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1 /* Priority queue functions.
2 * Copyright (C) 2003 Yasuhiro Ohara
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published
8 * by the Free Software Foundation; either version 2, or (at your
9 * option) any later version.
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef _ZEBRA_PQUEUE_H
22 #define _ZEBRA_PQUEUE_H
30 int (*cmp
) (void *, void *);
31 void (*update
) (void * node
, int actual_position
);
34 #define PQUEUE_INIT_ARRAYSIZE 32
36 extern struct pqueue
*pqueue_create (void);
37 extern void pqueue_delete (struct pqueue
*queue
);
39 extern void pqueue_enqueue (void *data
, struct pqueue
*queue
);
40 extern void *pqueue_dequeue (struct pqueue
*queue
);
41 extern void pqueue_remove_at (int index
, struct pqueue
*queue
);
42 extern void pqueue_remove (void *data
, struct pqueue
*queue
);
44 extern void trickle_down (int index
, struct pqueue
*queue
);
45 extern void trickle_up (int index
, struct pqueue
*queue
);
47 #endif /* _ZEBRA_PQUEUE_H */