1235368Sgnn#!/usr/sbin/dtrace -Zs 2235368Sgnn/* 3235368Sgnn * j_thread.d - snoop Java thread execution using DTrace. 4235368Sgnn Written for the Java hotspot DTrace provider. 5235368Sgnn * 6235368Sgnn * $Id: j_thread.d 19 2007-09-12 07:47:59Z brendan $ 7235368Sgnn * 8235368Sgnn * This traces activity from all Java processes on the system with hotspot 9235368Sgnn * provider support (1.6.0). 10235368Sgnn * 11235368Sgnn * USAGE: j_thread.d # hit Ctrl-C to end 12235368Sgnn * 13235368Sgnn * FIELDS: 14235368Sgnn * TIME Time string 15235368Sgnn * PID Process ID 16235368Sgnn * TID Thread ID 17235368Sgnn * THREAD Thread name 18235368Sgnn * 19235368Sgnn * LEGEND: 20235368Sgnn * => thread start 21235368Sgnn * <= thread end 22235368Sgnn * 23235368Sgnn * COPYRIGHT: Copyright (c) 2007 Brendan Gregg. 24235368Sgnn * 25235368Sgnn * CDDL HEADER START 26235368Sgnn * 27235368Sgnn * The contents of this file are subject to the terms of the 28235368Sgnn * Common Development and Distribution License, Version 1.0 only 29235368Sgnn * (the "License"). You may not use this file except in compliance 30235368Sgnn * with the License. 31235368Sgnn * 32235368Sgnn * You can obtain a copy of the license at Docs/cddl1.txt 33235368Sgnn * or http://www.opensolaris.org/os/licensing. 34235368Sgnn * See the License for the specific language governing permissions 35235368Sgnn * and limitations under the License. 36235368Sgnn * 37235368Sgnn * CDDL HEADER END 38235368Sgnn * 39235368Sgnn * 09-Sep-2007 Brendan Gregg Created this. 40235368Sgnn */ 41235368Sgnn 42235368Sgnn#pragma D option quiet 43235368Sgnn#pragma D option switchrate=10 44235368Sgnn 45235368Sgnndtrace:::BEGIN 46235368Sgnn{ 47235368Sgnn printf("%-20s %6s/%-5s -- %s\n", "TIME", "PID", "TID", "THREAD"); 48235368Sgnn} 49235368Sgnn 50235368Sgnnhotspot*:::thread-start 51235368Sgnn{ 52235368Sgnn this->thread = (char *)copyin(arg0, arg1 + 1); 53235368Sgnn this->thread[arg1] = '\0'; 54235368Sgnn printf("%-20Y %6d/%-5d => %s\n", walltimestamp, pid, tid, 55235368Sgnn stringof(this->thread)); 56235368Sgnn} 57235368Sgnn 58235368Sgnnhotspot*:::thread-stop 59235368Sgnn{ 60235368Sgnn this->thread = (char *)copyin(arg0, arg1 + 1); 61235368Sgnn this->thread[arg1] = '\0'; 62235368Sgnn printf("%-20Y %6d/%-5d <= %s\n", walltimestamp, pid, tid, 63235368Sgnn stringof(this->thread)); 64235368Sgnn} 65