//==========================================================================
|
//==========================================================================
|
//
|
//
|
// include/sys/queue.h
|
// include/sys/queue.h
|
//
|
//
|
//==========================================================================
|
//==========================================================================
|
//####BSDCOPYRIGHTBEGIN####
|
//####BSDCOPYRIGHTBEGIN####
|
//
|
//
|
// -------------------------------------------
|
// -------------------------------------------
|
//
|
//
|
// Portions of this software may have been derived from OpenBSD,
|
// Portions of this software may have been derived from OpenBSD,
|
// FreeBSD or other sources, and are covered by the appropriate
|
// FreeBSD or other sources, and are covered by the appropriate
|
// copyright disclaimers included herein.
|
// copyright disclaimers included herein.
|
//
|
//
|
// Portions created by Red Hat are
|
// Portions created by Red Hat are
|
// Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
|
// Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
|
//
|
//
|
// -------------------------------------------
|
// -------------------------------------------
|
//
|
//
|
//####BSDCOPYRIGHTEND####
|
//####BSDCOPYRIGHTEND####
|
//==========================================================================
|
//==========================================================================
|
|
|
/*
|
/*
|
* Copyright (c) 1991, 1993
|
* Copyright (c) 1991, 1993
|
* The Regents of the University of California. All rights reserved.
|
* The Regents of the University of California. All rights reserved.
|
*
|
*
|
* Redistribution and use in source and binary forms, with or without
|
* Redistribution and use in source and binary forms, with or without
|
* modification, are permitted provided that the following conditions
|
* modification, are permitted provided that the following conditions
|
* are met:
|
* are met:
|
* 1. Redistributions of source code must retain the above copyright
|
* 1. Redistributions of source code must retain the above copyright
|
* notice, this list of conditions and the following disclaimer.
|
* notice, this list of conditions and the following disclaimer.
|
* 2. Redistributions in binary form must reproduce the above copyright
|
* 2. Redistributions in binary form must reproduce the above copyright
|
* notice, this list of conditions and the following disclaimer in the
|
* notice, this list of conditions and the following disclaimer in the
|
* documentation and/or other materials provided with the distribution.
|
* documentation and/or other materials provided with the distribution.
|
* 3. All advertising materials mentioning features or use of this software
|
* 3. All advertising materials mentioning features or use of this software
|
* must display the following acknowledgement:
|
* must display the following acknowledgement:
|
* This product includes software developed by the University of
|
* This product includes software developed by the University of
|
* California, Berkeley and its contributors.
|
* California, Berkeley and its contributors.
|
* 4. Neither the name of the University nor the names of its contributors
|
* 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
|
* may be used to endorse or promote products derived from this software
|
* without specific prior written permission.
|
* without specific prior written permission.
|
*
|
*
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
* 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
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
* SUCH DAMAGE.
|
* SUCH DAMAGE.
|
*
|
*
|
* @(#)queue.h 8.5 (Berkeley) 8/20/94
|
* @(#)queue.h 8.5 (Berkeley) 8/20/94
|
* $FreeBSD: src/sys/sys/queue.h,v 1.32.2.4 2001/03/31 03:33:39 hsu Exp $
|
* $FreeBSD: src/sys/sys/queue.h,v 1.32.2.4 2001/03/31 03:33:39 hsu Exp $
|
*/
|
*/
|
|
|
#ifndef _SYS_QUEUE_H_
|
#ifndef _SYS_QUEUE_H_
|
#define _SYS_QUEUE_H_
|
#define _SYS_QUEUE_H_
|
|
|
/*
|
/*
|
* This file defines five types of data structures: singly-linked lists,
|
* This file defines five types of data structures: singly-linked lists,
|
* singly-linked tail queues, lists, tail queues, and circular queues.
|
* singly-linked tail queues, lists, tail queues, and circular queues.
|
*
|
*
|
* A singly-linked list is headed by a single forward pointer. The elements
|
* A singly-linked list is headed by a single forward pointer. The elements
|
* are singly linked for minimum space and pointer manipulation overhead at
|
* are singly linked for minimum space and pointer manipulation overhead at
|
* the expense of O(n) removal for arbitrary elements. New elements can be
|
* the expense of O(n) removal for arbitrary elements. New elements can be
|
* added to the list after an existing element or at the head of the list.
|
* added to the list after an existing element or at the head of the list.
|
* Elements being removed from the head of the list should use the explicit
|
* Elements being removed from the head of the list should use the explicit
|
* macro for this purpose for optimum efficiency. A singly-linked list may
|
* macro for this purpose for optimum efficiency. A singly-linked list may
|
* only be traversed in the forward direction. Singly-linked lists are ideal
|
* only be traversed in the forward direction. Singly-linked lists are ideal
|
* for applications with large datasets and few or no removals or for
|
* for applications with large datasets and few or no removals or for
|
* implementing a LIFO queue.
|
* implementing a LIFO queue.
