* @(#)queue.h 8.5 (Berkeley) 8/20/94
*/
-#ifndef _SYS_QUEUE_H_
+#ifndef _SYS_QUEUE_H_
#define _SYS_QUEUE_H_
/*
/*
* Singly-linked List definitions.
*/
-#define SLIST_HEAD(name, type) \
-struct name { \
- struct type *slh_first; /* first element */ \
-}
+#define SLIST_HEAD(name, type) \
+ struct name { \
+ struct type *slh_first; /* first element */ \
+ }
-#define SLIST_HEAD_INITIALIZER(head) \
- { NULL }
+#define SLIST_HEAD_INITIALIZER(head) \
+ { \
+ NULL \
+ }
-#define SLIST_ENTRY(type) \
-struct { \
- struct type *sle_next; /* next element */ \
-}
+#define SLIST_ENTRY(type) \
+ struct { \
+ struct type *sle_next; /* next element */ \
+ }
/*
* Singly-linked List access methods.
#define SLIST_EMPTY(head) (SLIST_FIRST(head) == SLIST_END(head))
#define SLIST_NEXT(elm, field) ((elm)->field.sle_next)
-#define SLIST_FOREACH(var, head, field) \
- for((var) = SLIST_FIRST(head); \
- (var) != SLIST_END(head); \
- (var) = SLIST_NEXT(var, field))
+#define SLIST_FOREACH(var, head, field) \
+ for ((var) = SLIST_FIRST(head); (var) != SLIST_END(head); \
+ (var) = SLIST_NEXT(var, field))
-#define SLIST_FOREACH_SAFE(var, head, field, tvar) \
- for ((var) = SLIST_FIRST(head); \
- (var) && ((tvar) = SLIST_NEXT(var, field), 1); \
- (var) = (tvar))
+#define SLIST_FOREACH_SAFE(var, head, field, tvar) \
+ for ((var) = SLIST_FIRST(head); \
+ (var) && ((tvar) = SLIST_NEXT(var, field), 1); (var) = (tvar))
/*
* Singly-linked List functions.
*/
-#define SLIST_INIT(head) { \
- SLIST_FIRST(head) = SLIST_END(head); \
-}
-
-#define SLIST_INSERT_AFTER(slistelm, elm, field) do { \
- (elm)->field.sle_next = (slistelm)->field.sle_next; \
- (slistelm)->field.sle_next = (elm); \
-} while (0)
-
-#define SLIST_INSERT_HEAD(head, elm, field) do { \
- (elm)->field.sle_next = (head)->slh_first; \
- (head)->slh_first = (elm); \
-} while (0)
-
-#define SLIST_REMOVE_AFTER(elm, field) do { \
- (elm)->field.sle_next = (elm)->field.sle_next->field.sle_next; \
-} while (0)
-
-#define SLIST_REMOVE_HEAD(head, field) do { \
- (head)->slh_first = (head)->slh_first->field.sle_next; \
-} while (0)
-
-#define SLIST_REMOVE(head, elm, type, field) do { \
- if ((head)->slh_first == (elm)) { \
- SLIST_REMOVE_HEAD((head), field); \
- } else { \
- struct type *curelm = (head)->slh_first; \
- \
- while (curelm->field.sle_next != (elm)) \
- curelm = curelm->field.sle_next; \
- curelm->field.sle_next = \
- curelm->field.sle_next->field.sle_next; \
- } \
- _Q_INVALIDATE((elm)->field.sle_next); \
-} while (0)
+#define SLIST_INIT(head) \
+ { \
+ SLIST_FIRST(head) = SLIST_END(head); \
+ }
+
+#define SLIST_INSERT_AFTER(slistelm, elm, field) \
+ do { \
+ (elm)->field.sle_next = (slistelm)->field.sle_next; \
+ (slistelm)->field.sle_next = (elm); \
+ } while (0)
+
+#define SLIST_INSERT_HEAD(head, elm, field) \
+ do { \
+ (elm)->field.sle_next = (head)->slh_first; \
+ (head)->slh_first = (elm); \
+ } while (0)
+
+#define SLIST_REMOVE_AFTER(elm, field) \
+ do { \
+ (elm)->field.sle_next = (elm)->field.sle_next->field.sle_next; \
