A driver's EvtDeviceSelfManagedIoFlush event callback function handles flush activity for the device's self-managed I/O operations.

EVT_WDF_DEVICE_SELF_MANAGED_IO_FLUSH  EvtDeviceSelfManagedIoFlush;

VOID
  EvtDeviceSelfManagedIoFlush (
    IN WDFDEVICE  Device
    )
  {…}

You must declare the function by using the EVT_WDF_DEVICE_SELF_MANAGED_IO_FLUSH type. For more information, see the following Example section.

Parameters

Device

A handle to a framework device object.

Return Value

None

Comments

To register an EvtDeviceSelfManagedIoFlush callback function, a driver must call WdfDeviceInitSetPnpPowerEventCallbacks.

If the driver has registered an EvtDeviceSelfManagedIoFlush callback function, the framework calls it after the device has been removed. The driver should flush (that is, remove) I/O requests that are associated with the device's self-managed I/O operations.

For more information about when the framework calls this callback function, see PnP and Power Management Scenarios.

For more information about drivers that provide this callback function, see Using Self-Managed I/O.

Example

To define an EvtDeviceSelfManagedIoFlush callback function that is named MyDeviceSelfManagedIoFlush, you must first provide a function declaration that SDV and other verification tools require, as follows:

EVT_WDF_DEVICE_SELF_MANAGED_IO_FLUSH  MyDeviceSelfManagedIoFlush;

Then, implement your callback function as follows:

VOID
  MyDeviceSelfManagedIoFlush (
    IN WDFDEVICE  Device
    )
  {…}

Requirements

Versions: The EvtDeviceSelfManagedIoFlush callback function is supported by version 1.0 and later versions of KMDF.

IRQL: PASSIVE_LEVEL

Headers: Defined in Wdfdevice.h, as follows:

typedef VOID
  (EVT_WDF_DEVICE_SELF_MANAGED_IO_FLUSH)(
    IN WDFDEVICE  Device
    );

Include Wdf.h.

See Also

EvtDeviceSelfManagedIoCleanup, EvtDeviceSelfManagedIoInit, EvtDeviceSelfManagedIoRestart, EvtDeviceSelfManagedIoSuspend