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/*
* Copyright (c) 2017 Richard Braun.
*
* This program 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 of the License, or
* (at your option) any later version.
*
* 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/>.
*
*
* Isolated type definition used to avoid inclusion circular dependencies.
*/
#ifndef KERN_HLIST_TYPES_H
#define KERN_HLIST_TYPES_H
/*
* List node.
*
* The pprev member points to another node member instead of another node,
* so that it may safely refer to the first member of the list head. Its
* main purpose is to allow O(1) removal.
*/
struct hlist_node {
struct hlist_node *next;
struct hlist_node **pprev;
};
struct hlist {
struct hlist_node *first;
};
#endif /* KERN_HLIST_TYPES_H */
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