1 files changed, 75 insertions, 0 deletions
diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/buffering/tst.ring1.d b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/buffering/tst.ring1.d
new file mode 100644
index 000000000000..67e7b8755561
--- /dev/null
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/buffering/tst.ring1.d
@@ -0,0 +1,75 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*
+ * ASSERTION:
+ *   Positive test for ring buffer policy.
+ *
+ * SECTION: Buffers and Buffering/ring Policy;
+ *	Buffers and Buffering/Buffer Sizes;
+ *	Options and Tunables/bufsize;
+ *	Options and Tunables/bufpolicy;
+ *	Options and Tunables/switchrate
+ */
+
+/*
+ * We assume that a trace() of an integer stores at least 8 bytes.  If ring
+ * buffering is not working properly, this trace() will induce a drop, and the
+ * counter won't be incremented.  We set the switchrate to one second just to
+ * sure that a high switchrate doesn't mask broken ring buffers.
+ */
+#pragma D option bufpolicy=ring
+#pragma D option bufsize=50
+#pragma D option switchrate=1sec
+
+int n;
+int i;
+
+tick-10msec
+/n < 300/
+{
+	trace(i);
+	i++;
+}
+
+tick-10msec
+/n < 300/
+{
+	n++;
+}
+
+tick-10msec
+/n == 300/
+{
+	exit(2);
+}
+
+END
+{
+	exit(i == 300 ? 0 : 1);
+}