How to programmatically get the CPU cache page size in C++?

Question

I\'d like my program to read the cache line size of the CPU it\'s running on in C++.

I know that this can\'t be done portably, so I will need a solution for Linux an

Answer 1

For x86, the CPUID instruction. A quick google search reveals some libraries for win32 and c++. I have used CPUID via inline assembler as well.

Some more info:

• http://www.intel.com/Assets/PDF/appnote/241618.pdf
• http://softpixel.com/~cwright/programming/simd/cpuid.php