OpenAD/code_shallow_openad2/OpenAD_checkpoints.f90

! $Header: /u/gcmpack/MITgcm_contrib/heimbach/OpenAD/code_shallow_openad2/OpenAD_checkpoints.f90,v 1.5 2006/11/09 21:45:19 utke Exp $
module OpenAD_checkpoints

  implicit none

  private :: cp_file_number, cp_open

  public :: cp_io_unit,  cp_init, cp_write_open, cp_read_open, cp_close

  integer :: cp_file_number, cp_io_unit

  interface cp_init
     module procedure init_i
  end interface

  interface cp_open
     module procedure open_i
  end interface

  interface cp_write_open
     module procedure write_open_i
  end interface

  interface cp_read_open
     module procedure read_open_i
  end interface

  interface cp_close
     module procedure close_i
  end interface

  interface cp_findunit
     module procedure findunit_i
  end interface

contains

  subroutine init_i
    implicit none
    cp_file_number=1
  end subroutine

  subroutine write_open_i()
    implicit none
    call cp_open()
    cp_file_number=cp_file_number+1
  end subroutine 

  subroutine read_open_i()
    implicit none
    cp_file_number=cp_file_number-1
    call cp_open()
  end subroutine 

  subroutine open_i()
    implicit none
    character*128 fname ! file name
    ! get unit
    call cp_findunit()
    ! print *, 'JU: opening CP file ', cp_file_number
    ! construct the file name
    write(fname,'(A,I20.20)') 'openad_checkpoint_',cp_file_number
    open( UNIT=cp_io_unit,FILE=TRIM(fname),FORM='binary',STATUS='UNKNOWN' )
  end subroutine 

  subroutine close_i()
    implicit none
    close( UNIT=cp_io_unit)
  end subroutine

  subroutine findunit_i()
    ! returns a valid, unused unit number for Fortran I/O
    ! the routine stops the program if an error occurs in the process
    ! of searching the I/O channels.
    implicit none
    ! Local
    integer ii
    logical op
    integer ios
    character*(1024) msgbuf
    ! Sweep through a valid range of unit numbers
    cp_io_unit=-1
    do ii=9,999
       if (cp_io_unit.eq.-1) then
          inquire(unit=ii,iostat=ios,opened=op)
          if (ios.ne.0) then
             write(msgbuf,'(a,i2.2)')  'OpenAD_checkpoints:findunit_i: inquiring unit number = ',ii
             print *, msgBuf
             write(msgbuf,'(a)') 'OpenAD_checkpoints:findunit_i: inquire statement failed!'
             print *, msgBuf
             stop 'ABNORMAL END: S/R OpenAD_checkpoints:findunit_i'
          endif
          if (.NOT. op) then
             cp_io_unit=ii
          end if
       end if
    end do
    ! Was there an available unit number
    if (cp_io_unit.eq.-1) then
       write(msgbuf,'(a)')  'OpenAD_checkpoints:findunit_i: could not find an available unit number!'
       print *, msgBuf
       stop 'ABNORMAL END: S/R OpenAD_checkpoints:findunit_i'
    endif
  end subroutine

end module OpenAD_checkpoints
1	utke	1.6	! $Header: /u/gcmpack/MITgcm_contrib/heimbach/OpenAD/code_shallow_openad2/OpenAD_checkpoints.f90,v 1.5 2006/11/09 21:45:19 utke Exp $
2	utke	1.1	module OpenAD_checkpoints
3
4			implicit none
5
6	utke	1.6	private :: cp_file_number, cp_open
7	utke	1.1
8	utke	1.6	public :: cp_io_unit, cp_init, cp_write_open, cp_read_open, cp_close
9	utke	1.1
10	utke	1.5	integer :: cp_file_number, cp_io_unit
11	utke	1.1
12			interface cp_init
13	utke	1.5	module procedure init_i
14			end interface
15	utke	1.1
16	utke	1.2	interface cp_open
17	utke	1.5	module procedure open_i
18			end interface
19	utke	1.2
20	utke	1.6	interface cp_write_open
21			module procedure write_open_i
22			end interface
23
24			interface cp_read_open
25			module procedure read_open_i
26			end interface
27
28	utke	1.2	interface cp_close
29	utke	1.5	module procedure close_i
30			end interface
31	utke	1.2
32			interface cp_findunit
33	utke	1.5	module procedure findunit_i
34	utke	1.2	end interface
35
36	utke	1.1	contains
37
38	utke	1.5	subroutine init_i
39			implicit none
40	utke	1.2	cp_file_number=1
41	utke	1.5	end subroutine
42	utke	1.2
43	utke	1.6	subroutine write_open_i()
44			implicit none
45			call cp_open()
46			cp_file_number=cp_file_number+1
47			end subroutine
48
49			subroutine read_open_i()
50			implicit none
51			cp_file_number=cp_file_number-1
52			call cp_open()
53			end subroutine
54
55	utke	1.5	subroutine open_i()
56			implicit none
57			character*128 fname ! file name
58			! get unit
59			call cp_findunit()
60			! print *, 'JU: opening CP file ', cp_file_number
61			! construct the file name
62			write(fname,'(A,I20.20)') 'openad_checkpoint_',cp_file_number
63			open( UNIT=cp_io_unit,FILE=TRIM(fname),FORM='binary',STATUS='UNKNOWN' )
64			end subroutine
65
66			subroutine close_i()
67			implicit none
68			close( UNIT=cp_io_unit)
69			end subroutine
70
71			subroutine findunit_i()
72			! returns a valid, unused unit number for Fortran I/O
73			! the routine stops the program if an error occurs in the process
74			! of searching the I/O channels.
75			implicit none
76			! Local
77			integer ii
78			logical op
79			integer ios
80			character*(1024) msgbuf
81			! Sweep through a valid range of unit numbers
82			cp_io_unit=-1
83			do ii=9,999
84			if (cp_io_unit.eq.-1) then
85	utke	1.2	inquire(unit=ii,iostat=ios,opened=op)
86			if (ios.ne.0) then
87	utke	1.5	write(msgbuf,'(a,i2.2)') 'OpenAD_checkpoints:findunit_i: inquiring unit number = ',ii
88			print *, msgBuf
89			write(msgbuf,'(a)') 'OpenAD_checkpoints:findunit_i: inquire statement failed!'
90			print *, msgBuf
91			stop 'ABNORMAL END: S/R OpenAD_checkpoints:findunit_i'
92	utke	1.2	endif
93			if (.NOT. op) then
94	utke	1.5	cp_io_unit=ii
95			end if
96			end if
97			end do
98			! Was there an available unit number
99			if (cp_io_unit.eq.-1) then
100			write(msgbuf,'(a)') 'OpenAD_checkpoints:findunit_i: could not find an available unit number!'
101			print *, msgBuf
102			stop 'ABNORMAL END: S/R OpenAD_checkpoints:findunit_i'
103			endif
104			end subroutine
105	utke	1.2
106	utke	1.1	end module OpenAD_checkpoints