source: palm/trunk/SOURCE/progress_bar.f90 @ 1827

!> @file progress_bar.f90
!--------------------------------------------------------------------------------!
! This file is part of PALM.
!
! PALM is free software: you can redistribute it and/or modify it under the terms
! of the GNU General Public License as published by the Free Software Foundation,
! either version 3 of the License, or (at your option) any later version.
!
! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
! A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
!
! You should have received a copy of the GNU General Public License along with
! PALM. If not, see <http://www.gnu.org/licenses/>.
!
! Copyright 1997-2016 Leibniz Universitaet Hannover
!--------------------------------------------------------------------------------!
!
! Current revisions:
! -----------------
! 
!
! Former revisions:
! -----------------
! $Id: progress_bar.f90 1818 2016-04-06 15:53:27Z maronga $
!
! 1808 2016-04-05 19:44:00Z raasch
! routine local_flush replaced by FORTRAN statement
!
! 1682 2015-10-07 23:56:08Z knoop
! Code annotations made doxygen readable 
! 
! 1468 2014-09-24 14:06:57Z maronga
! Added support for progress file PROGRESS which is used in case of batch jobs
!
! Description:
! ------------
!> This routine prints either a progress bar on the standard output in case of
!> interactive runs, or it prints the progress in a separate file called
!> PROGRESS.
!------------------------------------------------------------------------------!
 MODULE progress_bar
 

    USE control_parameters,                                                    &
        ONLY : end_time, run_identifier, simulated_time,                       &
               simulated_time_at_begin, time_restart

    USE, INTRINSIC ::  ISO_FORTRAN_ENV,                                        &
        ONLY :  OUTPUT_UNIT

    USE kinds

    IMPLICIT NONE

    PRIVATE
    PUBLIC   batch_job, finish_progress_bar, output_progress_bar

    CHARACTER(LEN=60) ::  bar      !< progress bar, initially filled with "_"
    CHARACTER(LEN=60) ::  crosses  !< filled with "X"

    INTEGER(iwp) ::  ilength !< length of progress bar filled with "X"

    LOGICAL ::  batch_job = .FALSE.   !< switch to determine the run mode

    REAL(wp) ::  time_to_be_simulated !< in sec

    LOGICAL ::  initialized = .FALSE. !< switch to determine if bar is initialized

    SAVE

 CONTAINS

!------------------------------------------------------------------------------!
! Description:
! ------------
!> Initialize the progress bar/file
!------------------------------------------------------------------------------!
 
    SUBROUTINE init_progress_bar

       IMPLICIT NONE

!
!--    Calculate the time to be simulated in this job
!--    (in case of automatic restarts the calculated time will probably be
!--    larger than the time which will actually be simulated)
       IF ( time_restart /= 9999999.9_wp  .AND.  time_restart < end_time  .AND.&
            time_restart > simulated_time_at_begin )  THEN
          time_to_be_simulated = time_restart - simulated_time_at_begin
       ELSE
          time_to_be_simulated = end_time     - simulated_time_at_begin
       ENDIF

       IF ( batch_job )  THEN

          CALL check_open ( 117 )
          WRITE ( 117, FMT='(A20,/)' ) run_identifier

       ELSE
          bar = '____________________________________________________________'
          crosses = 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
!
!--       Line feed on stdout to seperate the progress bar from previous messages
          WRITE ( OUTPUT_UNIT, '(1X)' )
#if defined( __intel_compiler )
!
!--       The Intel compiler does not allow to immediately flush the output buffer
!--       in case that option ADVANCE='NO' is used in the write statement.
!--       A workaround is to set a special carriage control feature and use "+" as
!--       first output character, but this non-standard and only available with the
!--       Intel compiler
          OPEN ( OUTPUT_UNIT, CARRIAGECONTROL='FORTRAN' )
#endif

       ENDIF

       initialized = .TRUE.

    END SUBROUTINE init_progress_bar


!------------------------------------------------------------------------------!
! Description:
! ------------
!> Print progress data to standard output (interactive) or to file (batch jobs)
!------------------------------------------------------------------------------!
 
    SUBROUTINE output_progress_bar

       IMPLICIT NONE

       REAL(wp) ::  remaining_time_in_percent  !< remaining time to be simulated
                                               !< in the job
       REAL(wp) ::  remaining_time_in_percent_total !< total remaining time of
                                                    !< the job chain

       IF ( .NOT. initialized )  CALL init_progress_bar


       remaining_time_in_percent =                                             &
          ( simulated_time - simulated_time_at_begin ) / time_to_be_simulated

       remaining_time_in_percent_total = ( simulated_time / end_time )

!
!--    In batch mode, use a file (PROGRESS), otherwise use progress bar
       IF ( batch_job )  THEN

          BACKSPACE ( 117 )
          WRITE ( 117, FMT='(F5.2,1X,F5.2)' ) remaining_time_in_percent,       &
                                              remaining_time_in_percent_total
          FLUSH( 117 )

       ELSE

!
!--       Calculate length of progress bar
          ilength = remaining_time_in_percent * 60.0_wp
          ilength = MIN( ilength, 60 )

          bar(1:ilength) = crosses(1:ilength)

#if defined( __intel_compiler )
          WRITE ( OUTPUT_UNIT, '(A,6X,''['',A,''] '',F5.1,'' left'')' )        &
                  '+', bar,                                                    &
                   MAX( 0.0_wp, ( 1.0_wp - remaining_time_in_percent ) *       &
                                  100.0_wp )
#else
          WRITE ( OUTPUT_UNIT, '(A,6X,''['',A,''] '',F5.1,'' left'')',         &
                  ADVANCE='NO' )  CHAR( 13 ), bar,                             &
                   MAX( 0.0_wp, ( 1.0_wp - remaining_time_in_percent ) *       &
                                  100.0_wp )
#endif
          FLUSH( OUTPUT_UNIT )

       ENDIF

    END SUBROUTINE output_progress_bar

!------------------------------------------------------------------------------!
! Description:
! ------------
!> Finalization of the progress bar/file
!------------------------------------------------------------------------------!
 
    SUBROUTINE finish_progress_bar

       IMPLICIT NONE

       IF ( batch_job )  THEN

          CALL close_file ( 117 )

       ELSE
       
#if defined( __intel_compiler )
!
!--       Reset to the default carriage control
          OPEN ( OUTPUT_UNIT, CARRIAGECONTROL='LIST' )
#endif
!
!--       Line feed when simulation has finished
          WRITE ( OUTPUT_UNIT, '(1X)' )

       ENDIF

    END SUBROUTINE finish_progress_bar


 END MODULE progress_bar