Subscription to standard CTP broken

[jonathonmcmurray]

With the addition of the segmented TP & CTP, the old "standard" TP & CTP are still available for use. However, when using the standard TP & CTP, subscription to the CTP is broken when using TorQ's .sub.subscribe function.

This is due to the fact that the .ps namespace has been overwritten & we no longer create variables such as .u.w which are required by .sub.subscribe when subscribing to a "standard" (i.e. non segmented) TP or CTP. The standard TP loads u.q and uses the .u namespace rather than the .ps namespace, so it works as expected. Possibly CTP should be changed to use .u namespace instead of .ps, but this should be tested to make sure it works as expected.

We should also double check that subscriptions to segmented CTP (with segmented TP also) work as expected.

[pmurphy979]

It looks like switching from .ps to .u might be tricky because we'd need to set loadcommoncode:0b in the CTP to prevent pubsub.q from overwriting .u.pub and .u.sub.

Any required modules would therefore need to be loaded explicitly in the process .q file, like the TP and STP currently do, but then there is code load order issue - unlike the other tickerplant types, the CTP loads handlers/trackservers.q before the process .q file, which requires the .timer.repeat function from the common/timers.q module to be defined.

One workaround would be a new CTP process code directory with a script that loads common/timers.q and any other dependencies, since this directory can be loaded before any handlers by setting loadprocesscode:1b.

Alternatively we could keep using the .ps namespace and define tptype, tablelist, and subdetails in the CTP, which may be a bit neater.