C++ (Cpp) ethr_mutex_trylock Beispiele

Beispiel #1

Datei: ethread_tests.c Projekt: 0x00evil/otp

static void
try_lock_mutex_test(void)
{
    int i, res;
    ethr_tid tid;

    res = ethr_mutex_init(&tlmt_mtx1);
    ASSERT(res == 0);
    res = ethr_mutex_init(&tlmt_mtx2);
    ASSERT(res == 0);
    res = ethr_cond_init(&tlmt_cnd2);
    ASSERT(res == 0);

    tlmt_mtx1_locked = 0;
    tlmt_mtx1_do_unlock = 0;

    res = ethr_thr_create(&tid, tlmt_thread, NULL, NULL);
    ASSERT(res == 0);

    ethr_mutex_lock(&tlmt_mtx2);

    while (!tlmt_mtx1_locked) {
	res = ethr_cond_wait(&tlmt_cnd2, &tlmt_mtx2);
	ASSERT(res == 0 || res == EINTR);
    }

    ethr_mutex_unlock(&tlmt_mtx2);

    for (i = 0; i < 10; i++) {
	res = ethr_mutex_trylock(&tlmt_mtx1);
	ASSERT(res == EBUSY);
    }

    ethr_mutex_lock(&tlmt_mtx2);

    tlmt_mtx1_do_unlock = 1;
    ethr_cond_signal(&tlmt_cnd2);

    while (tlmt_mtx1_locked) {
	res = ethr_cond_wait(&tlmt_cnd2, &tlmt_mtx2);
	ASSERT(res == 0 || res == EINTR);
    }

    ethr_mutex_unlock(&tlmt_mtx2);

    res = ethr_mutex_trylock(&tlmt_mtx1);
    ASSERT(res == 0);

    ethr_mutex_unlock(&tlmt_mtx1);

    res = ethr_thr_join(tid, NULL);
    ASSERT(res == 0);

    res = ethr_mutex_destroy(&tlmt_mtx1);
    ASSERT(res == 0);
    res = ethr_mutex_destroy(&tlmt_mtx2);
    ASSERT(res == 0);
    res = ethr_cond_destroy(&tlmt_cnd2);
    ASSERT(res == 0);
}

Beispiel #2

Datei: erl_drv_thread.c Projekt: Eric-Zhong/otp

int
erl_drv_mutex_trylock(ErlDrvMutex *dmtx)
{
#ifdef USE_THREADS
    if (!dmtx)
	fatal_error(EINVAL, "erl_drv_mutex_trylock()");
    return ethr_mutex_trylock(&dmtx->mtx);
#else
    return 0;
#endif
}

Beispiel #3

Datei: erl_drv_thread.c Projekt: AugustoFernandes/otp

int
erl_drv_mutex_trylock(ErlDrvMutex *dmtx)
{
#ifdef USE_THREADS
    int res = dmtx ? ethr_mutex_trylock(&dmtx->mtx) : EINVAL;
    if (res != 0 && res != EBUSY)
	fatal_error(res, "erl_drv_mutex_trylock()");
    return res;
#else
    return 0;
#endif
}