humotion

Timestamp TimestampedList::get_first_timestamp(){

    //lock the tsf_list for this access. by doing this we assure

    //that no other thread accessing this element can diturb the

    //following atomic instructions:

    mutex::scoped_lock scoped_lock(access_mutex);

    if (tsf_list.empty()){

        return Timestamp(0,0);

    }

    timestamped_float_list_t::iterator it = tsf_list.begin();

    return it->timestamp;

}