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[BZ #2517]
2006-05-01 Ulrich Drepper <drepper@redhat.com> [BZ #2517] * misc/sys/queue.h: Update to more recent version.
This commit is contained in:
Ulrich Drepper
parent
c29b654981
commit
96c169f22e
@ -1,3 +1,8 @@
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2006-05-01 Ulrich Drepper <drepper@redhat.com>
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[BZ #2517]
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* misc/sys/queue.h: Update to more recent version.
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2006-05-01 Alexander Shopov <ash@contact.bg>
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[BZ #2625]
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441
misc/sys/queue.h
441
misc/sys/queue.h
@ -10,7 +10,7 @@
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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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* 4. Neither the name of the University nor the names of its contributors
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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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@ -26,29 +26,46 @@
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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 8.3 (Berkeley) 12/13/93
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* @(#)queue.h 8.5 (Berkeley) 8/20/94
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*/
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#ifndef _SYS_QUEUE_H
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#define _SYS_QUEUE_H 1
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#ifndef _SYS_QUEUE_H_
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#define _SYS_QUEUE_H_
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/*
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* This file defines three types of data structures: lists, tail queues,
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* and circular queues.
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* This file defines five types of data structures: singly-linked lists,
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* lists, simple queues, tail queues, and circular queues.
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*
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* A singly-linked list is headed by a single forward pointer. The
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* elements are singly linked for minimum space and pointer manipulation
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* overhead at the expense of O(n) removal for arbitrary elements. New
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* elements can be added to the list after an existing element or at the
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* head of the list. Elements being removed from the head of the list
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* should use the explicit macro for this purpose for optimum
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* efficiency. A singly-linked list may only be traversed in the forward
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* direction. Singly-linked lists are ideal for applications with large
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* datasets and few or no removals or for implementing a LIFO queue.
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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 after
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* an existing element or at the head of the list. A list may only be
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* traversed in the forward direction.
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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 simple queue is headed by a pair of pointers, one the head of the
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* list and the other to the tail of the list. The elements are singly
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* linked to save space, so elements can only be removed from the
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* head of the list. New elements can be added to the list after
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* an existing element, at the head of the list, or at the end of the
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* list. A simple queue 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 after
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* an existing element, at the head of the list, or at the end of the
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* list. A tail queue may only be traversed in the forward direction.
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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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@ -64,12 +81,15 @@
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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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#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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#define LIST_ENTRY(type) \
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#define LIST_HEAD_INITIALIZER(head) \
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{ NULL }
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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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@ -78,73 +98,315 @@ struct { \
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/*
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* List functions.
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*/
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#define LIST_INIT(head) { \
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#define LIST_INIT(head) do { \
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(head)->lh_first = NULL; \
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}
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} while (/*CONSTCOND*/0)
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#define LIST_INSERT_AFTER(listelm, elm, field) { \
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#define LIST_INSERT_AFTER(listelm, elm, field) do { \
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QUEUEDEBUG_LIST_OP((listelm), field) \
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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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}
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} while (/*CONSTCOND*/0)
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#define LIST_INSERT_HEAD(head, elm, field) { \
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#define LIST_INSERT_BEFORE(listelm, elm, field) do { \
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QUEUEDEBUG_LIST_OP((listelm), field) \
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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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#define LIST_INSERT_HEAD(head, elm, field) do { \
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QUEUEDEBUG_LIST_INSERT_HEAD((head), (elm), field) \
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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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}
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} while (/*CONSTCOND*/0)
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#define LIST_REMOVE(elm, field) { \
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#define LIST_REMOVE(elm, field) do { \
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QUEUEDEBUG_LIST_OP((elm), field) \
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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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QUEUEDEBUG_LIST_POSTREMOVE((elm), field) \
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} while (/*CONSTCOND*/0)
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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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* 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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* Singly-linked List definitions.
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*/
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#define SLIST_HEAD(name, type) \
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struct name { \
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struct type *slh_first; /* first element */ \
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}
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#define SLIST_HEAD_INITIALIZER(head) \
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{ NULL }
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#define SLIST_ENTRY(type) \
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struct { \
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struct type *sle_next; /* next element */ \
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}
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/*
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* Singly-linked List functions.
