1235368Sgnn#!/usr/sbin/dtrace -Zs
2/*
3 * j_thread.d - snoop Java thread execution using DTrace.
4                Written for the Java hotspot DTrace provider.
5 *
6 * $Id: j_thread.d 19 2007-09-12 07:47:59Z brendan $
7 *
8 * This traces activity from all Java processes on the system with hotspot
9 * provider support (1.6.0).
10 *
11 * USAGE: j_thread.d 		# hit Ctrl-C to end
12 *
13 * FIELDS:
14 *		TIME		Time string
15 *		PID		Process ID
16 *		TID		Thread ID
17 *		THREAD		Thread name
18 *
19 * LEGEND:
20 *		=>		thread start
21 *		<=		thread end
22 *
23 * COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
24 *
25 * CDDL HEADER START
26 *
27 *  The contents of this file are subject to the terms of the
28 *  Common Development and Distribution License, Version 1.0 only
29 *  (the "License").  You may not use this file except in compliance
30 *  with the License.
31 *
32 *  You can obtain a copy of the license at Docs/cddl1.txt
33 *  or http://www.opensolaris.org/os/licensing.
34 *  See the License for the specific language governing permissions
35 *  and limitations under the License.
36 *
37 * CDDL HEADER END
38 *
39 * 09-Sep-2007	Brendan Gregg	Created this.
40 */
41
42#pragma D option quiet
43#pragma D option switchrate=10
44
45dtrace:::BEGIN
46{
47	printf("%-20s  %6s/%-5s -- %s\n", "TIME", "PID", "TID", "THREAD");
48}
49
50hotspot*:::thread-start
51{
52	this->thread = (char *)copyin(arg0, arg1 + 1);
53	this->thread[arg1] = '\0';
54	printf("%-20Y  %6d/%-5d => %s\n", walltimestamp, pid, tid,
55	    stringof(this->thread));
56}
57
58hotspot*:::thread-stop
59{
60	this->thread = (char *)copyin(arg0, arg1 + 1);
61	this->thread[arg1] = '\0';
62	printf("%-20Y  %6d/%-5d <= %s\n", walltimestamp, pid, tid,
63	    stringof(this->thread));
64}
65