The Real-Time Specification for Java
The Real-Time Specification for Java
A real-time garbage collector with low overhead and consistent utilization
POPL '03 Proceedings of the 30th ACM SIGPLAN-SIGACT symposium on Principles of programming languages
Proceedings of the 2003 ACM SIGPLAN conference on Language, compiler, and tool for embedded systems
Evaluating Real-Time Java Features and Performance for Real-Time Embedded Systems
RTAS '02 Proceedings of the Eighth IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS'02)
Programming with non-heap memory in the real time specification for Java
OOPSLA '03 Companion of the 18th annual ACM SIGPLAN conference on Object-oriented programming, systems, languages, and applications
Concurrent and Real-Time Programming in Java
Concurrent and Real-Time Programming in Java
Java(TM) Language Specification, The (3rd Edition) (Java (Addison-Wesley))
Java(TM) Language Specification, The (3rd Edition) (Java (Addison-Wesley))
Real-Time Java Platform Programming: Second Edition
Real-Time Java Platform Programming: Second Edition
Ada-Europe'03 Proceedings of the 8th Ada-Europe international conference on Reliable software technologies
Tactics for minimal interference from class loading in real-time Java™
JTRES '07 Proceedings of the 5th international workshop on Java technologies for real-time and embedded systems
Design and implementation of a comprehensive real-time java virtual machine
EMSOFT '07 Proceedings of the 7th ACM & IEEE international conference on Embedded software
Flexible task graphs: a unified restricted thread programming model for java
Proceedings of the 2008 ACM SIGPLAN-SIGBED conference on Languages, compilers, and tools for embedded systems
Low-latency time-portable real-time programming with Exotasks
ACM Transactions on Embedded Computing Systems (TECS)
Client ahead-of-time compiler for embedded Java platforms
Software—Practice & Experience
Reducing startup time of a deterministic virtualizing runtime environment
Proceedings of the 16th International Workshop on Software and Compilers for Embedded Systems
Hybrid compilation and optimization for java-based digital TV platforms
ACM Transactions on Embedded Computing Systems (TECS) - Special Section ESFH'12, ESTIMedia'11 and Regular Papers
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In this paper, we introduce the IBM® WebSphere® Real Time product, which incorporates a virtual machine that is fully Java compliant as well as compliant with the Real-Time Specification for Java (RTSJ). We describe IBM's real-time Java enhancements, particularly in the area of our Testarossa (TR) ahead-of-time (AOT) compiler, our TR just-in-time (JIT) compiler, and our Metronome[2] deterministic Garbage Collector (GC). The main focus of this paper is on the various techniques employed by the TR compilers to optimize and regulate the performance of code running in a real-time Java environment through a simple Java source code example. Through the example, we highlight the additional checks required to provide a conformant RTSJ implementation as well as the performance issues with ahead-of-time code generation and the overheads required to support Metronome. We show how these checks are implemented in a production JVM, and then report the cost of the real-time changes in practice for the example as well as the SPECjvm98 benchmark suite, SPECjbb2000, and SPECjbb2005.