#include <deal.II/lac/block_vector_base.h>

Inheritance diagram for BlockVectorBase< VectorType >:

Public Types
using	BlockType = VectorType

using	value_type = typename BlockType::value_type

using	pointer = value_type *

using	const_pointer = const value_type *

using	iterator = ::internal::BlockVectorIterators::Iterator< BlockVectorBase, false >

using	const_iterator = ::internal::BlockVectorIterators::Iterator< BlockVectorBase, true >

using	reference = typename BlockType::reference

using	const_reference = typename BlockType::const_reference

using	size_type = types::global_dof_index

using	real_type = typename BlockType::real_type

Public Member Functions
	BlockVectorBase ()=default

	BlockVectorBase (const BlockVectorBase &)=default

	BlockVectorBase (BlockVectorBase &&) noexcept=default

void	collect_sizes ()

void	compress (::VectorOperation::values operation)

BlockType &	block (const unsigned int i)

const BlockType &	block (const unsigned int i) const

const BlockIndices &	get_block_indices () const

unsigned int	n_blocks () const

std::size_t	size () const

std::size_t	locally_owned_size () const

IndexSet	locally_owned_elements () const

iterator	begin ()

const_iterator	begin () const

iterator	end ()

const_iterator	end () const

value_type	operator() (const size_type i) const

reference	operator() (const size_type i)

value_type	operator[] (const size_type i) const

reference	operator[] (const size_type i)

template<typename OtherNumber >
void	extract_subvector_to (const std::vector< size_type > &indices, std::vector< OtherNumber > &values) const

template<typename ForwardIterator , typename OutputIterator >
void	extract_subvector_to (ForwardIterator indices_begin, const ForwardIterator indices_end, OutputIterator values_begin) const

BlockVectorBase &	operator= (const value_type s)

BlockVectorBase &	operator= (const BlockVectorBase &V)

BlockVectorBase &	operator= (BlockVectorBase &&)=default

template<class VectorType2 >
BlockVectorBase &	operator= (const BlockVectorBase< VectorType2 > &V)

BlockVectorBase &	operator= (const VectorType &v)

template<class VectorType2 >
bool	operator== (const BlockVectorBase< VectorType2 > &v) const

value_type	operator* (const BlockVectorBase &V) const

real_type	norm_sqr () const

value_type	mean_value () const

real_type	l1_norm () const

real_type	l2_norm () const

real_type	linfty_norm () const

value_type	add_and_dot (const value_type a, const BlockVectorBase &V, const BlockVectorBase &W)

bool	in_local_range (const size_type global_index) const

bool	all_zero () const

bool	is_non_negative () const

BlockVectorBase &	operator+= (const BlockVectorBase &V)

BlockVectorBase &	operator-= (const BlockVectorBase &V)

template<typename Number >
void	add (const std::vector< size_type > &indices, const std::vector< Number > &values)

template<typename Number >
void	add (const std::vector< size_type > &indices, const Vector< Number > &values)

template<typename Number >
void	add (const size_type n_elements, const size_type indices, const Number values)

void	add (const value_type s)

void	add (const value_type a, const BlockVectorBase &V)

void	add (const value_type a, const BlockVectorBase &V, const value_type b, const BlockVectorBase &W)

void	sadd (const value_type s, const BlockVectorBase &V)

void	sadd (const value_type s, const value_type a, const BlockVectorBase &V)

void	sadd (const value_type s, const value_type a, const BlockVectorBase &V, const value_type b, const BlockVectorBase &W)

void	sadd (const value_type s, const value_type a, const BlockVectorBase &V, const value_type b, const BlockVectorBase &W, const value_type c, const BlockVectorBase &X)

BlockVectorBase &	operator*= (const value_type factor)

BlockVectorBase &	operator/= (const value_type factor)

template<class BlockVector2 >
void	scale (const BlockVector2 &v)

template<class BlockVector2 >
void	equ (const value_type a, const BlockVector2 &V)

void	update_ghost_values () const

std::size_t	memory_consumption () const

Protected Attributes
std::vector< VectorType >	components

BlockIndices	block_indices

Friends
template<typename N , bool C>
class	::internal::BlockVectorIterators::Iterator

template<typename >
class	BlockVectorBase

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

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

using	map_value_type = decltype(counter_map)::value_type

using	map_iterator = decltype(counter_map)::iterator

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 std::mutex	mutex

static ::ExceptionBase &	ExcInUse (int arg1, std::string arg2, std::string arg3)

static ::ExceptionBase &	ExcNoSubscriber (std::string arg1, std::string arg2)

void	check_no_subscribers () const noexcept

Detailed Description

template<class VectorType>
class BlockVectorBase< VectorType >

A vector composed of several blocks each representing a vector of its own.

The BlockVector is a collection of vectors of a given type (e.g., deal.II Vector objects, PETScWrappers::MPI::Vector objects, etc.). Each of the vectors inside can have a different size.

The functionality of BlockVector includes everything a Vector can do, plus the access to a single Vector inside the BlockVector by block(i). It also has a complete random access iterator, just as the other Vector classes or the standard C++ library template std::vector. Therefore, all algorithms working on iterators also work with objects of this class.

While this base class implements most of the functionality by dispatching calls to its member functions to the respective functions on each of the individual blocks, this class does not actually allocate some memory or change the size of vectors. For this, the constructors, assignment operators and reinit() functions of derived classes are responsible. This class only handles the common part that is independent of the actual vector type the block vector is built on.

Accessing individual blocks, and resizing vectors

Apart from using this object as a whole, you can use each block separately as a vector, using the block() function. There is a single caveat: if you have changed the size of one or several blocks, you must call the function collect_sizes() of the block vector to update its internal structures.

Attention: Warning: If you change the sizes of single blocks without calling collect_sizes(), results may be unpredictable. The debug version does not check consistency here for performance reasons!

See also: Block (linear algebra)

Definition at line 435 of file block_vector_base.h.

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

include/deal.II/lac/block_vector_base.h

Public Types

Public Member Functions

Protected Attributes

Friends

Subscriptor functionality

Detailed Description

Accessing individual blocks, and resizing vectors