user-space locks

[Vlad GALU]

On 3/10/07, Kip Macy <kip.macy at gmail.com> wrote:
> umtx
>

   Is it safe/recommended to use spinlocks, like in jemalloc, for very
small portions of code? I'm particularly interested in protecting
writes to a couple of word sized ints on amd64, so the critical
section wouldn't be longer than two assignments. Of course, I could
use a lockless queue for my purposes, but I'm asking anyway.

> On 3/9/07, Peter Holmes <peter_holmes2003 at yahoo.com> wrote:
> > Does FreeBSD have anything similar to Futexes for
> > Linux.
> >
> > Thanks,
> > Peter
> >
> >
> >
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