Hi Michal,
We will try on Fedora 23, it has glibc-2.22.
Note that we did three things:
1. Changed semaphore with condition variable;
2. Introduced locking in HandleResponse() and WaitForResponse() (this also enforces memory synchronization between threads);
3. Added while (pStatus == 0) around cond.Wait() to account for spurious wakeups.
My point above was that I suspect 2. to be the major thing here. Let's see ...
Yes, I saw the Ugly hacks and all that goes with them :)
Matevz
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