xref: /netbsd-src/external/cddl/dtracetoolkit/dist/Java/j_thread.d (revision c29d51755812ace2e87aeefdb06cb2b4dac7087a)
1 #!/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,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $
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 
45 dtrace:::BEGIN
46 {
47 	printf("%-20s  %6s/%-5s -- %s\n", "TIME", "PID", "TID", "THREAD");
48 }
49 
50 hotspot*:::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 
58 hotspot*:::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