1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1991, 1993, 1994
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32BUFHEAD	*__add_ovflpage(HTAB *, BUFHEAD *);
33int	 __addel(HTAB *, BUFHEAD *, const DBT *, const DBT *);
34int	 __big_delete(HTAB *, BUFHEAD *);
35int	 __big_insert(HTAB *, BUFHEAD *, const DBT *, const DBT *);
36int	 __big_keydata(HTAB *, BUFHEAD *, DBT *, DBT *, int);
37int	 __big_return(HTAB *, BUFHEAD *, int, DBT *, int);
38int	 __big_split(HTAB *, BUFHEAD *, BUFHEAD *, BUFHEAD *,
39		int, u_int32_t, SPLIT_RETURN *);
40int	 __buf_free(HTAB *, int, int);
41void	 __buf_init(HTAB *, int);
42u_int32_t	 __call_hash(HTAB *, char *, int);
43int	 __delpair(HTAB *, BUFHEAD *, int);
44int	 __expand_table(HTAB *);
45int	 __find_bigpair(HTAB *, BUFHEAD *, int, char *, int);
46u_int16_t	 __find_last_page(HTAB *, BUFHEAD **);
47void	 __free_ovflpage(HTAB *, BUFHEAD *);
48BUFHEAD	*__get_buf(HTAB *, u_int32_t, BUFHEAD *, int);
49int	 __get_page(HTAB *, char *, u_int32_t, int, int, int);
50int	 __ibitmap(HTAB *, int, int, int);
51u_int32_t	 __log2(u_int32_t);
52int	 __put_page(HTAB *, char *, u_int32_t, int, int);
53void	 __reclaim_buf(HTAB *, BUFHEAD *);
54int	 __split_page(HTAB *, u_int32_t, u_int32_t);
55
56/* Default hash routine. */
57extern u_int32_t (*__default_hash)(const void *, size_t);
58
59#ifdef HASH_STATISTICS
60extern int hash_accesses, hash_collisions, hash_expansions, hash_overflows;
61#endif
62