Re: MPS GC and its implications

["Gerd Möllmann" <gerd.moellmann@gmail.com>]

Helmut Eller <eller.helmut@gmail.com> writes:

>> What am I missing?
>
> Memory barriers could be used for synchronization.  When the mutator
> hits a barrier, it executes the signal handler.  The signal handler asks
> the collector what to do.  Essentially synchronizing those two.

Exactly.

> I don't know if MPS works quite like this, but it could.  I'm not
> worried about this issue.

Me neither. That's the most important point (to me) of barriers. How
barriers are implemented differs (it's not always VM stuff), but the
purpose is always the same.