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 "Aggregations" Chapter. 28 * 29 * The full text of the this chapter may be found here: 30 * 31 * http://wikis.sun.com/display/DTrace/Aggregations 32 * 33 * On machines that have DTrace installed, this script is available as 34 * dateprof.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 syscall::exec:return, 42 syscall::exece:return 43 /execname == "date"/ 44 { 45 self->start = vtimestamp; 46 } 47 48 syscall:::entry 49 /self->start/ 50 { 51 /* 52 * We linearly quantize on the current virtual time minus our 53 * process's start time. We divide by 1000 to yield microseconds 54 * rather than nanoseconds. The range runs from 0 to 10 milliseconds 55 * in steps of 100 microseconds; we expect that no date(1) process 56 * will take longer than 10 milliseconds to complete. 57 */ 58 @["system calls over time"] = 59 lquantize((vtimestamp - self->start) / 1000, 0, 10000, 100); 60 } 61 62 syscall::rexit:entry 63 /self->start/ 64 { 65 self->start = 0; 66 } 67