Hi all, Can't find an answer to this in the documentation. Does -waitUntilAllOperationsAreFinished pay heed to the -isSuspended state of the NSOperationQueue? I ask because I'm basically following this pattern to collect responses from multiple concurrent background operations in a thread-safe way.:
NSOperationQueue backgroundQueue = /* some long-lived background queue */; NSOperationQueue replyQueue = [NSOperationQueue new]; int totalResult = 0; [replyQueue setSuspended:YES]; for (id foo in myFoos) { [backgroundQueue addOperationWithBlock:^{ int result = DoSomething(); [replyQueue addOperationWithBlock:^{ totalResult += result; }]; }]; } [replyQueue waitUntilAllOperationsAreFinished]; /* all done! */ But this falls apart if -waitUntilAllOperationsAreFinished doesn't look at -isSuspended, and it gets called before the first operation gets enqueued on the replyQueue. I can easily work around this by enqueuing a no-op operation on replyQueue right after calling -setSuspended, but I'd like to know whether there's a definitive answer to this question. --Kyle Sluder _______________________________________________ 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