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stasis-aries-wal/pbl/pbl.h

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Initial revision
2004-06-24 21:10:31 +00:00
#ifndef _PBL_H_
#define _PBL_H_
/*
pbl.h - external include file of library
Copyright (C) 2002 Peter Graf
This file is part of PBL - The Program Base Library.
PBL is free software.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
For more information on the Program Base Library or Peter Graf,
please see: http://mission.base.com/.
$Log$
Compiles on FreeBSD!
2005-03-02 05:46:29 +00:00
Revision 1.2 2005/03/02 05:46:29 sears
Compiles on FreeBSD!
Revision 1.1.1.1 2004/06/24 21:11:33 sears
Need to send laptop in for warranty service, so it's time to put this code into CVS. :)
Vs. the paper version of LLADD, this version has a re-written logger + recovery system. It also includes unit tests and API documentation.
Initial revision
2004-06-24 21:10:31 +00:00
Revision 1.4 2004/06/09 21:27:40 sears
Final CVS checkin before major refactoring.
Revision 1.3 2003/12/11 10:48:16 jim
compiles, not link. added quasi-pincount, shadow pages
Revision 1.2 2003/12/11 09:21:20 jim
update includes
Revision 1.1 2003/12/11 09:10:48 jim
pbl
Revision 1.2 2002/09/12 20:47:18 peter
added the isam file handling to the library
Revision 1.1 2002/09/05 13:44:12 peter
Initial revision
*/
#ifdef __cplusplus
extern "C" {
#endif
/*
* make sure "strings <exe> | grep Id | sort -u" shows the source file versions
*/
static char* _PBL_H_id = "$Id$";
static int _PBL_H_fct() { return( _PBL_H_id ? 0 : _PBL_H_fct() ); }
#include <dirent.h>
Compiles on FreeBSD!
2005-03-02 05:46:29 +00:00
// for size_t
#include <stdio.h>
Initial revision
2004-06-24 21:10:31 +00:00
/*****************************************************************************/
/* #defines */
/*****************************************************************************/
#ifdef _WIN32
/*
* some functions have strange names on windows
*/
#define strcasecmp _stricmp
#define strncasecmp _strnicmp
#define snprintf _snprintf
#else
#ifndef O_BINARY
#define O_BINARY 0
#endif
#endif
#define PBL_ERRSTR_LEN 2048
/** @name B: Files
* list of files of component
* <P>
* <B>FILES</B>
* <UL>
* <LI> <a href="../pbl.h">pbl.h</a> - the include file of the library
* <LI> <a href="../pbl.c">pbl.c</a> - source for the base functions
* <LI> <a href="../pblhash.c">pblhash.c</a> - source file for the
* hash functions
* <LI> <a href="../pblhttst.c">pblhttst.c</a> - source file for the
* hash function test frame
* <LI> <a href="../pblkf.c">pblkf.c</a> - source file for the key
* file functions
* <LI> <a href="../pblkftst.c">pblkftst.c</a> - source file for the
* key file handling test frame
* <LI> <a href="../pblisam.c">pblisam.c</a> - source file for the isam
* file functions
* <LI> <a href="../pbliftst.c">pbliftst.c</a> - source file for the
* isam file handling test frame
* <LI> <a href="../makefile">makefile</a> - a Unix makefile for the
* component
* <LI> <a href="../pblhttstdeb.dsp">pblhttstdeb.dsp</a> - a Microsoft Visual
* Studio 6.0 project file for
* hash table debug
* <LI> <a href="../pblkftstdeb.dsp">pblkftstdeb.dsp</a> - a Microsoft
* Visual Studio 6.0 project file
* for key file debug
* <LI> <a href="../pbliftstdeb.dsp">pbliftstdeb.dsp</a> - a Microsoft Visual
* Studio 6.0 project file for
* isam file debug
* <LI> <a href="../ISAM0001.LOG">ISAM0001.LOG</a> - a test case for the
* isam file handling test frame
* <LI> <a href="../pbl.dxx">pbl.dxx</a> - the source for this document
* </UL>
*/
#define PBL_FILE_LIST
/** @name C: Error codes
* error codes of the pbl library
*
* @field PBL_ERROR_OUT_OF_MEMORY out of memory
* @field PBL_ERROR_EXISTS record already exists
* @field PBL_ERROR_NOT_FOUND record not found
* @field PBL_ERROR_BAD_FILE file structure damaged
* @field PBL_ERROR_PARAM_MODE parameter mode is not valid
* @field PBL_ERROR_PARAM_KEY parameter key is not valid
* @field PBL_ERROR_PARAM_KEYLEN parameter keylen is not valid
* @field PBL_ERROR_PARAM_DATA parameter data is not valid
* @field PBL_ERROR_PARAM_DATALEN parameter datalen is not valid
* @field PBL_ERROR_PARAM_INDEX parameter index is not valid
* @field PBL_ERROR_CREATE file system create error, see errno
* @field PBL_ERROR_OPEN file system open error, see errno
* @field PBL_ERROR_SEEK file system seek error, see errno
* @field PBL_ERROR_READ file system read error, see errno
* @field PBL_ERROR_WRITE file system write error, see errno
* @field PBL_ERROR_PROGRAM an internal error in the code, debug it!!
* @field PBL_ERROR_NOFIT internal error forcing a block split
* @field PBL_ERROR_NOT_ALLOWED file not open for update, operation not allowed
* @field PBL_ERROR_POSITION current record is not positioned
*/
#define PBL_ERROR_BASE 1000
#define PBL_ERROR_OUT_OF_MEMORY ( PBL_ERROR_BASE + 1 )
#define PBL_ERROR_EXISTS ( PBL_ERROR_BASE + 2 )
#define PBL_ERROR_NOT_FOUND ( PBL_ERROR_BASE + 3 )
#define PBL_ERROR_BAD_FILE ( PBL_ERROR_BASE + 4 )
#define PBL_ERROR_PARAM_MODE ( PBL_ERROR_BASE + 5 )
#define PBL_ERROR_PARAM_KEY ( PBL_ERROR_BASE + 6 )
#define PBL_ERROR_PARAM_KEYLEN ( PBL_ERROR_BASE + 7 )
#define PBL_ERROR_PARAM_DATA ( PBL_ERROR_BASE + 8 )
#define PBL_ERROR_PARAM_DATALEN ( PBL_ERROR_BASE + 9 )
#define PBL_ERROR_PARAM_INDEX ( PBL_ERROR_BASE + 10 )
#define PBL_ERROR_CREATE ( PBL_ERROR_BASE + 20 )
#define PBL_ERROR_OPEN ( PBL_ERROR_BASE + 21 )
#define PBL_ERROR_SEEK ( PBL_ERROR_BASE + 22 )
#define PBL_ERROR_READ ( PBL_ERROR_BASE + 23 )
#define PBL_ERROR_WRITE ( PBL_ERROR_BASE + 24 )
#define PBL_ERROR_PROGRAM ( PBL_ERROR_BASE + 30 )
#define PBL_ERROR_NOFIT ( PBL_ERROR_BASE + 31 )
#define PBL_ERROR_NOT_ALLOWED ( PBL_ERROR_BASE + 40 )
#define PBL_ERROR_POSITION ( PBL_ERROR_BASE + 41 )
/** @name D: Definitions for Key File Parameters
* DEFINES FOR PARAMETER <B> mode </B> OF \Ref{pblKfFind}()
* @field PBLEQ any record that is equal
* @field PBLFI first record that is equal
* @field PBLLA last record that is equal
* @field PBLGE last equal or first that is greater
* @field PBLGT first that is greater
* @field PBLLE first equal or last that is smaller
* @field PBLLT last that is smaller
*/
#define PBLEQ 1
#define PBLFI 2
#define PBLLA 3
#define PBLGE 4
#define PBLGT 5
#define PBLLE 6
#define PBLLT 7
/** @name E: Definitions for ISAM Parameters
* DEFINES FOR PARAMETER <B> which </B> OF \Ref{pblIsamGet}()
* @field PBLTHIS get key and keylen of current record
* @field PBLNEXT get key and keylen of next record
* @field PBLPREV get key and keylen of previous record
* @field PBLFIRST get key and keylen of first record
* @field PBLLAST get key and keylen of last record
*/
#define PBLTHIS 1
#define PBLNEXT 2
#define PBLPREV 3
#define PBLFIRST 4
#define PBLLAST 5
/**
* the maximum length of a key of the key file component,
* @doc maximum length of a key, 255 for now
*/
#define PBLKEYLENGTH 255
/**
* maximum data length of data being stored on index blocks of key files,
* @doc maximum length of data stored with an item on the level 0 block, 1024
* @doc data that is longer is stored on data blocks.
*/
#define PBLDATALENGTH 1024
/*****************************************************************************/
/* macros */
/*****************************************************************************/
/*
* The PBL_MEMTRACE define can be used for debugging the library,
* if defined the library will log a line for all memory chunks
* that are allocated for more than 3 minutes into the file ./pblmemtrace.log
*
* This can be used to detect heap memory lost by the code.
* See also function pbl_memtrace_out in pbl.c
*/
/* #define PBL_MEMTRACE */
#ifdef PBL_MEMTRACE
extern void pbl_memtrace_delete( void * data );
extern void pbl_memtrace_out( int checktime );
#define PBL_FREE( ptr ) if( ptr ){ pbl_memtrace_delete( ptr );\
free( ptr ); ptr = 0; }
#else
/**
* make free save against NULL pointers,
* @doc also the parameter ptr is set to NULL
*/
#define PBL_FREE( ptr ) if( ptr ){ free( ptr ); ptr = 0; }
#endif
/**
* macros for linear list handling,
*/
#define PBL_LIST_( Parameters )
/**
* push an element to the beginning of a linear list
*/
#define PBL_LIST_PUSH( HEAD, TAIL, ITEM, NEXT, PREV )\
{\
(ITEM)->PREV = 0;\
if(( (ITEM)->NEXT = (HEAD) ))\
{ (ITEM)->NEXT->PREV = (ITEM); }\
else\
{ (TAIL) = (ITEM); }\
(HEAD) = (ITEM);\
}
/**
* append an element to the end of a linear list
*/
#define PBL_LIST_APPEND( HEAD, TAIL, ITEM, NEXT, PREV )\
PBL_LIST_PUSH( TAIL, HEAD, ITEM, PREV, NEXT )
/**
* remove an element from a linear list
*/
#define PBL_LIST_UNLINK( HEAD, TAIL, ITEM, NEXT, PREV )\
{\
if( (ITEM)->NEXT )\
{ (ITEM)->NEXT->PREV = (ITEM)->PREV; }\
else\
{ (TAIL) = (ITEM)->PREV; }\
if( (ITEM)->PREV )\
{ (ITEM)->PREV->NEXT = (ITEM)->NEXT; }\
else\
{ (HEAD) = (ITEM)->NEXT; }\
}
/*
* SOME MACROS FOR KEY FILE READ FUNCTIONS
*/
/**
* set the current record to the first record of the file
*/
#define pblKfFirst( KF, K, L ) pblKfGetAbs( KF, 0, K, L )
/**
* set the current record to the last record of the file
*/
#define pblKfLast( KF, K, L ) pblKfGetAbs( KF, -1, K, L )
/**
* set the current record to the next record of the file
*/
#define pblKfNext( KF, K, L ) pblKfGetRel( KF, 1, K, L )
/**
* set the current record to the previous record of the file
*/
#define pblKfPrev( KF, K, L ) pblKfGetRel( KF, -1, K, L )
/**
* return the datalen of the current record
*/
#define pblKfThis( KF, K, L ) pblKfGetRel( KF, 0, K, L )
/*****************************************************************************/
/* typedefs */
/*****************************************************************************/
struct pblHashTable_s
{
char * magic;
};
/**
* the hash table type the pblHt* functions are dealing with,
* @doc the details of the structure are hidden from the user
*/
typedef struct pblHashTable_s pblHashTable_t;
struct pblKeyFile_s
{
char * magic;
};
/**
* the key file type the pblKf* functions are dealing with,
* @doc the details of the structure are hidden from the user
*/
typedef struct pblKeyFile_s pblKeyFile_t;
struct pblIsamFile_s
{
char * magic;
};
/**
* the ISAM file type the pblIsam* functions are dealing with,
* @doc the details of the structure are hidden from the user
*/
typedef struct pblIsamFile_s pblIsamFile_t;
/*****************************************************************************/
/* variable declarations */
/*****************************************************************************/
/**
* integer value used for returning error codes
*/
extern int pbl_errno;
/**
* character buffer used for returning error strings
*/
extern char * pbl_errstr;
/*****************************************************************************/
/* function declarations */
/*****************************************************************************/
extern void * pbl_malloc( char * tag, size_t size );
extern void * pbl_malloc0( char * tag, size_t size );
extern void * pbl_memdup( char * tag, void * data, size_t size );
extern void * pbl_mem2dup( char * tag, void * mem1, size_t len1,
void * mem2, size_t len2 );
extern int pbl_memcmplen( void * left, size_t llen,
void * right, size_t rlen );
extern int pbl_memcmp( void * left, size_t llen, void * right, size_t rlen );
extern size_t pbl_memlcpy( void * to, size_t tolen, void * from, size_t n );
extern void pbl_ShortToBuf( unsigned char * buf, int s );
extern int pbl_BufToShort( unsigned char * buf );
extern void pbl_LongToBuf( unsigned char * buf, long l );
extern long pbl_BufToLong( unsigned char * buf );
extern int pbl_LongToVarBuf( unsigned char * buffer, unsigned long value );
