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__gnu_debug::_Safe_unordered_container_base(3) Library Functions Manual __gnu_debug::_Safe_unordered_container_base(3)

NAME

__gnu_debug::_Safe_unordered_container_base -

SYNOPSIS

Inherits __gnu_debug::_Safe_sequence_base.

Inherited by __gnu_debug::_Safe_unordered_container< _Container >, __gnu_debug::_Safe_unordered_container< unordered_map< _Key, _Tp, _Hash, _Pred, _Alloc > >, __gnu_debug::_Safe_unordered_container< unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc > >, __gnu_debug::_Safe_unordered_container< unordered_multiset< _Value, _Hash, _Pred, _Alloc > >, and __gnu_debug::_Safe_unordered_container< unordered_set< _Value, _Hash, _Pred, _Alloc > >.

Public Member Functions


void _M_attach (_Safe_iterator_base *__it, bool __constant)
void _M_attach_local (_Safe_iterator_base *__it, bool __constant)
void _M_attach_local_single (_Safe_iterator_base *__it, bool __constant) throw ()
void _M_attach_single (_Safe_iterator_base *__it, bool __constant) throw ()
void _M_detach (_Safe_iterator_base *__it)
void _M_detach_local (_Safe_iterator_base *__it)
void _M_detach_local_single (_Safe_iterator_base *__it) throw ()
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_const_local_iterators
_Safe_iterator_base * _M_iterators
_Safe_iterator_base * _M_local_iterators
unsigned int _M_version

Protected Member Functions


~_Safe_unordered_container_base ()
void _M_detach_all ()
void _M_detach_singular ()
__gnu_cxx::__mutex & _M_get_mutex () throw ()
void _M_revalidate_singular ()
void _M_swap (_Safe_unordered_container_base &__x)
void _M_swap (_Safe_sequence_base &__x)

Protected Attributes


noexcept __pad0__: _Safe_unordered_container_base() { } noexcept : _Safe_unordered_container_base() { this->_M_swap(__x)

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.

Definition at line 123 of file safe_unordered_base.h.

Constructor & Destructor Documentation

__gnu_debug::_Safe_unordered_container_base::~_Safe_unordered_container_base () [inline], [protected]

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

Definition at line 151 of file safe_unordered_base.h.

Member Function Documentation

void __gnu_debug::_Safe_sequence_base::_M_attach (_Safe_iterator_base *__it, bool__constant) [inherited]

Attach an iterator to this sequence.

void __gnu_debug::_Safe_unordered_container_base::_M_attach_local (_Safe_iterator_base *__it, bool__constant)

Attach an iterator to this container.

void __gnu_debug::_Safe_unordered_container_base::_M_attach_local_single (_Safe_iterator_base *__it, bool__constant)

Likewise but not thread safe.

void __gnu_debug::_Safe_sequence_base::_M_attach_single (_Safe_iterator_base *__it, bool__constant) [inherited]

Likewise but not thread safe.

void __gnu_debug::_Safe_sequence_base::_M_detach (_Safe_iterator_base *__it) [inherited]

Detach an iterator from this sequence

void __gnu_debug::_Safe_unordered_container_base::_M_detach_all () [protected]

Detach all iterators, leaving them singular.

void __gnu_debug::_Safe_unordered_container_base::_M_detach_local (_Safe_iterator_base *__it)

Detach an iterator from this container

void __gnu_debug::_Safe_unordered_container_base::_M_detach_local_single (_Safe_iterator_base *__it)

Likewise but not thread safe.

void __gnu_debug::_Safe_sequence_base::_M_detach_single (_Safe_iterator_base *__it) [inherited]

Likewise but not thread safe.

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_transfer_from_if().

void __gnu_debug::_Safe_sequence_base::_M_invalidate_all () const [inline], [inherited]

Invalidates all iterators.

Definition at line 233 of file safe_base.h.

References __gnu_debug::_Safe_sequence_base::_M_version.

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_unordered_container_base::_M_swap (_Safe_unordered_container_base &__x) [protected]

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.

void __gnu_debug::_Safe_sequence_base::_M_swap (_Safe_sequence_base &__x) [protected], [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.

Member Data Documentation

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

The list of constant iterators that reference this container.

Definition at line 184 of file safe_base.h.

Referenced by __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.

Definition at line 131 of file safe_unordered_base.h.

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

The list of mutable iterators that reference this container.

Definition at line 181 of file safe_base.h.

Referenced by __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.

Definition at line 128 of file safe_unordered_base.h.

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

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

Definition at line 187 of file safe_base.h.

Referenced by __gnu_debug::_Safe_sequence_base::_M_invalidate_all(), and __gnu_debug::_Safe_sequence< _Sequence >::_M_transfer_from_if().

Author

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Tue Sep 29 2020 libstdc++