Hierarchical real-time garbage collection
Proceedings of the 2007 ACM SIGPLAN/SIGBED conference on Languages, compilers, and tools for embedded systems
Streamflex: high-throughput stream programming in java
Proceedings of the 22nd annual ACM SIGPLAN conference on Object-oriented programming systems and applications
RTZen: highly predictable, real-time java middleware for distributed and embedded systems
Proceedings of the ACM/IFIP/USENIX 2005 International Conference on Middleware
RTZen: highly predictable, real-time java middleware for distributed and embedded systems
Proceedings of the ACM/IFIP/USENIX 2005 International Conference on Middleware
Adaptive load diffusion for stream joins
Proceedings of the ACM/IFIP/USENIX 2005 International Conference on Middleware
Timely provisioning of mobile services in critical pervasive environments
OTM'05 Proceedings of the 2005 Confederated international conference on On the Move to Meaningful Internet Systems - Volume >Part I
An architecture for implementing application interoperation with heterogeneous systems
DAIS'05 Proceedings of the 5th IFIP WG 6.1 international conference on Distributed Applications and Interoperable Systems
Embedded Systems Design
RTZen: highly predictable, real-time java middleware for distributed and embedded systems
Middleware'05 Proceedings of the ACM/IFIP/USENIX 6th international conference on Middleware
Adaptive load diffusion for stream joins
Middleware'05 Proceedings of the ACM/IFIP/USENIX 6th international conference on Middleware
A highly efficient cloud-based architecture for large-scale STB event processing: industry article
Proceedings of the 6th ACM International Conference on Distributed Event-Based Systems
| Hi-index | 0.00 |
End-to-end middleware predictability is essential to support quality of service (QoS) capabilities needed by distributed real-time and embedded (DRE) applications. Real-time CORBA is a middleware standard that allows DRE applications to allocate, schedule, and control the QoS of CPU, memory, and networking resources. Existing Real-time CORBA solutions are implemented in C++, which is generally more complicated and error-prone to program than Java. The Real-Time Specification for Java (RTSJ) provides extensions that enable Java to be used for developing DRE systems. Real-time CORBA does not currently leverage key RTSJ features, such as scoped memory and real-time threads. Thus, integration of Real-Time CORBA and RTSJ is essential to ensure the predictability required for Java-based DRE applications.This paper provides the following contributions to the study of middleware for DRE applications. First we analyze the architecture of ZEN, our implementation of Real-time CORBA, identifying sources for the application of RTSJ features. Second, we describe how RTSJ features, such as scoped memory and real-time threads, can be associated with key ORB components to enhance the predictability of DRE applications using Realtime CORBA and the RTSJ. Third, we perform preliminary qualitative and quantitative analysis of predictability enhancements arising from our application of RTSJ features. Our results show that use of RTSJ features can considerably improve the predictability of DRE applications written using Real-time CORBA and Real-time Java.