🚀 go-pugleaf

Rob van Hoboken <RCOPROB@HDETUD2.TUDELFT.NL> writes:
>
>Also, I remember reading about unauthorized inter address space functions
>being announced for MVS/ESA SP 4.3
>

  I believe you're referring to the APPC/MVS Server Facilities support.
This will allow a server address space to manage multiple, concurrent
conversations with client programs using a set of callable services.

  Appended below are excerpts from the announcement letter regarding
APPC/MVS Server Facilities.

-Rob Miller

------------------------------------------------------------------------

  OVERVIEW   HIGHLIGHTS
     o   MVS/ESA SP Version 4 Release 3 enables system growth by providing
         additional APPC/MVS support for application development.  In
         addition, APPC/MVS enhancements simplify resource management by
         enabling the creation of logical unit (LU) 6.2 server programs
         that can manage resources on behalf of many clients.

     DESCRIPTION
     GROWTH ENABLEMENT

            With the addition of APPC/MVS Server Facilities, MVS
     strengthens its support for client/server programming.  APPC/MVS
     Server Facilities provide installations with the high-level language
     callable services needed to write APPC/MVS servers (programs that
     manage multiple LU 6.2 inbound conversations from multiple clients
     concurrently.)

            Because the new callable services are available to
     unauthorized MVS application programs, APPC/MVS Server Facilities
     provide a convenient method for unauthorized programs to establish
     cross-memory communications.

            A client/server application can use APPC/MVS Server Facilities
     to establish multiple, concurrent conversations between a client and
     its server.  With this capability, the application could, for
     example, dedicate one conversation in each direction (sending or
     receiving).