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Technical Report: DCC-2000-5
A Concurrent Programming Environment
with Support for Distributed Computations
and Code Mobility
Luís Lopes(1), Álvaro Figueira(1), Fernando
Silva(1)
Vasco Vasconcelos(2)
(1)
{lblopes,arf,fds}@ncc.up.pt / DCC & LIACC, FCUP, University of Porto, Portugal
(2) vv@di.fc.ul.pt / DI, FCUL, University of Lisbon,
Portugal
July 2000
Abstract
We propose a programming model for distributed concurrent systems
with mobile objects in the context of a process calculus. Code
mobility is induced by lexical scoping on names. Objects
and messages migrate towards the site where their prefixes
are lexically bound. Class definitions, on the other hand, are
downloaded from the site where they are defined, and are
instantiated locally upon arrival. We provide several programming
examples to demonstrate the expressiveness of the model. Finally,
based on this model we describe an architecture for a run-time
system supporting concurrent, distributed computations and code
mobility.
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