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@@ -1,343 +1,343 @@
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-/* $NetBSD: queue.h,v 1.45.14.1 2007/07/18 20:13:24 liamjfoy Exp $ */
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-
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-/*
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- * Qemu version: Copy from netbsd, removed debug code, removed some of
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- * the implementations. Left in lists, tail queues and circular queues.
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- */
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-
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-/*
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- * Copyright (c) 1991, 1993
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- * The Regents of the University of California. 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. Neither the name of the University nor the names of its 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 THE REGENTS 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 THE REGENTS OR CONTRIBUTORS BE LIABLE
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- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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- * SUCH DAMAGE.
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- *
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- * @(#)queue.h 8.5 (Berkeley) 8/20/94
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- */
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-
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-#ifndef _SYS_QUEUE_H_
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-#define _SYS_QUEUE_H_
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-
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-/*
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- * This file defines three types of data structures:
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- * lists, tail queues, and circular queues.
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- *
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- * A list is headed by a single forward pointer (or an array of forward
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- * pointers for a hash table header). The elements are doubly linked
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- * so that an arbitrary element can be removed without a need to
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- * traverse the list. New elements can be added to the list before
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- * or after an existing element or at the head of the list. A list
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- * may only be traversed in the forward direction.
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- *
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- * A tail queue is headed by a pair of pointers, one to the head of the
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- * list and the other to the tail of the list. The elements are doubly
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- * linked so that an arbitrary element can be removed without a need to
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- * traverse the list. New elements can be added to the list before or
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- * after an existing element, at the head of the list, or at the end of
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- * the list. A tail queue may be traversed in either direction.
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- *
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- * A circle queue is headed by a pair of pointers, one to the head of the
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- * list and the other to the tail of the list. The elements are doubly
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- * linked so that an arbitrary element can be removed without a need to
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- * traverse the list. New elements can be added to the list before or after
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- * an existing element, at the head of the list, or at the end of the list.
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- * A circle queue may be traversed in either direction, but has a more
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- * complex end of list detection.
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- *
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- * For details on the use of these macros, see the queue(3) manual page.
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- */
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-
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-/*
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- * List definitions.
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- */
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-#define LIST_HEAD(name, type) \
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-struct name { \
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- struct type *lh_first; /* first element */ \
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-}
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-
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-#define LIST_HEAD_INITIALIZER(head) \
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- { NULL }
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-
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-#define LIST_ENTRY(type) \
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-struct { \
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- struct type *le_next; /* next element */ \
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- struct type **le_prev; /* address of previous next element */ \
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-}
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-
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-/*
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- * List functions.
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- */
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-#define LIST_INIT(head) do { \
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- (head)->lh_first = NULL; \
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-} while (/*CONSTCOND*/0)
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-
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-#define LIST_INSERT_AFTER(listelm, elm, field) do { \
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- if (((elm)->field.le_next = (listelm)->field.le_next) != NULL) \
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- (listelm)->field.le_next->field.le_prev = \
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- &(elm)->field.le_next; \
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- (listelm)->field.le_next = (elm); \
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- (elm)->field.le_prev = &(listelm)->field.le_next; \
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-} while (/*CONSTCOND*/0)
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-
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-#define LIST_INSERT_BEFORE(listelm, elm, field) do { \
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- (elm)->field.le_prev = (listelm)->field.le_prev; \
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- (elm)->field.le_next = (listelm); \
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- *(listelm)->field.le_prev = (elm); \
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- (listelm)->field.le_prev = &(elm)->field.le_next; \
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-} while (/*CONSTCOND*/0)
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-
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-#define LIST_INSERT_HEAD(head, elm, field) do { \
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- if (((elm)->field.le_next = (head)->lh_first) != NULL) \
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- (head)->lh_first->field.le_prev = &(elm)->field.le_next;\
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- (head)->lh_first = (elm); \
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- (elm)->field.le_prev = &(head)->lh_first; \
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-} while (/*CONSTCOND*/0)
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-
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-#define LIST_REMOVE(elm, field) do { \
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- if ((elm)->field.le_next != NULL) \
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- (elm)->field.le_next->field.le_prev = \
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- (elm)->field.le_prev; \
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- *(elm)->field.le_prev = (elm)->field.le_next; \
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-} while (/*CONSTCOND*/0)
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-
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-#define LIST_FOREACH(var, head, field) \
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- for ((var) = ((head)->lh_first); \
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- (var); \
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- (var) = ((var)->field.le_next))
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-
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-/*
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- * List access methods.
