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EXl
RDJFCB (INVEN"MASTER),MF=L
EX2
RDJFCB MF=(E,EX1)
EX3
OPEN
(, (RDBACK,LEAVE» ,TYPE=J,MF=(E,EX1)
Programming
Notes:
Any
nurober
of
data
control block addresses and
associated options
~ay
be specified
in
the
RDJFCB
macro-instruction.
This
facility
makes
it
possible
to
read job file control blocks in
parallel.
An exit list address must be provided
in
each
data
control
block
specified
by
an RDJFCB macro-instruction.
Each exit list must contain
an active entry that specifiEs the rrain storage address of the area into
which a JFCB is to be placed.
A full discussion of the
exit
list
and
its
use
is
contained
in
Appendix
D of the IBM Systero/360 Operating
System: Control Program Services publication.
The
format
of
the
job
file control block exit list entry is as follows:
r--------------T------------------T------------------------------------,
I
Type of Exit
I
Hexadecimal Code
I
Contents of Exit List Entry
I
I
List Entry
I
(high-order byte)
I
(three low-order bytes)
I
~--------------+------------------+--------------~---------------------i
I
Job file
I
07
I
Address of a 176-tyte area to be
I
I
control block
I
I
provided if the RDJFCB or OPEN
I
I
I
I
(TYPE=J) macro-instruction is used.
I
I
I
I
This area must begin on a full word
I
I
I
I
boundary.
I
L ______________ L __________________
~
____________________________________ J
The
main
storage
area into which the JFCB is read must be at least
176 bytes long.
The data control block
may
be
open
or
closed
when
this
macro-
instruction is executed.
Cautions:
The following errors cause the results indicated:
Error
Result
A DD control statement has not been
provided.
A main storage address has not been
provided.
No action
Abnormal termination of task
L-
and
E-Form
Use:
The
Land E forms of this IT.acro-instruction are
written as described in Appendix
B
of
the
IBM
System/360
Operating
System: control Program Services publication.
132
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