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by p_l
1484 days ago
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MacOS X essentially started by updating the NeXT core to latest OSFMK distribution, which was hybrid system (bsd server integrated into kernel space) powering the BSD alternative to SystemV - OSF/1 (most famous of them being DEC OSF/1 aka Digital Unix aka Compaq Tru64). They applied bits of FreeBSD to the bsd server code and over time improved its concurrency, but considerable portion of XNU is code that is called by bsd server but not part of bsd server (IOKit, among other things) |
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