Threading/monitoring external dll network calls

[Claire]

We've had problems with a third party dll that communicates over a network
and would like to be able to monitor each function call.
We thought of using a 2nd thread which would log an alert if the 1st thread
didn't emerge from a dll function call within a certain timeout period
What I need to know is if all application threads hang while one is stuck or
if they will keep running nevertheless.
thanks

 

[Vadym Stetsyak]

No, all other application threads will not hang.

"to be able to monitor each function call" you can write an lsp
( layred service provider ) to monitor function calls, but this is unmanaged
code and rather tricky.

Another way you can create a mutex object in one thread and wait for it with
timeout.

You can also make a call in the 3-d party dll with the help of async
delegate and then use BeginInvoke/EndInvoke