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Int 31H Function 0702H
Mark Page as Demand Paging Candidate
![[0.9]](../0.9.gif)
Notifies the DPMI host that a range of pages may be placed at the head
of the page-out candidate list, forcing these pages to be replaced
ahead of other pages even if the memory has been accessed recently.
The contents of the pages will be preserved.
Call With
AX = 0702H
BX:CX = starting linear address of pages to mark as
paging candidates
SI:DI = size of region to mark (bytes)
Returns
if function successful
Carry flag = clear
if function unsuccessful
Carry flag = set
AX = error code
| 8025H | invalid linear address (range
unallocated) |
Notes
- This function does not force the pages to be swapped to disk
immediately and should be treated as advisory only.
- This function will always succeed on hosts that do not implement
demand-paged virtual memory.
- Partial pages will not be marked.
- This function is useful, for example, if a client knows that a
given piece of data will not be accessed for a long period of time.
That data is ideal for swapping to disk so that the physical memory it
occupies can be used for other purposes.