http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47031
--- Comment #8 from js-gcc at webkeks dot org
2011-01-08 16:14:28 UTC ---
Yeah, but Linux is just one of the many OSes supported by GCC. And I don't know
of any other OS that uses futexes fors pthread mutexes.
> It would still be good to try a w
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47031
--- Comment #7 from Nicola Pero 2011-01-08 11:39:38
UTC ---
> Usually, the lock is not held. If it is, you do a little trick: You spin 10
> times and if you still could not get the lock, it's likely the current thread
> is blocking another threa
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47031
--- Comment #6 from js-gcc at webkeks dot org
2011-01-07 18:43:15 UTC ---
> This means that, assuming that spinlocks are infinitely faster than mutexes,
> in
> the best possible conditions they would speed up the accessors (or, at least,
> the s
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47031
--- Comment #5 from Nicola Pero 2011-01-07 18:23:10
UTC ---
I tried the same benchmark using pthread_spin_lock() and pthread_spin_unlock();
it takes about 11.4 seconds.
So, that means the time required to execute an accessor can go down to about
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47031
--- Comment #4 from Nicola Pero 2011-01-07 17:56:01
UTC ---
Jonathan
thanks for your comments - they are very useful and we certainly want to look
at performance. ;-)
I'm not terribly convinced by using spinlocks in this context, but I'm happy
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47031
--- Comment #3 from js-gcc at webkeks dot org
2011-01-01 12:06:56 UTC ---
> The problem is that property accessors are basically general purpose routines
that may be used in the most varied situations.
It does not matter very much in which situa
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47031
--- Comment #2 from Nicola Pero 2010-12-29 16:10:51
UTC ---
I'm actually not very convinced by this any more; we probably need some
benchmarks. ;-)
The problem is that property accessors are basically general purpose routines
that may be used in
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47031
Nicola Pero changed:
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