Re: [Qemu-devel] Re: [PATCH] Revert "posix-aio-compat: avoid signal race when spawning a thread"

[Jamie Lokier]

malc wrote:
> >     The  use of sigprocmask() is unspecified in a
> >     multithreaded process; see pthread_sigmask(3).
> > 
> > Does it matter?
> 
> One of the patches i've asked you to try today replaced sigprocmask with
> pthread_sigmask, you've said it did nothing. In any case, strictly
> speaking, the code is wrong, so yes it does matter in theory.

It won't matter on a Linux host (they are the same), but
pthread_sigmask should be used because it's Right(tm) and it could
make a difference on some other host.

-- Jamie