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diff --git a/source/blender/blenlib/BLI_gsqueue.h b/source/blender/blenlib/BLI_gsqueue.h
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+/*
+ * A generic structure queue (a queue for fixed length
+ * (generally small) structures.
+ * 
+ * $Id$
+ *
+ * ***** BEGIN GPL/BL DUAL 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. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ */
+
+#ifndef BLI_GSQUEUE_H
+#define BLI_GSQUEUE_H
+
+typedef struct _GSQueue GSQueue;
+
+	/**
+	 * Create a new GSQueue.
+	 * 
+	 * @param elem_size The size of the structures in the queue.
+	 * @retval The new queue
+	 */
+GSQueue*	BLI_gsqueue_new		(int elem_size);
+
+	/**
+	 * Query if the queue is empty
+	 */
+int			BLI_gsqueue_is_empty(GSQueue *gq);
+
+	/**
+	 * Access the item at the head of the queue
+	 * without removing it.
+	 * 
+	 * @param item_r A pointer to an appropriatly
+	 * sized structure (the size passed to BLI_gsqueue_new)
+	 */
+void		BLI_gsqueue_peek	(GSQueue *gq, void *item_r);
+
+	/**
+	 * Access the item at the head of the queue
+	 * and remove it.
+	 * 
+	 * @param item_r A pointer to an appropriatly
+	 * sized structure (the size passed to BLI_gsqueue_new).
+	 * Can be NULL if desired.
+	 */
+void		BLI_gsqueue_pop		(GSQueue *gq, void *item_r);
+
+	/**
+	 * Push an element onto the tail of the queue.
+	 * 
+	 * @param item A pointer to an appropriatly
+	 * sized structure (the size passed to BLI_gsqueue_new).
+	 */
+void		BLI_gsqueue_push	(GSQueue *gq, void *item);
+
+	/**
+	 * Push an element back onto the head of the queue (so
+	 * it would be returned from the next call to BLI_gsqueue_pop).
+	 * 
+	 * @param item A pointer to an appropriatly
+	 * sized structure (the size passed to BLI_gsqueue_new).
+	 */
+void		BLI_qsueue_pushback	(GSQueue *gq, void *item);
+
+	/**
+	 * Free the queue
+	 */
+void		BLI_gsqueue_free	(GSQueue *gq);
+
+#endif /* BLI_GSQUEUE_H */