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- */
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-#define LIST_EMPTY(head) ((head)->lh_first == NULL)
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-#define LIST_FIRST(head) ((head)->lh_first)
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-#define LIST_NEXT(elm, field) ((elm)->field.le_next)
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-
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-
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-/*
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- * Tail queue definitions.
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- */
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-#define _TAILQ_HEAD(name, type, qual) \
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-struct name { \
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- qual type *tqh_first; /* first element */ \
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- qual type *qual *tqh_last; /* addr of last next element */ \
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-}
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-#define TAILQ_HEAD(name, type) _TAILQ_HEAD(name, struct type,)
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-
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-#define TAILQ_HEAD_INITIALIZER(head) \
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- { NULL, &(head).tqh_first }
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-
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-#define _TAILQ_ENTRY(type, qual) \
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-struct { \
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- qual type *tqe_next; /* next element */ \
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- qual type *qual *tqe_prev; /* address of previous next element */\
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-}
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-#define TAILQ_ENTRY(type) _TAILQ_ENTRY(struct type,)
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-
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-/*
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- * Tail queue functions.
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- */
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-#define TAILQ_INIT(head) do { \
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- (head)->tqh_first = NULL; \
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- (head)->tqh_last = &(head)->tqh_first; \
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-} while (/*CONSTCOND*/0)
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-
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-#define TAILQ_INSERT_HEAD(head, elm, field) do { \
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- if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \
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- (head)->tqh_first->field.tqe_prev = \
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- &(elm)->field.tqe_next; \
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- else \
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- (head)->tqh_last = &(elm)->field.tqe_next; \
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- (head)->tqh_first = (elm); \
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- (elm)->field.tqe_prev = &(head)->tqh_first; \
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-} while (/*CONSTCOND*/0)
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-
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-#define TAILQ_INSERT_TAIL(head, elm, field) do { \
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- (elm)->field.tqe_next = NULL; \
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- (elm)->field.tqe_prev = (head)->tqh_last; \
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- *(head)->tqh_last = (elm); \
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- (head)->tqh_last = &(elm)->field.tqe_next; \
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-} while (/*CONSTCOND*/0)
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-
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-#define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
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- if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
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- (elm)->field.tqe_next->field.tqe_prev = \
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- &(elm)->field.tqe_next; \
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- else \
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- (head)->tqh_last = &(elm)->field.tqe_next; \
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- (listelm)->field.tqe_next = (elm); \
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- (elm)->field.tqe_prev = &(listelm)->field.tqe_next; \
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-} while (/*CONSTCOND*/0)
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-
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-#define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
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- (elm)->field.tqe_prev = (listelm)->field.tqe_prev; \
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- (elm)->field.tqe_next = (listelm); \
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- *(listelm)->field.tqe_prev = (elm); \
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- (listelm)->field.tqe_prev = &(elm)->field.tqe_next; \
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-} while (/*CONSTCOND*/0)
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-
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-#define TAILQ_REMOVE(head, elm, field) do { \
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- if (((elm)->field.tqe_next) != NULL) \
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- (elm)->field.tqe_next->field.tqe_prev = \
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- (elm)->field.tqe_prev; \
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- else \
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- (head)->tqh_last = (elm)->field.tqe_prev; \
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- *(elm)->field.tqe_prev = (elm)->field.tqe_next; \
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-} while (/*CONSTCOND*/0)
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-
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-#define TAILQ_FOREACH(var, head, field) \
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- for ((var) = ((head)->tqh_first); \
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- (var); \
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- (var) = ((var)->field.tqe_next))
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-
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-#define TAILQ_FOREACH_SAFE(var, head, field, next_var) \
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- for ((var) = ((head)->tqh_first); \
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- (var) && ((next_var) = ((var)->field.tqe_next), 1); \
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- (var) = (next_var))
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-
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-#define TAILQ_FOREACH_REVERSE(var, head, headname, field) \
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- for ((var) = (*(((struct headname *)((head)->tqh_last))->tqh_last)); \
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- (var); \
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- (var) = (*(((struct headname *)((var)->field.tqe_prev))->tqh_last)))
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-
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-/*
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- * Tail queue access methods.
