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/*-
 * 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
 * $FreeBSD: src/include/db.h,v 1.5 2002/03/26 01:35:05 bde Exp $
 */
 
#ifndef _DB_H_
#define _DB_H_
 
#include <sys/types.h>
#include <sys/cdefs.h>
#include <sys/config.h>
 
#include <limits.h>
 
#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 __uint32_t      pgno_t;
#define MAX_PAGE_OFFSET 65535           /* >= # of bytes in a page */
typedef __uint16_t      indx_t;
#define MAX_REC_NUMBER  0xffffffff      /* >= # of records in a tree */
typedef __uint32_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;
 
/*
 * !!!
 * The following flags are included in the dbopen(3) call as part of the
 * open(2) flags.  In order to avoid conflicts with the open flags, start
 * at the top of the 16 or 32-bit number space and work our way down.  If
 * the open flags were significantly expanded in the future, it could be
 * a problem.  Wish I'd left another flags word in the dbopen call.
 *
 * !!!
 * 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.
 */
#if UINT_MAX > 65535
#define DB_LOCK         0x20000000      /* Do locking. */
#define DB_SHMEM        0x40000000      /* Use shared memory. */
#define DB_TXN          0x80000000      /* Do transactions. */
#else
#define DB_LOCK             0x2000      /* Do locking. */
#define DB_SHMEM            0x4000      /* Use shared memory. */
#define DB_TXN              0x8000      /* Do transactions. */
#endif
 
/* Access method description structure. */
typedef struct __db {
        DBTYPE type;                    /* Underlying db type. */
        int (*close)(struct __db *);
        int (*del)(const struct __db *, const DBT *, u_int);
        int (*get)(const struct __db *, const DBT *, DBT *, u_int);
        int (*put)(const struct __db *, DBT *, const DBT *, u_int);
        int (*seq)(const struct __db *, DBT *, DBT *, u_int);
        int (*sync)(const struct __db *, u_int);
        void *internal;                 /* Access method private. */
        int (*fd)(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 */
            (const DBT *, const DBT *);
        size_t  (*prefix)       /* prefix function */
            (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 */
        __uint32_t              /* hash function */
                (*hash)(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;
 
/*
 * 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) {                                                  \
        __uint32_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) {                                                  \
        __uint32_t _tmp = *(__uint32_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) {                                                  \
        __uint16_t _tmp = a;                                            \
        ((char *)&a)[0] = ((char *)&_tmp)[1];                            \
        ((char *)&a)[1] = ((char *)&_tmp)[0];                            \
}
#define P_16_SWAP(a) {                                                  \
        __uint16_t _tmp = *(__uint16_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];                           \
}
 
__BEGIN_DECLS
DB *dbopen(const char *, int, int, DBTYPE, const void *);
 
#ifdef __DBINTERFACE_PRIVATE
DB      *__bt_open(const char *, int, int, const BTREEINFO *, int);
DB      *__hash_open(const char *, int, int, const HASHINFO *, int);
DB      *__rec_open(const char *, int, int, const RECNOINFO *, int);
void     __dbpanic(DB *dbp);
#endif
__END_DECLS
#endif /* !_DB_H_ */

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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [search/] [db_local.h] - Blame information for rev 179

