ExGetExclusiveWaiterCount function (wdm.h)
The ExGetExclusiveWaiterCount routine returns the number of waiters on exclusive access to a given resource.
Syntax
ULONG ExGetExclusiveWaiterCount(
[in] PERESOURCE Resource
);
Parameters
[in] Resource
A pointer to the resource to be tested.
Return value
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.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 2000. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | <= DISPATCH_LEVEL |
| DDI compliance rules | HwStorPortProhibitedDDIs(storport) |
See also
ExAcquireResourceExclusiveLite
ExAcquireSharedStarveExclusive