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NF:wdm.ExGetExclusiveWaiterCount

ExGetExclusiveWaiterCount function (wdm.h)

The ExGetExclusiveWaiterCount routine returns the number of waiters on exclusive access to a given resource.

kernel\exgetexclusivewaitercount.htm

kernel

04/30/2018

ExGetExclusiveWaiterCount function

ExGetExclusiveWaiterCount, ExGetExclusiveWaiterCount routine [Kernel-Mode Driver Architecture], k102_bd65d9e8-06bf-4492-88f1-bfd4e46fb29e.xml, kernel.exgetexclusivewaitercount, wdm/ExGetExclusiveWaiterCount

wdm.h

Wdm.h, Ntddk.h, Ntifs.h

Universal

Available starting with Windows 2000.

HwStorPortProhibitedDDIs

NtosKrnl.lib

NtosKrnl.exe

<= DISPATCH_LEVEL

Windows

ExGetExclusiveWaiterCount

wdm/ExGetExclusiveWaiterCount

APIRef

kbSyntax

DllExport

NtosKrnl.exe

ExGetExclusiveWaiterCount

ExGetExclusiveWaiterCount function

-description

The ExGetExclusiveWaiterCount routine returns the number of waiters on exclusive access to a given resource.

-parameters

-param Resource [in]

A pointer to the resource to be tested.

-returns

ExGetExclusiveWaiterCount returns the number of threads currently waiting to acquire the given resource for exclusive access.

-remarks

ExGetExclusiveWaiterCount can be called to get an estimate of how many other threads might be waiting to modify the data protected by a particular resource variable. The caller cannot assume that the returned value remains constant for any particular interval.