Date: Wed, 5 Jan 2000 13:22:00 -0500 (EST) From: Zhihui Zhang <zzhang@cs.binghamton.edu> To: freebsd-hackers@freebsd.org Subject: Post a signal within an interrupt handler Message-ID: <Pine.GSO.3.96.1000105131504.22255A-100000@sol.cs.binghamton.edu>
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While reading the code vfs_aio.c, I find out some comments saying it is not safe to post a signal from the interrupt handler aio_physwakeup(). So it calls timeout(9) within that handler and let the timeout routine to post the signal. I do not understand this. Isn't the timeout mechanism also driven by an interrupt (clock)? Any enlightment is appreciated. -Zhihui To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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