blocks|key|4106432|text|假设这是Windows+GetTickCount调用，这是完全合理的：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4106433|4106434|+GetTickCount函数的分辨率受限于系统定时器的分辨率，通常在10毫秒到16毫秒的范围内。|blockquote|4106435|4106436|4106437|请注意，它一开始只测量毫秒-现在你可以在毫秒内做很多事情。|4106438|文档接着说：|4106439|4106440|如果您需要更高分辨率的计时器，请使用multimedia+timer或high-resolution+timer。|4106441|4106442|4106443|也许QueryPerformanceCounter会更合适？|style|CODE|4106444|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/ms724408(VS.85).aspx|1|http://msdn.microsoft.com/en-us/library/dd743609(v=VS.85).aspx|2|http://msdn.microsoft.com/en-us/library/ms644900(v=VS.85).aspx)|3|http://msdn.microsoft.com/en-us/library/ms644904(v=VS.85).aspx^0|C|C|0|0|0|0|0|0|0|0|0|I|G|1|Z|L|2|0|0|0|2|N|2|N|3|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@$A|1B|B|1C|1|1D]]|C|$]]|$1|D|3|-4|5|6|7|1E|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|1F|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|1G|8|@]|9|@]|C|$]]|$1|I|3|-4|5|6|7|1H|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|1I|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|1J|8|@]|9|@]|C|$]]|$1|N|3|-4|5|6|7|1K|8|@]|9|@]|C|$]]|$1|O|3|P|5|G|7|1L|8|@]|9|@$A|1M|B|1N|1|1O]|$A|1P|B|1Q|1|1R]]|C|$]]|$1|Q|3|-4|5|6|7|1S|8|@]|9|@]|C|$]]|$1|R|3|-4|5|6|7|1T|8|@]|9|@]|C|$]]|$1|S|3|T|5|6|7|1U|8|@$A|1V|B|1W|U|V]]|9|@$A|1X|B|1Y|1|1Z]]|C|$]]|$1|W|3|-4|5|6|7|20|8|@]|9|@]|C|$]]]|X|$Y|$5|Z|10|11|C|$12|13]]|14|$5|Z|10|11|C|$12|15]]|16|$5|Z|10|11|C|$12|17]]|18|$5|Z|10|11|C|$12|19]]]]

Assuming this is the Windows <a href="http://msdn.microsoft.com/en-us/library/ms724408(VS.85).aspx" rel="noreferrer">GetTickCount</a> call, that's entirely reasonable:

<blockquote>
 The resolution of the GetTickCount
 function is limited to the resolution
 of the system timer, which is
 typically in the range of 10
 milliseconds to 16 milliseconds.
</blockquote>

Note that it's only measuring milliseconds to start with - and you can do an awful lot in a millisecond these days.

The docs go on to say:

<blockquote>
 If you need a higher resolution timer,
 use a <a href="http://msdn.microsoft.com/en-us/library/dd743609(v=VS.85).aspx" rel="noreferrer">multimedia timer</a> or a
 <a href="http://msdn.microsoft.com/en-us/library/ms644900(v=VS.85).aspx" rel="noreferrer">high-resolution timer</a>.
</blockquote>

Perhaps <a href="http://msdn.microsoft.com/en-us/library/ms644904(v=VS.85).aspx" rel="noreferrer"><code>QueryPerformanceCounter</code></a> would be more appropriate?

blocks|key|2698221|text|如果你指的是Windows+API调用，那么请阅读this。我猜你是在尝试短时间间隔，所以这段话是相关的。你的计时时间比这个时间间隔短吗？如果是这样的话，也许可以研究一下QueryPerformanceCounter。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2698222|2698223|+GetTickCount函数的分辨率受限于系统定时器的分辨率，通常在10毫秒到16毫秒的范围内。GetSystemTimeAdjustment函数所做的调整不会影响GetTickCount函数的分辨率。|blockquote|2698224|2698225|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/ms724408(VS.85).aspx)^0|P|4|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|V|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|W|8|@]|9|@]|C|$]]|$1|I|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

If you are referring to the Windows API call then read <a href="http://msdn.microsoft.com/en-us/library/ms724408(VS.85).aspx" rel="noreferrer">this</a>.
I would guess that you are trying to time a short interval so this paragraph is relevant. Are you timing something shorter than that interval? If so look into QueryPerformanceCounter instead perhaps.

