Title :
Dynamic real-time reconfiguration on a multithreaded Java-microcontroller
Author :
Pfeffer, Matthias ; Ungerer, Theo
Author_Institution :
Inst. for Comput. Sci., Augsburg Univ.
Abstract :
This paper presents an approach for dynamic reconfiguration of an embedded Java system in real-time. A class loader executed as a separate thread on a multithreaded microcontroller loads an updated class concurrent to the real-time application. At an uncritical time the application thread switches from the old to the newly updated class. A switching time of 246 clock cycles is determined by a worst-case execution time analysis and checked by measurements on the system. Although this approach is based on a real-time Java system it can be adapted to other languages without extensive additional costs
Keywords :
Java; computational complexity; embedded systems; microcontrollers; multi-threading; operating system kernels; program compilers; reconfigurable architectures; class loader; embedded Java system; multithreaded Java-microcontroller; operating system kernels; real-time reconfiguration; worst-case execution time analysis; Clocks; Embedded system; Java; Microcontrollers; Multithreading; Processor scheduling; Real time systems; Registers; Switches; Yarn;
Conference_Titel :
Object-Oriented Real-Time Distributed Computing, 2004. Proceedings. Seventh IEEE International Symposium on
Conference_Location :
Vienna
Print_ISBN :
0-7695-2124-X
DOI :
10.1109/ISORC.2004.1300333