PfTSetTraceWorkerPriority

NTSTATUS __stdcall PfTSetTraceWorkerPriority(INT64 CpuPriority){
  KPRIORITY v1; 
  _ETHREAD *CurrentThread; 
  KPRIORITY v3; 
  _ETHREAD *v4; 
  unsigned int SessionId; 
  unsigned __int8 v6; 
  int v7; 
  bool v8; 
  __int64 v9; 
  _KLOCK_ENTRY *v10; 
  __int64 v11; 
  UINT64 a3; 

  v1 = CpuPriority;
  if( (unsigned int)CpuPriority > 0x1F )
    return 32;
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  --CurrentThread->Tcb.KernelApcDisable;
  ExAcquirePushLockExclusiveEx((_EX_PUSH_LOCK *)&stru_140C4DB30 + 954, 0i64);
  if( *(&stru_140C4DB30 + 967) )
    v3 = KeSetPriorityThread(*(&stru_140C4DB30 + 967), v1);
  else
    v3 = 33;
  if( (_InterlockedExchangeAdd64((_QWORD *)&stru_140C4DB30 + 954, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
    ExfTryToWakePushLock((_EX_PUSH_LOCK *)&stru_140C4DB30 + 954);
  LODWORD(a3) = 0;
  v4 = (_ETHREAD *)KeGetCurrentThread();
  if( MiGetSystemRegionType((UINT64)&stru_140C4DB30 + 7632) == 1 )
    SessionId = MmGetSessionIdEx(v4->Tcb.ApcState.Process);
  else
    SessionId = -1;
  --v4->Tcb.SpecialApcDisable;
  v6 = ++v4->Tcb.AbAllocationRegionCount;
  v7 = ((char)v4->Tcb.AbEntrySummary | (char)v4->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
  while( 1 )
  {
    v8 = !_BitScanReverse((unsigned int *)&v9, v7);
    if( v8 )
      break;
    v10 = &v4->Tcb.LockEntries[v9];
    v7 &= ~(1 << v9);
    if( (v10->AcquiredByte & 1) != 0
      && (v10->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
      && (v10->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == (((unsigned __int64)&stru_140C4DB30
                                                                                              + 7632) & 0x7FFFFFFFFFFFFFFCi64)
      && v10->LockState.SessionId == SessionId )
    {
      v10->AcquiredByte &= ~1u;
      if( v10->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
      {
        if( v10 )
        {
          v10->CrossThreadReleasableAndBusyByte |= 2u;
          if( v10->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
            KiAbEntryRemoveFromTree(v10);
          LODWORD(a3) = v10->BoostBitmap.AllFields & 0x1FFFF;
          v10->BoostBitmap.AllFields &= 0xFFFE0000;
          v10->ThreadLocalFlags &= ~1u;
          v10->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
          v11 = v10 - v4->Tcb.LockEntries;
          if( v6 == 1 )
            v4->Tcb.AbEntrySummary |= 1 << v11;
          else
            _InterlockedOr8((volatile signed __int8 *)&v4->Tcb.AbOrphanedEntrySummary, 1 << v11);
          goto LABEL_20;
        }
        break;
      }
    }
  }
  if( (*(&v4->Tcb.MiscFlags + 1) & 0x10000) == 0 )
    KeBugCheckEx(0x162u, v4, (char *)&stru_140C4DB30 + 7632, (PVOID)SessionId, 0i64);
LABEL_20:
  --v4->Tcb.AbAllocationRegionCount;
  KiAbThreadRemoveBoosts(&v4->Tcb, (char *)&stru_140C4DB30 + 7632, &a3);
  v8 = v4->Tcb.SpecialApcDisable++ == -1;
  if( v8 && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)v4->Tcb.ApcState.ApcListHead[0].Flink != &v4->Tcb.152 )
    KiCheckForKernelApcDelivery();
  KeLeaveCriticalRegion();
  return v3;
}

Referenced by: