I have written code that was working on Mac OS 10.1 that was using the addNotification function. When I tried it on 10.2 the same code produced some weird results. My code is an IOService (classA) that is waiting on another (classB) by defining a property into the IORegistry. When classB starts, it writes the regkey and register him-self. The classA addNotification on gIOFirstMatchNotification with a dictionary that contains the regkey. On 10.1 my classA was deblocking only when the classB was registering, but on 10.2 the classA deblock several times event if the classB is not already registered. Here is my code: classA: OSDictionary* pDict = OSDictionary::withCapacity(1); pDict->setObject("regkey", "string"); IONotifier* pNotifier = addNotification(gIOFirstMatchNotification, pDict, classA::NotificationHandler, this); classB: setProperty("regkey", "string"); registerService(); I have also tried with resourceMatching("regkey") instead of using a custom dictionary, and my classA::Notificationhandler is not event deblocking when I start the classB. Can you tell me why this code is not working on 10.2 like on 10.1 ? Is there another way to wait on an IOService based on a custom dictionary or a resource ? Daniel-Olivier Simard, ing. Kernel developer Matrox Electronic Systems Ltd Tel: (514) 822-6000 ext. 7899 Fax: (514) 822-6024 Email: Daniel-Olivier.Simard@matrox.com _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.