MmapAllocator< T > Class Template Reference

Classes
struct	rebind

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

Public Member Functions
T *	address (T &x) const
const T *	address (const T &x) const
size_t	max_size () const
bool	operator!= (const MmapAllocator< T > &other) const
bool	operator== (const MmapAllocator< T > &) const
template<class... Args>
void	construct (T *p, Args &&...args)
void	destroy (T *p)
T *	allocate (size_t n)
void	deallocate (T *p, size_t n)

Detailed Description

template<class T>
class MmapAllocator< T >

Definition at line 33 of file AtomicHashArrayTest.cpp.

Member Typedef Documentation

template<class T>

typedef const T* MmapAllocator< T >::const_pointer

Definition at line 37 of file AtomicHashArrayTest.cpp.

template<class T>

typedef const T& MmapAllocator< T >::const_reference

Definition at line 39 of file AtomicHashArrayTest.cpp.

template<class T>

typedef ptrdiff_t MmapAllocator< T >::difference_type

Definition at line 41 of file AtomicHashArrayTest.cpp.

template<class T>

typedef T* MmapAllocator< T >::pointer

Definition at line 36 of file AtomicHashArrayTest.cpp.

template<class T>

typedef T& MmapAllocator< T >::reference

Definition at line 38 of file AtomicHashArrayTest.cpp.

template<class T>

typedef size_t MmapAllocator< T >::size_type

Definition at line 42 of file AtomicHashArrayTest.cpp.

template<class T>

typedef T MmapAllocator< T >::value_type

Definition at line 35 of file AtomicHashArrayTest.cpp.

Member Function Documentation

template<class T>

T* MmapAllocator< T >::address ( T &  x ) const

inline

Definition at line 44 of file AtomicHashArrayTest.cpp.

                         {
    return std::addressof(x);
  }

template<class T>

const T* MmapAllocator< T >::address ( const T &  x ) const

inline

Definition at line 48 of file AtomicHashArrayTest.cpp.

                                     {
    return std::addressof(x);
  }

template<class T>

T* MmapAllocator< T >::allocate ( size_t  n )

inline

Definition at line 78 of file AtomicHashArrayTest.cpp.

References T.

                        {
    void* p = mmap(
        nullptr,
        n * sizeof(T),
        PROT_READ | PROT_WRITE,
        MAP_PRIVATE | MAP_ANONYMOUS,
        -1,
        0);
    if (p == MAP_FAILED) {
      throw std::bad_alloc();
    }
    return (T*)p;
  }

template<class T>

template<class... Args>

void MmapAllocator< T >::construct ( T *  p, Args &&...  args  )

inline

Definition at line 70 of file AtomicHashArrayTest.cpp.

References T.

                                       {
    new (p) T(std::forward<Args>(args)...);
  }

template<class T>

void MmapAllocator< T >::deallocate ( T *  p, size_t  n  )

inline

Definition at line 92 of file AtomicHashArrayTest.cpp.

References T.

                                  {
    munmap(p, n * sizeof(T));
  }

template<class T>

void MmapAllocator< T >::destroy ( T *  p )

inline

Definition at line 74 of file AtomicHashArrayTest.cpp.

                     {
    p->~T();
  }

template<class T>

size_t MmapAllocator< T >::max_size ( ) const

inline

Definition at line 52 of file AtomicHashArrayTest.cpp.

References max.

                          {
    return std::numeric_limits<size_t>::max();
  }

template<class T>

bool MmapAllocator< T >::operator!= ( const MmapAllocator< T > &  other ) const

inline

Definition at line 61 of file AtomicHashArrayTest.cpp.

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

template<class T>

bool MmapAllocator< T >::operator== ( const MmapAllocator< T > &  ) const

inline

Definition at line 65 of file AtomicHashArrayTest.cpp.

References testing::Args().

                                                   {
    return true;
  }

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

• proxygen/folly/folly/test/AtomicHashArrayTest.cpp