NonStop System Glossary

2. An address space, a single thread of control that executes within that address space, and the
system resources required by that thread of control.
process group
In the Open System Services (OSS) environment, 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
In the Open System Services (OSS) environment, the unique identifier representing a process group
during its lifetime.
process group leader
In the Open System Services (OSS) environment, the process that has the process group ID of its
process group as its OSS process ID.
process group lifetime
In the Open System Services (OSS) environment, 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
In the Guardian environment, the content of a 4-integer array that uniquely identifies a process
during the lifetime of the process. See also PID.
process identification number (PIN)
A number that uniquely identifies a process running in a processor. The same number can exist in
other processors in the same system. See also process ID.
process image file
On a UNIX system, an executable object file. In some Guardian product externals and end-user
publications, an executable object file is referred to as a program file. See also object code file.
process lifetime
The period that begins when an Open System Services (OSS) process is created and ends when
its OSS process ID is returned to the system for reuse.
PROCESS object type
In a subsystem, the object type for the subsystem manager process itself or any generic process.
process-pair list (PPL)
A table that contains one entry for each process or process pair associated with a named resource.
For some devices, a single PPL entry is associated with multiple named resource list (NRL) entries.
For process pairs, a single PPL entry describes both members of the pair.
process snapshot
The contents of a saveabend file or process snapshot file.
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