+ } while (0)
+
+#define SLIST_REMOVE_HEAD(head, field) \
+ do { \
+ (head)->slh_first = (head)->slh_first->field.sle_next; \
+ } while (0)
+
+#define SLIST_REMOVE(head, elm, type, field) \
+ do { \
+ if ((head)->slh_first == (elm)) { \
+ SLIST_REMOVE_HEAD((head), field); \
+ } else { \
+ struct type *curelm = (head)->slh_first; \
+ \
+ while (curelm->field.sle_next != (elm)) \
+ curelm = curelm->field.sle_next; \
+ curelm->field.sle_next = \
+ curelm->field.sle_next->field.sle_next; \
+ } \
+ _Q_INVALIDATE((elm)->field.sle_next); \
+ } while (0)
/*
* 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 */ \
-}
+#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 access methods.
#define LIST_EMPTY(head) (LIST_FIRST(head) == LIST_END(head))
#define LIST_NEXT(elm, field) ((elm)->field.le_next)
-#define LIST_FOREACH(var, head, field) \
- for((var) = LIST_FIRST(head); \
- (var)!= LIST_END(head); \
- (var) = LIST_NEXT(var, field))
+#define LIST_FOREACH(var, head, field) \
+ for ((var) = LIST_FIRST(head); (var) != LIST_END(head); \
+ (var) = LIST_NEXT(var, field))
-#define LIST_FOREACH_SAFE(var, head, field, tvar) \
- for ((var) = LIST_FIRST(head); \
- (var) && ((tvar) = LIST_NEXT(var, field), 1); \
- (var) = (tvar))
+#define LIST_FOREACH_SAFE(var, head, field, tvar) \
+ for ((var) = LIST_FIRST(head); \
+ (var) && ((tvar) = LIST_NEXT(var, field), 1); (var) = (tvar))
/*
* List functions.
*/
-#define LIST_INIT(head) do { \
- LIST_FIRST(head) = LIST_END(head); \
-} while (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 (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 (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 (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; \
- _Q_INVALIDATE((elm)->field.le_prev); \
- _Q_INVALIDATE((elm)->field.le_next); \
-} while (0)
-
-#define LIST_REPLACE(elm, elm2, field) do { \
- if (((elm2)->field.le_next = (elm)->field.le_next) != NULL) \
- (elm2)->field.le_next->field.le_prev = \
- &(elm2)->field.le_next; \
- (elm2)->field.le_prev = (elm)->field.le_prev; \
- *(elm2)->field.le_prev = (elm2); \
- _Q_INVALIDATE((elm)->field.le_prev); \
- _Q_INVALIDATE((elm)->field.le_next); \
-} while (0)
+#define LIST_INIT(head) \
+ do { \
+ LIST_FIRST(head) = LIST_END(head); \
+ } while (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 (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 (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 (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; \
+ _Q_INVALIDATE((elm)->field.le_prev); \
+ _Q_INVALIDATE((elm)->field.le_next); \
+ } while (0)
+
+#define LIST_REPLACE(elm, elm2, field) \
+ do { \
+ if (((elm2)->field.le_next = (elm)->field.le_next) != NULL) \
+ (elm2)->field.le_next->field.le_prev = \
+ &(elm2)->field.le_next; \
+ (elm2)->field.le_prev = (elm)->field.le_prev; \
+ *(elm2)->field.le_prev = (elm2); \
+ _Q_INVALIDATE((elm)->field.le_prev); \
+ _Q_INVALIDATE((elm)->field.le_next); \
+ } while (0)
/*
* Simple queue definitions.
