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Overview
Comment:Begin moving WAL-specific I/O into the VFS. This checkin contains VFS infrastructure but it is untested and is not yet hooked up to the WAL. The version number is bumped to 3.7.0 because of the VFS extension.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | wal
Files: files | file ages | folders
SHA1: f5e615c28c7035a7e6d896790b51cf9bc7371d5f
User & Date: drh 2010-04-26 00:04:55
Context
2010-04-26
00:19
Change the names of the log.c and log.h source files to wal.c and wal.h. check-in: 56fe5d76 user: drh tags: wal
00:04
Begin moving WAL-specific I/O into the VFS. This checkin contains VFS infrastructure but it is untested and is not yet hooked up to the WAL. The version number is bumped to 3.7.0 because of the VFS extension. check-in: f5e615c2 user: drh tags: wal
2010-04-24
19:07
Add comment explaining checksum mechanism. check-in: 3e9ef515 user: dan tags: wal
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to VERSION.

1
3.6.23
|
1
3.7.0

Changes to src/os_os2.c.

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    os2DlError,        /* xDlError */
    os2DlSym,          /* xDlSym */
    os2DlClose,        /* xDlClose */
    os2Randomness,     /* xRandomness */
    os2Sleep,          /* xSleep */
    os2CurrentTime,    /* xCurrentTime */
    os2GetLastError    /* xGetLastError */









  };
  sqlite3_vfs_register(&os2Vfs, 1);
  initUconvObjects();
  return SQLITE_OK;
}
int sqlite3_os_end(void){
  freeUconvObjects();
  return SQLITE_OK;
}

#endif /* SQLITE_OS_OS2 */







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    os2DlError,        /* xDlError */
    os2DlSym,          /* xDlSym */
    os2DlClose,        /* xDlClose */
    os2Randomness,     /* xRandomness */
    os2Sleep,          /* xSleep */
    os2CurrentTime,    /* xCurrentTime */
    os2GetLastError    /* xGetLastError */
    0,                 /* xShmOpen */
    0,                 /* xShmSize */
    0,                 /* xShmPush */
    0,                 /* xShmPull */
    0,                 /* xShmLock */
    0,                 /* xShmClose */
    0,                 /* xShmDelete */
    0,                 /* xRename */
    0,                 /* xCurrentTimeInt64 */
  };
  sqlite3_vfs_register(&os2Vfs, 1);
  initUconvObjects();
  return SQLITE_OK;
}
int sqlite3_os_end(void){
  freeUconvObjects();
  return SQLITE_OK;
}

#endif /* SQLITE_OS_OS2 */

Changes to src/os_unix.c.

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#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <sys/time.h>
#include <errno.h>


#if SQLITE_ENABLE_LOCKING_STYLE
# include <sys/ioctl.h>
# if OS_VXWORKS
#  include <semaphore.h>
#  include <limits.h>
# else
................................................................................
*/
static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){
  UNUSED_PARAMETER(NotUsed);
  UNUSED_PARAMETER(NotUsed2);
  UNUSED_PARAMETER(NotUsed3);
  return 0;
}

























































































































































/*
************************ End of sqlite3_vfs methods ***************************
******************************************************************************/

/******************************************************************************
************************** Begin Proxy Locking ********************************
................................................................................
  ** Most finders simply return a pointer to a fixed sqlite3_io_methods
  ** object.  But the "autolockIoFinder" available on MacOSX does a little
  ** more than that; it looks at the filesystem type that hosts the 
  ** database file and tries to choose an locking method appropriate for
  ** that filesystem time.
  */
  #define UNIXVFS(VFSNAME, FINDER) {                        \
    1,                    /* iVersion */                    \
    sizeof(unixFile),     /* szOsFile */                    \
    MAX_PATHNAME,         /* mxPathname */                  \
    0,                    /* pNext */                       \
    VFSNAME,              /* zName */                       \
    (void*)&FINDER,       /* pAppData */                    \
    unixOpen,             /* xOpen */                       \
    unixDelete,           /* xDelete */                     \
................................................................................
    unixDlOpen,           /* xDlOpen */                     \
    unixDlError,          /* xDlError */                    \
    unixDlSym,            /* xDlSym */                      \
    unixDlClose,          /* xDlClose */                    \
    unixRandomness,       /* xRandomness */                 \
    unixSleep,            /* xSleep */                      \
    unixCurrentTime,      /* xCurrentTime */                \
    unixGetLastError      /* xGetLastError */               \









