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).
Thursday December 5, 2024 11:48 am PST by Juli Clover
Apple seeded the release candidate version of iOS 18.2 today, which means it's going to see a public launch imminently. Release candidates represent the final version of new software that will be provided to the public should no last minute bugs be found, and Apple includes release notes with the RC launch.
The iOS 18.2 release notes provide a look at all of the new features that are coming...
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Apple is set to release iOS 18.2 in the second week of December, bringing the second round of Apple Intelligence features to iPhone 15 Pro and iPhone 16 models. This update brings several major advancements to Apple's AI integration, including completely new image generation tools and a range of Visual Intelligence-based enhancements. There are a handful of new non-AI related feature controls...
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In 2025, Apple is planning to debut a thinner version of the iPhone that will be sold alongside the iPhone 17, iPhone 17 Pro, and iPhone 17 Pro Max. This iPhone 17 "Air" will be about two millimeters thinner than the current iPhone 16 Pro, according to Bloomberg's Mark Gurman.
The iPhone 16 Pro is 8.25mm thick, so an iPhone 17 that is 2mm thinner would come in at around 6.25mm. At 6.25mm,...
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Apple today seeded the second release candidate versions of upcoming iOS 18.2, iPadOS 18.2, and macOS 15.2 updates to developers and public beta testers for testing purposes, a week after releasing the first RCs. The first iOS 18.2 RC had a build number of 22C150, while the second RC's build number is 22C151. Release candidates represent the final version of beta software that's expected to see a ...
Friday December 6, 2024 5:14 am PST by Tim Hardwick
Apple's next-generation iPhone 17 lineup may bring some of the most significant display improvements we've seen in recent years. While the iPhone 17 series isn't expected until late 2025, multiple rumors suggest Apple is working on substantial screen upgrades across its entire smartphone range.
From enhanced refresh rates to advanced materials and improved power efficiency, these display...
Thursday November 28, 2024 3:30 am PST by Tim Hardwick
Despite being released over two years ago, Apple's AirPods Pro 2 continue to dominate the wireless earbud market. However, with the AirPods Pro 3 expected to launch sometime in 2025, anyone thinking of buying Apple's premium earbuds may be wondering if the next generation is worth holding out for.
Apart from their audio and noise-canceling performance, which are generally regarded as...
Friday December 6, 2024 7:43 am PST by Joe Rossignol
The U.S. Court of Appeals for the Ninth Circuit this week upheld a lower court's dismissal of a lawsuit alleging that Apple illegally deceived customers into paying for iCloud storage, according to a court filing. The decision was reported by Law360.
The lawsuit alleged that Apple deceived customers into purchasing iCloud-enabled devices by misleading customers into believing that they can...
2024 is rapidly drawing to a close, but Apple isn't quite done with releases for the year as iOS 18.2 and related operating system updates are arriving very shortly. Apple Intelligence is a major focus for these updates, but there are some other tweaks and improvements arriving for all users.
Looking toward hardware rumors, discussion continues around Apple's work on a foldable iPhone, an...
