C++ (Cpp) hpx::make_ready_future Exemples

Exemple #1

Fichier : local_dataflow_executor_v1.cpp Projet : ShmuelLevine/hpx

void future_function_pointers(Executor& exec)
{
    future_void_f1_count.store(0);
    future_void_f2_count.store(0);
    future_int_f1_count.store(0);
    future_int_f2_count.store(0);

    future<void> f1
        = dataflow(exec,
            &future_void_f1
          , async(&future_void_sf1, shared_future<void>(make_ready_future()))
        );

    f1.wait();

    HPX_TEST_EQ(future_void_f1_count, 2u);
    future_void_f1_count.store(0);

    future<void> f2 = dataflow(exec,
        &future_void_f2
      , async(&future_void_sf1, shared_future<void>(make_ready_future()))
      , async(&future_void_sf1, shared_future<void>(make_ready_future()))
    );

    f2.wait();
    HPX_TEST_EQ(future_void_f1_count, 2u);
    HPX_TEST_EQ(future_void_f2_count, 1u);

    future_void_f1_count.store(0);
    future_void_f2_count.store(0);
    future_int_f1_count.store(0);
    future_int_f2_count.store(0);

    future<int> f3 = dataflow(exec,
        &future_int_f1
      , make_ready_future()
    );

    HPX_TEST_EQ(f3.get(), 1);
    HPX_TEST_EQ(future_int_f1_count, 1u);
    future_int_f1_count.store(0);

    future<int> f4 = dataflow(exec,
        &future_int_f2
      , dataflow(exec, &future_int_f1, make_ready_future())
      , dataflow(exec, &future_int_f1, make_ready_future())
    );

    HPX_TEST_EQ(f4.get(), 2);
    HPX_TEST_EQ(future_int_f1_count, 2u);
    HPX_TEST_EQ(future_int_f2_count, 1u);
    future_int_f1_count.store(0);
    future_int_f2_count.store(0);

    future_int_f_vector_count.store(0);
    std::vector<future<int> > vf;
    for(std::size_t i = 0; i < 10; ++i)
    {
        vf.push_back(dataflow(exec, &future_int_f1, make_ready_future()));
    }
    future<int> f5 = dataflow(exec, &future_int_f_vector, std::ref(vf));

    HPX_TEST_EQ(f5.get(), 10);
}