|
*
|
*
|
* A singly-linked tail queue is headed by a pair of pointers, one to the
|
* A singly-linked 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
|
* head of the list and the other to the tail of the list. The elements are
|
* singly linked for minimum space and pointer manipulation overhead at the
|
* singly linked for minimum space and pointer manipulation overhead at the
|
* expense of O(n) removal for arbitrary elements. New elements can be added
|
* expense of O(n) removal for arbitrary elements. New elements can be added
|
* to the list after an existing element, at the head of the list, or at the
|
* to the list after an existing element, at the head of the list, or at the
|
* end of the list. Elements being removed from the head of the tail queue
|
* end of the list. Elements being removed from the head of the tail queue
|
* should use the explicit macro for this purpose for optimum efficiency.
|
* should use the explicit macro for this purpose for optimum efficiency.
|
* A singly-linked tail queue may only be traversed in the forward direction.
|
* A singly-linked tail queue may only be traversed in the forward direction.
|
* Singly-linked tail queues are ideal for applications with large datasets
|
* Singly-linked tail queues are ideal for applications with large datasets
|
* and few or no removals or for implementing a FIFO queue.
|
* and few or no removals or for implementing a FIFO queue.
|
*
|
*
|
* A list is headed by a single forward pointer (or an array of forward
|
* 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
|
* pointers for a hash table header). The elements are doubly linked
|
* so that an arbitrary element can be removed without a need to
|
* so that an arbitrary element can be removed without a need to
|
* traverse the list. New elements can be added to the list before
|
* 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
|
* or after an existing element or at the head of the list. A list
|
* may only be traversed in the forward direction.
|
* may only be traversed in the forward direction.
|
*
|
*
|
* A tail queue is headed by a pair of pointers, one to the head of the
|
* 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
|
* 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
|
* 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
|
* 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
|
* 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.
|
* 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
|
* 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
|
* 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
|
* 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
|
* 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.
|
* 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
|
* A circle queue may be traversed in either direction, but has a more
|
* complex end of list detection.
|
* complex end of list detection.
|
*
|
*
|
* For details on the use of these macros, see the queue(3) manual page.
|
* For details on the use of these macros, see the queue(3) manual page.
|
*
|
*
|
*
|
*
|
* SLIST LIST STAILQ TAILQ CIRCLEQ
|
* SLIST LIST STAILQ TAILQ CIRCLEQ
|
* _HEAD + + + + +
|
* _HEAD + + + + +
|
* _ENTRY + + + + +
|
* _ENTRY + + + + +
|
* _INIT + + + + +
|
* _INIT + + + + +
|
* _EMPTY + + + + +
|
* _EMPTY + + + + +
|
* _FIRST + + + + +
|
* _FIRST + + + + +
|
* _NEXT + + + + +
|
* _NEXT + + + + +
|
* _PREV - - - + +
|
* _PREV - - - + +
|
* _LAST - - + + +
|
* _LAST - - + + +
|
* _FOREACH + + + + +
|
* _FOREACH + + + + +
|
* _FOREACH_REVERSE - - - + +
|
* _FOREACH_REVERSE - - - + +
|
* _INSERT_HEAD + + + + +
|
* _INSERT_HEAD + + + + +
|
* _INSERT_BEFORE - + - + +
|
* _INSERT_BEFORE - + - + +
|
* _INSERT_AFTER + + + + +
|
* _INSERT_AFTER + + + + +
|
* _INSERT_TAIL - - + + +
|
* _INSERT_TAIL - - + + +
|
* _REMOVE_HEAD + - + - -
|
* _REMOVE_HEAD + - + - -
|
* _REMOVE + + + + +
|
* _REMOVE + + + + +
|
*
|
*
|
*/
|
*/
|
|
|
/*
|
/*
|
* Singly-linked List definitions.
|
* Singly-linked List definitions.
|
*/
|
*/
|
#define SLIST_HEAD(name, type) \
|
#define SLIST_HEAD(name, type) \
|
struct name { \
|
struct name { \
|
struct type *slh_first; /* first element */ \
|
struct type *slh_first; /* first element */ \
|
}
|
}
|
|
|
#define SLIST_HEAD_INITIALIZER(head) \
|
#define SLIST_HEAD_INITIALIZER(head) \
|
{ NULL }
|
{ NULL }
|
|
|
#define SLIST_ENTRY(type) \
|
#define SLIST_ENTRY(type) \
|
struct { \
|
struct { \
|
struct type *sle_next; /* next element */ \
|
struct type *sle_next; /* next element */ \
|
}
|
}
|
|
|
/*
|
/*
|
* Singly-linked List functions.
|
* Singly-linked List functions.
|
*/
|
*/
|
#define SLIST_EMPTY(head) ((head)->slh_first == NULL)
|
#define SLIST_EMPTY(head) ((head)->slh_first == NULL)
|
|
|
#define SLIST_FIRST(head) ((head)->slh_first)
|
#define SLIST_FIRST(head) ((head)->slh_first)
|
|
|
#define SLIST_FOREACH(var, head, field) \
|
#define SLIST_FOREACH(var, head, field) \
|
for((var) = (head)->slh_first; (var); (var) = (var)->field.sle_next)
|
for((var) = (head)->slh_first; (var); (var) = (var)->field.sle_next)
|
|
|
#define SLIST_INIT(head) { \
|
#define SLIST_INIT(head) { \
|
(head)->slh_first = NULL; \
|
(head)->slh_first = NULL; \
|
}
|
}
|
|
|
#define SLIST_INSERT_AFTER(slistelm, elm, field) do { \
|
#define SLIST_INSERT_AFTER(slistelm, elm, field) do { \
|
(elm)->field.sle_next = (slistelm)->field.sle_next; \
|
(elm)->field.sle_next = (slistelm)->field.sle_next; \
|
(slistelm)->field.sle_next = (elm); \
|
(slistelm)->field.sle_next = (elm); \
|
} while (0)
|
} while (0)
|
|
|
#define SLIST_INSERT_HEAD(head, elm, field) do { \
|
#define SLIST_INSERT_HEAD(head, elm, field) do { \
|
(elm)->field.sle_next = (head)->slh_first; \
|
(elm)->field.sle_next = (head)->slh_first; \
|
(head)->slh_first = (elm); \
|
(head)->slh_first = (elm); \
|
} while (0)
|
} while (0)
|
|
|
#define SLIST_NEXT(elm, field) ((elm)->field.sle_next)
|
#define SLIST_NEXT(elm, field) ((elm)->field.sle_next)
|
|
|
#define SLIST_REMOVE_HEAD(head, field) do { \
|
#define SLIST_REMOVE_HEAD(head, field) do { \
|
(head)->slh_first = (head)->slh_first->field.sle_next; \
|
(head)->slh_first = (head)->slh_first->field.sle_next; \
|
} while (0)
|
} while (0)
|
|
|
#define SLIST_REMOVE(head, elm, type, field) do { \
|
#define SLIST_REMOVE(head, elm, type, field) do { \
|
if ((head)->slh_first == (elm)) { \
|
if ((head)->slh_first == (elm)) { \
|
SLIST_REMOVE_HEAD((head), field); \
|
SLIST_REMOVE_HEAD((head), field); \
|
} \
|
} \
|
else { \
|
else { \
|
struct type *curelm = (head)->slh_first; \
|
struct type *curelm = (head)->slh_first; \
|
while( curelm->field.sle_next != (elm) ) \
|
while( curelm->field.sle_next != (elm) ) \
|
curelm = curelm->field.sle_next; \
|
curelm = curelm->field.sle_next; \
|
curelm->field.sle_next = \
|
curelm->field.sle_next = \
|
curelm->field.sle_next->field.sle_next; \
|
curelm->field.sle_next->field.sle_next; \
|
} \
|
} \
|
} while (0)
|
} while (0)
|
|
|
/*
|
/*
|
* Singly-linked Tail queue definitions.
|
* Singly-linked Tail queue definitions.
|
*/
|
*/
|
#define STAILQ_HEAD(name, type) \
|
#define STAILQ_HEAD(name, type) \
|
struct name { \
|
struct name { \
|
struct type *stqh_first;/* first element */ \
|
struct type *stqh_first;/* first element */ \
|
struct type **stqh_last;/* addr of last next element */ \
|
struct type **stqh_last;/* addr of last next element */ \
|
}
|
}
|
|
|
#define STAILQ_HEAD_INITIALIZER(head) \
|
#define STAILQ_HEAD_INITIALIZER(head) \
|
{ NULL, &(head).stqh_first }
|
{ NULL, &(head).stqh_first }
|
|
|
#define STAILQ_ENTRY(type) \
|
#define STAILQ_ENTRY(type) \
|
struct { \
|
struct { \
|
struct type *stqe_next; /* next element */ \
|
struct type *stqe_next; /* next element */ \
|
}
|
}
|
|
|
/*
|
/*
|
* Singly-linked Tail queue functions.
|
* Singly-linked Tail queue functions.
|
*/
|
*/
|
#define STAILQ_EMPTY(head) ((head)->stqh_first == NULL)
|
#define STAILQ_EMPTY(head) ((head)->stqh_first == NULL)
|
|
|
#define STAILQ_INIT(head) do { \
|
#define STAILQ_INIT(head) do { \
|
(head)->stqh_first = NULL; \
|
(head)->stqh_first = NULL; \
|
(head)->stqh_last = &(head)->stqh_first; \
|
(head)->stqh_last = &(head)->stqh_first; \
|
} while (0)
|
} while (0)
|
|
|
#define STAILQ_FIRST(head) ((head)->stqh_first)
|
#define STAILQ_FIRST(head) ((head)->stqh_first)
|
|
|
#define STAILQ_LAST(head, type, field) \
|
#define STAILQ_LAST(head, type, field) \
|
(STAILQ_EMPTY(head) ? \
|
(STAILQ_EMPTY(head) ? \
|
NULL : \
|
NULL : \
|
((struct type *) \
|
((struct type *) \
|
((char *)((head)->stqh_last) - __offsetof(struct type, field))))
|
((char *)((head)->stqh_last) - __offsetof(struct type, field))))
