Question

void WINEvents::loop()
{
    while (true)
    {
        boost::this_thread::sleep_for(boost::chrono::milliseconds(500));

        //boost::this_thread::sleep(boost::posix_time::milliseconds(500));

        /*boost::mutex                   mutex;
        boost::condition_variable_any    condition;
        boost::unique_lock<boost::mutex> lock(mutex);
        condition.wait_for(lock, boost::chrono::milliseconds(500));*/
    }
}

void SDLplateforme::execute()
{
    WINEvents winEvents;
    boost::thread newThread(WINEvents::loop, &winEvents);

    while (true)
    {
        #####EDIT:
        auto time = Int2String(_timer->getTicks());
        SDL_SetWindowTitle(_window, time.c_str());
    }
}

int main(int argc, char *argv[])
{
    auto plateforme = make_shared<SDLplateforme>();

    boost::thread mainThread(SDLplateforme::execute, plateforme);
    mainThread.join();

    return 0;
}

我创建了两个线程：

SDLplateforme::execute() - ＆gt;不断在窗口框架中显示计时器值
WINEvents::loop() - ＆gt;使用boost::this_thread::sleep

但是，WINEvents::loop()中的睡眠调用似乎也使另一个线程处于睡眠状态，因为文本显示的间隔等于睡眠参数（此处为500ms），而应该每帧更新一次。

boost::this_thread::sleep()是否只应该在当前线程中休眠？如果是的话，我做错了什么？如果不是，我该如何实现？

boost :: this_thread :: sleep_for（）让我所有的线程都进入休眠状态

0 个答案: