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- /* Priority queue functions.
- Copyright (C) 2003 Yasuhiro Ohara
- This file is part of GNU Zebra.
- GNU Zebra 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, or (at your
- option) any later version.
- GNU Zebra 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 GNU Zebra; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
- #ifndef _ZEBRA_PQUEUE_H
- #define _ZEBRA_PQUEUE_H
- struct pqueue
- {
- void **array;
- int array_size;
- int size;
- int (*cmp) (void *, void *);
- void (*update) (void * node, int actual_position);
- };
- #define PQUEUE_INIT_ARRAYSIZE 32
- extern struct pqueue *pqueue_create (void);
- extern void pqueue_delete (struct pqueue *queue);
- extern void pqueue_enqueue (void *data, struct pqueue *queue);
- extern void *pqueue_dequeue (struct pqueue *queue);
- extern void pqueue_remove_at (int index, struct pqueue *queue);
- extern void trickle_down (int index, struct pqueue *queue);
- extern void trickle_up (int index, struct pqueue *queue);
- #endif /* _ZEBRA_PQUEUE_H */
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