Accelerator Manual (G06.24+, H06.03+)

Glossary
Accelerator Manual—527303-002
Glossary-3
nonexact point.
nonexact point. A location in an accelerated program that is not a memory-exact point. At
nonexact points, the TNS program state cannot be mapped directly from TNS/R to
TNS machine locations.
NonStop Open System Services (OSS). An application program interface (API) to the HP
NonStop operating system and associated tools and utilities. See “Open System
Services” for a more complete definition.
object file. A file generated by a compiler or Binder that contains machine instructions and
other information needed to construct the executable code spaces and initial data for a
process. The file may be a complete program that is ready for immediate execution, or
it may be incomplete and require binding with other object files before execution.
open system. A system with interfaces that conform to international computing standards
and therefore appear the same regardless of the system’s manufacturer. For example,
the OSS environment on HP systems conforms to international standards such as
ISO/IEC IS 9945-1:1990 (ANSI/IEEE Std. 1003.1-1990, also known as POSIX.1),
national standards such as FIPS 151-2, and portions of industry specifications such as
the X/Open Portability Guide Version 4 (XPG4).
Open System Services (OSS). An open system environment available for interactive or
programmatic use with the HP NonStop operating system. Processes that run in the
OSS environment use the OSS application program interface; interactive users of the
OSS environment use the OSS shell for their command interpreter. Contrast with
“Guardian.”
OSS. See “Open System Services (OSS).”
OSS environment. The Open System Services (OSS) API, tools, and utilities.
page. A unit of virtual storage. See “disk page” and “memory page.”
pathname. The string of characters that uniquely identifies a file within its file system. A
pathname can be either relative or absolute. See also ISO/IEC IS 9945-1:1990
(ANSI/IEEE Std. 1003.1-1990 or POSIX.1), Clause 2.2.2.57.
POSIX. The Portable Operating System Interface, as defined by the Institute of Electrical
and Electronics Engineers and the American National Standards Institute. Each POSIX
interface is separately defined in a numbered ANSI/IEEE standard or draft standard.
The application program interface, known as POSIX.1, has become ISO/IEC IS 9945-
1: 1990.
ProcDebug. An Accelerator option that directs the Accelerator to perform optimization
across statement boundaries. This option typically produces faster-executing code
than the StmtDebug option, but debugging the program might be more difficult because
it might not be possible to set a breakpoint at some statement boundaries. ProcDebug
is the Accelerator default. Contrast with “StmtDebug.”
process. An instance of execution of a program.