Pointer to an Operator of a specified type. More...

#include <handle.hpp>

Collaboration diagram for mfem::OperatorHandle:

Public Member Functions
	OperatorHandle ()
	Create an OperatorHandle with type id = Operator::MFEM_SPARSEMAT without allocating the actual matrix.

	OperatorHandle (Operator::Type tid)
	Create a OperatorHandle with a specified type id, tid, without allocating the actual matrix.

template<typename OpType >
	OperatorHandle (OpType *A, bool own_A=true)
	Create an OperatorHandle for the given OpType pointer, A.

	OperatorHandle (const OperatorHandle &other)
	Shallow copy. The ownership flag of the target is set to false.

	~OperatorHandle ()

OperatorHandle &	operator= (const OperatorHandle &master)
	Shallow copy. The ownership flag of the target is set to false.

Operator *	Ptr () const
	Access the underlying Operator pointer.

Operator *	operator-> () const
	Support the use of -> to call methods of the underlying Operator.

Operator &	operator* ()
	Access the underlying Operator.

const Operator &	operator* () const
	Access the underlying Operator.

Operator::Type	Type () const
	Get the currently set operator type id.

template<typename OpType >
OpType *	As () const
	Return the Operator pointer statically cast to a specified OpType. Similar to the method Get().

template<typename OpType >
OpType *	Is () const
	Return the Operator pointer dynamically cast to a specified OpType.

template<typename OpType >
void	Get (OpType *&A) const
	Return the Operator pointer statically cast to a given OpType.

bool	OwnsOperator () const
	Return true if the OperatorHandle owns the held Operator.

void	SetOperatorOwner (bool own=true)
	Set the ownership flag for the held Operator.

void	Clear ()
	Clear the OperatorHandle, deleting the held Operator (if owned), while leaving the type id unchanged.

void	SetType (Operator::Type tid)
	Invoke Clear() and set a new type id.

template<typename OpType >
void	Reset (OpType *A, bool own_A=true)
	Reset the OperatorHandle to the given OpType pointer, A.

void	MakeSquareBlockDiag (MPI_Comm comm, HYPRE_BigInt glob_size, HYPRE_BigInt row_starts, SparseMatrix diag)
	Reset the OperatorHandle to hold a parallel square block-diagonal matrix using the currently set type id.

void	MakeRectangularBlockDiag (MPI_Comm comm, HYPRE_BigInt glob_num_rows, HYPRE_BigInt glob_num_cols, HYPRE_BigInt row_starts, HYPRE_BigInt col_starts, SparseMatrix *diag)
	Reset the OperatorHandle to hold a parallel rectangular block-diagonal matrix using the currently set type id.

void	MakePtAP (OperatorHandle &A, OperatorHandle &P)
	Reset the OperatorHandle to hold the product P^t A P.

void	MakeRAP (OperatorHandle &Rt, OperatorHandle &A, OperatorHandle &P)
	Reset the OperatorHandle to hold the product R A P, where R = Rt^t.

void	ConvertFrom (OperatorHandle &A)
	Convert the given OperatorHandle A to the currently set type id.

template<typename OpType >
void	ConvertFrom (OpType *A)
	Convert the given OpType pointer, A, to the currently set type id.

void	EliminateRowsCols (OperatorHandle &A, const Array< int > &ess_dof_list)
	Reset the OperatorHandle to be the eliminated part of A after elimination of the essential dofs ess_dof_list.

void	EliminateRows (const Array< int > &ess_dof_list)
	Eliminate the rows corresponding to the essential dofs ess_dof_list.

void	EliminateCols (const Array< int > &ess_dof_list)
	Eliminate columns corresponding to the essential dofs ess_dof_list.

void	EliminateBC (const OperatorHandle &A_e, const Array< int > &ess_dof_list, const Vector &X, Vector &B) const
	Eliminate essential dofs from the solution X into the r.h.s. B.

Protected Member Functions
Operator::Type	CheckType (Operator::Type tid)

template<typename OpType >
void	pSet (OpType *A, bool own_A=true)

Protected Attributes
Operator *	oper

Operator::Type	type_id

bool	own_oper

Static Protected Attributes
static const char	not_supported_msg []

Detailed Description

Pointer to an Operator of a specified type.

This class provides a common interface for global, matrix-type operators to be used in bilinear forms, gradients of nonlinear forms, static condensation, hybridization, etc. The following backends are currently supported:

HYPRE parallel sparse matrix (Hypre_ParCSR)
PETSC globally assembled parallel sparse matrix (PETSC_MATAIJ)
PETSC parallel matrix assembled on each processor (PETSC_MATIS) See also Operator::Type.

Definition at line 33 of file handle.hpp.

Constructor & Destructor Documentation

◆ OperatorHandle() [1/4]

mfem::OperatorHandle::OperatorHandle ( )

inline

Create an OperatorHandle with type id = Operator::MFEM_SPARSEMAT without allocating the actual matrix.

Definition at line 55 of file handle.hpp.

