IsListEmpty function (wdm.h)
The IsListEmpty routine indicates whether a doubly linked list of LIST_ENTRY structures is empty.
Syntax
BOOLEAN IsListEmpty(
[in] const LIST_ENTRY *ListHead
);
Parameters
[in] ListHead
Pointer to a LIST_ENTRY structure that represents the head of the list.
Return value
IsListEmpty returns TRUE if there are currently no entries in the list and FALSE otherwise.
Remarks
IsListEmpty returns TRUE if ListHead->Flink refers back to ListHead.
For information about using this routine when implementing a doubly linked list, see Singly and Doubly Linked Lists.
Callers of IsListEmpty can be running at any IRQL. If IsListEmpty is called at IRQL >= DISPATCH_LEVEL, the storage for ListHead must be resident.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 2000. |
| Target Platform | Desktop |
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h, Wudfwdm.h) |
| IRQL | Any level (see Remarks section) |