Compartilhar via

!wudfext.wudfdevice

  • Artigo

A extensão !wudfext.wudfdevice exibe os sistemas de estado PnP (Plug and Play) e de gerenciamento de energia de um dispositivo.

!wudfext.wudfdevice pWDFDevice

Parâmetros

pWDFDevice
Especifica o endereço da interface IWDFDevice sobre a qual exibir o estado de gerenciamento de energia ou PnP.

DLL

Wudfext.dll

Informações Adicionais

Para obter mais informações, consulte Depuração da Estrutura de Driver do Modo de Usuário.

Comentários

Você pode usar a extensão !wudfext.wudfdevice para determinar o estado atual gerenciamento de energia ou PnP do dispositivo especificado pelo parâmetro pWDFDevice.

Veja a seguir um exemplo da exibição de !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