I'd like to see some valid examples of needing to let a thread enter a locked, non-re entrant mutex, then destroying the mutex (which supposedly terminates the thread).I can't think of any good reason to do this. I can't remember precisely what we were arguing about earlier today, but my colleague insists such techniques are needed for point-of-no-return problems (again, forgive me, but I forgot the example he gave me).
Good reasons for destroying mutexes with waiting threads
multithreading;concurrency
I suppose you could make an argument that a mutex that protects a resource should be destroyed and any waiting threads killed if something happens to the resource (e.g. threads waiting to write to a device which goes off-line).  Or possibly in a hard-real-time environment where any tasks which haven't completed during their quantum have to be force-exited.  Kind of a stretch, though, I don't see this being a general-purpose solution.