xref: /netbsd/lib/libc/db/hash/extern.h (revision bf9ec67e)
1 /*	$NetBSD: extern.h,v 1.6 1998/12/09 12:42:48 christos Exp $	*/
2 
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. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed by the University of
18  *	California, Berkeley and its contributors.
19  * 4. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  *
35  *	@(#)extern.h	8.4 (Berkeley) 6/16/94
36  */
37 
38 BUFHEAD	*__add_ovflpage __P((HTAB *, BUFHEAD *));
39 int	 __addel __P((HTAB *, BUFHEAD *, const DBT *, const DBT *));
40 int	 __big_delete __P((HTAB *, BUFHEAD *));
41 int	 __big_insert __P((HTAB *, BUFHEAD *, const DBT *, const DBT *));
42 int	 __big_keydata __P((HTAB *, BUFHEAD *, DBT *, DBT *, int));
43 int	 __big_return __P((HTAB *, BUFHEAD *, int, DBT *, int));
44 int	 __big_split __P((HTAB *, BUFHEAD *, BUFHEAD *, BUFHEAD *,
45 		int, u_int32_t, SPLIT_RETURN *));
46 int	 __buf_free __P((HTAB *, int, int));
47 void	 __buf_init __P((HTAB *, u_int));
48 u_int32_t	 __call_hash __P((HTAB *, char *, int));
49 int	 __delpair __P((HTAB *, BUFHEAD *, int));
50 int	 __expand_table __P((HTAB *));
51 int	 __find_bigpair __P((HTAB *, BUFHEAD *, int, char *, int));
52 u_int16_t	 __find_last_page __P((HTAB *, BUFHEAD **));
53 void	 __free_ovflpage __P((HTAB *, BUFHEAD *));
54 BUFHEAD	*__get_buf __P((HTAB *, u_int32_t, BUFHEAD *, int));
55 int	 __get_page __P((HTAB *, char *, u_int32_t, int, int, int));
56 int	 __ibitmap __P((HTAB *, int, int, int));
57 u_int32_t	 __log2 __P((u_int32_t));
58 int	 __put_page __P((HTAB *, char *, u_int32_t, int, int));
59 void	 __reclaim_buf __P((HTAB *, BUFHEAD *));
60 int	 __split_page __P((HTAB *, u_int32_t, u_int32_t));
61 
62 /* Default hash routine. */
63 extern u_int32_t (*__default_hash) __P((const void *, size_t));
64 
65 #ifdef HASH_STATISTICS
66 extern int hash_accesses, hash_collisions, hash_expansions, hash_overflows;
67 #endif
68