__GNU_DEBUG::_SAFE_SEQUENCE_BASE(3CXX) - man page online | library functions

Mon Jan 18 2016
__gnu_debug::_Safe_sequence_base(3cxx)                     __gnu_debug::_Safe_sequence_base(3cxx)


__gnu_debug::_Safe_sequence_base -


Inherited by __gnu_debug::_Safe_sequence< _Sequence >, __gnu_debug::_Safe_unordered_container_base, __gnu_debug::_Safe_sequence< map< _Key, _Tp, _Compare, _Allocator > >, __gnu_debug::_Safe_sequence< multimap< _Key, _Tp, _Compare, _Allocator > >, __gnu_debug::_Safe_sequence< multiset< _Key, _Compare, _Allocator > >, and __gnu_debug::_Safe_sequence< set< _Key, _Compare, _Allocator > >. Public Member Functions void _M_attach (_Safe_iterator_base *__it, bool __constant) void _M_attach_single (_Safe_iterator_base *__it, bool __constant) throw () void _M_detach (_Safe_iterator_base *__it) void _M_detach_single (_Safe_iterator_base *__it) throw () void _M_invalidate_all () const Public Attributes _Safe_iterator_base * _M_const_iterators _Safe_iterator_base * _M_iterators unsigned int _M_version Protected Member Functions ~_Safe_sequence_base () void _M_detach_all () void _M_detach_singular () __gnu_cxx::__mutex & _M_get_mutex () throw () void _M_revalidate_singular () void _M_swap (_Safe_sequence_base &__x)

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 178 of file safe_base.h. Constructor & Destructor Documentation __gnu_debug::_Safe_sequence_base::~_Safe_sequence_base () [inline], [protected] Notify all iterators that reference this sequence that the sequence is being destroyed. Definition at line 198 of file safe_base.h. References _M_detach_all().

Member Function Documentation

void __gnu_debug::_Safe_sequence_base::_M_attach (_Safe_iterator_base * __it, bool __constant) Attach an iterator to this sequence. void __gnu_debug::_Safe_sequence_base::_M_attach_single (_Safe_iterator_base * __it, bool __constant) Likewise but not thread safe. void __gnu_debug::_Safe_sequence_base::_M_detach (_Safe_iterator_base * __it) Detach an iterator from this sequence void __gnu_debug::_Safe_sequence_base::_M_detach_all () [protected] Detach all iterators, leaving them singular. Referenced by ~_Safe_sequence_base(). void __gnu_debug::_Safe_sequence_base::_M_detach_single (_Safe_iterator_base * __it) Likewise but not thread safe. 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. __gnu_cxx::__mutex& __gnu_debug::_Safe_sequence_base::_M_get_mutex () [protected] For use in _Safe_sequence. void __gnu_debug::_Safe_sequence_base::_M_invalidate_all () const [inline] Invalidates all iterators. Definition at line 234 of file safe_base.h. 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). void __gnu_debug::_Safe_sequence_base::_M_swap (_Safe_sequence_base & __x) [protected] 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

_Safe_iterator_base* __gnu_debug::_Safe_sequence_base::_M_const_iterators The list of constant iterators that reference this container. Definition at line 185 of file safe_base.h. _Safe_iterator_base* __gnu_debug::_Safe_sequence_base::_M_iterators The list of mutable iterators that reference this container. Definition at line 182 of file safe_base.h. unsigned int __gnu_debug::_Safe_sequence_base::_M_version [mutable] The container version number. This number may never be 0. Definition at line 188 of file safe_base.h.


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