#!/usr/sbin/dtrace -Zs
/*
* j_thread.d - snoop Java thread execution using DTrace.
Written for the Java hotspot DTrace provider.
*
* $Id: j_thread.d 19 2007-09-12 07:47:59Z brendan $
*
* This traces activity from all Java processes on the system with hotspot
* provider support (1.6.0).
*
* USAGE: j_thread.d # hit Ctrl-C to end
*
* FIELDS:
* TIME Time string
* PID Process ID
* TID Thread ID
* THREAD Thread name
*
* LEGEND:
* => thread start
* <= thread end
*
* COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at Docs/cddl1.txt
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* CDDL HEADER END
*
* 09-Sep-2007 Brendan Gregg Created this.
*/
#pragma D option quiet
#pragma D option switchrate=10
dtrace:::BEGIN
{
printf("%-20s %6s/%-5s -- %s\n", "TIME", "PID", "TID", "THREAD");
}
hotspot*:::thread-start
{
this->thread = (char *)copyin(arg0, arg1 + 1);
this->thread[arg1] = '\0';
printf("%-20Y %6d/%-5d => %s\n", walltimestamp, pid, tid,
stringof(this->thread));
}
hotspot*:::thread-stop
{
this->thread = (char *)copyin(arg0, arg1 + 1);
this->thread[arg1] = '\0';
printf("%-20Y %6d/%-5d <= %s\n", walltimestamp, pid, tid,
stringof(this->thread));
}