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- */
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-#define TAILQ_EMPTY(head) ((head)->tqh_first == NULL)
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-#define TAILQ_FIRST(head) ((head)->tqh_first)
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-#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
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-
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-#define TAILQ_LAST(head, headname) \
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- (*(((struct headname *)((head)->tqh_last))->tqh_last))
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-#define TAILQ_PREV(elm, headname, field) \
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- (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
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-
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-
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-/*
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- * Circular queue definitions.
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- */
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-#define CIRCLEQ_HEAD(name, type) \
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-struct name { \
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- struct type *cqh_first; /* first element */ \
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- struct type *cqh_last; /* last element */ \
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-}
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-
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-#define CIRCLEQ_HEAD_INITIALIZER(head) \
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- { (void *)&head, (void *)&head }
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-
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-#define CIRCLEQ_ENTRY(type) \
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-struct { \
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- struct type *cqe_next; /* next element */ \
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- struct type *cqe_prev; /* previous element */ \
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-}
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-
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-/*
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- * Circular queue functions.
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- */
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-#define CIRCLEQ_INIT(head) do { \
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- (head)->cqh_first = (void *)(head); \
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- (head)->cqh_last = (void *)(head); \
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-} while (/*CONSTCOND*/0)
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-
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-#define CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
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- (elm)->field.cqe_next = (listelm)->field.cqe_next; \
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- (elm)->field.cqe_prev = (listelm); \
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- if ((listelm)->field.cqe_next == (void *)(head)) \
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- (head)->cqh_last = (elm); \
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- else \
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- (listelm)->field.cqe_next->field.cqe_prev = (elm); \
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- (listelm)->field.cqe_next = (elm); \
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-} while (/*CONSTCOND*/0)
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-
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-#define CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do { \
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- (elm)->field.cqe_next = (listelm); \
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- (elm)->field.cqe_prev = (listelm)->field.cqe_prev; \
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- if ((listelm)->field.cqe_prev == (void *)(head)) \
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- (head)->cqh_first = (elm); \
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- else \
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- (listelm)->field.cqe_prev->field.cqe_next = (elm); \
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- (listelm)->field.cqe_prev = (elm); \
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-} while (/*CONSTCOND*/0)
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-
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-#define CIRCLEQ_INSERT_HEAD(head, elm, field) do { \
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- (elm)->field.cqe_next = (head)->cqh_first; \
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- (elm)->field.cqe_prev = (void *)(head); \
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- if ((head)->cqh_last == (void *)(head)) \
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- (head)->cqh_last = (elm); \
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- else \
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- (head)->cqh_first->field.cqe_prev = (elm); \
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- (head)->cqh_first = (elm); \
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-} while (/*CONSTCOND*/0)
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-
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-#define CIRCLEQ_INSERT_TAIL(head, elm, field) do { \
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- (elm)->field.cqe_next = (void *)(head); \
