Edit File: safe_unordered_container.h
// Safe container implementation -*- C++ -*- // Copyright (C) 2011-2018 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
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