![]() ![]() Applications SPOD if they don’t service the event loop for two seconds ^ 'WWDC 2012 – Session 709 – What's New in the File System' (PDF).^ Ars Technica Jaguar review: 'The dreading 'spinning rainbow disc' has an all new look in Jaguar'.^ 'Using the Cursor Utilities (IM: Im)'.^ 'Frozen: How to Force Quit an OS X App Showing a Spinning Beachball of Death – The Mac Observer'.^ 'How to Fix a Spinning Wheel of Death on Mac'.^ 'Troubleshoot the spinning beach ball'. ![]() ^ 'macOS Human Interface Guidelines: Pointers'.^ 'Mini-Tutorial: The dreaded spinning pinwheel Avoiding unresponsiveness/slow-downs in Mac OS X'.^ frequently encountered across Mac users forums as The SPOD.^ often an external AppleCD drive was used.^ NeXT Optical Discs, Photo of the underside, showing the rainbow effect depicted on the icon (a then new type of media that was built into the early NeXT Cubes.). ![]() The most common words or phrases x can be replaced with include: The spinning wait cursor is commonly referred to as the (Spinning) x (of Death/Doom). Problems with the virtual memory system-such as slow paging caused by a spun-down hard disk or disk read-errors-will cause the wait cursor to appear across multiple applications, until the hard disk and virtual memory system recover.Applications thus afflicted rarely recover. Bugs in applications can cause them to stop responding to events for instance, an infinite loop or a deadlock.Another approach is to divide the work into smaller packets and use NSRunLoop or Grand Central Dispatch. However, this greatly increases the application complexity. ![]() Developers may prevent this by using separate threads for lengthy processing, allowing the application's main thread to continue responding to external events. If processing takes long, the application will appear unresponsive. By default, events (and any actions they initiate) are processed sequentially, which works well when each event involves a trivial amount of processing, the spinning wait cursor appearing until the operation is complete. ![]()
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