Entwurf und implementierung von cssa - beschreibung der sprache, des compilers und des mehrrechnersimulationssystems : Teil D: CSSA-Programmbeispiele

Abstract

CSSA (Computing System for Societies of Agents) is an interactive programming language for asynchronous multiprocessor systems. Computations are done by concurrently working sequential modules, called agents which implement objects of data and control abstractions. Communication is done by passing messages to acquainted agents. The receiving agent creates an instance of an operation capability referred to in the message. Since agents can be created during the computation and acquaintances can be transmitted in messages the heterarchical agent-net may dynamically change. The language described in volume B of the CSSA-documentation has been successfully implemented for a multiprocessor simulation system running on a general purpose computer. This system allows the execution of CSSA-applications on a wide range of simulated multicomputer configurations. The use of the system is described in volume C. This manual describes the use of the CSSA-system consisting of the compiler, the multiprocessor-simulation system, the commandinterpreter and the interactive debugging-system. All systemcomponents are integrated in-a menue-driven program-development system. This volume contains examples of CSSA-programs which have been used to test the compiler and the simulation system. In the first part examples of typical CSSA-applications including short problem descriptions and detailed execution-protocols are given. The second part contains test programs used for debugging. For each group of language constructs there is usually a program containing all static semantic errors that can occur in this context; one or more further programs test and demonstrate the function of the constructs in execution as well as the possible runtime-errors.