Line No.	Rev	Author	Line
1	148	jeremybenn	`/*-`
2			`* Copyright (c) 1990, 1993, 1994`
3			`* The Regents of the University of California. All rights reserved.`
4			`*`
5			`* Redistribution and use in source and binary forms, with or without`
6			`* modification, are permitted provided that the following conditions`
7			`* are met:`
8			`* 1. Redistributions of source code must retain the above copyright`
9			`* notice, this list of conditions and the following disclaimer.`
10			`* 2. Redistributions in binary form must reproduce the above copyright`
11			`* notice, this list of conditions and the following disclaimer in the`
12			`* documentation and/or other materials provided with the distribution.`
13			`* 3. All advertising materials mentioning features or use of this software`
14			`* must display the following acknowledgement:`
15			`* This product includes software developed by the University of`
16			`* California, Berkeley and its contributors.`
17			`* 4. Neither the name of the University nor the names of its contributors`
18			`* may be used to endorse or promote products derived from this software`
19			`* without specific prior written permission.`
20			`*`
21			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22			`* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE`
23			`* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE`
24			`* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE`
25			`* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL`
26			`* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS`
27			`* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)`
28			`* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT`
29			`* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY`
30			`* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF`
31			`* SUCH DAMAGE.`
32			`*`
33			`* @(#)db.h 8.7 (Berkeley) 6/16/94`
34			`* $FreeBSD: src/include/db.h,v 1.5 2002/03/26 01:35:05 bde Exp $`
35			`*/`
36
37			`#ifndef _DB_H_`
38			`#define _DB_H_`
39
40			`#include <sys/types.h>`
41			`#include <sys/cdefs.h>`
42			`#include <sys/config.h>`
43
44			`#include <limits.h>`
45
46			`#define RET_ERROR -1 /* Return values. */`
47			`#define RET_SUCCESS 0`
48			`#define RET_SPECIAL 1`
49
50			`#define MAX_PAGE_NUMBER 0xffffffff /* >= # of pages in a file */`
51			`typedef __uint32_t pgno_t;`
52			`#define MAX_PAGE_OFFSET 65535 /* >= # of bytes in a page */`
53			`typedef __uint16_t indx_t;`
54			`#define MAX_REC_NUMBER 0xffffffff /* >= # of records in a tree */`
55			`typedef __uint32_t recno_t;`
56
57			`/* Key/data structure -- a Data-Base Thang. */`
58			`typedef struct {`
59			`void data; / data */`
60			`size_t size; /* data length */`
61			`} DBT;`
62
63			`/* Routine flags. */`
64			`#define R_CURSOR 1 /* del, put, seq */`
65			`#define __R_UNUSED 2 /* UNUSED */`
66			`#define R_FIRST 3 /* seq */`
67			`#define R_IAFTER 4 /* put (RECNO) */`
68			`#define R_IBEFORE 5 /* put (RECNO) */`
69			`#define R_LAST 6 /* seq (BTREE, RECNO) */`
70			`#define R_NEXT 7 /* seq */`
71			`#define R_NOOVERWRITE 8 /* put */`
72			`#define R_PREV 9 /* seq (BTREE, RECNO) */`
73			`#define R_SETCURSOR 10 /* put (RECNO) */`
74			`#define R_RECNOSYNC 11 /* sync (RECNO) */`
75
76			`typedef enum { DB_BTREE, DB_HASH, DB_RECNO } DBTYPE;`
77
78			`/*`
79			`* !!!`
80			`* The following flags are included in the dbopen(3) call as part of the`
81			`* open(2) flags. In order to avoid conflicts with the open flags, start`
82			`* at the top of the 16 or 32-bit number space and work our way down. If`
83			`* the open flags were significantly expanded in the future, it could be`
84			`* a problem. Wish I'd left another flags word in the dbopen call.`
85			`*`
86			`* !!!`
87			`* None of this stuff is implemented yet. The only reason that it's here`
88			`* is so that the access methods can skip copying the key/data pair when`
89			`* the DB_LOCK flag isn't set.`
90			`*/`
91			`#if UINT_MAX > 65535`
92			`#define DB_LOCK 0x20000000 /* Do locking. */`
93			`#define DB_SHMEM 0x40000000 /* Use shared memory. */`
94			`#define DB_TXN 0x80000000 /* Do transactions. */`
95			`#else`
96			`#define DB_LOCK 0x2000 /* Do locking. */`
97			`#define DB_SHMEM 0x4000 /* Use shared memory. */`
98			`#define DB_TXN 0x8000 /* Do transactions. */`
99			`#endif`
100
101			`/* Access method description structure. */`
