To be abundantly clear, no I/O should be happening (or is, to my knowledge) on the main thread when you use XHR. The limitation today is that various Necko state operations (e.g. opening a channel) can only happen on the main thread. But that doesn't mean that we are doing I/O there.
- Kyle On Jul 18, 2015 4:43 AM, "David Rajchenbach-Teller" <dtel...@mozilla.com> wrote: > Would any such reimplementation have an effect on the ability to execute > XHR/Fetch I/O off the main thread? I haven't checked if this has any > consequence in practice, but the idea that all my XHR calls are executed > on the main thread is one of the many things in the architecture of > Firefox that don't help me sleep well at night. > > Cheers, > David > > > On 17/07/15 22:24, Jonas Sicking wrote: > > I don't think the problem here is coming up with an architecture, but > > rather having time to implement it. I think many of the specs you > > mention would be a lot easier if we implemented the "Hooks for > > security policies" proposal from [1]. > > > > There's already work going on for implementing the "New API for > > creating channels", "Security Flags" and "Opening channels" sections > > of [1]. This should be enough to enable channels to know if they have > > a "tainted" response or not. But we would also need to rearchitecture > > all relevant callsites to actually look at that. I would imagine some > > already do, but not all of them. > > > > Referrer policies would require other solutions entirely. > > > > Anyhow, the short of it is that the missing piece here is having the > > time to make these changes. > > > > [1] https://etherpad.mozilla.org/BetterNeckoSecurityHooks > > > -- > David Rajchenbach-Teller, PhD > Performance Team, Mozilla > > > _______________________________________________ > dev-platform mailing list > dev-platform@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-platform > > _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
