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896014f4bc
The FSF's address changed, and we had a mixture of comment styles for the GPL file header. (The style with * at the beginning won out with 580 to 141 in existing files.) Note: I've intentionally left intact other "variations" of the copyright header, e.g. whether it says "Zebra", "Quagga", "FRR", or nothing. Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/* Priority queue functions.
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* Copyright (C) 2003 Yasuhiro Ohara
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*
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* This file is part of GNU Zebra.
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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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 pqueue_remove (void *data, 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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