/*-
* 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>
#include <sys/stat.h>
#include <limits.h>
#ifndef WIN32
#include <unistd.h>
#else
#ifndef __BORLANDC__
typedef int mode_t;
#endif
#endif
#if defined _MSC_VER
#define stat _stat
// redefines the socket one in os.h *ugly hack* for now - jl
#undef close
#define close _close
#define read _read
#define open _open
#define write _write
#define lseek _lseek
#define unlink _unlink
#define getpid _getpid
#endif
#ifndef MAXPATHLEN
#ifdef WIN32
#include <io.h>
#endif
#ifdef MAXPATH
#define MAXPATHLEN MAXPATH
#else
#define MAXPATHLEN 260
#endif
#endif
#ifndef O_ACCMODE
#define O_ACCMODE 3 /* mask for file access modes - not defined in Visual C */
#endif
#ifndef S_ISDIR
#define S_ISDIR(m) ((m) & S_IFDIR)
#endif
#ifndef NSIG
#define NSIG 23 /* highest defined signal no. + 1 */
#endif
/*
* If your system doesn't have an include file with the appropriate
* byte order set, make sure you specify the correct one.
*/
#ifndef BYTE_ORDER
#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
#define BYTE_ORDER LITTLE_ENDIAN /* Set for your system. */
#endif
#ifndef EFTYPE
#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
#endif
#ifndef MAX /* Usually found in <sys/param.h>. */
#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
#endif
#ifndef MIN /* Usually found in <sys/param.h>. */
#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
#endif
#if (_MSC_VER >= 1400) || (__BORLANDC__ >= 0x0630) // VC 8.0+ 2005 | Embarcadero C++ Builder XE
#include <stdint.h>
#else
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef short int16_t;
typedef unsigned short uint16_t;
typedef int int32_t;
typedef unsigned int uint32_t;
#endif
#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;
/* 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_FIRST 3 /* seq */
#define R_NEXT 7 /* seq */
#define R_NOOVERWRITE 8 /* put */
typedef enum { DB_BTREE, DB_HASH, DB_RECNO } DBTYPE;
/* Access method description structure. */
typedef struct __db {
DBTYPE type; /* Underlying db type. */
int (*close) (struct __db *);
int (*del) (const struct __db *, const DBT *, uint32_t);
int (*get) (const struct __db *, const DBT *, DBT *, uint32_t);
int (*put) (const struct __db *, DBT *, const DBT *, uint32_t);
int (*seq) (const struct __db *, DBT *, DBT *, uint32_t);
int (*sync) (const struct __db *, uint32_t);
void *internal; /* Access method private. */
int (*fd) (const struct __db *);
} DB;
#define HASHMAGIC 0x061561
#define HASHVERSION 2
/* Structure used to pass parameters to the hashing routines. */
typedef struct {
uint32_t bsize; /* bucket size */
uint32_t ffactor; /* fill factor */
uint32_t nelem; /* number of elements */
uint32_t cachesize; /* bytes to cache */
uint32_t /* hash function */
(*hash) (const void *, size_t);
int lorder; /* byte order */
} HASHINFO;
/*
* 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]; \
}
#if defined(__cplusplus)
extern "C" {
#endif
DB *__hash_open (const char *, int, int, const HASHINFO *);
#if defined(__cplusplus)
};
#endif
#endif /* !_DB_H_ */