KeSetSystemGroupAffinityThread

VOID *__stdcall KeSetSystemGroupAffinityThread(PGROUP_AFFINITY Affinity, PGROUP_AFFINITY PreviousAffinity){
  __int64 Group; 
  char v5; 
  UINT8 CurrentIrql; 
  struct _KPRCB *CurrentPrcb; 
  INT64 CurrentThread; 
  int v9; 
  int v10; 
  int v11; 
  VOID *result; 
  _GROUP_AFFINITY v13; 
  UINT64 SpinCount; 
  _SINGLE_LIST_ENTRY ReadyList; 

  Group = Affinity->Group;
  ReadyList.Next = 0i64;
  v13 = 0i64;
  if( (unsigned __int16)Group >= KeActiveProcessors.Count
    || (KeActiveProcessors.Bitmap[Group] & Affinity->Mask) == 0
    || Affinity->Reserved[0] | (unsigned __int16)(Affinity->Reserved[1] | Affinity->Reserved[2]) )
  {
    v5 = 0;
  }
  else
  {
    v5 = 1;
    Affinity->Mask &= KeActiveProcessors.Bitmap[Affinity->Group];
  }
  CurrentIrql = KeGetCurrentIrql();
  __writecr8(2ui64);
  CurrentPrcb = KeGetCurrentPrcb();
  LODWORD(SpinCount) = 0;
  CurrentThread = (INT64)CurrentPrcb->CurrentThread;
  while( _interlockedbittestandset64((volatile signed __int32 *)(CurrentThread + 64), 0i64) )
  {
    do
      KeYieldProcessorEx(&SpinCount);
    while( *(_QWORD *)(CurrentThread + 64) );
  }
  v9 = *(_DWORD *)(CurrentThread + 116);
  v10 = *(_DWORD *)(CurrentThread + 588);
  if( (v9 & 8) != 0 )
  {
    v13.Group = *(_WORD *)(CurrentThread + 584);
    v13.Mask = *(_QWORD *)(CurrentThread + 576);
  }
  else
  {
    *(_DWORD *)(CurrentThread + 116) = v9 | 8;
  }
  if( v5 )
    KiSetSystemAffinityThread(CurrentPrcb, Affinity, 0x500ui64, &ReadyList);
  v11 = *(_DWORD *)(CurrentThread + 588);
  KiReleaseThreadLockSafe(CurrentThread);
  if( (xmmword_140CFB490 & 0x8000000) != 0 )
    EtwTraceIdealProcessor(CurrentThread, 0x546u, v10, v11);
  KiProcessDeferredReadyList(CurrentPrcb, &ReadyList, CurrentIrql);
  if( PreviousAffinity )
    *PreviousAffinity = v13;
  return result;
}

Referenced by: