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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/lib/libc/db/hash/extern.h
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/*-

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 * SPDX-License-Identifier: BSD-3-Clause

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 *

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 * Copyright (c) 1991, 1993, 1994

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 *	The Regents of the University of California.  All rights reserved.

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 *

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 * Redistribution and use in source and binary forms, with or without

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 * modification, are permitted provided that the following conditions

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 * are met:

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 * 1. Redistributions of source code must retain the above copyright

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 *    notice, this list of conditions and the following disclaimer.

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 * 2. Redistributions in binary form must reproduce the above copyright

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 *    notice, this list of conditions and the following disclaimer in the

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 *    documentation and/or other materials provided with the distribution.

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 * 3. Neither the name of the University nor the names of its contributors

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 *    may be used to endorse or promote products derived from this software

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 *    without specific prior written permission.

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 *

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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

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 * SUCH DAMAGE.

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 */

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BUFHEAD	*__add_ovflpage(HTAB *, BUFHEAD *);

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int	 __addel(HTAB *, BUFHEAD *, const DBT *, const DBT *);

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int	 __big_delete(HTAB *, BUFHEAD *);

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int	 __big_insert(HTAB *, BUFHEAD *, const DBT *, const DBT *);

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int	 __big_keydata(HTAB *, BUFHEAD *, DBT *, DBT *, int);

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int	 __big_return(HTAB *, BUFHEAD *, int, DBT *, int);

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int	 __big_split(HTAB *, BUFHEAD *, BUFHEAD *, BUFHEAD *,

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		int, u_int32_t, SPLIT_RETURN *);

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int	 __buf_free(HTAB *, int, int);

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void	 __buf_init(HTAB *, int);

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u_int32_t	 __call_hash(HTAB *, char *, int);

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int	 __delpair(HTAB *, BUFHEAD *, int);

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int	 __expand_table(HTAB *);

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int	 __find_bigpair(HTAB *, BUFHEAD *, int, char *, int);

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u_int16_t	 __find_last_page(HTAB *, BUFHEAD **);

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void	 __free_ovflpage(HTAB *, BUFHEAD *);

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BUFHEAD	*__get_buf(HTAB *, u_int32_t, BUFHEAD *, int);

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int	 __get_page(HTAB *, char *, u_int32_t, int, int, int);

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int	 __ibitmap(HTAB *, int, int, int);

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u_int32_t	 __log2(u_int32_t);

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int	 __put_page(HTAB *, char *, u_int32_t, int, int);

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void	 __reclaim_buf(HTAB *, BUFHEAD *);

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int	 __split_page(HTAB *, u_int32_t, u_int32_t);

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/* Default hash routine. */

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extern u_int32_t (*__default_hash)(const void *, size_t);

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#ifdef HASH_STATISTICS

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extern int hash_accesses, hash_collisions, hash_expansions, hash_overflows;

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#endif

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