diff options
| -rw-r--r-- | sys/sys/queue.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/sys/queue.h b/sys/sys/queue.h index abe8e98..1cabb83 100644 --- a/sys/sys/queue.h +++ b/sys/sys/queue.h @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)queue.h 8.5 (Berkeley) 8/20/94 - * $Id: queue.h,v 1.9 1996/04/08 07:51:57 phk Exp $ + * $Id: queue.h,v 1.10 1996/05/18 03:37:21 dyson Exp $ */ #ifndef _SYS_QUEUE_H_ @@ -103,6 +103,10 @@ struct { \ /* * Singly-linked List functions. */ +#define SLIST_EMPTY(head) ((head)->slh_first == NULL) + +#define SLIST_FIRST(head) ((head)->slh_first) + #define SLIST_INIT(head) { \ (head)->slh_first = NULL; \ } @@ -117,6 +121,8 @@ struct { \ (head)->slh_first = (elm); \ } +#define SLIST_NEXT(elm, field) ((elm)->field.sle_next) + #define SLIST_REMOVE_HEAD(head, field) { \ (head)->slh_first = (head)->slh_first->field.sle_next; \ } |
