NonStop S-Series Hardware Installation and FastPath Guide (G06.25+)

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529443-001
Glossary-101
set-user-ID program
set-user-ID program. In the Open System Services (OSS) environment, a program file that
has the S_ISUID bit set in its file mode.
shadow. The processor used to check the results of the master processor on a processor
board.
shared memory. An interprocess communication mechanism that allows two or more
processes to share a given region of memory.
Shared Millicode Library. An intrinsic library containing privileged or TNS-derived millicode
routines used by many native-compiled programs and by emulated TNS programs.
This library includes efficient string-move operations, TNS floating-point emulation, and
various privileged-only operations. These routines are mode independent. They
comply with native calling conventions but can be directly invoked from any mode
without changing execution modes.
shared run-time library (SRL). A collection of procedures whose code and data can be
loaded and executed only at a specific assigned virtual memory address (the same
address in all processes). SRLs use direct addressing and do not have run-time
resolution of links to and from the main program and other independent libraries.
Contrast with dynamic-link library (DLL). See also TNS shared run-time library (TNS
SRL) and TNS/R native shared run-time library (TNS/R native SRL).
shell. (1) In the Open System Services (OSS) environment, a program that interprets
sequences of text input as commands. A shell can operate on an input stream, or it
can interactively prompt and read commands from a terminal. (2) An envelope of code
that provides a convenient way to call a procedure in another execution environment.
See also TNS to native-mode access shell.
shell generator. A software tool that, given a procedure interface definition coded in pTAL
for a native-mode library procedure, produces a custom shell routine to provide access
from TNS object code to that native-mode procedure. See also TNS to native-mode
access shell.
shell map. An address table created by the HP NonStop™ operating system that contains
the entry point addresses of all available TNS to native-mode access shells. See also
TNS to native-mode access shell.
shielded twisted pair (STP). A transmission medium consisting of two twisted conductors
with a foil or braid shield. Contrast with unshielded twisted pair (UTP).
shutdown file. A file invoked by the local operator or by another shutdown file that contains
commands to shut down system devices, communications lines, and system and
application software. Contrast with startup file.
SID. See system image disk (SID) or source ServerNet ID (SID).