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 2007 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 * Can call discard on an already discarded buffer. 32 * 33 * SECTION: Speculative Tracing/Discarding a Speculation; 34 * Options and Tunables/cleanrate 35 * 36 */ 37 #pragma D option quiet 38 #pragma D option cleanrate=3000hz 39 40 BEGIN 41 { 42 self->i = 0; 43 self->discard1 = 0; 44 self->discard2 = 0; 45 var1 = speculation(); 46 printf("Speculation ID: %d\n", var1); 47 } 48 49 BEGIN 50 /var1/ 51 { 52 speculate(var1); 53 printf("This statement and the following are speculative!!\n"); 54 printf("Speculating on id: %d\n", var1); 55 self->i++; 56 } 57 58 BEGIN 59 /(self->i)/ 60 { 61 discard(var1); 62 self->discard1++; 63 discard(var1); 64 self->discard2++; 65 } 66 67 BEGIN 68 /(self->discard2) && (self->discard1)/ 69 { 70 printf("Discarded a discarded buffer\n"); 71 exit(0); 72 } 73 74 75 BEGIN 76 /(!self->discard2) || (!self->discard1)/ 77 { 78 printf("Couldnt discard a discarded buffer\n"); 79 exit(1); 80 } 81 82 ERROR 83 { 84 exit(1); 85 } 86