Performance rework to eliminate excess memory allocations

[James Powell]

Significant work at using DETT to identify and eliminate memory allocations/copying, using large Arrays (1 million DBL) in messages as a test.

[James Powell]

Major change is to use “Mark as Modifier” in the parent implementations of “Send.vi”, telling compiler we wish to use the incoming Message. This has teh problem of forcing a copy in the Caller, if that wire is branched.

One idea that would improve things is to add a Message output to the “Send.vi” method, so Sends can be chained, rather than branched.

[James Powell]

Major success is to get Event Notifications (by label) to N-1 copies, so zero-copy for one Notification! Combined with the new EventDVRMessenger, this is actor-to-actor zero copy of large data!

[James Powell]

Improving TCP Messengers is harder, as Flattening/Unflattening is copy expensive. Got it down to two copies for each of Flatten and Unflatten. Major problem is that Unflatten node wont work on subArrays.

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[James Powell]

2.0