C++11 inter-thread event trigger

I have a situation where one thread produces events or triggers (e.g. a button press), and another thread wants to wait until that event occurs. However, when it waits, it doesn't care about previous events. I can almost do it like this:

class Trigger
{
public:

    // Unblock all threads that are *currently* blocked in wait().
    void notify()
    {
        mConditionVariable.notify_all();
    }

    // Wait until notify() is called.
    void wait()
    {
        std::unique_lock<std::mutex> lock(mMutex);
        mConditionVariable.wait(lock);
    }
private:
    std::mutex mMutex;
    std::condition_variable mConditionVariable;
};

However, apparently mConditionVariable.wait() can spuriously unblock, so I can't rely on it. Is there any way to make this 100% reliable? Also is there a standard name for this construction?