__gnu_debug::_Safe_sequence_base Class Reference

Inheritance diagram for __gnu_debug::_Safe_sequence_base:

Public Attributes
_Safe_iterator_base *	_M_const_iterators
_Safe_iterator_base *	_M_iterators
unsigned int	_M_version

Protected Member Functions
	_Safe_sequence_base (_Safe_sequence_base &&__seq) noexcept
	_Safe_sequence_base (const _Safe_sequence_base &) noexcept
	~_Safe_sequence_base ()
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

Friends
class	_Safe_iterator_base

Detailed Description

Base class that supports tracking of iterators that reference a sequence.

The _Safe_sequence_base class provides basic support for tracking iterators into a sequence. Sequences that track iterators must derived from _Safe_sequence_base publicly, so that safe iterators (which inherit _Safe_iterator_base) can attach to them. This class contains two linked lists of iterators, one for constant iterators and one for mutable 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 sequences may fail to provide the exception-safety guarantees required by the C++ standard.

Definition at line 188 of file safe_base.h.

Constructor & Destructor Documentation

~_Safe_sequence_base()

__gnu_debug::_Safe_sequence_base::~_Safe_sequence_base ( )

inlineprotected

Notify all iterators that reference this sequence that the sequence is being destroyed.

Definition at line 220 of file safe_base.h.

References _M_detach_all().

Member Function Documentation

_M_detach_all()

void __gnu_debug::_Safe_sequence_base::_M_detach_all ( )

protected

Detach all iterators, leaving them singular.

Referenced by ~_Safe_sequence_base().

_M_detach_singular()

void __gnu_debug::_Safe_sequence_base::_M_detach_singular ( )

protected

Detach all singular iterators.

Postcondition

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

_M_get_mutex()

__gnu_cxx::__mutex& __gnu_debug::_Safe_sequence_base::_M_get_mutex ( ) throw ( )

protected

For use in _Safe_sequence.

Referenced by __gnu_debug::_Safe_sequence< _Sequence >::_M_transfer_from_if().

_M_invalidate_all()

void __gnu_debug::_Safe_sequence_base::_M_invalidate_all ( ) const

inlineprotected

Invalidates all iterators.

Definition at line 256 of file safe_base.h.

References _M_version.

_M_revalidate_singular()

void __gnu_debug::_Safe_sequence_base::_M_revalidate_singular ( )

protected

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).

_M_swap()

void __gnu_debug::_Safe_sequence_base::_M_swap ( _Safe_sequence_base &  __x )

protectednoexcept

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.

Member Data Documentation

_M_const_iterators

_Safe_iterator_base* __gnu_debug::_Safe_sequence_base::_M_const_iterators

The list of constant iterators that reference this container.

Definition at line 197 of file safe_base.h.

Referenced by __gnu_debug::_Safe_sequence< _Sequence >::_M_transfer_from_if().

_M_iterators

_Safe_iterator_base* __gnu_debug::_Safe_sequence_base::_M_iterators

The list of mutable iterators that reference this container.

Definition at line 194 of file safe_base.h.

Referenced by __gnu_debug::_Safe_sequence< _Sequence >::_M_transfer_from_if().

_M_version

unsigned int __gnu_debug::_Safe_sequence_base::_M_version

mutable

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

Definition at line 200 of file safe_base.h.

Referenced by _M_invalidate_all().

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

• safe_base.h