*/
-#define SIMPLEQ_HEAD(name, type) \
-struct name { \
- struct type *sqh_first; /* first element */ \
- struct type **sqh_last; /* addr of last next element */ \
-}
-
-#define SIMPLEQ_HEAD_INITIALIZER(head) \
- { NULL, &(head).sqh_first }
-
-#define SIMPLEQ_ENTRY(type) \
-struct { \
- struct type *sqe_next; /* next element */ \
-}
+#define SIMPLEQ_HEAD(name, type) \
+ struct name { \
+ struct type *sqh_first; /* first element */ \
+ struct type **sqh_last; /* addr of last next element */ \
+ }
+
+#define SIMPLEQ_HEAD_INITIALIZER(head) \
+ { \
+ NULL, &(head).sqh_first \
+ }
+
+#define SIMPLEQ_ENTRY(type) \
+ struct { \
+ struct type *sqe_next; /* next element */ \
+ }
/*
* Simple queue access methods.
#define SIMPLEQ_EMPTY(head) (SIMPLEQ_FIRST(head) == SIMPLEQ_END(head))
#define SIMPLEQ_NEXT(elm, field) ((elm)->field.sqe_next)
-#define SIMPLEQ_FOREACH(var, head, field) \
- for((var) = SIMPLEQ_FIRST(head); \
- (var) != SIMPLEQ_END(head); \
- (var) = SIMPLEQ_NEXT(var, field))
+#define SIMPLEQ_FOREACH(var, head, field) \
+ for ((var) = SIMPLEQ_FIRST(head); (var) != SIMPLEQ_END(head); \
+ (var) = SIMPLEQ_NEXT(var, field))
-#define SIMPLEQ_FOREACH_SAFE(var, head, field, tvar) \
- for ((var) = SIMPLEQ_FIRST(head); \
- (var) && ((tvar) = SIMPLEQ_NEXT(var, field), 1); \
- (var) = (tvar))
+#define SIMPLEQ_FOREACH_SAFE(var, head, field, tvar) \
+ for ((var) = SIMPLEQ_FIRST(head); \
+ (var) && ((tvar) = SIMPLEQ_NEXT(var, field), 1); (var) = (tvar))
/*
* Simple queue functions.
*/
-#define SIMPLEQ_INIT(head) do { \
- (head)->sqh_first = NULL; \
- (head)->sqh_last = &(head)->sqh_first; \
-} while (0)
-
-#define SIMPLEQ_INSERT_HEAD(head, elm, field) do { \
- if (((elm)->field.sqe_next = (head)->sqh_first) == NULL) \
- (head)->sqh_last = &(elm)->field.sqe_next; \
- (head)->sqh_first = (elm); \
-} while (0)
-
-#define SIMPLEQ_INSERT_TAIL(head, elm, field) do { \
- (elm)->field.sqe_next = NULL; \
- *(head)->sqh_last = (elm); \
- (head)->sqh_last = &(elm)->field.sqe_next; \
-} while (0)
-
-#define SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
- if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\
- (head)->sqh_last = &(elm)->field.sqe_next; \
- (listelm)->field.sqe_next = (elm); \
-} while (0)
-
-#define SIMPLEQ_REMOVE_HEAD(head, field) do { \
- if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \
- (head)->sqh_last = &(head)->sqh_first; \
-} while (0)
-
-#define SIMPLEQ_REMOVE_AFTER(head, elm, field) do { \
