Memory barriers in userspace? (Linux, x86-64)

Question

It is easy to set memory barriers on the kernel side: the macros mb, wmb, rmb, etc. are always in place thanks to the Linux kernel headers.

How to accomplish this on th

Answer 1

Simply borrowing barriers defined for Linux kernel, just add those macros to your header file: http://lxr.linux.no/#linux+v3.6.5/arch/x86/include/asm/barrier.h#L21 . And of course, give Linux developers credit in your source code.