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by jclulow 759 days ago
The Windows mechanisms you're mentioning were also added over the course of many, many years. Much of Windows also happened a long time after UNIX signals were invented.

If you're including all that other stuff, it's probably fair to include all of the subsequent development of notification mechanisms on the UNIX side of the fence as well; e.g., poll(2), various SVR4 IPC primitives, event ports in illumos, kqueue in FreeBSD, epoll and eventually io_uring in Linux.
2 comments
flykespice 758 days ago
Except much of these UNIX later development were done by their derivatives and are often available with certain degree of incompatibility among them (or not even at all)
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jkrejcha 758 days ago
Yeah, it definitely is (especially since SIGIO is a thing :)). Even the Unix signals had more added to them over time (SIGWINCH and friends iirc came from the BSDs).

A lot of the mechanisms are very OS specific but I do think they're good comparisons to have with signals as well.

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