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4becea724c
Signed-off-by: Christian Franke <chris@opensourcerouting.org> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* Priority queue functions.
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Copyright (C) 2003 Yasuhiro Ohara
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This file is part of GNU Zebra.
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GNU Zebra is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 2, or (at your
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option) any later version.
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GNU Zebra is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Zebra; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _ZEBRA_PQUEUE_H
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#define _ZEBRA_PQUEUE_H
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struct pqueue
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{
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void **array;
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int array_size;
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int size;
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int (*cmp) (void *, void *);
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void (*update) (void * node, int actual_position);
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};
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#define PQUEUE_INIT_ARRAYSIZE 32
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extern struct pqueue *pqueue_create (void);
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extern void pqueue_delete (struct pqueue *queue);
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extern void pqueue_enqueue (void *data, struct pqueue *queue);
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extern void *pqueue_dequeue (struct pqueue *queue);
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extern void pqueue_remove_at (int index, struct pqueue *queue);
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extern void trickle_down (int index, struct pqueue *queue);
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extern void trickle_up (int index, struct pqueue *queue);
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#endif /* _ZEBRA_PQUEUE_H */
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