C++ CPU Bus Speed & Multiplier(Ratio)

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I tried to get the CPU Bus Speed and Multiplier(ratio) and found out that I could not via C#.

So I am wondering if anyone knows how to get these with C++ without using Win32_ type libraries.

Posted 19-Jun-11 14:43pm

thexcodec

Updated 19-Jun-11 15:39pm

Deeksha Shenoy

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2 solutions

Solution 1

Getting information about the hardware installed on a system (and its operational parameters) is a function controlled by the drivers and operating system. C++, or any programming language, does not have calls to directly interface to hardware installed. Everything is processed via the OS's calls that allow you access to the information (i.e. the APIs).

Here's an image of what I'm referring to:
http://upload.wikimedia.org/wikipedia/commons/e/e1/Operating_system_placement.svg[^]

Posted 19-Jun-11 15:15pm

Albert Holguin

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thexcodec 19-Jun-11 22:27pm

ok that makes sense, but then how does programs like CPU-z get this information then? They sell a program SDK that you can use, but that SDK must be built by a programming language.

Albert Holguin 20-Jun-11 0:04am

it simply accesses the appropriate APIs... I wouldn't buy an SDK for this...

thexcodec 20-Jun-11 0:09am

what are the appropriate API calls then. I have searched google and MSDN for hours and hours and found no such answers. the Win32_ type API calls don' do it.

Albert Holguin 20-Jun-11 19:22pm

http://msdn.microsoft.com/en-us/library/aa394373%28VS.85%29.aspx

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Harmanjeet Singh · Accepted Answer · 2011-06-20T10:58:00

Solution 2

I am not agree with the above solution as it says no to your question. I worked at OS level. the thing you require can be done using the concept Device Driver Programming in windows, using which you can even do firmware level programming.. :)

Posted 20-Jun-11 10:58am

Harmanjeet Singh