[jboss-jira] [JBoss JIRA] (JGRP-2011) Rsp: optimize in-memory size

[Bela Ban (JIRA)]

Bela Ban created JGRP-2011:
------------------------------

             Summary: Rsp: optimize in-memory size
                 Key: JGRP-2011
                 URL: https://issues.jboss.org/browse/JGRP-2011
             Project: JGroups
          Issue Type: Enhancement
            Reporter: Bela Ban
            Assignee: Bela Ban
            Priority: Minor
             Fix For: 3.6.8, 4.0


The in-memory size of {{Rsp}} can be made smaller. Currently, it looks like this:
{noformat}
public class Rsp {
protected boolean             received;
    protected boolean         suspected;
    protected boolean         unreachable;
    protected final Address sender;
    protected T                    retval;
    protected Throwable     exception;
}
{noformat}

Optimizations:
# received, suspected and unreachable can be compacted into a byte field (flags)
# retval and exception can be merged into {{Object value}}
# sender can be removed: {{RspList}} already has the sender

Size of {{Rsp}} is 32 bytes (used JOL to measure)



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