[Issue 15939] GC.collect causes deadlock in multi-threaded environment

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15939

--- Comment #11 from Martin Nowak <code at dawg.eu> ---
Having the main thread hang while waiting for semaphore posts in the
thread_suspendAll is a good indication that the signal was lost.
Did you have gdb attached while the signal was send? That sometime causes
issues w/ signal delivery.
The setup looks fairly simple (a few threads allocating classes and extending
arrays) to be run for a few days, maybe we can reproduce the problem.

Are there any other reasons for switching to real-time signals?
Which real-time signals are usually not used for other purposes?

--