102			`typedef struct __db {`
103			`DBTYPE type; /* Underlying db type. */`
104			`int (close)(struct __db );`
105			`int (del)(const struct __db , const DBT *, u_int);`
106			`int (get)(const struct __db , const DBT , DBT , u_int);`
107			`int (put)(const struct __db , DBT , const DBT , u_int);`
108			`int (seq)(const struct __db , DBT , DBT , u_int);`
109			`int (sync)(const struct __db , u_int);`
110			`void internal; / Access method private. */`
111			`int (fd)(const struct __db );`
112			`} DB;`
113
114			`#define BTREEMAGIC 0x053162`
115			`#define BTREEVERSION 3`
116
117			`/* Structure used to pass parameters to the btree routines. */`
118			`typedef struct {`
119			`#define R_DUP 0x01 /* duplicate keys */`
120			`u_long flags;`
121			`u_int cachesize; /* bytes to cache */`
122			`int maxkeypage; /* maximum keys per page */`
123			`int minkeypage; /* minimum keys per page */`
124			`u_int psize; /* page size */`
125			`int (compare) / comparison function */`
126			`(const DBT , const DBT );`
127			`size_t (prefix) / prefix function */`
128			`(const DBT , const DBT );`
129			`int lorder; /* byte order */`
130			`} BTREEINFO;`
131
132			`#define HASHMAGIC 0x061561`
133			`#define HASHVERSION 2`
134
135			`/* Structure used to pass parameters to the hashing routines. */`
136			`typedef struct {`
137			`u_int bsize; /* bucket size */`
138			`u_int ffactor; /* fill factor */`
139			`u_int nelem; /* number of elements */`
140			`u_int cachesize; /* bytes to cache */`
141			`__uint32_t /* hash function */`
142			`(hash)(const void , size_t);`
143			`int lorder; /* byte order */`
144			`} HASHINFO;`
145
146			`/* Structure used to pass parameters to the record routines. */`
147			`typedef struct {`
148			`#define R_FIXEDLEN 0x01 /* fixed-length records */`
149			`#define R_NOKEY 0x02 /* key not required */`
150			`#define R_SNAPSHOT 0x04 /* snapshot the input */`
151			`u_long flags;`
152			`u_int cachesize; /* bytes to cache */`
153			`u_int psize; /* page size */`
154			`int lorder; /* byte order */`
155			`size_t reclen; /* record length (fixed-length records) */`
156			`u_char bval; /* delimiting byte (variable-length records */`
157			`char bfname; / btree file name */`
158			`} RECNOINFO;`
159
160			`/*`
161			`* Little endian <==> big endian 32-bit swap macros.`
162			`* M_32_SWAP swap a memory location`
163			`* P_32_SWAP swap a referenced memory location`
164			`* P_32_COPY swap from one location to another`
165			`*/`
166			`#define M_32_SWAP(a) { \`
167			`__uint32_t _tmp = a; \`
168			`((char )&a)[0] = ((char )&_tmp)[3]; \`
169			`((char )&a)[1] = ((char )&_tmp)[2]; \`
170			`((char )&a)[2] = ((char )&_tmp)[1]; \`
171			`((char )&a)[3] = ((char )&_tmp)[0]; \`
172			`}`
173			`#define P_32_SWAP(a) { \`
174			`__uint32_t _tmp = (__uint32_t )a; \`
175			`((char )a)[0] = ((char )&_tmp)[3]; \`
176			`((char )a)[1] = ((char )&_tmp)[2]; \`
177			`((char )a)[2] = ((char )&_tmp)[1]; \`
178			`((char )a)[3] = ((char )&_tmp)[0]; \`
179			`}`
180			`#define P_32_COPY(a, b) { \`
181			`((char )&(b))[0] = ((char )&(a))[3]; \`
182			`((char )&(b))[1] = ((char )&(a))[2]; \`
183			`((char )&(b))[2] = ((char )&(a))[1]; \`
184			`((char )&(b))[3] = ((char )&(a))[0]; \`
185			`}`
186
187			`/*`
188			`* Little endian <==> big endian 16-bit swap macros.`
189			`* M_16_SWAP swap a memory location`
190			`* P_16_SWAP swap a referenced memory location`
191			`* P_16_COPY swap from one location to another`
192			`*/`
193			`#define M_16_SWAP(a) { \`
194			`__uint16_t _tmp = a; \`
195			`((char )&a)[0] = ((char )&_tmp)[1]; \`
196			`((char )&a)[1] = ((char )&_tmp)[0]; \`
197			`}`
198			`#define P_16_SWAP(a) { \`
199			`__uint16_t _tmp = (__uint16_t )a; \`
200			`((char )a)[0] = ((char )&_tmp)[1]; \`
201			`((char )a)[1] = ((char )&_tmp)[0]; \`
202			`}`
203			`#define P_16_COPY(a, b) { \`
204			`((char )&(b))[0] = ((char )&(a))[1]; \`
205			`((char )&(b))[1] = ((char )&(a))[0]; \`
206			`}`
207
208			`__BEGIN_DECLS`
209			`DB dbopen(const char , int, int, DBTYPE, const void *);`
210
211			`#ifdef __DBINTERFACE_PRIVATE`
212			`DB __bt_open(const char , int, int, const BTREEINFO *, int);`
213			`DB __hash_open(const char , int, int, const HASHINFO *, int);`
214			`DB __rec_open(const char , int, int, const RECNOINFO *, int);`
215			`void __dbpanic(DB *dbp);`
216			`#endif`
217			`__END_DECLS`
218			`#endif /* !_DB_H_ */`