Hi Andriy, On Wed, Dec 2, 2020 at 11:34 PM Andriy Gapon <a...@freebsd.org> wrote: > > On 03/12/2020 01:20, Conrad Meyer wrote: > > Rand(3) is explicitly unsafe to use from concurrent threads without some > > external serialization, even after initialization. I’d suggest using a > > different > > API. > > thank you! > Just want to check, unsafe in terms of bogus results (with respect to > randomness) or unsafe as in may crash?
Well, unsafe in that it's a data race, which is formally undefined behavior in C (if I understand correctly). So anything could happen, including a crash. In practice, you would probably see something more like the former (bogus results, e.g., multiple calls returning the same number because the state wasn't updated atomically, or something like that) rather than a crash. Best, Conrad _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
