set flag LeanMode.
set flag l_withoutReflection.
do not include function get.

sbool linux_rssFixedForZGC_verbose;

static long linux_rssFixedForZGC() {
  ret linux_rssFixedForZGC(processID_int());
}

static long linux_rssFixedForZGC(int pid) {
  S text = loadTextFile("/proc/" + pid + "/smaps");

  S range = null;
  new TreeMap<S, Long> rssByRange;
  for (S s : lines(text)) {
    S addr = regexpFirstGroupIC("^([0-9a-f]{1,16})-", s);
    if (addr != null) {
      addr = lpad(addr, 16, '0');
      //print("Have address: " + addr);
      S cleanedAddr = longToHex(parseUnsignedHexLong(addr) & ~((1L << 42)-1));
      range = takeFirst_string(6, cleanedAddr);
      continue;
    } // else print("Not range: " + s);
    PairS p = parseColonProperty(s);
    if (eqic(pairA(p), "rss")) {
      long size = Long.parseLong(beforeSpace(p.b));
      if (size != 0)
        rssByRange.put(range, getOrCreate_long(rssByRange, range) + size);
    }
  }
  if (linux_rssFixedForZGC_verbose)
    for (Map.Entry<S, Long> e : rssByRange.entrySet()) {
      System.out.println("Address range " + rpad(e.getKey(), 16, 'x') + ": " + toK(e.getValue()) + " MB");
    }
    
  Long min = null;
  for (S _range : ll("000004", "000008", "000010", "00007c")) {
    Long l = rssByRange.get(_range);
    if (l != null) min = min == null ? l : Math.min(min, l);
  }

  long total = 0;
  for (long l : rssByRange.values()) total += l;
  long guess = min == null ? total : total-min*3;
  ret guess*1024;
}