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PoEndDeviceBusy function (ntifs.h)

  • Article

The PoEndDeviceBusy routine marks the end of a period of time in which the device is busy.

Syntax

void PoEndDeviceBusy(
  [in, out] PULONG IdlePointer
);

Parameters

[in, out] IdlePointer

A pointer to an idle counter. This is a pointer value that was previously returned by the PoRegisterDeviceForIdleDetection routine. Because PoRegisterDeviceForIdleDetection might return a NULL pointer, the caller must verify that the pointer is non-NULL before it calls PoEndDeviceBusy.

Return value

None

Remarks

The PoStartDeviceBusy and PoEndDeviceBusy routines mark the start and end of a time period in which a device is busy. Each call to PoStartDeviceBusy must be followed by a corresponding call to PoEndDeviceBusy. For more information about how these routines work together, see PoStartDeviceBusy.

Requirements

Requirement Value
Minimum supported client Windows 7
Target Platform Universal
Header ntifs.h (include Wdm.h, Ntddk.h, Ntifs.h)
Library NtosKrnl.lib
DLL NtosKrnl.exe
IRQL Any level

See also

PoRegisterDeviceForIdleDetection

PoStartDeviceBusy