NtAlertThreadByThreadIdEx - NtDoc

#ifndef _NTPSAPI_H
//
// Threads
//
#if (PHNT_MODE != PHNT_MODE_KERNEL)
#if (PHNT_VERSION >= PHNT_WIN11)

NTSYSCALLAPI
NTSTATUS
NTAPI
NtAlertThreadByThreadIdEx(
    _In_ HANDLE ThreadId,
    _In_opt_ PRTL_SRWLOCK Lock
    );

#endif
#endif
#endif
View code on GitHub

#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwAlertThreadByThreadIdEx(
    _In_ HANDLE ThreadId,
    _In_opt_ PRTL_SRWLOCK Lock
    );

#endif
View code on GitHub