Guardian Application Conversion Guide

Glossary
096047 Tandem Computers Incorporated Glossary–5
process string. A process identifier that is suitable to display or print. It contains either
the process name or the CPU, PIN, optionally preceded by the node name.
program. A static set of instruction codes and initialized data (for example, the output
of a compiler or the Binder program) that is not executing. A program usually resides
in a program file on disk. See also “process.”
program file. An executable object file. See “object file.”
reduced instruction-set computing (RISC). A processor architecture based on a relatively
small and simple instruction set, a large number of general-purpose registers, and an
optimized instruction pipeline that supports high-performance instruction execution.
Contrast with “complex instruction-set computing (CISC).”
request. A message formatted and sent to a server by a requester. Requests also
include status messages, such as CPU up and CPU down messages, that are placed on
the process message queue of a process by the operating system. Contrast with
“response.”
requester. The process that initiates interprocess communication by sending a message
to another process (usually a server). Contrast with “server.”
response. A message formatted and sent to a requester by a server, usually to answer a
request. In Distributed Systems Management (DSM), a response is the information or
confirmation supplied by a subsystem in reaction to a command. A response is
typically sent as one or more interprocess messages from a subsystem to a
management application. Contrast with “request.”
RISC. See “reduced instruction-set computing (RISC).”
RISC instructions. Register-oriented 32-bit machine instructions that are directly
executed on TNS/R processors. RISC instructions execute only on TNS/R systems,
not on TNS systems. Contrast with “TNS instructions.”
segment. A unit of storage in memory.
segment ID. An integer that a process uses to identify an extended data segment. It can
also specify the type of extended data segment for a C-series system.
sequential I/O (SIO) procedures. A set of related operating system procedures that are
used for reading and writing sequential files.
server. The process that receives, acts upon, and replies to messages from requesters.
Contrast with “requester.”
simple token. In the System Programmatic Interface (SPI), a token consisting of a token
code and a value of the type indicated in the token code. Although simple token
values can have an internal structure, SPI stores and retrieves those values without
any knowledge of their structure.
SIO procedures. See “sequential I/O (SIO) procedures.”
SPI. See “Subsystem Programmatic Interface (SPI).”