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- (elm)->field.cqe_prev = (head)->cqh_last; \
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- if ((head)->cqh_first == (void *)(head)) \
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- (head)->cqh_first = (elm); \
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- else \
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- (head)->cqh_last->field.cqe_next = (elm); \
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- (head)->cqh_last = (elm); \
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-} while (/*CONSTCOND*/0)
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-
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-#define CIRCLEQ_REMOVE(head, elm, field) do { \
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- if ((elm)->field.cqe_next == (void *)(head)) \
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- (head)->cqh_last = (elm)->field.cqe_prev; \
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- else \
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- (elm)->field.cqe_next->field.cqe_prev = \
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- (elm)->field.cqe_prev; \
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- if ((elm)->field.cqe_prev == (void *)(head)) \
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- (head)->cqh_first = (elm)->field.cqe_next; \
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- else \
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- (elm)->field.cqe_prev->field.cqe_next = \
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- (elm)->field.cqe_next; \
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-} while (/*CONSTCOND*/0)
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-
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-#define CIRCLEQ_FOREACH(var, head, field) \
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- for ((var) = ((head)->cqh_first); \
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- (var) != (const void *)(head); \
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- (var) = ((var)->field.cqe_next))
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-
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-#define CIRCLEQ_FOREACH_REVERSE(var, head, field) \
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- for ((var) = ((head)->cqh_last); \
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- (var) != (const void *)(head); \
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- (var) = ((var)->field.cqe_prev))
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-
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-/*
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- * Circular queue access methods.
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- */
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-#define CIRCLEQ_EMPTY(head) ((head)->cqh_first == (void *)(head))
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-#define CIRCLEQ_FIRST(head) ((head)->cqh_first)
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-#define CIRCLEQ_LAST(head) ((head)->cqh_last)
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-#define CIRCLEQ_NEXT(elm, field) ((elm)->field.cqe_next)
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-#define CIRCLEQ_PREV(elm, field) ((elm)->field.cqe_prev)
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-
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-#define CIRCLEQ_LOOP_NEXT(head, elm, field) \
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- (((elm)->field.cqe_next == (void *)(head)) \
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- ? ((head)->cqh_first) \
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- : (elm->field.cqe_next))
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-#define CIRCLEQ_LOOP_PREV(head, elm, field) \
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- (((elm)->field.cqe_prev == (void *)(head)) \
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- ? ((head)->cqh_last) \
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- : (elm->field.cqe_prev))
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-
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-#endif /* !_SYS_QUEUE_H_ */
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+/* $NetBSD: queue.h,v 1.45.14.1 2007/07/18 20:13:24 liamjfoy Exp $ */
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+
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+/*
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+ * Qemu version: Copy from netbsd, removed debug code, removed some of
|
|
|
+ * the implementations. Left in lists, tail queues and circular queues.
|
|
|
+ */
|
|
|
+
|
|
|
+/*
|
|
|
+ * Copyright (c) 1991, 1993
|
|
|
+ * The Regents of the University of California. All rights reserved.
|
|
|
+ *
|
|
|
+ * Redistribution and use in source and binary forms, with or without
|
|
|
+ * modification, are permitted provided that the following conditions
|
|
|
+ * are met:
|
|
|
+ * 1. Redistributions of source code must retain the above copyright
|
|
|
+ * notice, this list of conditions and the following disclaimer.
|
|
|
+ * 2. Redistributions in binary form must reproduce the above copyright
|
|
|
+ * notice, this list of conditions and the following disclaimer in the
|
|
|
+ * documentation and/or other materials provided with the distribution.
|
|
|
+ * 3. Neither the name of the University nor the names of its contributors
|
|
|
+ * may be used to endorse or promote products derived from this software
|
|
|
+ * without specific prior written permission.
|
|
|
+ *
|
|
|
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
|
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
|
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
+ * SUCH DAMAGE.
