message: added gethostbyname to block_io_functions.
diff: @@ -44,7 +44,7 @@ void swoole_runtime_init(int module_number TSRMLS_DC)
  static auto block_io_functions =
  { "sleep", "usleep", "time_nanosleep", "time_sleep_until", "file_get_contents", "curl_init", "stream_select",
  - "socket_select" };
  + "socket_select", "gethostbyname", };
  static auto block_io_classes =
  { "redis", "mysqli", };
  