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37 lines
932 B
C
37 lines
932 B
C
/*
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* hashtab.h
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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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