MooseUtils::SharedPool< T > Class Template Reference

Originally From https://stackoverflow.com/a/27837534/2042320. More...

#include <SharedPool.h>

Classes
struct	ExternalDeleter

Public Types
typedef std::unique_ptr< T, ExternalDeleter >	PtrType

Public Member Functions
	SharedPool ()
virtual	~SharedPool ()
void	add (std::unique_ptr< T > t)
template<typename... Args>
PtrType	acquire (Args &&... args)
bool	empty () const
size_t	size () const
size_t	num_created () const

Private Attributes
std::shared_ptr< SharedPool< T > * >	_this_ptr
std::stack< std::unique_ptr< T > >	_pool
size_t	_num_created = 0

Detailed Description

template<class T>
class MooseUtils::SharedPool< T >

Originally From https://stackoverflow.com/a/27837534/2042320.

friedmud added variadic templated perfect forwarding to acquire()

For an object to be resetable it needs to define a reset() function that takes the same arguments as its constructor.

Definition at line 42 of file SharedPool.h.

Member Typedef Documentation

PtrType

template<class T >

typedef std::unique_ptr<T, ExternalDeleter> MooseUtils::SharedPool< T >::PtrType

Definition at line 70 of file SharedPool.h.

Constructor & Destructor Documentation

SharedPool()

template<class T >

MooseUtils::SharedPool< T >::SharedPool ( )

inline

Definition at line 72 of file SharedPool.h.

: _this_ptr(new SharedPool<T> *(this)) {}

~SharedPool()

template<class T >

virtual MooseUtils::SharedPool< T >::~SharedPool ( )

inlinevirtual

Definition at line 73 of file SharedPool.h.

{}

Member Function Documentation

acquire()

template<class T >

template<typename... Args>

PtrType MooseUtils::SharedPool< T >::acquire ( Args &&...  args )

inline

Definition at line 78 of file SharedPool.h.

  {
    // if the pool is empty - create one
    if (_pool.empty())
    {
      _num_created++;
      return PtrType(new T(std::forward<Args>(args)...),
                     ExternalDeleter{std::weak_ptr<SharedPool<T> *>{_this_ptr}});
    }
    else
    {
      PtrType tmp(_pool.top().release(),
                  ExternalDeleter{std::weak_ptr<SharedPool<T> *>{_this_ptr}});
      _pool.pop();

      reset(1, *tmp, std::forward<Args>(args)...);

      return tmp;
    }
  }

add()

template<class T >

void MooseUtils::SharedPool< T >::add ( std::unique_ptr< T >  t )

inline

Definition at line 75 of file SharedPool.h.

Referenced by MooseUtils::SharedPool< T >::ExternalDeleter::operator()().

{ _pool.push(std::move(t)); }

empty()

template<class T >

bool MooseUtils::SharedPool< T >::empty ( ) const

inline

Definition at line 99 of file SharedPool.h.

{ return _pool.empty(); }

num_created()

template<class T >

size_t MooseUtils::SharedPool< T >::num_created ( ) const

inline

Definition at line 103 of file SharedPool.h.

{ return _num_created; }

size()

template<class T >

size_t MooseUtils::SharedPool< T >::size ( ) const

inline

Definition at line 101 of file SharedPool.h.

{ return _pool.size(); }

Member Data Documentation

_num_created

template<class T >

size_t MooseUtils::SharedPool< T >::_num_created = 0

private

Definition at line 109 of file SharedPool.h.

Referenced by MooseUtils::SharedPool< T >::acquire(), and MooseUtils::SharedPool< T >::num_created().

_pool

template<class T >

std::stack<std::unique_ptr<T> > MooseUtils::SharedPool< T >::_pool

private

Definition at line 107 of file SharedPool.h.

Referenced by MooseUtils::SharedPool< T >::acquire(), MooseUtils::SharedPool< T >::add(), MooseUtils::SharedPool< T >::empty(), and MooseUtils::SharedPool< T >::size().

_this_ptr

template<class T >

std::shared_ptr<SharedPool<T> *> MooseUtils::SharedPool< T >::_this_ptr

private

Definition at line 106 of file SharedPool.h.

Referenced by MooseUtils::SharedPool< T >::acquire().

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

• include/utils/SharedPool.h