usr/src/cmd/dtrace/demo/agg/dateprof.d

   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 }