Function check_task

tests/BS_thread_pool_test.cpp:885–1113

* @brief Check that detach_task() or submit_task() work. * * @param which_func A string naming the function to check. */

 * @param which_func A string naming the function to check.
 */
void check_task(const std::string_view which_func)
{
    BS::thread_pool pool;
    logln("Checking that ", which_func, " works for a function with no arguments or return value...");
    {
        bool flag = false;
        const auto func = [&flag]
        {
            flag = true;
        };
        if (which_func == "detach_task()")
        {
            pool.detach_task(func);
            pool.wait();
        }
        else
        {
            pool.submit_task(func).wait();
        }
        check(flag);
    }
    logln("Checking that ", which_func, " works for a function with one argument and no return value...");
    {
        bool flag = false;
        const auto func = [](bool& flag_)
        {
            flag_ = true;
        };
        if (which_func == "detach_task()")
        {
            pool.detach_task(
                [&func, &flag]
                {
                    func(flag);
                });
            pool.wait();
        }
        else
        {
            pool.submit_task(
                    [&func, &flag]
                    {
                        func(flag);
                    })
                .wait();
        }
        check(flag);
    }
    logln("Checking that ", which_func, " works for a function with two arguments and no return value...");
    {
        bool flag1 = false;
        bool flag2 = false;
        const auto func = [](bool& flag1_, bool& flag2_)
        {
            flag1_ = flag2_ = true;
        };
        if (which_func == "detach_task()")
        {