MiComputeAgeDistribution

UINT16 __stdcall MiComputeAgeDistribution(_MI_PARTITION *Partition, UINT64 Recompute){
  int v2; 
  _QWORD *WorkingSetControl; 
  _BYTE *v5; 
  _QWORD *i; 
  _QWORD *v7; 
  __int64 v8; 
  unsigned __int64 v9; 
  unsigned int v10; 
  int v11; 
  unsigned __int64 v12; 
  unsigned __int64 v13; 
  _KLOCK_QUEUE_HANDLE LockHandle; 
  UINT64 ClaimDistribution[8]; 

  v2 = Recompute;
  memset(&LockHandle, 0, sizeof(LockHandle));
  memset(ClaimDistribution, 0i64, sizeof(ClaimDistribution));
  WorkingSetControl = Partition->WorkingSetControl;
  if( v2 == 1 )
  {
    KeAcquireInStackQueuedSpinLock((PKSPIN_LOCK)&stru_140C4DB30 + 522, &LockHandle);
    v5 = Partition->gap1AC8;
    for( i = *(_QWORD **)v5; i != (_QWORD *)v5; i = (_QWORD *)*i )
      MiUpdateClaimDistribution((_MMSUPPORT_INSTANCE *)(i - 3), ClaimDistribution);
    memmove(WorkingSetControl + 302, ClaimDistribution, 0x40u);
    v7 = WorkingSetControl + 308;
    v8 = 2i64;
    v9 = 0i64;
    do
    {
      v9 += *v7++;
      --v8;
    }
    while( v8 );
    WorkingSetControl[301] = v9;
    KeReleaseInStackQueuedSpinLockFromDpcLevel(&LockHandle);
    __writecr8(LockHandle.OldIrql);
  }
  else
  {
    v9 = WorkingSetControl[301];
  }
  v10 = 5;
  v11 = 0;
  while( v9 < 4i64 * WorkingSetControl[298] )
  {
    ++v11;
    v9 += WorkingSetControl[v10 + 302];
    if( v10 == 1 )
      break;
    --v10;
  }
  v12 = WorkingSetControl[294];
  if( v12 )
  {
    v13 = (unsigned int)(1000 * v11) / v12;
    if( (unsigned __int16)v13 > 0x3E8u )
      LOWORD(v13) = 1000;
    return v13;
  }
  else if( v11 )
  {
    return 1000;
  }
  else
  {
    return 0;
  }
}

Referenced by: