NAME

       MPI_T_event_callback_set_info -  Updates the hints of the callback function registered for
       the callback  safety  level  specified  by  cb_safety  of  the  event-registration  handle
       associated with event_registration

SYNOPSIS

       int MPI_T_event_callback_set_info(MPI_T_event_registration event_registration,
       MPI_T_cb_safety cb_safety, MPI_Info info)

INPUT PARAMETERS

       event_registration
              - event registration (handle)
       cb_safety
              - callback safety level (integer)
       info   - info object (handle)

THREAD AND INTERRUPT SAFETY

       This  routine is thread-safe.  This means that this routine may be safely used by multiple
       threads without the need for any user-provided thread locks.  However, the routine is  not
       interrupt  safe.   Typically, this is due to the use of memory allocation routines such as
       malloc or other non-MPICH runtime routines that are themselves not interrupt-safe.

ERRORS

       All MPI routines (except MPI_Wtime and MPI_Wtick ) return an error value;  C  routines  as
       the  value of the function and Fortran routines in the last argument.  Before the value is
       returned, the current MPI error handler is called.  By default, this error handler  aborts
       the  MPI  job.   The  error  handler  may  be  changed  with  MPI_Comm_set_errhandler (for
       communicators), MPI_File_set_errhandler (for files), and MPI_Win_set_errhandler  (for  RMA
       windows).   The  MPI-1  routine  MPI_Errhandler_set may be used but its use is deprecated.
       The predefined error handler MPI_ERRORS_RETURN may be used to cause  error  values  to  be
       returned.   Note  that  MPI  does  not  guarantee that an MPI program can continue past an
       error; however, MPI implementations will attempt to continue whenever possible.

       MPI_SUCCESS
              - No error; MPI routine completed successfully.

       MPI_ERR_INFO
              - Invalid Info
       MPI_T_ERR_INVALID_HANDLE
              - The handle is invalid.
       MPI_T_ERR_NOT_INITIALIZED
              - The MPI tool information interface is not initialized.
       MPI_ERR_OTHER
              - Other error; use MPI_Error_string to get more information about this error code.

                                            2/22/2022            MPI_T_event_callback_set_info(3)