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Posted to cvs@httpd.apache.org by gs...@locus.apache.org on 2000/07/13 12:12:08 UTC
cvs commit: apache-2.0/src/lib/sdbm sdbm_private.h
gstein 00/07/13 03:12:08
Added: src/lib/sdbm sdbm_private.h
Log:
add new file, from Joe Orton's APR-ization of SDBM.
Submitted by: Joe Orton <jo...@orton.demon.co.uk>
Reviewed by: Greg Stein
Revision Changes Path
1.1 apache-2.0/src/lib/sdbm/sdbm_private.h
Index: sdbm_private.h
===================================================================
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
/*
* sdbm - ndbm work-alike hashed database library
* based on Per-Ake Larson's Dynamic Hashing algorithms. BIT 18 (1978).
* author: oz@nexus.yorku.ca
*/
#ifndef SDBM_PRIVATE_H
#define SDBM_PRIVATE_H
#include "apr_errno.h" /* for ap_status_t */
/* increase the block/page size and what can be inserted */
#if 1
#define DBLKSIZ 16384
#define PBLKSIZ 8192
#define PAIRMAX 8008 /* arbitrary on PBLKSIZ-N */
#else
#define DBLKSIZ 4096
#define PBLKSIZ 1024
#define PAIRMAX 1008 /* arbitrary on PBLKSIZ-N */
#endif
#define SPLTMAX 10 /* maximum allowed splits */
/* for a single insertion */
struct SDBM {
ap_file_t *dirf; /* directory file descriptor */
ap_file_t *pagf; /* page file descriptor */
ap_int32_t flags; /* status/error flags, see below */
long maxbno; /* size of dirfile in bits */
long curbit; /* current bit number */
long hmask; /* current hash mask */
long blkptr; /* current block for nextkey */
int keyptr; /* current key for nextkey */
long blkno; /* current page to read/write */
long pagbno; /* current page in pagbuf */
char pagbuf[PBLKSIZ]; /* page file block buffer */
long dirbno; /* current block in dirbuf */
char dirbuf[DBLKSIZ]; /* directory file block buffer */
};
ap_status_t sdbm_lock(SDBM *db);
ap_status_t sdbm_unlock(SDBM *db);
#endif /* SDBM_PRIVATE_H */