[infinispan-issues] [JBoss JIRA] (ISPN-9778) XidImpl implementations can optimize some byte[] allocations

[William Burns (Jira)]

William Burns created ISPN-9778:
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             Summary: XidImpl implementations can optimize some byte[] allocations
                 Key: ISPN-9778
                 URL: https://issues.jboss.org/browse/ISPN-9778
             Project: Infinispan
          Issue Type: Bug
          Components: Transactions
            Reporter: William Burns
             Fix For: 10.0.0.Alpha2


The EmbeddedXid and XidImpl classes show up on profiler for allocating byte[] in a local environment.

1. We should be able to remove the branch byte[] completely as well as its accompanying AtomicInteger and just return an empty byte[] that is cached (ie. Util.EMPTY_BYTE_ARRAY).
2. We can use the byte[] that is provided from the create method directly in XidImpl, which would reduce our allocation to just the 1 byte[24] for embedded or byte[32] for remote.
3. We can return the byte[] directly for getGlobalTransactionId without copying.



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