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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)extern.h 8.4 (Berkeley) 6/16/94 34 * $DragonFly: src/lib/libc/db/hash/extern.h,v 1.4 2005/04/25 19:36:57 joerg Exp $ 35 */ 36 37 BUFHEAD *__add_ovflpage (HTAB *, BUFHEAD *); 38 int __addel (HTAB *, BUFHEAD *, const DBT *, const DBT *); 39 int __big_delete (HTAB *, BUFHEAD *); 40 int __big_insert (HTAB *, BUFHEAD *, const DBT *, const DBT *); 41 int __big_keydata (HTAB *, BUFHEAD *, DBT *, DBT *, int); 42 int __big_return (HTAB *, BUFHEAD *, int, DBT *, int); 43 int __big_split (HTAB *, BUFHEAD *, BUFHEAD *, BUFHEAD *, 44 int, u_int32_t, SPLIT_RETURN *); 45 int __buf_free (HTAB *, int, int); 46 void __buf_init (HTAB *, int); 47 u_int32_t __call_hash (HTAB *, const char *, int); 48 int __delpair (HTAB *, BUFHEAD *, int); 49 int __expand_table (HTAB *); 50 int __find_bigpair (HTAB *, BUFHEAD *, int, const char *, int); 51 u_int16_t __find_last_page (HTAB *, BUFHEAD **); 52 void __free_ovflpage (HTAB *, BUFHEAD *); 53 BUFHEAD *__get_buf (HTAB *, u_int32_t, BUFHEAD *, int); 54 int __get_page (HTAB *, char *, u_int32_t, int, int, int); 55 int __ibitmap (HTAB *, int, int, int); 56 u_int32_t __log2 (u_int32_t); 57 int __put_page (HTAB *, char *, u_int32_t, int, int); 58 void __reclaim_buf (HTAB *, BUFHEAD *); 59 int __split_page (HTAB *, u_int32_t, u_int32_t); 60 61 /* Default hash routine. */ 62 extern u_int32_t (*__default_hash) (const void *, size_t); 63 64 #ifdef HASH_STATISTICS 65 extern int hash_accesses, hash_collisions, hash_expansions, hash_overflows; 66 #endif 67