Is there any potential issue to create an instance of Data Module during Unit Initialization?

[wuwuxin 29]

I have a data module that includes HTTPRIO - is there any potential issue to create an instance of that data module during its parent Unit initialization, and destroy the instance during its parent Unit finalization?

[Lars Fosdal 1866]

As long as the RIO is used only by one thread at a time, that would work fine.

 

[Lars Fosdal 1866]

I am curious - why would you not create it when you need it?
I checked our code, and we typically create on demand per thread.

[wuwuxin 29]

1 hour ago, Lars Fosdal said:

I am curious - why would you not create it when you need it?
I checked our code, and we typically create on demand per thread.

Hi @Lars Fosdal  Thank you for the advice.  The web service server I need to access -  has a time out for user session (which simple string is used for SessionID), and I need a separate thread to keep heartbeating the session (by calling a dummy method using the SessionID) to keep it from timeout.  I need to keep the session live for some reason.

[Lars Fosdal 1866]

In that case, I would have created a worker thread (or threads) that have a private RIO, work in, work out queues, and a default heartbeat ping loop method that is called when the work in queue is empty .