dirichlet.f90

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module dirichlet
  use device_dirichlet, only : device_dirichlet_apply_scalar, &
       device_dirichlet_apply_vector
  use num_types, only : rp
  use bc, only : bc_t, bc_dirichlet
  use coefs, only : coef_t
  use json_module, only : json_file
  use json_utils, only : json_get_or_lookup
  use, intrinsic :: iso_c_binding, only : c_ptr
  use time_state, only : time_state_t
  implicit none
  private
 
  type, public, extends(bc_t) :: dirichlet_t
     real(kind=rp), private :: g
   contains
     procedure, pass(this) :: apply_scalar => dirichlet_apply_scalar
     procedure, pass(this) :: apply_vector => dirichlet_apply_vector
     procedure, pass(this) :: apply_scalar_dev => dirichlet_apply_scalar_dev
     procedure, pass(this) :: apply_vector_dev => dirichlet_apply_vector_dev
     procedure, pass(this) :: set_g => dirichlet_set_g
     procedure, pass(this) :: init => dirichlet_init
     procedure, pass(this) :: init_from_components => &
          dirichlet_init_from_components
     procedure, pass(this) :: free => dirichlet_free
     procedure, pass(this) :: finalize => dirichlet_finalize
  end type dirichlet_t
 
contains
 
  subroutine dirichlet_init(this, coef, json)
    class(dirichlet_t), intent(inout), target :: this
    type(coef_t), target, intent(in) :: coef
    type(json_file), intent(inout) ::json
    real(kind=rp) :: g
 
    call this%init_base(coef)
    call json_get_or_lookup(json , "value", g)
 
    call this%init_from_components(coef, g)
  end subroutine dirichlet_init
 
  subroutine dirichlet_init_from_components(this, coef, g)
    class(dirichlet_t), intent(inout), target :: this
    type(coef_t), target, intent(in) :: coef
    real(kind=rp), intent(in) :: g
 
    call this%init_base(coef)
    this%g = g
    this%bc_type = bc_dirichlet
  end subroutine dirichlet_init_from_components
 
  subroutine dirichlet_apply_scalar(this, x, n, time, strong)
    class(dirichlet_t), intent(inout) :: this
    integer, intent(in) :: n
    real(kind=rp), intent(inout), dimension(n) :: x
    type(time_state_t), intent(in), optional :: time
    logical, intent(in), optional :: strong
    integer :: i, m, k
    logical :: strong_
 
    if (present(strong)) then
       strong_ = strong
    else
       strong_ = .true.
    end if
 
    if (strong_) then
       m = this%msk(0)
       !$omp do
       do i = 1, m
          k = this%msk(i)
          x(k) = this%g
       end do
       !$omp end do
    end if
  end subroutine dirichlet_apply_scalar
 
  subroutine dirichlet_apply_vector(this, x, y, z, n, time, strong)
    class(dirichlet_t), intent(inout) :: this
    integer, intent(in) :: n
    real(kind=rp), intent(inout), dimension(n) :: x
    real(kind=rp), intent(inout), dimension(n) :: y
    real(kind=rp), intent(inout), dimension(n) :: z
    type(time_state_t), intent(in), optional :: time
    logical, intent(in), optional :: strong
    integer :: i, m, k
    logical :: strong_
 
    if (present(strong)) then
       strong_ = strong
    else
       strong_ = .true.
    end if
 
    if (strong_) then
       m = this%msk(0)
       !$omp do
       do i = 1, m
          k = this%msk(i)
          x(k) = this%g
          y(k) = this%g
          z(k) = this%g
       end do
       !$omp end do
    end if
 
  end subroutine dirichlet_apply_vector
 
  subroutine dirichlet_apply_scalar_dev(this, x_d, time, strong, strm)
    class(dirichlet_t), intent(inout), target :: this
    type(c_ptr), intent(inout) :: x_d
    type(time_state_t), intent(in), optional :: time
    logical, intent(in), optional :: strong
    type(c_ptr), intent(inout) :: strm
    logical :: strong_
 
    if (present(strong)) then
       strong_ = strong
    else
       strong_ = .true.
    end if
 
    if (strong_ .and. this%msk(0) .gt. 0) then
       call device_dirichlet_apply_scalar(this%msk_d, x_d, &
            this%g, size(this%msk), strm)
    end if
 
  end subroutine dirichlet_apply_scalar_dev
 
  subroutine dirichlet_apply_vector_dev(this, x_d, y_d, z_d, &
       time, strong, strm)
    class(dirichlet_t), intent(inout), target :: this
    type(c_ptr), intent(inout) :: x_d
    type(c_ptr), intent(inout) :: y_d
    type(c_ptr), intent(inout) :: z_d
    type(time_state_t), intent(in), optional :: time
    logical, intent(in), optional :: strong
    type(c_ptr), intent(inout) :: strm
    logical :: strong_
 
    if (present(strong)) then
       strong_ = strong
    else
       strong_ = .true.
    end if
 
    if (strong_ .and. this%msk(0) .gt. 0) then
       call device_dirichlet_apply_vector(this%msk_d, x_d, y_d, z_d, this%g, &
            size(this%msk), strm)
    end if
 
  end subroutine dirichlet_apply_vector_dev
 
  subroutine dirichlet_set_g(this, g)
    class(dirichlet_t), intent(inout) :: this
    real(kind=rp), intent(in) :: g
 
    this%g = g
 
  end subroutine dirichlet_set_g
 
  subroutine dirichlet_free(this)
    class(dirichlet_t), target, intent(inout) :: this
 
    call this%free_base
 
  end subroutine dirichlet_free
 
  subroutine dirichlet_finalize(this)
    class(dirichlet_t), target, intent(inout) :: this
    call this%finalize_base()
  end subroutine dirichlet_finalize
 
end module dirichlet