  }

  /*
  ** All default VFSes for unix are contained in the following array.
  **
  ** Note that the sqlite3_vfs.pNext field of the VFS object is modified
  ** by the SQLite core when the VFS is registered.  So the following







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#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <sys/time.h>
#include <errno.h>
#include <sys/mman.h>

#if SQLITE_ENABLE_LOCKING_STYLE
# include <sys/ioctl.h>
# if OS_VXWORKS
#  include <semaphore.h>
#  include <limits.h>
# else
................................................................................
*/
static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){
  UNUSED_PARAMETER(NotUsed);
  UNUSED_PARAMETER(NotUsed2);
  UNUSED_PARAMETER(NotUsed3);
  return 0;
}

/*
** Structure used internally by this VFS to record the state of an
** open shared memory segment.
*/
struct unixShm {
  sqlite3_vfs *pVfs;   /* VFS that opened this shared-memory segment */
  int size;            /* Size of the shared memory area */
  char *pBuf;          /* Pointer to the beginning */
  unixFile fd;         /* The open file descriptor */
};

/*
** Close a shared-memory segment
*/
static int unixShmClose(sqlite3_shm *pSharedMem){
  struct unixShm *p = (struct unixShm*)pSharedMem;
  if( p && p->pVfs ){
    if( p->pBuf ){
      munmap(p->pBuf, p->size);
    }
    if( p->fd.pMethod ){
      p->fd.pMethod->xClose((sqlite3_file*)&p->fd);
    }
    memset(p, 0, sizeof(*p));
    sqlite3_free(p);
  }
  return SQLITE_OK;
}

/*
** Size increment by which shared memory grows
*/
#define SQLITE_UNIX_SHM_INCR  4096

/*
** Open a shared-memory area.  This implementation uses mmapped files.
*/
static int unixShmOpen(
  sqlite3_vfs *pVfs,    /* The VFS */
  const char *zName,    /* Name of file to mmap */
  sqlite3_shm **pShm    /* Write the unixShm object created here */
){
  struct unixShm *p = 0;
  int rc;
  int outFlags;
  struct stat sStat;

  p = sqlite3_malloc( sizeof(*p) );
  *pShm = (sqlite3_shm*)p;
  if( p==0 ) return SQLITE_NOMEM;
  memset(p, 0, sizeof(*p));
  p->pVfs = pVfs;
  rc = pVfs->xOpen(pVfs, zName, (sqlite3_file*)&p->fd,
                   SQLITE_OPEN_READWRITE | SQLITE_OPEN_MAIN_JOURNAL,
                   &outFlags);
  if( rc!=SQLITE_OK ) goto shm_open_err;

  rc = fstat(p->fd.h, &sStat);
  if( rc!=0 ) goto shm_open_err;
  if( sStat.st_size<SQLITE_UNIX_SHM_INCR ){
    rc = ftruncate(p->fd.h, SQLITE_UNIX_SHM_INCR);
    if( rc!=0 ) goto shm_open_err;
    p->size = SQLITE_UNIX_SHM_INCR;
  }else{
    p->size = sStat.st_size;
  }

