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by native_samples
1611 days ago
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Because they do a lot more? The video demo is the happy path. It's perhaps hard to notice things like the image viewer supporting drawing things on the image but not supporting saving the resulting file, or the lack of alt-tab. Also, Essence is basically a Win32-like system (with some very small use of C++ but e.g. using char* instead of std::string). The kernel is handling graphics and the windowing system, like it used to do in Windows. Even the eyedropper you saw has kernel mode support. https://gitlab.com/nakst/essence/-/blob/master/kernel/window... Yes you can get very efficient code this way but only at a cost of low programmer productivity / reliability / security, especially as the code scales up to more than one developer. For a hobby OS it doesn't matter. For a commercial OS it's not good enough, hence Apple/Microsoft's investment in .NET and Swift. These consume more resources but make it easier for programmers to avoid mistakes and work together. Don't get me wrong. I'm loving the style, the panache, the clean code, the ambition. Fantastic project. But it's a bit naive to ask "why can't all operating systems be like that?". Operating systems written by one guy will inevitably be fast and light compared to an OS that's 30 years old and which has 10,000x the number of features (at a conservative guess). |
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