diff options
Diffstat (limited to 'lib/isc/include/isc/list.h')
| -rw-r--r-- | lib/isc/include/isc/list.h | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/lib/isc/include/isc/list.h b/lib/isc/include/isc/list.h index 9338275c940a..c9bdfc7ad6bc 100644 --- a/lib/isc/include/isc/list.h +++ b/lib/isc/include/isc/list.h @@ -1,5 +1,5 @@ /* - * Copyright (C) 2004, 2006, 2007 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 2004, 2006, 2007, 2011, 2012 Internet Systems Consortium, Inc. ("ISC") * Copyright (C) 1997-2002 Internet Software Consortium. * * Permission to use, copy, modify, and/or distribute this software for any @@ -15,7 +15,7 @@ * PERFORMANCE OF THIS SOFTWARE. */ -/* $Id: list.h,v 1.24 2007/06/19 23:47:18 tbox Exp $ */ +/* $Id$ */ #ifndef ISC_LIST_H #define ISC_LIST_H 1 @@ -169,6 +169,19 @@ (list2).tail = NULL; \ } while (0) +#define ISC_LIST_PREPENDLIST(list1, list2, link) \ + do { \ + if (ISC_LIST_EMPTY(list1)) \ + (list1) = (list2); \ + else if (!ISC_LIST_EMPTY(list2)) { \ + (list2).tail->link.next = (list1).head; \ + (list1).head->link.prev = (list2).tail; \ + (list1).head = (list2).head; \ + } \ + (list2).head = NULL; \ + (list2).tail = NULL; \ + } while (0) + #define ISC_LIST_ENQUEUE(list, elt, link) ISC_LIST_APPEND(list, elt, link) #define __ISC_LIST_ENQUEUEUNSAFE(list, elt, link) \ __ISC_LIST_APPENDUNSAFE(list, elt, link) |