aligned_allocator< T, Alignment > Class Template Reference

#include <align_alloc.h>

Classes
struct	rebind

Public Types
typedef const T *	const_pointer
typedef const T &	const_reference
typedef ptrdiff_t	difference_type
typedef T *	pointer
typedef T &	reference
typedef std::size_t	size_type
typedef T	value_type

Public Member Functions
T *	address (T &r) const
const T *	address (const T &s) const
	aligned_allocator ()
	aligned_allocator (const aligned_allocator &)
template<typename U >
	aligned_allocator (const aligned_allocator< U, Alignment > &)
T *	allocate (const std::size_t n) const
template<typename U >
T *	allocate (const std::size_t n, const U *) const
void	construct (T *const p, const T &t) const
void	construct (T *const p)
void	deallocate (T *const p, const std::size_t n) const
void	destroy (T *const p) const
std::size_t	max_size () const
bool	operator!= (const aligned_allocator &other) const
bool	operator== (const aligned_allocator &other) const
	~aligned_allocator ()

Private Member Functions
aligned_allocator &	operator= (const aligned_allocator &)

Detailed Description

template<typename T, std::size_t Alignment>
class aligned_allocator< T, Alignment >

Allocator for aligned data.

Modified from the Mallocator from Stephan T. Lavavej. http://blogs.msdn.com/b/vcblog/archive/2008/08/28/the-mallocator.aspx

Definition at line 10 of file align_alloc.h.

Member Typedef Documentation

const_pointer

template<typename T , std::size_t Alignment>

typedef const T* aligned_allocator< T, Alignment >::const_pointer

Definition at line 14 of file align_alloc.h.

const_reference

template<typename T , std::size_t Alignment>

typedef const T& aligned_allocator< T, Alignment >::const_reference

Definition at line 16 of file align_alloc.h.

difference_type

template<typename T , std::size_t Alignment>

typedef ptrdiff_t aligned_allocator< T, Alignment >::difference_type

Definition at line 19 of file align_alloc.h.

pointer

template<typename T , std::size_t Alignment>

typedef T* aligned_allocator< T, Alignment >::pointer

Definition at line 13 of file align_alloc.h.

reference

template<typename T , std::size_t Alignment>

typedef T& aligned_allocator< T, Alignment >::reference

Definition at line 15 of file align_alloc.h.

size_type

template<typename T , std::size_t Alignment>

typedef std::size_t aligned_allocator< T, Alignment >::size_type

Definition at line 18 of file align_alloc.h.

value_type

template<typename T , std::size_t Alignment>

typedef T aligned_allocator< T, Alignment >::value_type

Definition at line 17 of file align_alloc.h.

Constructor & Destructor Documentation

aligned_allocator() [1/3]

template<typename T , std::size_t Alignment>

aligned_allocator< T, Alignment >::aligned_allocator ( )

inline

Definition at line 56 of file align_alloc.h.

{}

aligned_allocator() [2/3]

template<typename T , std::size_t Alignment>

aligned_allocator< T, Alignment >::aligned_allocator ( const aligned_allocator< T, Alignment > &  )

inline

Definition at line 58 of file align_alloc.h.

{}

aligned_allocator() [3/3]

template<typename T , std::size_t Alignment>

template<typename U >

aligned_allocator< T, Alignment >::aligned_allocator ( const aligned_allocator< U, Alignment > &  )

inline

Definition at line 61 of file align_alloc.h.

{}

~aligned_allocator()

template<typename T , std::size_t Alignment>

aligned_allocator< T, Alignment >::~aligned_allocator ( )

inline

Definition at line 63 of file align_alloc.h.

{}

Member Function Documentation

address() [1/2]

template<typename T , std::size_t Alignment>

T* aligned_allocator< T, Alignment >::address ( T &  r ) const

inline

Definition at line 21 of file align_alloc.h.

References alignCSCRings::r.

{ return &r; }

address() [2/2]

template<typename T , std::size_t Alignment>

const T* aligned_allocator< T, Alignment >::address ( const T &  s ) const

inline

Definition at line 23 of file align_alloc.h.

References alignCSCRings::s.

{ return &s; }

allocate() [1/2]

template<typename T , std::size_t Alignment>

T* aligned_allocator< T, Alignment >::allocate ( const std::size_t  n ) const

inline

Definition at line 66 of file align_alloc.h.

