TS/MP 2.5 Pathsend and Server Programming Manual

Glossary
NOTE: This glossary does not include terms for elements of the SCREEN COBOL
language that are also found in standard COBOL. For definitions of such terms, see
standard COBOL texts or to the text of the Pathway/iTS SCREEN COBOL Reference
Manual.
$RECEIVE A special Guardian file name through which a process receives and optionally replies to messages
from other processes by using Guardian procedure calls. This file is analogous to a request queue
defined for a NonStop Tuxedo server.
32-bit address
space
The address space available to users of sign-extended 32-bit addresses. Addresses 0 through
0x7FFFFFFF designate the first 2 gigabytes (GB) of per-process 64-bit address space, starting at
address 0. Addresses 0x80000000 through 0xFFFFFFFF designate the last 2 GB of global 64-bit
address space, starting at address 0xFFFFFFFF 80000000.
32-bit addressable Address space that is accessible using a sign-extended 32-bit address. If something is 32-bit
addressable, then it is also 64-bit addressable. Memory references can be made to any areas
of the address space supported by the NonStop Kernel, subject to access permissions. See also
64-bit addressable.
32-bit loadfile A loadfile that contains only functions of the 32-bit ILP32 data model.
64-bit addressable Address space that is accessible using a 64-bit address. If something is 32-bit addressable, then
it is also 64-bit addressable. Memory references can be made to any areas of the address space
supported by the NonStop Kernel, subject to access permissions. See also 32-bit addressable.
64-bit
addressspace
The address space available to users of 64-bit addresses. The NonStop Kernel supports distinct
mappings for each process, beginning at address 0 and extending to 512 GB. However, 2 GB
beginning at address 0x00000000 80000000 are reserved (never mapped), to avoid ambiguity
with zero-extended 32-bit global addresses. Negative addresses are global—shared by all
processes. Global mappings span the last 512 GB of the address space, beginning at 0xFFFFFF
8000000000 (Some global addresses below that range are used internally by low-level system
code.).
absolute pathname An OSS pathname that begins with a slash (/) character and is resolved beginning with the root
directory. See also OSS pathname, relative pathname, and root directory.
accept operation An operation in which a screen program waits for a response from the terminal and allows data
to be input into the program data area from the terminal.
ACS Subsystem
process
A Guardian process that supports access to servers in the Pathway and NonStop Tuxedo
environments. ACS Subsystem processes act as link managers for requestors and clients that use
the Pathsend procedure calls and other interfaces such as RSC/MP, POET, and the NonStop
Tuxedo ATMI. See also link manager.
advisory message A message displayed in the terminal advisory field to inform the terminal operator of errors
detected during input checking.
API See Application Program Interface (API).
application A complete set of programs or routines that perform a function. See also Pathway application
and NonStop Tuxedo application.
Application
Program Interface
(API)
A set of services (such as programming language functions or procedures) that are called by an
application program to communicate with other software components. For example, an API might
consist of a set of procedure calls that provide a workstation application with a standard interface
for communicating with a NonStop system. Other examples of APIs are the ATMI in BEA Tuxedo
systems and NonStop Tuxedo systems and the Pathsend procedures.
application
terminal
A terminal on which a Pathway application runs. See also command terminal.
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