MiObtainFaultCharges

UINT64 __stdcall MiObtainFaultCharges(_MI_PARTITION *Partition, UINT64 DesiredPageCount, UINT64 Flags){
  char v3; 
  unsigned int v4; 
  struct _KPRCB *CurrentPrcb; 
  unsigned __int64 v7; 
  bool v8; 
  unsigned __int32 v9; 
  unsigned int v10; 
  INT64 v12; 
  v3 = Flags;
  v4 = DesiredPageCount;
  while( 1 )
  {
    if( Partition == (_MI_PARTITION *)&MiSystemPartition )
    {
      CurrentPrcb = KeGetCurrentPrcb();
      v7 = *((unsigned int *)CurrentPrcb + 8391);
      if( v4 <= v7 )
      {
        do
        {
          if( (_DWORD)v7 == -1 )
            break;
          v9 = _InterlockedCompareExchange((volatile signed __int32 *)CurrentPrcb + 8391, v7 - v4, v7);
          v8 = (_DWORD)v7 == v9;
          LODWORD(v7) = v9;
          if( v8 )
            goto LABEL_6;
        }
        while( v4 <= (unsigned __int64)v9 );
      }
    }
    v12 = 1i64;
    if( v4 != 1 )
      v12 = 1024i64;
    if( (unsigned int)MiChargePartitionResidentAvailable((INT64)Partition, v4, v12) )
      break;
    v4 >>= 1;
    if( !v4 )
      goto LABEL_23;
  }
LABEL_6:
  if( v4 )
    goto LABEL_7;
LABEL_23:
  if( (v3 & 2) == 0 )
    return 0i64;
  v4 = 1;
  MiChargeResident((ULONG_PTR *)Partition, 1ui64, 0xFFFFFFFFi64);
LABEL_7:
  if( (v3 & 1) == 0 )
    return v4;
  v10 = v4;
  while( (unsigned int)MiChargeCommit(Partition, v10, 1ui64) != 1 )
  {
    v10 >>= 1;
    if( !v10 )
    {
      if( (v3 & 2) != 0 )
      {
        v10 = 1;
        MiChargeCommit(Partition, 1ui64, 4ui64);
      }
      break;
    }
  }
  if( v10 != v4 )
    MiReturnFaultCharges(Partition, v4 - v10, 0i64);
  return v10;
}

Referenced by: