source: palm/trunk/SOURCE/progress_bar_mod.f90 @ 4802

!> @file progress_bar_mod.f90
!--------------------------------------------------------------------------------------------------!
! This file is part of the PALM model system.
!
! 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 1997-2020 Leibniz Universitaet Hannover
!--------------------------------------------------------------------------------------------------!
!
!
! Current revisions:
! -----------------
!
!
! Former revisions:
! -----------------
! $Id: progress_bar_mod.f90 4649 2020-08-25 12:11:17Z suehring $
! File re-formatted to follow the PALM coding standard
!
! 4360 2020-01-07 11:25:50Z suehring
! Corrected "Former revisions" section
!
! 3655 2019-01-07 16:51:22Z knoop
! Increased printed length of run identifier, bugfix for restarts

! 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,                                                                           &
               initializing_actions,                                                               &
               run_identifier,                                                                     &
               simulated_time,                                                                     &
               simulated_time_at_begin,                                                            &
               spinup_time,                                                                        &
               time_restart

    USE, INTRINSIC ::  ISO_FORTRAN_ENV,                                                            &
        ONLY :  OUTPUT_UNIT

    USE kinds

    IMPLICIT NONE

    PRIVATE
    PUBLIC   progress_bar_disabled, 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 ::  progress_bar_disabled = .FALSE.   !< envpar-Namelist switch

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

    REAL(wp) ::  time_to_be_simulated !< in sec

    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
    ELSEIF ( initializing_actions == 'read_restart_data' )  THEN
       time_to_be_simulated = end_time - simulated_time_at_begin
    ELSE
       time_to_be_simulated = end_time - simulated_time_at_begin - spinup_time
    ENDIF

    IF ( progress_bar_disabled )  THEN

       CALL check_open ( 117 )
       WRITE ( 117, FMT = '(A34,/)' ) 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 is 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

    IF ( initializing_actions == 'read_restart_data' )  THEN
       remaining_time_in_percent = ( simulated_time - simulated_time_at_begin )                    &
                                   / time_to_be_simulated

       remaining_time_in_percent_total = simulated_time / end_time
    ELSE
       remaining_time_in_percent = ( simulated_time - simulated_time_at_begin - spinup_time )      &
                                   / time_to_be_simulated

       remaining_time_in_percent_total = ( ( simulated_time - spinup_time )                        &
                                           / ( end_time       - spinup_time ) )
    ENDIF

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