📄 db_185.in
字号:
/*- * See the file LICENSE for redistribution information. * * Copyright (c) 1996-2002 * Sleepycat Software. All rights reserved. *//* * 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. 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. * * $Id: db_185.in,v 11.8 2002/01/11 15:52:24 bostic Exp $ */#ifndef _DB_185_H_#define _DB_185_H_#include <sys/types.h>#include <limits.h>/* * XXX * Handle function prototypes and the keyword "const". This steps on name * space that DB doesn't control, but all of the other solutions are worse. */#undef __P#if defined(__STDC__) || defined(__cplusplus)#define __P(protos) protos /* ANSI C prototypes */#else#define const#define __P(protos) () /* K&R C preprocessor */#endif#define RET_ERROR -1 /* Return values. */#define RET_SUCCESS 0#define RET_SPECIAL 1#ifndef __BIT_TYPES_DEFINED__#define __BIT_TYPES_DEFINED__@u_int8_decl@@int16_decl@@u_int16_decl@@int32_decl@@u_int32_decl@#endif/* * XXX * SGI/IRIX already has a pgno_t. */#ifdef sgi#define pgno_t db_pgno_t#endif#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;/* 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_int32_t flags; u_int32_t cachesize; /* bytes to cache */ u_int32_t maxkeypage; /* maximum keys per page */ u_int32_t minkeypage; /* minimum keys per page */ u_int32_t 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_int32_t bsize; /* bucket size */ u_int32_t ffactor; /* fill factor */ u_int32_t nelem; /* number of elements */ u_int32_t 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_int32_t flags; u_int32_t cachesize; /* bytes to cache */ u_int32_t 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;/* Re-define the user's dbopen calls. */#define dbopen __db185_open@DB_VERSION_UNIQUE_NAME@#endif /* !_DB_185_H_ */
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -