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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

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Overview
Comment:Add the xGetLastError() member function to the sqlite3_vfs structure. It is neither called nor implemented at this point. (CVS 5192)
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Files: files | file ages | folders
SHA1: b8f1da52c303de20d40aa20a7a031728d5d69af5
User & Date: danielk1977 2008-06-06 15:49:30
Context
2008-06-06
16:14
Avoid attempting to delete the journal file of a temporary pager when closing the pager. It will be deleted automatically by the OS layer. (CVS 5193) check-in: de8b87d6 user: danielk1977 tags: trunk
15:49
Add the xGetLastError() member function to the sqlite3_vfs structure. It is neither called nor implemented at this point. (CVS 5192) check-in: b8f1da52 user: danielk1977 tags: trunk
15:04
Remove the subroutine return stack from the VDBE. Return addresses for subroutines are now stored in registers. (CVS 5191) check-in: ef1956ee user: drh tags: trunk
Changes
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Changes to src/os_unix.c. 

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**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
******************************************************************************
**
** This file contains code that is specific to Unix systems.
**
** $Id: os_unix.c,v 1.185 2008/06/06 11:11:26 danielk1977 Exp $
*/
#include "sqliteInt.h"
#if OS_UNIX              /* This file is used on unix only */

/* #define SQLITE_ENABLE_LOCKING_STYLE 0 */

/*
................................................................................
#ifdef SQLITE_TEST
  if( sqlite3_current_time ){
    *prNow = sqlite3_current_time/86400.0 + 2440587.5;
  }
#endif
  return 0;
}





/*
** Return a pointer to the sqlite3DefaultVfs structure.   We use
** a function rather than give the structure global scope because
** some compilers (MSVC) do not allow forward declarations of
** initialized structures.
*/
................................................................................
    unixFullPathname,   /* xFullPathname */
    unixDlOpen,         /* xDlOpen */
    unixDlError,        /* xDlError */
    unixDlSym,          /* xDlSym */
    unixDlClose,        /* xDlClose */
    unixRandomness,     /* xRandomness */
    unixSleep,          /* xSleep */
    unixCurrentTime     /* xCurrentTime */

  };
  
  return &unixVfs;
}
 
#endif /* OS_UNIX */








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**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
******************************************************************************
**
** This file contains code that is specific to Unix systems.
**
** $Id: os_unix.c,v 1.186 2008/06/06 15:49:30 danielk1977 Exp $
*/
#include "sqliteInt.h"
#if OS_UNIX              /* This file is used on unix only */

/* #define SQLITE_ENABLE_LOCKING_STYLE 0 */

/*
................................................................................
#ifdef SQLITE_TEST
  if( sqlite3_current_time ){
    *prNow = sqlite3_current_time/86400.0 + 2440587.5;
  }
#endif
  return 0;
}

static int unixGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
  return 0;
}

/*
** Return a pointer to the sqlite3DefaultVfs structure.   We use
** a function rather than give the structure global scope because
** some compilers (MSVC) do not allow forward declarations of
** initialized structures.
*/
................................................................................
    unixFullPathname,   /* xFullPathname */
    unixDlOpen,         /* xDlOpen */
    unixDlError,        /* xDlError */
    unixDlSym,          /* xDlSym */
    unixDlClose,        /* xDlClose */
    unixRandomness,     /* xRandomness */
    unixSleep,          /* xSleep */
    unixCurrentTime,    /* xCurrentTime */
    unixGetLastError    /* xGetLastError */
  };
  
  return &unixVfs;
}
 
#endif /* OS_UNIX */

Changes to src/os_win.c. 

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**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
******************************************************************************
**
** This file contains code that is specific to windows.
**
** $Id: os_win.c,v 1.125 2008/06/06 11:11:26 danielk1977 Exp $
*/
#include "sqliteInt.h"
#if OS_WIN               /* This file is used for windows only */


/*
** A Note About Memory Allocation:
................................................................................
  if( sqlite3_current_time ){
    *prNow = sqlite3_current_time/86400.0 + 2440587.5;
  }
#endif
  return 0;
}





/*
** Return a pointer to the sqlite3DefaultVfs structure.   We use
** a function rather than give the structure global scope because
** some compilers (MSVC) do not allow forward declarations of
** initialized structures.
*/
................................................................................
  static sqlite3_vfs winVfs = {
    1,                 /* iVersion */
    sizeof(winFile),   /* szOsFile */
    MAX_PATH,          /* mxPathname */
    0,                 /* pNext */
    "win32",           /* zName */
    0,                 /* pAppData */
  
    winOpen,           /* xOpen */
    winDelete,         /* xDelete */
    winAccess,         /* xAccess */
    winFullPathname,   /* xFullPathname */
    winDlOpen,         /* xDlOpen */
    winDlError,        /* xDlError */
    winDlSym,          /* xDlSym */
    winDlClose,        /* xDlClose */
    winRandomness,     /* xRandomness */
    winSleep,          /* xSleep */
    winCurrentTime     /* xCurrentTime */

