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    1: /*      $OpenBSD: extern.h,v 1.7 2003/06/02 20:18:33 millert Exp $   */
    2: 
    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:  *      @(#)extern.h    8.4 (Berkeley) 6/16/94
   32:  */
   33: 
   34: BUFHEAD *__add_ovflpage(HTAB *, BUFHEAD *);
   35: int      __addel(HTAB *, BUFHEAD *, const DBT *, const DBT *);
   36: int      __big_delete(HTAB *, BUFHEAD *);
   37: int      __big_insert(HTAB *, BUFHEAD *, const DBT *, const DBT *);
   38: int      __big_keydata(HTAB *, BUFHEAD *, DBT *, DBT *, int);
   39: int      __big_return(HTAB *, BUFHEAD *, int, DBT *, int);
   40: int      __big_split(HTAB *, BUFHEAD *, BUFHEAD *, BUFHEAD *,
   41:             int, u_int32_t, SPLIT_RETURN *);
   42: int      __buf_free(HTAB *, int, int);
   43: void     __buf_init(HTAB *, int);
   44: u_int32_t        __call_hash(HTAB *, char *, int);
   45: int      __delpair(HTAB *, BUFHEAD *, int);
   46: int      __expand_table(HTAB *);
   47: int      __find_bigpair(HTAB *, BUFHEAD *, int, char *, int);
   48: u_int16_t        __find_last_page(HTAB *, BUFHEAD **);
   49: void     __free_ovflpage(HTAB *, BUFHEAD *);
   50: BUFHEAD *__get_buf(HTAB *, u_int32_t, BUFHEAD *, int);
   51: int      __get_page(HTAB *, char *, u_int32_t, int, int, int);
   52: int      __ibitmap(HTAB *, int, int, int);
   53: u_int32_t        __log2(u_int32_t);
   54: int      __put_page(HTAB *, char *, u_int32_t, int, int);
   55: void     __reclaim_buf(HTAB *, BUFHEAD *);
   56: int      __split_page(HTAB *, u_int32_t, u_int32_t);
   57: 
   58: /* Default hash routine. */
   59: extern u_int32_t (*__default_hash)(const void *, size_t);
   60: 
   61: #ifdef HASH_STATISTICS
   62: extern int hash_accesses, hash_collisions, hash_expansions, hash_overflows;
   63: #endif