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NF:wdm.IoInitializeDpcRequest

IoInitializeDpcRequest function (wdm.h)

The IoInitializeDpcRequest routine registers a driver-supplied DpcForIsr routine.

kernel\ioinitializedpcrequest.htm

kernel

04/30/2018

IoInitializeDpcRequest function

IoInitializeDpcRequest, IoInitializeDpcRequest routine [Kernel-Mode Driver Architecture], k104_6b13de62-4cbe-4902-8c60-67d873873047.xml, kernel.ioinitializedpcrequest, wdm/IoInitializeDpcRequest

wdm.h

Wdm.h, Ntddk.h, Ntifs.h

Desktop

Available starting with Windows 2000.

Any level

Windows

IoInitializeDpcRequest

wdm/IoInitializeDpcRequest

APIRef

kbSyntax

HeaderDef

Wdm.h

IoInitializeDpcRequest

IoInitializeDpcRequest function

-description

The IoInitializeDpcRequest routine registers a driver-supplied DpcForIsr routine.

-parameters

-param DeviceObject [in]

Supplies a pointer to the DEVICE_OBJECT structure representing the physical device that generates interrupts.

-param DpcRoutine [in]

Supplies a pointer to the driver-supplied DpcForIsr routine.

-remarks

IoInitializeDpcRequest associates a driver-supplied DpcForIsr routine with a given device object. The driver's InterruptService routine (ISR) can call IoRequestDpc to queue the DpcForIsr routine. The DpcForIsr routine completes interrupt-driven I/O operations at a lower IRQL than that of the ISR.