Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.lang.management.LockInfo;

import java.lang.management.MonitorInfo;
import java.lang.management.ThreadInfo;

public class Main {
    private static String threadInfoToString(ThreadInfo threadInfo) {
        StringBuilder sb = new StringBuilder("\"" + threadInfo.getThreadName() + "\"" + " Id="
                + threadInfo.getThreadId() + " " + threadInfo.getThreadState());
        if (threadInfo.getLockName() != null) {
            sb.append(" on " + threadInfo.getLockName());
        }
        if (threadInfo.getLockOwnerName() != null) {
            sb.append(" owned by \"" + threadInfo.getLockOwnerName() + "\" Id=" + threadInfo.getLockOwnerId());
        }
        if (threadInfo.isSuspended()) {
            sb.append(" (suspended)");
        }
        if (threadInfo.isInNative()) {
            sb.append(" (in native)");
        }
        sb.append('\n');
        int i = 0;
        for (; i < threadInfo.getStackTrace().length; i++) {
            StackTraceElement ste = threadInfo.getStackTrace()[i];
            sb.append("\tat " + ste.toString());
            sb.append('\n');
            if (i == 0 && threadInfo.getLockInfo() != null) {
                Thread.State ts = threadInfo.getThreadState();
                switch (ts) {
                case BLOCKED:
                    sb.append("\t-  blocked on " + threadInfo.getLockInfo());
                    sb.append('\n');
                    break;
                case WAITING:
                    sb.append("\t-  waiting on " + threadInfo.getLockInfo());
                    sb.append('\n');
                    break;
                case TIMED_WAITING:
                    sb.append("\t-  waiting on " + threadInfo.getLockInfo());
                    sb.append('\n');
                    break;
                default:
                }
            }

            for (MonitorInfo mi : threadInfo.getLockedMonitors()) {
                if (mi.getLockedStackDepth() == i) {
                    sb.append("\t-  locked " + mi);
                    sb.append('\n');
                }
            }
        }

        LockInfo[] locks = threadInfo.getLockedSynchronizers();
        if (locks.length > 0) {
            sb.append("\n\tNumber of locked synchronizers = " + locks.length);
            sb.append('\n');
            for (LockInfo li : locks) {
                sb.append("\t- " + li);
                sb.append('\n');
            }
        }
        sb.append('\n');
        return sb.toString();
    }
}