David: Thanks for your help, this seems like a class that will be perfect for what I am doing! Just a few questions:
1. Is there any concern of thread safety using this class? 2. How can I pass NSFileHandle the file URL of my files? 3. How could I create a method that will take the contents of the file and do something with them? Sorry about the big questions. ;) Sincerely, Pierce Freeman On 4/4/09 9:10 PM, "Dave Keck" <davek...@gmail.com> wrote: >> Yeah, it really helped! I am trying to get the contents of the files in a >> certain directory, so I think that I could probably get away with using a >> timer. > > In this case, the reason your task is taking several seconds to > complete is most likely attributed to the sheer time it takes the read > the contents of the files; that is, most of the time that it takes for > the lengthy-task to complete isn't due to lots of > computation-intensive stuff going on, but rather the age-old slow disk > read. On the list of the 3 best times to use threads, reading large > files from disk would perhaps be one of them... > > I probably should have asked for more information before forming my > last post - for this case in particular, I would use NSFileHandle's > asynchronous file reading mechanisms (which create separate threads > for you, so you don't have to worry about it). Read about NSFileHandle > in the docs, specifically, check out > -readToEndOfFileInBackgroundAndNotify. > > At any rate, to get the contents of every file in a directory, I would > iterate over the files in the directory, creating an NSFileHandle for > each one, and call -readToEndOfFileInBackgroundAndNotify for each. > Depending on how many files you're expecting, you may need to call > -readToEndOfFileInBackgroundAndNotify on a small number of > NSFileHandles, wait until those have finished reading, call it on the > next group of NSFileHandles, etc. > > Note that while you may have escaped from using threads this time > (directly, at least) that's not always going to be the case :). > Threads are indispensable and with the number of cores chips are > sporting these days, will only become more so... > > Good luck! > > David _______________________________________________ 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
