Design and implementation of multi-threaded object request broker

Abstract

Distributed object-oriented computing model is the next logical step to develop distributed applications. In recent year, several object models have been proposed, such as COM/DCOM, CORBA, and JAVA Bean etc. In CORBA, which is announced by OMG, object request broker is a software bus to connect applications and object components. In addition, multi-threaded programming is a well-known technique to improve the performance of applications. In CORBA environment, clients can invoke the remote objects that are shared. If those objects are single-threaded it will affect the performance of system by the large distributed applications. In this paper we will depict in detail the design and implementation of multi-threaded object request broker based on the CORBA. Our ORE nas implemented atop Windows NT and underlying TCP protocol. Finally, we will compare our system's performance with IONA's Orbix, which is a well-known commercial product, in both one-way and two-way request.