Commit for Asynchronous Function Module

Question

Halo Experts,
I am working on an Perfomance Optimization project . I am trying to optimize the program by scehduling the individual methods inside the program via asynchronous function modules . By this way I can run this independent methods parallely ( and not sequentailly) . for eg
if the program has
me->m1( ).
me->m2( ).
me->m3( )
if m2 and m3 are independent of each other I schedule them parallely by
me->run_m2_m3_parallely(  ) see the below code
CALL FUNCTION 'ZM2'
    STARTING NEW TASK 'FUNC1'
    DESTINATION 'NONE'
    CALLING ZCLASS=>set_flag_4_m2 ON END OF TASK.
CALL FUNCTION 'ZM3'
    STARTING NEW TASK 'FUNC2'
    DESTINATION 'NONE'
    CALLING ZCLASS=>set_flag_4_m3 ON END OF TASK.
  WAIT UNTIL l_m2_flag = 'X' AND
             l_m3_flag = 'X'.
the FMs ZM2 and ZM3 are updating Z Database tables( say ZM2  and  ZM3 ) . Do I need an explicit commit work for Individual FMs or a single commit work for both the FMs.
How can I roll back both the updates to the database if a dump occurs ?
How should the commit work statement be in this case ?
Regards
Arshad

Answer 1

I think you can solve your issue by using the KEEPING TASK addition.
In your ZCLASS=>set_flag_4_m2 method try this:
METHOD set_flag_4_m2.
  RECEIVE RESULTS FROM FUNCTION 'ZM2 ' KEEPING TASK.
ENDMETHOD.
METHOD set_flag_4_m3.
  RECEIVE RESULTS FROM FUNCTION 'ZM3 ' KEEPING TASK.
ENDMETHOD.
And after your wait you can try to do this:
WAIT UNTIL l_m2_flag = 'X' AND
             l_m3_flag = 'X'.
* In set_func2_commited you must receive results from BAPI_tRANSACTION_COMMIT and set global flag g_func2_commit
CALL FUNCTION 'BAPI_TRANSACTION_COMMIT'
    STARTING NEW TASK 'FUNC2'
    DESTINATION 'NONE'
    CALLING ZCLASS=>set_func2_commited ON END OF TASK.
* In set_func3_commited you must receive results from BAPI_tRANSACTION_COMMIT and set global flag g_func3_commit
CALL FUNCTION 'BAPI_TRANSACTION_COMMIT'
    STARTING NEW TASK 'FUNC3'
    DESTINATION 'NONE'
    CALLING ZCLASS=>set_func3_commited ON END OF TASK.
WAIT UNTIL g_func3_commit EQ 'X' and g_func2_commit EQ 'X'.