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 * $DragonFly: src/lib/libc/db/hash/extern.h,v 1.5 2005/09/19 09:20:37 asmodai Exp $ 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, u_int32_t, SPLIT_RETURN *); 41 int __buf_free (HTAB *, int, int); 42 void __buf_init (HTAB *, int); 43 u_int32_t __call_hash (HTAB *, const char *, int); 44 int __delpair (HTAB *, BUFHEAD *, int); 45 int __expand_table (HTAB *); 46 int __find_bigpair (HTAB *, BUFHEAD *, int, const char *, int); 47 u_int16_t __find_last_page (HTAB *, BUFHEAD **); 48 void __free_ovflpage (HTAB *, BUFHEAD *); 49 BUFHEAD *__get_buf (HTAB *, u_int32_t, BUFHEAD *, int); 50 int __get_page (HTAB *, char *, u_int32_t, int, int, int); 51 int __ibitmap (HTAB *, int, int, int); 52 u_int32_t __log2 (u_int32_t); 53 int __put_page (HTAB *, char *, u_int32_t, int, int); 54 void __reclaim_buf (HTAB *, BUFHEAD *); 55 int __split_page (HTAB *, u_int32_t, u_int32_t); 56 57 /* Default hash routine. */ 58 extern u_int32_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