Reference documentation for deal.II version GIT relicensing-12-g89ba5bf9db 2024-02-24 00:00:03+00:00
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Classes | Public Types | Public Member Functions | Static Public Member Functions | Public Attributes | Protected Member Functions | Protected Attributes | Private Types | Private Member Functions | Private Attributes | Static Private Attributes | Friends | List of all members
MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > > Class Template Reference

#include <deal.II/multigrid/mg_transfer_global_coarsening.h>

Inheritance diagram for MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >:
Inheritance graph
[legend]

Classes

struct  MGTransferScheme
 

Public Types

using VectorType = LinearAlgebra::distributed::Vector< Number >
 

Public Member Functions

void reinit_geometric_transfer (const DoFHandler< dim > &dof_handler_fine, const DoFHandler< dim > &dof_handler_coarse, const AffineConstraints< Number > &constraint_fine=AffineConstraints< Number >(), const AffineConstraints< Number > &constraint_coarse=AffineConstraints< Number >(), const unsigned int mg_level_fine=numbers::invalid_unsigned_int, const unsigned int mg_level_coarse=numbers::invalid_unsigned_int)
 
void reinit_polynomial_transfer (const DoFHandler< dim > &dof_handler_fine, const DoFHandler< dim > &dof_handler_coarse, const AffineConstraints< Number > &constraint_fine=AffineConstraints< Number >(), const AffineConstraints< Number > &constraint_coarse=AffineConstraints< Number >(), const unsigned int mg_level_fine=numbers::invalid_unsigned_int, const unsigned int mg_level_coarse=numbers::invalid_unsigned_int)
 
void reinit (const DoFHandler< dim > &dof_handler_fine, const DoFHandler< dim > &dof_handler_coarse, const AffineConstraints< Number > &constraint_fine=AffineConstraints< Number >(), const AffineConstraints< Number > &constraint_coarse=AffineConstraints< Number >(), const unsigned int mg_level_fine=numbers::invalid_unsigned_int, const unsigned int mg_level_coarse=numbers::invalid_unsigned_int)
 
void interpolate (LinearAlgebra::distributed::Vector< Number > &dst, const LinearAlgebra::distributed::Vector< Number > &src) const override
 
void enable_inplace_operations_if_possible (const std::shared_ptr< const Utilities::MPI::Partitioner > &partitioner_coarse, const std::shared_ptr< const Utilities::MPI::Partitioner > &partitioner_fine) override
 
std::size_t memory_consumption () const override
 
void prolongate_and_add (VectorType &dst, const VectorType &src) const
 
void restrict_and_add (VectorType &dst, const VectorType &src) const
 
template<class Archive >
void serialize (Archive &ar, const unsigned int version)
 
Subscriptor functionality

Classes derived from Subscriptor provide a facility to subscribe to this object. This is mostly used by the SmartPointer class.

void subscribe (std::atomic< bool > *const validity, const std::string &identifier="") const
 
void unsubscribe (std::atomic< bool > *const validity, const std::string &identifier="") const
 
unsigned int n_subscriptions () const
 
template<typename StreamType >
void list_subscribers (StreamType &stream) const
 
void list_subscribers () const
 

Static Public Member Functions

static bool fast_polynomial_transfer_supported (const unsigned int fe_degree_fine, const unsigned int fe_degree_coarse)
 
static ::ExceptionBaseExcInUse (int arg1, std::string arg2, std::string arg3)
 
static ::ExceptionBaseExcNoSubscriber (std::string arg1, std::string arg2)
 

