Function dp

deps/v8/tools/windbg.js:752–786

(addr, count = 10)

// TODO irinayat: would be nice to identify handles and smi as well
function dp(addr, count = 10) {
  if (isolate_address == 0) {
    print(`To see where objects are located, run !set_iso.`);
  }

  if (!Number.isSafeInteger(int(addr))) {
    print(`${hex(addr)} doesn't look like a valid address`);
    return;
  }

  const ptr_size = tagged_size();
  let aligned_addr = addr - (addr % ptr_size);
  let val = poim(aligned_addr);
  let iter = 0;
  while (val && iter < count) {
    const map = is_map(val);
    const obj = is_likely_object(val) && !map;

    const augm_map = map ? "map" : "";
    const augm_obj = obj ? "obj" : "";
    const augm_other = !map && !obj ? "val" : "";

    let c = find_chunk(decomp(val));
    const augm_space = c ? ` in ${c.space}` : "";
    const augm = `${augm_map}${augm_obj}${augm_other}${augm_space}`;

    const full_ptr = using_ptr_compr ?
        pad_right((map || obj) ? decomp(val) : val) : "";
    print(`${pad_right(aligned_addr)} ${pad_right(val)} ${full_ptr}   ${augm}`);

    aligned_addr += ptr_size;
    val = poim(aligned_addr);
    iter++;
  }
}

/*-----------------------------------------------------------------------------
    Remembered Sets