[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Re: Status of LargeMessages work

[clebert.suconic@jboss.com]

VIII - When sending very large messages, I need to make sure the server will not overuse the remoting connection running out of memory, so I've changed the ServerSide flow control to use a Semaphore instead of a AtomicInt.

As the messages are chunked, I acquire the packetSize (or chunkSize) from availableCredits. When running out of credit ServerConsumerImpl will just wait until more credits are returned from the client.

As far as I can see, in regular cases Semaphore is as performant as AtomicInteger (look at the JDK implementation/ Sync class). And as I needed the chunk to wait on the credits I have made this change for now.

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