> > From the serialization section of SYS1.MACLIB(IHARB): > > If the task is not running and the local lock is held, the RB > chain will not change. > > > > From APAR PQ81630: > > PQ76702 introduced code for MVSTCB TCB statistics. DFHDSMT calls > > DFHDSAUT for these statistics in routine CREATE_SNAPSHOT. > > DFHDSAUT will loop in routine TCB_SCAN due to not serializing > > the RB chain. A MVS local lock is not enough to serialize the > > RB chain. > > When begs the question: if local lock is not enough, what > serialization should > be used? ;) > > More than likely the RB chain of a dispatchable TCB can be 100% > safely traversed > only while running in that TCB. That is correct.
Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