|
|
|
+ *
|
|
|
+ * @(#)queue.h 8.5 (Berkeley) 8/20/94
|
|
|
+ */
|
|
|
+
|
|
|
+#ifndef _SYS_QUEUE_H_
|
|
|
+#define _SYS_QUEUE_H_
|
|
|
+
|
|
|
+/*
|
|
|
+ * This file defines three types of data structures:
|
|
|
+ * lists, tail queues, and circular queues.
|
|
|
+ *
|
|
|
+ * A list is headed by a single forward pointer (or an array of forward
|
|
|
+ * pointers for a hash table header). The elements are doubly linked
|
|
|
+ * so that an arbitrary element can be removed without a need to
|
|
|
+ * traverse the list. New elements can be added to the list before
|
|
|
+ * or after an existing element or at the head of the list. A list
|
|
|
+ * may only be traversed in the forward direction.
|
|
|
+ *
|
|
|
+ * A tail queue is headed by a pair of pointers, one to the head of the
|
|
|
+ * list and the other to the tail of the list. The elements are doubly
|
|
|
+ * linked so that an arbitrary element can be removed without a need to
|
|
|
+ * traverse the list. New elements can be added to the list before or
|
|
|
+ * after an existing element, at the head of the list, or at the end of
|
|
|
+ * the list. A tail queue may be traversed in either direction.
|
|
|
+ *
|
|
|
+ * A circle queue is headed by a pair of pointers, one to the head of the
|
|
|
+ * list and the other to the tail of the list. The elements are doubly
|
|
|
+ * linked so that an arbitrary element can be removed without a need to
|
|
|
+ * traverse the list. New elements can be added to the list before or after
|
|
|
+ * an existing element, at the head of the list, or at the end of the list.
|
|
|
+ * A circle queue may be traversed in either direction, but has a more
|
|
|
+ * complex end of list detection.
|
|
|
+ *
|
|
|
+ * For details on the use of these macros, see the queue(3) manual page.
|
|
|
+ */
|
|
|
+
|
|
|
+/*
|
|
|
+ * List definitions.
|
|
|
+ */
|
|
|
+#define LIST_HEAD(name, type) \
|
|
|
+struct name { \
|
|
|
+ struct type *lh_first; /* first element */ \
|
|
|
+}
|
|
|
+
|
|
|
+#define LIST_HEAD_INITIALIZER(head) \
|
|
|
+ { NULL }
|
|
|
+
|
|
|
+#define LIST_ENTRY(type) \
|
|
|
+struct { \
|
|
|
+ struct type *le_next; /* next element */ \
|
|
|
+ struct type **le_prev; /* address of previous next element */ \
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * List functions.
|
|
|
+ */
|
|
|
+#define LIST_INIT(head) do { \
|
|
|
+ (head)->lh_first = NULL; \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define LIST_INSERT_AFTER(listelm, elm, field) do { \
|
|
|
+ if (((elm)->field.le_next = (listelm)->field.le_next) != NULL) \
|
|
|
+ (listelm)->field.le_next->field.le_prev = \
|
|
|
+ &(elm)->field.le_next; \
|
|
|
+ (listelm)->field.le_next = (elm); \
|
|
|
+ (elm)->field.le_prev = &(listelm)->field.le_next; \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define LIST_INSERT_BEFORE(listelm, elm, field) do { \
|
|
|
+ (elm)->field.le_prev = (listelm)->field.le_prev; \
|
|
|
+ (elm)->field.le_next = (listelm); \
|
|
|
+ *(listelm)->field.le_prev = (elm); \
|
|
|
+ (listelm)->field.le_prev = &(elm)->field.le_next; \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define LIST_INSERT_HEAD(head, elm, field) do { \
|
|
|
+ if (((elm)->field.le_next = (head)->lh_first) != NULL) \
|
|
|
+ (head)->lh_first->field.le_prev = &(elm)->field.le_next;\
|
|
|
+ (head)->lh_first = (elm); \
|
|
|
+ (elm)->field.le_prev = &(head)->lh_first; \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define LIST_REMOVE(elm, field) do { \
|
|
|
+ if ((elm)->field.le_next != NULL) \
|
|
|
+ (elm)->field.le_next->field.le_prev = \
|
|
|
+ (elm)->field.le_prev; \
|
|
|
+ *(elm)->field.le_prev = (elm)->field.le_next; \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define LIST_FOREACH(var, head, field) \
|
|
|
+ for ((var) = ((head)->lh_first); \
|
|
|
+ (var); \
|
|
|
+ (var) = ((var)->field.le_next))
|
|
|
+
|
|
|
+/*
|
|
|
+ * List access methods.
