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 * The number of speculative buffers defaults to one. If no speculative buffer 30 * is available when speculation is called, an ID of zero is returned. 31 * 32 * SECTION: Speculative Tracing/Creating a Speculation 33 * 34 */ 35 #pragma D option quiet 36 37 BEGIN 38 { 39 i = 0; 40 } 41 42 syscall::open:entry 43 /i < 2/ 44 { 45 self->spec = speculation(); 46 printf("Speculative buffer ID: %d\n", self->spec); 47 i++; 48 } 49 50 syscall::: 51 /(2 == i) && (0 == self->spec)/ 52 { 53 printf("i: %d\tself->spec: %d", i, self->spec); 54 exit(0); 55 } 56 57 syscall::: 58 /(2 == i) && (0 != self->spec)/ 59 { 60 printf("i: %d\tself->spec: %d", i, self->spec); 61 exit(1); 62 } 63