Wang Xiaoge

A component-based reflective middleware approach to context-aware adaptive systems

In ubiquitous computing environment, a middleware abstracting a unified service for various types of applications operating over a static environment is not valid; in particular, ubiquitous applications does not benefit from dynamic reconfiguration and adaptive computing. In this paper, we introduce our reflective middleware platform PURPLE, which is designed and implemented to fit the varying requirement of ubiquitous computing: such as adaptability, configurability, context awareness.

PURPLE: a reflective middleware for pervasive computing

Pervasive computing is one of the hottest research areas in development of information technology. Among the identified key requirements for the software infrastructure of pervasive computing, such as adaptability, configurability, context and environment awareness, we focus the effort of study on the technology of reflection. In this paper, we introduce PURPLE, a reflective middleware platform which is designed and implemented to fit the very requirement of pervasive computing. And a performance analysis is given to evaluate the work.

Design and implementation of an agile kernel component runtime

In this paper, we describe ARMOR, an Agile keRnel coMpOnent Runtime which seeks to greatly enhance operating system reliability and performance at the same time. ARMOR is made up of AKE, Agile Kernel Engine which is implemented in kernel, and system servers which are user processes. In ARMOR, the kernel functions are encapsulated through component and can be loaded both into kernel address space for performance and into system servers user address space for reliability at runtime. ARMOR isolates kernel components through loading them into system servers user address space, where hardware and software prevent them from corrupting the kernel. To prove the feasibility of our approach, we implemented ARMOR in Linux operating system and some experiments are given to evaluate our work.