◆ OperatorHandle() [2/4]

mfem::OperatorHandle::OperatorHandle ( Operator::Type tid )

inlineexplicit

Create a OperatorHandle with a specified type id, tid, without allocating the actual matrix.

Definition at line 60 of file handle.hpp.

◆ OperatorHandle() [3/4]

template<typename OpType >

mfem::OperatorHandle::OperatorHandle	(	OpType *	A,
		bool	own_A = true )

inlineexplicit

Create an OperatorHandle for the given OpType pointer, A.

Presently, OpType can be SparseMatrix, HypreParMatrix, or PetscParMatrix.

The operator ownership flag is set to the value of own_A.

It is expected that A points to a valid object.

Definition at line 70 of file handle.hpp.

◆ OperatorHandle() [4/4]

mfem::OperatorHandle::OperatorHandle ( const OperatorHandle & other )

inline

Shallow copy. The ownership flag of the target is set to false.

Definition at line 73 of file handle.hpp.

◆ ~OperatorHandle()

mfem::OperatorHandle::~OperatorHandle ( )

inline

Definition at line 77 of file handle.hpp.

Member Function Documentation

◆ As()

template<typename OpType >

OpType * mfem::OperatorHandle::As ( ) const

inline

Return the Operator pointer statically cast to a specified OpType. Similar to the method Get().

Definition at line 104 of file handle.hpp.

◆ CheckType()

Operator::Type mfem::OperatorHandle::CheckType ( Operator::Type tid )

protected

Definition at line 32 of file handle.cpp.

◆ Clear()

void mfem::OperatorHandle::Clear ( )

inline

Clear the OperatorHandle, deleting the held Operator (if owned), while leaving the type id unchanged.

Definition at line 124 of file handle.hpp.

◆ ConvertFrom() [1/2]

void mfem::OperatorHandle::ConvertFrom ( OperatorHandle & A )

Convert the given OperatorHandle A to the currently set type id.

The operator ownership flag is set to false if the object held by A will be held by this object as well, e.g. when the source and destination types are the same; otherwise it is set to true.

Definition at line 200 of file handle.cpp.

◆ ConvertFrom() [2/2]

template<typename OpType >

void mfem::OperatorHandle::ConvertFrom ( OpType * A )

inline

Convert the given OpType pointer, A, to the currently set type id.

This method creates a temporary OperatorHandle for A and invokes ConvertFrom(OperatorHandle &) with it.

Definition at line 187 of file handle.hpp.

◆ EliminateBC()

void mfem::OperatorHandle::EliminateBC	(	const OperatorHandle &	A_e,
		const Array< int > &	ess_dof_list,
		const Vector &	X,
		Vector &	B ) const

Eliminate essential dofs from the solution X into the r.h.s. B.

The argument A_e is expected to be the result of the method EliminateRowsCols().

Definition at line 340 of file handle.cpp.

◆ EliminateCols()

void mfem::OperatorHandle::EliminateCols ( const Array< int > & ess_dof_list )

Eliminate columns corresponding to the essential dofs ess_dof_list.

Definition at line 321 of file handle.cpp.

◆ EliminateRows()

void mfem::OperatorHandle::EliminateRows ( const Array< int > & ess_dof_list )

Eliminate the rows corresponding to the essential dofs ess_dof_list.

Definition at line 303 of file handle.cpp.

◆ EliminateRowsCols()

void mfem::OperatorHandle::EliminateRowsCols	(	OperatorHandle &	A,
		const Array< int > &	ess_dof_list )

Reset the OperatorHandle to be the eliminated part of A after elimination of the essential dofs ess_dof_list.

Definition at line 252 of file handle.cpp.

◆ Get()

template<typename OpType >

void mfem::OperatorHandle::Get ( OpType *& A ) const

inline

Return the Operator pointer statically cast to a given OpType.

Similar to the method As(), however the template type OpType can be derived automatically from the argument A.

Definition at line 114 of file handle.hpp.

◆ Is()

template<typename OpType >

OpType * mfem::OperatorHandle::Is ( ) const

inline

Return the Operator pointer dynamically cast to a specified OpType.

Definition at line 108 of file handle.hpp.

◆ MakePtAP()

void mfem::OperatorHandle::MakePtAP	(	OperatorHandle &	A,
		OperatorHandle &	P )

Reset the OperatorHandle to hold the product P^t A P.

The type id of the result is determined by that of A and P. The operator ownership flag is set to true.

Definition at line 123 of file handle.cpp.

◆ MakeRAP()

void mfem::OperatorHandle::MakeRAP	(	OperatorHandle &	Rt,
		OperatorHandle &	A,
		OperatorHandle &	P )

Reset the OperatorHandle to hold the product R A P, where R = Rt^t.

The type id of the result is determined by that of Rt, A, and P. The operator ownership flag is set to true.

Definition at line 161 of file handle.cpp.

