Function mariadb_sys::handler_ha_external_lock

pub unsafe extern "C" fn handler_ha_external_lock(
    this: *mut handler,
    thd: *mut THD,
    lock_type: c_int
) -> c_int

These functions represent the public interface to users of the handler class, hence they are not virtual. For the inheritance interface, see the (private) functions write_row(), update_row(), and delete_row() below.