  /* Map the file. */
  p->pBuf = mmap(0, p->size, PROT_READ|PROT_WRITE, MAP_SHARED, p->fd.h, 0);
  if( p->pBuf==MAP_FAILED ){
    rc = SQLITE_IOERR;
    goto shm_open_err;
  }
  return SQLITE_OK;

shm_open_err:
  unixShmClose((sqlite3_shm*)p);
  *pShm = 0;
  return rc;
}

/*
** Query and/or changes the size of a shared-memory segment.
** The reqSize parameter is the new size of the segment, or -1 to
** do just a query.  The size of the segment after resizing is
** written into pNewSize.  The start of the shared memory buffer
** is stored in **ppBuffer.
*/
static int unixShmSize(
  sqlite3_shm *pSharedMem,  /* Pointer returned by unixShmOpen() */
  int reqSize,              /* Requested size.  -1 for query only */
  int *pNewSize,            /* Write new size here */
  char **ppBuf              /* Write new buffer origin here */
){
  struct unixShm *p = (struct unixShm*)pSharedMem;
  int rc = SQLITE_OK;

  if( reqSize>=0 ){
    reqSize = (reqSize + SQLITE_UNIX_SHM_INCR - 1)/SQLITE_UNIX_SHM_INCR;
    reqSize *= SQLITE_UNIX_SHM_INCR;
    if( reqSize!=p->size ){
      munmap(p->pBuf, p->size);
      rc = ftruncate(p->fd.h, reqSize);
      if( rc ){
        p->pBuf = 0;
        p->size = 0;
      }else{
        p->pBuf = mmap(0, reqSize, PROT_READ|PROT_WRITE, MAP_SHARED, p->fd.h,0);
        p->size = p->pBuf ? reqSize : 0;
      }
    }
  }
  *pNewSize = p->size;
  *ppBuf = p->pBuf;
  return rc;
}

/*
** Create or release a lock on shared memory.
*/
static int unixShmLock(
  sqlite3_shm *pSharedMem,   /* Pointer from unixShmOpen() */
  int lockType,              /* _RDLK, _WRLK, or _UNLK, possibly ORed _BLOCK */
  int ofst,                  /* Start of lock region */
  int nByte                  /* Size of lock region in bytes */
){
  struct unixShm *p = (struct unixShm*)pSharedMem;
  struct flock f;
  int op;
  int rc;
  
  f.l_whence = SEEK_SET;
  f.l_start = ofst;
  f.l_len = nByte;
  switch( lockType & 0x07 ){
    case SQLITE_SHM_RDLK:  f.l_type = F_RDLCK;   break;
    case SQLITE_SHM_WRLK:  f.l_type = F_WRLCK;   break;
    case SQLITE_SHM_UNLK:  f.l_type = F_UNLCK;   break;
  }
  op = (lockType & 0x08)!=0 ? F_SETLKW : F_SETLK;
  rc = fcntl(p->fd.h, op, &f);
  return (rc==0) ? SQLITE_OK : SQLITE_BUSY;
}

/*
** Delete a shared-memory segment from the system.
*/
static int unixShmDelete(sqlite3_vfs *pVfs, const char *zName){
  return pVfs->xDelete(pVfs, zName, 0);
}


/*
************************ End of sqlite3_vfs methods ***************************
******************************************************************************/

/******************************************************************************
************************** Begin Proxy Locking ********************************
................................................................................
  ** Most finders simply return a pointer to a fixed sqlite3_io_methods
  ** object.  But the "autolockIoFinder" available on MacOSX does a little
  ** more than that; it looks at the filesystem type that hosts the 
  ** database file and tries to choose an locking method appropriate for
  ** that filesystem time.
  */
  #define UNIXVFS(VFSNAME, FINDER) {                        \
    2,                    /* iVersion */                    \
    sizeof(unixFile),     /* szOsFile */                    \
    MAX_PATHNAME,         /* mxPathname */                  \
    0,                    /* pNext */                       \
    VFSNAME,              /* zName */                       \
    (void*)&FINDER,       /* pAppData */                    \
    unixOpen,             /* xOpen */                       \
    unixDelete,           /* xDelete */                     \
................................................................................
    unixDlOpen,           /* xDlOpen */                     \
    unixDlError,          /* xDlError */                    \
    unixDlSym,            /* xDlSym */                      \
    unixDlClose,          /* xDlClose */                    \
    unixRandomness,       /* xRandomness */                 \
    unixSleep,            /* xSleep */                      \
    unixCurrentTime,      /* xCurrentTime */                \
    unixGetLastError,     /* xGetLastError */               \
    unixShmOpen,          /* xShmOpen */                    \
    unixShmSize,          /* xShmSize */                    \
    0,                    /* xShmPush */                    \
    0,                    /* xShmPull */                    \
    unixShmLock,          /* xShmLock */                    \
    unixShmClose,         /* xShmClose */                   \
    unixShmDelete,        /* xShmDelete */                  \
    0,                    /* xRename */                     \
    0,                    /* xCurrentTimeInt64 */           \
  }

  /*
  ** All default VFSes for unix are contained in the following array.
  **
  ** Note that the sqlite3_vfs.pNext field of the VFS object is modified
  ** by the SQLite core when the VFS is registered.  So the following

Changes to src/os_win.c.

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    winDlError,        /* xDlError */
    winDlSym,          /* xDlSym */
    winDlClose,        /* xDlClose */
    winRandomness,     /* xRandomness */
    winSleep,          /* xSleep */
    winCurrentTime,    /* xCurrentTime */
    winGetLastError    /* xGetLastError */









  };

  sqlite3_vfs_register(&winVfs, 1);
  return SQLITE_OK; 
}
int sqlite3_os_end(void){ 
  return SQLITE_OK;
}

#endif /* SQLITE_OS_WIN */







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    winDlError,        /* xDlError */
    winDlSym,          /* xDlSym */
    winDlClose,        /* xDlClose */
    winRandomness,     /* xRandomness */
    winSleep,          /* xSleep */
    winCurrentTime,    /* xCurrentTime */
    winGetLastError    /* xGetLastError */
    0,                 /* xShmOpen */
    0,                 /* xShmSize */
    0,                 /* xShmPush */
    0,                 /* xShmPull */
    0,                 /* xShmLock */
    0,                 /* xShmClose */
    0,                 /* xShmDelete */
    0,                 /* xRename */
    0,                 /* xCurrentTimeInt64 */
  };

  sqlite3_vfs_register(&winVfs, 1);
  return SQLITE_OK; 
}
int sqlite3_os_end(void){ 
  return SQLITE_OK;
}

#endif /* SQLITE_OS_WIN */

Changes to src/sqlite.h.in.

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** the actual number of bytes of randomness obtained.
** The xSleep() method causes the calling thread to sleep for at
** least the number of microseconds given.  The xCurrentTime()
** method returns a Julian Day Number for the current date and time.
**
*/
typedef struct sqlite3_vfs sqlite3_vfs;

struct sqlite3_vfs {
  int iVersion;            /* Structure version number */
  int szOsFile;            /* Size of subclassed sqlite3_file */
  int mxPathname;          /* Maximum file pathname length */
  sqlite3_vfs *pNext;      /* Next registered VFS */
  const char *zName;       /* Name of this virtual file system */
  void *pAppData;          /* Pointer to application-specific data */
  int (*xOpen)(sqlite3_vfs*, const char *zName, sqlite3_file*,
               int flags, int *pOutFlags);
................................................................................
  void (*xDlError)(sqlite3_vfs*, int nByte, char *zErrMsg);
  void (*(*xDlSym)(sqlite3_vfs*,void*, const char *zSymbol))(void);
  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
**
** These integer constants can be used as the third parameter to
** the xAccess method of an [sqlite3_vfs] object.  They determine
................................................................................
** With SQLITE_ACCESS_READ, the xAccess method
** checks whether the file is readable.
*/
#define SQLITE_ACCESS_EXISTS    0
#define SQLITE_ACCESS_READWRITE 1
#define SQLITE_ACCESS_READ      2

















/*
** CAPI3REF: Initialize The SQLite Library
**
** ^The sqlite3_initialize() routine initializes the
** SQLite library.  ^The sqlite3_shutdown() routine
** deallocates any resources that were allocated by sqlite3_initialize().
** These routines are designed to aid in process initialization and







