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comparison src/EDU/oswego/cs/dl/util/concurrent/DefaultChannelCapacity.java @ 0:3dc0c5604566

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Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
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1 /*
2 File: DefaultChannelCapacity.java
3
4 Originally written by Doug Lea and released into the public domain.
5 This may be used for any purposes whatsoever without acknowledgment.
6 Thanks for the assistance and support of Sun Microsystems Labs,
7 and everyone contributing, testing, and using this code.
8
9 History:
10 Date Who What
11 11Jun1998 dl Create public version
12 */
13
14 package EDU.oswego.cs.dl.util.concurrent;
15
16 /**
17 * A utility class to set the default capacity of
18 * BoundedChannel
19 * implementations that otherwise require a capacity argument
20 * @see BoundedChannel
21 * [<a href="http://gee.cs.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/concurrent/intro.html"> Introduction to this package. </a>] <p>
22 **/
23
24 public class DefaultChannelCapacity {
25
26 /** The initial value of the default capacity is 1024 **/
27 public static final int INITIAL_DEFAULT_CAPACITY = 1024;
28
29 /** the current default capacity **/
30 private static final SynchronizedInt defaultCapacity_ =
31 new SynchronizedInt(INITIAL_DEFAULT_CAPACITY);
32
33 /**
34 * Set the default capacity used in
35 * default (no-argument) constructor for BoundedChannels
36 * that otherwise require a capacity argument.
37 * @exception IllegalArgumentException if capacity less or equal to zero
38 */
39 public static void set(int capacity) {
40 if (capacity <= 0) throw new IllegalArgumentException();
41 defaultCapacity_.set(capacity);
42 }
43
44 /**
45 * Get the default capacity used in
46 * default (no-argument) constructor for BoundedChannels
47 * that otherwise require a capacity argument.
48 * Initial value is <code>INITIAL_DEFAULT_CAPACITY</code>
49 * @see #INITIAL_DEFAULT_CAPACITY
50 */
51 public static int get() {
52 return defaultCapacity_.get();
53 }
54 }