Public Attributes

std::shared_ptr< const Utilities::MPI::Partitionerpartitioner_coarse
 
std::shared_ptr< const Utilities::MPI::Partitionerpartitioner_fine
 

Protected Member Functions

void prolongate_and_add_internal (LinearAlgebra::distributed::Vector< Number > &dst, const LinearAlgebra::distributed::Vector< Number > &src) const override
 
void restrict_and_add_internal (LinearAlgebra::distributed::Vector< Number > &dst, const LinearAlgebra::distributed::Vector< Number > &src) const override
 
void update_ghost_values (const LinearAlgebra::distributed::Vector< Number > &vec) const
 
void compress (LinearAlgebra::distributed::Vector< Number > &vec, const VectorOperation::values op) const
 
void zero_out_ghost_values (const LinearAlgebra::distributed::Vector< Number > &vec) const
 
template<int dim, std::size_t width, typename IndexType >
void internal_enable_inplace_operations_if_possible (const std::shared_ptr< const Utilities::MPI::Partitioner > &partitioner_coarse, const std::shared_ptr< const Utilities::MPI::Partitioner > &partitioner_fine, bool &vec_fine_needs_ghost_update, internal::MatrixFreeFunctions::ConstraintInfo< dim, VectorizedArray< Number, width >, IndexType > &constraint_info_coarse, std::vector< unsigned int > &dof_indices_fine)
 

Protected Attributes

bool fine_element_is_continuous
 
LinearAlgebra::distributed::Vector< Number > vec_coarse
 
LinearAlgebra::distributed::Vector< Number > vec_fine
 
bool vec_fine_needs_ghost_update
 
std::shared_ptr< const Utilities::MPI::Partitionerpartitioner_coarse_embedded
 
std::shared_ptr< const Utilities::MPI::Partitionerpartitioner_fine_embedded
 
AlignedVector< Number > buffer_coarse_embedded
 
AlignedVector< Number > buffer_fine_embedded
 

Private Types

using VectorizedArrayType = VectorizedArray< Number >
 
using map_value_type = decltype(counter_map)::value_type
 
using map_iterator = decltype(counter_map)::iterator
 

Private Member Functions

void check_no_subscribers () const noexcept
 

Private Attributes

std::vector< MGTransferScheme > schemes
 
internal::MatrixFreeFunctions::ConstraintInfo< dim, VectorizedArrayType, types::global_dof_indexconstraint_info_coarse
 
internal::MatrixFreeFunctions::ConstraintInfo< dim, VectorizedArrayType, types::global_dof_indexconstraint_info_fine
 
std::vector< Number > weights
 
AlignedVector< VectorizedArrayTypeweights_compressed
 
unsigned int n_components
 
SmartPointer< const DoFHandler< dim > > dof_handler_fine
 
unsigned int mg_level_fine
 
std::atomic< unsigned intcounter
 
std::map< std::string, unsigned intcounter_map
 
std::vector< std::atomic< bool > * > validity_pointers
 
const std::type_info * object_info
 

Static Private Attributes

static std::mutex mutex
 

Friends

class internal::MGTwoLevelTransferImplementation
 
class MGTransferMF< dim, Number >
 

Detailed Description

template<int dim, typename Number>
class MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >

Class for transfer between two multigrid levels for p- or global coarsening. Specialization for LinearAlgebra::distributed::Vector.

The implementation of this class is explained in detail in [148].

Definition at line 495 of file mg_transfer_global_coarsening.h.

Member Typedef Documentation

◆ VectorizedArrayType

template<int dim, typename Number >
using MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::VectorizedArrayType = VectorizedArray<Number>
private

Definition at line 498 of file mg_transfer_global_coarsening.h.

◆ VectorType

template<typename Number >
using MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::VectorType = LinearAlgebra::distributed::Vector<Number>
inherited

Definition at line 269 of file mg_transfer_global_coarsening.h.

◆ map_value_type

using Subscriptor::map_value_type = decltype(counter_map)::value_type
privateinherited

The data type used in counter_map.

Definition at line 229 of file subscriptor.h.

◆ map_iterator

using Subscriptor::map_iterator = decltype(counter_map)::iterator
privateinherited

The iterator type used in counter_map.

Definition at line 234 of file subscriptor.h.

Member Function Documentation

◆ reinit_geometric_transfer()

template<int dim, typename Number >
void MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::reinit_geometric_transfer ( const DoFHandler< dim > &  dof_handler_fine,
const DoFHandler< dim > &  dof_handler_coarse,
const AffineConstraints< Number > &  constraint_fine = AffineConstraints< Number >(),
const AffineConstraints< Number > &  constraint_coarse = AffineConstraints< Number >(),
const unsigned int  mg_level_fine = numbers::invalid_unsigned_int,
const unsigned int  mg_level_coarse = numbers::invalid_unsigned_int 
)

Set up global coarsening between the given DoFHandler objects ( dof_handler_fine and dof_handler_coarse). The transfer can be only performed on active levels.

