NonStop S-Series Server Description Manual (G06.24+)

Glossary
HP NonStop S-Series Server Description Manual—520331-003
Glossary-94
shared run-time library (SRL)
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. 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.
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).
signal. The method by which an environment notifies a process of an event. Signals are
used to notify a process when an error that is not related to input or output has
occurred. See also Open System Services (OSS) signal.
signal delivery. The time when Open System Services (OSS) takes the action appropriate
for a specific process and a specific signal.
signal generation. The time when an event occurs that causes a signal for a process.
signal handler. A function or procedure that is executed when a specific signal is delivered
to a specific process.
Signaling System Number 7 (SS7). The protocol used in public networks to establish
connections between switches.
signal mask. The set of signals that are currently blocked from delivery to a specific
process.
signal reference grid. A series of conductors, constructed of pure or composite metals (for
example, copper) with good surface conductivity. A superior signal reference grid is
installed on the subfloor of a computer room and connected to the raised-floor
structure to establish constant and equal potential for all equipment in the computer
room that is connected to it.