On 6/17/2014 5:10 AM, Walter Bright wrote:
On 6/17/2014 1:59 AM, Nick Sabalausky wrote:
Keep in mind, for people in certain areas, the allure of a memory
management
system with no/minimal collection pauses, minimized memory
requirements and good
behavior in low-memory conditions (even if it all comes with a
non-trivial
overall performance cost and a little bit of care here and there) can
be VERY
strong. So, FWIW, that's the perspective where all this is coming from.
Oh, I totally understand where it's coming from.
Fair enough.
I'm trying to point out
that ARC is not a magic zero-cost system. Its costs are SUBSTANTIAL. But
in order to understand those costs, it is necessary to understand how
exception handling works.
Oh right, I definitely don't mean to imply it's any sort of "no cost"
deal. It's certainly all tradeoffs, of course. As you undoubtedly know,
for some things, GC's costs can be high, too. But like I've said, I'm an
ARC novice, so I'm just trying to gain an understanding of the extent of
ARC's costs since it does, at the very least, have some intriguing
properties.
