Function create

include/tscore/Extendible.h:643–661

// allocate and initialize an extendible data structure
template <typename Derived_t, typename... Args>
Derived_t *
create(Args &&...args)
{
  // don't instantiate until all Fields are finalized.
  ink_assert(ext::details::areFieldsFinalized());

  // calculate the memory needed for the class and all Extendible blocks
  const size_t type_size = ext::sizeOf<Derived_t>();

  // alloc one block of memory
  Derived_t *ptr = static_cast<Derived_t *>(ats_memalign(alignof(Derived_t), type_size));

  // construct (recursively super-to-sub class)
  new (ptr) Derived_t(std::forward(args)...);

  // define extendible blocks start offsets (recursively super-to-sub class)
  details::initRecurseSuper(*ptr, uintptr_t(ptr) + sizeof(Derived_t));
  return ptr;
}

/////////////////////////
// ExtDebugFormat - print a ascii chart of memory layout of a class