question on powerpc pthread mutexes and memory barriers

Chris Friesen cfriesen at nortel.com
Fri Jul 10 07:19:39 EST 2009


Hi all,

This probably isn't the right place to ask about this, but does anyone
know where the implied memory barrier happens for pthread mutexes in the
uncontended case?  I'm looking at the glibc code and I don't see any
barrier instructions for mutexes, only semaphores and spinlocks.

Thanks,

Chris


More information about the Linuxppc-dev mailing list