xxbja@csduts1.lerc.nasa.gov (Betty Jo Armstead) (02/14/91)
In John Corbin's excellent book "The Art of Distributed Applications: Programming Techniques for Remote Procedure Calls", he hints that one can write multithreaded RPC (tcp not udp) applications. Perhaps I am dense, but I don't quite understand how this is done. In particular I am interested in providing an RPC type server on MVS, using IBM's RPC software. If anyone has any sample applications showing how one handles multithreads/streams using RPC please send me mail xxbja@csduts1.lerc.nasa.gov I will be glad to summarize any responses. By the way any other references on RPC programming would also be appreciated. -- Betty Jo Armstead SVERDRUP Technology Inc. 21000 Brookpark Rd.Ms 142-2 Nasa Lewis Research Center Cleveland Ohio 44135 From: xxbja@csduts1.lerc.nasa.gov
fkittred@bbn.com (Fletcher Kittredge) (02/14/91)
In article <1991Feb13.160045.7947@eagle.lerc.nasa.gov> xxbja@csduts1.lerc.nasa.gov (Betty Jo Armstead) writes: >In John Corbin's excellent book "The Art of Distributed Applications: >Programming Techniques for Remote Procedure Calls", he hints that one >can write multithreaded RPC (tcp not udp) applications. Perhaps I am >dense, but I don't quite understand how this is done. In particular >I am interested in providing an RPC type server on MVS, using >IBM's RPC software. If anyone has any sample applications showing >how one handles multithreads/streams using RPC please send me mail > xxbja@csduts1.lerc.nasa.gov TCP is a protocol definition; support for multi-threaded programs is a operating system service (if the support is worthwhile). There is nothing about TCP that makes it possible to write multi-threaded applications. So your sense of the world is correct. In the distributed applications domain, multi-threaded programs are seen as a beneficial tool. The advantage of multi-threaded programs is that they offer a method of taking inherently asynchroneous processes and allow programmers to treat functional sections as synchroneous. Most current distributed bases provide thread support: mach, amoeba, OSF DCE, etc. Older distributed bases such as Sun O/S or VMS are planning to add (real) thread services in the future. >I will be glad to summarize any responses. By the way any other >references on RPC programming would also be appreciated. There are so many I don't know where to begin. "Distributed Systems" Ed. Sape Mullender, 1989, ACM Press is a start. All of the OSF DEC, Mach, ISIS, Camelot and Amoeba documentation is relevant. Of course, you need the Sun O/S documentation and XDR/RPC sources (available on uunet.u.net). >-- >Betty Jo Armstead SVERDRUP Technology Inc. >21000 Brookpark Rd.Ms 142-2 >Nasa Lewis Research Center >Cleveland Ohio 44135 From: xxbja@csduts1.lerc.nasa.gov Fletcher Kittredge Platforms and Tools Group, BBN Software Products 10 Fawcett Street, Cambridge, MA. 02138 617-873-3465 / fkittred@bbn.com / fkittred@das.harvard.edu