- if (((elm)->field.sqe_next = (elm)->field.sqe_next->field.sqe_next) \
- == NULL) \
- (head)->sqh_last = &(elm)->field.sqe_next; \
-} while (0)
-
-#define SIMPLEQ_CONCAT(head1, head2) do { \
- if (!SIMPLEQ_EMPTY((head2))) { \
- *(head1)->sqh_last = (head2)->sqh_first; \
- (head1)->sqh_last = (head2)->sqh_last; \
- SIMPLEQ_INIT((head2)); \
- } \
-} while (0)
+#define SIMPLEQ_INIT(head) \
+ do { \
+ (head)->sqh_first = NULL; \
+ (head)->sqh_last = &(head)->sqh_first; \
+ } while (0)
+
+#define SIMPLEQ_INSERT_HEAD(head, elm, field) \
+ do { \
+ if (((elm)->field.sqe_next = (head)->sqh_first) == NULL) \
+ (head)->sqh_last = &(elm)->field.sqe_next; \
+ (head)->sqh_first = (elm); \
+ } while (0)
+
+#define SIMPLEQ_INSERT_TAIL(head, elm, field) \
+ do { \
+ (elm)->field.sqe_next = NULL; \
+ *(head)->sqh_last = (elm); \
+ (head)->sqh_last = &(elm)->field.sqe_next; \
+ } while (0)
+
+#define SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) \
+ do { \
+ if (((elm)->field.sqe_next = (listelm)->field.sqe_next) \
+ == NULL) \
+ (head)->sqh_last = &(elm)->field.sqe_next; \
+ (listelm)->field.sqe_next = (elm); \
+ } while (0)
+
+#define SIMPLEQ_REMOVE_HEAD(head, field) \
+ do { \
+ if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) \
+ == NULL) \
+ (head)->sqh_last = &(head)->sqh_first; \
+ } while (0)
+
+#define SIMPLEQ_REMOVE_AFTER(head, elm, field) \
+ do { \
+ if (((elm)->field.sqe_next = \
+ (elm)->field.sqe_next->field.sqe_next) \
+ == NULL) \
+ (head)->sqh_last = &(elm)->field.sqe_next; \
+ } while (0)
+
+#define SIMPLEQ_CONCAT(head1, head2) \
+ do { \
+ if (!SIMPLEQ_EMPTY((head2))) { \
+ *(head1)->sqh_last = (head2)->sqh_first; \
+ (head1)->sqh_last = (head2)->sqh_last; \
+ SIMPLEQ_INIT((head2)); \
+ } \
+ } while (0)
/*
* XOR Simple queue definitions.
*/
-#define XSIMPLEQ_HEAD(name, type) \
-struct name { \
- struct type *sqx_first; /* first element */ \
- struct type **sqx_last; /* addr of last next element */ \
- unsigned long sqx_cookie; \
-}
-
-#define XSIMPLEQ_ENTRY(type) \
-struct { \
- struct type *sqx_next; /* next element */ \
-}
+#define XSIMPLEQ_HEAD(name, type) \
+ struct name { \
+ struct type *sqx_first; /* first element */ \
+ struct type **sqx_last; /* addr of last next element */ \
+ unsigned long sqx_cookie; \
+ }
+
+#define XSIMPLEQ_ENTRY(type) \
+ struct { \
+ struct type *sqx_next; /* next element */ \
+ }
/*
* XOR Simple queue access methods.