◆ reinit_polynomial_transfer()

template<int dim, typename Number >
void MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::reinit_polynomial_transfer ( const DoFHandler< dim > &  dof_handler_fine,
const DoFHandler< dim > &  dof_handler_coarse,
const AffineConstraints< Number > &  constraint_fine = AffineConstraints< Number >(),
const AffineConstraints< Number > &  constraint_coarse = AffineConstraints< Number >(),
const unsigned int  mg_level_fine = numbers::invalid_unsigned_int,
const unsigned int  mg_level_coarse = numbers::invalid_unsigned_int 
)

Set up polynomial coarsening between the given DoFHandler objects ( dof_handler_fine and dof_handler_coarse). Polynomial transfers can be only performed on active levels (numbers::invalid_unsigned_int) or on coarse-grid levels, i.e., levels without hanging nodes.

Note
The function polynomial_transfer_supported() can be used to check if the given polynomial coarsening strategy is supported.

◆ reinit()

template<int dim, typename Number >
void MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::reinit ( const DoFHandler< dim > &  dof_handler_fine,
const DoFHandler< dim > &  dof_handler_coarse,
const AffineConstraints< Number > &  constraint_fine = AffineConstraints< Number >(),
const AffineConstraints< Number > &  constraint_coarse = AffineConstraints< Number >(),
const unsigned int  mg_level_fine = numbers::invalid_unsigned_int,
const unsigned int  mg_level_coarse = numbers::invalid_unsigned_int 
)

Set up transfer operator between the given DoFHandler objects ( dof_handler_fine and dof_handler_coarse). Depending on the underlying Triangulation objects polynomial or geometrical global coarsening is performed.

Note
While geometric transfer can be only performed on active levels (numbers::invalid_unsigned_int), polynomial transfers can also be performed on coarse-grid levels, i.e., levels without hanging nodes.
The function polynomial_transfer_supported() can be used to check if the given polynomial coarsening strategy is supported.

◆ fast_polynomial_transfer_supported()

template<int dim, typename Number >
static bool MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::fast_polynomial_transfer_supported ( const unsigned int  fe_degree_fine,
const unsigned int  fe_degree_coarse 
)
static

Check if a fast templated version of the polynomial transfer between fe_degree_fine and fe_degree_coarse is available.

Note
Currently, the polynomial coarsening strategies: 1) go-to-one, 2) bisect, and 3) decrease-by-one are precompiled with templates for degrees up to 9.

◆ interpolate()

template<int dim, typename Number >
void MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::interpolate ( LinearAlgebra::distributed::Vector< Number > &  dst,
const LinearAlgebra::distributed::Vector< Number > &  src 
) const
overridevirtual

Perform interpolation of a solution vector from the fine level to the coarse level. This function is different from restriction, where a weighted residual is transferred to a coarser level (transposition of prolongation matrix). In other words, restriction acts on right hand side vectors, whereas interpolation acts on solution vectors.

Implements MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >.

◆ enable_inplace_operations_if_possible()

template<int dim, typename Number >
void MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::enable_inplace_operations_if_possible ( const std::shared_ptr< const Utilities::MPI::Partitioner > &  partitioner_coarse,
const std::shared_ptr< const Utilities::MPI::Partitioner > &  partitioner_fine 
)
overridevirtual

Enable inplace vector operations if external and internal vectors are compatible.

Implements MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >.

◆ memory_consumption()

template<int dim, typename Number >
std::size_t MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::memory_consumption ( ) const
overridevirtual

Return the memory consumption of the allocated memory in this class.

Implements MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >.

◆ prolongate_and_add_internal()

template<int dim, typename Number >
void MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::prolongate_and_add_internal ( LinearAlgebra::distributed::Vector< Number > &  dst,
const LinearAlgebra::distributed::Vector< Number > &  src 
) const
overrideprotectedvirtual

Perform prolongation on vectors with correct ghosting.

