I was reading the book Windows Internals 6th Edition Part 1, Chapter 5, Thread Selection and it states the following "Whenever a logical processor needs to pick the next thread to run, it calls the KiSelectNextThread scheduler function. " I tried searching Google and Microsoft and could not find any help. Can someone tell me where I can find documentation on this API ? I would also like to find documentation on all available API that the kernel scheduler has to offer. Thanks in advance Victor
Hi,
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You can find source code of undocumented functions in ReactOS, which uses similar code as the NT Kernel :
thrdschd.c
Thank you for the reply. Just how similar is ReactOS to Windows as far as the kernel goes ?
I don't know ReactOS; I just know that its Kernel code comes from NT Kernel code (some improvements have been done in Windows since NT, from Windows 7 and above)
I did have one further question to ask. If you take the following sentence "Whenever a logical processor needs to pick the next thread to run, it calls the KiSelectNextThread scheduler function. " literally its saying that the CPU calls this function but how does the CPU actually makes this call ?
Hi,
You may refer to the following link for more info:
https://stackoverflow.com/questions/5570893/how-does-a-system-call-translate-to-cpu-instructions
Please note: Information posted in the given link is hosted by a third party. Microsoft does not guarantee the accuracy and effectiveness of information.
Hope above information can help you.
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