On Mon, Dec 14, 2015, at 12:19 PM, Greg Parker via swift-dev wrote: > > > On Dec 14, 2015, at 9:47 AM, John McCall via swift-dev > > <swift-dev@swift.org> wrote: > > > >> On Dec 12, 2015, at 7:04 PM, Chris Lattner <clatt...@apple.com> wrote: > >> #3 sounds like a great approach to me. I agree with Kevin that if we keep > >> the object husk approach that any use of a weak pointer that returns nil > >> should drop any reference to a husk. > > > > Spin locks are, unfortunately, illegal on iOS, which does not guarantee > > progress in the face of priority inversion. > > There is a spinlock algorithm that does work (in practice if not in theory), > but it requires a full word of storage instead of a single bit.
Is that what OSSpinLock uses? -Kevin Ballard _______________________________________________ swift-dev mailing list swift-dev@swift.org https://lists.swift.org/mailman/listinfo/swift-dev
