CcBoostLowPriorityWorkerThread

VOID __fastcall CcBoostLowPriorityWorkerThread(_SHARED_CACHE_MAP *SharedCacheMap){
  __int64 v1; 
  _FILE_OBJECT *v2; 
  UINT64 p_BeyondLastByte1; 
  char v5; 
  _ETHREAD *CurrentThread; 
  unsigned int SessionId; 
  char v8; 
  int v9; 
  bool v10; 
  __int64 v11; 
  unsigned __int64 v12; 
  int v13; 
  unsigned int v14; 
  __int64 v15; 
  KSPIN_LOCK *v16; 
  _FILE_OBJECT *FileObject; 
  int v18; 
  v2 = (_FILE_OBJECT *)v1;
  if( v1 && !*(_DWORD *)(v1 + 4) )
    KeBugCheckEx(0x34u, 0x517ui64, 0xFFFFFFFFC0000420ui64, 0i64, 0i64);
  p_BeyondLastByte1 = (UINT64)&SharedCacheMap[1].PrivateCacheMap.BeyondLastByte1;
  ExAcquirePushLockExclusiveEx((UINT64)&SharedCacheMap[1].PrivateCacheMap.BeyondLastByte1, 0i64);
  if( *(_QWORD *)&SharedCacheMap[1].PrivateCacheMap.NodeTypeCode
    && (int)PsGetIoPriorityThread((__int64)KeGetCurrentThread()) > 0
    && (!v2 || v2 == SharedCacheMap[1].PrivateCacheMap.FileObject) )
  {
    IoBoostThreadIoPriority(v16, 2, 0);
    SharedCacheMap[1].PrivateCacheMap.FileOffset1.LowPart = KeSetPriorityThread(
                                                              *(PKTHREAD *)&SharedCacheMap[1].PrivateCacheMap.NodeTypeCode,
                                                              13);
    FileObject = SharedCacheMap[1].PrivateCacheMap.FileObject;
    if( !*(_DWORD *)(&FileObject->Size + 1) )
      KeBugCheckEx(0x34u, 0x544ui64, 0xFFFFFFFFC0000420ui64, 0i64, 0i64);
    if( (FileObject->Event.Header.LockNV & 0x20000000) == 0 )
    {
      PsBoostThreadIoEx(*(_QWORD *)&SharedCacheMap[1].PrivateCacheMap.NodeTypeCode, 0, 0, 0i64);
      CcUpdateSharedCacheMapFlag((INT64)SharedCacheMap[1].PrivateCacheMap.FileObject, 0x20000000i64, 1);
    }
  }
  v5 = _InterlockedExchangeAdd64((volatile signed __int64 *)p_BeyondLastByte1, 0xFFFFFFFFFFFFFFFFui64);
  if( (v5 & 2) != 0 && (v5 & 4) == 0 )
    ExfTryToWakePushLock((volatile INT64 *)p_BeyondLastByte1);
  v18 = 0;
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  if( (unsigned int)MiGetSystemRegionType(p_BeyondLastByte1) == 1 )
    SessionId = MmGetSessionIdEx(*((_QWORD *)CurrentThread + 23));
  else
    SessionId = -1;
  --*((_WORD *)CurrentThread + 243);
  v8 = ++*((_BYTE *)CurrentThread + 794);
  v9 = (*((char *)CurrentThread + 792) | *((char *)CurrentThread + 870)) ^ 0x3F;
  while( 1 )
  {
    v10 = !_BitScanReverse((unsigned int *)&v11, v9);
    if( v10 )
      break;
    v12 = *((_QWORD *)CurrentThread + 100) + 96 * v11;
    v9 &= ~(1 << v11);
    if( (*(_BYTE *)(v12 + 26) & 1) != 0
      && (*(_DWORD *)(v12 + 32) & 1) == 0
      && (*(_QWORD *)(v12 + 32) & 0x7FFFFFFFFFFFFFFCi64) == (p_BeyondLastByte1 & 0x7FFFFFFFFFFFFFFCi64)
      && *(_DWORD *)(v12 + 40) == SessionId )
    {
      *(_BYTE *)(v12 + 26) &= ~1u;
      if( *(_QWORD *)(v12 + 32) )
      {
        if( v12 )
        {
          *(_BYTE *)(v12 + 32) |= 2u;
          if( *(__int64 *)(v12 + 32) < 0 )
            KiAbEntryRemoveFromTree(v12);
          v13 = *(_DWORD *)(v12 + 88) & 0x1FFFF;
          v14 = *(_DWORD *)(v12 + 88) & 0xFFFE0000;
          *(_BYTE *)(v12 + 25) &= ~1u;
          v18 = v13;
          *(_DWORD *)(v12 + 88) = v14;
          *(_QWORD *)(v12 + 32) = 0i64;
          v15 = (__int64)(v12 - *((_QWORD *)CurrentThread + 100)) / 96;
          if( v8 == 1 )
            *((_BYTE *)CurrentThread + 792) |= 1 << v15;
          else
            _InterlockedOr8((volatile signed __int8 *)CurrentThread + 870, 1 << v15);
          goto LABEL_19;
        }
        break;
      }
    }
  }
  if( (*((_DWORD *)CurrentThread + 30) & 0x10000) == 0 )
    KeBugCheckEx(0x162u, (ULONG_PTR)CurrentThread, p_BeyondLastByte1, SessionId, 0i64);
LABEL_19:
  --*((_BYTE *)CurrentThread + 794);
  KiAbThreadRemoveBoosts((ULONG_PTR)CurrentThread, p_BeyondLastByte1, (unsigned int *)&v18);
  v10 = (*((_WORD *)CurrentThread + 243))++ == 0xFFFF;
  if( v10 && *((_ETHREAD **)CurrentThread + 19) != (_ETHREAD *)((char *)CurrentThread + 152) )
    KiCheckForKernelApcDelivery();
}

Referenced by: