1 /*- 2 * Copyright (c) 1991, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)extern.h 8.4 (Berkeley) 6/16/94 30 * $FreeBSD: head/lib/libc/db/hash/extern.h 165903 2007-01-09 00:28:16Z imp $ 31 */ 32 33 BUFHEAD *__add_ovflpage(HTAB *, BUFHEAD *); 34 int __addel(HTAB *, BUFHEAD *, const DBT *, const DBT *); 35 int __big_delete(HTAB *, BUFHEAD *); 36 int __big_insert(HTAB *, BUFHEAD *, const DBT *, const DBT *); 37 int __big_keydata(HTAB *, BUFHEAD *, DBT *, DBT *, int); 38 int __big_return(HTAB *, BUFHEAD *, int, DBT *, int); 39 int __big_split(HTAB *, BUFHEAD *, BUFHEAD *, BUFHEAD *, 40 int, uint32_t, SPLIT_RETURN *); 41 int __buf_free(HTAB *, int, int); 42 void __buf_init(HTAB *, int); 43 uint32_t __call_hash(HTAB *, char *, int); 44 int __delpair(HTAB *, BUFHEAD *, int); 45 int __expand_table(HTAB *); 46 int __find_bigpair(HTAB *, BUFHEAD *, int, char *, int); 47 uint16_t __find_last_page(HTAB *, BUFHEAD **); 48 void __free_ovflpage(HTAB *, BUFHEAD *); 49 BUFHEAD *__get_buf(HTAB *, uint32_t, BUFHEAD *, int); 50 int __get_page(HTAB *, char *, uint32_t, int, int, int); 51 int __ibitmap(HTAB *, int, int, int); 52 uint32_t __log2(uint32_t); 53 int __put_page(HTAB *, char *, uint32_t, int, int); 54 void __reclaim_buf(HTAB *, BUFHEAD *); 55 int __split_page(HTAB *, uint32_t, uint32_t); 56 57 /* Default hash routine. */ 58 extern uint32_t (*__default_hash)(const void *, size_t); 59 60 #ifdef HASH_STATISTICS 61 extern int hash_accesses, hash_collisions, hash_expansions, hash_overflows; 62 #endif 63