References aligned_alloc(), aligned_allocator< T, Alignment >::max_size(), create_idmaps::n, definitions::NULL, and MetAnalyzer::pv().

Referenced by aligned_allocator< T, Alignment >::allocate().

                                       {
    // The return value of allocate(0) is unspecified.
    // Mallocator returns NULL in order to avoid depending
    // on malloc(0)'s implementation-defined behavior
    // (the implementation can define malloc(0) to return NULL,
    // in which case the bad_alloc check below would fire).
    // All allocators can return NULL in this case.
    if (n == 0) {
      return NULL;
    }

    // All allocators should contain an integer overflow check.
    // The Standardization Committee recommends that std::length_error
    // be thrown in the case of integer overflow.
    if (n > max_size()) {
      throw std::length_error("aligned_allocator<T>::allocate() - Integer overflow.");
    }

    // Mallocator wraps malloc().
    void* const pv = std::aligned_alloc(Alignment, n * sizeof(T));

    // Allocators should throw std::bad_alloc in the case of memory allocation failure.
    if (pv == NULL) {
      throw std::bad_alloc();
    }

    return static_cast<T*>(pv);
  }

allocate() [2/2]

template<typename T , std::size_t Alignment>

template<typename U >

T* aligned_allocator< T, Alignment >::allocate ( const std::size_t  n, const U *    ) const

inline

Definition at line 99 of file align_alloc.h.

References aligned_allocator< T, Alignment >::allocate(), and create_idmaps::n.

                                                   {
    return allocate(n);
  }

construct() [1/2]

template<typename T , std::size_t Alignment>

void aligned_allocator< T, Alignment >::construct ( T *const  p, const T &  t  ) const

inline

Definition at line 39 of file align_alloc.h.

References AlCaHLTBitMon_ParallelJobs::p, MetAnalyzer::pv(), and submitPVValidationJobs::t.

                                               {
    void* const pv = static_cast<void*>(p);

    new (pv) T(t);
  }

construct() [2/2]

template<typename T , std::size_t Alignment>

void aligned_allocator< T, Alignment >::construct ( T *const  p )

inline

Definition at line 45 of file align_alloc.h.

References aligned_allocator< T, Alignment >::construct(), and AlCaHLTBitMon_ParallelJobs::p.

Referenced by aligned_allocator< T, Alignment >::construct().

{ return construct(p, value_type()); }

deallocate()

template<typename T , std::size_t Alignment>

void aligned_allocator< T, Alignment >::deallocate ( T *const  p, const std::size_t  n  ) const

inline

Definition at line 95 of file align_alloc.h.

References free(), and AlCaHLTBitMon_ParallelJobs::p.

{ std::free(p); }

destroy()

template<typename T , std::size_t Alignment>

void aligned_allocator< T, Alignment >::destroy ( T *const  p ) const

inline

Definition at line 47 of file align_alloc.h.

References AlCaHLTBitMon_ParallelJobs::p.

{ p->~T(); }

max_size()

template<typename T , std::size_t Alignment>

std::size_t aligned_allocator< T, Alignment >::max_size ( ) const

inline

Definition at line 25 of file align_alloc.h.

Referenced by aligned_allocator< T, Alignment >::allocate().

                             {
    // The following has been carefully written to be independent of
    // the definition of size_t and to avoid signed/unsigned warnings.
    return (static_cast<std::size_t>(0) - static_cast<std::size_t>(1)) / sizeof(T);
  }

operator!=()

template<typename T , std::size_t Alignment>

bool aligned_allocator< T, Alignment >::operator!= ( const aligned_allocator< T, Alignment > &  other ) const

inline

Definition at line 37 of file align_alloc.h.

References trackingPlots::other.

{ return !(*this == other); }

operator=()

template<typename T , std::size_t Alignment>

aligned_allocator& aligned_allocator< T, Alignment >::operator= ( const aligned_allocator< T, Alignment > &  )

private

operator==()

template<typename T , std::size_t Alignment>

bool aligned_allocator< T, Alignment >::operator== ( const aligned_allocator< T, Alignment > &  other ) const

inline

Definition at line 52 of file align_alloc.h.

{ return true; }