field_dirichlet.f90

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module field_dirichlet
  use num_types, only: rp
  use coefs, only: coef_t
  use dirichlet, only: dirichlet_t
  use bc, only: bc_list_t, bc_t
  use device, only: c_ptr, c_size_t
  use utils, only: split_string
  use field, only : field_t
  use field_list, only : field_list_t
  use math, only: masked_copy
  use device_math, only: device_masked_copy
  use dofmap, only : dofmap_t
  use utils, only: neko_error
  implicit none
  private
  
  type, public, extends(bc_t) :: field_dirichlet_t
     type(field_t) :: field_bc
   contains
     procedure, pass(this) :: init_field => field_dirichlet_init
     procedure, pass(this) :: apply_scalar => field_dirichlet_apply_scalar
     procedure, pass(this) :: apply_vector => field_dirichlet_apply_vector
     procedure, pass(this) :: apply_vector_dev => field_dirichlet_apply_vector_dev
     procedure, pass(this) :: apply_scalar_dev => field_dirichlet_apply_scalar_dev
  end type field_dirichlet_t
 
  abstract interface
     subroutine field_dirichlet_update(dirichlet_field_list, dirichlet_bc_list, coef, t, tstep, which_solver)
       import rp
       import field_list_t
       import bc_list_t
       import coef_t
       type(field_list_t), intent(inout) :: dirichlet_field_list
       type(bc_list_t), intent(inout) :: dirichlet_bc_list
       type(coef_t), intent(inout) :: coef
       real(kind=rp), intent(in) :: t
       integer, intent(in) :: tstep
       character(len=*), intent(in) :: which_solver
     end subroutine field_dirichlet_update
  end interface
 
  public :: field_dirichlet_update
 
contains
     
  subroutine field_dirichlet_init(this, bc_name)
    class(field_dirichlet_t), intent(inout) :: this
    character(len=*), intent(in) :: bc_name
 
    call this%field_bc%init(this%dof, bc_name)
 
  end subroutine field_dirichlet_init
 
  subroutine field_dirichlet_free(this)
    type(field_dirichlet_t), intent(inout) :: this
 
    call this%field_bc%free()
 
  end subroutine field_dirichlet_free
  
  subroutine field_dirichlet_apply_scalar(this, x, n, t, tstep)
    class(field_dirichlet_t), intent(inout) :: this
    integer, intent(in) :: n
    real(kind=rp), intent(inout),  dimension(n) :: x
    real(kind=rp), intent(in), optional :: t
    integer, intent(in), optional :: tstep
 
    if (this%msk(0) .gt. 0) then
       call masked_copy(x, this%field_bc%x, this%msk, n, this%msk(0))
    end if
 
  end subroutine field_dirichlet_apply_scalar
  
  subroutine field_dirichlet_apply_scalar_dev(this, x_d, t, tstep)
    class(field_dirichlet_t), intent(inout), target :: this
    type(c_ptr) :: x_d
    real(kind=rp), intent(in), optional :: t
    integer, intent(in), optional :: tstep
 
    if (this%msk(0) .gt. 0) then
       call device_masked_copy(x_d, this%field_bc%x_d, this%msk_d, &
            this%field_bc%dof%size(), this%msk(0))
    end if
  
  end subroutine field_dirichlet_apply_scalar_dev
 
  subroutine field_dirichlet_apply_vector(this, x, y, z, n, t, tstep)
    class(field_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
    real(kind=rp), intent(in), optional :: t
    integer, intent(in), optional :: tstep
 
    call neko_error("field_dirichlet cannot apply vector BCs.&
&Use field_dirichlet_vector instead!")
 
  end subroutine field_dirichlet_apply_vector
 
  subroutine field_dirichlet_apply_vector_dev(this, x_d, y_d, z_d, t, tstep)
    class(field_dirichlet_t), intent(inout), target :: this
    type(c_ptr) :: x_d
    type(c_ptr) :: y_d
    type(c_ptr) :: z_d
    real(kind=rp), intent(in), optional :: t
    integer, intent(in), optional :: tstep
 
    call neko_error("field_dirichlet cannot apply vector BCs.&
&Use field_dirichlet_vector instead!")
 
  end subroutine field_dirichlet_apply_vector_dev
 
end module field_dirichlet