3 * j_thread.d - snoop Java thread execution using DTrace.
4 Written for the Java hotspot DTrace provider.
6 * $Id: j_thread.d 19 2007-09-12 07:47:59Z brendan $
8 * This traces activity from all Java processes on the system with hotspot
9 * provider support (1.6.0).
11 * USAGE: j_thread.d # hit Ctrl-C to end
23 * COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
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
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.
39 * 09-Sep-2007 Brendan Gregg Created this.
42 #pragma D option quiet
43 #pragma D option switchrate=10
47 printf("%-20s %6s/%-5s -- %s\n", "TIME", "PID", "TID", "THREAD");
50 hotspot*:::thread-start
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));
58 hotspot*:::thread-stop
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));