They should come in via signalfd unless they're the moral equivalent of a non-maskable interrupt.

And for people who want to use something other than Linux?

	▲	lmz 18 hours ago \| parent [-]
		BSD kqueue, Solaris ports.

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charcircuit a day ago | parent | prev [-]

That is also good, but requires apps be rewritten to read from signalfd. With the separate thread approach you can get away without having to rewrite programs.

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inigyou 12 hours ago | parent [-]

Incorrect. With the separate thread approach you added a lot of new race conditions.

	▲	charcircuit 5 hours ago \| parent [-]
		In practice I don't think there would be that many. You could even pause execution of the thread that would have gotten the signal to make it even safer.