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** the actual number of bytes of randomness obtained.
** The xSleep() method causes the calling thread to sleep for at
** least the number of microseconds given.  The xCurrentTime()
** method returns a Julian Day Number for the current date and time.
**
*/
typedef struct sqlite3_vfs sqlite3_vfs;
typedef struct sqlite3_shm sqlite3_shm;
struct sqlite3_vfs {
  int iVersion;            /* Structure version number (currently 2) */
  int szOsFile;            /* Size of subclassed sqlite3_file */
  int mxPathname;          /* Maximum file pathname length */
  sqlite3_vfs *pNext;      /* Next registered VFS */
  const char *zName;       /* Name of this virtual file system */
  void *pAppData;          /* Pointer to application-specific data */
  int (*xOpen)(sqlite3_vfs*, const char *zName, sqlite3_file*,
               int flags, int *pOutFlags);
................................................................................
  void (*xDlError)(sqlite3_vfs*, int nByte, char *zErrMsg);
  void (*(*xDlSym)(sqlite3_vfs*,void*, const char *zSymbol))(void);
  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 *);
  /*
  ** The methods above are in version 1 of the sqlite_vfs object
  ** definition.  Those that follow are added in version 2 or later
  */
  int (*xShmOpen)(sqlite3_vfs*, const char *zName, sqlite3_shm**);
  int (*xShmSize)(sqlite3_shm*, int reqSize, int *pNewSize, char **);
  int (*xShmPush)(sqlite3_shm*);
  int (*xShmPull)(sqlite3_shm*);
  int (*xShmLock)(sqlite3_shm*, int lockType, int ofst, int nByte);
  int (*xShmClose)(sqlite3_shm*);
  int (*xShmDelete)(sqlite3_vfs*, const char *zName);
  int (*xRename)(sqlite3_vfs*, const char *zOld, const char *zNew, int dirSync);
  int (*xCurrentTimeInt64)(sqlite3_vfs*, sqlite3_int64*);
  /*
  ** The methods above are in versions 1 and 2 of the sqlite_vfs object.
  ** New fields may be appended in figure versions.  The iVersion
  ** value will increment whenever this happens. 
  */
};

/*
** CAPI3REF: Flags for the xAccess VFS method
**
** These integer constants can be used as the third parameter to
** the xAccess method of an [sqlite3_vfs] object.  They determine
................................................................................
** With SQLITE_ACCESS_READ, the xAccess method
** checks whether the file is readable.
*/
#define SQLITE_ACCESS_EXISTS    0
#define SQLITE_ACCESS_READWRITE 1
#define SQLITE_ACCESS_READ      2

/*
** CAPI3REF: Flags for the xShmLock VFS method
**
** These integer constants can be used as the second parameter to
** the xShmLock method of an [sqlite3_vfs] object.  They determine
** the specific locking action.  Exactly one of the first three
** values must be used ini the lockType parameter.  The fourth
** value (SQLITE_SHM_BLOCK) can optionally be ORed into the lockType
** parameter to cause the thread to block until the lock becomes
** available.
*/
#define SQLITE_SHM_RDLK   0x01
#define SQLITE_SHM_WRLK   0x02
#define SQLITE_SHM_UNLK   0x04
#define SQLITE_SHM_BLOCK  0x08

/*
** CAPI3REF: Initialize The SQLite Library
**
** ^The sqlite3_initialize() routine initializes the
** SQLite library.  ^The sqlite3_shutdown() routine
** deallocates any resources that were allocated by sqlite3_initialize().
** These routines are designed to aid in process initialization and

Changes to src/test6.c.

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    cfFullPathname,       /* xFullPathname */
    cfDlOpen,             /* xDlOpen */
    cfDlError,            /* xDlError */
    cfDlSym,              /* xDlSym */
    cfDlClose,            /* xDlClose */
    cfRandomness,         /* xRandomness */
    cfSleep,              /* xSleep */
    cfCurrentTime         /* xCurrentTime */









  };

  if( objc!=2 ){
    Tcl_WrongNumArgs(interp, 1, objv, "ENABLE");
    return TCL_ERROR;
  }








