Reference documentation for deal.II version 9.5.0
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Public Member Functions | Static Public Member Functions | Protected Attributes | Private Types | Private Member Functions | Private Attributes | Static Private Attributes | List of all members
MeshWorker::VectorSelector Class Reference
Integrators » The MeshWorker interface

#include <deal.II/meshworker/vector_selector.h>

Inheritance diagram for MeshWorker::VectorSelector:
[legend]

Public Member Functions

void add (const std::string &name, const bool values=true, const bool gradients=false, const bool hessians=false)
 
void initialize (const AnyData &)
 
bool empty () const
 
bool has_values () const
 
bool has_gradients () const
 
bool has_hessians () const
 
unsigned int n_values () const
 
unsigned int n_gradients () const
 
unsigned int n_hessians () const
 
unsigned int value_index (const unsigned int i) const
 
unsigned int gradient_index (const unsigned int i) const
 
unsigned int hessian_index (const unsigned int i) const
 
template<class StreamType , typename DATA >
void print (StreamType &s, const AnyData &v) const
 
template<class StreamType >
void print (StreamType &s) const
 
std::size_t memory_consumption () 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 ::ExceptionBase & ExcInUse (int arg1, std::string arg2, std::string arg3)
 
static ::ExceptionBase & ExcNoSubscriber (std::string arg1, std::string arg2)
 

Protected Attributes

NamedSelection value_selection
 
NamedSelection gradient_selection
 
NamedSelection hessian_selection
 

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::atomic< unsigned int > counter
 
std::map< std::string, unsigned int > counter_map
 
std::vector< std::atomic< bool > * > validity_pointers
 
const std::type_info * object_info
 

Static Private Attributes

static std::mutex mutex
 

Detailed Description

A class that selects vectors from a list of named vectors.

Since the number of vectors in an AnyData object may grow with every nesting of applications or loops, it is important to be able to select those, which are actually used in computing residuals etc. This class organizes the selection.

It is used for instance in IntegrationWorker to determine which values, derivatives or second derivatives are actually computed.

Definition at line 51 of file vector_selector.h.

Member Typedef Documentation

◆ map_value_type

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

The data type used in counter_map.

Definition at line 230 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 235 of file subscriptor.h.

Member Function Documentation

◆ add()

void MeshWorker::VectorSelector::add ( const std::string &  name,
const bool  values = true,
const bool  gradients = false,
const bool  hessians = false 
)
inline

Add a vector to the selection of finite element functions. The arguments are the name of the vector and indicators, which information is to be extracted from the vector. The name refers to an entry in a AnyData object, which will be identified by initialize(). The three bool parameters indicate, whether values, gradients and Hessians of the finite element function are to be computed on each cell or face.

Definition at line 420 of file vector_selector.h.

◆ initialize()

void MeshWorker::VectorSelector::initialize ( const AnyData &  src)
inline

Does the same as the function above but it is possible to select a block of the global vector. Initialize the selection field with a data vector. While add() only enters the names of vectors, which will be used in the integration loop over cells and faces, this function links the names to actual vectos in a AnyData object.

Note
This function caches the index associated with a name. Therefore, it must be called every time after the AnyData object has changed.

Definition at line 446 of file vector_selector.h.

◆ empty()

bool MeshWorker::VectorSelector::empty ( ) const
inline

Check whether any vector is selected.

Definition at line 454 of file vector_selector.h.

◆ has_values()

bool MeshWorker::VectorSelector::has_values ( ) const
inline

Return true if values are selected for any vector.

Definition at line 462 of file vector_selector.h.

◆ has_gradients()

bool MeshWorker::VectorSelector::has_gradients ( ) const
inline

Return true if gradients are selected for any vector.

Definition at line 469 of file vector_selector.h.

◆ has_hessians()

bool MeshWorker::VectorSelector::has_hessians ( ) const
inline

Return true if hessians are selected for any vector.

Definition at line 476 of file vector_selector.h.

◆ n_values()

unsigned int MeshWorker::VectorSelector::n_values ( ) const
inline

Number of vectors for values

Definition at line 483 of file vector_selector.h.

◆ n_gradients()

unsigned int MeshWorker::VectorSelector::n_gradients ( ) const
inline

Number of vectors for gradients

Definition at line 490 of file vector_selector.h.

◆ n_hessians()

unsigned int MeshWorker::VectorSelector::n_hessians ( ) const
inline

Number of vectors for Hessians

Definition at line 497 of file vector_selector.h.

◆ value_index()

unsigned int MeshWorker::VectorSelector::value_index ( const unsigned int  i) const
inline

The vector index for the ith value

Definition at line 504 of file vector_selector.h.

◆ gradient_index()

unsigned int MeshWorker::VectorSelector::gradient_index ( const unsigned int  i) const
inline

The vector index for the ith gradient

Definition at line 511 of file vector_selector.h.

◆ hessian_index()

unsigned int MeshWorker::VectorSelector::hessian_index ( const unsigned int  i) const
inline

The vector index for the ith Hessian

Definition at line 518 of file vector_selector.h.

◆ print() [1/2]

template<class StreamType , typename DATA >
void MeshWorker::VectorSelector::print ( StreamType &  s,
const AnyData &  v 
) const
inline

Print the contents of the selection to the stream.

Definition at line 535 of file vector_selector.h.

◆ print() [2/2]

template<class StreamType >
void MeshWorker::VectorSelector::print ( StreamType &  s) const
inline

Print the number of selections to the stream.

Definition at line 526 of file vector_selector.h.

◆ memory_consumption()

std::size_t MeshWorker::VectorSelector::memory_consumption ( ) const
inline

The memory used by this object.

Definition at line 551 of file vector_selector.h.

◆ 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 136 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 156 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 204 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 53 of file subscriptor.cc.

Member Data Documentation

◆ value_selection

NamedSelection MeshWorker::VectorSelector::value_selection
protected

Selection of the vectors used to compute values.

Definition at line 174 of file vector_selector.h.

◆ gradient_selection

NamedSelection MeshWorker::VectorSelector::gradient_selection
protected

Selection of the vectors used to compute gradients.

Definition at line 179 of file vector_selector.h.

◆ hessian_selection

NamedSelection MeshWorker::VectorSelector::hessian_selection
protected

Selection of the vectors used to compute hessians.

Definition at line 184 of file vector_selector.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 219 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 225 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 241 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 249 of file subscriptor.h.

◆ mutex

std::mutex Subscriptor::mutex
staticprivateinherited

A mutex used to ensure data consistency when printing out the list of subscribers.

Definition at line 271 of file subscriptor.h.

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