|
|
|
#define STAILQ_FOREACH(var, head, field) \
|
#define STAILQ_FOREACH(var, head, field) \
|
for((var) = (head)->stqh_first; (var); (var) = (var)->field.stqe_next)
|
for((var) = (head)->stqh_first; (var); (var) = (var)->field.stqe_next)
|
|
|
#define STAILQ_INSERT_HEAD(head, elm, field) do { \
|
#define STAILQ_INSERT_HEAD(head, elm, field) do { \
|
if (((elm)->field.stqe_next = (head)->stqh_first) == NULL) \
|
if (((elm)->field.stqe_next = (head)->stqh_first) == NULL) \
|
(head)->stqh_last = &(elm)->field.stqe_next; \
|
(head)->stqh_last = &(elm)->field.stqe_next; \
|
(head)->stqh_first = (elm); \
|
(head)->stqh_first = (elm); \
|
} while (0)
|
} while (0)
|
|
|
#define STAILQ_INSERT_TAIL(head, elm, field) do { \
|
#define STAILQ_INSERT_TAIL(head, elm, field) do { \
|
(elm)->field.stqe_next = NULL; \
|
(elm)->field.stqe_next = NULL; \
|
*(head)->stqh_last = (elm); \
|
*(head)->stqh_last = (elm); \
|
(head)->stqh_last = &(elm)->field.stqe_next; \
|
(head)->stqh_last = &(elm)->field.stqe_next; \
|
} while (0)
|
} while (0)
|
|
|
#define STAILQ_INSERT_AFTER(head, tqelm, elm, field) do { \
|
#define STAILQ_INSERT_AFTER(head, tqelm, elm, field) do { \
|
if (((elm)->field.stqe_next = (tqelm)->field.stqe_next) == NULL)\
|
if (((elm)->field.stqe_next = (tqelm)->field.stqe_next) == NULL)\
|
(head)->stqh_last = &(elm)->field.stqe_next; \
|
(head)->stqh_last = &(elm)->field.stqe_next; \
|
(tqelm)->field.stqe_next = (elm); \
|
(tqelm)->field.stqe_next = (elm); \
|
} while (0)
|
} while (0)
|
|
|
#define STAILQ_NEXT(elm, field) ((elm)->field.stqe_next)
|
#define STAILQ_NEXT(elm, field) ((elm)->field.stqe_next)
|
|
|
#define STAILQ_REMOVE_HEAD(head, field) do { \
|
#define STAILQ_REMOVE_HEAD(head, field) do { \
|
if (((head)->stqh_first = \
|
if (((head)->stqh_first = \
|
(head)->stqh_first->field.stqe_next) == NULL) \
|
(head)->stqh_first->field.stqe_next) == NULL) \
|
(head)->stqh_last = &(head)->stqh_first; \
|
(head)->stqh_last = &(head)->stqh_first; \
|
} while (0)
|
} while (0)
|
|
|
#define STAILQ_REMOVE_HEAD_UNTIL(head, elm, field) do { \
|
#define STAILQ_REMOVE_HEAD_UNTIL(head, elm, field) do { \
|
if (((head)->stqh_first = (elm)->field.stqe_next) == NULL) \
|
if (((head)->stqh_first = (elm)->field.stqe_next) == NULL) \
|
(head)->stqh_last = &(head)->stqh_first; \
|
(head)->stqh_last = &(head)->stqh_first; \
|
} while (0)
|
} while (0)
|
|
|
#define STAILQ_REMOVE(head, elm, type, field) do { \
|
#define STAILQ_REMOVE(head, elm, type, field) do { \
|
if ((head)->stqh_first == (elm)) { \
|
if ((head)->stqh_first == (elm)) { \
|
STAILQ_REMOVE_HEAD(head, field); \
|
STAILQ_REMOVE_HEAD(head, field); \
|
} \
|
} \
|
else { \
|
else { \
|
struct type *curelm = (head)->stqh_first; \
|
struct type *curelm = (head)->stqh_first; \
|
while( curelm->field.stqe_next != (elm) ) \
|
while( curelm->field.stqe_next != (elm) ) \
|
curelm = curelm->field.stqe_next; \
|
curelm = curelm->field.stqe_next; \
|
if((curelm->field.stqe_next = \
|
if((curelm->field.stqe_next = \
|
curelm->field.stqe_next->field.stqe_next) == NULL) \
|
curelm->field.stqe_next->field.stqe_next) == NULL) \
|
(head)->stqh_last = &(curelm)->field.stqe_next; \
|
(head)->stqh_last = &(curelm)->field.stqe_next; \
|
} \
|
} \
|
} while (0)
|
} while (0)
|
|
|
/*
|
/*
|
* List definitions.
|
* List definitions.
|
*/
|
*/
|
#define LIST_HEAD(name, type) \
|
#define LIST_HEAD(name, type) \
|
struct name { \
|
struct name { \
|
struct type *lh_first; /* first element */ \
|
struct type *lh_first; /* first element */ \
|
}
|
}
|
|
|
#define LIST_HEAD_INITIALIZER(head) \
|
#define LIST_HEAD_INITIALIZER(head) \
|
{ NULL }
|
{ NULL }
|
|
|
#define LIST_ENTRY(type) \
|
#define LIST_ENTRY(type) \
|
struct { \
|
struct { \
|
struct type *le_next; /* next element */ \
|
struct type *le_next; /* next element */ \
|
struct type **le_prev; /* address of previous next element */ \
|
struct type **le_prev; /* address of previous next element */ \
|
}
|
}
|
|
|
/*
|
/*
|
* List functions.
|
* List functions.
