This is db.h in view mode; [Download] [Up]
/*-
* Copyright (c) 1990, 1993, 1994
* The Regents of the University of California. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS 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 REGENTS OR 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, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)db.h 8.7 (Berkeley) 6/16/94
*/
#ifndef _DB_H_
#define _DB_H_
#include <sys/types.h>
#ifdef __DBINTERFACE_PRIVATE
#include "config.h"
#include "port.h"
#endif
/*
* XXX
* We don't want to collide with an existing DB implementation in the
* local libraries. Some of them have diverged, and we don't include
* the hash routines in any case.
*/
#define __bt_close nvi__bt_close
#define __bt_cmp nvi__bt_cmp
#define __bt_defcmp nvi__bt_defcmp
#define __bt_defpfx nvi__bt_defpfx
#define __bt_delete nvi__bt_delete
#define __bt_dleaf nvi__bt_dleaf
#define __bt_dmpage nvi__bt_dmpage
#define __bt_dnpage nvi__bt_dnpage
#define __bt_dpage nvi__bt_dpage
#define __bt_dump nvi__bt_dump
#define __bt_fd nvi__bt_fd
#define __bt_free nvi__bt_free
#define __bt_get nvi__bt_get
#define __bt_new nvi__bt_new
#define __bt_open nvi__bt_open
#define __bt_pgin nvi__bt_pgin
#define __bt_pgout nvi__bt_pgout
#define __bt_put nvi__bt_put
#define __bt_ret nvi__bt_ret
#define __bt_search nvi__bt_search
#define __bt_seq nvi__bt_seq
#define __bt_setcur nvi__bt_setcur
#define __bt_split nvi__bt_split
#define __bt_stat nvi__bt_stat
#define __bt_sync nvi__bt_sync
#define __dbpanic nvi__dbpanic
#define __ovfl_delete nvi__ovfl_delete
#define __ovfl_get nvi__ovfl_get
#define __ovfl_put nvi__ovfl_put
#define __rec_close nvi__rec_close
#define __rec_delete nvi__rec_delete
#define __rec_dleaf nvi__rec_dleaf
#define __rec_fd nvi__rec_fd
#define __rec_fmap nvi__rec_fmap
#define __rec_fpipe nvi__rec_fpipe
#define __rec_get nvi__rec_get
#define __rec_iput nvi__rec_iput
#define __rec_open nvi__rec_open
#define __rec_put nvi__rec_put
#define __rec_ret nvi__rec_ret
#define __rec_search nvi__rec_search
#define __rec_seq nvi__rec_seq
#define __rec_sync nvi__rec_sync
#define __rec_vmap nvi__rec_vmap
#define __rec_vpipe nvi__rec_vpipe
#define dbopen nvidbopen
#define mpool_close nvimpool_close
#define mpool_filter nvimpool_filter
#define mpool_get nvimpool_get
#define mpool_new nvimpool_new
#define mpool_open nvimpool_open
#define mpool_put nvimpool_put
#define mpool_stat nvimpool_stat
#define mpool_sync nvimpool_sync
#define RET_ERROR -1 /* Return values. */
#define RET_SUCCESS 0
#define RET_SPECIAL 1
#define MAX_PAGE_NUMBER 0xffffffff /* >= # of pages in a file */
typedef u_int32_t pgno_t;
#define MAX_PAGE_OFFSET 65535 /* >= # of bytes in a page */
typedef u_int16_t indx_t;
#define MAX_REC_NUMBER 0xffffffff /* >= # of records in a tree */
typedef u_int32_t recno_t;
/* Key/data structure -- a Data-Base Thang. */
typedef struct {
void *data; /* data */
size_t size; /* data length */
} DBT;
/* Routine flags. */
#define R_CURSOR 1 /* del, put, seq */
#define __R_UNUSED 2 /* UNUSED */
#define R_FIRST 3 /* seq */
#define R_IAFTER 4 /* put (RECNO) */
#define R_IBEFORE 5 /* put (RECNO) */
#define R_LAST 6 /* seq (BTREE, RECNO) */
#define R_NEXT 7 /* seq */
#define R_NOOVERWRITE 8 /* put */
#define R_PREV 9 /* seq (BTREE, RECNO) */
#define R_SETCURSOR 10 /* put (RECNO) */
#define R_RECNOSYNC 11 /* sync (RECNO) */
typedef enum { DB_BTREE, DB_HASH, DB_RECNO } DBTYPE;
/*
* !!!
* None of this stuff is implemented yet. The only reason that it's here
* is so that the access methods can skip copying the key/data pair when
* the DB_LOCK flag isn't set.
