The InsertHeadList routine inserts an entry at the head of a doubly linked list of LIST_ENTRY structures.
- ListHead [in, out]
Pointer to the LIST_ENTRY structure that represents the head of the list.
- Entry [in, out]
Pointer to a LIST_ENTRY structure that represents the entry to be inserted into the list.
InsertHeadList updates ListHead->Flink to point to Entry. It updates Entry->Flink to point to the old first entry in the list, and sets Entry->Blink to ListHead. The Blink field of the original first entry is also updated to point to Entry.
For information about using this routine when implementing a doubly linked list, see Singly and Doubly Linked Lists.
Callers of InsertHeadList can be running at any IRQL. If InsertHeadList is called at IRQL >= DISPATCH_LEVEL, the storage for ListHead and the list entries must be resident.
|Available starting with Windows 2000.|
|Any level (See Remarks section)|
DDI compliance rules
|IoAllocateFree, IoReuseIrp, MarkingQueuedIrps, RemoveLockForward, RemoveLockForward2, RemoveLockForwardDeviceControl, RemoveLockForwardDeviceControl2, RemoveLockForwardDeviceControlInternal, RemoveLockForwardDeviceControlInternal2, RemoveLockForwardRead, RemoveLockForwardRead2, RemoveLockForwardWrite, RemoveLockForwardWrite2, RemoveLockRelease2, RemoveLockReleaseCleanup, RemoveLockReleaseClose, RemoveLockReleaseCreate, RemoveLockReleaseDeviceControl, RemoveLockReleaseInternalDeviceControl, RemoveLockReleasePower, RemoveLockReleaseRead, RemoveLockReleaseShutdown, RemoveLockReleaseSystemControl, RemoveLockReleaseWrite|