|
|
|
+ */
|
|
|
+#define LIST_EMPTY(head) ((head)->lh_first == NULL)
|
|
|
+#define LIST_FIRST(head) ((head)->lh_first)
|
|
|
+#define LIST_NEXT(elm, field) ((elm)->field.le_next)
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+ * Tail queue definitions.
|
|
|
+ */
|
|
|
+#define _TAILQ_HEAD(name, type, qual) \
|
|
|
+struct name { \
|
|
|
+ qual type *tqh_first; /* first element */ \
|
|
|
+ qual type *qual *tqh_last; /* addr of last next element */ \
|
|
|
+}
|
|
|
+#define TAILQ_HEAD(name, type) _TAILQ_HEAD(name, struct type,)
|
|
|
+
|
|
|
+#define TAILQ_HEAD_INITIALIZER(head) \
|
|
|
+ { NULL, &(head).tqh_first }
|
|
|
+
|
|
|
+#define _TAILQ_ENTRY(type, qual) \
|
|
|
+struct { \
|
|
|
+ qual type *tqe_next; /* next element */ \
|
|
|
+ qual type *qual *tqe_prev; /* address of previous next element */\
|
|
|
+}
|
|
|
+#define TAILQ_ENTRY(type) _TAILQ_ENTRY(struct type,)
|
|
|
+
|
|
|
+/*
|
|
|
+ * Tail queue functions.
|
|
|
+ */
|
|
|
+#define TAILQ_INIT(head) do { \
|
|
|
+ (head)->tqh_first = NULL; \
|
|
|
+ (head)->tqh_last = &(head)->tqh_first; \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define TAILQ_INSERT_HEAD(head, elm, field) do { \
|
|
|
+ if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \
|
|
|
+ (head)->tqh_first->field.tqe_prev = \
|
|
|
+ &(elm)->field.tqe_next; \
|
|
|
+ else \
|
|
|
+ (head)->tqh_last = &(elm)->field.tqe_next; \
|
|
|
+ (head)->tqh_first = (elm); \
|
|
|
+ (elm)->field.tqe_prev = &(head)->tqh_first; \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define TAILQ_INSERT_TAIL(head, elm, field) do { \
|
|
|
+ (elm)->field.tqe_next = NULL; \
|
|
|
+ (elm)->field.tqe_prev = (head)->tqh_last; \
|
|
|
+ *(head)->tqh_last = (elm); \
|
|
|
+ (head)->tqh_last = &(elm)->field.tqe_next; \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
|
|
+ if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
|
|
|
+ (elm)->field.tqe_next->field.tqe_prev = \
|
|
|
+ &(elm)->field.tqe_next; \
|
|
|
+ else \
|
|
|
+ (head)->tqh_last = &(elm)->field.tqe_next; \
|
|
|
+ (listelm)->field.tqe_next = (elm); \
|
|
|
+ (elm)->field.tqe_prev = &(listelm)->field.tqe_next; \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
|
|
|
+ (elm)->field.tqe_prev = (listelm)->field.tqe_prev; \
|
|
|
+ (elm)->field.tqe_next = (listelm); \
|
|
|
+ *(listelm)->field.tqe_prev = (elm); \
|
|
|
+ (listelm)->field.tqe_prev = &(elm)->field.tqe_next; \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define TAILQ_REMOVE(head, elm, field) do { \
|
|
|
+ if (((elm)->field.tqe_next) != NULL) \
|
|
|
+ (elm)->field.tqe_next->field.tqe_prev = \
|
|
|
+ (elm)->field.tqe_prev; \
|
|
|
+ else \
|
|
|
+ (head)->tqh_last = (elm)->field.tqe_prev; \
|
|
|
+ *(elm)->field.tqe_prev = (elm)->field.tqe_next; \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define TAILQ_FOREACH(var, head, field) \
|
|
|
+ for ((var) = ((head)->tqh_first); \
|
|
|
+ (var); \
|
|
|
+ (var) = ((var)->field.tqe_next))
|
|
|
+
|
|
|
+#define TAILQ_FOREACH_SAFE(var, head, field, next_var) \
|
|
|
+ for ((var) = ((head)->tqh_first); \
|
|
|
+ (var) && ((next_var) = ((var)->field.tqe_next), 1); \
|
|
|
+ (var) = (next_var))
|
|
|
+
|
|
|
+#define TAILQ_FOREACH_REVERSE(var, head, headname, field) \
|
|
|
+ for ((var) = (*(((struct headname *)((head)->tqh_last))->tqh_last)); \
|
|
|
+ (var); \
|
|
|
+ (var) = (*(((struct headname *)((var)->field.tqe_prev))->tqh_last)))
|
|
|
+
|
|
|
+/*
|
|
|
+ * Tail queue access methods.
|
|
|
+ */
|
|
|
+#define TAILQ_EMPTY(head) ((head)->tqh_first == NULL)
|
|
|
+#define TAILQ_FIRST(head) ((head)->tqh_first)
|
|
|
+#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
|
|
|
+
|
|
|
+#define TAILQ_LAST(head, headname) \
|
|
|
+ (*(((struct headname *)((head)->tqh_last))->tqh_last))
|
|
|
+#define TAILQ_PREV(elm, headname, field) \
|
|
|
+ (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+ * Circular queue definitions.
|
|
|
+ */
|
|
|
+#define CIRCLEQ_HEAD(name, type) \
|
|
|
+struct name { \
|
|
|
+ struct type *cqh_first; /* first element */ \
|
|
|
+ struct type *cqh_last; /* last element */ \
|
|
|
+}
|
|
|
+
|
|
|
+#define CIRCLEQ_HEAD_INITIALIZER(head) \
|
|
|
+ { (void *)&head, (void *)&head }
|
|
|
+
|
|
|
+#define CIRCLEQ_ENTRY(type) \
|
|
|
+struct { \
|
|
|
+ struct type *cqe_next; /* next element */ \
|
|
|
+ struct type *cqe_prev; /* previous element */ \
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * Circular queue functions.
|
|
|
+ */
|
|
|
+#define CIRCLEQ_INIT(head) do { \
|
|
|
+ (head)->cqh_first = (void *)(head); \
|
|
|
+ (head)->cqh_last = (void *)(head); \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
|
|
+ (elm)->field.cqe_next = (listelm)->field.cqe_next; \
|
|
|
+ (elm)->field.cqe_prev = (listelm); \
|
|
|
+ if ((listelm)->field.cqe_next == (void *)(head)) \
|
|
|
+ (head)->cqh_last = (elm); \
|
|
|
+ else \
|
|
|
+ (listelm)->field.cqe_next->field.cqe_prev = (elm); \
|
|
|
+ (listelm)->field.cqe_next = (elm); \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do { \
|
|
|
+ (elm)->field.cqe_next = (listelm); \
|
|
|
+ (elm)->field.cqe_prev = (listelm)->field.cqe_prev; \
|
|
|
+ if ((listelm)->field.cqe_prev == (void *)(head)) \
|
|
|
+ (head)->cqh_first = (elm); \
|
|
|
+ else \
|
|
|
+ (listelm)->field.cqe_prev->field.cqe_next = (elm); \
|
|
|
+ (listelm)->field.cqe_prev = (elm); \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define CIRCLEQ_INSERT_HEAD(head, elm, field) do { \
|
|
|
+ (elm)->field.cqe_next = (head)->cqh_first; \
|
|
|
+ (elm)->field.cqe_prev = (void *)(head); \
|
|
|
+ if ((head)->cqh_last == (void *)(head)) \
|
|
|
+ (head)->cqh_last = (elm); \
|
|
|
+ else \
|
|
|
+ (head)->cqh_first->field.cqe_prev = (elm); \
|
|
|
+ (head)->cqh_first = (elm); \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define CIRCLEQ_INSERT_TAIL(head, elm, field) do { \
|
|
|
+ (elm)->field.cqe_next = (void *)(head); \
|
|
|
+ (elm)->field.cqe_prev = (head)->cqh_last; \
|
|
|
+ if ((head)->cqh_first == (void *)(head)) \
|
|
|
+ (head)->cqh_first = (elm); \
|
|
|
+ else \
|
|
|
+ (head)->cqh_last->field.cqe_next = (elm); \
|
|
|
+ (head)->cqh_last = (elm); \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define CIRCLEQ_REMOVE(head, elm, field) do { \
|
|
|
+ if ((elm)->field.cqe_next == (void *)(head)) \
|
|
|
+ (head)->cqh_last = (elm)->field.cqe_prev; \
|
|
|
+ else \
|
|
|
+ (elm)->field.cqe_next->field.cqe_prev = \
|
|
|
+ (elm)->field.cqe_prev; \
|
|
|
+ if ((elm)->field.cqe_prev == (void *)(head)) \
|
|
|
+ (head)->cqh_first = (elm)->field.cqe_next; \
|
|
|
+ else \
|
|
|
+ (elm)->field.cqe_prev->field.cqe_next = \
|
|
|
+ (elm)->field.cqe_next; \
|
|
|
+} while (/*CONSTCOND*/0)
|
|
|
+
|
|
|
+#define CIRCLEQ_FOREACH(var, head, field) \
|
|
|
+ for ((var) = ((head)->cqh_first); \
|
|
|
+ (var) != (const void *)(head); \
|
|
|
+ (var) = ((var)->field.cqe_next))
|
|
|
+
|
|
|
+#define CIRCLEQ_FOREACH_REVERSE(var, head, field) \
|
|
|
+ for ((var) = ((head)->cqh_last); \
|
|
|
+ (var) != (const void *)(head); \
|
|
|
+ (var) = ((var)->field.cqe_prev))
|
|
|
+
|
|
|
+/*
|
|
|
+ * Circular queue access methods.
|
|
|
+ */
|
|
|
+#define CIRCLEQ_EMPTY(head) ((head)->cqh_first == (void *)(head))
|
|
|
+#define CIRCLEQ_FIRST(head) ((head)->cqh_first)
|
|
|
+#define CIRCLEQ_LAST(head) ((head)->cqh_last)
|
|
|
+#define CIRCLEQ_NEXT(elm, field) ((elm)->field.cqe_next)
|
|
|
+#define CIRCLEQ_PREV(elm, field) ((elm)->field.cqe_prev)
|
|
|
+
|
|
|
+#define CIRCLEQ_LOOP_NEXT(head, elm, field) \
|
|
|
+ (((elm)->field.cqe_next == (void *)(head)) \
|
|
|
+ ? ((head)->cqh_first) \
|
|
|
+ : (elm->field.cqe_next))
|
|
|
+#define CIRCLEQ_LOOP_PREV(head, elm, field) \
|
|
|
+ (((elm)->field.cqe_prev == (void *)(head)) \
|
|
|
+ ? ((head)->cqh_last) \
|
|
|
+ : (elm->field.cqe_prev))
|
|
|
+
|
|
|
+#endif /* !_SYS_QUEUE_H_ */
|
blueswir1