On Thu, Dec 04, 2014 at 09:45:46PM +0000, One Thousand Gnomes wrote: > > anywhere in that translation unit. After all, any non-static function > > in that translation unit might be called from some other translation > > unit that -did- use locking or whatever. > > > > I will let you know how it goes. ;-) > > It breaks DEC10 ;-) To say nothing of CDC 6600 systems lacking the compare-move unit. ;-) > If there is kickback over things like optimisation perhaps the gcc > maintainers could at least consider something like > > int __attribute((threadsafe)) fred; > > ?? Not needed for recent gcc versions -- both the C11 and C++11 standards require that different threads be permitted to independently access different variables, where "different" means "no bits of the two variables residing in the same byte". From what I can see, this would mean that a conforming pre-EV56 Alpha C11 compiler would need to use LDL_L and STL_C to carry out 8-bit and 16-bit stores. ;-) Thanx, Paul -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