*/
-#define XSIMPLEQ_XOR(head, ptr) ((__typeof(ptr))((head)->sqx_cookie ^ \
- (unsigned long)(ptr)))
+#define XSIMPLEQ_XOR(head, ptr) \
+ ((__typeof(ptr))((head)->sqx_cookie ^ (unsigned long)(ptr)))
#define XSIMPLEQ_FIRST(head) XSIMPLEQ_XOR(head, ((head)->sqx_first))
#define XSIMPLEQ_END(head) NULL
#define XSIMPLEQ_EMPTY(head) (XSIMPLEQ_FIRST(head) == XSIMPLEQ_END(head))
#define XSIMPLEQ_NEXT(head, elm, field) XSIMPLEQ_XOR(head, ((elm)->field.sqx_next))
+#define XSIMPLEQ_FOREACH(var, head, field) \
+ for ((var) = XSIMPLEQ_FIRST(head); (var) != XSIMPLEQ_END(head); \
+ (var) = XSIMPLEQ_NEXT(head, var, field))
-#define XSIMPLEQ_FOREACH(var, head, field) \
- for ((var) = XSIMPLEQ_FIRST(head); \
- (var) != XSIMPLEQ_END(head); \
- (var) = XSIMPLEQ_NEXT(head, var, field))
-
-#define XSIMPLEQ_FOREACH_SAFE(var, head, field, tvar) \
- for ((var) = XSIMPLEQ_FIRST(head); \
- (var) && ((tvar) = XSIMPLEQ_NEXT(head, var, field), 1); \
- (var) = (tvar))
+#define XSIMPLEQ_FOREACH_SAFE(var, head, field, tvar) \
+ for ((var) = XSIMPLEQ_FIRST(head); \
+ (var) && ((tvar) = XSIMPLEQ_NEXT(head, var, field), 1); \
+ (var) = (tvar))
/*
* XOR Simple queue functions.
*/
-#define XSIMPLEQ_INIT(head) do { \
- arc4random_buf(&(head)->sqx_cookie, sizeof((head)->sqx_cookie)); \
- (head)->sqx_first = XSIMPLEQ_XOR(head, NULL); \
- (head)->sqx_last = XSIMPLEQ_XOR(head, &(head)->sqx_first); \
-} while (0)
-
-#define XSIMPLEQ_INSERT_HEAD(head, elm, field) do { \
- if (((elm)->field.sqx_next = (head)->sqx_first) == \
- XSIMPLEQ_XOR(head, NULL)) \
+#define XSIMPLEQ_INIT(head) \
+ do { \
+ arc4random_buf(&(head)->sqx_cookie, \
+ sizeof((head)->sqx_cookie)); \
+ (head)->sqx_first = XSIMPLEQ_XOR(head, NULL); \
+ (head)->sqx_last = XSIMPLEQ_XOR(head, &(head)->sqx_first); \
+ } while (0)
+
+#define XSIMPLEQ_INSERT_HEAD(head, elm, field) \
+ do { \
+ if (((elm)->field.sqx_next = (head)->sqx_first) \
+ == XSIMPLEQ_XOR(head, NULL)) \
+ (head)->sqx_last = \
+ XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
+ (head)->sqx_first = XSIMPLEQ_XOR(head, (elm)); \
+ } while (0)
+
+#define XSIMPLEQ_INSERT_TAIL(head, elm, field) \
+ do { \
+ (elm)->field.sqx_next = XSIMPLEQ_XOR(head, NULL); \
+ *(XSIMPLEQ_XOR(head, (head)->sqx_last)) = \
+ XSIMPLEQ_XOR(head, (elm)); \
(head)->sqx_last = XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
- (head)->sqx_first = XSIMPLEQ_XOR(head, (elm)); \
-} while (0)
-
-#define XSIMPLEQ_INSERT_TAIL(head, elm, field) do { \
- (elm)->field.sqx_next = XSIMPLEQ_XOR(head, NULL); \
- *(XSIMPLEQ_XOR(head, (head)->sqx_last)) = XSIMPLEQ_XOR(head, (elm)); \
- (head)->sqx_last = XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
