// Safe sequence/iterator base implementation -*- C++ -*-
-// Copyright (C) 2003, 2004, 2005, 2006
+// Copyright (C) 2003, 2004, 2005, 2006, 2009, 2010
// 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 2, or (at your option)
+// 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,
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
-// USA.
+// 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.
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License. This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
+// 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_base.h
+ * This file is a GNU debug extension to the Standard C++ Library.
+ */
#ifndef _GLIBCXX_DEBUG_SAFE_BASE_H
#define _GLIBCXX_DEBUG_SAFE_BASE_H 1
{
class _Safe_sequence_base;
- /** \brief Basic functionality for a "safe" iterator.
+ /** \brief Basic functionality for a @a safe iterator.
*
* The %_Safe_iterator_base base class implements the functionality
* of a safe iterator that is not specific to a particular iterator
{ }
/** Initialize the iterator to reference the sequence pointed to
- * by @p__seq. @p __constant is true when we are initializing a
+ * by @p __seq. @p __constant is true when we are initializing a
* constant iterator, and false if it is a mutable iterator. Note
* that @p __seq may be NULL, in which case the iterator will be
* singular. Otherwise, the iterator will reference @p __seq and
~_Safe_iterator_base() { this->_M_detach(); }
/** For use in _Safe_iterator. */
- __gnu_cxx::__mutex& _M_get_mutex();
+ __gnu_cxx::__mutex& _M_get_mutex() throw ();
public:
/** Attaches this iterator to the given sequence, detaching it
void _M_attach(_Safe_sequence_base* __seq, bool __constant);
/** Likewise, but not thread-safe. */
- void _M_attach_single(_Safe_sequence_base* __seq, bool __constant);
+ void _M_attach_single(_Safe_sequence_base* __seq, bool __constant) throw ();
/** Detach the iterator for whatever sequence it is attached to,
* if any.
void _M_detach();
/** Likewise, but not thread-safe. */
- void _M_detach_single();
+ void _M_detach_single() throw ();
/** Determines if we are attached to the given sequence. */
bool _M_attached_to(const _Safe_sequence_base* __seq) const
{ return _M_sequence == __seq; }
/** Is this iterator singular? */
- bool _M_singular() const;
+ _GLIBCXX_PURE bool _M_singular() const throw ();
/** Can we compare this iterator to the given iterator @p __x?
Returns true if both iterators are nonsingular and reference
the same sequence. */
- bool _M_can_compare(const _Safe_iterator_base& __x) const;
+ _GLIBCXX_PURE bool _M_can_compare(const _Safe_iterator_base& __x) const throw ();
+
+ /** Invalidate the iterator, making it singular. */
+ void
+ _M_invalidate()
+ { _M_version = 0; }
+
+ /** Reset all member variables */
+ void
+ _M_reset() throw ();
+
+ /** Unlink itself */
+ void
+ _M_unlink() throw ()
+ {
+ if (_M_prior)
+ _M_prior->_M_next = _M_next;
+ if (_M_next)
+ _M_next->_M_prior = _M_prior;
+ }
};
/**
* 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, otherwise @a safe sequences may fail to provide the
* exception-safety guarantees required by the C++ standard.
*/
class _Safe_sequence_base
/** 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
+ * (but for some reason, such as an exception, need to become
* valid again).
*/
void
_M_swap(_Safe_sequence_base& __x);
/** For use in _Safe_sequence. */
- __gnu_cxx::__mutex& _M_get_mutex();
+ __gnu_cxx::__mutex& _M_get_mutex() throw ();
public:
/** Invalidates all iterators. */
void
_M_invalidate_all() const
{ if (++_M_version == 0) _M_version = 1; }
+
+ /** Attach an iterator to this sequence. */
+ void
+ _M_attach(_Safe_iterator_base* __it, bool __constant);
+
+ /** Likewise but not thread safe. */
+ void
+ _M_attach_single(_Safe_iterator_base* __it, bool __constant) throw ();
+
+ /** Detach an iterator from this sequence */
+ void
+ _M_detach(_Safe_iterator_base* __it);
+
+ /** Likewise but not thread safe. */
+ void
+ _M_detach_single(_Safe_iterator_base* __it) throw ();
};
} // namespace __gnu_debug
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