58 lines
1.7 KiB
Plaintext
58 lines
1.7 KiB
Plaintext
module timer_c_wrapper
|
|
use :: iso_c_binding, only: c_ptr
|
|
use timer_module, only: timer, null_timer
|
|
implicit none
|
|
|
|
!
|
|
! C interoperable callback setup
|
|
!
|
|
abstract interface
|
|
subroutine c_timer_callback (context, dname, k)
|
|
use, intrinsic :: iso_c_binding, only: c_ptr, c_char
|
|
implicit none
|
|
type(c_ptr), value, intent(in) :: context
|
|
character(c_char), intent(in) :: dname(*)
|
|
integer, intent(in), value :: k
|
|
end subroutine c_timer_callback
|
|
end interface
|
|
|
|
public :: init, fini
|
|
|
|
private
|
|
|
|
!
|
|
! the following are singleton items which assumes that any timer
|
|
! implementation should only assume one global instance, probably a
|
|
! struct or class object whose address is stored the context below
|
|
!
|
|
type(c_ptr), private :: the_context
|
|
procedure(C_timer_callback), pointer, private :: the_callback
|
|
|
|
contains
|
|
subroutine timer_callback_wrapper (dname, k)
|
|
use, intrinsic :: iso_c_binding, only: c_null_char
|
|
implicit none
|
|
character(len=8), intent(in) :: dname
|
|
integer, intent(in) :: k
|
|
call the_callback (the_context, trim (dname) // c_null_char, k)
|
|
end subroutine timer_callback_wrapper
|
|
|
|
subroutine init (context, callback)
|
|
use, intrinsic :: iso_c_binding, only: c_ptr, c_funptr, c_f_procpointer
|
|
use iso_c_utilities, only: c_to_f_string
|
|
use timer_module, only: timer
|
|
implicit none
|
|
type(c_ptr), value, intent(in) :: context
|
|
type(c_funptr), value, intent(in) :: callback
|
|
the_context=context
|
|
call c_f_procpointer (callback, the_callback)
|
|
timer => timer_callback_wrapper
|
|
end subroutine init
|
|
|
|
subroutine fini ()
|
|
implicit none
|
|
timer => null_timer
|
|
end subroutine fini
|
|
|
|
end module timer_c_wrapper
|