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Leopard Sample Code: Cocoa
The performance of Cocoa applications can be measured, evaluated, and optimized using Apple's developer tools, technologies, and programming interfaces. Developers can fine-tune their applications for high performance using tools such as the Shark code-profiling application, features such as multiprocessing, and APIs such as the one for the vDSP library.
View all Performance Sample Code.
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URL CacheInfo (HTML) (DMG) (ZIP)
Demonstrates resource caching behavior using the Cocoa URL loading system.
 2008-06-05
DerivedProperty (HTML) (DMG) (ZIP)
Illustrates use of Core Data derived properties to make searching against string data more efficient.
 2008-06-04
Worm (HTML) (DMG) (ZIP)
NSView performance demonstration. Uses a periodic timer to get best performance with Coalesced Update feature.
2005-06-01
SharedMemory (HTML) (DMG) (ZIP)
Shows how multiple applications can access the same memory using the Unix shmget system call.
2003-01-14
SimpleThreads (HTML) (DMG) (ZIP)
Uses the Cocoa threading APIs to coordinate multiple preemptively scheduled secondary threads with the non-reentrant Cocoa framework.
 2003-01-14
TrivialThreads (HTML) (DMG) (ZIP)
Uses the Cocoa threading APIs to coordinate a preemptively scheduled secondary thread with the non-reentrant Cocoa framework.
2003-01-14