AFP 2002: Advanced Functional Programming pp 129-158 | Cite as
JoCaml: A Language for Concurrent Distributed and Mobile Programming
Abstract
In these lecture notes, we give an overview of concurrent, distributed, and mobile programming using JoCaml. JoCaml is an extension of the Objective Caml language. It extends OCaml with support for concurrency and synchronization, the distributed execution of programs, and the dynamic relocation of active program fragments during execution.
The programming model of JoCaml is based on the join calculus. This model is characterized by an explicit notion of locality, a strict adherence to local synchronization, and a natural embedding of functional programming à la ML. Local synchronization means that messages always travel to a set destination, and can interact only after they reach that destination; this is required for an efficient asynchronous implementation. Specifically, the join calculus uses ML’s function bindings and pattern-matching on messages to express local synchronizations.
The lectures and lab sessions illustrate how to use JoCaml to program concurrent and distributed applications in a much higher-level fashion than the traditional threads-and-locks approach.
Keywords
Mobile Agent Chat Room Client Machine Output List Asynchronous MessagePreview
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References
- 1.Abadi, M., Fournet, C., Gonthier, G.: Secure implementation of channel abstractions. Information and Computation (2000)Google Scholar
- 2.Alexander, D.S., Hicks, M.W., Kakkar, P., Keromytis, A.D., Shaw, M., Moore, J.T., Gunter, C.A., Jim, T., Nettles, S.M., Smith, J.M.: The switchware active network implementation. In: The ML Workshop, International Conference on Functional Programming (ICFP). ACM SIGPLAN (September 1998)Google Scholar
- 3.Benton, N., Cardelli, L., Fournet, C.: Modern concurrency abstractions for C#. In: Magnusson, B. (ed.) ECOOP 2002. LNCS, vol. 2374, pp. 415–440. Springer, Heidelberg (2002)CrossRefGoogle Scholar
- 4.Birrell, A.D., Guttag, J.V., Horning, J.J., Levin, R.: Synchronization primitives for a multiprocessor: A formal specification. Research Report 20, DEC SRC (August 1987)Google Scholar
- 5.Cardelli, L., Gordon, A.: Mobile ambients. In: Nivat, M. (ed.) FOSSACS 1998. LNCS, vol. 1378, pp. 140–155. Springer, Heidelberg (1998)CrossRefGoogle Scholar
- 6.Conchon, S., Le Fessant, F.: Jocaml: Mobile agents for objective-caml. In: ASA/MA 1999, pp. 22–29. IEEE Computer Society, Los Alamitos (1999)Google Scholar
- 7.Fournet, C., Gonthier, G.: The reflexive chemical abstract machine and the join-calculus. In: Proceedings of POPL 1996, pp. 372–385. ACM, New York (1996)CrossRefGoogle Scholar
- 8.Fournet, C., Gonthier, G.: The join calculus: a language for distributed mobile programming. In: Barthe, G., Dybjer, P., Pinto, L., Saraiva, J. (eds.) APPSEM 2000. LNCS, vol. 2395, pp. 268–332. Springer, Heidelberg (2002), Also available from http://research.microsoft.com/~fournet CrossRefGoogle Scholar
- 9.Fournet, C., Laneve, C., Maranget, L., Rémy, D.: Implicit typing à la ML for the join-calculus. In: Mazurkiewicz, A., Winkowski, J. (eds.) CONCUR 1997. LNCS, vol. 1243, pp. 196–212. Springer, Heidelberg (1997)Google Scholar
- 10.Fournet, C., Lévy, J.-J., Schmitt, A.: An asynchronous, distributed implementation of mobile ambients. In: Watanabe, O., Hagiya, M., Ito, T., van Leeuwen, J., Mosses, P.D. (eds.) TCS 2000. LNCS, vol. 1872, p. 348. Springer, Heidelberg (2000)CrossRefGoogle Scholar