  };
  
  return &winVfs;
}

#endif /* OS_WIN */








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**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
******************************************************************************
**
** This file contains code that is specific to windows.
**
** $Id: os_win.c,v 1.126 2008/06/06 15:49:30 danielk1977 Exp $
*/
#include "sqliteInt.h"
#if OS_WIN               /* This file is used for windows only */


/*
** A Note About Memory Allocation:
................................................................................
  if( sqlite3_current_time ){
    *prNow = sqlite3_current_time/86400.0 + 2440587.5;
  }
#endif
  return 0;
}

static int winGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
  return 0;
}

/*
** Return a pointer to the sqlite3DefaultVfs structure.   We use
** a function rather than give the structure global scope because
** some compilers (MSVC) do not allow forward declarations of
** initialized structures.
*/
................................................................................
  static sqlite3_vfs winVfs = {
    1,                 /* iVersion */
    sizeof(winFile),   /* szOsFile */
    MAX_PATH,          /* mxPathname */
    0,                 /* pNext */
    "win32",           /* zName */
    0,                 /* pAppData */
 
    winOpen,           /* xOpen */
    winDelete,         /* xDelete */
    winAccess,         /* xAccess */
    winFullPathname,   /* xFullPathname */
    winDlOpen,         /* xDlOpen */
    winDlError,        /* xDlError */
    winDlSym,          /* xDlSym */
    winDlClose,        /* xDlClose */
    winRandomness,     /* xRandomness */
    winSleep,          /* xSleep */
    winCurrentTime,    /* xCurrentTime */
    winGetLastError    /* xGetLastError */
  };

  return &winVfs;
}

#endif /* OS_WIN */

Changes to src/sqlite.h.in. 

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** on how SQLite interfaces are suppose to operate.
**
** The name of this file under configuration management is "sqlite.h.in".
** The makefile makes some minor changes to this file (such as inserting
** the version number) and changes its name to "sqlite3.h" as
** part of the build process.
**
** @(#) $Id: sqlite.h.in,v 1.321 2008/06/06 11:11:26 danielk1977 Exp $
*/
#ifndef _SQLITE3_H_
#define _SQLITE3_H_
#include <stdarg.h>     /* Needed for the definition of va_list */

/*
** Make sure we can call this stuff from C++.
................................................................................
  void *(*xDlOpen)(sqlite3_vfs*, const char *zFilename);
  void (*xDlError)(sqlite3_vfs*, int nByte, char *zErrMsg);
  void *(*xDlSym)(sqlite3_vfs*,void*, const char *zSymbol);
  void (*xDlClose)(sqlite3_vfs*, void*);
  int (*xRandomness)(sqlite3_vfs*, int nByte, char *zOut);
  int (*xSleep)(sqlite3_vfs*, int microseconds);
  int (*xCurrentTime)(sqlite3_vfs*, double*);

  /* New fields may be appended in figure versions.  The iVersion
  ** value will increment whenever this happens. */
};

/*
** CAPI3REF: Flags for the xAccess VFS method {F11190}
**








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** on how SQLite interfaces are suppose to operate.
**
** The name of this file under configuration management is "sqlite.h.in".
** The makefile makes some minor changes to this file (such as inserting
** the version number) and changes its name to "sqlite3.h" as
** part of the build process.
**
** @(#) $Id: sqlite.h.in,v 1.322 2008/06/06 15:49:30 danielk1977 Exp $
*/
#ifndef _SQLITE3_H_
#define _SQLITE3_H_
#include <stdarg.h>     /* Needed for the definition of va_list */

/*
** Make sure we can call this stuff from C++.
................................................................................
  void *(*xDlOpen)(sqlite3_vfs*, const char *zFilename);
  void (*xDlError)(sqlite3_vfs*, int nByte, char *zErrMsg);
  void *(*xDlSym)(sqlite3_vfs*,void*, const char *zSymbol);
  void (*xDlClose)(sqlite3_vfs*, void*);
  int (*xRandomness)(sqlite3_vfs*, int nByte, char *zOut);
  int (*xSleep)(sqlite3_vfs*, int microseconds);
  int (*xCurrentTime)(sqlite3_vfs*, double*);
  int (*xGetLastError)(sqlite3_vfs*, int, char *);
  /* New fields may be appended in figure versions.  The iVersion
  ** value will increment whenever this happens. */
};

/*
** CAPI3REF: Flags for the xAccess VFS method {F11190}
**

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