forked from jbagg/QtZeroConf
76 lines
3.0 KiB
C
76 lines
3.0 KiB
C
#ifndef foollistfoo
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#define foollistfoo
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/***
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This file is part of avahi.
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avahi is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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avahi 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
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with avahi; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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/** \file llist.h A simple macro based linked list implementation */
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#include <assert.h>
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#include <avahi-common/cdecl.h>
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AVAHI_C_DECL_BEGIN
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/** The head of the linked list. Use this in the structure that shall
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* contain the head of the linked list */
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#define AVAHI_LLIST_HEAD(t,name) t *name
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/** The pointers in the linked list's items. Use this in the item structure */
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#define AVAHI_LLIST_FIELDS(t,name) t *name##_next, *name##_prev
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/** Initialize the list's head */
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#define AVAHI_LLIST_HEAD_INIT(t,head) do { (head) = NULL; } while(0)
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/** Initialize a list item */
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#define AVAHI_LLIST_INIT(t,name,item) do { \
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t *_item = (item); \
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assert(_item); \
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_item->name##_prev = _item->name##_next = NULL; \
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} while(0)
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/** Prepend an item to the list */
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#define AVAHI_LLIST_PREPEND(t,name,head,item) do { \
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t **_head = &(head), *_item = (item); \
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assert(_item); \
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if ((_item->name##_next = *_head)) \
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_item->name##_next->name##_prev = _item; \
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_item->name##_prev = NULL; \
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*_head = _item; \
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} while (0)
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/** Remove an item from the list */
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#define AVAHI_LLIST_REMOVE(t,name,head,item) do { \
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t **_head = &(head), *_item = (item); \
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assert(_item); \
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if (_item->name##_next) \
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_item->name##_next->name##_prev = _item->name##_prev; \
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if (_item->name##_prev) \
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_item->name##_prev->name##_next = _item->name##_next; \
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else {\
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assert(*_head == _item); \
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*_head = _item->name##_next; \
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} \
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_item->name##_next = _item->name##_prev = NULL; \
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} while(0)
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AVAHI_C_DECL_END
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#endif
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