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*/
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#define SLIST_INIT(head) do { \
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(head)->slh_first = NULL; \
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} while (/*CONSTCOND*/0)
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#define SLIST_INSERT_AFTER(slistelm, elm, field) do { \
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(elm)->field.sle_next = (slistelm)->field.sle_next; \
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(slistelm)->field.sle_next = (elm); \
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} while (/*CONSTCOND*/0)
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#define SLIST_INSERT_HEAD(head, elm, field) do { \
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(elm)->field.sle_next = (head)->slh_first; \
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(head)->slh_first = (elm); \
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} while (/*CONSTCOND*/0)
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#define SLIST_REMOVE_HEAD(head, field) do { \
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(head)->slh_first = (head)->slh_first->field.sle_next; \
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} while (/*CONSTCOND*/0)
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#define SLIST_REMOVE(head, elm, type, field) do { \
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if ((head)->slh_first == (elm)) { \
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SLIST_REMOVE_HEAD((head), field); \
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} \
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else { \
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struct type *curelm = (head)->slh_first; \
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while(curelm->field.sle_next != (elm)) \
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curelm = curelm->field.sle_next; \
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curelm->field.sle_next = \
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curelm->field.sle_next->field.sle_next; \
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} \
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} while (/*CONSTCOND*/0)
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#define SLIST_FOREACH(var, head, field) \
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for((var) = (head)->slh_first; (var); (var) = (var)->field.sle_next)
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/*
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* Singly-linked List access methods.
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*/
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#define SLIST_EMPTY(head) ((head)->slh_first == NULL)
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#define SLIST_FIRST(head) ((head)->slh_first)
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#define SLIST_NEXT(elm, field) ((elm)->field.sle_next)
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/*
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* Singly-linked Tail queue declarations.
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*/
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#define STAILQ_HEAD(name, type) \
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struct name { \
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struct type *stqh_first; /* first element */ \
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struct type **stqh_last; /* addr of last next element */ \
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}
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#define STAILQ_HEAD_INITIALIZER(head) \
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{ NULL, &(head).stqh_first }
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#define STAILQ_ENTRY(type) \
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struct { \
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struct type *stqe_next; /* next element */ \
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}
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/*
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* Singly-linked Tail queue functions.
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*/
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#define STAILQ_INIT(head) do { \
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(head)->stqh_first = NULL; \
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(head)->stqh_last = &(head)->stqh_first; \
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} while (/*CONSTCOND*/0)
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#define STAILQ_INSERT_HEAD(head, elm, field) do { \
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if (((elm)->field.stqe_next = (head)->stqh_first) == NULL) \
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(head)->stqh_last = &(elm)->field.stqe_next; \
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(head)->stqh_first = (elm); \
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} while (/*CONSTCOND*/0)
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#define STAILQ_INSERT_TAIL(head, elm, field) do { \
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(elm)->field.stqe_next = NULL; \
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*(head)->stqh_last = (elm); \
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(head)->stqh_last = &(elm)->field.stqe_next; \
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} while (/*CONSTCOND*/0)
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#define STAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
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if (((elm)->field.stqe_next = (listelm)->field.stqe_next) == NULL)\
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(head)->stqh_last = &(elm)->field.stqe_next; \
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(listelm)->field.stqe_next = (elm); \
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} while (/*CONSTCOND*/0)
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#define STAILQ_REMOVE_HEAD(head, field) do { \
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if (((head)->stqh_first = (head)->stqh_first->field.stqe_next) == NULL) \
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(head)->stqh_last = &(head)->stqh_first; \
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} while (/*CONSTCOND*/0)
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#define STAILQ_REMOVE(head, elm, type, field) do { \
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if ((head)->stqh_first == (elm)) { \
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STAILQ_REMOVE_HEAD((head), field); \
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} else { \
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struct type *curelm = (head)->stqh_first; \
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while (curelm->field.stqe_next != (elm)) \
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curelm = curelm->field.stqe_next; \
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if ((curelm->field.stqe_next = \
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curelm->field.stqe_next->field.stqe_next) == NULL) \
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(head)->stqh_last = &(curelm)->field.stqe_next; \
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} \
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} while (/*CONSTCOND*/0)
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#define STAILQ_FOREACH(var, head, field) \
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for ((var) = ((head)->stqh_first); \
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(var); \
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(var) = ((var)->field.stqe_next))
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/*
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* Singly-linked Tail queue access methods.
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*/
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#define STAILQ_EMPTY(head) ((head)->stqh_first == NULL)
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#define STAILQ_FIRST(head) ((head)->stqh_first)
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#define STAILQ_NEXT(elm, field) ((elm)->field.stqe_next)
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/*
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* Simple queue definitions.
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*/
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#define SIMPLEQ_HEAD(name, type) \
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struct name { \
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struct type *sqh_first; /* first element */ \
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struct type **sqh_last; /* addr of last next element */ \
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}
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#define SIMPLEQ_HEAD_INITIALIZER(head) \
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{ NULL, &(head).sqh_first }
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#define SIMPLEQ_ENTRY(type) \
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struct { \
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struct type *sqe_next; /* next element */ \
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}
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/*
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* Simple queue functions.
