Selective speculative class-based optimization

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9250865
APP PUB NO 20140325493A1
SERIAL NO

14200239

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Abstract

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A method, apparatus, and/or computer program product performs selective speculative class-based optimization through the use of a type propagation analysis of class. Responsive to a determination that the type of class is not a fixed type, a determination is made as to whether the class is sub-classed. Responsive to a determination the class is not sub-classed, a virtual synthetic property method is created. The virtual synthetic property method is accommodated in an enhanced java virtual machine using a stack frame type. The stack frame type has associated metadata for throwing an exception and an invisibility property. The virtual synthetic property method, along with a virtual guard, is inlined, and a slow path is created. The slow path handles executions of the virtual synthetic property method when sub-classes of the class, which override an implementation of the virtual synthetic property method, are loaded in the future.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Stoodley, Mark G Markham, CA 14 189
Sundaresan, Vijay North York, CA 62 411

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