libMesh::TensorShellMatrix< T > Class Template Reference

#include <tensor_shell_matrix.h>

Inheritance diagram for libMesh::TensorShellMatrix< T >:

[legend]

List of all members.

Public Member Functions
	TensorShellMatrix (const NumericVector< T > &v, const NumericVector< T > &w)
virtual	~TensorShellMatrix ()
virtual numeric_index_type	m () const
virtual numeric_index_type	n () const
virtual void	vector_mult (NumericVector< T > &dest, const NumericVector< T > &arg) const
virtual void	vector_mult_add (NumericVector< T > &dest, const NumericVector< T > &arg) const
virtual void	get_diagonal (NumericVector< T > &dest) const
Static Public Member Functions
static std::string	get_info ()
static void	print_info (std::ostream &out=libMesh::out)
static unsigned int	n_objects ()
static void	enable_print_counter_info ()
static void	disable_print_counter_info ()
Protected Types
typedef std::map< std::string, std::pair< unsigned int, unsigned int > >	Counts
Protected Member Functions
void	increment_constructor_count (const std::string &name)
void	increment_destructor_count (const std::string &name)
Protected Attributes
const NumericVector< T > &	_v
const NumericVector< T > &	_w
Static Protected Attributes
static Counts	_counts
static Threads::atomic < unsigned int >	_n_objects
static Threads::spin_mutex	_mutex
static bool	_enable_print_counter = true

---

Detailed Description

template<typename T>
class libMesh::TensorShellMatrix< T >

Shell matrix that is given by a tensor of two vectors, i.e. A = v*w^T.

Author:

Tim Kroeger, 2008

Definition at line 42 of file tensor_shell_matrix.h.

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Member Typedef Documentation

typedef std::map<std::string, std::pair<unsigned int, unsigned int> > libMesh::ReferenceCounter::Counts [protected, inherited]

Data structure to log the information. The log is identified by the class name.

Definition at line 113 of file reference_counter.h.

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Constructor & Destructor Documentation

template<typename T >

libMesh::TensorShellMatrix< T >::TensorShellMatrix	(	const NumericVector< T > &	v,
		const NumericVector< T > &	w
	)			[inline]

Constructor; takes references to the two vectors as arguments. The vectors themselves have to be stored elsewhere.

Definition at line 106 of file tensor_shell_matrix.h.

                                                                   :
  ShellMatrix<T>(),
  _v(v),
  _w(w)
{}

template<typename T >

libMesh::TensorShellMatrix< T >::~TensorShellMatrix

(

)

[inline, virtual]

Destructor.

Definition at line 117 of file tensor_shell_matrix.h.

{}

---

Member Function Documentation

void libMesh::ReferenceCounter::disable_print_counter_info

(

)

[static, inherited]

Definition at line 106 of file reference_counter.C.

References libMesh::ReferenceCounter::_enable_print_counter.

{
  _enable_print_counter = false;
  return;
}

void libMesh::ReferenceCounter::enable_print_counter_info

(

)

[static, inherited]

Methods to enable/disable the reference counter output from print_info()

Definition at line 100 of file reference_counter.C.

References libMesh::ReferenceCounter::_enable_print_counter.

{
  _enable_print_counter = true;
  return;
}

template<typename T >

void libMesh::TensorShellMatrix< T >::get_diagonal

(

NumericVector< T > &

dest

)

const [inline, virtual]

Copies the diagonal part of the matrix into dest.

Implements libMesh::ShellMatrix< T >.

Definition at line 46 of file tensor_shell_matrix.C.

References libMesh::TensorShellMatrix< T >::_v, libMesh::TensorShellMatrix< T >::_w, and libMesh::NumericVector< T >::pointwise_mult().

{
  dest.pointwise_mult(_v,_w);
}

std::string libMesh::ReferenceCounter::get_info

(

)

[static, inherited]

Gets a string containing the reference information.

Definition at line 47 of file reference_counter.C.

References libMesh::ReferenceCounter::_counts, and libMesh::Quality::name().

Referenced by libMesh::ReferenceCounter::print_info().

{
#if defined(LIBMESH_ENABLE_REFERENCE_COUNTING) && defined(DEBUG)

  std::ostringstream oss;

  oss << '\n'
      << " ---------------------------------------------------------------------------- \n"
      << "| Reference count information                                                |\n"
      << " ---------------------------------------------------------------------------- \n";

  for (Counts::iterator it = _counts.begin();
       it != _counts.end(); ++it)
    {
      const std::string name(it->first);
      const unsigned int creations    = it->second.first;
      const unsigned int destructions = it->second.second;

      oss << "| " << name << " reference count information:\n"
          << "|  Creations:    " << creations    << '\n'
          << "|  Destructions: " << destructions << '\n';
    }

  oss << " ---------------------------------------------------------------------------- \n";

  return oss.str();

#else

  return "";

#endif
}

void libMesh::ReferenceCounter::increment_constructor_count

(

const std::string &

name

)

[inline, protected, inherited]

Increments the construction counter. Should be called in the constructor of any derived class that will be reference counted.

Definition at line 163 of file reference_counter.h.

References libMesh::ReferenceCounter::_counts, and libMesh::Threads::spin_mtx.

Referenced by libMesh::ReferenceCountedObject< RBParametrized >::ReferenceCountedObject().

{
  Threads::spin_mutex::scoped_lock lock(Threads::spin_mtx);
  std::pair<unsigned int, unsigned int>& p = _counts[name];

  p.first++;
}

void libMesh::ReferenceCounter::increment_destructor_count

(

const std::string &

name

)

[inline, protected, inherited]

Increments the destruction counter. Should be called in the destructor of any derived class that will be reference counted.

