detecting the memory page size

Question

Is there a portable way to detect (programmatically) the memory page size using C or C++ code ?

Answer 1

C doesn't know anything about memory pages. On posix systems you can use long pagesize = sysconf(_SC_PAGE_SIZE);

Answer 2

Since Boost is a pretty portable library you could use mapped_region::get_page_size() function to retrieve the memory page size.

As for C++ Standard it gives no such a possibility.

Answer 3

It is entirely platform dependent which address-ranges are mapped to which page-sizes. Further the pagesize is not system-wide. You can allocate memory from different page-size regions according to the use case. And you can even have platforms without any virtual memory managment.

So, code handling this topic must be platform specific.