GEM: Global Event Management in CAD Frameworks

Wayne Allen
MCC
3500 West Balcones Center Drive
Austin, Texas 78759-6509
wa@mcc.com

Abstract

This paper describes an event-driven communication facility called GEM, a
component of the MCC CAD Framework. GEM manages communications between producers
and consumers of events, providing a generalized reactive mechanism which can be
used to synchronize and document the various stages of the electronic design
process. GEM uses an event class hierarchy to provide a wide range of
communication semantics, and supports a hierarchical event scoping mechanism for
controlling communication domains. The GEM system supports dynamic, loosely
coupled communication with a robust, multi-server architecture.