Java - thread.sleep的替代品 [英] Java - alternative to thread.sleep

问题描述

我需要暂停一个while循环一段特定的毫秒数。我尝试过使用Thread.sleep（持续时间），但它不准确，尤其是在循环方案中。毫秒精度在我的程序中很重要。

I have a requirement to pause a while loop for a specific number of milliseconds. I have tried using Thread.sleep(duration) but it is not accurate, especially in a looping scenario. Millisecond accuracy is important in my program.

这是我不想回去检查条件的算法，直到 expectedElapsedTime 已经过去了。

Here is the algorithm where I don't want to go back to check for condition until expectedElapsedTime has passed by.

while (condition) {
    time = System.currentTimeMillis();
    //do something
    if (elapsedTime(time) < expectedElapsedTime) ) {
        pause the loop  // NEED SUBSTITUTE FOR Thread.sleep()
    }
    // Alternative that I have tried but not giving good results is 
    while ((elapsedTime(time) < expectedElapsedTime)) {
        //do nothing
    }
}

long elapsedTime(long time) {
   long diff = System.currentTimeMillis() - time;
   return diff;
}

推荐答案

尝试 ScheduledThreadPoolExecutor 。它应该提供更可靠的计时结果。

Try a ScheduledThreadPoolExecutor. It's supposed to give more reliable timing results.

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