Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 *  Copyright 2015 the original author or authors. 
 *  @https://github.com/scouter-project/scouter
 *
 *  Licensed 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.ManagementFactory;
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;

public class Main {
    public static String getThreadStack(long id) {
        ThreadMXBean tmb = ManagementFactory.getThreadMXBean();
        ThreadInfo f = tmb.getThreadInfo(id, 500);
        if (f == null)
            return null;
        return getStackTrace(f.getStackTrace());
    }

    public static String getThreadStack() {
        return getStackTrace(Thread.currentThread().getStackTrace());
    }

    public static String getStackTrace(StackTraceElement[] se) {
        return getStackTrace(se, 0);
    }

    public static String getStackTrace(StackTraceElement[] se, int skip) {
        if (se == null || se.length <= skip)
            return "";
        String CRLF = System.getProperty("line.separator");
        StringBuffer sb = new StringBuffer();
        for (int i = skip; i < se.length; i++) {
            if (sb.length() > 0) {
                sb.append(CRLF);
            }
            sb.append(se[i]);
        }
        return sb.toString();
    }

    public static String getStackTrace(Throwable t) {
        String CRLF = System.getProperty("line.separator");
        StringBuffer sb = new StringBuffer();
        sb.append(t.toString() + CRLF);
        StackTraceElement[] se = t.getStackTrace();
        if (se != null) {
            for (int i = 0; i < se.length; i++) {
                if (se[i] != null) {
                    sb.append("\t" + se[i].toString());
                    if (i != se.length - 1) {
                        sb.append(CRLF);
                    }
                }
            }
        }

        return sb.toString();
    }

    public static void getStackTrace(StringBuffer sb, Throwable t, int max) {
        if (t == null)
            return;
        if (max <= 0) {
            max = 10000;
        }
        String CRLF = System.getProperty("line.separator");
        sb.append(t);
        StackTraceElement[] se = t.getStackTrace();
        if (se != null && se.length > 0) {
            for (int i = 0; i < se.length && i < max; i++) {
                sb.append(CRLF);
                sb.append("\t" + se[i]);
            }
            if (max < se.length) {
                sb.append(CRLF + "\t...more lines " + (se.length - max));
            }
        } else {
            sb.append(CRLF + "\tno stack info ");
        }
    }
}