Java AtomicLong printProgress(final AtomicLong value)

Description

print Progress

License

Apache License

Declaration

public static void printProgress(final AtomicLong value) 

Method Source Code

//package com.java2s;
/*//from   w  w  w. j  a v a  2  s  .co  m
 *  Copyright (c) 2012 Jan Kotek
 *
 *  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.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.locks.LockSupport;

public class Main {
    /** @deprecated */
    public static void printProgress(final AtomicLong value) {
        new Thread("printProgress") {
            {
                setDaemon(true);
            }

            @Override
            public void run() {
                long startValue = value.get();
                long startTime, time = System.currentTimeMillis();
                startTime = time;
                long old = value.get();
                while (true) {
                    time += 1000;
                    while (time > System.currentTimeMillis()) {
                        LockSupport.parkNanos(1000 * 1000); //1ms
                    }

                    long current = value.get();
                    if (current < 0) {
                        System.out.println("Finished, total time: " + (time - startTime) + ", aprox items: " + old);
                        return;
                    }
                    long totalSpeed = 1000 * (current - startValue) / (time - startTime);
                    System.out.print("total: " + current + " - items per last second: " + (current - old)
                            + " - avg items per second: " + totalSpeed + "\r");
                    old = current;
                }

            }
        }.start();
    }
}

Related

1. isAtomicLong(final N number)
2. joinThreads()
3. lock()
4. max(AtomicLong x, long y)
5. nanoTime()
6. randomSeed()
7. removeCustomTime()
8. resetURICounter()
9. runThread(Runnable r)