__gnu_debug::safe_sequence_base(3)

NAME

__gnu_debug::Safe_sequence_base - Base class that supports

tracking of iterators that reference a sequence.

SYNOPSIS

#include <safe_base.h>
Inherited   by   __gnu_debug::Safe_sequence<  Sequence  >,
__gnu_debug::Safe_sequence<   __gnu_debug::basic_string<   CharT,

Traits, Allocator > >

__gnu_debug_def::deque< Type, Allocator > >, __gnu_debug::Safe_sequence< __gnu_debug_def::hash_map< Value,

Type, HashFcn, EqualKey, Alloc > >

__gnu_debug_def::hash_multimap< Value, Type, HashFcn, EqualKey,

Alloc > >

__gnu_debug_def::hash_multiset< Value, HashFcn, EqualKey, Alloc > >, __gnu_debug::Safe_sequence< __gnu_debug_def::hash_set< Value,

HashFcn, EqualKey, Alloc > >

__gnu_debug_def::list< Type, Allocator > >, __gnu_debug::Safe_sequence< __gnu_debug_def::map< Key, Type,

Compare, Allocator > >

__gnu_debug_def::multimap< Key, Type, Compare, Allocator > >, __gnu_debug::Safe_sequence< __gnu_debug_def::multiset< Key,

Compare, Allocator > >

__gnu_debug_def::set< Key, Compare, Allocator > >, __gnu_debug::Safe_sequence< __gnu_debug_def::vector< Type,

Allocator > >

Public Member Functions

void M_invalidate_all () const

Public Attributes

Safe_iterator_base * M_iterators

The list of mutable iterators that reference this

container.

Safe_iterator_base * M_const_iterators

The list of constant iterators that reference this

container.

unsigned int M_version

The container version number. This number may never be

0.

Protected Member Functions

Safe_sequence_base ()
~Safe_sequence_base ()
void M_detach_all ()
void M_detach_singular ()
void M_revalidate_singular () void M_swap (Safe_sequence_base &x)

Detailed Description

Base class that supports tracking of iterators that refer

ence a sequence.

The Safe_sequence_base class provides basic support for

tracking iterators into a sequence. Sequences that track itera

tors 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 con

stant iterators and one for mutable iterators, and a version num

ber that allows very fast invalidation of all iterators that ref

erence 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 149 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 169 of file safe_base.h.

Member Function Documentation

void __gnu_debug::Safe_sequence_base::M_detach_all ()

[protected]

Detach all iterators, leaving them singular.

Definition at line 114 of file debug.cc.

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.

Definition at line 133 of file debug.cc.

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 reasion, such as an exception, need to become valid

again).

Definition at line 154 of file debug.cc.

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 contain

er now reference the other container.

Definition at line 172 of file debug.cc.

References __gnu_debug::swap().

void __gnu_debug::Safe_sequence_base::M_invalidate_all ()

const [inline]

Invalidates all iterators.

Definition at line 202 of file safe_base.h.

Member Data Documentation

Safe_iterator_base*

__gnu_debug::Safe_sequence_base::M_iterators

The list of mutable iterators that reference this contain

er.

Definition at line 153 of file safe_base.h.

Safe_iterator_base*

__gnu_debug::Safe_sequence_base::M_const_iterators

The list of constant iterators that reference this con

tainer.

Definition at line 156 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 159 of file safe_base.h.

Author

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from the source code.

libstdc++-v3 Source 1 Jan 2007__gnu_debug::Safe_se

quence_base(3)