*/
#define DB_LOCK 0x2000 /* Do locking. */
#define DB_SHMEM 0x4000 /* Use shared memory. */
#define DB_TXN 0x8000 /* Do transactions. */
/* Access method description structure. */
typedef struct __db {
DBTYPE type; /* Underlying db type. */
int (*close) __P((struct __db *));
int (*del) __P((const struct __db *, const DBT *, u_int));
int (*get) __P((const struct __db *, const DBT *, DBT *, u_int));
int (*put) __P((const struct __db *, DBT *, const DBT *, u_int));
int (*seq) __P((const struct __db *, DBT *, DBT *, u_int));
int (*sync) __P((const struct __db *, u_int));
void *internal; /* Access method private. */
int (*fd) __P((const struct __db *));
} DB;
#define BTREEMAGIC 0x053162
#define BTREEVERSION 3
/* Structure used to pass parameters to the btree routines. */
typedef struct {
#define R_DUP 0x01 /* duplicate keys */
u_long flags;
u_int cachesize; /* bytes to cache */
int maxkeypage; /* maximum keys per page */
int minkeypage; /* minimum keys per page */
u_int psize; /* page size */
int (*compare) /* comparison function */
__P((const DBT *, const DBT *));
size_t (*prefix) /* prefix function */
__P((const DBT *, const DBT *));
int lorder; /* byte order */
} BTREEINFO;
#define HASHMAGIC 0x061561
#define HASHVERSION 2
/* Structure used to pass parameters to the hashing routines. */
typedef struct {
u_int bsize; /* bucket size */
u_int ffactor; /* fill factor */
u_int nelem; /* number of elements */
u_int cachesize; /* bytes to cache */
u_int32_t /* hash function */
(*hash) __P((const void *, size_t));
int lorder; /* byte order */
} HASHINFO;
/* Structure used to pass parameters to the record routines. */
typedef struct {
#define R_FIXEDLEN 0x01 /* fixed-length records */
#define R_NOKEY 0x02 /* key not required */
#define R_SNAPSHOT 0x04 /* snapshot the input */
u_long flags;
u_int cachesize; /* bytes to cache */
u_int psize; /* page size */
int lorder; /* byte order */
size_t reclen; /* record length (fixed-length records) */
u_char bval; /* delimiting byte (variable-length records */
char *bfname; /* btree file name */
} RECNOINFO;
#ifdef __DBINTERFACE_PRIVATE
/*
* Little endian <==> big endian 32-bit swap macros.
* M_32_SWAP swap a memory location
* P_32_SWAP swap a referenced memory location
* P_32_COPY swap from one location to another
*/
#define M_32_SWAP(a) { \
u_int32_t _tmp = a; \
((char *)&a)[0] = ((char *)&_tmp)[3]; \
((char *)&a)[1] = ((char *)&_tmp)[2]; \
((char *)&a)[2] = ((char *)&_tmp)[1]; \
((char *)&a)[3] = ((char *)&_tmp)[0]; \
}
#define P_32_SWAP(a) { \
u_int32_t _tmp = *(u_int32_t *)a; \
((char *)a)[0] = ((char *)&_tmp)[3]; \
((char *)a)[1] = ((char *)&_tmp)[2]; \
((char *)a)[2] = ((char *)&_tmp)[1]; \
((char *)a)[3] = ((char *)&_tmp)[0]; \
}
#define P_32_COPY(a, b) { \
((char *)&(b))[0] = ((char *)&(a))[3]; \
((char *)&(b))[1] = ((char *)&(a))[2]; \
((char *)&(b))[2] = ((char *)&(a))[1]; \
((char *)&(b))[3] = ((char *)&(a))[0]; \
}
/*
* Little endian <==> big endian 16-bit swap macros.
* M_16_SWAP swap a memory location
* P_16_SWAP swap a referenced memory location
* P_16_COPY swap from one location to another
*/
#define M_16_SWAP(a) { \
u_int16_t _tmp = a; \
((char *)&a)[0] = ((char *)&_tmp)[1]; \
((char *)&a)[1] = ((char *)&_tmp)[0]; \
}
#define P_16_SWAP(a) { \
u_int16_t _tmp = *(u_int16_t *)a; \
((char *)a)[0] = ((char *)&_tmp)[1]; \
((char *)a)[1] = ((char *)&_tmp)[0]; \
}
#define P_16_COPY(a, b) { \
((char *)&(b))[0] = ((char *)&(a))[1]; \
((char *)&(b))[1] = ((char *)&(a))[0]; \
}
#endif
DB *dbopen __P((const char *, int, int, DBTYPE, const void *));
#ifdef __DBINTERFACE_PRIVATE
DB *__bt_open __P((const char *, int, int, const BTREEINFO *, int));
DB *__hash_open __P((const char *, int, int, const HASHINFO *, int));
DB *__rec_open __P((const char *, int, int, const RECNOINFO *, int));
void __dbpanic __P((DB *dbp));
#endif
#endif /* !_DB_H_ */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.