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*/
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#define SIMPLEQ_INIT(head) do { \
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(head)->sqh_first = NULL; \
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(head)->sqh_last = &(head)->sqh_first; \
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} while (/*CONSTCOND*/0)
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#define SIMPLEQ_INSERT_HEAD(head, elm, field) do { \
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if (((elm)->field.sqe_next = (head)->sqh_first) == NULL) \
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(head)->sqh_last = &(elm)->field.sqe_next; \
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(head)->sqh_first = (elm); \
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} while (/*CONSTCOND*/0)
|
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|
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#define SIMPLEQ_INSERT_TAIL(head, elm, field) do { \
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(elm)->field.sqe_next = NULL; \
|
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*(head)->sqh_last = (elm); \
|
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(head)->sqh_last = &(elm)->field.sqe_next; \
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} while (/*CONSTCOND*/0)
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|
||||
#define SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
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if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\
|
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(head)->sqh_last = &(elm)->field.sqe_next; \
|
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(listelm)->field.sqe_next = (elm); \
|
||||
} while (/*CONSTCOND*/0)
|
||||
|
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#define SIMPLEQ_REMOVE_HEAD(head, field) do { \
|
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if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \
|
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(head)->sqh_last = &(head)->sqh_first; \
|
||||
} while (/*CONSTCOND*/0)
|
||||
|
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#define SIMPLEQ_REMOVE(head, elm, type, field) do { \
|
||||
if ((head)->sqh_first == (elm)) { \
|
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SIMPLEQ_REMOVE_HEAD((head), field); \
|
||||
} else { \
|
||||
struct type *curelm = (head)->sqh_first; \
|
||||
while (curelm->field.sqe_next != (elm)) \
|
||||
curelm = curelm->field.sqe_next; \
|
||||
if ((curelm->field.sqe_next = \
|
||||
curelm->field.sqe_next->field.sqe_next) == NULL) \
|
||||
(head)->sqh_last = &(curelm)->field.sqe_next; \
|
||||
} \
|
||||
} while (/*CONSTCOND*/0)
|
||||
|
||||
#define SIMPLEQ_FOREACH(var, head, field) \
|
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for ((var) = ((head)->sqh_first); \
|
||||
(var); \
|
||||
(var) = ((var)->field.sqe_next))
|
||||
|
||||
/*
|
||||
* Simple queue access methods.
|
||||
*/
|
||||
#define SIMPLEQ_EMPTY(head) ((head)->sqh_first == NULL)
|
||||
#define SIMPLEQ_FIRST(head) ((head)->sqh_first)
|
||||
#define SIMPLEQ_NEXT(elm, field) ((elm)->field.sqe_next)
|
||||
|
||||
|
||||
/*
|
||||
* Tail queue definitions.
|
||||
*/
|
||||
#define TAILQ_HEAD(name, type) \
|
||||
#define _TAILQ_HEAD(name, type, qual) \
|
||||
struct name { \
|
||||
struct type *tqh_first; /* first element */ \
|
||||
struct type **tqh_last; /* addr of last next element */ \
|
||||
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,)
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||||
|
||||
#define TAILQ_ENTRY(type) \
|
||||
#define TAILQ_HEAD_INITIALIZER(head) \
|
||||
{ NULL, &(head).tqh_first }
|
||||
|
||||
#define _TAILQ_ENTRY(type, qual) \
|
||||
struct { \
|
||||
struct type *tqe_next; /* next element */ \
|
||||
struct type **tqe_prev; /* address of previous next element */ \
|
||||
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) { \
|
||||
#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) { \
|
||||
#define TAILQ_INSERT_HEAD(head, elm, field) do { \
|
||||
QUEUEDEBUG_TAILQ_INSERT_HEAD((head), (elm), field) \
|
||||
if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \
|
||||
(elm)->field.tqe_next->field.tqe_prev = \
|
||||
(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) { \
|
||||
#define TAILQ_INSERT_TAIL(head, elm, field) do { \
|
||||
QUEUEDEBUG_TAILQ_INSERT_TAIL((head), (elm), field) \
|
||||
(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) { \
|
||||
#define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
||||
QUEUEDEBUG_TAILQ_OP((listelm), field) \
|
||||
if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
|
||||
(elm)->field.tqe_next->field.tqe_prev = \
|
||||
&(elm)->field.tqe_next; \
|
||||
@ -152,27 +414,64 @@ struct { \
|
||||
(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_REMOVE(head, elm, field) { \
|
||||
#define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
|
||||
QUEUEDEBUG_TAILQ_OP((listelm), field) \
|
||||
(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 { \
|
||||
QUEUEDEBUG_TAILQ_PREREMOVE((head), (elm), field) \
|
||||
QUEUEDEBUG_TAILQ_OP((elm), field) \
|
||||
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; \
|
||||
}
|
||||
QUEUEDEBUG_TAILQ_POSTREMOVE((elm), field); \
|
||||
} while (/*CONSTCOND*/0)
|
||||
|
||||
#define TAILQ_FOREACH(var, head, field) \
|
||||
for ((var) = ((head)->tqh_first); \
|
||||
(var); \
|
||||
(var) = ((var)->field.tqe_next))
|
||||
|
||||
#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) \
|
||||
#define CIRCLEQ_HEAD(name, type) \
|
||||
struct name { \
|
||||
struct type *cqh_first; /* first element */ \
|
||||
struct type *cqh_last; /* last element */ \
|
||||
}
|
||||
|
||||
#define CIRCLEQ_ENTRY(type) \
|
||||
#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 */ \
|
||||
@ -181,12 +480,14 @@ struct { \
|
||||
/*
|
||||
* Circular queue functions.
