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!wudfext.wudfdevice

  • Articolo

L'estensione !wudfext.wudfdevice visualizza i sistemi di stato Plug and Play (PnP) e risparmio energia per un dispositivo.

!wudfext.wudfdevice pWDFDevice

Parametri

pWDFDevice
Specifica l'indirizzo dell'interfaccia IWDFDevice per visualizzare lo stato di risparmio energia o PnP.

DLL

Wudfext.dll

Informazioni aggiuntive

Per altre informazioni, vedere Debug del framework driver in modalità utente.

Osservazioni:

È possibile usare l'estensione !wudfext.wudfdevice per determinare lo stato di risparmio energia o PnP corrente del dispositivo specificato dal parametro pWDFDevice .

Di seguito è riportato un esempio della visualizzazione !wudfext.wudfdevice :

kd> !wudfdevice 0xf2f80 
Pnp Driver Callbacks:
  IPnpCallback: 0x0
  IPnpCallbackHardware: 0x0
  IPnpSelfManagedIo: 0x0
Pnp State Machine:
  CurrentState:  WdfDevStatePnpStarted
  Pending UMIrp: 0x00000000
    Could not read event queue depth, assuming 8
  Event queue:
    Processed/in-process events:
      PnpEventAddDevice
      PnpEventStartDevice
      PnpEventPwrPolStarted
    Pending events:
    State History:
      WdfDevStatePnpInit
      WdfDevStatePnpInitStarting
      WdfDevStatePnpHardwareAvailable
      WdfDevStatePnpEnableInterfaces
      WdfDevStatePnpStarted
Power State Machine:
  CurrentState:      WdfDevStatePowerD0
  Pending UMIrp:     0x00000000
  IoCallbackFailure: false
    Could not read event queue depth, assuming 8
  Event queue:
    Processed/in-process events:
      PowerImplicitD0
    Pending events:
    State History:
      WdfDevStatePowerStartingCheckDeviceType
      WdfDevStatePowerD0Starting
      WdfDevStatePowerD0StartingConnectInterrupt
      WdfDevStatePowerD0StartingDmaEnable
      WdfDevStatePowerD0StartingStartSelfManagedIo
      WdfDevStatePowerDecideD0State
      WdfDevStatePowerD0
Power Policy State Machine:
  CurrentState             : WdfDevStatePwrPolStartingSucceeded
  PowerPolicyOwner         : false
  PendingSystemPower UMIrp : 0x00000000
  PowerFailed              : false
    Could not read event queue depth, assuming 8
  Event queue:
    Processed/in-process events:
      PwrPolStart
      PwrPolPowerUp
    Pending events:
    State History:
      WdfDevStatePwrPolStarting
      WdfDevStatePwrPolStarted
      WdfDevStatePwrPolStartingSucceeded