queue.h has taken over this functionality
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=42362
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/* FreeBSD $Id$ */
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/*
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* Copyright (c) 1997, 1998
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* Nick Hibma <n_hibma@freebsd.org>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY NICK HIBMA AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/* These definitions are taken from the NetBSD /sys/sys/queue.h file
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* The copyright as in /sys/sys/queue.h from FreeBSD applies (they are the same)
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*/
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/* This was called SIMPLEQ
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*/
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#ifndef STAILQ_HEAD_INITIALIZER
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#define STAILQ_HEAD_INITIALIZER(head) \
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{ NULL, &(head).stqh_first }
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#endif
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/* This one was called SIMPLEQ_REMOVE_HEAD but removes not only the
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* head element, but a whole queue of elements from the head.
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*/
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#ifndef STAILQ_REMOVE_HEAD_QUEUE
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#define STAILQ_REMOVE_HEAD_QUEUE(head, elm, field) do { \
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if (((head)->stqh_first = (elm)->field.stqe_next) == NULL) \
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(head)->stqh_last = &(head)->stqh_first; \
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} while (0)
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#endif
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/* This is called LIST and was called like that as well in the NetBSD version
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*/
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#ifndef LIST_HEAD_INITIALIZER
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#define LIST_HEAD_INITIALIZER(head) \
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{ NULL }
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#endif
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