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/* $OpenBSD: hash.h,v 1.1 2008/06/21 15:39:15 joris Exp $ */
/*
* Copyright (c) 2008 Joris Vink <joris@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This is based upon:
* src/lib/libc/stdlib/hcreate.c
*/
#ifndef _H_HASH
#define _H_HASH
struct hash_data {
char *h_key;
void *h_data;
};
struct hash_table_entry {
SLIST_ENTRY(hash_table_entry) h_list;
struct hash_data h_data;
};
SLIST_HEAD(hash_head, hash_table_entry);
struct hash_table {
struct hash_head *h_table;
size_t h_size;
};
#define MIN_HASH_SIZE (1 << 4)
#define MAX_HASH_SIZE ((size_t)1 << (sizeof(size_t) * 8 - 1 - 5))
void hash_table_init(struct hash_table *, size_t);
void hash_table_enter(struct hash_table *, struct hash_data *);
struct hash_data *hash_table_find(struct hash_table *, const char *, size_t);
u_int32_t hash4(const char *, size_t);
extern struct hash_table created_directories;
extern struct hash_table created_cvs_directories;
#endif
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