2 part question on IMS PreLoad
1. IMS PreLoad in MPP regions - COBOL 6.1 RENT REUS modules. How is HEAP/STACK
storage handled?
When is the HEAP/STACK storage for the PreLoad modules allocated and
released?
Module LOADed under MPP startup TCB
A. Storage allocated on LOAD.
Program does not get control or initialize
Storage initialized on 1 execution
Storage not released until MPP terminated
or
B. Storage allocated on 1st application program CALL
Storage released at end of task (end of TCB = end of transaction
thread)
or
?.
I believe scenario A. holds true; would like confirmation.
Brings up question 2.
2. IMS PreLoad in MPP region - Assembler program, REUS, not reentrant/NORENT.
IMS message:
+DFS667I . NON-REENTRENT MODULES HAVE BEEN PRELOADED
When does module get LOADed? Re-LOADed?
A. Module LOADed under MPP startup TCB
? when get DELETEd, re-LOADed?
or
B. Module *not* LOADed under MPP startup TCB;
Module LOADed under transaction/application on CALL as if the module
was not in IMS PreLoad
Seeing indications of both; LOADed on startup but gets reLOADed at times.
Cannot explain why or what should happen.
Thank you for your help folks.
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