edm::zero_allocator< T, Allocator > Class Template Reference

#include <zero_allocator.h>

Inheritance diagram for edm::zero_allocator< T, Allocator >:

Classes
struct	rebind

Public Types
using	base_allocator_type = Allocator< T >
using	value_type = T

Public Member Functions
T *	allocate (const std::size_t n, const void *hint=nullptr)
	zero_allocator () throw ()
	zero_allocator (const zero_allocator &a) throw ()
template<typename U >
	zero_allocator (const zero_allocator< U > &a) throw ()

Detailed Description

template<typename T, template< typename X > class Allocator = tbb::tbb_allocator>
class edm::zero_allocator< T, Allocator >

Definition at line 30 of file zero_allocator.h.

Member Typedef Documentation

base_allocator_type

template<typename T, template< typename X > class Allocator = tbb::tbb_allocator>

using edm::zero_allocator< T, Allocator >::base_allocator_type = Allocator<T>

Definition at line 33 of file zero_allocator.h.

value_type

template<typename T, template< typename X > class Allocator = tbb::tbb_allocator>

using edm::zero_allocator< T, Allocator >::value_type = T

Definition at line 32 of file zero_allocator.h.

Constructor & Destructor Documentation

zero_allocator() [1/3]

template<typename T, template< typename X > class Allocator = tbb::tbb_allocator>

edm::zero_allocator< T, Allocator >::zero_allocator ( ) throw ( )

inline

Definition at line 39 of file zero_allocator.h.

{}

zero_allocator() [2/3]

template<typename T, template< typename X > class Allocator = tbb::tbb_allocator>

edm::zero_allocator< T, Allocator >::zero_allocator ( const zero_allocator< T, Allocator > &  a ) throw ( )

inline

Definition at line 40 of file zero_allocator.h.

: base_allocator_type(a) {}

zero_allocator() [3/3]

template<typename T, template< typename X > class Allocator = tbb::tbb_allocator>

template<typename U >

edm::zero_allocator< T, Allocator >::zero_allocator ( const zero_allocator< U > &  a ) throw ( )

inline

Definition at line 42 of file zero_allocator.h.

: base_allocator_type(Allocator<U>(a)) {}

Member Function Documentation

allocate()

template<typename T, template< typename X > class Allocator = tbb::tbb_allocator>

T* edm::zero_allocator< T, Allocator >::allocate ( const std::size_t  n, const void *  hint = nullptr  )

inline

Definition at line 44 of file zero_allocator.h.

                                                               {
      //T* ptr = base_allocator_type::allocate( n, hint );
      T *ptr = base_allocator_type::allocate(n);
      std::memset(static_cast<void *>(ptr), 0, n * sizeof(value_type));
      return ptr;
    }

References dqmiodumpmetadata::n.