1999 International Conference on Parallel Architectures and Compilation Techniques (Cat. No.PR00425) (1999)
Newport Beach, California
Oct. 12, 1999 to Oct. 16, 1999
U. Brinkschulte , Institute of Process Control
C. Krakowski , Institute of Process Control
J. Kreuzinger , University of Karlsruhe
Th. Ungerer , University of Karlsruhe
We propose a multithreaded Java microcontroller--called Komodo microcontroller--with a new hardware event handling mechanism that allows handling of simultaneous overlapping events with hard real-time requirements. Real-time Java threads are used as interrupt service threads (ISTs) instead of interrupt service routines (ISRs). Our proposed Komodo microcontroller supports multiple ISTs with zero-cycle context switching overhead. We evaluate the basic architectural attributes using real-time event parameters of an autonomous guided vehicle. When calculating the maximum vehicle speed without violating the real-time constraints, ISTs dominate ISRs by a speed increase of 28%.
multithreaded microcontroller, java processor, real-time, interrupt service thread, proportional share, thread-oriented event-handling
T. Ungerer, U. Brinkschulte, J. Kreuzinger and C. Krakowski, "A Multithreaded Java Microcontroller for Thread-Oriented Real-Time Event Handling," 1999 International Conference on Parallel Architectures and Compilation Techniques (Cat. No.PR00425)(PACT), Newport Beach, California, 1999, pp. 34.