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1   /*
2    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
3    * The software in this package is published under the terms of the CPAL v1.0
4    * license, a copy of which has been included with this distribution in the
5    * LICENSE.txt file.
6    */
7   package org.mule.util.queue;
8   
9   /**
10   * <code>Queue</code> TODO
11   */
12  public interface Queue
13  {
14  
15      /**
16       * Returns the number of elements in this queue.
17       */
18      int size();
19  
20      /**
21       * Puts a new object in this queue and wait if necessary.
22       * 
23       * @param o the object to put
24       */
25      void put(Object o) throws InterruptedException;
26  
27      /**
28       * Blocks and retrieves an object from this queue.
29       * 
30       * @return an object.
31       */
32      Object take() throws InterruptedException;
33  
34      void untake(Object item) throws InterruptedException;
35  
36      Object peek() throws InterruptedException;
37  
38      Object poll(long timeout) throws InterruptedException;
39  
40      boolean offer(Object o, long timeout) throws InterruptedException;
41  
42      String getName();
43  }