2 * Copyright (c) 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)extern.h 8.4 (Berkeley) 6/16/94
34 * $DragonFly: src/lib/libc/db/hash/extern.h,v 1.3 2003/11/12 20:21:23 eirikn Exp $
37 BUFHEAD *__add_ovflpage (HTAB *, BUFHEAD *);
38 int __addel (HTAB *, BUFHEAD *, const DBT *, const DBT *);
39 int __big_delete (HTAB *, BUFHEAD *);
40 int __big_insert (HTAB *, BUFHEAD *, const DBT *, const DBT *);
41 int __big_keydata (HTAB *, BUFHEAD *, DBT *, DBT *, int);
42 int __big_return (HTAB *, BUFHEAD *, int, DBT *, int);
43 int __big_split (HTAB *, BUFHEAD *, BUFHEAD *, BUFHEAD *,
44 int, u_int32_t, SPLIT_RETURN *);
45 int __buf_free (HTAB *, int, int);
46 void __buf_init (HTAB *, int);
47 u_int32_t __call_hash (HTAB *, char *, int);
48 int __delpair (HTAB *, BUFHEAD *, int);
49 int __expand_table (HTAB *);
50 int __find_bigpair (HTAB *, BUFHEAD *, int, char *, int);
51 u_int16_t __find_last_page (HTAB *, BUFHEAD **);
52 void __free_ovflpage (HTAB *, BUFHEAD *);
53 BUFHEAD *__get_buf (HTAB *, u_int32_t, BUFHEAD *, int);
54 int __get_page (HTAB *, char *, u_int32_t, int, int, int);
55 int __ibitmap (HTAB *, int, int, int);
56 u_int32_t __log2 (u_int32_t);
57 int __put_page (HTAB *, char *, u_int32_t, int, int);
58 void __reclaim_buf (HTAB *, BUFHEAD *);
59 int __split_page (HTAB *, u_int32_t, u_int32_t);
61 /* Default hash routine. */
62 extern u_int32_t (*__default_hash) (const void *, size_t);
64 #ifdef HASH_STATISTICS
65 extern int hash_accesses, hash_collisions, hash_expansions, hash_overflows;