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- README file for cs.arizona.edu:/sr
-
- This directory contains Version 2.1 of the SR programming language and
- the archives of the Info-SR mailing list. Remember to use binary mode
- when transferring compressed files.
-
- info-sr.19xx Archives of the Info-SR mailing list for the given year.
- To subscribe to Info-SR, send your email address to
- info-sr-request@cs.arizona.edu.
-
- sr.tar.Z The SR programming language, including source code,
- documentation in PostScript and troff form, checkout
- programs, and examples.
-
- vs.tar.Z The extended verification suite, needed only if you're
- going to modify the system or port it to a new architecture.
-
- srwin and srlatex, formerly in separate files, are now integrated into the
- sr.tar.Z distribution. Some srwin examples are found in examples/srwin.
-
- For further information about SR, contact sr-project@cs.arizona.edu.
- Please drop us a note at that address if you pick up SR via FTP.
- If you ask us to, we'll put you on the Info-SR mailing list.
-
-
- Here's a description of SR:
-
- SR (Synchronizing Resources) is a language for writing concurrent programs.
- The main language constructs are resources and operations. Resources encapsu-
- late processes and variables they share; operations provide the primary mechan-
- ism for process interaction. SR provides a novel integration of the mechanisms
- for invoking and servicing operations. Consequently, all of local and remote
- procedure call, rendezvous, message passing, dynamic process creation, multi-
- cast, and semaphores are supported. SR also supports shared global variables
- and operations.
-
- SR has been used at a number of universities and labs for course work and
- research projects involving concurrent programming. It has been used in con-
- current programming courses to reinforce concepts with small programming pro-
- jects and with larger projects such as experiments with parallel algorithms,
- replicated databases, distributed simulations, and parts of distributed operat-
- ing systems such as file systems and command interpreters. SR has also been
- used as a tool in several masters theses and doctoral dissertations to conduct
- experiments in parallel and distributed programming and to implement larger sys-
- tems such as a system for mixed language programming, one for distributed imple-
- mentation of graph algorithms, experiments with load balancing algorithms, and
- experiments with upcall program structures.
-
- Documentation
-
- SR is described in The SR Programming Language: Concurrency in Practice, by
- Gregory R. Andrews and Ronald A. Olsson (Benjamin/Cummings, 1993, ISBN 0-8053-
- 0088-0). An overview of version 1 of the language and implementation appeared
- in the January, 1988, issue of ACM TOPLAS (10,1, 51-86). Information about con-
- current programming in general can be found in Concurrent Programming: Princi-
- ples and Practice, by Gregory R. Andrews (Benjamin/Cummings, 1991, ISBN 0-8053-
- 0086-4).
-
- The Implementation
-
- An SR program runs on one or more networked machines of the same architec-
- ture. True multiprocessing is supported on the SGI Iris and Sequent Symmetry;
- multiprocessing is simulated on the other supported platforms, which include
- the Sun, DECstation, HP RISC, and IBM RS/6000. Code is also included for the
- DG AViiON, VAX, and others. To allow additional hands-on experience, three
- preprocessors convert notations for CCRs, monitors, and CSP into SR code.
-
- The latest implementation of SR is version 2.1, released in March, 1993.
- Version 2.1 adds tracing facilities, library support, an X-Windows interface,
- new utilities, performance improvements, bug fixes, and support of Sun's Solaris
- 2.1 operating system.
-
- The INFO-SR Mailing List
-
- Mail sent to info-sr@cs.arizona.edu is automatically forwarded to a list of
- people interested in SR. The mailing list is used for language discussions,
- announcements of new versions, etc. To join, send a request including your e-
- mail address to info-sr-request@cs.arizona.edu or uunet!arizona!sr-project.
-