WSJT-X/lib/timer_module.f90

module timer_module
  implicit none

  abstract interface
     subroutine timer_callback (dname, k)
       character(len=8), intent(in) :: dname
       integer, intent(in) :: k
     end subroutine timer_callback
  end interface

  public :: null_timer
  procedure(timer_callback), pointer :: timer => null_timer

contains
  !
  ! default Fortran implementation which does nothing
  !
  subroutine null_timer (dname, k)
    implicit none
    character(len=8), intent(in) :: dname
    integer, intent(in) :: k
    if(dname.eq.'99999999' .and. k.eq.9999) stop  !Silence compiler warnings
  end subroutine null_timer
end module timer_module
Make Fortran profiling timer function a callback with a default null implementation Groundwork for calling the decoders directly from C/C++ threads. To access the timer module timer_module must now be used. Instrumented code need only use the module function 'timer' which is now a procedure pointer that is guaranteed to be associated (unless null() is assigned to it, which should not be done). The default behaviour of 'timer' is to do nothing. If a Fortran program wishes to profile code it should now use the timer_impl module which contains a default timer implementation. The main program should call 'init_timer([filename])' before using 'timer' or calling routines that are instrumented. If 'init_timer([filename])'. If it is called then an optional file name may be provided with 'timer.out' being used as a default. The procedure 'fini_timer()' may be called to close the file. The default timer implementation is thread safe if used with OpenMP multi-threaded code so long as the OpenMP thread team is given the copyin(/timer_private/) attribute for correct operation. The common block /timer_private/ should be included for OpenMP use by including the file 'timer_common.inc'. The module 'lib/timer_C_wrapper.f90' provides a Fortran wrapper along with 'init' and 'fini' subroutines which allow a C/C++ application to call timer instrumented Fortran code and for it to receive callbacks of 'timer()' subroutine invocations. No C/C++ timer implementation is provided at this stage. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6320 ab8295b8-cf94-4d9e-aec4-7959e3be5d79 2015-12-27 10:40:57 -05:00			`module timer_module`
			`implicit none`

			`abstract interface`
			`subroutine timer_callback (dname, k)`
			`character(len=8), intent(in) :: dname`
			`integer, intent(in) :: k`
			`end subroutine timer_callback`
			`end interface`

			`public :: null_timer`
			`procedure(timer_callback), pointer :: timer => null_timer`

			`contains`
			`!`
			`! default Fortran implementation which does nothing`
			`!`
			`subroutine null_timer (dname, k)`
			`implicit none`
			`character(len=8), intent(in) :: dname`
			`integer, intent(in) :: k`
Suppress some compiler warnings. (More to come...) git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6748 ab8295b8-cf94-4d9e-aec4-7959e3be5d79 2016-06-09 15:39:48 -04:00			`if(dname.eq.'99999999' .and. k.eq.9999) stop !Silence compiler warnings`
Make Fortran profiling timer function a callback with a default null implementation Groundwork for calling the decoders directly from C/C++ threads. To access the timer module timer_module must now be used. Instrumented code need only use the module function 'timer' which is now a procedure pointer that is guaranteed to be associated (unless null() is assigned to it, which should not be done). The default behaviour of 'timer' is to do nothing. If a Fortran program wishes to profile code it should now use the timer_impl module which contains a default timer implementation. The main program should call 'init_timer([filename])' before using 'timer' or calling routines that are instrumented. If 'init_timer([filename])'. If it is called then an optional file name may be provided with 'timer.out' being used as a default. The procedure 'fini_timer()' may be called to close the file. The default timer implementation is thread safe if used with OpenMP multi-threaded code so long as the OpenMP thread team is given the copyin(/timer_private/) attribute for correct operation. The common block /timer_private/ should be included for OpenMP use by including the file 'timer_common.inc'. The module 'lib/timer_C_wrapper.f90' provides a Fortran wrapper along with 'init' and 'fini' subroutines which allow a C/C++ application to call timer instrumented Fortran code and for it to receive callbacks of 'timer()' subroutine invocations. No C/C++ timer implementation is provided at this stage. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6320 ab8295b8-cf94-4d9e-aec4-7959e3be5d79 2015-12-27 10:40:57 -05:00			`end subroutine null_timer`
			`end module timer_module`
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