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Viewing report
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JOP: A Java Optimized Processor for Embedded Real-Time Systems. Edition No. 1
VDM Publishing House, June 2008, Pages: 252
This thesis presents a Java processor designed for time-predictable
execution of real-time tasks. JOP (Java Optimized Processor) is the
implementation of the Java virtual machine in hardware. JOP is
intended for applications in embedded real-time systems and the
primary implementation technology is in a field programmable gate
array. This research demonstrates that a hardware implementation of
the Java virtual machine results in a small design for
resource-constrained devices.
Architectural advancements in modern processor designs increase
average performance with features such as pipelines, caches and
branch prediction. However, these features complicate worst-case
execution time (WCET) analysis and lead to very conservative WCET
estimates. This thesis tackles this problem from the architectural
perspective - by introducing a processor architecture in which
simpler and more accurate WCET analysis is more important than
average case performance.
The proposed processor and the Java real-time profile have been used
with success to implement several commercial real-time applications.
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