01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.cocoon.components.thread;
18:
19: /**
20: * Efficient array-based bounded buffer class. Adapted from CPJ, chapter 8,
21: * which describes design.
22: *
23: * <p>
24: * [<a
25: * href="http://gee.cs.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/concurrent/intro.html">
26: * Introduction to this package. </a>]
27: * </p>
28: *
29: * <p></p>
30: */
31: public class BoundedQueue extends
32: EDU.oswego.cs.dl.util.concurrent.BoundedBuffer implements Queue {
33: //~ Constructors -----------------------------------------------------------
34:
35: /**
36: * Create a buffer with the current default capacity
37: */
38: public BoundedQueue() {
39: super ();
40: }
41:
42: /**
43: * Create a BoundedQueue with the given capacity.
44: *
45: * @param capacity The capacity
46: *
47: * @exception IllegalArgumentException if capacity less or equal to zero
48: */
49: public BoundedQueue(int capacity) throws IllegalArgumentException {
50: super (capacity);
51: }
52:
53: //~ Methods ----------------------------------------------------------------
54:
55: /**
56: * DOCUMENT ME!
57: *
58: * @return current size of queue.
59: */
60: public int getQueueSize() {
61: return usedSlots_;
62: }
63: }
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