__gnu_debug::_Safe_unordered_container_base(3)

NAME
__gnu_debug::_Safe_unordered_container_base - Base class that supports tracking of local iterators that reference an unordered container.

SYNOPSIS

#include <safe_unordered_base.h>

Inherits __gnu_debug::_Safe_sequence_base.

Inherited by __gnu_debug::_Safe_unordered_container< unordered_map< _Key, _Tp, std::hash< _Key >, std::equal_to< _Key >, std::allocator< std::pair< const _Key, _Tp > > > >, __gnu_debug::_Safe_unordered_container< unordered_multimap< _Key, _Tp, std::hash< _Key >, std::equal_to< _Key >, std::allocator< std::pair< const _Key, _Tp > > > >, __gnu_debug::_Safe_unordered_container< unordered_multiset< _Value, std::hash< _Value >, std::equal_to< _Value >, std::allocator< _Value > > >, __gnu_debug::_Safe_unordered_container< unordered_set< _Value, std::hash< _Value >, std::equal_to< _Value >, std::allocator< _Value > > >, and __gnu_debug::_Safe_unordered_container< _Container >.

  Public Attributes
_Safe_iterator_base * _M_const_iterators
The list of constant iterators that reference this container.
_Safe_iterator_base * _M_const_local_iterators
The list of constant local iterators that reference this container.
_Safe_iterator_base * _M_iterators
The list of mutable iterators that reference this container.
_Safe_iterator_base * _M_local_iterators
The list of mutable local iterators that reference this container.
unsigned int _M_version
The container version number. This number may never be 0.

  Protected Member Functions
_Safe_unordered_container_base (_Safe_unordered_container_base &&__x) noexcept
_Safe_unordered_container_base (const _Safe_unordered_container_base &) noexcept
~_Safe_unordered_container_base () noexcept
void _M_detach_all ()
void _M_detach_singular ()
__gnu_cxx::__mutex & _M_get_mutex () throw ()
void _M_invalidate_all () const
void _M_revalidate_singular ()
void _M_swap (_Safe_sequence_base &__x) noexcept
void _M_swap (_Safe_unordered_container_base &__x) noexcept

  Friends
class _Safe_local_iterator_base

Detailed Description

Base class that supports tracking of local iterators that reference an unordered container. The _Safe_unordered_container_base class provides basic support for tracking iterators into an unordered container. Containers that track iterators must derived from _Safe_unordered_container_base publicly, so that safe iterators (which inherit _Safe_iterator_base) can attach to them. This class contains four linked lists of iterators, one for constant iterators, one for mutable iterators, one for constant local iterators, one for mutable local iterators and a version number that allows very fast invalidation of all iterators that reference the container.

This class must ensure that no operation on it may throw an exception, otherwise safe containers may fail to provide the exception-safety guarantees required by the C++ standard.

Constructor & Destructor Documentation

  __gnu_debug::_Safe_unordered_container_base::~_Safe_unordered_container_base () [inline], [protected], [noexcept]
Notify all iterators that reference this container that the container is being destroyed.

References _M_detach_all().

Member Function Documentation

  void __gnu_debug::_Safe_unordered_container_base::_M_detach_all () [protected]
Detach all iterators, leaving them singular.

Referenced by ~_Safe_unordered_container_base().

  void __gnu_debug::_Safe_sequence_base::_M_detach_singular () [protected], [inherited]
Detach all singular iterators.

Postcondition
    for all iterators i attached to this sequence, i->_M_version == _M_version.

  __gnu_cxx::__mutex & __gnu_debug::_Safe_sequence_base::_M_get_mutex () [protected], [inherited]
For use in _Safe_sequence.

Referenced by __gnu_debug::_Safe_sequence< _Sequence >::_M_invalidate_if(), __gnu_debug::_Safe_unordered_container< _Container >::_M_invalidate_if(), __gnu_debug::_Safe_unordered_container< _Container >::_M_invalidate_local_if(), and __gnu_debug::_Safe_sequence< _Sequence >::_M_transfer_from_if().

  void __gnu_debug::_Safe_sequence_base::_M_invalidate_all () const [inline], [protected], [inherited]
Invalidates all iterators.

References _M_invalidate_all(), and _M_version.

Referenced by _M_invalidate_all().

  void __gnu_debug::_Safe_sequence_base::_M_revalidate_singular () [protected], [inherited]
Revalidates all attached singular iterators. This method may be used to validate iterators that were invalidated before (but for some reason, such as an exception, need to become valid again).

  void __gnu_debug::_Safe_sequence_base::_M_swap (_Safe_sequence_base & __x) [protected], [noexcept], [inherited]
Swap this sequence with the given sequence. This operation also swaps ownership of the iterators, so that when the operation is complete all iterators that originally referenced one container now reference the other container.

  void __gnu_debug::_Safe_unordered_container_base::_M_swap (_Safe_unordered_container_base & __x) [protected], [noexcept]
Swap this container with the given container. This operation also swaps ownership of the iterators, so that when the operation is complete all iterators that originally referenced one container now reference the other container.

Member Data Documentation

  _Safe_iterator_base* __gnu_debug::_Safe_sequence_base::_M_const_iterators [mutable], [inherited]

The list of constant iterators that reference this container.

Referenced by __gnu_debug::_Safe_sequence< _Sequence >::_M_invalidate_if(), __gnu_debug::_Safe_unordered_container< _Container >::_M_invalidate_if(), and __gnu_debug::_Safe_sequence< _Sequence >::_M_transfer_from_if().

  _Safe_iterator_base* __gnu_debug::_Safe_unordered_container_base::_M_const_local_iterators

The list of constant local iterators that reference this container.

Referenced by __gnu_debug::_Safe_unordered_container< _Container >::_M_invalidate_local_if().

  _Safe_iterator_base* __gnu_debug::_Safe_sequence_base::_M_iterators [mutable], [inherited]

The list of mutable iterators that reference this container.

Referenced by __gnu_debug::_Safe_sequence< _Sequence >::_M_invalidate_if(), __gnu_debug::_Safe_unordered_container< _Container >::_M_invalidate_if(), and __gnu_debug::_Safe_sequence< _Sequence >::_M_transfer_from_if().

  _Safe_iterator_base* __gnu_debug::_Safe_unordered_container_base::_M_local_iterators

The list of mutable local iterators that reference this container.

Referenced by __gnu_debug::_Safe_unordered_container< _Container >::_M_invalidate_local_if().

  unsigned int __gnu_debug::_Safe_sequence_base::_M_version [mutable], [inherited]

The container version number. This number may never be 0.

Referenced by _M_invalidate_all(), __gnu_debug::_Safe_sequence< _Sequence >::_M_transfer_from_if(), __gnu_debug::_Safe_iterator< _Base_iterator, map >::operator=(), __gnu_debug::_Safe_iterator< _Base_iterator, map >::operator=(), __gnu_debug::_Safe_local_iterator< _OtherIterator, _Sequence >::operator=(), and __gnu_debug::_Safe_local_iterator< _OtherIterator, _Sequence >::operator=().

Author

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