63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/*
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* Copyright 2016 Jakub Klama <jceel@FreeBSD.org>
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* All rights reserved
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted providing that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef LIB9P_HASHTABLE_H
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#define LIB9P_HASHTABLE_H
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#include <sys/queue.h>
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struct ht {
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struct ht_entry * ht_entries;
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size_t ht_nentries;
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};
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struct ht_entry {
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TAILQ_HEAD(, ht_item) hte_items;
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};
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struct ht_item {
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uint32_t hti_hash;
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void * hti_data;
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TAILQ_ENTRY(ht_item) hti_link;
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};
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struct ht_iter {
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struct ht * htit_parent;
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struct ht_item * htit_cursor;
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size_t htit_slot;
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};
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void ht_init(struct ht *h, size_t size);
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void ht_destroy(struct ht *h);
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void *ht_find(struct ht *h, uint32_t hash);
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int ht_add(struct ht *h, uint32_t hash, void *value);
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int ht_remove(struct ht *h, uint32_t hash);
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int ht_remove_at_iter(struct ht_iter *iter);
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void ht_iter(struct ht *h, struct ht_iter *iter);
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void *ht_next(struct ht_iter *iter);
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#endif /* LIB9P_HASHTABLE_H */
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