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    cfFullPathname,       /* xFullPathname */
    cfDlOpen,             /* xDlOpen */
    cfDlError,            /* xDlError */
    cfDlSym,              /* xDlSym */
    cfDlClose,            /* xDlClose */
    cfRandomness,         /* xRandomness */
    cfSleep,              /* xSleep */
    cfCurrentTime,        /* xCurrentTime */
    0,                    /* xShmOpen */
    0,                    /* xShmSize */
    0,                    /* xShmPush */
    0,                    /* xShmPull */
    0,                    /* xShmLock */
    0,                    /* xShmClose */
    0,                    /* xShmDelete */
    0,                    /* xRename */
    0                     /* xCurrentTimeInt64 */
  };

  if( objc!=2 ){
    Tcl_WrongNumArgs(interp, 1, objv, "ENABLE");
    return TCL_ERROR;
  }

Changes to src/test_demovfs.c.

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    demoFullPathname,             /* xFullPathname */
    demoDlOpen,                   /* xDlOpen */
    demoDlError,                  /* xDlError */
    demoDlSym,                    /* xDlSym */
    demoDlClose,                  /* xDlClose */
    demoRandomness,               /* xRandomness */
    demoSleep,                    /* xSleep */
    demoCurrentTime               /* xCurrentTime */









  };
  return &demovfs;
}

#endif /* !defined(SQLITE_TEST) || defined(SQLITE_OS_UNIX) */









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    demoFullPathname,             /* xFullPathname */
    demoDlOpen,                   /* xDlOpen */
    demoDlError,                  /* xDlError */
    demoDlSym,                    /* xDlSym */
    demoDlClose,                  /* xDlClose */
    demoRandomness,               /* xRandomness */
    demoSleep,                    /* xSleep */
    demoCurrentTime,              /* xCurrentTime */
    0,                            /* xShmOpen */
    0,                            /* xShmSize */
    0,                            /* xShmPush */
    0,                            /* xShmPull */
    0,                            /* xShmLock */
    0,                            /* xShmClose */
    0,                            /* xShmDelete */
    0,                            /* xRename */
    0                             /* xCurrentTimeInt64 */
  };
  return &demovfs;
}

#endif /* !defined(SQLITE_TEST) || defined(SQLITE_OS_UNIX) */


Changes to src/test_devsym.c.

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  0,                        /* xDlOpen */
  0,                        /* xDlError */
  0,                        /* xDlSym */
  0,                        /* xDlClose */
#endif /* SQLITE_OMIT_LOAD_EXTENSION */
  devsymRandomness,         /* xRandomness */
  devsymSleep,              /* xSleep */
  devsymCurrentTime         /* xCurrentTime */









};

static sqlite3_io_methods devsym_io_methods = {
  1,                            /* iVersion */
  devsymClose,                      /* xClose */
  devsymRead,                       /* xRead */
  devsymWrite,                      /* xWrite */







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  0,                        /* xDlOpen */
  0,                        /* xDlError */
  0,                        /* xDlSym */
  0,                        /* xDlClose */
#endif /* SQLITE_OMIT_LOAD_EXTENSION */
  devsymRandomness,         /* xRandomness */
  devsymSleep,              /* xSleep */
  devsymCurrentTime,        /* xCurrentTime */
  0,                        /* xShmOpen */
  0,                        /* xShmSize */
  0,                        /* xShmPush */
  0,                        /* xShmPull */
  0,                        /* xShmLock */
  0,                        /* xShmClose */
  0,                        /* xShmDelete */
  0,                        /* xRename */
  0                         /* xCurrentTimeInt64 */
};

static sqlite3_io_methods devsym_io_methods = {
  1,                            /* iVersion */
  devsymClose,                      /* xClose */
  devsymRead,                       /* xRead */
  devsymWrite,                      /* xWrite */

Changes to src/test_journal.c.

