How to programmatically get the count of WDF objects in a driver?

NTDEV
1

I wonder if there’s a way to get programmatically (from my diagnostic KMDF driver) the count of WDF objects currently used by another (specific) driver?

Akin to what the following WinDbg command does:

!wdfdriverinfo drvr_name 0x41

and returns as:

WDFDRIVER = 1
WDFDEVICE = 26
WDFQUEUE = 28
WDFWMIPROVIDER = 2
WDFKEY = 2
WDFSTRING = 30
WDFREQUEST = 3
WDFLOOKASIDE = 34
WDFMEMORY = 184
WDFOBJECT = 174
WDFCOLLECTION = 76
FxResourceCm (Internal) = 38
WDFFILEOBJECT = 42
WDFWAITLOCK = 77
WDFSPINLOCK = 115
WDFWORKITEM = 19
WDFINTERRUPT = 19
WDFTIMER = 42
WDFCHILDLIST = 26
WDFWMIINSTANCE = 2
WDFCMRESLIST = 52
FxPkgIo (Internal) = 26
FxPkgFdo (Internal) = 26
FxWmiIrpHandler (Internal) = 26
FxPkgGeneral (Internal) = 26
FxDefaultIrpHandler (Internal) = 26
WDFIOTARGET = 42
2

The counts are entirely private and not exposed through APIs

3

@Doron_Holan said:
The counts are entirely private and not exposed through APIs

Any suggestions on how to access them? (Even if they are private.)

4

No. The extension crawls through internal data structures which were never meant to be externally visible or accessed at runtime (only when the debugger has stopped execution)