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