[gcc] GCC 4.5.0=>4.5.1

gcc/libstdc++-v3/include/debug/safe_sequence.h

-// Safe sequence implementation  -*- C++ -*-
-
-// Copyright (C) 2003, 2004, 2005, 2006, 2009
-// 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_sequence.h
- *  This file is a GNU debug extension to the Standard C++ Library.
- */
-
-#ifndef _GLIBCXX_DEBUG_SAFE_SEQUENCE_H
-#define _GLIBCXX_DEBUG_SAFE_SEQUENCE_H 1
-
-#include <debug/debug.h>
-#include <debug/macros.h>
-#include <debug/functions.h>
-#include <debug/safe_base.h>
-
-namespace __gnu_debug
-{
-  template<typename _Iterator, typename _Sequence>
-    class _Safe_iterator;
-
-  /** A simple function object that returns true if the passed-in
-   *  value is not equal to the stored value. It saves typing over
-   *  using both bind1st and not_equal.
-   */
-  template<typename _Type>
-    class _Not_equal_to
-    {
-      _Type __value;
-
-    public:
-      explicit _Not_equal_to(const _Type& __v) : __value(__v) { }
-
-      bool
-      operator()(const _Type& __x) const
-      { return __value != __x; }
-    };
-
-  /** A function object that returns true when the given random access
-      iterator is at least @c n steps away from the given iterator. */
-  template<typename _Iterator>
-    class _After_nth_from
-    {
-      typedef typename std::iterator_traits<_Iterator>::difference_type
-      difference_type;
-
-      _Iterator _M_base;
-      difference_type _M_n;
-
-    public:
-      _After_nth_from(const difference_type& __n, const _Iterator& __base)
-      : _M_base(__base), _M_n(__n) { }
-
-      bool
-      operator()(const _Iterator& __x) const
-      { return __x - _M_base >= _M_n; }
-    };
-
-  /**
-   * @brief Base class for constructing a "safe" sequence type that
-   * tracks iterators that reference it.
-   *
-   * The class template %_Safe_sequence simplifies the construction of
-   * "safe" sequences that track the iterators that reference the
-   * sequence, so that the iterators are notified of changes in the
-   * sequence 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 @const_iterator types that are instantiations of
-   * class template _Safe_iterator for this sequence. Iterators will
-   * then be tracked automatically.
-   */
-  template<typename _Sequence>
-    class _Safe_sequence : public _Safe_sequence_base
-    {
-    public:
-      /** Invalidates all iterators @c x that reference this sequence,
-          are not singular, and for which @c pred(x) returns @c
-          true. The user of this routine should be careful not to make
-          copies of the iterators passed to @p pred, as the copies may
-          interfere with the invalidation. */
-      template<typename _Predicate>
-        void
-        _M_invalidate_if(_Predicate __pred);
-
-      /** Transfers all iterators that reference this memory location
-          to this sequence from whatever sequence they are attached
-          to. */
-      template<typename _Iterator>
-        void
-        _M_transfer_iter(const _Safe_iterator<_Iterator, _Sequence>& __x);
-    };
-
-  template<typename _Sequence>
-    template<typename _Predicate>
-      void
-      _Safe_sequence<_Sequence>::
-      _M_invalidate_if(_Predicate __pred)
-      {
-        typedef typename _Sequence::iterator iterator;
-        typedef typename _Sequence::const_iterator const_iterator;
-
-        __gnu_cxx::__scoped_lock sentry(this->_M_get_mutex());
-        for (_Safe_iterator_base* __iter = _M_iterators; __iter;)
-          {
-            iterator* __victim = static_cast<iterator*>(__iter);
-            __iter = __iter->_M_next;
-            if (!__victim->_M_singular())
-              {
-                if (__pred(__victim->base()))
-                  __victim->_M_invalidate_single();
-              }
-          }
-
-        for (_Safe_iterator_base* __iter2 = _M_const_iterators; __iter2;)
-          {
-            const_iterator* __victim = static_cast<const_iterator*>(__iter2);
-            __iter2 = __iter2->_M_next;
-            if (!__victim->_M_singular())
-              {
-                if (__pred(__victim->base()))
-                  __victim->_M_invalidate_single();
-              }
-          }
-      }
-
-  template<typename _Sequence>
-    template<typename _Iterator>
-      void
-      _Safe_sequence<_Sequence>::
-      _M_transfer_iter(const _Safe_iterator<_Iterator, _Sequence>& __x)
-      {
-        _Safe_sequence_base* __from = __x._M_sequence;
-        if (!__from)
-          return;
-
-        typedef typename _Sequence::iterator iterator;
-        typedef typename _Sequence::const_iterator const_iterator;
-
-        __gnu_cxx::__scoped_lock sentry(this->_M_get_mutex());
-        for (_Safe_iterator_base* __iter = __from->_M_iterators; __iter;)
-          {
-            iterator* __victim = static_cast<iterator*>(__iter);
-            __iter = __iter->_M_next;
-            if (!__victim->_M_singular() && __victim->base() == __x.base())
-              __victim->_M_attach_single(static_cast<_Sequence*>(this));
-          }
-
-        for (_Safe_iterator_base* __iter2 = __from->_M_const_iterators; 
-             __iter2;)
-          {
-            const_iterator* __victim = static_cast<const_iterator*>(__iter2);
-            __iter2 = __iter2->_M_next;
-            if (!__victim->_M_singular() && __victim->base() == __x.base())
-              __victim->_M_attach_single(static_cast<_Sequence*>(this));
-          }
-      }
-} // namespace __gnu_debug
-
-#endif