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/*
*
* This is free software. You can redistribute it and/or modify under
* the terms of the GNU General Public License version 2.
*
* Copyright (C) 1998 by kra
*
*/
#ifndef __HASH_H
#define __HASH_H
#ifdef _REENTRANT
#include <pthread.h>
#endif
#define HASH_MIN_ITEMS 131
#define HASH_MAX_PCT_FULL 80
#define HASH_SPACE_PCT_INC 100
#if 0
#define HASH_FUNC_2
#endif
typedef int (*hash_equal_func)(unsigned int key, void *data_ht, void *arg);
struct hash_table_item {
unsigned int ht_key;
void *ht_data;
};
struct hash {
int h_items;
int h_max_items;
int h_space_after;
struct hash_table_item *h_table;
hash_equal_func h_eqfunc;
#ifdef _REENTRANT
int h_locked;
pthread_t h_locked_thr;
pthread_mutex_t h_mutex;
#endif
};
struct hash_iterator {
struct hash *i_hash;
int i_pos;
};
int hash_init(struct hash *h, int max_items, hash_equal_func eqfunc);
void *hash_get(struct hash *h, unsigned int key, void *arg);
void *hash_remove(struct hash *h, unsigned int key, void *arg);
int hash_put(struct hash *h, unsigned int key, void *data);
int hash_put_check(struct hash *h, unsigned int key, void *data, void *arg);
void hash_lock(struct hash *h);
void hash_unlock(struct hash *h);
int hash_count(struct hash *h);
void hash_free(struct hash *h);
/*
* hash_iter
*/
void hash_iter_set(struct hash_iterator *i, struct hash *h);
void *hash_iter_get(struct hash_iterator *i, unsigned int *keyptr);
void hash_iter_end(struct hash_iterator *i);
void hash_iter_lock(struct hash_iterator *i);
void hash_iter_unlock(struct hash_iterator *i);
#endif
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