Object model in operating system for object-oriented computing system with hardware support

Abstract

This research presents an operating system running on top of jHISC Core which is developed in the Electronic Department of City University of Hong Kong. jHISC is a computer system which can enhance the performance, security and flexibility of executing object‐oriented programs in both hardware and software. The jHISC System, the style of executing a program inside it is completely different with the computers currently using. The operating system using in it has the need to redesign and custom make for this band new architecture from ground up. In the operating system structure of jHISC system, the subject of this thesis, a numerous structures are defined including the class, method, field, and exception structure for the jHISC core and for the jHISC operating system. Most of the core coding this operating system are written in Java and translate it into jHISC assembly code. The microkernel such as class loader, object manager, memory manager, and thread manager are provided in the format of jHISC assembly. On the upper layer, such as the framework of jHISC, no translation will be needed before using. The operating system of jHISC also includes the runtime environment for Java, thus the gap between the operating system and virtual machine in jHISC can be lower and increase the performance when running Java programs in it. There are many areas where have to re‐model from existing operating system in this pioneer operating system in order to support the features that jHISC architecture provides.