/*
* 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 "@(#)tst.ring1.d 1.1 06/08/28 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);
}