Syntax:
>>-.---.-.----.--MFSYNC-"integer"---------><
+-/-+ +-NO-+
Parameters:
-
integer
- The synchronization value defines the maximum synchronization boundary on which items will by synchronized (based on their size):
| 2 |
will synchronize: 2 byte comp/comp-x/comp-5 sync
pic x(4) comp/comp-x/comp-5 sync
pic x(8) comp/comp-x/comp-5 sync
|
on boundary: 2
2
2
|
| 4 |
will synchronize: 2 byte comp/comp-x/comp-5 sync
pic x(4) comp/comp-x/comp-5 sync
pic x(8) comp/comp-x/comp-5 sync
|
on boundary: 2
4
4
|
| 8 |
will synchronize: 2 byte comp/comp-x/comp-5 sync
pic x(4) comp/comp-x/comp-5 sync
pic x(8) comp/comp-x/comp-5 sync
|
on boundary: 2
4
8
|
Properties:
| Default: |
NOMFSYNC |
| Phase: |
Syntax check |
| $SET: |
Initial |
Dependencies:
If MFSYNC is specified alone (that is, without a qualifier) the effect will be as if MFSYNC"4" was specified.
Comments:
Applying the MFSYNC directive on a compilation unit can improve code generation and execution speed considerably. However, applying MFSYNC to a program that was developed without consideration for the MFSYNC effect on Data Division and record layout could have a detrimental effect on the program’s semantics.