err.D_ACT_SPEC.SpeculateWithBreakPoint.d revision 178476
1#!/usr/sbin/dtrace -ws 2/* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23/* 24 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28#pragma ident "%Z%%M% %I% %E% SMI" 29 30/* 31 * ASSERTION: 32 * Destructive actions may never be speculative. 33 * 34 * SECTION: Speculative Tracing/Using a Speculation 35 * SECTION: dtrace(1M) Utility/ -w option 36 * 37 */ 38#pragma D option quiet 39 40BEGIN 41{ 42 i = 0; 43} 44 45syscall::: 46/i < 1/ 47{ 48 var = speculation(); 49 speculate(var); 50 printf("Speculation ID: %d", var); 51 breakpoint(); 52 i++; 53} 54 55syscall::: 56/1 == i/ 57{ 58 exit(0); 59} 60 61ERROR 62{ 63 exit(0); 64} 65 66END 67{ 68 exit(0); 69} 70