TS/MP 2.5 Pathsend and Server Programming Manual

HP Tandem
Advanced
Command
Language (TACL)
The user interface to the NonStop Kernel in the Guardian environment. The TACL product is both
a command interpreter and a command language.
I/O process In the Guardian environment, a system process to manage input/output devices. Applications
use the Guardian file system to send requests to I/O processes. See also file system.
IDS See intelligent device support (IDS) facility.
ILP32 The C/C++ programming model where int, long, and pointer data types are all 32 bits wide;
also used as the C/C++ 32-bit compiler pragma. See also “LP64” (page 211).
Inspect The HP debugging tool that can be used interactively to examine and modify the execution of
Guardian processes and SCREEN COBOL requestor programs.
Inspect command
terminal
The terminal on which programmers enter commands to Inspect when debugging a SCREEN
COBOL program or a Pathway server.
intelligent device A device such as an automatic teller machine, a point-of-sale device, or a communications line,
or a process such as a Guardian process, that can communicate with the Pathway environment
through the intelligent device support (IDS) facility, the RSC/MP product, or the Pathsend procedure
calls.
intelligent device
support (IDS)
facility
A feature of the TCP that supports access to Pathway server-classes by intelligent devices. This
facility allows SCREEN COBOL requestor programs to interact with external processes that, in
turn, control devices such as personal computers, automated teller machines, and point-of-sale
devices.
intelligent mode An operating mode in which data and messages are sent between an intelligent device and the
Pathway environment. See also conversational mode (definition 1), intelligent device, and
message-oriented requestor.
interactive mode An operating mode in which commands are entered from a terminal keyboard.
interoperability The ability to communicate, execute programs, or transfer data between dissimilar environments.
interoperate To communicate, execute programs, or transfer data between dissimilar environments.
interprocess
communication
(IPC) message
The unit of communication between requestors and servers. An IPC message consists of a request
message and a reply message.
IPC message See interprocess communication (IPC) message.
keyword A word in a command string or programming language that must be spelled and positioned in
a prescribed way, usually to indicate the meaning of an adjacent parameter.
library A set of related files or common files that can be accessed by multiple programs or processes.
linear
expandability
See scalability
link An open of a server process within a server-class. When a link manager—that is, a TCP or
a ACS Subsystem process—sends a request to a PATHMON process for a link to a server
1.
in a specified server-class, the PATHMON process selects a server process in that server-class
(possibly starting a new server process if necessary) and then returns the name of the server
process to the requesting link manager. See also link granting and link manager.
2. To examine, collect, associate together, and modify code and data blocks from one or more
object files to produce a target object file. On NonStop systems, linking for TNS/R native
object files is performed by the nld utility.
link access The actual transfer of data from a requestor to a server process. In the Pathway environment, link
access is provided by TCPs and ACS Subsystem processes. See also link granting.
link granting The process of selecting a particular server process in a server-class to handle a request from a
link manager (TCP or ACS Subsystem process) on behalf of a requestor. In the Pathway
environment, link granting is done by the PATHMON process. See also link and link access.
link management The act of coordinating the sharing of links between requestor or client processes and server
processes.
210 Glossary