Mercurial > hg > blitz_condensed
comparison src/EDU/oswego/cs/dl/util/concurrent/ReaderPreferenceReadWriteLock.java @ 0:3dc0c5604566
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 |
parents | |
children |
comparison
equal
deleted
inserted
replaced
-1:000000000000 | 0:3dc0c5604566 |
---|---|
1 /* | |
2 File: ReaderPreferenceReadWriteLock.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 ReadWriteLock that prefers waiting readers over | |
18 * waiting writers when there is contention. The range of applicability | |
19 * of this class is very limited. In the majority of situations, | |
20 * writer preference locks provide more reasonable semantics. | |
21 * | |
22 * <p>[<a href="http://gee.cs.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/concurrent/intro.html"> Introduction to this package. </a>] | |
23 **/ | |
24 | |
25 public class ReaderPreferenceReadWriteLock extends WriterPreferenceReadWriteLock { | |
26 protected boolean allowReader() { | |
27 return activeWriter_ == null; | |
28 } | |
29 } | |
30 |