#ifndef _NTRTL_H

/**
 * Releases all resources used by a wait object.
 *
 * \param WaitHandle The wait handle.
 * \param CompletionEvent A handle to the event object to be signaled when the wait operation
 * has been unregistered. This parameter can be NULL.
 * \remarks If this parameter is RTL_WAITER_DEREGISTER_WAIT_FOR_COMPLETION, the function waits
 * for all callback functions to complete before returning.
 * \return NTSTATUS Successful or errant status.
 * \sa https://learn.microsoft.com/en-us/windows/win32/sync/unregisterwaitex
 */
NTSYSAPI
NTSTATUS
NTAPI
RtlDeregisterWaitEx(
    _In_ HANDLE WaitHandle,
    _In_opt_ HANDLE CompletionEvent // optional: RTL_WAITER_DEREGISTER_WAIT_FOR_COMPLETION
    );

#endif
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