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TOP Server Thread Safety
Are OPC interfaces on TOP Server thread safe?
TOP Server is a multi-threaded application. The threads created by TOP Server are thread-safe, so client applications do not need to protect access to the interfaces exposed by the server.
A client application that queries for an interface from 1 thread and stores the pointer at global scope will only be able to allow other threads within the process to access this interface if:
- all threads belong to an MTA (multi-threaded apartment), or
- the client marshals the interface between threads implemented as STAs (single-threaded apartments).