45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/*
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* Copyright 2012 Google Inc.
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* Copyright 2018-present Facebook, Inc.
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*
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* Taken from depthcharge: src/base/list.c
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but without any warranty; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <list.h>
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void list_remove(struct list_node *node)
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{
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if (node->prev)
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node->prev->next = node->next;
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if (node->next)
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node->next->prev = node->prev;
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}
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void list_insert_after(struct list_node *node, struct list_node *after)
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{
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node->next = after->next;
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node->prev = after;
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after->next = node;
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if (node->next)
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node->next->prev = node;
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}
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void list_insert_before(struct list_node *node, struct list_node *before)
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{
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node->prev = before->prev;
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node->next = before;
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before->prev = node;
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if (node->prev)
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node->prev->next = node;
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}
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