extern int pbl_VarBufToLong( unsigned char * buffer, long * value );
extern int pbl_LongSize( unsigned long value );
extern int pbl_VarBufSize( unsigned char * buffer );
extern pblHashTable_t * pblHtCreate( );
extern int pblHtInsert ( pblHashTable_t * h, void * key, size_t keylen,
void * dataptr);
extern void * pblHtLookup ( pblHashTable_t * h, void * key, size_t keylen );
extern void * pblHtFirst ( pblHashTable_t * h );
extern void * pblHtNext ( pblHashTable_t * h );
extern void * pblHtCurrent ( pblHashTable_t * h );
extern void * pblHtCurrentKey ( pblHashTable_t * h );
extern int pblHtRemove ( pblHashTable_t * h, void * key, size_t keylen );
extern int pblHtDelete ( pblHashTable_t * h );
/*
* FUNCTIONS ON KEY FILES
*/
int pblKfInit ( int nblocks );
extern pblKeyFile_t * pblKfCreate( char * path, void * filesettag );
extern pblKeyFile_t * pblKfOpen ( char * path, int update, void * filesettag );
extern int pblKfClose ( pblKeyFile_t * k );
extern int pblKfFlush ( pblKeyFile_t * k );
extern int pblKfStartTransaction( pblKeyFile_t * k );
extern int pblKfCommit( pblKeyFile_t * k, int rollback );
extern int pblKfSavePosition( pblKeyFile_t * k );
extern int pblKfRestorePosition( pblKeyFile_t * k );
extern void pblKfSetCompareFunction(
pblKeyFile_t * k, /** key file to set compare function for */
int ( *keycompare ) /** compare function to set */
(
void* left, /** "left" buffer for compare */ size_t llen, /** length of that buffer */ void* right, /** "right" buffer for compare */ size_t rlen /** length of that buffer */
)
);
/*
* WRITE FUNCTIONS ON RECORDS, DELETE AND UPDATE WORK ON CURRENT RECORD
*/
extern int pblKfInsert(
pblKeyFile_t * k,
unsigned char * key,
int keylen,
unsigned char * data,
long datalen
);
extern int pblKfDelete( pblKeyFile_t * k );
extern int pblKfUpdate(
pblKeyFile_t * k,
unsigned char * data,
long datalen
);
/*
* KEY FILE READ FUNCTIONS ON RECORDS
*/
extern long pblKfFind(
pblKeyFile_t * k,
int mode,
unsigned char * skey,
int skeylen,
unsigned char * okey,
int * okeylen
);
extern long pblKfRead(
pblKeyFile_t * k,
unsigned char * data,
long datalen
);
/*
* FUNCTIONS ACTUALLY ONLY TO BE USED THROUGH THE MAKROS DEFINED BELOW
*
* however, the functions work, but they are not very fast
*
* pblKfGetRel - positions relative to the current record to any other
* record of the file, interface is like pblKfNext
*
* pblKfGetAbs - positions absolute to the absindex 'th record of the file,
* -1L means last, interface is like pblKfFirst
*/
extern long pblKfGetRel( pblKeyFile_t * k, long relindex,
char *okey, int *okeylen);
extern long pblKfGetAbs( pblKeyFile_t * k, long absindex,
char *okey, int *okeylen);
/*
* FUNCTIONS ON ISAM FILES
*/
extern int pblIsamClose( pblIsamFile_t * isamfile );
extern int pblIsamFlush( pblIsamFile_t * isamfile );
extern int pblIsamDelete( pblIsamFile_t * isamfile );
extern pblIsamFile_t * pblIsamOpen(
char * path,
int update,
void * filesettag,
int nkeys,
char ** keyfilenames,
int * keydup
);
extern int pblIsamInsert(
pblIsamFile_t * isamfile,
unsigned char * allkeys,
int allkeyslen,
unsigned char * data,
long datalen
);
extern int pblIsamFind(
pblIsamFile_t * isamfile,
int mode,
int index,
unsigned char * skey,
int skeylen,
unsigned char * okey
);
extern int pblIsamGet(
pblIsamFile_t * isamfile,
int which,
int index,
unsigned char * okey
);
extern int pblIsamReadKey(
pblIsamFile_t * isamfile,
int index,
unsigned char * okey
);
extern long pblIsamReadDatalen( pblIsamFile_t * isamfile );
extern long pblIsamReadData(
pblIsamFile_t * isamfile,
unsigned char * buffer,
long bufferlen
);
extern long pblIsamUpdateData(
pblIsamFile_t * isamfile,
unsigned char * data,
long datalen
);
extern int pblIsamUpdateKey(
pblIsamFile_t * isamfile,
int index,
unsigned char * ukey,
int ukeylen
);
extern int pblIsamStartTransaction( int nfiles, pblIsamFile_t ** isamfiles );
extern int pblIsamCommit( int nfiles, pblIsamFile_t ** isamfiles, int rollback);
#ifdef __cplusplus
}
#endif
#endif
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