stopwatch

I wanted to create a stopwatch program in ruby so I googled it and found this SO Q . But over there, the author calls the tick function with 1000xxx.times . I wanted to know how I can do it using something like (every second).times or for each increment of second do call the tick function. Thread.new do while true do puts Time.now # or call tick function sleep 1 end end This function: def every_so_many_seconds(seconds) last_tick = Time.now loop do sleep 0.1 if Time.now - last_tick >= seconds last_tick += seconds yield end end end When used like this: every_so_many_seconds(1) do p Time.now end

有时我们在做开发的时候需要记录每个任务执行时间，或者记录一段代码执行时间，最简单的方法就是打印当前时间与执行完时间的差值，然后这样如果执行大量测试的话就很麻烦，并且不直观，如果想对执行的时间做进一步控制，则需要在程序中很多地方修改，目前spring-framework提供了一个StopWatch类可以做类似任务执行时间控制，也就是封装了一个对开始时间，结束时间记录操作的Java类，如下： public class TestStopWatch { private void test() throws InterruptedException { StopWatch stopWatch = new StopWatch("程序流程耗时统计"); stopWatch.start("查询数据"); System.out.println("查询操作====="); Thread.sleep(1000); stopWatch.stop(); stopWatch.start("新增数据"); System.out.println("新增操作====="); Thread.sleep(2000); stopWatch.stop(); stopWatch.start("发起远程调用"); System.out.println("远程调用服务===="); Thread.sleep(3000);

I am trying to implement a time service that will report time with greater accuracy than 1ms. I thought an easy solution would be to take an initial measurement and use StopWatch to add a delta to it. The problem is that this method seems to diverge extremely fast from wall time. For example, the following code attempts to measure the divergence between Wall Time and my High Resolution Clock: public static void Main(string[] args) { System.Diagnostics.Stopwatch s = new System.Diagnostics.Stopwatch(); DateTime baseDateTime = DateTime.UtcNow; s.Start(); long counter = 0; while(true) { DateTime