Mercurial > hg > blitz_condensed
comparison src/EDU/oswego/cs/dl/util/concurrent/DefaultChannelCapacity.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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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 } |