|
*/
|
*/
|
|
|
#define LIST_EMPTY(head) ((head)->lh_first == NULL)
|
#define LIST_EMPTY(head) ((head)->lh_first == NULL)
|
|
|
#define LIST_FIRST(head) ((head)->lh_first)
|
#define LIST_FIRST(head) ((head)->lh_first)
|
|
|
#define LIST_FOREACH(var, head, field) \
|
#define LIST_FOREACH(var, head, field) \
|
for((var) = (head)->lh_first; (var); (var) = (var)->field.le_next)
|
for((var) = (head)->lh_first; (var); (var) = (var)->field.le_next)
|
|
|
#define LIST_INIT(head) do { \
|
#define LIST_INIT(head) do { \
|
(head)->lh_first = NULL; \
|
(head)->lh_first = NULL; \
|
} while (0)
|
} while (0)
|
|
|
#define LIST_INSERT_AFTER(listelm, elm, field) do { \
|
#define LIST_INSERT_AFTER(listelm, elm, field) do { \
|
if (((elm)->field.le_next = (listelm)->field.le_next) != NULL) \
|
if (((elm)->field.le_next = (listelm)->field.le_next) != NULL) \
|
(listelm)->field.le_next->field.le_prev = \
|
(listelm)->field.le_next->field.le_prev = \
|
&(elm)->field.le_next; \
|
&(elm)->field.le_next; \
|
(listelm)->field.le_next = (elm); \
|
(listelm)->field.le_next = (elm); \
|
(elm)->field.le_prev = &(listelm)->field.le_next; \
|
(elm)->field.le_prev = &(listelm)->field.le_next; \
|
} while (0)
|
} while (0)
|
|
|
#define LIST_INSERT_BEFORE(listelm, elm, field) do { \
|
#define LIST_INSERT_BEFORE(listelm, elm, field) do { \
|
(elm)->field.le_prev = (listelm)->field.le_prev; \
|
(elm)->field.le_prev = (listelm)->field.le_prev; \
|
(elm)->field.le_next = (listelm); \
|
(elm)->field.le_next = (listelm); \
|
*(listelm)->field.le_prev = (elm); \
|
*(listelm)->field.le_prev = (elm); \
|
(listelm)->field.le_prev = &(elm)->field.le_next; \
|
(listelm)->field.le_prev = &(elm)->field.le_next; \
|
} while (0)
|
} while (0)
|
|
|
#define LIST_INSERT_HEAD(head, elm, field) do { \
|
#define LIST_INSERT_HEAD(head, elm, field) do { \
|
if (((elm)->field.le_next = (head)->lh_first) != NULL) \
|
if (((elm)->field.le_next = (head)->lh_first) != NULL) \
|
(head)->lh_first->field.le_prev = &(elm)->field.le_next;\
|
(head)->lh_first->field.le_prev = &(elm)->field.le_next;\
|
(head)->lh_first = (elm); \
|
(head)->lh_first = (elm); \
|
(elm)->field.le_prev = &(head)->lh_first; \
|
(elm)->field.le_prev = &(head)->lh_first; \
|
} while (0)
|
} while (0)
|
|
|
#define LIST_NEXT(elm, field) ((elm)->field.le_next)
|
#define LIST_NEXT(elm, field) ((elm)->field.le_next)
|
|
|
#define LIST_REMOVE(elm, field) do { \
|
#define LIST_REMOVE(elm, field) do { \
|
if ((elm)->field.le_next != NULL) \
|
if ((elm)->field.le_next != NULL) \
|
(elm)->field.le_next->field.le_prev = \
|
(elm)->field.le_next->field.le_prev = \
|
(elm)->field.le_prev; \
|
(elm)->field.le_prev; \
|
*(elm)->field.le_prev = (elm)->field.le_next; \
|
*(elm)->field.le_prev = (elm)->field.le_next; \
|
} while (0)
|
} while (0)
|
|
|
/*
|
/*
|
* Tail queue definitions.
|
* Tail queue definitions.
|
*/
|
*/
|
#define TAILQ_HEAD(name, type) \
|
#define TAILQ_HEAD(name, type) \
|
struct name { \
|
struct name { \
|
struct type *tqh_first; /* first element */ \
|
struct type *tqh_first; /* first element */ \
|
struct type **tqh_last; /* addr of last next element */ \
|
struct type **tqh_last; /* addr of last next element */ \
|
}
|
}
|
|
|
#define TAILQ_HEAD_INITIALIZER(head) \
|
#define TAILQ_HEAD_INITIALIZER(head) \
|
{ NULL, &(head).tqh_first }
|
{ NULL, &(head).tqh_first }
|
|
|
#define TAILQ_ENTRY(type) \
|
#define TAILQ_ENTRY(type) \
|
struct { \
|
struct { \
|
struct type *tqe_next; /* next element */ \
|
struct type *tqe_next; /* next element */ \
|
struct type **tqe_prev; /* address of previous next element */ \
|
struct type **tqe_prev; /* address of previous next element */ \
|
}
|
}
|
|
|
/*
|
/*
|
* Tail queue functions.
|
* Tail queue functions.
