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The MmQuerySystemSize routine returns an estimate of the amount of memory in the system.
Syntax
MM_SYSTEMSIZE MmQuerySystemSize();
Return value
MmQuerySystemSize returns one of MmSmallSystem, MmMediumSystem, or MmLargeSystem.
Remarks
This routine can be called during driver initialization to determine how much memory it is practical to allocate for an internal buffer.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 2000. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | Any level |