Open System Services Porting Guide (G06.24+, H06.03+)

Glossary
Open System Services Porting Guide—520573-006
Glossary-10
process group
thread of control that executes within that address space, and the system resources
required by that thread of control.
process group. A set of processes that can signal associated processes. Each process in
an Expand node is a member of a process group; the process group has a process
group ID. A new process becomes a member of the process group of its creator.
process group ID. The unique identifier representing a process group during its lifetime.
process group leader. The process that has the process group ID of its process group as
its OSS process ID.
process group lifetime. The period that begins when a process group is created and ends
when the lifetime of the last remaining process of the group ends.
process ID. See OSS process ID (PID).
process image file. On a UNIX system, an executable object file. In some Guardian
documentation, an executable object file is referred to as a “program file.” See object
file.
process lifetime. The period that begins when a process is created and ends when its OSS
process ID is returned to the system for reuse.
process snapshot. The contents of a saveabend file or process snapshot file.
process snapshot file. (1) A file containing dump information needed by a debugging tool.
In UNIX systems, such files are usually called core files or core dump files.
(2) A file containing the state of a running process at a specific moment, regardless of
whether the process terminated abnormally.
A snapshot file can be created by the Native Inspect SAVE command and the Visual
Inspect CREATE SNAPSHOT command.
See also save file and saveabend file.
reference page. The online or hard-copy version of a file that provides reference
information for a software facility. Some UNIX documentation uses the term man page
instead, referring either to the online delivery mechanism used to display the file
(usually the shell man command) or to the nature of the file as part of a manual.
relative pathname. A pathname that does not begin with a slash (/) character. A relative
pathname is resolved beginning with the current working directory. Contrast with
absolute pathname.
RISC instructions. Register-oriented 32-bit machine instructions that are directly executed
on TNS/R processors. Reduced instruction-set computing (RISC) instructions execute
only on TNS/R systems, not on TNS or TNS/E systems.