|
*/
|
*/
|
#define TAILQ_EMPTY(head) ((head)->tqh_first == NULL)
|
#define TAILQ_EMPTY(head) ((head)->tqh_first == NULL)
|
|
|
#define TAILQ_FOREACH(var, head, field) \
|
#define TAILQ_FOREACH(var, head, field) \
|
for (var = TAILQ_FIRST(head); var; var = TAILQ_NEXT(var, field))
|
for (var = TAILQ_FIRST(head); var; var = TAILQ_NEXT(var, field))
|
|
|
#define TAILQ_FOREACH_REVERSE(var, head, headname, field) \
|
#define TAILQ_FOREACH_REVERSE(var, head, headname, field) \
|
for ((var) = TAILQ_LAST((head), headname); \
|
for ((var) = TAILQ_LAST((head), headname); \
|
(var); \
|
(var); \
|
(var) = TAILQ_PREV((var), headname, field))
|
(var) = TAILQ_PREV((var), headname, field))
|
|
|
#define TAILQ_FIRST(head) ((head)->tqh_first)
|
#define TAILQ_FIRST(head) ((head)->tqh_first)
|
|
|
#define TAILQ_LAST(head, headname) \
|
#define TAILQ_LAST(head, headname) \
|
(*(((struct headname *)((head)->tqh_last))->tqh_last))
|
(*(((struct headname *)((head)->tqh_last))->tqh_last))
|
|
|
#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
|
#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
|
|
|
#define TAILQ_PREV(elm, headname, field) \
|
#define TAILQ_PREV(elm, headname, field) \
|
(*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
|
(*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
|
|
|
#define TAILQ_INIT(head) do { \
|
#define TAILQ_INIT(head) do { \
|
(head)->tqh_first = NULL; \
|
(head)->tqh_first = NULL; \
|
(head)->tqh_last = &(head)->tqh_first; \
|
(head)->tqh_last = &(head)->tqh_first; \
|
} while (0)
|
} while (0)
|
|
|
#define TAILQ_INSERT_HEAD(head, elm, field) do { \
|
#define TAILQ_INSERT_HEAD(head, elm, field) do { \
|
if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \
|
if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \
|
(head)->tqh_first->field.tqe_prev = \
|
(head)->tqh_first->field.tqe_prev = \
|
&(elm)->field.tqe_next; \
|
&(elm)->field.tqe_next; \
|
else \
|
else \
|
(head)->tqh_last = &(elm)->field.tqe_next; \
|
(head)->tqh_last = &(elm)->field.tqe_next; \
|
(head)->tqh_first = (elm); \
|
(head)->tqh_first = (elm); \
|
(elm)->field.tqe_prev = &(head)->tqh_first; \
|
(elm)->field.tqe_prev = &(head)->tqh_first; \
|
} while (0)
|
} while (0)
|
|
|
#define TAILQ_INSERT_TAIL(head, elm, field) do { \
|
#define TAILQ_INSERT_TAIL(head, elm, field) do { \
|
(elm)->field.tqe_next = NULL; \
|
(elm)->field.tqe_next = NULL; \
|
(elm)->field.tqe_prev = (head)->tqh_last; \
|
(elm)->field.tqe_prev = (head)->tqh_last; \
|
*(head)->tqh_last = (elm); \
|
*(head)->tqh_last = (elm); \
|
(head)->tqh_last = &(elm)->field.tqe_next; \
|
(head)->tqh_last = &(elm)->field.tqe_next; \
|
} while (0)
|
} while (0)
|
|
|
#define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
#define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
|
if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
|
(elm)->field.tqe_next->field.tqe_prev = \
|
(elm)->field.tqe_next->field.tqe_prev = \
|
&(elm)->field.tqe_next; \
|
&(elm)->field.tqe_next; \
|
else \
|
else \
|
(head)->tqh_last = &(elm)->field.tqe_next; \
|
(head)->tqh_last = &(elm)->field.tqe_next; \
|
(listelm)->field.tqe_next = (elm); \
|
(listelm)->field.tqe_next = (elm); \
|
(elm)->field.tqe_prev = &(listelm)->field.tqe_next; \
|
(elm)->field.tqe_prev = &(listelm)->field.tqe_next; \
|
} while (0)
|
} while (0)
|
|
|
#define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
|
#define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
|
(elm)->field.tqe_prev = (listelm)->field.tqe_prev; \
|
(elm)->field.tqe_prev = (listelm)->field.tqe_prev; \
|
(elm)->field.tqe_next = (listelm); \
|
(elm)->field.tqe_next = (listelm); \
|
*(listelm)->field.tqe_prev = (elm); \
|
*(listelm)->field.tqe_prev = (elm); \
|
(listelm)->field.tqe_prev = &(elm)->field.tqe_next; \
|
(listelm)->field.tqe_prev = &(elm)->field.tqe_next; \
|
} while (0)
|
} while (0)
|
|
|
#define TAILQ_REMOVE(head, elm, field) do { \
|
#define TAILQ_REMOVE(head, elm, field) do { \
|
if (((elm)->field.tqe_next) != NULL) \
|
if (((elm)->field.tqe_next) != NULL) \
|
(elm)->field.tqe_next->field.tqe_prev = \
|
(elm)->field.tqe_next->field.tqe_prev = \
|
(elm)->field.tqe_prev; \
|
(elm)->field.tqe_prev; \
|
else \
|
else \
|
(head)->tqh_last = (elm)->field.tqe_prev; \
|
(head)->tqh_last = (elm)->field.tqe_prev; \
|
*(elm)->field.tqe_prev = (elm)->field.tqe_next; \
|
*(elm)->field.tqe_prev = (elm)->field.tqe_next; \
|
} while (0)
|
} while (0)
|
|
|
/*
|
/*
|
* Circular queue definitions.
