[QPID-6768] Avoid unnecessary message payload copy during send (0-8...0-91)

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: qpid-java-6.0
• Component/s: Java Common, JMS AMQP 0-x
• Assignee: Unassigned
• Reporter: Keith Wall
• Created: 04/Oct/15 16:16
• Updated: 02/Oct/19 19:20
• Resolved: 12/Nov/15 00:18

Description

The org.apache.qpid.framing.ContentBody#writePayload(java.io.DataOutput) method (on the client's publish path when using 0-8..0-91) always copies the payload before writing to the DataOutput. The underlying byte buffer is expected to be a heap byte buffer and so will have a backing array, so the copy can be optimised away in this case.