Implements MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >.

◆ restrict_and_add_internal()

template<int dim, typename Number >
void MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::restrict_and_add_internal ( LinearAlgebra::distributed::Vector< Number > &  dst,
const LinearAlgebra::distributed::Vector< Number > &  src 
) const
overrideprotectedvirtual

Perform restriction on vectors with correct ghosting.

Implements MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >.

◆ prolongate_and_add()

template<typename Number >
void MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::prolongate_and_add ( VectorType dst,
const VectorType src 
) const
inherited

Perform prolongation on a solution vector.

◆ restrict_and_add()

template<typename Number >
void MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::restrict_and_add ( VectorType dst,
const VectorType src 
) const
inherited

Perform restriction on a residual vector.

◆ update_ghost_values()

template<typename Number >
void MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::update_ghost_values ( const LinearAlgebra::distributed::Vector< Number > &  vec) const
protectedinherited

A wrapper around update_ghost_values() optimized in case the present vector has the same parallel layout of one of the external partitioners.

◆ compress()

template<typename Number >
void MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::compress ( LinearAlgebra::distributed::Vector< Number > &  vec,
const VectorOperation::values  op 
) const
protectedinherited

A wrapper around compress() optimized in case the present vector has the same parallel layout of one of the external partitioners.

◆ zero_out_ghost_values()

template<typename Number >
void MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::zero_out_ghost_values ( const LinearAlgebra::distributed::Vector< Number > &  vec) const
protectedinherited

A wrapper around zero_out_ghost_values() optimized in case the present vector has the same parallel layout of one of the external partitioners.

◆ internal_enable_inplace_operations_if_possible()

template<typename Number >
template<int dim, std::size_t width, typename IndexType >
void MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::internal_enable_inplace_operations_if_possible ( const std::shared_ptr< const Utilities::MPI::Partitioner > &  partitioner_coarse,
const std::shared_ptr< const Utilities::MPI::Partitioner > &  partitioner_fine,
bool vec_fine_needs_ghost_update,
internal::MatrixFreeFunctions::ConstraintInfo< dim, VectorizedArray< Number, width >, IndexType > &  constraint_info_coarse,
std::vector< unsigned int > &  dof_indices_fine 
)
protectedinherited

Enable inplace vector operations if external and internal vectors are compatible.

◆ subscribe()

void Subscriptor::subscribe ( std::atomic< bool > *const  validity,
const std::string &  identifier = "" 
) const
inherited

Subscribes a user of the object by storing the pointer validity. The subscriber may be identified by text supplied as identifier.

Definition at line 135 of file subscriptor.cc.

◆ unsubscribe()

void Subscriptor::unsubscribe ( std::atomic< bool > *const  validity,
const std::string &  identifier = "" 
) const
inherited

Unsubscribes a user from the object.

Note
The identifier and the validity pointer must be the same as the one supplied to subscribe().

Definition at line 155 of file subscriptor.cc.

◆ n_subscriptions()

unsigned int Subscriptor::n_subscriptions ( ) const
inlineinherited

Return the present number of subscriptions to this object. This allows to use this class for reference counted lifetime determination where the last one to unsubscribe also deletes the object.

Definition at line 300 of file subscriptor.h.

◆ list_subscribers() [1/2]

template<typename StreamType >
void Subscriptor::list_subscribers ( StreamType &  stream) const
inlineinherited

List the subscribers to the input stream.

Definition at line 317 of file subscriptor.h.

◆ list_subscribers() [2/2]

void Subscriptor::list_subscribers ( ) const
inherited

List the subscribers to deallog.

Definition at line 203 of file subscriptor.cc.

◆ serialize()

template<class Archive >
void Subscriptor::serialize ( Archive &  ar,
const unsigned int  version 
)
inlineinherited

Read or write the data of this object to or from a stream for the purpose of serialization using the BOOST serialization library.