|
* Circular queue definitions.
|
*/
|
*/
|
#define CIRCLEQ_HEAD(name, type) \
|
#define CIRCLEQ_HEAD(name, type) \
|
struct name { \
|
struct name { \
|
struct type *cqh_first; /* first element */ \
|
struct type *cqh_first; /* first element */ \
|
struct type *cqh_last; /* last element */ \
|
struct type *cqh_last; /* last element */ \
|
}
|
}
|
|
|
#define CIRCLEQ_ENTRY(type) \
|
#define CIRCLEQ_ENTRY(type) \
|
struct { \
|
struct { \
|
struct type *cqe_next; /* next element */ \
|
struct type *cqe_next; /* next element */ \
|
struct type *cqe_prev; /* previous element */ \
|
struct type *cqe_prev; /* previous element */ \
|
}
|
}
|
|
|
/*
|
/*
|
* Circular queue functions.
|
* Circular queue functions.
|
*/
|
*/
|
#define CIRCLEQ_EMPTY(head) ((head)->cqh_first == (void *)(head))
|
#define CIRCLEQ_EMPTY(head) ((head)->cqh_first == (void *)(head))
|
|
|
#define CIRCLEQ_FIRST(head) ((head)->cqh_first)
|
#define CIRCLEQ_FIRST(head) ((head)->cqh_first)
|
|
|
#define CIRCLEQ_FOREACH(var, head, field) \
|
#define CIRCLEQ_FOREACH(var, head, field) \
|
for((var) = (head)->cqh_first; \
|
for((var) = (head)->cqh_first; \
|
(var) != (void *)(head); \
|
(var) != (void *)(head); \
|
(var) = (var)->field.cqe_next)
|
(var) = (var)->field.cqe_next)
|
|
|
#define CIRCLEQ_FOREACH_REVERSE(var, head, field) \
|
#define CIRCLEQ_FOREACH_REVERSE(var, head, field) \
|
for((var) = (head)->cqh_last; \
|
for((var) = (head)->cqh_last; \
|
(var) != (void *)(head); \
|
(var) != (void *)(head); \
|
(var) = (var)->field.cqe_prev)
|
(var) = (var)->field.cqe_prev)
|
|
|
#define CIRCLEQ_INIT(head) do { \
|
#define CIRCLEQ_INIT(head) do { \
|
(head)->cqh_first = (void *)(head); \
|
(head)->cqh_first = (void *)(head); \
|
(head)->cqh_last = (void *)(head); \
|
(head)->cqh_last = (void *)(head); \
|
} while (0)
|
} while (0)
|
|
|
#define CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
#define CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
(elm)->field.cqe_next = (listelm)->field.cqe_next; \
|
(elm)->field.cqe_next = (listelm)->field.cqe_next; \
|
(elm)->field.cqe_prev = (listelm); \
|
(elm)->field.cqe_prev = (listelm); \
|
if ((listelm)->field.cqe_next == (void *)(head)) \
|
if ((listelm)->field.cqe_next == (void *)(head)) \
|
(head)->cqh_last = (elm); \
|
(head)->cqh_last = (elm); \
|
else \
|
else \
|
(listelm)->field.cqe_next->field.cqe_prev = (elm); \
|
(listelm)->field.cqe_next->field.cqe_prev = (elm); \
|
(listelm)->field.cqe_next = (elm); \
|
(listelm)->field.cqe_next = (elm); \
|
} while (0)
|
} while (0)
|
|
|
#define CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do { \
|
#define CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do { \
|
(elm)->field.cqe_next = (listelm); \
|
(elm)->field.cqe_next = (listelm); \
|
(elm)->field.cqe_prev = (listelm)->field.cqe_prev; \
|
(elm)->field.cqe_prev = (listelm)->field.cqe_prev; \
|
if ((listelm)->field.cqe_prev == (void *)(head)) \
|
if ((listelm)->field.cqe_prev == (void *)(head)) \
|
(head)->cqh_first = (elm); \
|
(head)->cqh_first = (elm); \
|
else \
|
else \
|
(listelm)->field.cqe_prev->field.cqe_next = (elm); \
|
(listelm)->field.cqe_prev->field.cqe_next = (elm); \
|
(listelm)->field.cqe_prev = (elm); \
|
(listelm)->field.cqe_prev = (elm); \
|
} while (0)
|
} while (0)
|
|
|
#define CIRCLEQ_INSERT_HEAD(head, elm, field) do { \
|
#define CIRCLEQ_INSERT_HEAD(head, elm, field) do { \
|
(elm)->field.cqe_next = (head)->cqh_first; \
|
(elm)->field.cqe_next = (head)->cqh_first; \
|
(elm)->field.cqe_prev = (void *)(head); \
|
(elm)->field.cqe_prev = (void *)(head); \
|
if ((head)->cqh_last == (void *)(head)) \
|
if ((head)->cqh_last == (void *)(head)) \
|
(head)->cqh_last = (elm); \
|
(head)->cqh_last = (elm); \
|
else \
|
else \
|
