C++：在 NIOS II 上多次使用 alt_alarm

问：

我有一个计时器类，如下所示：

class CallbackTimer {
public:
    CallbackTimer(unsigned int time, unsigned int (*callback) (void* context), void *context){
    m_time = time;
    m_callback = callback;
    m_context = context;
    }

    alt_alarm m_alarm;
    long unsigned int (*m_callback)(void *);
    void *m_context;
    long unsigned int m_time;
}

我想做一个每秒调用一次回调的循环函数。此函数如下所示：

// is static because it calls itself with alt_alarm
static long unsigned int CallbackTimer::loop(void* vpTimer){
    // void* gets used because alt_alarm_start requieres a void* as a param
    CallbackTimer* timer = static_cast<CallbackTimer*>(vpTimer);
    CallbackTimer* newTimer = new CallbackTimer(*timer);
    delete timer;

    newTimer->m_callback(newTimer->m_context);

    alt_alarm_stop(&(newTimer->m_alarm));
    alt_alarm_start(&(newTimer->m_alarm), newTimer->m_time, CallbackTimer::loop, 
                    static_cast<void*>(newTimer));
    return 0;
}

它将主要用于以下方面：

// Note that Communicator::update can be any static functionpointer and
// communicator can be a nullptr
CallbackTimer* timer = new CallbackTimer(1000, Communicator::update, communicator);
CallbackTimer::loop(static_cast<void*>(timer));

这实际上有效，但它非常丑陋，最后，当计时器停止时，您会有一个小的内存泄漏（如果我不使用智能指针）。

我想知道是否有一种方法可以多次使用，例如：alt_alarm

static long unsigned int CallbackTimer::loop(void* vpTimer){
    CallbackTimer* timer = static_cast<CallbackTimer*>(vpTimer);

    timer->m_callback(timer->m_context);

    alt_alarm_stop(&(timer->m_alarm));
    alt_alarm_start(&(timer->m_alarm), timer->m_time, CallbackTimer::loop, 
                    static_cast<void*>(timer));
    return 0;
}

这段代码对我来说看起来不错，但回调只会执行两次。感谢您的帮助。