106 lines
3.8 KiB
C++
106 lines
3.8 KiB
C++
// Safe container implementation -*- C++ -*-
|
|
|
|
// Copyright (C) 2011-2016 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of the GNU ISO C++ Library. This library is free
|
|
// software; you can redistribute it and/or modify it under the
|
|
// terms of the GNU General Public License as published by the
|
|
// Free Software Foundation; either version 3, or (at your option)
|
|
// any later version.
|
|
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
/** @file debug/safe_unordered_container.h
|
|
* This file is a GNU debug extension to the Standard C++ Library.
|
|
*/
|
|
|
|
#ifndef _GLIBCXX_DEBUG_SAFE_UNORDERED_CONTAINER_H
|
|
#define _GLIBCXX_DEBUG_SAFE_UNORDERED_CONTAINER_H 1
|
|
|
|
#include <debug/assertions.h>
|
|
#include <debug/macros.h>
|
|
#include <debug/functions.h>
|
|
#include <debug/safe_unordered_base.h>
|
|
|
|
namespace __gnu_debug
|
|
{
|
|
/**
|
|
* @brief Base class for constructing a @a safe unordered container type
|
|
* that tracks iterators that reference it.
|
|
*
|
|
* The class template %_Safe_unordered_container simplifies the
|
|
* construction of @a safe unordered containers that track the iterators
|
|
* that reference the container, so that the iterators are notified of
|
|
* changes in the container that may affect their operation, e.g., if
|
|
* the container invalidates its iterators or is destructed. This class
|
|
* template may only be used by deriving from it and passing the name
|
|
* of the derived class as its template parameter via the curiously
|
|
* recurring template pattern. The derived class must have @c
|
|
* iterator and @c const_iterator types that are instantiations of
|
|
* class template _Safe_iterator for this container and @c local_iterator
|
|
* and @c const_local_iterator types that are instantiations of class
|
|
* template _Safe_local_iterator for this container. Iterators will
|
|
* then be tracked automatically.
|
|
*/
|
|
template<typename _Container>
|
|
class _Safe_unordered_container : public _Safe_unordered_container_base
|
|
{
|
|
private:
|
|
_Container&
|
|
_M_cont() noexcept
|
|
{ return *static_cast<_Container*>(this); }
|
|
|
|
protected:
|
|
void
|
|
_M_invalidate_locals()
|
|
{
|
|
auto __local_end = _M_cont()._M_base().end(0);
|
|
this->_M_invalidate_local_if(
|
|
[__local_end](__decltype(_M_cont()._M_base().cend(0)) __it)
|
|
{ return __it != __local_end; });
|
|
}
|
|
|
|
void
|
|
_M_invalidate_all()
|
|
{
|
|
auto __end = _M_cont()._M_base().end();
|
|
this->_M_invalidate_if(
|
|
[__end](__decltype(_M_cont()._M_base().cend()) __it)
|
|
{ return __it != __end; });
|
|
_M_invalidate_locals();
|
|
}
|
|
|
|
/** Invalidates all iterators @c x that reference this container,
|
|
are not singular, and for which @c __pred(x) returns @c
|
|
true. @c __pred will be invoked with the normal iterators nested
|
|
in the safe ones. */
|
|
template<typename _Predicate>
|
|
void
|
|
_M_invalidate_if(_Predicate __pred);
|
|
|
|
/** Invalidates all local iterators @c x that reference this container,
|
|
are not singular, and for which @c __pred(x) returns @c
|
|
true. @c __pred will be invoked with the normal ilocal iterators
|
|
nested in the safe ones. */
|
|
template<typename _Predicate>
|
|
void
|
|
_M_invalidate_local_if(_Predicate __pred);
|
|
};
|
|
} // namespace __gnu_debug
|
|
|
|
#include <debug/safe_unordered_container.tcc>
|
|
|
|
#endif
|