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 27 syscall::exec:return, 28 syscall::exece:return 29 /execname == "date"/ 30 { 31 self->start = vtimestamp; 32 } 33 34 syscall:::entry 35 /self->start/ 36 { 37 /* 38 * We linearly quantize on the current virtual time minus our 39 * process's start time. We divide by 1000 to yield microseconds 40 * rather than nanoseconds. The range runs from 0 to 10 milliseconds 41 * in steps of 100 microseconds; we expect that no date(1) process 42 * will take longer than 10 milliseconds to complete. 43 */ 44 @["system calls over time"] = 45 lquantize((vtimestamp - self->start) / 1000, 0, 10000, 100); 46 } 47 48 syscall::rexit:entry 49 /self->start/ 50 { 51 self->start = 0; 52 } 53