Download OpenVMS System Services Reference Manual: GETUTC–Z

System Service Descriptions
$PROCESS_SCAN
Descriptor Field
Definition
Buffer length
Buffer length is specified in a different way for the
two types of item descriptors.
Character string or
reference descriptors:
Item code
Item value
Buffer address
A word containing a
user-supplied integer
specifying the length
(in bytes) of the buffer
from which $PROCESS_
SCAN retrieves a selection
criterion. The length of the
buffer needed depends on
the item code specified in
the item descriptor.
Immediate value
The length of the buffer is
descriptors:
always specified as 0.
A word containing the selection criterion. These
codes are defined by the $PSCANDEF macro.
Each item code is described after this list of
descriptor fields.
A longword containing the actual value of the
selection criterion. When you specify an item code
that is passed by value, $PROCESS_SCAN searches
for the actual value contained in the item list.
See the description of the buffer address field for
information about item codes that are passed by
reference.
A longword containing the user-supplied address
of the buffer from which $PROCESS_SCAN
retrieves information needed by the scan. When
you specify an item code that is passed by reference,
$PROCESS_SCAN uses the address as a pointer
to the actual value. See the description of the item
value field for information about item codes that are
passed by value.
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