> They have pointers into a heap shared with other tasks in their thread. We'd > have to dig through that heap cloning everything they point to.
Right. I can see the costs, but you have to agree that migrating tasks would be a *great* thing to have. Having shared values become more complicated might be worth it. Unique boxes are one good solution. You also alluded to a task-lifetime trick last week (task X holding onto immutable value Z, and not being allowed to die until task Y, which accesses this value, finishes -- if I understood it correctly). There are probably other hacks that can be applied when sharing big structures. For small ones, copying is a good idea anyway. Of course, this'd also upset our current design of domains and such. I'm not really putting myself behind any new approach at this point, but I think we should definitely be open to anything that would help us avoid costly and awkward I/O multiplexing magic. _______________________________________________ Rust-dev mailing list [email protected] https://mail.mozilla.org/listinfo/rust-dev