|
||||
*/
|
||||
#define CIRCLEQ_INIT(head) { \
|
||||
#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) { \
|
||||
#define CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
||||
QUEUEDEBUG_CIRCLEQ_HEAD((head), field) \
|
||||
QUEUEDEBUG_CIRCLEQ_ELM((head), (listelm), field) \
|
||||
(elm)->field.cqe_next = (listelm)->field.cqe_next; \
|
||||
(elm)->field.cqe_prev = (listelm); \
|
||||
if ((listelm)->field.cqe_next == (void *)(head)) \
|
||||
@ -194,9 +495,11 @@ struct { \
|
||||
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) { \
|
||||
#define CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do { \
|
||||
QUEUEDEBUG_CIRCLEQ_HEAD((head), field) \
|
||||
QUEUEDEBUG_CIRCLEQ_ELM((head), (listelm), field) \
|
||||
(elm)->field.cqe_next = (listelm); \
|
||||
(elm)->field.cqe_prev = (listelm)->field.cqe_prev; \
|
||||
if ((listelm)->field.cqe_prev == (void *)(head)) \
|
||||
@ -204,9 +507,10 @@ struct { \
|
||||
else \
|
||||
(listelm)->field.cqe_prev->field.cqe_next = (elm); \
|
||||
(listelm)->field.cqe_prev = (elm); \
|
||||
}
|
||||
} while (/*CONSTCOND*/0)
|
||||
|
||||
#define CIRCLEQ_INSERT_HEAD(head, elm, field) { \
|
||||
#define CIRCLEQ_INSERT_HEAD(head, elm, field) do { \
|
||||
QUEUEDEBUG_CIRCLEQ_HEAD((head), field) \
|
||||
(elm)->field.cqe_next = (head)->cqh_first; \
|
||||
(elm)->field.cqe_prev = (void *)(head); \
|
||||
if ((head)->cqh_last == (void *)(head)) \
|
||||
@ -214,9 +518,10 @@ struct { \
|
||||
else \
|
||||
(head)->cqh_first->field.cqe_prev = (elm); \
|
||||
(head)->cqh_first = (elm); \
|
||||
}
|
||||
} while (/*CONSTCOND*/0)
|
||||
|
||||
#define CIRCLEQ_INSERT_TAIL(head, elm, field) { \
|
||||
#define CIRCLEQ_INSERT_TAIL(head, elm, field) do { \
|
||||
QUEUEDEBUG_CIRCLEQ_HEAD((head), field) \
|
||||
(elm)->field.cqe_next = (void *)(head); \
|
||||
(elm)->field.cqe_prev = (head)->cqh_last; \
|
||||
if ((head)->cqh_first == (void *)(head)) \
|
||||
@ -224,9 +529,11 @@ struct { \
|
||||
else \
|
||||
(head)->cqh_last->field.cqe_next = (elm); \
|
||||
(head)->cqh_last = (elm); \
|
||||
}
|
||||
} while (/*CONSTCOND*/0)
|
||||
|
||||
#define CIRCLEQ_REMOVE(head, elm, field) { \
|
||||
#define CIRCLEQ_REMOVE(head, elm, field) do { \
|
||||
QUEUEDEBUG_CIRCLEQ_HEAD((head), field) \
|
||||
QUEUEDEBUG_CIRCLEQ_ELM((head), (elm), field) \
|
||||
if ((elm)->field.cqe_next == (void *)(head)) \
|
||||
(head)->cqh_last = (elm)->field.cqe_prev; \
|
||||
else \
|
||||
@ -237,5 +544,35 @@ struct { \
|
||||
else \
|
||||
(elm)->field.cqe_prev->field.cqe_next = \
|
||||
(elm)->field.cqe_next; \
|
||||
}
|
||||
QUEUEDEBUG_CIRCLEQ_POSTREMOVE((elm), field) \
|
||||
} 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 */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user