#ifndef _NTLPCAPI_H
// begin_private

/**
 * The AlpcRegisterCompletionList routine registers an ALPC completion list for a port.
 *
 * \param PortHandle Handle to the ALPC port.
 * \param Buffer Pointer to the memory region for the completion list.
 * \param Size Total size of the buffer.
 * \param ConcurrencyCount Maximum number of concurrent processing threads.
 * \param AttributeFlags Flags defining the behavior of the completion list.
 * \return NTSTATUS Successful or errant status.
 */
NTSYSAPI
NTSTATUS
NTAPI
AlpcRegisterCompletionList(
    _In_ HANDLE PortHandle,
    _Out_ PALPC_COMPLETION_LIST_HEADER Buffer,
    _In_ ULONG Size,
    _In_ ULONG ConcurrencyCount,
    _In_ ULONG AttributeFlags
    );

// end_private
#endif
View code on GitHub