Memory Allocation sequence for Dialog Work Process in Windows and Unix

memory allocation for dialog work process
This is the order in
which the memory space is used. If Roll memory is filled then the
memory in Extended memory is used and soon as shown below. The memory
allocation sequence is same in windows & unix.

Roll Memory (Max size) ztta/roll_first	------->	Extended Memory up to ztta/roll_extension or EM Exhaust	-----------+             |            \|/
			Roll Memory Remainder of ztta/roll_area
			|            \|/
			Heap Memory up to abap/heap_area_dia or HM Exhaust

ztta/roll_first	maximum size of Roll memory
ztta/roll_extension	max size of extended memory
ztta/roll_area	max size of local roll area
abap/heap_area_dia	max size of heap memory