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include vmm.inc VMMcall _GetSetPageOutCount, <NewCount, flags> |
The _GetSetPageOutCount service either sets or returns the page-out count.
This service is for exclusive use by the virtual page swap device.
NewCount
Specifies the new page-out count. This parameter is used only if the flag parameter is not set to the GSPOC_F_Get value.
flags
Specifies the operation flags. This parameter can be the following value:
| Value | Meaning |
| GSPOC_F_Get | Returns the current value of the page-out count; the NewCount parameter is ignored. If this value is not given, the service sets the value of the page-out count to NewCount. |
All other values are reserved.
The EAX register contains the page-out count if the GSPOC_F_Get value is given. Otherwise, this service has no return value.
This service allows the virtual page swap device to manipulate a memory manager parameter associated with demand paging. This parameter is the page-out ahead count. Whenever a page is paged out to satisfy a page in, the system pages out an additional PageOutCount-1 pages and puts the pages on the free list (if possible).
EAX