| 1 | /*-
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| 2 | * Copyright (c) 1991, 1993, 1994
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| 3 | * The Regents of the University of California. All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | * 1. Redistributions of source code must retain the above copyright
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| 9 | * notice, this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer in the
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| 12 | * documentation and/or other materials provided with the distribution.
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| 13 | * 3. All advertising materials mentioning features or use of this software
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| 14 | * must display the following acknowledgement:
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| 15 | * This product includes software developed by the University of
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| 16 | * California, Berkeley and its contributors.
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| 17 | * 4. Neither the name of the University nor the names of its contributors
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| 18 | * may be used to endorse or promote products derived from this software
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| 19 | * without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 31 | * SUCH DAMAGE.
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| 32 | *
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| 33 | * @(#)extern.h 8.4 (Berkeley) 6/16/94
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| 34 | * $FreeBSD: src/lib/libc/db/hash/extern.h,v 1.3 2002/03/22 09:18:22 obrien Exp $
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| 35 | */
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| 36 |
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| 37 | BUFHEAD *__add_ovflpage(HTAB *, BUFHEAD *);
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| 38 | int __addel(HTAB *, BUFHEAD *, const DBT *, const DBT *);
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| 39 | int __big_delete(HTAB *, BUFHEAD *);
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| 40 | int __big_insert(HTAB *, BUFHEAD *, const DBT *, const DBT *);
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| 41 | int __big_keydata(HTAB *, BUFHEAD *, DBT *, DBT *, int);
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| 42 | int __big_return(HTAB *, BUFHEAD *, int, DBT *, int);
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| 43 | int __big_split(HTAB *, BUFHEAD *, BUFHEAD *, BUFHEAD *,
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| 44 | int, u_int32_t, SPLIT_RETURN *);
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| 45 | int __buf_free(HTAB *, int, int);
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| 46 | void __buf_init(HTAB *, int);
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| 47 | u_int32_t __call_hash(HTAB *, char *, int);
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| 48 | int __delpair(HTAB *, BUFHEAD *, int);
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| 49 | int __expand_table(HTAB *);
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| 50 | int __find_bigpair(HTAB *, BUFHEAD *, int, char *, int);
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| 51 | u_int16_t __find_last_page(HTAB *, BUFHEAD **);
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| 52 | void __free_ovflpage(HTAB *, BUFHEAD *);
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| 53 | BUFHEAD *__get_buf(HTAB *, u_int32_t, BUFHEAD *, int);
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| 54 | int __get_page(HTAB *, char *, u_int32_t, int, int, int);
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| 55 | int __ibitmap(HTAB *, int, int, int);
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| 56 | u_int32_t __log2(u_int32_t);
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| 57 | int __put_page(HTAB *, char *, u_int32_t, int, int);
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| 58 | void __reclaim_buf(HTAB *, BUFHEAD *);
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| 59 | int __split_page(HTAB *, u_int32_t, u_int32_t);
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| 60 |
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| 61 | /* Default hash routine. */
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| 62 | extern u_int32_t (*__default_hash)(const void *, size_t);
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| 63 |
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| 64 | #ifdef HASH_STATISTICS
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| 65 | extern int hash_accesses, hash_collisions, hash_expansions, hash_overflows;
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| 66 | #endif
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