<blockquote>
 The resolution of the GetTickCount
 function is limited to the resolution
 of the system timer, which is
 typically in the range of 10
 milliseconds to 16 milliseconds. The
 resolution of the GetTickCount
 function is not affected by
 adjustments made by the
 GetSystemTimeAdjustment function.
</blockquote>

blocks|key|1614559|text|如果你走QueryPerformanceCounter路线，你需要注意依赖于硬件的wierdness。已经有一段时间了，所以我不知道这样的事情是否还会发生。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1614560|您可能还想使用look+at+this+link，因为它有一个很好的示例应用程序，可以比较QueryPerformanceCounter、GetTickCount和TimeGetTime|1614561|entityMap|0|LINK|mutability|MUTABLE|url|http://web.archive.org/web/20070118175020/http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q274323&|1|http://web.archive.org/web/20101223104030/http://developer.nvidia.com/object/timer_function_performance.html^0|15|9|0|0|7|H|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

If you go the QueryPerformanceCounter route you need to watch out for hardware dependent <a href="http://web.archive.org/web/20070118175020/http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q274323&amp;" rel="nofollow noreferrer">wierdness</a>. Its been awhile so I don't know if this kinda stuff still happens. 

You might also want to take a <a href="http://web.archive.org/web/20101223104030/http://developer.nvidia.com/object/timer_function_performance.html" rel="nofollow noreferrer">look at this link</a> since it has a nice sample app which compares QueryPerformanceCounter, GetTickCount and TimeGetTime

blocks|key|2698301|text|来自MSDN|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2698302|2698303|+GetTickCount函数的分辨率受限于系统定时器的分辨率，通常在10毫秒到16毫秒的范围内。GetSystemTimeAdjustment函数所做的调整不会影响GetTickCount函数的分辨率。|blockquote|2698304|2698305|所用时间存储为DWORD值。因此，如果系统连续运行49.7天，时间将接近于零。要避免此问题，请使用GetTickCount64函数。否则，在比较时间时检查是否有溢出情况。|2698306|如果您需要更高分辨率的定时器，请使用多媒体定时器或高分辨率定时器。|2698307|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/ms724408%2528VS.85%2529.aspx^0|2|4|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|Z|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|10|8|@]|9|@]|C|$]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|C|$]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|C|$]]|$1|M|3|-4|5|6|7|13|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

From <a href="http://msdn.microsoft.com/en-us/library/ms724408%28VS.85%29.aspx" rel="nofollow noreferrer">MSDN</a>

<blockquote>
 The resolution of the GetTickCount
 function is limited to the resolution
 of the system timer, which is
 typically in the range of 10
 milliseconds to 16 milliseconds. The
 resolution of the GetTickCount 
 function is not affected by
 adjustments made by the
 GetSystemTimeAdjustment function.
 
 The elapsed time is stored as a DWORD
 value. Therefore, the time will wrap
 around to zero if the system is run
 continuously for 49.7 days. To avoid
 this problem, use the GetTickCount64
 function. Otherwise, check for an
 overflow condition when comparing
 times.
 
 If you need a higher resolution timer,
 use a multimedia timer or a
 high-resolution timer.
</blockquote>

blocks|key|1614529|text|GetTickCount的分辨率为1毫秒(实际上是几毫秒)。在这两个函数之间调用的函数花费的时间很可能不到1毫秒。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1614530|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

GetTickCount has a resolution of one millisecond (in practice, it's several milliseconds). It's highly likely that the functions you're calling in between are taking considerably less than 1 millisecond.

I have a question regarding GetTickCount function,
I have two calls to this function in my code with several commands between them and the function in both calls returns same count.
i.e.

<pre><code>var1 = GetTickCount();
code
:
:
var2 = GetTickCount();
</code></pre>

var1 and var2 has same values in it.

can someone help?

GetTickCount function

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

教程

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云智能顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云AI代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

功能1上新10个字符

功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符。

功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符。

功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符

功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符

功能4上新

文章&问答评论现已支持表情

全新交互，全新视觉，新增快捷键、悬浮工具栏、高亮块等功能并同时优化现有功能，全面提升创作效率和体验

社区富文本编辑器全新改版！诚邀体验～ 

精选全网热门MCP server，让你的AI更好用 🚀

💥开发者 MCP广场重磅上线！

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

聚焦“写作效率、视觉美观与运行性能”三方面进行全面升级，为您提供更高效、稳定的创作环境

社区富文本&Markdown编辑器全新改版上线，欢迎大家体验!

诚挚邀请您参与本次调研，分享您的真实使用感受与建议。您的反馈至关重要，感谢您的支持与参与！

社区新版编辑器体验调研

我有一个关于GetTickCount函数的问题，我在我的代码中有两个对这个函数的调用，它们之间有几个命令，两个调用中的函数返回相同的计数。即var1 = GetTickCount();code::var2 = GetTickCount();var1和var2具有相同的值。有人能帮帮忙吗？

问GetTickCount函数
EN

回答 5

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问GetTickCount函数EN

回答 5

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问GetTickCount函数
EN