field_dirichlet_vector.f90

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module field_dirichlet_vector
  use num_types, only : rp
  use coefs, only : coef_t
  use dirichlet, only : dirichlet_t
  use bc, only : bc_t, bc_dirichlet
  use bc_list, only : bc_list_t
  use utils, only : split_string
  use field, only : field_t
  use field_list, only : field_list_t
  use math, only : masked_copy_0
  use device_math, only : device_masked_copy_0
  use dofmap, only : dofmap_t
  use field_dirichlet, only : field_dirichlet_t, field_dirichlet_update
  use utils, only : neko_error
  use json_module, only : json_file
  use field_list, only : field_list_t
  use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t
  use time_state, only : time_state_t
  implicit none
  private
 
  ! for the application on a vector field.
  type, public, extends(bc_t) :: field_dirichlet_vector_t
     ! The bc for the first compoent.
     type(field_dirichlet_t) :: bc_u
     ! The bc for the second compoent.
     type(field_dirichlet_t) :: bc_v
     ! The bc for the third compoent.
     type(field_dirichlet_t) :: bc_w
     type(field_list_t) :: field_list
     procedure(field_dirichlet_update), nopass, pointer :: update => null()
   contains
     procedure, pass(this) :: init => field_dirichlet_vector_init
     procedure, pass(this) :: init_from_components => &
          field_dirichlet_vector_init_from_components
     procedure, pass(this) :: free => field_dirichlet_vector_free
     procedure, pass(this) :: finalize => field_dirichlet_vector_finalize
     procedure, pass(this) :: apply_scalar => &
          field_dirichlet_vector_apply_scalar
     procedure, pass(this) :: apply_vector => &
          field_dirichlet_vector_apply_vector
     procedure, pass(this) :: apply_vector_dev => &
          field_dirichlet_vector_apply_vector_dev
     procedure, pass(this) :: apply_scalar_dev => &
          field_dirichlet_vector_apply_scalar_dev
  end type field_dirichlet_vector_t
 
contains
 
  subroutine field_dirichlet_vector_init(this, coef, json)
    class(field_dirichlet_vector_t), intent(inout), target :: this
    type(coef_t), target, intent(in) :: coef
    type(json_file), intent(inout) ::json
 
    call this%init_from_components(coef)
 
  end subroutine field_dirichlet_vector_init
 
  subroutine field_dirichlet_vector_init_from_components(this, coef)
    class(field_dirichlet_vector_t), intent(inout), target :: this
    type(coef_t), intent(in) :: coef
 
    call this%init_base(coef)
    this%bc_type = bc_dirichlet
 
    call this%bc_u%init_from_components(coef, "u")
    call this%bc_v%init_from_components(coef, "v")
    call this%bc_w%init_from_components(coef, "w")
 
    ! TODO set to u v w values
 
    call this%field_list%init(3)
    call this%field_list%assign_to_field(1, this%bc_u%field_bc)
    call this%field_list%assign_to_field(2, this%bc_v%field_bc)
    call this%field_list%assign_to_field(3, this%bc_w%field_bc)
 
  end subroutine field_dirichlet_vector_init_from_components
 
  subroutine field_dirichlet_vector_free(this)
    class(field_dirichlet_vector_t), target, intent(inout) :: this
 
    call this%free_base()
    call this%bc_u%free()
    call this%bc_v%free()
    call this%bc_w%free()
 
    call this%field_list%free()
 
    if (associated(this%update)) then
       nullify(this%update)
    end if
  end subroutine field_dirichlet_vector_free
 
  subroutine field_dirichlet_vector_apply_scalar(this, x, n, time, strong)
    class(field_dirichlet_vector_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
 
    call neko_error("field_dirichlet_vector cannot apply scalar BCs.&
    & Use field_dirichlet instead!")
 
  end subroutine field_dirichlet_vector_apply_scalar
 
  subroutine field_dirichlet_vector_apply_scalar_dev(this, x_d, time, &
       strong, strm)
    class(field_dirichlet_vector_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
 
    call neko_error("field_dirichlet_vector cannot apply scalar BCs.&
    & Use field_dirichlet instead!")
 
  end subroutine field_dirichlet_vector_apply_scalar_dev
 
  subroutine field_dirichlet_vector_apply_vector(this, x, y, z, n, time, &
       strong)
    class(field_dirichlet_vector_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
    logical :: strong_
 
    if (present(strong)) then
       strong_ = strong
    else
       strong_ = .true.
    end if
 
    if (strong_) then
 
       ! We can send any of the 3 bcs we have as argument, since they are all
       ! the same boundary.
       if (.not. this%updated) then
          call this%update(this%field_list, this%bc_u, time)
          this%updated = .true.
       end if
 
       call masked_copy_0(x, this%bc_u%field_bc%x, this%msk, n, this%msk(0))
       call masked_copy_0(y, this%bc_v%field_bc%x, this%msk, n, this%msk(0))
       call masked_copy_0(z, this%bc_w%field_bc%x, this%msk, n, this%msk(0))
    end if
 
  end subroutine field_dirichlet_vector_apply_vector
 
  subroutine field_dirichlet_vector_apply_vector_dev(this, x_d, y_d, z_d, &
       time, strong, strm)
    class(field_dirichlet_vector_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_) then
       if (.not. this%updated) then
          call this%update(this%field_list, this%bc_u, time)
          this%updated = .true.
       end if
 
       if (this%msk(0) .gt. 0) then
          call device_masked_copy_0(x_d, this%bc_u%field_bc%x_d, &
               this%bc_u%msk_d, this%bc_u%dof%size(), this%msk(0), strm)
          call device_masked_copy_0(y_d, this%bc_v%field_bc%x_d, &
               this%bc_v%msk_d, this%bc_v%dof%size(), this%msk(0), strm)
          call device_masked_copy_0(z_d, this%bc_w%field_bc%x_d, &
               this%bc_w%msk_d, this%bc_w%dof%size(), this%msk(0), strm)
       end if
    end if
 
  end subroutine field_dirichlet_vector_apply_vector_dev
 
  subroutine field_dirichlet_vector_finalize(this)
    class(field_dirichlet_vector_t), target, intent(inout) :: this
    call this%finalize_base()
 
    call this%bc_u%mark_facets(this%marked_facet)
    call this%bc_v%mark_facets(this%marked_facet)
    call this%bc_w%mark_facets(this%marked_facet)
 
    call this%bc_u%finalize()
    call this%bc_v%finalize()
    call this%bc_w%finalize()
 
  end subroutine field_dirichlet_vector_finalize
 
end module field_dirichlet_vector