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  jtFullPathname,                /* xFullPathname */
  jtDlOpen,                      /* xDlOpen */
  jtDlError,                     /* xDlError */
  jtDlSym,                       /* xDlSym */
  jtDlClose,                     /* xDlClose */
  jtRandomness,                  /* xRandomness */
  jtSleep,                       /* xSleep */
  jtCurrentTime                  /* xCurrentTime */









};

static sqlite3_io_methods jt_io_methods = {
  1,                             /* iVersion */
  jtClose,                       /* xClose */
  jtRead,                        /* xRead */
  jtWrite,                       /* xWrite */







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  jtFullPathname,                /* xFullPathname */
  jtDlOpen,                      /* xDlOpen */
  jtDlError,                     /* xDlError */
  jtDlSym,                       /* xDlSym */
  jtDlClose,                     /* xDlClose */
  jtRandomness,                  /* xRandomness */
  jtSleep,                       /* xSleep */
  jtCurrentTime,                 /* xCurrentTime */
  0,                             /* xShmOpen */
  0,                             /* xShmSize */
  0,                             /* xShmPush */
  0,                             /* xShmPull */
  0,                             /* xShmLock */
  0,                             /* xShmClose */
  0,                             /* xShmDelete */
  0,                             /* xRename */
  0                              /* xCurrentTimeInt64 */
};

static sqlite3_io_methods jt_io_methods = {
  1,                             /* iVersion */
  jtClose,                       /* xClose */
  jtRead,                        /* xRead */
  jtWrite,                       /* xWrite */

Changes to src/test_onefile.c.

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    fsFullPathname,                             /* xFullPathname */
    fsDlOpen,                                   /* xDlOpen */
    fsDlError,                                  /* xDlError */
    fsDlSym,                                    /* xDlSym */
    fsDlClose,                                  /* xDlClose */
    fsRandomness,                               /* xRandomness */
    fsSleep,                                    /* xSleep */
    fsCurrentTime                               /* xCurrentTime */









  }, 
  0,                                            /* pFileList */
  0                                             /* pParent */
};

static sqlite3_io_methods fs_io_methods = {
  1,                            /* iVersion */







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    fsFullPathname,                             /* xFullPathname */
    fsDlOpen,                                   /* xDlOpen */
    fsDlError,                                  /* xDlError */
    fsDlSym,                                    /* xDlSym */
    fsDlClose,                                  /* xDlClose */
    fsRandomness,                               /* xRandomness */
    fsSleep,                                    /* xSleep */
    fsCurrentTime,                              /* xCurrentTime */
    0,                                          /* xShmOpen */
    0,                                          /* xShmSize */
    0,                                          /* xShmPush */
    0,                                          /* xShmPull */
    0,                                          /* xShmLock */
    0,                                          /* xShmClose */
    0,                                          /* xShmDelete */
    0,                                          /* xRename */
    0                                           /* xCurrentTimeInt64 */
  }, 
  0,                                            /* pFileList */
  0                                             /* pParent */
};

static sqlite3_io_methods fs_io_methods = {
  1,                            /* iVersion */

Changes to src/test_osinst.c.

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  instFullPathname,       /* xFullPathname */
  instDlOpen,             /* xDlOpen */
  instDlError,            /* xDlError */
  instDlSym,              /* xDlSym */
  instDlClose,            /* xDlClose */
  instRandomness,         /* xRandomness */
  instSleep,              /* xSleep */
  instCurrentTime         /* xCurrentTime */









};

static sqlite3_io_methods inst_io_methods = {
  1,                            /* iVersion */
  instClose,                      /* xClose */
  instRead,                       /* xRead */
  instWrite,                      /* xWrite */







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  instFullPathname,       /* xFullPathname */
  instDlOpen,             /* xDlOpen */
  instDlError,            /* xDlError */
  instDlSym,              /* xDlSym */
  instDlClose,            /* xDlClose */
  instRandomness,         /* xRandomness */
  instSleep,              /* xSleep */
  instCurrentTime,        /* xCurrentTime */
  0,                      /* xShmOpen */
  0,                      /* xShmSize */
  0,                      /* xShmPush */
  0,                      /* xShmPull */
  0,                      /* xShmLock */
  0,                      /* xShmClose */
  0,                      /* xShmDelete */
  0,                      /* xRename */
  0                       /* xCurrentTimeInt64 */
};

static sqlite3_io_methods inst_io_methods = {
  1,                            /* iVersion */
  instClose,                      /* xClose */
  instRead,                       /* xRead */
  instWrite,                      /* xWrite */