const bool testAtomicPerf()

in kernel/parallel-test.cpp [52:94]

• 43 lines of code
• 1 McCabe index (conditional complexity)

const bool testAtomicPerf() {
    const int count = 100000;
    {
        const blambda l = []() -> const bool {
            inci = inci + 1;
            return true;
        };
        cout << "Non-atomic inc test " << time(l, 1000, count) << " ms" << endl;
        assert(inci == count + 1000);
    }
#ifdef WANT_THREADS
    {
        const blambda l = []() -> const bool {
            __sync_add_and_fetch(&addi, 1);
            return true;
        };
        cout << "Atomic inc test " << time(l, 1000, count) << " ms" << endl;
        assert(addi == count + 1000);
    }
    {
        pthread_mutex_t mutex;
        pthread_mutex_init(&mutex, NULL);
        const blambda l = [&mutex]() -> const bool {
            pthread_mutex_lock(&mutex);
            muxi = muxi + 1;
            pthread_mutex_unlock(&mutex);
            return true;
        };
        cout << "Locked inc test " << time(l, 1000, count) << " ms" << endl;
        assert(muxi == count + 1000);
        pthread_mutex_destroy(&mutex);
    }
#endif
    {
        const blambda l = []() -> const bool {
            *tlsi = *tlsi + 1;
            return true;
        };
        cout << "Thread local inc test " << time(l, 1000, count) << " ms" << endl;
        assert(*tlsi == count + 1000);
    }
    return true;
}