| // Safe sequence implementation -*- C++ -*- |
| |
| // Copyright (C) 2010-2015 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.tcc |
| * This file is a GNU debug extension to the Standard C++ Library. |
| */ |
| |
| #ifndef _GLIBCXX_DEBUG_SAFE_SEQUENCE_TCC |
| #define _GLIBCXX_DEBUG_SAFE_SEQUENCE_TCC 1 |
| |
| namespace __gnu_debug |
| { |
| 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() && __pred(__victim->base())) |
| { |
| __victim->_M_invalidate(); |
| } |
| } |
| |
| 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() && __pred(__victim->base())) |
| { |
| __victim->_M_invalidate(); |
| } |
| } |
| } |
| |
| template<typename _Sequence> |
| template<typename _Predicate> |
| void |
| _Safe_sequence<_Sequence>:: |
| _M_transfer_from_if(_Safe_sequence& __from, _Predicate __pred) |
| { |
| typedef typename _Sequence::iterator iterator; |
| typedef typename _Sequence::const_iterator const_iterator; |
| |
| _Safe_iterator_base* __transfered_iterators = 0; |
| _Safe_iterator_base* __transfered_const_iterators = 0; |
| _Safe_iterator_base* __last_iterator = 0; |
| _Safe_iterator_base* __last_const_iterator = 0; |
| { |
| // We lock __from first and detach iterator(s) to transfer |
| __gnu_cxx::__scoped_lock sentry(__from._M_get_mutex()); |
| |
| for (_Safe_iterator_base* __iter = __from._M_iterators; __iter;) |
| { |
| _Safe_iterator_base* __victim_base = __iter; |
| iterator* __victim = static_cast<iterator*>(__victim_base); |
| __iter = __iter->_M_next; |
| if (!__victim->_M_singular() && __pred(__victim->base())) |
| { |
| __victim->_M_detach_single(); |
| if (__transfered_iterators) |
| { |
| __victim_base->_M_next = __transfered_iterators; |
| __transfered_iterators->_M_prior = __victim_base; |
| } |
| else |
| __last_iterator = __victim_base; |
| __victim_base->_M_sequence = this; |
| __victim_base->_M_version = this->_M_version; |
| __transfered_iterators = __victim_base; |
| } |
| } |
| |
| for (_Safe_iterator_base* __iter2 = __from._M_const_iterators; |
| __iter2;) |
| { |
| _Safe_iterator_base* __victim_base = __iter2; |
| const_iterator* __victim = |
| static_cast<const_iterator*>(__victim_base); |
| __iter2 = __iter2->_M_next; |
| if (!__victim->_M_singular() && __pred(__victim->base())) |
| { |
| __victim->_M_detach_single(); |
| if (__transfered_const_iterators) |
| { |
| __victim_base->_M_next = __transfered_const_iterators; |
| __transfered_const_iterators->_M_prior = __victim_base; |
| } |
| else |
| __last_const_iterator = __victim; |
| __victim_base->_M_sequence = this; |
| __victim_base->_M_version = this->_M_version; |
| __transfered_const_iterators = __victim_base; |
| } |
| } |
| } |
| |
| // Now we can lock *this and add the transfered iterators if any |
| if (__last_iterator || __last_const_iterator) |
| { |
| __gnu_cxx::__scoped_lock sentry(this->_M_get_mutex()); |
| if (__last_iterator) |
| { |
| if (this->_M_iterators) |
| { |
| this->_M_iterators->_M_prior = __last_iterator; |
| __last_iterator->_M_next = this->_M_iterators; |
| } |
| this->_M_iterators = __transfered_iterators; |
| } |
| if (__last_const_iterator) |
| { |
| if (this->_M_const_iterators) |
| { |
| this->_M_const_iterators->_M_prior = __last_const_iterator; |
| __last_const_iterator->_M_next = this->_M_const_iterators; |
| } |
| this->_M_const_iterators = __transfered_const_iterators; |
| } |
| } |
| } |
| } // namespace __gnu_debug |
| |
| #endif |