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Reference
The performance of Mac OS X applications and hardware devices 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.

A guided introduction to improving performance in Mac OS X software.   Essential information for improving the performance of developer applications.   API references, organized by framework.
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vDSP One-Dimensional Fast Fourier Transforms Reference (HTML) (PDF)
Carbon, Vector Engines 2008-06-09
NSAutoreleasePool Class Reference (HTML) (PDF)
Describes the class used to instantiate pools of objects to be automatically released.
Cocoa 2008-02-08
NSRunLoop Class Reference (HTML) (PDF)
Describes the class whose instances manage input sources.
Cocoa 2008-02-08
Accelerate Reference Update (HTML) (PDF)
Summarizes the symbols added to the Accelerate framework.
Vector Engines 2007-07-18
Xgrid Foundation Reference Update (HTML) (PDF)
Summarizes the symbols added to the Xgrid Foundation framework.
Darwin, Multiprocessing 2007-07-18
vImage Alpha Compositing Reference (HTML) (PDF)
Describes the programming interface for high-performance alpha compositing operations.
Graphics & Imaging 2007-07-12
vImage Conversion Reference (HTML) (PDF)
Describes the programming interface for high performance image conversion operations.
Graphics & Imaging 2007-07-12
vImage Convolution Reference (HTML) (PDF)
Describes the programming interface for high performance image convolution operations.
Graphics & Imaging 2007-07-12
vImage Data Types and Constants Reference (HTML) (PDF)
Describes the data types and constants used by the vImage framework.
Graphics & Imaging 2007-07-12
vImage Decompression Filtering Reference (HTML) (PDF)
Describes the programming interface for decompression filtering operations.
Graphics & Imaging 2007-07-12
vImage Geometry Reference (HTML) (PDF)
Describes the programming interface for high performance geometric operations on images.
Graphics & Imaging 2007-07-12
vImage Histogram Reference (HTML) (PDF)
Describes the programming interface for high performance image histogram operations.
Graphics & Imaging 2007-07-12
vImage Morphology Reference (HTML) (PDF)
Describes the programming interface for high performance morphological operations on images.
Graphics & Imaging 2007-07-12
vImage Reference Collection (HTML) (PDF)
Describes the C programming interface for high-performance image processing.
Graphics & Imaging, Vector Engines 2007-07-12
vImage Transform Reference (HTML) (PDF)
Describes the programming interface for high performance image transform operations.
Graphics & Imaging 2007-07-12
vDSP Complex Vector Conversion Reference (HTML) (PDF)
Carbon, Vector Engines 2007-06-15
vDSP Correlation, Convolution, and Filtering Reference (HTML) (PDF)
Carbon, Vector Engines 2007-06-15
vDSP Matrix Operations Reference (HTML) (PDF)
Carbon, Vector Engines 2007-06-15
vDSP Reference Collection (HTML) (PDF)
Describes the vDSP programming interface defined in the Accelerate framework for digital signal processing.
Vector Engines 2007-06-15
vDSP Single-Vector Operations Reference (HTML) (PDF)
Carbon, Vector Engines 2007-06-15
vDSP Two-Dimensional Fast Fourier Transforms Reference (HTML) (PDF)
Carbon, Vector Engines 2007-06-15
vDSP Vector Scalar Arithmetic Operations Reference (HTML) (PDF)
Carbon, Vector Engines 2007-06-15
vDSP Vector-To-Scalar Operations Reference (HTML) (PDF)
Carbon, Vector Engines 2007-06-15
vDSP Vector-to-Vector Arithmetic Operations Reference (HTML) (PDF)
Carbon, Vector Engines 2007-06-15
NSAssertionHandler Class Reference (HTML) (PDF)
Describes the class whose instances are automatically created to handle false assertions.
Cocoa 2007-02-22
Xsan Reference (HTML) (PDF)
Describes the Xsan API commands.
Storage 2006-05-23
vecLib Framework Reference (HTML) (PDF)
Describes the C API for vector mathematical functions in the vecLib subframework of the Accelerate framework.
Carbon, General, Vector Engines 2005-09-08
vecLib Reference Update (HTML) (PDF)
Summarizes the symbols added to the vecLib framework.
Vector Engines 2005-06-04
Xgrid Foundation Reference (HTML)
Describes the API for monitoring and controlling Xgrid cluster operations.
High Performance Computing 2005-06-04
Debugger Services Reference (HTML) (PDF)
Describes the C API for standard exception-handling and assertion functions used in Carbon applications.
Carbon 2003-01-01
Error Handler Reference (HTML) (PDF)
Describes the C API for a Mac OS 9 service that assumes control when certain low-level system errors occur.
Carbon 2003-01-01