Timeout function example

func_timeout.cpp

#include <chrono>
#include <condition_variable>
#include <iostream>
#include <mutex>
#include <thread>

using namespace std::chrono_literals;

int Func()
{
    std::this_thread::sleep_for(10s);

    return 1;
}

int FuncWrapper()
{
    std::mutex m;
    std::condition_variable cv;
    int retValue;

    std::thread t([&cv, &retValue]() {
        retValue = Func();
        cv.notify_one();
    });

    t.detach();

    {
        std::unique_lock<std::mutex> l(m);
        if (cv.wait_for(l, 1s) == std::cv_status::timeout)
        {
            throw std::runtime_error("Timeout");
        }
    }

    return retValue;
}

int main()
{
    bool timedOut = false;

    try
    {
        FuncWrapper();
    }
    catch (std::runtime_error& e)
    {
        std::cout << e.what() << std::endl;
        timedOut = true;
    }

    if (!timedOut)
    {
        std::cout << "Success" << std::endl;
    }

    return 0;
}