(head)->cqh_first->field.cqe_prev = (elm); \
|
(head)->cqh_first->field.cqe_prev = (elm); \
|
(head)->cqh_first = (elm); \
|
(head)->cqh_first = (elm); \
|
} while (0)
|
} while (0)
|
|
|
#define CIRCLEQ_INSERT_TAIL(head, elm, field) do { \
|
#define CIRCLEQ_INSERT_TAIL(head, elm, field) do { \
|
(elm)->field.cqe_next = (void *)(head); \
|
(elm)->field.cqe_next = (void *)(head); \
|
(elm)->field.cqe_prev = (head)->cqh_last; \
|
(elm)->field.cqe_prev = (head)->cqh_last; \
|
if ((head)->cqh_first == (void *)(head)) \
|
if ((head)->cqh_first == (void *)(head)) \
|
(head)->cqh_first = (elm); \
|
(head)->cqh_first = (elm); \
|
else \
|
else \
|
(head)->cqh_last->field.cqe_next = (elm); \
|
(head)->cqh_last->field.cqe_next = (elm); \
|
(head)->cqh_last = (elm); \
|
(head)->cqh_last = (elm); \
|
} while (0)
|
} while (0)
|
|
|
#define CIRCLEQ_LAST(head) ((head)->cqh_last)
|
#define CIRCLEQ_LAST(head) ((head)->cqh_last)
|
|
|
#define CIRCLEQ_NEXT(elm,field) ((elm)->field.cqe_next)
|
#define CIRCLEQ_NEXT(elm,field) ((elm)->field.cqe_next)
|
|
|
#define CIRCLEQ_PREV(elm,field) ((elm)->field.cqe_prev)
|
#define CIRCLEQ_PREV(elm,field) ((elm)->field.cqe_prev)
|
|
|
#define CIRCLEQ_REMOVE(head, elm, field) do { \
|
#define CIRCLEQ_REMOVE(head, elm, field) do { \
|
if ((elm)->field.cqe_next == (void *)(head)) \
|
if ((elm)->field.cqe_next == (void *)(head)) \
|
(head)->cqh_last = (elm)->field.cqe_prev; \
|
(head)->cqh_last = (elm)->field.cqe_prev; \
|
else \
|
else \
|
(elm)->field.cqe_next->field.cqe_prev = \
|
(elm)->field.cqe_next->field.cqe_prev = \
|
(elm)->field.cqe_prev; \
|
(elm)->field.cqe_prev; \
|
if ((elm)->field.cqe_prev == (void *)(head)) \
|
if ((elm)->field.cqe_prev == (void *)(head)) \
|
(head)->cqh_first = (elm)->field.cqe_next; \
|
(head)->cqh_first = (elm)->field.cqe_next; \
|
else \
|
else \
|
(elm)->field.cqe_prev->field.cqe_next = \
|
(elm)->field.cqe_prev->field.cqe_next = \
|
(elm)->field.cqe_next; \
|
(elm)->field.cqe_next; \
|
} while (0)
|
} while (0)
|
|
|
#ifdef _KERNEL
|
#ifdef _KERNEL
|
|
|
/*
|
/*
|
* XXX insque() and remque() are an old way of handling certain queues.
|
* XXX insque() and remque() are an old way of handling certain queues.
|
* They bogusly assumes that all queue heads look alike.
|
* They bogusly assumes that all queue heads look alike.
|
*/
|
*/
|
|
|
struct quehead {
|
struct quehead {
|
struct quehead *qh_link;
|
struct quehead *qh_link;
|
struct quehead *qh_rlink;
|
struct quehead *qh_rlink;
|
};
|
};
|
|
|
#ifdef __GNUC__
|
#ifdef __GNUC__
|
|
|
static __inline void
|
static __inline void
|
insque(void *a, void *b)
|
insque(void *a, void *b)
|
{
|
{
|
struct quehead *element = a, *head = b;
|
struct quehead *element = a, *head = b;
|
|
|
element->qh_link = head->qh_link;
|
element->qh_link = head->qh_link;
|
element->qh_rlink = head;
|
element->qh_rlink = head;
|
head->qh_link = element;
|
head->qh_link = element;
|
element->qh_link->qh_rlink = element;
|
element->qh_link->qh_rlink = element;
|
}
|
}
|
|
|
static __inline void
|
static __inline void
|
remque(void *a)
|
remque(void *a)
|
{
|
{
|
struct quehead *element = a;
|
struct quehead *element = a;
|
|
|
element->qh_link->qh_rlink = element->qh_rlink;
|
element->qh_link->qh_rlink = element->qh_rlink;
|
element->qh_rlink->qh_link = element->qh_link;
|
element->qh_rlink->qh_link = element->qh_link;
|
element->qh_rlink = 0;
|
element->qh_rlink = 0;
|
}
|
}
|
|
|
#else /* !__GNUC__ */
|
#else /* !__GNUC__ */
|
|
|
void insque __P((void *a, void *b));
|
void insque __P((void *a, void *b));
|
void remque __P((void *a));
|
void remque __P((void *a));
|
|
|
#endif /* __GNUC__ */
|
#endif /* __GNUC__ */
|
|
|
#endif /* _KERNEL */
|
#endif /* _KERNEL */
|
|
|
#endif /* !_SYS_QUEUE_H_ */
|
#endif /* !_SYS_QUEUE_H_ */
|
|
|
