On Mon, Nov 4, 2013 at 8:13 AM, Patrick Walton <pcwal...@mozilla.com> wrote:
> On 11/3/13 10:11 PM, Oren Ben-Kiki wrote: > >> At any rate - is this something that makes sense in the Rust view? >> If so, is there a chance of something like that being added (a >> completely separate question :-)? >> > > Two questions: > > (1) In your proposal, do the cross-thread GC pointers have mutable > contents? If so, how do you prevent data races? > There are no cross-task data races because a heap can only be accessed by one task at a time. This is actually tricky. The container of the heap + components can be sent; separate components are not. I admit I'm not 100% sure how to address that. Preventing mutable aliasing requires an extra bit per pointer, but no atomic operations or reference counting. > (2) Why were ARC and RWarc not sufficient? > Because they don't allow cycles.
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