- 11.Gray, R.S.: Agent tcl: A transportable agent system. In: CIKM Workshop on Intelligent Information Agents, Fourth International Conference on Information and Knowledge Management (CIKM 1995), Baltimore, Maryland (December 1995)Google Scholar
- 12.Hayden, M.: Distributed communication in ML. Technical Report TR97-1652, Cornell University, Computer Science, November 11 (1997)Google Scholar
- 13.Hoare, C.A.R.: Communicating sequential processes. Communications of the ACM 21(8), 666–677 (1978)MATHCrossRefMathSciNetGoogle Scholar
- 14.Johansen, D., Renesse, R.V., Schneider, F.B.: An introduction to the tacoma distributed system version 1.0. Technical Report 95-23, University of TromsO, Norway (June 1995)Google Scholar
- 15.Le Fessant, F.: The JoCAML system prototype (beta 1.08) (1998–2002), Software and documentation available from http://pauillac.inria.fr/jocaml
- 16.Le Fessant, F.: Detecting distributed cycles of garbage in large-scale systems. In: Principles of Distributed Computing (PODC), Rhodes Island (August 2001)Google Scholar
- 17.Le Fessant, F., Maranget, L.: Compiling join-patterns. In: Nestmann, U., Pierce, B.C. (eds.) HLCL 1998: High-Level Concurrent Languages. Electronic Notes in Theoretical Computer Science, vol. 16(3). Elsevier Science Publishers, Amsterdam (1998)Google Scholar
- 18.Le Fessant, F., Piumarta, I., Shapiro, M.: An implementation of complete, asynchronous, distributed garbage collection. In: Conf. on Prog. Lang. Design and Impl. (PLDI), Montreal, Canada. ACM SIGPLAN (June 1998)Google Scholar
- 19.Lea, D.: Concurrent Programming in Java: Design Principles and Patterns, 2nd edn. Addison-Wesley, Reading (1999)Google Scholar
- 20.Leroy, X., et al.: The Objective CAML system 3.05. Software and documentation available from http://caml.inria.fr
- 21.Milner, R.: Communication and Mobile Systems: the π-Calculus. Cambridge University Press, Cambridge (1999)Google Scholar
- 22.Milner, R., Parrow, J., Walker, D.: A calculus of mobile processes, parts I and II. Information and Computation 100, 1–40, 41–77 (1992)MATHCrossRefMathSciNetGoogle Scholar
- 23.Odersky, M.: Functional nets. In: Smolka, G. (ed.) ESOP 2000. LNCS, vol. 1782, pp. 1–25. Springer, Heidelberg (2000)CrossRefGoogle Scholar
- 24.Pierce, B.C., Turner, D.N.: Pict: A programming language based on the pi-calculus. In: Plotkin, G.D., Stirling, C., Tofte, M. (eds.) Proof, Language and Interaction: Essays in Honour of Robin Milner. MIT Press, Cambridge (2000)Google Scholar
- 25.Reppy, J.H.: Concurrent ML: Design, application and semantics. In: Lauer, P.E. (ed.) Functional Programming, Concurrency, Simulation and Automated Reasoning. LNCS, vol. 693, pp. 165–198. Springer, Heidelberg (1993)Google Scholar
- 26.Rouaix, F.: A web navigator with applets in caml. In: Fifth WWW Conference, Paris (May 1996)Google Scholar
- 27.Schmitt, A.: Safe dynamic binding in the join calculus. In: IFIP TCS 2002, Montreal, Canada (2002)Google Scholar
- 28.Schmitt, A., Stefani, J.-B.: The M-calculus: A higher order distributed process calculus. In: Proceeding 30th ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages (POPL 2003). ACM, New York (2003)Google Scholar
- 29.White, J.: Telescript technology: Mobile agents. In: Bradshaw, J. (ed.) Software Agents. AAAI Press/MIT Press (1996)Google Scholar