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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * 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 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * 26 * This D script is used as an example in the Solaris Dynamic Tracing Guide 27 * wiki in the "sdt Provider" Chapter. 28 * 29 * The full text of the this chapter may be found here: 30 * 31 * http://wikis.sun.com/display/DTrace/sdt+Provider 32 * 33 * On machines that have DTrace installed, this script is available as 34 * interval.d in /usr/demo/dtrace, a directory that contains all D scripts 35 * used in the Solaris Dynamic Tracing Guide. A table of the scripts and their 36 * corresponding chapters may be found here: 37 * 38 * file:///usr/demo/dtrace/index.html 39 */ 40 41 #pragma D option quiet 42 43 sdt:::callout-start 44 { 45 self->callout = ((callout_t *)arg0)->c_func; 46 } 47 48 fbt::timeout:entry 49 /self->callout && arg2 <= 100/ 50 { 51 /* 52 * In this case, we are most interested in interval timeout(9F)s that 53 * are short. We therefore do a linear quantization from 0 ticks to 54 * 100 ticks. The system clock's frequency ? set by the variable 55 * "hz" ? defaults to 100, so 100 system clock ticks is one second. 56 */ 57 @callout[self->callout] = lquantize(arg2, 0, 100); 58 } 59 60 sdt:::callout-end 61 { 62 self->callout = NULL; 63 } 64 65 END 66 { 67 printa("%a\n%@d\n\n", @callout); 68 } 69