[jboss-jira] [JBoss JIRA] (JGRP-2150) More efficient message adding and draining

[Bela Ban (JIRA)]

Bela Ban created JGRP-2150:
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             Summary: More efficient message adding and draining
                 Key: JGRP-2150
                 URL: https://issues.jboss.org/browse/JGRP-2150
             Project: JGroups
          Issue Type: Enhancement
            Reporter: Bela Ban
            Assignee: Bela Ban


In NAKACK2, UNICAST3 and in MaxOneThreadPerSenderPolicy, we have a pattern where aone or more producers add messages (to a table in NAKACK2 and UNICAST3, or to a MessageBatch in MaxOneThreadPerSenderPolicy) and then only *a single thread* can remove and deliver messages up the stack.

This requires synchronization around (1) determining the thread will be remove messages, (2) adding messages to the table (or batch) and (3) removing messages from the table or batch.

Unit tests DrainTest and MessageBatchDrainTest show how a simple AtomicInteger can be used to do this.



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