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https://github.com/inspircd/inspircd.git
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67 lines
2.0 KiB
C++
67 lines
2.0 KiB
C++
/*
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* InspIRCd -- Internet Relay Chat Daemon
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*
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* Copyright (C) 2020, 2022 Sadie Powell <sadie@witchery.services>
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* Copyright (C) 2014 Attila Molnar <attilamolnar@hush.com>
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*
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* This file is part of InspIRCd. InspIRCd is free software: you can
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* redistribute it and/or modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <iterator>
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namespace insp
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{
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struct intrusive_list_def_tag { };
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template <typename T, typename Tag = intrusive_list_def_tag> class intrusive_list;
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template <typename T, typename Tag = intrusive_list_def_tag> class intrusive_list_tail;
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template <typename T, typename Tag = intrusive_list_def_tag>
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class intrusive_list_node
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{
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T* ptr_next = nullptr;
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T* ptr_prev = nullptr;
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void unlink()
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{
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if (ptr_next)
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ptr_next->intrusive_list_node<T, Tag>::ptr_prev = this->ptr_prev;
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if (ptr_prev)
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ptr_prev->intrusive_list_node<T, Tag>::ptr_next = this->ptr_next;
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ptr_next = ptr_prev = nullptr;
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}
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public:
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friend class intrusive_list<T, Tag>;
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friend class intrusive_list_tail<T, Tag>;
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};
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} // namespace insp
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// Intrusive list where the list only has a pointer to the head element
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#define INSPIRCD_INTRUSIVE_LIST_NAME intrusive_list
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#include "intrusive_list_impl.h"
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#undef INSPIRCD_INTRUSIVE_LIST_NAME
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// Intrusive list where the list maintains a pointer to both the head and the tail elements.
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// Additional methods: back(), push_back(), pop_back()
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#define INSPIRCD_INTRUSIVE_LIST_NAME intrusive_list_tail
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#define INSPIRCD_INTRUSIVE_LIST_HAS_TAIL
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#include "intrusive_list_impl.h"
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#undef INSPIRCD_INTRUSIVE_LIST_NAME
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#undef INSPIRCD_INTRUSIVE_LIST_HAS_TAIL
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