Android Open Source - AndroidImageCache Stack Blocking Deque

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License

The source code is released under:

Przemys?aw Jakubczyk Polidea Sp. z o.o. Copyright (c) 2012 All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the follo...

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Java Source Code

package pl.polidea.utils;
/* w w  w .j av  a 2  s.  c  o m*/
import java.util.concurrent.TimeUnit;
import pl.polidea.thridparty.LinkedBlockingDeque;

/**
 * @author Przemys?aw Jakubczyk <przemyslaw.jakubczyk@pl.polidea.pl>
 */
public class StackBlockingDeque extends LinkedBlockingDeque<Runnable> {

    private static final long serialVersionUID = 1635542918696298694L;

    public StackBlockingDeque() {
        super();
    }

    public StackBlockingDeque(int capacity) {
        super(capacity);
    }

    @Override
    public boolean offer(Runnable runnable) {
        if (contains(runnable)) {
            return false;
        }

        if (remainingCapacity() > 0) {
            return super.offer(runnable);
        } else {
            pollFirst();
            return super.offer(runnable);
        }

    }

    @Override
    public Runnable poll() {
        return super.pollLast();
    }

    @Override
    public Runnable take() throws InterruptedException {
        return super.takeLast();
    }

    @Override
    public Runnable poll(long timeout, TimeUnit unit) throws InterruptedException {
        return super.pollLast(timeout, unit);
    }

}

Java Source Code List