Adam, an Ada simulation toolkit

Abstract

This paper presents the Adam toolkit for event driven simulations in Ada. Adam (ADA Modelling) is a set of tools to design discrete event driven simulations in an object based manner on a high level of abstraction. It also contains features to couple a number of time-step driven simulations and/or operators to an event driven simulation. Adam consists of a kernel and a number of optional packages containing different facilities. The kernel keeps track of execution order and the simulated time axis, the other packages contain different mechanisms for synchronization, resource management, communication, queuing and a coupling between real and simulated time. Adam is unique in that it allows the designer to use ordinary procedures to describe the data and the behaviour of a simulated object. The fact that the objects are implemented using tasking is completely concealed for the simulation designer.