RtlpHpLfhBucketAddSubsegment

INT64 __fastcall RtlpHpLfhBucketAddSubsegment(INT64 a1, INT64 a2, INT64 a3, CHAR a4){
  INT64 result; 
  INT64 v6; 
  INT64 v9; 
  unsigned __int64 v10; 
  _ETHREAD *CurrentThread; 
  unsigned int SessionId; 
  char v13; 
  int v14; 
  bool v15; 
  __int64 v16; 
  unsigned __int64 v17; 
  __int64 v18; 
  int v19; 
  result = *(unsigned __int16 *)(a3 + 34);
  v6 = a3;
  if( *(_WORD *)(a3 + 32) != (_WORD)result )
  {
    v9 = a2 + 16;
    v10 = RtlpHpAcquireLockExclusive((INT64 *)(a2 + 16), *(unsigned __int8 *)(a1 + 57));
    RtlpHpLfhSubsegmentSetOwner(v6, a2);
    if( *(_WORD *)(v6 + 32) == *(_WORD *)(v6 + 34) )
      *(_QWORD *)(v6 + 16) = 0i64;
    else
      v6 = (INT64)RtlpHpLfhOwnerMoveSubsegment(a2, (INT64 *)v6, 0i64);
    if( *(_BYTE *)(a1 + 57) )
    {
      ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)(a2 + 16));
      result = (unsigned int)KiIrqlFlags;
      __writecr8(v10);
    }
    else
    {
      if( (_InterlockedExchangeAdd64((volatile signed __int64 *)v9, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
        ExfTryToWakePushLock((volatile INT64 *)(a2 + 16));
      v19 = 0;
      CurrentThread = (_ETHREAD *)KeGetCurrentThread();
      if( (unsigned int)MiGetSystemRegionType(a2 + 16) == 1 )
        SessionId = MmGetSessionIdEx(*((_QWORD *)CurrentThread + 23));
      else
        SessionId = -1;
      --*((_WORD *)CurrentThread + 243);
      v13 = ++*((_BYTE *)CurrentThread + 794);
      v14 = (*((char *)CurrentThread + 792) | *((char *)CurrentThread + 870)) ^ 0x3F;
      while( 1 )
      {
        v15 = !_BitScanReverse((unsigned int *)&v16, v14);
        if( v15 )
          break;
        v17 = *((_QWORD *)CurrentThread + 100) + 96 * v16;
        v14 &= ~(1 << v16);
        if( (*(_BYTE *)(v17 + 26) & 1) != 0
          && (*(_DWORD *)(v17 + 32) & 1) == 0
          && (*(_QWORD *)(v17 + 32) & 0x7FFFFFFFFFFFFFFCi64) == (v9 & 0x7FFFFFFFFFFFFFFCi64)
          && *(_DWORD *)(v17 + 40) == SessionId )
        {
          *(_BYTE *)(v17 + 26) &= ~1u;
          if( *(_QWORD *)(v17 + 32) )
          {
            if( v17 )
            {
              *(_BYTE *)(v17 + 32) |= 2u;
              if( *(__int64 *)(v17 + 32) < 0 )
                KiAbEntryRemoveFromTree(v17);
              v19 = *(_DWORD *)(v17 + 88) & 0x1FFFF;
              *(_DWORD *)(v17 + 88) &= 0xFFFE0000;
              *(_BYTE *)(v17 + 25) &= ~1u;
              *(_QWORD *)(v17 + 32) = 0i64;
              v18 = (__int64)(v17 - *((_QWORD *)CurrentThread + 100)) / 96;
              if( v13 == 1 )
                *((_BYTE *)CurrentThread + 792) |= 1 << v18;
              else
                _InterlockedOr8((volatile signed __int8 *)CurrentThread + 870, 1 << v18);
              goto LABEL_26;
            }
            break;
          }
        }
      }
      if( (*((_DWORD *)CurrentThread + 30) & 0x10000) == 0 )
        KeBugCheckEx(0x162u, (ULONG_PTR)CurrentThread, a2 + 16, SessionId, 0i64);
LABEL_26:
      --*((_BYTE *)CurrentThread + 794);
      KiAbThreadRemoveBoosts((ULONG_PTR)CurrentThread, a2 + 16, (unsigned int *)&v19);
      v15 = (*((_WORD *)CurrentThread + 243))++ == 0xFFFF;
      if( v15 && *((_ETHREAD **)CurrentThread + 19) != (_ETHREAD *)((char *)CurrentThread + 152) )
        KiCheckForKernelApcDelivery();
      result = KiLeaveGuardedRegionUnsafe((__int64)KeGetCurrentThread());
    }
  }
  if( v6 )
    return RtlpHpLfhSubsegmentFree(a1, v6, a2, a4 & 1);
  return result;
}

Referenced by: