TpSetWait - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
#ifndef _NTTP_H

// winbase:SetThreadpoolWait
NTSYSAPI
VOID
NTAPI
TpSetWait(
    _Inout_ PTP_WAIT Wait,
    _In_opt_ HANDLE Handle,
    _In_opt_ PLARGE_INTEGER Timeout
    );

#endif

View code on GitHub

NtDoc

Sets the wait object, replacing the previous wait object, if any. A worker thread calls the wait object's callback function after the handle becomes signaled or after the specified timeout expires.

Related Win32 API

SetThreadpoolWait maps directly to this function.

See also

Edit description on GitHub