Kafura, Dennis G.Mukherji, ManibrataLavender, R. Gregory2013-06-192013-06-191992http://hdl.handle.net/10919/19780ACT++ 2.0 is the most recent version of a class library for concurrent programming in C++. The underlying model of concurrent computation is the Actor model. Programs in ACT++ consist of a collection of active objects called actors. Actors execute concurrently and cooperate by sending request and reply messages. An agent, termed the behavior of an actor, is responsible for processing a single request message and for specifying a replacement behavior which processes the next available request message. One of the salient features of ACT++ is its ability to handle the Inheritance Anomaly---the interference between the inheritance mechanism of object-oriented languages and the specification of synchronization constraints in the methods of a class---using the notion of behavior sets. ACT++ has been implemented on the Sequent Symmetry multiprocessor using the PRESTO threads package.application/pdfenIn CopyrightTechnical reportTR-92-45http://eprints.cs.vt.edu/archive/00000325/01/TR-92-45.pdf