Reference documentation for deal.II version GIT relicensing-31-gf283a0fc39 2024-02-29 06:50:02+00:00
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Public Member Functions | Static Public Member Functions | Private Types | Private Member Functions | Private Attributes | Static Private Attributes | List of all members
hp::MappingCollection< dim, spacedim > Class Template Reference

#include <deal.II/hp/mapping_collection.h>

Inheritance diagram for hp::MappingCollection< dim, spacedim >:
Inheritance graph

Public Member Functions

 MappingCollection ()=default
 MappingCollection (const Mapping< dim, spacedim > &mapping)
template<class... MappingTypes>
 MappingCollection (const MappingTypes &...mappings)
 MappingCollection (const MappingCollection< dim, spacedim > &mapping_collection)
 MappingCollection (MappingCollection< dim, spacedim > &&) noexcept(std::is_nothrow_move_constructible< std::vector< std::shared_ptr< const Mapping< dim, spacedim > > > >::value &&std::is_nothrow_move_constructible< std::function< unsigned int(const typename hp::MappingCollection< dim, spacedim > &, const unsigned int)> >::value)=default
MappingCollection< dim, spacedim > & operator= (MappingCollection< dim, spacedim > &&)=default
void push_back (const Mapping< dim, spacedim > &new_mapping)
void push_back (const std::shared_ptr< const T > &new_entry)
const T & operator[] (const unsigned int index) const
unsigned int size () const
std::size_t memory_consumption () const
CollectionIterator< T > begin () const
CollectionIterator< T > end () 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 ::ExceptionBaseExcInUse (int arg1, std::string arg2, std::string arg3)
static ::ExceptionBaseExcNoSubscriber (std::string arg1, std::string arg2)

Private Types

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< std::shared_ptr< const T > > entries
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

Detailed Description

template<int dim, int spacedim = dim>
class hp::MappingCollection< dim, spacedim >

This class implements a collection of mapping objects in the same way as the hp::FECollection implements a collection of finite element classes.

It implements the concepts stated in the hp-Collections module described in the doxygen documentation.

Although it is recommended to supply an appropriate mapping for each finite element kind used in a hp-computation, the MappingCollection class implements a conversion constructor from a single mapping. Therefore it is possible to offer only a single mapping to the hp::FEValues class instead of a hp::MappingCollection. This is for the convenience of the user, as many simple geometries do not require different mappings along the boundary to achieve optimal convergence rates. Hence providing a single mapping object will usually suffice. See the hp::FEValues class for the rules which mapping will be selected for a given cell.

Definition at line 56 of file mapping_collection.h.

Member Typedef Documentation

◆ map_value_type

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

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

The iterator type used in counter_map.

Definition at line 234 of file subscriptor.h.

Constructor & Destructor Documentation

◆ MappingCollection() [1/5]

template<int dim, int spacedim = dim>
hp::MappingCollection< dim, spacedim >::MappingCollection ( )

Default constructor. Leads to an empty collection that can later be filled using push_back().

◆ MappingCollection() [2/5]

template<int dim, int spacedim>
hp::MappingCollection< dim, spacedim >::MappingCollection ( const Mapping< dim, spacedim > &  mapping)

Conversion constructor. This constructor creates a MappingCollection from a single mapping. More mappings can be added with push_back(), if desired, though it would probably be clearer to add all mappings the same way.

Definition at line 28 of file

◆ MappingCollection() [3/5]

template<int dim, int spacedim>
template<class... MappingTypes>
hp::MappingCollection< dim, spacedim >::MappingCollection ( const MappingTypes &...  mappings)

Constructor. This constructor creates a MappingCollection from one or more mapping objects passed to the constructor. For this call to be valid, all arguments need to be of types derived from class Mapping<dim,spacedim>.

Definition at line 159 of file mapping_collection.h.

◆ MappingCollection() [4/5]

template<int dim, int spacedim>
hp::MappingCollection< dim, spacedim >::MappingCollection ( const MappingCollection< dim, spacedim > &  mapping_collection)

Copy constructor.

Definition at line 37 of file

◆ MappingCollection() [5/5]

template<int dim, int spacedim = dim>
hp::MappingCollection< dim, spacedim >::MappingCollection ( MappingCollection< dim, spacedim > &&  ) const &

Move constructor.

The implementation of standard datatypes may change with different libraries, so their move members may or may not be flagged non-throwing. We need to explicitly set the noexcept specifier according to its member variables to still get the performance benefits (and to satisfy clang-tidy).

Member Function Documentation

◆ operator=()

template<int dim, int spacedim = dim>
MappingCollection< dim, spacedim > & hp::MappingCollection< dim, spacedim >::operator= ( MappingCollection< dim, spacedim > &&  )

Move assignment operator.

◆ push_back() [1/2]

template<int dim, int spacedim>
void hp::MappingCollection< dim, spacedim >::push_back ( const Mapping< dim, spacedim > &  new_mapping)

Add a new mapping to the MappingCollection. Generally, you will want to use the same order for mappings as for the elements of the hp::FECollection object you use. However, the same considerations as discussed with the hp::QCollection::push_back() function also apply in the current context.

This class creates a copy of the given mapping object, i.e., you can do things like push_back(MappingQ<dim>(3));. The internal copy is later destroyed by this object upon destruction of the entire collection.

Definition at line 48 of file

◆ push_back() [2/2]

template<typename T >
void hp::Collection< T >::push_back ( const std::shared_ptr< const T > &  new_entry)

Add a new object.

Definition at line 255 of file collection.h.

◆ operator[]()

template<typename T >
const T & hp::Collection< T >::operator[] ( const unsigned int  index) const

Return the object which was specified by the user for the active FE index which is provided as a parameter to this method.

index must be between zero and the number of elements of the collection.

Definition at line 273 of file collection.h.

◆ size()

template<typename T >
unsigned int hp::Collection< T >::size ( ) const

Return the number of objects stored in this container.

Definition at line 264 of file collection.h.

◆ memory_consumption()

template<typename T >
std::size_t hp::Collection< T >::memory_consumption ( ) const

Determine an estimate for the memory consumption (in bytes) of this object.

Definition at line 246 of file collection.h.

◆ begin()

template<typename T >
CollectionIterator< T > hp::Collection< T >::begin ( ) const
An iterator pointing to the beginning of the underlying data (const version).

Definition at line 283 of file collection.h.

◆ end()

template<typename T >
CollectionIterator< T > hp::Collection< T >::end ( ) const
An iterator pointing to the end of the underlying data (const version).

Definition at line 292 of file collection.h.

◆ subscribe()

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

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

◆ unsubscribe()

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

Unsubscribes a user from the object.

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

Definition at line 155 of file

◆ n_subscriptions()

unsigned int Subscriptor::n_subscriptions ( ) const

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

List the subscribers to the input stream.

Definition at line 317 of file subscriptor.h.

◆ list_subscribers() [2/2]

void Subscriptor::list_subscribers ( ) const

List the subscribers to deallog.

Definition at line 203 of file

◆ serialize()

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

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

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.

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

Member Data Documentation

◆ entries

template<typename T >
std::vector<std::shared_ptr<const T> > hp::Collection< T >::entries

The real container, which stores pointers to the different objects.

Definition at line 236 of file collection.h.

◆ counter

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

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

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

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

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

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 files: