int function ( ) { return require ; }
this returns the i/o operations that the action is interested in as an integer bit mask . when any of these operations are ready the distributor will execute the provided operation . concode_field_sep Operation task concode_elem_sep int require concode_elem_sep long expiry concode_field_sep SelectableChannel getChannel concode_elem_sep long getExpiry concode_elem_sep Operation getOperation concode_elem_sep void run