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!wdfkd.wdfextendwatchdog

  • Article

The !wdfkd.wdfextendwatchdog extension extends the time-out period (from 10 minutes to 24 hours) of the framework's watchdog timer during power transitions.

!wdfkd.wdfextendwatchdog Handle [Extend]

Parameters

Handle
A handle to a WDFDEVICE-typed object.

Extend
Optional. A value that indicates whether to enable or disable extension of the time-out period. If Extend is 0, extension is disabled, and the time-out period is 10 minutes. If Extend is 1, extension is enabled and the time-out period is 24 hours. The default value is 1.

DLL

Wdfkd.dll

Frameworks

KMDF 1

Additional Information

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

Remarks

The framework starts an internal watchdog timer every time it calls a power policy or power event callback function for a driver that is not power pageable (that is, the DO_POWER_PAGABLE bit is clear). If the callback function causes paging I/O and therefore blocks, the operating system hangs because no paging device is available to service the request.

If the time-out period elapses, the framework issues bug check 0x10D (WDF_VIOLATION). For details, see Bug Check 0x10D.