1*2633Sahl /* 2*2633Sahl * CDDL HEADER START 3*2633Sahl * 4*2633Sahl * The contents of this file are subject to the terms of the 5*2633Sahl * Common Development and Distribution License (the "License"). 6*2633Sahl * You may not use this file except in compliance with the License. 7*2633Sahl * 8*2633Sahl * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*2633Sahl * or http://www.opensolaris.org/os/licensing. 10*2633Sahl * See the License for the specific language governing permissions 11*2633Sahl * and limitations under the License. 12*2633Sahl * 13*2633Sahl * When distributing Covered Code, include this CDDL HEADER in each 14*2633Sahl * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15*2633Sahl * If applicable, add the following below this CDDL HEADER, with the 16*2633Sahl * fields enclosed by brackets "[]" replaced with your own identifying 17*2633Sahl * information: Portions Copyright [yyyy] [name of copyright owner] 18*2633Sahl * 19*2633Sahl * CDDL HEADER END 20*2633Sahl */ 21*2633Sahl 22*2633Sahl /* 23*2633Sahl * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24*2633Sahl * Use is subject to license terms. 25*2633Sahl */ 26*2633Sahl 27*2633Sahl #pragma ident "%Z%%M% %I% %E% SMI" 28*2633Sahl 29*2633Sahl /* 30*2633Sahl * ASSERTION: 31*2633Sahl * Positive test for ring buffer policy. 32*2633Sahl * 33*2633Sahl * SECTION: Buffers and Buffering/ring Policy; 34*2633Sahl * Buffers and Buffering/Buffer Sizes; 35*2633Sahl * Options and Tunables/bufsize; 36*2633Sahl * Options and Tunables/bufpolicy; 37*2633Sahl * Options and Tunables/switchrate 38*2633Sahl */ 39*2633Sahl 40*2633Sahl /* 41*2633Sahl * We assume that a trace() of an integer stores at least 8 bytes. If ring 42*2633Sahl * buffering is not working properly, this trace() will induce a drop, and the 43*2633Sahl * counter won't be incremented. We set the switchrate to one second just to 44*2633Sahl * sure that a high switchrate doesn't mask broken ring buffers. 45*2633Sahl */ 46*2633Sahl #pragma D option bufpolicy=ring 47*2633Sahl #pragma D option bufsize=50 48*2633Sahl #pragma D option switchrate=1sec 49*2633Sahl 50*2633Sahl int n; 51*2633Sahl int i; 52*2633Sahl 53*2633Sahl tick-10msec 54*2633Sahl /n < 300/ 55*2633Sahl { 56*2633Sahl trace(i); 57*2633Sahl i++; 58*2633Sahl } 59*2633Sahl 60*2633Sahl tick-10msec 61*2633Sahl /n < 300/ 62*2633Sahl { 63*2633Sahl n++; 64*2633Sahl } 65*2633Sahl 66*2633Sahl tick-10msec 67*2633Sahl /n == 300/ 68*2633Sahl { 69*2633Sahl exit(2); 70*2633Sahl } 71*2633Sahl 72*2633Sahl END 73*2633Sahl { 74*2633Sahl exit(i == 300 ? 0 : 1); 75*2633Sahl } 76