-} while (0)
-
-#define XSIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
- if (((elm)->field.sqx_next = (listelm)->field.sqx_next) == \
- XSIMPLEQ_XOR(head, NULL)) \
- (head)->sqx_last = XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
- (listelm)->field.sqx_next = XSIMPLEQ_XOR(head, (elm)); \
-} while (0)
-
-#define XSIMPLEQ_REMOVE_HEAD(head, field) do { \
- if (((head)->sqx_first = XSIMPLEQ_XOR(head, \
- (head)->sqx_first)->field.sqx_next) == XSIMPLEQ_XOR(head, NULL)) \
- (head)->sqx_last = XSIMPLEQ_XOR(head, &(head)->sqx_first); \
-} while (0)
-
-#define XSIMPLEQ_REMOVE_AFTER(head, elm, field) do { \
- if (((elm)->field.sqx_next = XSIMPLEQ_XOR(head, \
- (elm)->field.sqx_next)->field.sqx_next) \
- == XSIMPLEQ_XOR(head, NULL)) \
- (head)->sqx_last = \
- XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
-} while (0)
+ } while (0)
+
+#define XSIMPLEQ_INSERT_AFTER(head, listelm, elm, field) \
+ do { \
+ if (((elm)->field.sqx_next = (listelm)->field.sqx_next) \
+ == XSIMPLEQ_XOR(head, NULL)) \
+ (head)->sqx_last = \
+ XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
+ (listelm)->field.sqx_next = XSIMPLEQ_XOR(head, (elm)); \
+ } while (0)
+
+#define XSIMPLEQ_REMOVE_HEAD(head, field) \
+ do { \
+ if (((head)->sqx_first = XSIMPLEQ_XOR(head, (head)->sqx_first) \
+ ->field.sqx_next) \
+ == XSIMPLEQ_XOR(head, NULL)) \
+ (head)->sqx_last = \
+ XSIMPLEQ_XOR(head, &(head)->sqx_first); \
+ } while (0)
+
+#define XSIMPLEQ_REMOVE_AFTER(head, elm, field) \
+ do { \
+ if (((elm)->field.sqx_next = \
+ XSIMPLEQ_XOR(head, (elm)->field.sqx_next) \
+ ->field.sqx_next) \
+ == XSIMPLEQ_XOR(head, NULL)) \
+ (head)->sqx_last = \
+ XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
+ } while (0)
/*
* Tail queue definitions.
*/
-#define TAILQ_HEAD(name, type) \
-struct name { \
- struct type *tqh_first; /* first element */ \
- struct type **tqh_last; /* addr of last next element */ \
-}
-
-#define TAILQ_HEAD_INITIALIZER(head) \
- { NULL, &(head).tqh_first }
-
-#define TAILQ_ENTRY(type) \
-struct { \
- struct type *tqe_next; /* next element */ \
- struct type **tqe_prev; /* address of previous next element */ \
-}
+#define TAILQ_HEAD(name, type) \
+ struct name { \
+ struct type *tqh_first; /* first element */ \
+ struct type **tqh_last; /* addr of last next element */ \
+ }
+
+#define TAILQ_HEAD_INITIALIZER(head) \
+ { \
+ NULL, &(head).tqh_first \
+ }
+
+#define TAILQ_ENTRY(type) \
+ struct { \
+ struct type *tqe_next; /* next element */ \
+ struct type **tqe_prev; /* address of previous next element */ \
+ }
/*
* Tail queue access methods.
