Ok apparently everyone agrees on the fact that I should just launch the tasks on the main thread, and avoid using waitUntilExit (using only the notifications to know when a task completes...)! :)
Well, it makes sense I guess haha! I'm pretty sure I tried it before but the problem was that my progress label was not being updated... so I assumed that my UI was locked up... it turns out using [progressLabel display]; did the trick (I guess it's forcing it to re-draw?) Thanks to everyone for the quick replies! Jean-Nicolas Jolivet On 2010-03-31, at 2:21 PM, Jean-Nicolas Jolivet wrote: > I have to run a bunch of NSTasks and I'm not sure to proceed considering I > want to be able to update the UI when a task is completed, and I want the > process to be as fast as possible (obviously)... > > So far I tried a couple of ideas but they all had their problems: > > - I tried launching the tasks on the main thread but it locks up my UI and I > can't update my progress bar... > > - If I try to dispatch each task in the background using GCD > (dispatch_group_async and the global queue), it works just fine (and it's > really fast too!), but I can't use NSTask's waitUntilExit (I know NSTask is > not thread safe but I'm not sharing any NSTasks between threads...however, > using waitUntilExit makes the app crash...badly...)... so basically I can use > GCD to dispatch the NSTasks but then there's no way to be notified when the > task are completed....(obviously I'm not receiving the > NSTaskDidTerminateNotification notification either since each tasks are > launched in a different thread) > > > So I guess my question is... if using threads prevents me from using > waitUntilExit... and launching them on the main thread locks up my UI... is > there anything I am missing? > Any help would be appreciated > > Jean-Nicolas Jolivet _______________________________________________ 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
