
41 typedef struct _GSQueueElem GSQueueElem;
52 GSQueue *BLI_gsqueue_new(int elem_size)
54 GSQueue *gq= MEM_mallocN(sizeof(*gq), "gqueue_new");
55 gq->head= gq->tail= NULL;
56 gq->elem_size= elem_size;
61 int BLI_gsqueue_is_empty(GSQueue *gq)
63 return (gq->head==NULL);
66 void BLI_gsqueue_peek(GSQueue *gq, void *item_r)
68 memcpy(item_r, &gq->head[1], gq->elem_size);
70 void BLI_gsqueue_pop(GSQueue *gq, void *item_r)
72 GSQueueElem *elem= gq->head;
74 gq->head= gq->tail= NULL;
76 gq->head= gq->head->next;
79 if (item_r) memcpy(item_r, &elem[1], gq->elem_size);
82 void BLI_gsqueue_push(GSQueue *gq, void *item)
84 GSQueueElem *elem= MEM_mallocN(sizeof(*elem)+gq->elem_size, "gqueue_push");
85 memcpy(&elem[1], item, gq->elem_size);
88 if (BLI_gsqueue_is_empty(gq)) {
89 gq->tail= gq->head= elem;
91 gq->tail= gq->tail->next= elem;
94 void BLI_gsqueue_pushback(GSQueue *gq, void *item)
96 GSQueueElem *elem= MEM_mallocN(sizeof(*elem)+gq->elem_size, "gqueue_push");
97 memcpy(&elem[1], item, gq->elem_size);
100 if (BLI_gsqueue_is_empty(gq)) {
101 gq->head= gq->tail= elem;
107 void BLI_gsqueue_free(GSQueue *gq)
110 BLI_gsqueue_pop(gq, NULL);