/*

   Derby - Class org.apache.derby.impl.drda.memCheck

   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.

 */

package org.apache.derby.impl.drda;

import java.util.Date;

public class memCheck extends Thread {
    int delay = 200000;
    boolean stopNow = false;

public memCheck () {}

public  memCheck (int num) {
    delay = num;
}

public void run () {
    while (stopNow == false) {
        try {
            showmem();
            sleep(delay);
        } catch (java.lang.InterruptedException ie) {
            System.out.println("memcheck interrupted");
            stopNow = true;
        }
    }
}

    public static String getMemInfo() {
    Runtime rt = null;
    rt = Runtime.getRuntime();
    rt.gc();
    return "total memory: " 
        + rt.totalMemory()
        + " free: "
        + rt.freeMemory();
    
    }

    public static long totalMemory() {
        Runtime rt = Runtime.getRuntime();
        return rt.totalMemory();
    }

    public static long freeMemory() {
        
        Runtime rt =  Runtime.getRuntime();
        rt.gc();
        return rt.freeMemory();
    }

    public static void showmem() {
    Date d = null;
    d = new Date();
    System.out.println(getMemInfo() + " " + d.toString());

}

public static void main (String argv[]) {
    System.out.println("memCheck starting");
    memCheck mc = new memCheck();
    mc.run();
}
}
