lukeh

6 ms·

61.
by lukeh 1y ago
io_uring can also use an eventfd to signal you need to check the completion queue. We use this with libdispatch to run a clang block on completion (the block is stored in the user_data). Admittedly this is a very specific use case.
62.
by lukeh 1y ago
Context: I’m working on a series of patches to support MDIO-less configuration of mv88e6xxx switches. They have not been submitted to netdev yet as they’re dependent on other unsubmitted patches from another kernel developer. The code above
63.
by lukeh 1y ago
This is the fix. The bug commit was squashed. I don’t really know what I need to prove here, except that Claude Code helped identify an issue and fix it.
64.
by lukeh 1y ago
Sure. It was an uninitialized variable in the retry loop below. Fixed now. https://github.com/PADL/linux/commit/b83b9619eecc02c5e95a1d3...
65.
by lukeh 1y ago
I used Claude Code to review a kernel driver patch last week. It found an issue that was staring me in the face, indeed one I would’ve expected the compiler to flag.
66.
by lukeh 1y ago
Yes, since NEXTSTEP.
67.
by lukeh 1y ago
I stand corrected, very interesting!
68.
by lukeh 1y ago
Also was the foundation of Blue Box if I remember right. (And QuickTime’s portability layer was for Carbon.)
69.
by lukeh 1y ago
If you are ever in Tallinn, it’s well worth the visit to the Arvo Pärt Centre.
70.
by lukeh 1y ago
When I was an intern at Apple in late 1997, my main machine was a PA RISC workstation running OPENSTEP for Mach (can’t recall which version). It was a lot faster than the PowerPC I had on my desk so I did much of my development on that befo
71.
by lukeh 1y ago
We do something similar for the UI for our audio hardware product. AES70 control messages are sent over Flutter platform channels to a Swift backend. The glue is open source - GitHub.com/PADL/FlutterSwift.
72.
by lukeh 1y ago
This was really community driven, not by Apple.
73.
by lukeh 1y ago
I like that last sentence!
74.
by lukeh 1y ago
Well, it’s probably fine but, it’s an audio application where metering (not audio) is delivered from a control plane process to a UI process. Lower latency is better. But haven’t measured it.
75.
by lukeh 1y ago
Does modern Linux have anything close to Doors? I’ve an embedded application where two processes exchange small amounts of data which are latency sensitive, and I’m wondering if there’s anything better than AF_UNIX.
76.
by lukeh 1y ago
Also using it in an embedded Linux project [1]. 75% of code written for this project is Swift. The rest is Dart and C/C++. It’s a productive language. [1] https://forums.swift.org/t/an-embedded-audio-product-built-
77.
by lukeh 1y ago
AsyncExtensions implements many Combine-like patterns in structured concurrency.
78.
by lukeh 1y ago
Manual page says Mac OS X 10.3.
79.
by lukeh 1y ago
Page 36, very droll.
80.
by lukeh 2y ago
Windows having multiple C libraries has its own pain points, in particular it's difficult to ship binary libraries that return allocated memory to their consumer (you either need to have the library consumer allocate the memory, which
81.
by lukeh 2y ago
Things I like about Swift: works great on Linux, fun to write in, excellent interoperability with C, C++ and even Java. Thinks I like less: compile times, binary size, runtime type introspection overhead (Codable performance was killing our
82.
by lukeh 2y ago
More and more, and Foundation is now sharing a codebase between Darwin and non-Darwin platforms for many types now.
83.
by lukeh 2y ago
https://www.timebeat.app/ Also making some very nice stuff at great price points.
84.
by lukeh 2y ago
Sure, but that’s not relevant in the timeline of the OP.
85.
by lukeh 2y ago
Just FYI to the article, more recent versions of CF are available as part of swift-corelibs-foundation.
86.
by lukeh 2y ago
Sun paid an absolutely fortune for Cobalt if I remember right!
87.
by lukeh 2y ago
Swift can be just as fast as C or C++. The danger, in my experience, is that it's not always clear what the performance implications of the language's many convenient abstractions are. (A random example, I recently improved one co
88.
by lukeh 2y ago
Also Yocto supports systemd. I’m using it in my build.
89.
by lukeh 2y ago
I just use git submodules because, whilst they can be frustrating, it's a workflow I'm familiar with. Other options would be kas or gclient.
90.
by lukeh 2y ago
Yeah, I was a bit scared off by it and both the terminology and the curious mixing of Python and bash can be a bit confusing. But it’s powerful and also very extensible without (generally) having to fork upstream layers.

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