#define TAILQ_FIRST(head) ((head)->tqh_first)
#define TAILQ_END(head) NULL
#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
-#define TAILQ_LAST(head, headname) \
+#define TAILQ_LAST(head, headname) \
(*(((struct headname *)((head)->tqh_last))->tqh_last))
/* XXX */
-#define TAILQ_PREV(elm, headname, field) \
+#define TAILQ_PREV(elm, headname, field) \
(*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
-#define TAILQ_EMPTY(head) \
- (TAILQ_FIRST(head) == TAILQ_END(head))
+#define TAILQ_EMPTY(head) (TAILQ_FIRST(head) == TAILQ_END(head))
-#define TAILQ_FOREACH(var, head, field) \
- for((var) = TAILQ_FIRST(head); \
- (var) != TAILQ_END(head); \
- (var) = TAILQ_NEXT(var, field))
+#define TAILQ_FOREACH(var, head, field) \
+ for ((var) = TAILQ_FIRST(head); (var) != TAILQ_END(head); \
+ (var) = TAILQ_NEXT(var, field))
-#define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
- for ((var) = TAILQ_FIRST(head); \
- (var) != TAILQ_END(head) && \
- ((tvar) = TAILQ_NEXT(var, field), 1); \
- (var) = (tvar))
+#define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
+ for ((var) = TAILQ_FIRST(head); \
+ (var) != TAILQ_END(head) && ((tvar) = TAILQ_NEXT(var, field), 1); \
+ (var) = (tvar))
-#define TAILQ_FOREACH_REVERSE(var, head, headname, field) \
- for((var) = TAILQ_LAST(head, headname); \
- (var) != TAILQ_END(head); \
- (var) = TAILQ_PREV(var, headname, field))
+#define TAILQ_FOREACH_REVERSE(var, head, headname, field) \
+ for ((var) = TAILQ_LAST(head, headname); (var) != TAILQ_END(head); \
+ (var) = TAILQ_PREV(var, headname, field))
-#define TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar) \
- for ((var) = TAILQ_LAST(head, headname); \
- (var) != TAILQ_END(head) && \
- ((tvar) = TAILQ_PREV(var, headname, field), 1); \
- (var) = (tvar))
+#define TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar) \
+ for ((var) = TAILQ_LAST(head, headname); \
+ (var) != TAILQ_END(head) \
+ && ((tvar) = TAILQ_PREV(var, headname, field), 1); \
+ (var) = (tvar))
/*
* Tail queue functions.
*/
-#define TAILQ_INIT(head) do { \
- (head)->tqh_first = NULL; \
- (head)->tqh_last = &(head)->tqh_first; \
-} while (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 (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 (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 (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 (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; \
- _Q_INVALIDATE((elm)->field.tqe_prev); \
- _Q_INVALIDATE((elm)->field.tqe_next); \
-} while (0)
-
-#define TAILQ_REPLACE(head, elm, elm2, field) do { \
- if (((elm2)->field.tqe_next = (elm)->field.tqe_next) != NULL) \
- (elm2)->field.tqe_next->field.tqe_prev = \
- &(elm2)->field.tqe_next; \
- else \
- (head)->tqh_last = &(elm2)->field.tqe_next; \
- (elm2)->field.tqe_prev = (elm)->field.tqe_prev; \
- *(elm2)->field.tqe_prev = (elm2); \
- _Q_INVALIDATE((elm)->field.tqe_prev); \
- _Q_INVALIDATE((elm)->field.tqe_next); \
-} while (0)
-
-#define 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; \
- TAILQ_INIT((head2)); \
- } \
-} while (0)
-
-#endif /* !_SYS_QUEUE_H_ */
+#define TAILQ_INIT(head) \
+ do { \
+ (head)->tqh_first = NULL; \
+ (head)->tqh_last = &(head)->tqh_first; \
+ } while (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 (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 (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 (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 (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; \
+ _Q_INVALIDATE((elm)->field.tqe_prev); \
+ _Q_INVALIDATE((elm)->field.tqe_next); \
+ } while (0)
+
+#define TAILQ_REPLACE(head, elm, elm2, field) \
+ do { \
+ if (((elm2)->field.tqe_next = (elm)->field.tqe_next) != NULL) \
+ (elm2)->field.tqe_next->field.tqe_prev = \
+ &(elm2)->field.tqe_next; \
+ else \
+ (head)->tqh_last = &(elm2)->field.tqe_next; \
+ (elm2)->field.tqe_prev = (elm)->field.tqe_prev; \
+ *(elm2)->field.tqe_prev = (elm2); \
+ _Q_INVALIDATE((elm)->field.tqe_prev); \
+ _Q_INVALIDATE((elm)->field.tqe_next); \
+ } while (0)
+
+#define 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; \
+ TAILQ_INIT((head2)); \
+ } \
+ } while (0)
+
+#endif /* !_SYS_QUEUE_H_ */
projects / mirror_frr.git / blobdiff