Asynchronous Event Handling and Real-time Threads in the Real-time Specification for Java

Authors:
A. J. Wellings;A. Burns
Affiliations:
-;-
Venue:
RTAS '02 Proceedings of the Eighth IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS'02)
Year:
2002

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Abstract

This paper discusses the role and implementation of asynchronous event handlers in the Real-time Specification for Java (RTSJ). For non-blocking handlers, an implementation model whereby all heap-using handlers are servic edby a single thread and all no-heap handlers are serviced by another server thread is proposed and schedulability analysis is derived. The model is shown to have bounded priority inversion. General multiple-server models are needed for non-blocking handlers but the support in the RTSJ is criticised as lacking in configurability. A solution is proposed which allow the number of servers to be specified, and the allocation of handlers to servers to be controlled.