achivetta

7 ms·

1.
by achivetta 9y ago
64-bit nanosecond values are actually pretty common on Darwin already. See e.g. clock_gettime_nsec_np(3).
2.
by achivetta 9y ago
It might not be the memory concern it once was, but today it might very well be a power concern. Modern laptop display pipelines can save power if they don't have to redraw any of the screen: constantly updating status bar animations
3.
by achivetta 10y ago
There's code for it in Darwin's libmalloc, but it's not exposed as API. reallocarray() has some difficulties as an interface, mostly inherited from realloc(). I'm a bigger fan of reallocarr(), but that's NetBSD onl
4.
by achivetta 10y ago
Until signal handlers get involved...
5.
by achivetta 11y ago
You give the HSM the pin, it returns the key used to encrypt the data, applying the rules to that interaction with you. Emulating the HSM doesn't help since it is that phone's specific HSM with the key it knows that you need to a
6.
by achivetta 11y ago
That won't be editable anymore. But you could disable SIP from recovery mode, make the change, then re-enable it.
7.
by achivetta 12y ago
Do you have a bug number, by chance? (If not, consider filing one at bugreporter.apple.com)
8.
by achivetta 12y ago
As far as "modern signal handling" goes: On OS X, you can also just create a dispatch source of type DISPATCH_SOURCE_TYPE_SIGNAL. If your code already uses dispatch, this is much easier than trying to wire up to kqueue directly.
9.
by achivetta 12y ago
Who is suggesting that users would carry beacons?
10.
by achivetta 12y ago
I think the hesitations about passphrase being subject to brute force, rainbow table, etc. are warranted, but I have another concern: If my passphrase gets compromised, I have to retire the keypair. That's true of a key file with curre
11.
by achivetta 12y ago
Thinking aloud: could one build a combination fossil fuel and solar steam-powered turbine? When the sun is out, you use (supercritical) steam as they describe being able to generate. If the sun goes away, you feed the same turbine with st
12.
by achivetta 12y ago
Amazingly, this sort of use-after-free causes compatibility problems for allocator writers even today. Imagine if you change the implementation of malloc() such that smaller allocations get their own mmap() region rather than being stuffed
13.
by achivetta 13y ago
Is this perhaps because ruby calls it a case statement instead of a switch statement?
14.
by achivetta 13y ago
Keep in mind: This class is part of a conservatory-style BFA program. These students are already, or will soon be, custom to public critiques. And learning how to accept public criticism, positive and negative, is explicitly a goal of man
15.
by achivetta 13y ago
It looks like there's a few different exemptions: http://www.dol.gov/whd/regs/compliance/whdfs36.htm
16.
by achivetta 13y ago
What? I'm pretty sure it's not available until the fall.
17.
by achivetta 13y ago
Does anyone know if either of these platforms support hardware accelerated H.264 decoding? And, do either HTML5 or Flash in these environments support using it?
18.
by achivetta 14y ago
Go watch this video: http://www.heart.org/HEARTORG/CPRAndECC/HandsOnlyCPR/Hands-O... That's all you need to know as a lay-rescuer. And if you forget, the 911 operator will walk you through it. ( Or, if you'd rather: http://supersexycpr.
19.
by achivetta 14y ago
If you are going to post online about a problem with an Apple product, I personally believe that it's a good idea to also file a bug ( http://bugreporter.apple.com ) and include a bug number in your post. Doubly so if you submit it to HN.
20.
by achivetta 14y ago
Bug number?
21.
by achivetta 14y ago
This seems like an intentionally misleading title. I think the many people who work in "no cameras" facilities might love the option of a camera phone with an employer's profile that makes the phone safe to bring into the facility. This is
22.
by achivetta 14y ago
If you mmap a file, and then access the mmap'ed region, pulling in the pages of the file from disk is considered paging the file in. Watch the output of fs_usage to see examples of this.
23.
by achivetta 15y ago
A jar of coins and... pajamas.
24.
by achivetta 15y ago
"Hi there, I was retyping a link to my invoice and screwed up a digit. It took to someone else's page, which seems odd. For example, my link was <link> and I accidentally typed <other link>. Not sure if this is a problem
25.
by achivetta 16y ago
I wonder, is the glass just holding the phone at the right angle for the polarity of the phone's antenna and the available signal to match up? If so, this trick wouldn't likely work places other than that restaurant.