Question

I have a thread that calls various APIs of a COM interface. Now I want to invoke these functions from another thread. Can you please advise how I can achieve this?
How can I implement the communication between these two threads? If I define a Message queue sort of data structure which is common for these two threads then how do I define a common data structure as the parameters are different for each COM API.

Thanks in advance

Answer 1

You don’t define one common data structure. There is a different data structure for each different function signature. Only common thing between those structures is identifier of the function. In your thread you’ll have giant switch (or std::map) that would translate function identifier to function itself. After that you know how to interpret the rest of the structure. The structures should have POD semantic.