One of the most anticipated features of Mac OS X Leopard amongst the technical community was the port of Sun's DTrace utility for application and system profiling. DTrace is a powerful, low-level dynamic tracing framework that allows system administrators and developers to trace applications for tuning or troubleshooting purposes.
Recently, Adam Leventhal, one of DTrace's initial developers, discovered that Apple's implementation creates a way for a program to exclude itself from being traced. Namely, he was unsuccessful at tracing iTunes, and found that Apple had added a method of disabling probing on certain applications defined with the directive P_LNOATTACH.
Wow. So Apple is explicitly preventing DTrace from examining or recording data for processes which don't permit tracing. This is antithetical to the notion of systemic tracing, antithetical to the goals of DTrace, and antithetical to the spirit of open source. I'm sure this was inserted under pressure from ISVs, but that makes the pill no easier to swallow.
Since the initial publication of the blog entry last week, the story has begun to pop uparoundthe mac web.
The practice is not entirely new to Apple. A commenter on Adam Leventhal's blog noted that Apple used the same directive to prevent GDB tracing on iTunes. Additionally, the implementation of this directive appears to be limited to iTunes (for the moment?), so many are speculating that the move is to protect Apple's FairPlay DRM.
To present an alternate view, Apple has extended Java, Ruby, Python, and Perl to include DTrace support, and Apple has built a GUI front-end called Instruments. Also the issue may eventually become moot with Apple's stated desire to move towards DRM-free music (though DRM video remains common).
Tuesday September 7, 2021 9:03 am PDT by Juli Clover
Apple today announced that it will be holding a special event on Tuesday, September 14 at 10:00 a.m. The event will take place at the Steve Jobs Theater on the Apple Park campus in Cupertino, California.
As with WWDC and last year's fall events, this new event will be held digitally with no members of the media invited to attend in person. Apple will likely provide pre-taped segments for...
Apple will retain the Lightning connector on the iPhone for the "foreseeable future," with no intention of switching to USB-C, according to reliable analyst Ming-Chi Kuo.
In spite of much of the industry moving toward USB-C, Apple will not be using it to replace the Lightning connector on the iPhone 13, or indeed on any iPhone model for the time being. In a note seen by MacRumors yesterday,...
The iPhone 12 and iPhone 12 Pro arrived in October 2020 in a range of color options, with entirely new hues available on both devices, as well as some popular classics. The 12 and 12 Pro have different color choices, so if you have your heart set on a particular shade, you might not be able to get your preferred model in that color.
iPhone 12 mini and iPhone 12
The iPhone 12 mini and iPhone...
Wednesday August 25, 2021 2:42 am PDT by Tim Hardwick
Apple may be planning to launch the iPhone 13 on Friday, September 17 and third-generation AirPods on Thursday, September 30, according to an image of an e-commerce app discovered by Chinese language site IT Home.
The screenshot, originally posted by Weibo account @PandaIsBald, suggests all four iPhone 13 models will go on sale on September 17, followed by the AirPods 3 on September 30....
Wednesday February 3, 2021 3:09 pm PST by Juli Clover
YouTube is planning to stop supporting its YouTube app on the third-generation Apple TV models, where YouTube has long been available as a channel option.
A 9to5Mac reader received a message about the upcoming app discontinuation, which is set to take place in March.Starting early March, the YouTube app will no longer be available on Apple TV (3rd generation). You can still watch YouTube on...
To commemorate the tenth anniversary of the iPhone, Apple marketing chief Phil Schiller sat down with tech journalist Steven Levy for a wide-ranging interview about the smartphone's past, present, and future.
The report first reflects upon the iPhone's lack of support for third-party apps in its first year. The argument inside Apple was split between whether the iPhone should be a closed...
We've seen a lot of teasers about the Beats Studio Buds over the past month since they first showed up in Apple's beta software updates, and today they're finally official. The Beats Studio Buds are available to order today in red, white, and black ahead of a June 24 ship date, and they're priced at $149.99.
The Studio Buds are the first Beats-branded earbuds to truly compete with AirPods...
Wednesday September 25, 2019 12:02 pm PDT by Juli Clover
Apple has teamed up with Maroon 5 to add the group's new song "Memories" to the Memories feature in the Photos app, allowing it to be used for photo slide show creations, reports Billboard.
"Memories" will be available as a soundtrack option for a limited time and it is available to iPhone and iPad users running the latest iOS 13 and iPadOS software.
Memories in the Photos app are created ...
Popular writing app Ulysses today received its 22nd major release, introducing new publishing features and additional options for users to customize the visual appearance of their writing environment.
As well as providing a focused writing environment, Ulysses offers ways to publish texts from within the app to various blogging platforms. Version 22 adds the ability to publish to Micro.blog, ...
Thursday February 4, 2021 1:58 am PST by Tim Hardwick
Serif today announced across-the-board updates for its popular suite of Affinity creative apps, including Affinity Photo, Affinity Designer, and the Apple award-winning Affinity Publisher for Mac, all of which were among the first professional creative suites to be optimized for Apple's new M1 chip.
"After another year which saw record numbers of people switching to Affinity, it's exciting to...
