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