NAME

       gfs_pio_set_view_local - change file view to the corresponding fragment

SYNOPSIS

       #include <gfarm/gfarm.h>

       char *gfs_pio_set_view_local (GFS_File gf, int flags);

DESCRIPTION

       gfs_pio_set_view_local()  changes  the  process's  view of the data in the file specified by gf to a file
       fragment in the local file view.  The local file view  model  assumes  each  process  has  its  own  file
       fragment which is specified by the argument node of gfs_pio_set_local(3).

       The  total  number of file fragments is also specified by the argument nnode of gfs_pio_set_local(3).  If
       it is different from the total fragment number of the existent file, it is erroneous.

       Before changing to the local file view, it is necessary to call gfs_pio_set_local(3) in advance.

       Values of flag are constructed by a bitwise-inclusive-OR of GFARM_FILE_SEQUENTIAL,  GFARM_FILE_REPLICATE,
       and GFARM_FILE_NOT_REPLICATE.  For details, refer to gfs_pio_set_view_index(3).

       By  default,  Gfarm  files  are  accessed  as a whole file in global file view where each fragment can be
       seamlessly accessed.

RETURN VALUES

       NULL   The function terminated successfully.

       GFARM_ERR_NO_MEMORY
              Insufficient memory was available.

       GFARM_ERR_OPERATION_NOT_PERMITTED
              The file is not a fragmented file.

       GFARM_ERR_FRAGMENT_NUMBER_DOES_NOT_MATCH
              The total number of file fragments is different from the existence one.

       Others An error except the above occurred.  The reason is shown by its pointed strings.

SEE ALSO

       gfs_pio_create(3), gfs_pio_open(3), gfs_pio_set_local(3), gfs_pio_set_view_index(3)

Gfarm                                             18 March 2003                        GFS_PIO_SET_VIEW_LOCAL(3)