Java takes flight
| Autor: | Rainer Trummer, Joshua S. Auerbach, Vadakkedathu T. Rajan, Daniel Iercan, David F. Bacon, Christoph M. Kirsch, Harald Roeck |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Java
business.industry Scala Computer science strictfp Real-time computing Embedded Java computer.software_genre Execution time Java concurrency Data flow diagram Software portability Software Real time Java Virtual machine Embedded system business computer Real-time operating system computer.programming_language |
| Zdroj: | LCTES |
| DOI: | 10.1145/1254766.1254775 |
| Popis: | Existing programming methodologies for real-time systems suffer from a low level of abstraction and non-determinism in both the timing and the functional domains. As a result, real-time systems are difficult to test and must be re-certified every time changes are made to either the software or hardware environment. Exotasks are a novel Java programming construct that achievedeterministic timing, even in the presence of other Java threads, and across changes of hardware and software platform. They are deterministic functional data-flow tasks written in Java, combined with an orthogonal scheduling policy based on the logical execution time (LET) model. We have built a quad-rotor model helicopter, the JAviator, which we use as a testbed for this work. We evaluate our implementation of exotasks in IBM's J9 real-time virtual machine using actual flights of the helicopter. Our experiments show that we are able to maintain deterministic behavior in the face of variations in both software load and hardware platform. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|