Method alloc_keys

sql/table.cc:8574–8598

*/

bool TABLE::alloc_keys(uint key_count)
{
  KEY *new_key_info;
  key_part_map *new_const_key_parts;
  DBUG_ASSERT(s->tmp_table == INTERNAL_TMP_TABLE);

  if (!multi_alloc_root(&mem_root,
                        &new_key_info, sizeof(*key_info)*(s->total_keys+key_count),
                        &new_const_key_parts,
                        sizeof(*new_const_key_parts)*(s->total_keys+key_count),
                        NullS))
    return TRUE;
  if (s->total_keys)
  {
    memmove(new_key_info, s->key_info, sizeof(*key_info) * s->total_keys);
    memmove(new_const_key_parts, const_key_parts,
            s->total_keys * sizeof(const_key_parts));
  }
  s->key_info= key_info= new_key_info;
  const_key_parts= new_const_key_parts;
  bzero((char*) (const_key_parts + s->total_keys),
        sizeof(*const_key_parts) * key_count);
  max_keys= s->total_keys+key_count;
  return FALSE;
}


/**