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