Function print_objects_in_range

deps/v8/tools/windbg.js:464–489

(start, end)

// This function assumes that pointers to objects are stored at ptr-size aligned
// boundaries.
function print_objects_in_range(start, end){
  if (!Number.isSafeInteger(int(start)) || !Number.isSafeInteger(int(end))) {
    return;
  }
  const ptr_size = pointer_size();
  if (start < ptr_size || end <= start) return;

  let iters = (end - start) / ptr_size;
  let cur = start - ptr_size;
  print(`===============================================`);
  print(`objects in range ${hex(start)} - ${hex(end)}`);
  print(`===============================================`);
  let count = 0;
  while (cur && cur < end) {
    let obj = find_object_next(cur, iters);
    if (obj) {
      count++;
      print(`${hex(obj + 1)} : ${hex(poim(obj))}`);
      iters  = (end - cur) / ptr_size;
    }
    cur = obj + ptr_size;
  }
  print(`===============================================`);
  print(`found ${count} objects in range ${hex(start)} - ${hex(end)}`)
  print(`===============================================`);
}

// This function assumes the pointer fields to be ptr-size aligned.
function print_objects_tree(root, depth_limit) {