Thanks for your replies. Unfortunately, I can't easily avoid initWithHTML:dataUsingEncoding:documentAttributes: But I can postpone it long enough to move its execution to an other thread (serial dispatch queue). That solves the issue.
Jean On 8 mai 2013, at 21:14, Jens Alfke <j...@mooseyard.com> wrote: > > On May 7, 2013, at 3:52 PM, Ken Thomases <k...@codeweavers.com> wrote: > >> Yes, it can. Under the hood, NSAttributedString is using WebKit for HTML >> rendering. In part that means that, when invoked from a background thread, >> it has to shunt the work to the main thread. But it also means the main >> thread may have to run the run loop during the call. It's a nuisance, but >> it's necessary since HTML can have references to external resources that >> need to be loaded. > > I’ve had trouble with this method in the past, for exactly that reason — you > can get weird reentrancy problems from runloop sources like timers being > invoked while in the middle of the call. (It’s also pretty slow.) > > IMHO it’s best to avoid this method if you can. For example, the last time > this came up all I needed was the plain text, so I wrote a little string > transformer to strip out HTML tags and expand HTML entities. For more > involved work you could use NSXMLParser (with the “tidy” option) to parse the > HTML into a DOM and then walk through that. > > —Jens ----------- Jean Suisse Institut de Chimie Moléculaire de l’Université de Bourgogne (ICMUB) — UMR 6302 _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
