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Using the Windows API, you can always call 'SetThreadIdealProcessor()<wbr />' (<a href="http://msdn.microsoft.com/en-us/library/ms686253.aspx" rel="ugc nofollow">http://msdn.microsoft.com/en-us/library/ms686253.aspx</a>) after you created the thread. You might want to create it in a 'suspended' state, set the processor and then resume it. For the amount of cores, there is 'GetSystemInfo()' (<a href="http://msdn.microsoft.com/en-us/library/ms724381.aspx" rel="ugc">http://msdn.microsoft.com/en-us/library/ms724381.aspx</a>). The structure this API fills in has a member called 'dwNumberOfProcessors' which will tell you the number of cores available.
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Using the Windows API, you can always call 'SetThreadIdealProcessor()' (http://msdn.microsoft.com/en-us/library/ms686253.aspx [http://msdn.microsoft.com/en-us/library/ms686253.aspx]) after you created the thread. You might want to create it in a 'suspended' state, set the processor and then resume it. For the amount of cores, there is 'GetSystemInfo()' (http://msdn.microsoft.com/en-us/library/ms724381.aspx [http://msdn.microsoft.com/en-us/library/ms724381.aspx]). The structure this API fills in has a member called 'dwNumberOfProcessors' which will tell you the number of cores available.

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I'm writing an image processing algorithm to process a bunch of completely separate images. In an ideal world, I would like to query the operating system for how many cores it has available, and then run a thread on each core.<br />
<br />
Is there a way in C++ to query for how many cores are on the machine on which I am running?<br />
Can I spawn a thread for a particular core?<br />
<br />
Thanks!
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I'm writing an image processing algorithm to process a bunch of completely separate images. In an ideal world, I would like to query the operating system for how many cores it has available, and then run a thread on each core.

Is there a way in C++ to query for how many cores are on the machine on which I am running?
Can I spawn a thread for a particular core?

Thanks!

How does one spawn one thread for each core in C++ on Windows?

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Programming

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.

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