Mercurial > illumos > onarm
view usr/src/cmd/dtrace/test/tst/common/buffering/tst.ring1.d @ 0:c9caec207d52 b86
Initial porting based on b86
author | Koji Uno <koji.uno@sun.com> |
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date | Tue, 02 Jun 2009 18:56:50 +0900 |
parents | |
children | 1a15d5aaf794 |
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/* * 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); }