This function does not actually serialize any of the member variables of this class. The reason is that what this class stores is only who subscribes to this object, but who does so at the time of storing the contents of this object does not necessarily have anything to do with who subscribes to the object when it is restored. Consequently, we do not want to overwrite the subscribers at the time of restoring, and then there is no reason to write the subscribers out in the first place.

Definition at line 309 of file subscriptor.h.

◆ check_no_subscribers()

void Subscriptor::check_no_subscribers ( ) const
privatenoexceptinherited

Check that there are no objects subscribing to this object. If this check passes then it is safe to destroy the current object. It this check fails then this function will either abort or print an error message to deallog (by using the AssertNothrow mechanism), but will not throw an exception.

Note
Since this function is just a consistency check it does nothing in release mode.
If this function is called when there is an uncaught exception then, rather than aborting, this function prints an error message to the standard error stream and returns.

Definition at line 52 of file subscriptor.cc.

Friends And Related Symbol Documentation

◆ internal::MGTwoLevelTransferImplementation

template<int dim, typename Number >
friend class internal::MGTwoLevelTransferImplementation
friend

Definition at line 725 of file mg_transfer_global_coarsening.h.

◆ MGTransferMF< dim, Number >

template<int dim, typename Number >
friend class MGTransferMF< dim, Number >
friend

Definition at line 725 of file mg_transfer_global_coarsening.h.

Member Data Documentation

◆ schemes

template<int dim, typename Number >
std::vector<MGTransferScheme> MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::schemes
private

Transfer schemes.

Definition at line 682 of file mg_transfer_global_coarsening.h.

◆ constraint_info_coarse

template<int dim, typename Number >
internal::MatrixFreeFunctions:: ConstraintInfo<dim, VectorizedArrayType, types::global_dof_index> MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::constraint_info_coarse
private

Helper class for reading from and writing to global coarse vectors and for applying constraints.

Definition at line 690 of file mg_transfer_global_coarsening.h.

◆ constraint_info_fine

template<int dim, typename Number >
internal::MatrixFreeFunctions:: ConstraintInfo<dim, VectorizedArrayType, types::global_dof_index> MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::constraint_info_fine
private

Helper class for reading from and writing to global fine vectors.

Definition at line 697 of file mg_transfer_global_coarsening.h.

◆ weights

template<int dim, typename Number >
std::vector<Number> MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::weights
private

Weights for continuous elements.

Definition at line 702 of file mg_transfer_global_coarsening.h.

◆ weights_compressed

template<int dim, typename Number >
AlignedVector<VectorizedArrayType> MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::weights_compressed
private

Weights for continuous elements, compressed into 3^dim doubles per cell if possible.

Definition at line 708 of file mg_transfer_global_coarsening.h.

◆ n_components

template<int dim, typename Number >
unsigned int MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::n_components
private

Number of components.

Definition at line 713 of file mg_transfer_global_coarsening.h.

◆ dof_handler_fine

template<int dim, typename Number >
SmartPointer<const DoFHandler<dim> > MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::dof_handler_fine
private

Pointer to the DoFHandler object used during initialization.

Definition at line 718 of file mg_transfer_global_coarsening.h.

◆ mg_level_fine

template<int dim, typename Number >
unsigned int MGTwoLevelTransfer< dim, LinearAlgebra::distributed::Vector< Number > >::mg_level_fine
private

Muligird level used during initialization.

Definition at line 723 of file mg_transfer_global_coarsening.h.

◆ fine_element_is_continuous

template<typename Number >
bool MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::fine_element_is_continuous
protectedinherited

Flag if the finite elements on the fine cells are continuous. If yes, the multiplicity of DoF sharing a vertex/line as well as constraints have to be taken into account via weights.

Definition at line 380 of file mg_transfer_global_coarsening.h.

◆ partitioner_coarse

template<typename Number >
std::shared_ptr<const Utilities::MPI::Partitioner> MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::partitioner_coarse
inherited

Partitioner needed by the intermediate vector.

Definition at line 386 of file mg_transfer_global_coarsening.h.

◆ partitioner_fine

template<typename Number >
std::shared_ptr<const Utilities::MPI::Partitioner> MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::partitioner_fine
inherited

Partitioner needed by the intermediate vector.

