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e9ce8d39 1/*
9385eb3d 2 * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
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3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
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6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
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20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
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23/*-
24 * Copyright (c) 1991, 1993, 1994
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25 * The Regents of the University of California. All rights reserved.
26 *
27 * Redistribution and use in source and binary forms, with or without
28 * modification, are permitted provided that the following conditions
29 * are met:
30 * 1. Redistributions of source code must retain the above copyright
31 * notice, this list of conditions and the following disclaimer.
32 * 2. Redistributions in binary form must reproduce the above copyright
33 * notice, this list of conditions and the following disclaimer in the
34 * documentation and/or other materials provided with the distribution.
35 * 3. All advertising materials mentioning features or use of this software
36 * must display the following acknowledgement:
37 * This product includes software developed by the University of
38 * California, Berkeley and its contributors.
39 * 4. Neither the name of the University nor the names of its contributors
40 * may be used to endorse or promote products derived from this software
41 * without specific prior written permission.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * SUCH DAMAGE.
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54 *
55 * @(#)extern.h 8.4 (Berkeley) 6/16/94
56 * $FreeBSD: src/lib/libc/db/hash/extern.h,v 1.3 2002/03/22 09:18:22 obrien Exp $
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57 */
58
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59BUFHEAD *__add_ovflpage(HTAB *, BUFHEAD *);
60int __addel(HTAB *, BUFHEAD *, const DBT *, const DBT *);
61int __big_delete(HTAB *, BUFHEAD *);
62int __big_insert(HTAB *, BUFHEAD *, const DBT *, const DBT *);
63int __big_keydata(HTAB *, BUFHEAD *, DBT *, DBT *, int);
64int __big_return(HTAB *, BUFHEAD *, int, DBT *, int);
65int __big_split(HTAB *, BUFHEAD *, BUFHEAD *, BUFHEAD *,
66 int, u_int32_t, SPLIT_RETURN *);
67int __buf_free(HTAB *, int, int);
68void __buf_init(HTAB *, int);
69u_int32_t __call_hash(HTAB *, char *, int);
70int __delpair(HTAB *, BUFHEAD *, int);
71int __expand_table(HTAB *);
72int __find_bigpair(HTAB *, BUFHEAD *, int, char *, int);
73u_int16_t __find_last_page(HTAB *, BUFHEAD **);
74void __free_ovflpage(HTAB *, BUFHEAD *);
75BUFHEAD *__get_buf(HTAB *, u_int32_t, BUFHEAD *, int);
76int __get_page(HTAB *, char *, u_int32_t, int, int, int);
77int __ibitmap(HTAB *, int, int, int);
78u_int32_t __log2(u_int32_t);
79int __put_page(HTAB *, char *, u_int32_t, int, int);
80void __reclaim_buf(HTAB *, BUFHEAD *);
81int __split_page(HTAB *, u_int32_t, u_int32_t);
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82
83/* Default hash routine. */
9385eb3d 84extern u_int32_t (*__default_hash)(const void *, size_t);
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85
86#ifdef HASH_STATISTICS
9385eb3d 87extern int hash_accesses, hash_collisions, hash_expansions, hash_overflows;
e9ce8d39 88#endif