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StorPortQueryTimerMinInterval function (storport.h)

  • Article

StorPortQueryTimerMinInterval queries the minimum timer resolution that is supported by the system clock.

Syntax

ULONG StorPortQueryTimerMinInterval(
  [in]  PVOID  HwDeviceExtension,
  [out] PULONG TimerMinInterval
);

Parameters

[in] HwDeviceExtension

A pointer to the miniport's device extension.

[out] TimerMinInterval

Pointer to a ULONG in which this function writes the minimum time interval, in 100-nanosecond units, between successive ticks of the system clock.

Return value

This function returns one of the following status codes.

Return code Description
STOR_STATUS_SUCCESS The timer minimum interval was successfully queried.
STOR_STATUS_INVALID_PARAMETER A parameter is invalid.
STOR_STATUS_UNSUCCESSFUL Returned for other internal system reasons.

Remarks

A miniport can call this function to query the minimum timer resolution that is supported by the system clock, which can be helpful for implementing I/O polling.

Requirements

Requirement Value
Minimum supported server Windows Server 2022
Header storport.h