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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2014 Attila Molnar <attilamolnar@hush.com>
*
* This file is part of InspIRCd. InspIRCd 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, version 2.
*
* This program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <iterator>
namespace insp
{
struct intrusive_list_def_tag { };
template <typename T, typename Tag = intrusive_list_def_tag> class intrusive_list;
template <typename T, typename Tag = intrusive_list_def_tag> class intrusive_list_tail;
template <typename T, typename Tag = intrusive_list_def_tag>
class intrusive_list_node
{
T* ptr_next;
T* ptr_prev;
void unlink()
{
if (ptr_next)
ptr_next->intrusive_list_node<T, Tag>::ptr_prev = this->ptr_prev;
if (ptr_prev)
ptr_prev->intrusive_list_node<T, Tag>::ptr_next = this->ptr_next;
ptr_next = ptr_prev = NULL;
}
public:
intrusive_list_node()
: ptr_next(NULL)
, ptr_prev(NULL)
{
}
friend class intrusive_list<T, Tag>;
friend class intrusive_list_tail<T, Tag>;
};
} // namespace insp
// Intrusive list where the list only has a pointer to the head element
#define INSPIRCD_INTRUSIVE_LIST_NAME intrusive_list
#include "intrusive_list_impl.h"
#undef INSPIRCD_INTRUSIVE_LIST_NAME
// Intrusive list where the list maintains a pointer to both the head and the tail elements.
// Additional methods: back(), push_back(), pop_back()
#define INSPIRCD_INTRUSIVE_LIST_NAME intrusive_list_tail
#define INSPIRCD_INTRUSIVE_LIST_HAS_TAIL
#include "intrusive_list_impl.h"
#undef INSPIRCD_INTRUSIVE_LIST_NAME
#undef INSPIRCD_INTRUSIVE_LIST_HAS_TAIL
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