Definition at line 391 of file mg_transfer_global_coarsening.h.

◆ vec_coarse

template<typename Number >
LinearAlgebra::distributed::Vector<Number> MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::vec_coarse
mutableprotectedinherited

Internal vector on that the actual prolongation/restriction is performed.

Definition at line 397 of file mg_transfer_global_coarsening.h.

◆ vec_fine

template<typename Number >
LinearAlgebra::distributed::Vector<Number> MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::vec_fine
mutableprotectedinherited

Internal vector needed for collecting all degrees of freedom of the fine cells. It is only initialized if the fine-level DoF indices touch DoFs other than the locally active ones (which we always assume can be accessed by the given vectors in the prolongate/restrict functions), otherwise it is left at size zero.

Definition at line 406 of file mg_transfer_global_coarsening.h.

◆ vec_fine_needs_ghost_update

template<typename Number >
bool MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::vec_fine_needs_ghost_update
protectedinherited

Bool indicating whether fine vector has relevant ghost values.

Definition at line 411 of file mg_transfer_global_coarsening.h.

◆ partitioner_coarse_embedded

template<typename Number >
std::shared_ptr<const Utilities::MPI::Partitioner> MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::partitioner_coarse_embedded
protectedinherited

Embedded partitioner for efficient communication if locally relevant DoFs are a subset of an external Partitioner object.

Definition at line 418 of file mg_transfer_global_coarsening.h.

◆ partitioner_fine_embedded

template<typename Number >
std::shared_ptr<const Utilities::MPI::Partitioner> MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::partitioner_fine_embedded
protectedinherited

Embedded partitioner for efficient communication if locally relevant DoFs are a subset of an external Partitioner object.

Definition at line 424 of file mg_transfer_global_coarsening.h.

◆ buffer_coarse_embedded

template<typename Number >
AlignedVector<Number> MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::buffer_coarse_embedded
mutableprotectedinherited

Buffer for efficient communication if locally relevant DoFs are a subset of an external Partitioner object.

Definition at line 430 of file mg_transfer_global_coarsening.h.

◆ buffer_fine_embedded

template<typename Number >
AlignedVector<Number> MGTwoLevelTransferBase< LinearAlgebra::distributed::Vector< Number > >::buffer_fine_embedded
mutableprotectedinherited

Buffer for efficient communication if locally relevant DoFs are a subset of an external Partitioner object.

Definition at line 436 of file mg_transfer_global_coarsening.h.

◆ counter

std::atomic<unsigned int> Subscriptor::counter
mutableprivateinherited

Store the number of objects which subscribed to this object. Initially, this number is zero, and upon destruction it shall be zero again (i.e. all objects which subscribed should have unsubscribed again).

The creator (and owner) of an object is counted in the map below if HE manages to supply identification.

We use the mutable keyword in order to allow subscription to constant objects also.

This counter may be read from and written to concurrently in multithreaded code: hence we use the std::atomic class template.

Definition at line 218 of file subscriptor.h.

◆ counter_map

std::map<std::string, unsigned int> Subscriptor::counter_map
mutableprivateinherited

In this map, we count subscriptions for each different identification string supplied to subscribe().

Definition at line 224 of file subscriptor.h.

◆ validity_pointers

std::vector<std::atomic<bool> *> Subscriptor::validity_pointers
mutableprivateinherited

In this vector, we store pointers to the validity bool in the SmartPointer objects that subscribe to this class.

Definition at line 240 of file subscriptor.h.

◆ object_info

const std::type_info* Subscriptor::object_info
mutableprivateinherited

Pointer to the typeinfo object of this object, from which we can later deduce the class name. Since this information on the derived class is neither available in the destructor, nor in the constructor, we obtain it in between and store it here.

Definition at line 248 of file subscriptor.h.

◆ mutex

std::mutex Subscriptor::mutex
staticprivateinherited

A mutex used to ensure data consistency when accessing the mutable members of this class. This lock is used in the subscribe() and unsubscribe() functions, as well as in list_subscribers().

Definition at line 271 of file subscriptor.h.


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