I understand your point. But that won't solve portability issue, because I bet their pthread API will be available on VS2015 (if at all). No portability for VS2

I understand your point. But that won't solve portability issue, because I bet their pthread API will be available on VS2015 (if at all). No portability for VS2013 or less. For my code I simply just wrap the native threading api - posix or win32. It's not a big deal.