Replace use of class Valve with standard JDK ReentrantReadWriteLock in class
Topic.java
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Key: AMQ-3703
URL: https://issues.apache.org/jira/browse/AMQ-3703
Project: ActiveMQ
Issue Type: Improvement
Components: Broker
Affects Versions: 5.5.1
Reporter: Timothy Bish
Assignee: Timothy Bish
Priority: Trivial
Fix For: 5.6.0
The Topic class uses an old AMQ class Valve that is essentially a pre JDK 1.5
Read / Write lock. The JDK RW lock is much more efficient than ours using only
a single CAS operation in many cases when multiple readers need access to the
lock as opposed to the Valve class that requires all threads to synchronize and
possibly wait on a monitor.
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