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| author | phk <phk@FreeBSD.org> | 1996-12-29 21:14:06 +0000 |
|---|---|---|
| committer | phk <phk@FreeBSD.org> | 1996-12-29 21:14:06 +0000 |
| commit | f1d17a487d67ecb4abe31aa12d94c1fd17e0513b (patch) | |
| tree | 273d3cced2d1a52aae6eb8580f3bd557b4b90eaa /sys | |
| parent | e1bb1cc95e64d0b01bb7f5e247843ada3c31c28f (diff) | |
| download | FreeBSD-src-f1d17a487d67ecb4abe31aa12d94c1fd17e0513b.zip FreeBSD-src-f1d17a487d67ecb4abe31aa12d94c1fd17e0513b.tar.gz | |
Add
SLIST_EMPTY(head)
SLIST_FIRST(head)
SLIST_NEXT(elm, field)
Which do the obvious things while hiding implementation details.
Diffstat (limited to 'sys')
| -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; \ } |
