Function is_contention_site_valid

src/bthread/mutex.cpp:375–377

}

bool is_contention_site_valid(const bthread_contention_site_t& cs) {
    return bvar::is_sampling_range_valid(cs.sampling_range);
}

void make_contention_site_invalid(bthread_contention_site_t* cs) {
    cs->sampling_range = 0;