RtlpHpLfhBucketAddSubsegment

NTSTATUS __stdcall RtlpHpLfhBucketAddSubsegment(INT64 a1, INT64 a2, INT64 r8_0, CHAR a4){
  NTSTATUS result; 
  INT64 v6; 
  INT64 v9; 
  unsigned __int64 v10; 
  _ETHREAD *CurrentThread; 
  unsigned int SessionId; 
  unsigned __int8 v13; 
  int v14; 
  bool v15; 
  __int64 v16; 
  _KLOCK_ENTRY *v17; 
  __int64 v18; 
  UINT64 a3; 

  result = *(unsigned __int16 *)(r8_0 + 34);
  v6 = r8_0;
  if( *(_WORD *)(r8_0 + 32) != (_WORD)result )
  {
    v9 = a2 + 16;
    v10 = RtlpHpAcquireLockExclusive((_EX_PUSH_LOCK *)(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 = KiIrqlFlags;
      __writecr8(v10);
    }
    else
    {
      if( (_InterlockedExchangeAdd64((volatile signed __int64 *)v9, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
        ExfTryToWakePushLock((_EX_PUSH_LOCK *)(a2 + 16));
      LODWORD(a3) = 0;
      CurrentThread = (_ETHREAD *)KeGetCurrentThread();
      if( MiGetSystemRegionType(a2 + 16) == 1 )
        SessionId = MmGetSessionIdEx(CurrentThread->Tcb.ApcState.Process);
      else
        SessionId = -1;
      --CurrentThread->Tcb.SpecialApcDisable;
      v13 = ++CurrentThread->Tcb.AbAllocationRegionCount;
      v14 = ((char)CurrentThread->Tcb.AbEntrySummary | (char)CurrentThread->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
      while( 1 )
      {
        v15 = !_BitScanReverse((unsigned int *)&v16, v14);
        if( v15 )
          break;
        v17 = &CurrentThread->Tcb.LockEntries[v16];
        v14 &= ~(1 << v16);
        if( (v17->AcquiredByte & 1) != 0
          && (v17->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
          && (v17->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == (v9 & 0x7FFFFFFFFFFFFFFCi64)
          && v17->LockState.SessionId == SessionId )
        {
          v17->AcquiredByte &= ~1u;
          if( v17->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
          {
            if( v17 )
            {
              v17->CrossThreadReleasableAndBusyByte |= 2u;
              if( v17->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
                KiAbEntryRemoveFromTree(v17);
              LODWORD(a3) = v17->BoostBitmap.AllFields & 0x1FFFF;
              v17->BoostBitmap.AllFields &= 0xFFFE0000;
              v17->ThreadLocalFlags &= ~1u;
              v17->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
              v18 = v17 - CurrentThread->Tcb.LockEntries;
              if( v13 == 1 )
                CurrentThread->Tcb.AbEntrySummary |= 1 << v18;
              else
                _InterlockedOr8((volatile signed __int8 *)&CurrentThread->Tcb.AbOrphanedEntrySummary, 1 << v18);
              goto LABEL_26;
            }
            break;
          }
        }
      }
      if( (*(&CurrentThread->Tcb.MiscFlags + 1) & 0x10000) == 0 )
        KeBugCheckEx(0x162u, CurrentThread, (PVOID)(a2 + 16), (PVOID)SessionId, 0i64);
LABEL_26:
      --CurrentThread->Tcb.AbAllocationRegionCount;
      KiAbThreadRemoveBoosts(&CurrentThread->Tcb, (VOID *)(a2 + 16), &a3);
      v15 = CurrentThread->Tcb.SpecialApcDisable++ == -1;
      if( v15
        && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)CurrentThread->Tcb.ApcState.ApcListHead[0].Flink != &CurrentThread->Tcb.152 )
      {
        KiCheckForKernelApcDelivery();
      }
      KiLeaveGuardedRegionUnsafe((__int64)KeGetCurrentThread());
    }
  }
  if( v6 )
    return RtlpHpLfhSubsegmentFree(a1, v6, a2, a4 & 1);
  return result;
}

Referenced by: