163 lines
6 KiB
C
163 lines
6 KiB
C
/*-
|
|
* 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.
|
|
* 4. 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
|
|
* FreeBSD: release/9.0.0/sys/sys/queue.h 221843 2011-05-13 15:49:23Z mdf
|
|
*/
|
|
|
|
#ifndef TTS_TAILQ_H
|
|
#define TTS_TAILQ_H
|
|
|
|
/*
|
|
* Tail queue declarations.
|
|
*/
|
|
#define TTS_TAILQ_HEAD(name, type) \
|
|
struct name { \
|
|
struct type *tqh_first; /* first element */ \
|
|
struct type **tqh_last; /* addr of last next element */ \
|
|
}
|
|
|
|
#define TTS_TAILQ_HEAD_INITIALIZER(head) \
|
|
{ NULL, &(head).tqh_first }
|
|
|
|
#define TTS_TAILQ_ENTRY(type) \
|
|
struct { \
|
|
struct type *tqe_next; /* next element */ \
|
|
struct type **tqe_prev; /* address of previous next element */ \
|
|
}
|
|
|
|
#define TTS_TAILQ_CONCAT(head1, head2, field) do { \
|
|
if (!TAILQ_EMPTY(head2)) { \
|
|
*(head1)->tqh_last = (head2)->tqh_first; \
|
|
(head2)->tqh_first->field.tqe_prev = (head1)->tqh_last; \
|
|
(head1)->tqh_last = (head2)->tqh_last; \
|
|
TTS_TAILQ_INIT((head2)); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define TTS_TAILQ_EMPTY(head) ((head)->tqh_first == NULL)
|
|
|
|
#define TTS_TAILQ_FIRST(head) ((head)->tqh_first)
|
|
|
|
#define TTS_TAILQ_FOREACH(var, head, field) \
|
|
for ((var) = TTS_TAILQ_FIRST((head)); \
|
|
(var); \
|
|
(var) = TTS_TAILQ_NEXT((var), field))
|
|
|
|
#define TTS_TAILQ_FOREACH_SAFE(var, head, field, tvar) \
|
|
for ((var) = TTS_TAILQ_FIRST((head)); \
|
|
(var) && ((tvar) = TTS_TAILQ_NEXT((var), field), 1); \
|
|
(var) = (tvar))
|
|
|
|
#define TTS_TAILQ_FOREACH_REVERSE(var, head, headname, field) \
|
|
for ((var) = TTS_TAILQ_LAST((head), headname); \
|
|
(var); \
|
|
(var) = TTS_TAILQ_PREV((var), headname, field))
|
|
|
|
#define TTS_TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar)\
|
|
for ((var) = TTS_TAILQ_LAST((head), headname); \
|
|
(var) && ((tvar) = TTS_TAILQ_PREV((var), headname, field), 1); \
|
|
(var) = (tvar))
|
|
|
|
#define TTS_TAILQ_INIT(head) do { \
|
|
TTS_TAILQ_FIRST((head)) = NULL; \
|
|
(head)->tqh_last = &TTS_TAILQ_FIRST((head)); \
|
|
} while (0)
|
|
|
|
#define TTS_TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
|
if ((TTS_TAILQ_NEXT((elm), field) = TAILQ_NEXT((listelm), field)) != NULL)\
|
|
TTS_TAILQ_NEXT((elm), field)->field.tqe_prev = \
|
|
&TTS_TAILQ_NEXT((elm), field); \
|
|
else { \
|
|
(head)->tqh_last = &TTS_TAILQ_NEXT((elm), field); \
|
|
} \
|
|
TTS_TAILQ_NEXT((listelm), field) = (elm); \
|
|
(elm)->field.tqe_prev = &TTS_TAILQ_NEXT((listelm), field); \
|
|
} while (0)
|
|
|
|
#define TTS_TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
|
|
(elm)->field.tqe_prev = (listelm)->field.tqe_prev; \
|
|
TTS_TAILQ_NEXT((elm), field) = (listelm); \
|
|
*(listelm)->field.tqe_prev = (elm); \
|
|
(listelm)->field.tqe_prev = &TTS_TAILQ_NEXT((elm), field); \
|
|
} while (0)
|
|
|
|
#define TTS_TAILQ_INSERT_HEAD(head, elm, field) do { \
|
|
if ((TTS_TAILQ_NEXT((elm), field) = TTS_TAILQ_FIRST((head))) != NULL) \
|
|
TTS_TAILQ_FIRST((head))->field.tqe_prev = \
|
|
&TTS_TAILQ_NEXT((elm), field); \
|
|
else \
|
|
(head)->tqh_last = &TTS_TAILQ_NEXT((elm), field); \
|
|
TTS_TAILQ_FIRST((head)) = (elm); \
|
|
(elm)->field.tqe_prev = &TTS_TAILQ_FIRST((head)); \
|
|
} while (0)
|
|
|
|
#define TTS_TAILQ_INSERT_TAIL(head, elm, field) do { \
|
|
TTS_TAILQ_NEXT((elm), field) = NULL; \
|
|
(elm)->field.tqe_prev = (head)->tqh_last; \
|
|
*(head)->tqh_last = (elm); \
|
|
(head)->tqh_last = &TTS_TAILQ_NEXT((elm), field); \
|
|
} while (0)
|
|
|
|
#define TTS_TAILQ_LAST(head, headname) \
|
|
(*(((struct headname *)((head)->tqh_last))->tqh_last))
|
|
|
|
#define TTS_TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
|
|
|
|
#define TTS_TAILQ_PREV(elm, headname, field) \
|
|
(*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
|
|
|
|
#define TTS_TAILQ_REMOVE(head, elm, field) do { \
|
|
if ((TTS_TAILQ_NEXT((elm), field)) != NULL) \
|
|
TTS_TAILQ_NEXT((elm), field)->field.tqe_prev = \
|
|
(elm)->field.tqe_prev; \
|
|
else { \
|
|
(head)->tqh_last = (elm)->field.tqe_prev; \
|
|
} \
|
|
*(elm)->field.tqe_prev = TTS_TAILQ_NEXT((elm), field); \
|
|
} while (0)
|
|
|
|
#define TTS_TAILQ_SWAP(head1, head2, type, field) do { \
|
|
struct type *swap_first = (head1)->tqh_first; \
|
|
struct type **swap_last = (head1)->tqh_last; \
|
|
(head1)->tqh_first = (head2)->tqh_first; \
|
|
(head1)->tqh_last = (head2)->tqh_last; \
|
|
(head2)->tqh_first = swap_first; \
|
|
(head2)->tqh_last = swap_last; \
|
|
if ((swap_first = (head1)->tqh_first) != NULL) \
|
|
swap_first->field.tqe_prev = &(head1)->tqh_first; \
|
|
else \
|
|
(head1)->tqh_last = &(head1)->tqh_first; \
|
|
if ((swap_first = (head2)->tqh_first) != NULL) \
|
|
swap_first->field.tqe_prev = &(head2)->tqh_first; \
|
|
else \
|
|
(head2)->tqh_last = &(head2)->tqh_first; \
|
|
} while (0)
|
|
|
|
|
|
#endif /* !TTS_TAILQ_H */
|