Blocking time monitoring in the real-time specification for Java

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Blocking for resource accesses can have a crucial impact on a real-time system's ability to meet its deadlines. In priority-based systems, uncontrolled blocking can lead to potentially unbounded priority inversion. To counteract this, basic priority inheritance and priority ceiling protocols have been defined. However, in large systems, it is still difficult to determine the maximum amount of blocking that a thread can suffer when using these protocols. The Real-Time Specification for Java provides a framework for execution and online feasibility analysis of priority-based systems. In this paper, we investigate possible extensions to this framework to support the measurement and monitoring of blocking times. We implement and evaluate the proposed mechanism within the context of the open source jRate implementation of the RTSJ running on top of the MaRTE OS.
Original languageUndefined/Unknown
Title of host publicationProceedings of the 6th International Workshop on Java Technologies for Real-time and Embedded Systems, JTRES 2008, 24-26 September 2008, Santa Clara, California, USA
EditorsGregory Bollella, C. Douglas Locke
Number of pages9
ISBN (Electronic)978-1-60558-337-2
Publication statusPublished - 2008

Publication series

NameACM International Conference Proceeding Series

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