替代方法来延迟我的程序而不睡觉，因为在C ++中使用异步IO？(Alternate ways to delay my program without sleeping because of the use of asynchronous IO in C++?)

 除了睡觉之外，我还有一些关于使用C ++延迟程序的替代方法的问题。 
 
 我有我的程序的一部分接收和发送UDP数据包到控制器。 这部分程序必须异步运行。 为了减少此提供程序的开销，我决定使用异步IO来接收UDP数据包，而不是使用单独的线程来监视套接字。 
 
 我遵循这个 sigaction的例子来完成这个。 我注意到，如果我在尝试使用这个sigaction的时候尝试使用usleep，那么每当我收到一个数据包的时候就会打破我的睡眠。 这种说法是有道理的，因为我认为sigaction是由CPU上的某种中断触发的，这可能会阻止CPU进入休眠状态。 如果任何人有一个很好的解释为什么会发生这种情况，我会很好奇知道。 我的问题是，有时我必须连续发送几个数据包，并且需要确保延迟它们，否则我的控制器会错过它们。 
 
 我通常会使用睡眠来延迟发送数据包，但现在我不能因为它被我的sigaction破坏了。 我曾想过可能会忙于等待，但这可能太不一致了。 我也有关于可能使用一个定时清空的数据包队列，但似乎可能有一个更简单的解决方案。 
 
 除了睡眠之外，还有其他延迟发送数据包的方式吗？ 有没有办法设置我的异步IO，所以它不会打破睡眠？ 我是以错误的方式解决这个问题吗？ 

I have a questions regarding alternate ways to delay a program in C++ besides sleeping.
 
I have a part of my program that receives and sends UDP packets to a controller. This part of the program has to run asynchronously. In order to reduce the overhead of this provider I decided to use asynchronous IO to receive the UDP packets rather than having a separate thread monitor the socket. 
 
I followed this example of a sigaction to accomplish this. I noticed that if I try to use usleep while this sigaction is active it will break my sleep whenever I receive a packet. This kind of makes sense since I assume the sigaction is triggered by some sort of interrupt on the CPU which might stop the CPU from sleeping. If anyone has a good explanation for why this happens I would be curious to know. My issues is that there are times where I have to send several packets in succession and need to make sure to delay them otherwise they are missed by my controller.
 
I usually would use a sleep to delay the sending of the packets, but now I can't because of it gets broken by my sigaction. I have thought about maybe using a busy wait, but it might be too inconsistent. I have also though about maybe using a queue of packets that is emptied at regular intervals using a timer, but it seems like there might be a simpler solution.
 
Is there another way to delay the sending of the packets besides sleeping? Is there a way to set up my asynchronous IO so it does not break the sleep? Am I going about this in the wrong way?

原文：https://stackoverflow.com/questions/26167272