1#!/usr/sbin/dtrace -Zs
2/*
3 * tcl_who.d - trace Tcl calls by process using DTrace.
4 *           Written for the Tcl DTrace provider.
5 *
6 * $Id: tcl_who.d 63 2007-10-04 04:34:38Z brendan $
7 *
8 * This traces activity from all Tcl processes on the system with DTrace
9 * provider support (tcl8.4.16).
10 *
11 * USAGE: tcl_who.d 		# hit Ctrl-C to end
12 *
13 * FIELDS:
14 *		PID		Process ID of Tcl
15 *		UID		User ID of the owner
16 *		CALLS		Number of calls made (proc + cmd)
17 *		ARGS		Process name and arguments
18 *
19 * Calls is a measure of activity, and is a count of the procedures and
20 * commands that Tcl called.
21 *
22 * The argument list is truncated at 55 characters (up to 80 is easily
23 * available). To easily read the full argument list, use other system tools;
24 * on Solaris use "pargs PID".
25 *
26 * COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
27 *
28 * CDDL HEADER START
29 *
30 *  The contents of this file are subject to the terms of the
31 *  Common Development and Distribution License, Version 1.0 only
32 *  (the "License").  You may not use this file except in compliance
33 *  with the License.
34 *
35 *  You can obtain a copy of the license at Docs/cddl1.txt
36 *  or http://www.opensolaris.org/os/licensing.
37 *  See the License for the specific language governing permissions
38 *  and limitations under the License.
39 *
40 * CDDL HEADER END
41 *
42 * 09-Sep-2007	Brendan Gregg	Created this.
43 */
44
45#pragma D option quiet
46
47dtrace:::BEGIN
48{
49	printf("Tracing... Hit Ctrl-C to end.\n");
50}
51
52tcl*:::proc-entry,
53tcl*:::cmd-entry
54{
55	@calls[pid, uid, curpsinfo->pr_psargs] = count();
56}
57
58dtrace:::END
59{
60	printf("   %6s %6s %6s %-55s\n", "PID", "UID", "CALLS", "ARGS");
61	printa("   %6d %6d %@6d %-55.55s\n", @calls);
62}
63