John Nagle <[EMAIL PROTECTED]> writes: > If locking is expensive on x86, it's implemented wrong. > It's done right in QNX, with inline code for the non-blocking case.
Acquiring the lock still takes an expensive instruction, LOCK XCHG or whatever. I think QNX is usually run on embedded cpu's with less extensive caching as these multicore x86's, so the lock prefix may be less expensive in the QNX systems. -- http://mail.python.org/mailman/listinfo/python-list
