/* crypto/pqueue/pqueue.h */
/* 
 * DTLS implementation written by Nagendra Modadugu
 * ([email protected]) for the OpenSSL project 2005.  
 */
/* ====================================================================
 * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    [email protected].
 *
 * 5. Products derived from this software may not be called "OpenSSL"
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 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * ([email protected]).  This product includes software written by Tim
 * Hudson ([email protected]).
 *
 */

#ifndef HEADER_PQUEUE_H
#define HEADER_PQUEUE_H

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <openssl/pq_compat.h>

typedef struct _pqueue *pqueue;

typedef struct _pitem
	{
	PQ_64BIT priority;
	void *data;
	struct _pitem *next;
	} pitem;

typedef struct _pitem *piterator;

pitem *pitem_new(PQ_64BIT priority, void *data);
void   pitem_free(pitem *item);

pqueue pqueue_new(void);
void   pqueue_free(pqueue pq);

pitem *pqueue_insert(pqueue pq, pitem *item);
pitem *pqueue_peek(pqueue pq);
pitem *pqueue_pop(pqueue pq);
pitem *pqueue_find(pqueue pq, PQ_64BIT priority);
pitem *pqueue_iterator(pqueue pq);
pitem *pqueue_next(piterator *iter);

void   pqueue_print(pqueue pq);

#endif /* ! HEADER_PQUEUE_H */