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 /* 28 * ASSERTION: 29 * Aggregating functions may never be speculative. 30 * 31 * SECTION: Speculative Tracing/Using a Speculation 32 * 33 */ 34 #pragma D option quiet 35 36 BEGIN 37 { 38 i = 0; 39 } 40 41 syscall:::entry 42 { 43 self->ts = timestamp; 44 } 45 46 syscall:::return 47 /self->ts/ 48 { 49 var = speculation(); 50 speculate(var); 51 printf("Speculation ID: %d", var); 52 @Qauntus[execname] = quantize(timestamp - self->ts); 53 i++; 54 } 55 56 syscall::: 57 /1 == i/ 58 { 59 exit(0); 60 } 61 62 ERROR 63 { 64 exit(0); 65 } 66