TS/MP Pathsend and Server Programming Manual (G06.24+, H06.03+)

Glossary
NonStop TS/MP Pathsend and Server Programming Manual–132500
Glossary-19
primary process
primary process. The currently active process of a process pair in the Guardian environment.
See also backup process and process pair.
process. (1) A unique execution of a program in the Guardian environment. (2) An entity in
the OSS environment consisting of an address space, a single thread of control that
executes within that address space, and the system resources required by that thread of
control. See also process type.
process identification number (PIN). An unsigned integer that identifies a process within a
processor module in a Tandem NonStop system.
process management. The act of configuring, creating, and initializing processes; the
monitoring and stopping of processes; and the recovery of failed processes. The
PATHMON process provides process management functions for OLTP applications on
Tandem NonStop systems.
process pair. A fault-tolerant arrangement of processes in the Guardian environment,
whereby two processes in separate processors share the same name and execute identical
code. One process functions as the primary process and the other functions as the
backup process. The two processes are kept in sync through checkpoint messages sent
from the primary to the backup process. If the primary process fails, the backup process
is notified that it is now the primary, and it resumes the application work from the last
valid checkpoint message.
process type. An attribute of a server class indicating whether the server processes in that
server class are Guardian processes or OSS processes. See also process.
program file. An executable object file. See also object file.
PROGRAM object. A template for creating and starting temporary TERM objects. See also
temporary TERM object.
pseudocode file. A file containing compiled code that is interpreted by software instead of
being executed by the hardware. The SCREEN COBOL compiler produces pseudocode
to be interpreted by the TCP. See also object file.
pseudo Pathsend procedure. In the Extended General Device Support (GDSX) software,
one of the TSCODE-supported procedures that have Pathsend procedure counterparts.
pTAL. See Portable Transaction Application Language (pTAL).
reduced instruction-set computing (RISC). A processor architecture based on a relatively
small and simple instruction set, a large number of general-purpose registers, and an
optimized instruction pipeline that supports high-performance instruction execution. See
also complex instruction-set computing (CISC).
relative pathname. An OSS pathname that does not begin with a slash (/) character.
A relative pathname is resolved beginning with the current working directory. See also
OSS pathname, absolute pathname, and current working directory.