On Jan 18, 2010, at 5:41 PM, Brendan Eich wrote: > On Jan 18, 2010, at 5:20 PM, [email protected] wrote: > >> On Mon, Jan 18, 2010 at 4:54 PM, Brendan Eich <[email protected]> wrote: >>> That's right -- no races, execution still seems single-threaded. Wherefore >>> the special form, although if this line is in a seldom-executed branch you >>> still have the hit of loading B up front. >> >> Right. The optimization in this case is that the runtime could delay >> loading B and, if B is encountered, *block* the currently running >> event loop and fetch B. > > So the spec is that import could nest an event loop? What scripts or event > handlers/timeouts/etc. could run at that point? In general breaking the > run-to-completion execution model means the importing script and its > containing window could be destroyed, a zombie.
It's also horrific in the context of a browser as it's effectively an arbitrary length call blocked on IO. --Oliver > > /be > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
