CaloRecGPU::Helpers::maybe_allocate< T > Struct Template Reference

Possibly holds an object in its internal buffer. More...

#include <Helpers.h>

Collaboration diagram for CaloRecGPU::Helpers::maybe_allocate< T >:

Public Member Functions
	maybe_allocate (const bool allocate, const T &t)
	maybe_allocate (const bool allocate, T &&t)
template<class ... Args>
	maybe_allocate (const bool allocate, Args &&... args)
	maybe_allocate (const maybe_allocate &other)
	maybe_allocate (maybe_allocate &&other)
maybe_allocate &	operator= (const maybe_allocate &other)
maybe_allocate &	operator= (maybe_allocate &&other)
	~maybe_allocate ()
bool	valid () const
T &&	get () &&
T &	get () &
const T &	get () const &
const T *	operator-> () const
T *	operator-> ()
	operator T& ()
	operator T&& () &&
	operator const T & () const

Private Attributes
char	m_buf [sizeof(T)]
T *	m_object = nullptr

Detailed Description

template<class T>
struct CaloRecGPU::Helpers::maybe_allocate< T >

Possibly holds an object in its internal buffer.

Useful to forego heap allocations, but still have the option not to construct something...

Definition at line 1671 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

Constructor & Destructor Documentation

maybe_allocate() [1/5]

template<class T >

CaloRecGPU::Helpers::maybe_allocate< T >::maybe_allocate ( const bool  allocate, const T &  t  )

inline

Definition at line 1680 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        if (allocate)
          {
            m_object = new (m_buf) T(t);
          }
      }

maybe_allocate() [2/5]

template<class T >

CaloRecGPU::Helpers::maybe_allocate< T >::maybe_allocate ( const bool  allocate, T &&  t  )

inline

Definition at line 1688 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        if (allocate)
          {
            m_object = new (m_buf) T(t);
          }
      }

maybe_allocate() [3/5]

template<class T >

template<class ... Args>

CaloRecGPU::Helpers::maybe_allocate< T >::maybe_allocate ( const bool  allocate, Args &&...  args  )

inline

Definition at line 1697 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        if (allocate)
          {
            m_object = new (m_buf) T(std::forward<Args>(args)...);
          }
      }

maybe_allocate() [4/5]

template<class T >

CaloRecGPU::Helpers::maybe_allocate< T >::maybe_allocate ( const maybe_allocate< T > &  other )

inline

Definition at line 1705 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

                                                   : maybe_allocate(other.get())
      {
      }

maybe_allocate() [5/5]

template<class T >

CaloRecGPU::Helpers::maybe_allocate< T >::maybe_allocate ( maybe_allocate< T > &&  other )

inline

Definition at line 1710 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

                                              : maybe_allocate(other.get())
      {
      }

~maybe_allocate()

template<class T >

CaloRecGPU::Helpers::maybe_allocate< T >::~maybe_allocate ( )

inline

Definition at line 1747 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        if (m_object != nullptr)
          {
            m_object->~T();
          }
      }

Member Function Documentation

get() [1/3]

template<class T >

T& CaloRecGPU::Helpers::maybe_allocate< T >::get ( ) &

inline

Definition at line 1765 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        return *m_object;
      }

get() [2/3]

template<class T >

T&& CaloRecGPU::Helpers::maybe_allocate< T >::get ( ) &&

inline

Definition at line 1760 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        return *m_object;
      }

get() [3/3]

template<class T >

const T& CaloRecGPU::Helpers::maybe_allocate< T >::get ( ) const &

inline

Definition at line 1770 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        return *m_object;
      }

operator const T &()

template<class T >

CaloRecGPU::Helpers::maybe_allocate< T >::operator const T & ( ) const

inline

Definition at line 1795 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        return *m_object;
      }

operator T&()

template<class T >

CaloRecGPU::Helpers::maybe_allocate< T >::operator T& ( )

inline

Definition at line 1785 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        return *m_object;
      }

operator T&&()

template<class T >

CaloRecGPU::Helpers::maybe_allocate< T >::operator T&& ( ) &&

inline

Definition at line 1790 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        return *m_object;
      }

operator->() [1/2]

template<class T >

T* CaloRecGPU::Helpers::maybe_allocate< T >::operator-> ( )

inline

Definition at line 1780 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        return m_object;
      }

operator->() [2/2]

template<class T >

const T* CaloRecGPU::Helpers::maybe_allocate< T >::operator-> ( ) const

inline

Definition at line 1775 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        return m_object;
      }

operator=() [1/2]

template<class T >

maybe_allocate& CaloRecGPU::Helpers::maybe_allocate< T >::operator= ( const maybe_allocate< T > &  other )

inline

Definition at line 1714 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        if (&other != this)
          {
            if (m_object != nullptr)
              {
                (*m_object) = other.get();
              }
            else
              {
                m_object = new (m_buf) T(other.get());
              }
          }
        return (*this);
      }

operator=() [2/2]

template<class T >

maybe_allocate& CaloRecGPU::Helpers::maybe_allocate< T >::operator= ( maybe_allocate< T > &&  other )

inline

Definition at line 1731 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        if (&other != this)
          {
            if (m_object != nullptr)
              {
                (*m_object) = other.get();
              }
            else
              {
                m_object = new (m_buf) T(other.get());
              }
          }
        return (*this);
      }

valid()

template<class T >

bool CaloRecGPU::Helpers::maybe_allocate< T >::valid ( ) const

inline

Definition at line 1755 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

      {
        return m_object != nullptr;
      }

Member Data Documentation

m_buf

template<class T >

char CaloRecGPU::Helpers::maybe_allocate< T >::m_buf[sizeof(T)]

private

Definition at line 1675 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

m_object

template<class T >

T* CaloRecGPU::Helpers::maybe_allocate< T >::m_object = nullptr

private

Definition at line 1676 of file Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h.

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

• Calorimeter/CaloRecGPU/CaloRecGPU/Helpers.h