APL2 implementation of cross-system shared variables

ABSTRACT

This paper discusses the requirement for intermachine communication and how this requirement is met with APL2's cross-system shared variables. One problem encountered in the design is the mapping of APL2's cooperative peer-to-peer communication model onto a client server data transport mechanism. Another is the ability of APL2's sharing mechanism to address applications on other machines. The goal of the facility is to provide a high level of communication between applications running on different machines while introducing the minimum language extension.

REFERENCES

• 1: APL2 Version 2 Programming: Language Reference, IBM Corporation, SH21-1061, 1992.
• 2: APL2 General Information, IBM Corporation, SH21-1051, 1992.
• 3: APL2 Programming: System Services Reference, IBM Corporation, SH21-1054, 1992
• 4: TCP/IP Tutorial and Technical Overview, IBM International Technical Support Centers, GG24-3376-01, Raleigh, North Carolina (1990)
• 5: W. Richard Stevens, UNIX network programming, Prentice-Hall, Inc., Upper Saddle River, NJ, 1990
• 6: A. S. Tanenbaum, Computer networks, Prentice-Hall, Inc., Upper Saddle River, NJ, 1988
• 7: IBM Transmission Control Program/Internet Protocol Version 2 for VM: Programmer's Reference, SC31-6084
• 8: IBM Transmission Control Program/Internet Protocol Version 2 for M VS: Programmer's Reference, SC09-1261

INDEX TERMS

Primary Classification:
  D. Software
  D.3 PROGRAMMING LANGUAGES
      D.3.2 Language Classifications

          Nouns: APL

Additional Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.1 Network Architecture and Design
          Subjects: Network communications
          Nouns: Internet

General Terms:
Algorithms, Design, Languages, Standardization