◆ MakeRectangularBlockDiag()

void mfem::OperatorHandle::MakeRectangularBlockDiag	(	MPI_Comm	comm,
		HYPRE_BigInt	glob_num_rows,
		HYPRE_BigInt	glob_num_cols,
		HYPRE_BigInt *	row_starts,
		HYPRE_BigInt *	col_starts,
		SparseMatrix *	diag )

Reset the OperatorHandle to hold a parallel rectangular block-diagonal matrix using the currently set type id.

The operator ownership flag is set to true.

Definition at line 90 of file handle.cpp.

◆ MakeSquareBlockDiag()

void mfem::OperatorHandle::MakeSquareBlockDiag	(	MPI_Comm	comm,
		HYPRE_BigInt	glob_size,
		HYPRE_BigInt *	row_starts,
		SparseMatrix *	diag )

Reset the OperatorHandle to hold a parallel square block-diagonal matrix using the currently set type id.

The operator ownership flag is set to true.

Definition at line 60 of file handle.cpp.

◆ operator*() [1/2]

Operator & mfem::OperatorHandle::operator* ( )

inline

Access the underlying Operator.

Definition at line 93 of file handle.hpp.

◆ operator*() [2/2]

const Operator & mfem::OperatorHandle::operator* ( ) const

inline

Access the underlying Operator.

Definition at line 96 of file handle.hpp.

◆ operator->()

Operator * mfem::OperatorHandle::operator-> ( ) const

inline

Support the use of -> to call methods of the underlying Operator.

Definition at line 90 of file handle.hpp.

◆ operator=()

OperatorHandle & mfem::OperatorHandle::operator= ( const OperatorHandle & master )

inline

Shallow copy. The ownership flag of the target is set to false.

Definition at line 80 of file handle.hpp.

◆ OwnsOperator()

bool mfem::OperatorHandle::OwnsOperator ( ) const

inline

Return true if the OperatorHandle owns the held Operator.

Definition at line 117 of file handle.hpp.

◆ pSet()

template<typename OpType >

void mfem::OperatorHandle::pSet	(	OpType *	A,
		bool	own_A = true )

inlineprotected

Definition at line 45 of file handle.hpp.

◆ Ptr()

Operator * mfem::OperatorHandle::Ptr ( ) const

inline

Access the underlying Operator pointer.

Definition at line 87 of file handle.hpp.

◆ Reset()

template<typename OpType >

void mfem::OperatorHandle::Reset	(	OpType *	A,
		bool	own_A = true )

inline

Reset the OperatorHandle to the given OpType pointer, A.

Presently, OpType can be SparseMatrix, HypreParMatrix, or PetscParMatrix.

The operator ownership flag is set to the value of own_A.

It is expected that A points to a valid object.

Definition at line 145 of file handle.hpp.

◆ SetOperatorOwner()

void mfem::OperatorHandle::SetOperatorOwner ( bool own = true )

inline

Set the ownership flag for the held Operator.

Definition at line 120 of file handle.hpp.

◆ SetType()

void mfem::OperatorHandle::SetType ( Operator::Type tid )

inline

Invoke Clear() and set a new type id.

Definition at line 132 of file handle.hpp.

◆ Type()

Operator::Type mfem::OperatorHandle::Type ( ) const

inline

Get the currently set operator type id.

Definition at line 99 of file handle.hpp.

Member Data Documentation

◆ not_supported_msg

const char mfem::OperatorHandle::not_supported_msg

staticprotected

Initial value:

=

"Operator::Type is not supported: type_id = "

Definition at line 36 of file handle.hpp.

◆ oper

Operator* mfem::OperatorHandle::oper

protected

Definition at line 38 of file handle.hpp.

◆ own_oper

bool mfem::OperatorHandle::own_oper

protected

Definition at line 40 of file handle.hpp.

◆ type_id

Operator::Type mfem::OperatorHandle::type_id

protected

Definition at line 39 of file handle.hpp.

The documentation for this class was generated from the following files:

linalg/handle.hpp
linalg/handle.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ OperatorHandle() [1/4]

◆ OperatorHandle() [2/4]

◆ OperatorHandle() [3/4]

◆ OperatorHandle() [4/4]

◆ ~OperatorHandle()

Member Function Documentation

◆ As()

◆ CheckType()

◆ Clear()

◆ ConvertFrom() [1/2]

◆ ConvertFrom() [2/2]

◆ EliminateBC()

◆ EliminateCols()

◆ EliminateRows()

◆ EliminateRowsCols()

◆ Get()

◆ Is()

◆ MakePtAP()

◆ MakeRAP()

◆ MakeRectangularBlockDiag()

◆ MakeSquareBlockDiag()

◆ operator*() [1/2]

◆ operator*() [2/2]

◆ operator->()

◆ operator=()

◆ OwnsOperator()

◆ pSet()

◆ Ptr()

◆ Reset()

◆ SetOperatorOwner()

◆ SetType()

◆ Type()

Member Data Documentation

◆ not_supported_msg

◆ oper

◆ own_oper

◆ type_id