pqueue.h

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/* 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.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
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 * This product includes cryptographic software written by Eric Young
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 */

#ifndef HEADER_PQUEUE_H
#define HEADER_PQUEUE_H

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

typedef struct _pqueue *pqueue;

typedef struct _pitem
    {
    unsigned char priority[8]; /* 64-bit value in big-endian encoding */
    void *data;
    struct _pitem *next;
    } pitem;

typedef struct _pitem *piterator;

pitem *pitem_new(unsigned char *prio64be, 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, unsigned char *prio64be);
pitem *pqueue_iterator(pqueue pq);
pitem *pqueue_next(piterator *iter);

void   pqueue_print(pqueue pq);
int    pqueue_size(pqueue pq);

#endif /* ! HEADER_PQUEUE_H */