| /* |
| * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * Thread Dump utility class for printing |
| * @author Mandy Chung |
| */ |
| |
| import java.lang.management.*; |
| import java.util.*; |
| |
| public class ThreadDump { |
| private static final String INDENT = " "; |
| |
| public static void printThreadInfo(ThreadInfo ti) { |
| StringBuilder sb = new StringBuilder("\"" + ti.getThreadName() + "\"" + |
| (ti.isDaemon() ? " daemon" : "") + |
| " Id=" + ti.getThreadId() + |
| " in " + ti.getThreadState()); |
| if (ti.getLockName() != null) { |
| sb.append(" on lock=" + ti.getLockName()); |
| } |
| if (ti.isSuspended()) { |
| sb.append(" (suspended)"); |
| } |
| if (ti.isInNative()) { |
| sb.append(" (running in native)"); |
| } |
| System.out.println(sb.toString()); |
| if (ti.getLockOwnerName() != null) { |
| System.out.println(INDENT + " owned by " + ti.getLockOwnerName() + |
| " Id=" + ti.getLockOwnerId()); |
| } |
| StackTraceElement[] stacktrace = ti.getStackTrace(); |
| MonitorInfo[] monitors = ti.getLockedMonitors(); |
| for (int i = 0; i < stacktrace.length; i++) { |
| StackTraceElement ste = stacktrace[i]; |
| System.out.println(INDENT + "at " + ste.toString()); |
| |
| for (MonitorInfo mi : monitors) { |
| if (mi.getLockedStackDepth() == i) { |
| System.out.println(INDENT + " - locked " + mi); |
| } |
| } |
| } |
| System.out.println(); |
| } |
| |
| public static void printStack(StackTraceElement[] stack) { |
| System.out.println(INDENT + "Stack: (length = " + stack.length + ")"); |
| for (int j = 0; j < stack.length; j++) { |
| System.out.println(INDENT + INDENT + stack[j]); |
| } |
| System.out.println(); |
| } |
| |
| public static void dumpStacks() { |
| // Get stack traces of all Threads |
| Map m = Thread.getAllStackTraces(); |
| Set s = m.entrySet(); |
| Iterator iter = s.iterator(); |
| |
| Map.Entry entry; |
| while (iter.hasNext()) { |
| entry = (Map.Entry) iter.next(); |
| Thread t = (Thread) entry.getKey(); |
| StackTraceElement[] stack = (StackTraceElement[]) entry.getValue(); |
| System.out.println(t); |
| printStack(stack); |
| } |
| } |
| |
| public static void printLockInfo(LockInfo[] locks) { |
| System.out.println(INDENT + "Locked synchronizers: count = " + locks.length); |
| for (LockInfo li : locks) { |
| System.out.println(INDENT + " - " + li); |
| } |
| } |
| |
| static ThreadMXBean tmbean = ManagementFactory.getThreadMXBean(); |
| public static void threadDump() { |
| System.out.println("Full Java thread dump"); |
| ThreadInfo[] tinfos = tmbean.dumpAllThreads(true, true); |
| for (ThreadInfo ti : tinfos) { |
| printThreadInfo(ti); |
| LockInfo[] syncs = ti.getLockedSynchronizers(); |
| printLockInfo(syncs); |
| System.out.println(); |
| } |
| } |
| |
| } |