lunar (3) __gnu_cxx::bitmap_allocator.3cxx.gz
NAME
__gnu_cxx::bitmap_allocator< _Tp > - Bitmap Allocator, primary template.
SYNOPSIS
#include <bitmap_allocator.h>
Inherits __gnu_cxx::free_list.
Public Types
typedef free_list::__mutex_type __mutex_type
typedef const _Tp * const_pointer
typedef const _Tp & const_reference
typedef ptrdiff_t difference_type
typedef _Tp * pointer
typedef std::true_type propagate_on_container_move_assignment
typedef _Tp & reference
typedef size_t size_type
typedef _Tp value_type
Public Member Functions
bitmap_allocator (const bitmap_allocator &) noexcept
template<typename _Tp1 > bitmap_allocator (const bitmap_allocator< _Tp1 > &) noexcept
pointer _M_allocate_single_object ()
Allocates memory for a single object of size sizeof(_Tp).
void _M_deallocate_single_object (pointer __p) throw ()
Deallocates memory that belongs to a single object of size sizeof(_Tp).
const_pointer address (const_reference __r) const noexcept
pointer address (reference __r) const noexcept
_GLIBCXX_NODISCARD pointer allocate (size_type __n)
_GLIBCXX_NODISCARD pointer allocate (size_type __n, typename bitmap_allocator< void
>::const_pointer)
template<typename _Up , typename... _Args> void construct (_Up *__p, _Args &&... __args)
void deallocate (pointer __p, size_type __n) throw ()
template<typename _Up > void destroy (_Up *__p)
size_type max_size () const noexcept
Detailed Description
template<typename _Tp>
class __gnu_cxx::bitmap_allocator< _Tp >"Bitmap Allocator, primary template.
Definition at line 684 of file bitmap_allocator.h.
Member Typedef Documentation
template<typename _Tp > typedef free_list::__mutex_type __gnu_cxx::bitmap_allocator< _Tp
>::__mutex_type
Definition at line 694 of file bitmap_allocator.h.
template<typename _Tp > typedef const _Tp* __gnu_cxx::bitmap_allocator< _Tp >::const_pointer
Definition at line 690 of file bitmap_allocator.h.
template<typename _Tp > typedef const _Tp& __gnu_cxx::bitmap_allocator< _Tp >::const_reference
Definition at line 692 of file bitmap_allocator.h.
template<typename _Tp > typedef ptrdiff_t __gnu_cxx::bitmap_allocator< _Tp >::difference_type
Definition at line 688 of file bitmap_allocator.h.
template<typename _Tp > typedef _Tp* __gnu_cxx::bitmap_allocator< _Tp >::pointer
Definition at line 689 of file bitmap_allocator.h.
template<typename _Tp > typedef std::true_type __gnu_cxx::bitmap_allocator< _Tp
>::propagate_on_container_move_assignment
Definition at line 705 of file bitmap_allocator.h.
template<typename _Tp > typedef _Tp& __gnu_cxx::bitmap_allocator< _Tp >::reference
Definition at line 691 of file bitmap_allocator.h.
template<typename _Tp > typedef size_t __gnu_cxx::bitmap_allocator< _Tp >::size_type
Definition at line 687 of file bitmap_allocator.h.
template<typename _Tp > typedef _Tp __gnu_cxx::bitmap_allocator< _Tp >::value_type
Definition at line 693 of file bitmap_allocator.h.
Constructor & Destructor Documentation
template<typename _Tp > __gnu_cxx::bitmap_allocator< _Tp >::bitmap_allocator () [inline],
[noexcept]
Definition at line 999 of file bitmap_allocator.h.
template<typename _Tp > __gnu_cxx::bitmap_allocator< _Tp >::bitmap_allocator (const
bitmap_allocator< _Tp > &) [inline], [noexcept]
Definition at line 1002 of file bitmap_allocator.h.
template<typename _Tp > template<typename _Tp1 > __gnu_cxx::bitmap_allocator< _Tp
>::bitmap_allocator (const bitmap_allocator< _Tp1 > &) [inline], [noexcept]
Definition at line 1006 of file bitmap_allocator.h.
template<typename _Tp > __gnu_cxx::bitmap_allocator< _Tp >::~bitmap_allocator () [inline],
[noexcept]
Definition at line 1009 of file bitmap_allocator.h.
Member Function Documentation
template<typename _Tp > pointer __gnu_cxx::bitmap_allocator< _Tp >::_M_allocate_single_object
() [inline]
Allocates memory for a single object of size sizeof(_Tp).
Exceptions
std::bad_alloc. If memory cannot be allocated.
Complexity: Worst case complexity is O(N), but that is hardly ever hit. If and when this
particular case is encountered, the next few cases are guaranteed to have a worst case
complexity of O(1)! That's why this function performs very well on average. You can
consider this function to have a complexity referred to commonly as: Amortized Constant
time.
Definition at line 824 of file bitmap_allocator.h.
References __gnu_cxx::__detail::__bit_allocate(), __gnu_cxx::__detail::__num_bitmaps(),
and __gnu_cxx::_Bit_scan_forward().
template<typename _Tp > void __gnu_cxx::bitmap_allocator< _Tp >::_M_deallocate_single_object
(pointer __p) [inline]
Deallocates memory that belongs to a single object of size sizeof(_Tp). Complexity:
O(lg(N)), but the worst case is not hit often! This is because containers usually
deallocate memory close to each other and this case is handled in O(1) time by the
deallocate function.
Definition at line 914 of file bitmap_allocator.h.
template<typename _Tp > const_pointer __gnu_cxx::bitmap_allocator< _Tp >::address
(const_reference __r) const [inline], [noexcept]
Definition at line 1066 of file bitmap_allocator.h.
template<typename _Tp > pointer __gnu_cxx::bitmap_allocator< _Tp >::address (reference __r)
const [inline], [noexcept]
Definition at line 1062 of file bitmap_allocator.h.
template<typename _Tp > _GLIBCXX_NODISCARD pointer __gnu_cxx::bitmap_allocator< _Tp
>::allocate (size_type __n) [inline]
Definition at line 1013 of file bitmap_allocator.h.
template<typename _Tp > _GLIBCXX_NODISCARD pointer __gnu_cxx::bitmap_allocator< _Tp
>::allocate (size_type __n, typename bitmap_allocator< void >::const_pointer) [inline]
Definition at line 1037 of file bitmap_allocator.h.
template<typename _Tp > template<typename _Up , typename... _Args> void
__gnu_cxx::bitmap_allocator< _Tp >::construct (_Up * __p, _Args &&... __args) [inline]
Definition at line 1076 of file bitmap_allocator.h.
template<typename _Tp > void __gnu_cxx::bitmap_allocator< _Tp >::deallocate (pointer __p,
size_type __n) [inline]
Definition at line 1041 of file bitmap_allocator.h.
template<typename _Tp > template<typename _Up > void __gnu_cxx::bitmap_allocator< _Tp
>::destroy (_Up * __p) [inline]
Definition at line 1081 of file bitmap_allocator.h.
template<typename _Tp > size_type __gnu_cxx::bitmap_allocator< _Tp >::max_size () const
[inline], [noexcept]
Definition at line 1070 of file bitmap_allocator.h.
Author
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