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package org.openide.util;

import java.util.LinkedList;

/** Queue of objects. When there is no object in the queue the process
* is suspended till some arrives.
* Implementation appears to be LIFO.
*
* @author Jaroslav Tulach
* @deprecated Use {@link java.util.concurrent.BlockingQueue} instead.
*/
@Deprecated
public class Queue extends Object {
    /** Queue enumeration */
    private LinkedList queue = new LinkedList();

    /** Adds new item.
    * @param o object to add
    */
    public synchronized void put(T o) {
        queue.add(o);
        notify();
    }

    /** Gets an object from the queue. If there is no such object the
    * thread is suspended until some object arrives
    *
    * @return object from the queue
    */
    public synchronized T get() {
        for (;;) {
            if (queue.isEmpty()) {
                try {
                    wait();
                } catch (InterruptedException ex) {
                }
            } else {
                break;
            }
        }

        return queue.removeFirst();
    }
}