!wudfext.wudfqueue

The !wudfext.wudfqueue extension displays information about an I/O queue.

Syntax

!wudfext.wudfqueue pWDFQueue

Parameters

pWDFQueue

Specifies the address of the IWDFIoQueue interface to display information about. The !wudfext.wudfdevicequeues extension command determines the address of IWDFIoQueue.

DLL

Comments

The following is an example of the !wudfext.wudfqueue display:

kd> !wudfqueue 0x000f3500
    WdfIoQueueDispatchSequential, POWER MANAGED, WdfIoQueuePowerOn, CAN ACCEPT, CAN DISPATCH
    Number of driver owned requests: 1
      IWDFIoRequest 0x000fa7c0     CWdfIoRequest 0x000fa748
    Number of waiting requests: 199
      IWDFIoRequest 0x000fa908     CWdfIoRequest 0x000fa890
      IWDFIoRequest 0x000faa50     CWdfIoRequest 0x000fa9d8
      IWDFIoRequest 0x000fab98     CWdfIoRequest 0x000fab20
      ...
      IWDFIoRequest 0x000fa530     CWdfIoRequest 0x000fa4b8
      IWDFIoRequest 0x000fa678     CWdfIoRequest 0x000fa600
    Driver's callback interfaces.
      IQueueCallbackRead 0x000f343c
      IQueueCallbackDeviceIoControl 0x000f3438
      IQueueCallbackWrite 0x000f3440

Additional Information

For more information, see User-Mode Driver Framework Debugging.