Module Name: src
Committed By: christos
Date: Tue Nov 26 01:27:46 UTC 2013
Modified Files:
src/sys/sys: queue.h
Log Message:
Provide TAILQ_REPLACE for tmux, from FreeBSD.
To generate a diff of this commit:
cvs rdiff -u -r1.59 -r1.60 src/sys/sys/queue.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/sys/queue.h
diff -u src/sys/sys/queue.h:1.59 src/sys/sys/queue.h:1.60
--- src/sys/sys/queue.h:1.59 Sun Nov 24 22:02:57 2013
+++ src/sys/sys/queue.h Mon Nov 25 20:27:46 2013
@@ -1,4 +1,4 @@
-/* $NetBSD: queue.h,v 1.59 2013/11/25 03:02:57 christos Exp $ */
+/* $NetBSD: queue.h,v 1.60 2013/11/26 01:27:46 christos Exp $ */
/*
* Copyright (c) 1991, 1993
@@ -556,6 +556,18 @@ struct { \
QUEUEDEBUG_TAILQ_POSTREMOVE((elm), field); \
} while (/*CONSTCOND*/0)
+#define TAILQ_REPLACE(head, elm, elm2, field) do { \
+ if (((elm2)->field.tqe_next = (elm)->field.tqe_next) != \
+ TAILQ_END(head)) \
+ (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); \
+ QUEUEDEBUG_TAILQ_POSTREMOVE((elm), field); \
+} while (/*CONSTCOND*/0)
+
#define TAILQ_FOREACH(var, head, field) \
for ((var) = ((head)->tqh_first); \
(var) != TAILQ_END(head); \
