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53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*
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* hashtab.h
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* Copyright (C) 2013-2015 Mikael Pettersson
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*
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* This file is part of pdp10-tools.
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*
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* pdp10-tools 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 by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* pdp10-tools is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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
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* along with pdp10-tools. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef HASHTAB_H
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#define HASHTAB_H
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#include <stdint.h> /* uintptr_t */
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struct hashnode {
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uintptr_t hashval;
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struct hashnode *next;
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};
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typedef int (*hashtab_eq_func_t)(const struct hashnode *hashnode, const void *data);
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struct hashtab {
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unsigned int log2size;
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unsigned int mask; /* INV: mask == (1 << log2size) - 1 */
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unsigned int used;
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hashtab_eq_func_t eq_func;
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struct hashnode **bucket;
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};
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int hashtab_init(struct hashtab *hashtab, unsigned int log2size, hashtab_eq_func_t eq_func);
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struct hashnode *hashtab_lookup(const struct hashtab *hashtab, uintptr_t hashval, const void *data);
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int hashtab_insert(struct hashtab *hashtab, struct hashnode *hashnode);
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struct hashnode *hashtab_reset(struct hashtab *hashtab);
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int hashtab_enumerate(const struct hashtab *hashtab,
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int (*func)(struct hashnode *hashnode, void *data),
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void *data);
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#endif /* HASHTAB_H */
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