An MVS BSAM data set
that provides a data interface between offline and online system
components; records are allocated sequentially; compatible with an
MVS data set in the same module. The data set is allocated and
initialized by MVS and is read and updated by the TPF system.
general file (GF)
A TPF general file is used
to maintain one or more groups of logically related records organized in a
sequential manner. It is created offline under MVS control but is not
compatible with any MVS data structure. There are three types of
general files: loader, pool, and recoup.
general file loader
A program that loads TPF
components to the loader general file in order to initialize or update the
online TPF system. The general file loader is capable of loading a
complete set of the TPF system software (full load) or selected components
(short load), but can only be used to copy items into image number 1.
It consists of an offline and online portion; the offline portion creates
the loader general file, and the online portion copies the contents of that
file into the online modules of the TPF system. See also auxiliary
loader and E-type loader.
general file pack
A disk pack that contains
1, 2, or 3 general file data sets.
general macros
Macros that provide system
services (such as performing alphabetic scans, using tape drives, or handling
input and output), control application programming processing (such as entry
creation), and control events for resource sharing (such as posting and
waiting, queuing and dequeing).
general tapes
Input and output tapes that
allow an application to create consecutive files and scan records according to
logical sequence. These tapes may be concurrently accessed by multiple
ECBs, but are under the exclusive control of only 1 ECB at a given
time.
general use C/C++ language header files
Header
files that are available for general use and include function prototypes and
related definitions that may be used by any application program.
get file storage (GFS)
A macro for
requesting pool file addresses. For TPF collection support (TPFCS), the
TPF system must have GFS pools enabled before the ZBROW and ZOODB commands can
be used. The system must be cycled above CRAS state before pools are
enabled.
GF
General file.
GID
Group ID.
global area
A portion of fixed main storage
for storing critical, frequently accessed data. It provides efficient
access by the control program or applications. Each global area is
assigned a symbolic name, the first character of which is the @
character. Also referred to as globals.
global field
An addressable unit of storage
in the global area.
global macros
The macros that allow
applications to access and update data held in the global area.
global records
Blocks of data in the global
area divided by function (type of data) or by the size of the physical file
record from which the data is loaded into main storage.
globals
In TPF, the concept of shared,
protected, system-allocated main storage designed to permit sharing of values
between application and/or system components. See global
area.
global symbol sharing
Global areas sharing
global information throughout the system while restricting the number of areas
where information resides.
global synchronization
The process where
global fields and records shared by 2 or more active I-streams in a
multiprocessor system (tightly coupled or loosely coupled) are dynamically
maintained to contain the same values.
GMT
Greenwich mean time.
Greenwich mean time (GMT)
The time broadcast
by the National Bureau of Standards. Also known as Universal Time,
Coordinated (UTC).
group
A collection of users who can share
access authorities for protected resources. (OSF)
group code
Term used to define the routing
indicator or address that designates more than 1 receiver or terminal.
group ID (GID)
A nonnegative integer that is
used to identify a group of related users.