SQLite

Check-in [f64ea8a052]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Change the SQLITE_NO_SYNC compile-time option to call fstat() in place of fsync() rather than being a total no-op.
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: f64ea8a052af9790d5e6987cbd5e81d77da6f172
User & Date: drh 2015-12-02 02:33:36.549
Context
2015-12-02
13:11
Minor simplifications to the unix VFS. (check-in: 2f13c16b45 user: drh tags: trunk)
02:33
Change the SQLITE_NO_SYNC compile-time option to call fstat() in place of fsync() rather than being a total no-op. (check-in: f64ea8a052 user: drh tags: trunk)
02:08
Fix a (harmless) off-by-one error in the unix VFS logic that fsync()s a directory after deleting a file. (check-in: 3d02711a70 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/os_unix.c.
︙︙
3387
3388
3389
3390
3391
3392
3393
3394


3395
3396


3397

3398
3399
3400
3401
3402
3403
3404

  */
#ifdef SQLITE_TEST
  if( fullSync ) sqlite3_fullsync_count++;
  sqlite3_sync_count++;
#endif

  /* If we compiled with the SQLITE_NO_SYNC flag, then syncing is a
  ** no-op


  */
#ifdef SQLITE_NO_SYNC


  rc = SQLITE_OK;

#elif HAVE_FULLFSYNC
  if( fullSync ){
    rc = osFcntl(fd, F_FULLFSYNC, 0);
  }else{
    rc = 1;
  }
  /* If the FULLFSYNC failed, fall back to attempting an fsync().








|
>
>


>
>
|
>








3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409

  */
#ifdef SQLITE_TEST
  if( fullSync ) sqlite3_fullsync_count++;
  sqlite3_sync_count++;
#endif

  /* If we compiled with the SQLITE_NO_SYNC flag, then syncing is a
  ** no-op.  But go ahead and call fstat() to validate the file
  ** descriptor as we need a method to provoke a failure during
  ** coverate testing.
  */
#ifdef SQLITE_NO_SYNC
  {
    struct stat buf;
    rc = osFstat(fd, &buf);
  }
#elif HAVE_FULLFSYNC
  if( fullSync ){
    rc = osFcntl(fd, F_FULLFSYNC, 0);
  }else{
    rc = 1;
  }
  /* If the FULLFSYNC failed, fall back to attempting an fsync().
︙︙