Root control block for PDSE member and
directory pages.
DIB
A control
block that is used by PDSE processing to represent
a data set. It is the root from which all OPEN DCB information is
stored.
DIRECTORY LOCK
A lock that
is used to serialize the updates to the name and
attribute directories of the PDSE. When this lock is held, it is impossible
to perform any PDSE functions.
FORMATWRITE
LOCK
A lock that is used to serialize the operations that
are associated
with extending a PDSE and formatting space within the PDSE. When the
system holds this lock, it cannot open the PDSE or perform new-member
create functions on it, unless it is already open on the same system.
HASH TABLE
A structure that can
be used to allow for the lookup of various
PDSE control blocks, including DIBs and HL1Bs.
HL1B
A control block that is used by PDSE processing
to represent
the serialization for the PDSE.
LATCH
A serialization object that PDSE processing uses to maintain
the integrity of its control block structures. These latches are not
GRS latches. Other than the V SMS,PDSE|PDSE1commands,
there are no mechanisms that allow you to directly determine or modify
the status of the PDSE latches.
LOCK
The internal mechanism that is used to serialize access to the
PDSE internal structures.
LSD and LADE
Internal PDSE control block which represent the pages which
make up the directory or members of a PDSE.
XCM
The subcomponent of PDSE processing that is responsible for
communicating between systems using the XCF facilities.