Mercurial > hg > blitz_stable
view src/EDU/oswego/cs/dl/util/concurrent/ReaderPreferenceReadWriteLock.java @ 5:7b6200980805
Pull system dependent properties out into build.properties, and allow users to override these properties with a user.properties file.
author | dbrosius@mebigfatguy.com |
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date | Thu, 14 May 2009 11:10:34 -0400 |
parents | 3dc0c5604566 |
children |
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/* File: ReaderPreferenceReadWriteLock.java Originally written by Doug Lea and released into the public domain. This may be used for any purposes whatsoever without acknowledgment. Thanks for the assistance and support of Sun Microsystems Labs, and everyone contributing, testing, and using this code. History: Date Who What 11Jun1998 dl Create public version */ package EDU.oswego.cs.dl.util.concurrent; /** * A ReadWriteLock that prefers waiting readers over * waiting writers when there is contention. The range of applicability * of this class is very limited. In the majority of situations, * writer preference locks provide more reasonable semantics. * * <p>[<a href="http://gee.cs.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/concurrent/intro.html"> Introduction to this package. </a>] **/ public class ReaderPreferenceReadWriteLock extends WriterPreferenceReadWriteLock { protected boolean allowReader() { return activeWriter_ == null; } }