GetLocalTime和GetSystemTime之间的区别? [英] Difference between GetLocalTime and GetSystemTime ?

问题描述

我在代码中使用了 GetLocalTime 来检查垂直函数需要花费多少时间来进行处理.

为此， GetLocalTime 或 GetSystemTime 是最佳选择?

他们是一样的吗?如果我要衡量代码的性能，应该使用哪一个.


预先感谢.

Hi,

I am using GetLocalTime in my code to check how much time the perticular function is taking for processing.

For this purpose which one is the best choice GetLocalTime or GetSystemTime ?

Are they same ? which one should be used if i am measuring the performance of the code.


Thanks in advance.

推荐答案

[回答后续问题]

由于这是C ++/CLI，因此可以使用.NET库.对于性能测量，请使用类System.Diagnostics.Stopwatch，因为它具有更好的精度(在大多数系统上为亚微秒).您可以通过调用静态属性System.Diagnostics.Stopwatch.IsHighResolution和System.Diagnostics.Stopwatch.Frequency来查询高分辨率操作是否可访问以及实现的频率.请参阅 http://msdn.microsoft.com/en-us/library/system.diagnostics .stopwatch.aspx [ ^ ].

—SA

[Answering a follow-up question]

As this is C++/CLI, you can use .NET libraries. For performance measuring, use the class System.Diagnostics.Stopwatch as it has much better accuracy (sub-microsecond on most systems). You can inquire if the high resolution operation is accessible and the implemented frequency by calling static properties System.Diagnostics.Stopwatch.IsHighResolution and System.Diagnostics.Stopwatch.Frequency. See http://msdn.microsoft.com/en-us/library/system.diagnostics.stopwatch.aspx[^].

—SA

GetLocalTime为您提供基于当前时区的时间.
GetSystemTime是系统时间，与时区无关.

GetLocalTime gives you time based on current timezone.
GetSystemTime is the system time and has nothing to do with timezone.

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