First check the docs for the CGImage APIs to see what their thread-safety is like. I'm guessing you may need to create a new context for each different thread you use them in. That's relevant because if the operation queue allows operations to run in parallel, they're each effectively on a different thread.
Also make sure that if you share mutable data structures between the operations (you mentioned an array) that all access to those is properly synchronized. Using an @synchronized block is an easy way to do that. —Jens _______________________________________________ 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