Definition at line 176 of file reference_counter.h.

References libMesh::ReferenceCounter::_counts, and libMesh::Threads::spin_mtx.

Referenced by libMesh::ReferenceCountedObject< RBParametrized >::~ReferenceCountedObject().

{
  Threads::spin_mutex::scoped_lock lock(Threads::spin_mtx);
  std::pair<unsigned int, unsigned int>& p = _counts[name];

  p.second++;
}

template<typename T >

numeric_index_type libMesh::TensorShellMatrix< T >::m

(

)

const [inline, virtual]

Returns:

m, the row-dimension of the matrix where the marix is .

Implements libMesh::ShellMatrix< T >.

Definition at line 124 of file tensor_shell_matrix.h.

References libMesh::TensorShellMatrix< T >::_v.

{
  return _v.size();
}

template<typename T >

numeric_index_type libMesh::TensorShellMatrix< T >::n

(

)

const [inline, virtual]

Returns:

n, the column-dimension of the matrix where the marix is .

Implements libMesh::ShellMatrix< T >.

Definition at line 133 of file tensor_shell_matrix.h.

References libMesh::TensorShellMatrix< T >::_w.

{
  return _w.size();
}

static unsigned int libMesh::ReferenceCounter::n_objects

(

)

[inline, static, inherited]

Prints the number of outstanding (created, but not yet destroyed) objects.

Definition at line 79 of file reference_counter.h.

References libMesh::ReferenceCounter::_n_objects.

  { return _n_objects; }

void libMesh::ReferenceCounter::print_info

(

std::ostream &

out = libMesh::out

)

[static, inherited]

Prints the reference information, by default to libMesh::out.

Definition at line 88 of file reference_counter.C.

References libMesh::ReferenceCounter::_enable_print_counter, and libMesh::ReferenceCounter::get_info().

{
  if( _enable_print_counter ) out_stream << ReferenceCounter::get_info();
}

template<typename T >

void libMesh::TensorShellMatrix< T >::vector_mult	(	NumericVector< T > &	dest,
		const NumericVector< T > &	arg
	)			const [inline, virtual]

Multiplies the matrix with arg and stores the result in dest.

Implements libMesh::ShellMatrix< T >.

Definition at line 27 of file tensor_shell_matrix.C.

References libMesh::TensorShellMatrix< T >::_v, libMesh::TensorShellMatrix< T >::_w, and libMesh::NumericVector< T >::scale().

{
  dest = _v;
  dest.scale(_w.dot(arg));
}

template<typename T >

void libMesh::TensorShellMatrix< T >::vector_mult_add	(	NumericVector< T > &	dest,
		const NumericVector< T > &	arg
	)			const [inline, virtual]

Multiplies the matrix with arg and adds the result to dest.

Implements libMesh::ShellMatrix< T >.

Definition at line 37 of file tensor_shell_matrix.C.

References libMesh::TensorShellMatrix< T >::_v, libMesh::TensorShellMatrix< T >::_w, and libMesh::NumericVector< T >::add().

{
  dest.add(_w.dot(arg),_v);
}

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Member Data Documentation

ReferenceCounter::Counts libMesh::ReferenceCounter::_counts [static, protected, inherited]

Actually holds the data.

Definition at line 118 of file reference_counter.h.

Referenced by libMesh::ReferenceCounter::get_info(), libMesh::ReferenceCounter::increment_constructor_count(), and libMesh::ReferenceCounter::increment_destructor_count().

bool libMesh::ReferenceCounter::_enable_print_counter = true [static, protected, inherited]

Flag to control whether reference count information is printed when print_info is called.

Definition at line 137 of file reference_counter.h.

Referenced by libMesh::ReferenceCounter::disable_print_counter_info(), libMesh::ReferenceCounter::enable_print_counter_info(), and libMesh::ReferenceCounter::print_info().

Threads::spin_mutex libMesh::ReferenceCounter::_mutex [static, protected, inherited]

Mutual exclusion object to enable thread-safe reference counting.

Definition at line 131 of file reference_counter.h.

Threads::atomic< unsigned int > libMesh::ReferenceCounter::_n_objects [static, protected, inherited]

The number of objects. Print the reference count information when the number returns to 0.

Definition at line 126 of file reference_counter.h.

Referenced by libMesh::ReferenceCounter::n_objects(), libMesh::ReferenceCounter::ReferenceCounter(), and libMesh::ReferenceCounter::~ReferenceCounter().

template<typename T >

const NumericVector<T>& libMesh::TensorShellMatrix< T >::_v [protected]

The column vector.

Definition at line 91 of file tensor_shell_matrix.h.

Referenced by libMesh::TensorShellMatrix< T >::get_diagonal(), libMesh::TensorShellMatrix< T >::m(), libMesh::TensorShellMatrix< T >::vector_mult(), and libMesh::TensorShellMatrix< T >::vector_mult_add().

template<typename T >

const NumericVector<T>& libMesh::TensorShellMatrix< T >::_w [protected]

The row vector.

Definition at line 96 of file tensor_shell_matrix.h.

Referenced by libMesh::TensorShellMatrix< T >::get_diagonal(), libMesh::TensorShellMatrix< T >::n(), libMesh::TensorShellMatrix< T >::vector_mult(), and libMesh::TensorShellMatrix< T >::vector_mult_add().

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

• tensor_shell_matrix.h
• tensor_shell_matrix.C