After testing, the dictionary concept works perfectly! Thanks! With regard to the originating thread retaining a reference to the dictionary, is there a way for the original thread to know when processing has completed on the secondary thread?
I would like my method to be run on a separate thread, but be able to return a value to the caller in the normal fashion. Thanks, John Cassington On Thu, Jan 8, 2009 at 12:21 PM, Graham Cox <graham....@bigpond.com> wrote: > > On 8 Jan 2009, at 12:13 pm, John Cassington wrote: > >> Hi, >> I have a class (JCDataCollector) which I use to collect a large amount >> of data from the users machine. JCDataCollector has a >> publicly-accessible method named >> "collectData:usingFile:shouldLogOutput:". This method is very >> resource-intensive, and I would like to move it onto its own thread. >> >> So far, I have been able to call the method using NSThread's >> "detachNewThreadSelector:toTarget:withObject:" functionality. >> >> However, I cannot find a way to return the data collected in my >> "collectData:usingFile:shouldLogOutput:" method to the object which >> originally detached the thread selector. >> >> Also, my "collectData:usingFile:shouldLogOutput:" method takes >> multiple arguments, but NSThread's >> "detachNewThreadSelector:toTarget:withObject:" only allows one >> parameter to be passed. Short of storing all the parameters in an >> NSArray, is there any way to pass multiple parameters while calling >> "detachNewThreadSelector:toTarget:withObject:"? > > > Dictionaries are very useful for passing parameters, as you can name them > and access them in arbitrary order. > > If you make it mutable, it solves your other problem too - just place the > results in the same dictionary. The originating thread can retain a > reference to it so you have a shared object through which the threads are > able to communicate. > > --Graham > > _______________________________________________ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
