Messages in this thread | | | From | "Stephen C. Tweedie" <> | Date | Wed, 15 Sep 1999 01:15:43 +0100 (BST) | Subject | Re: POSIX aio vs completion ports |
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Hi,
On Sun, 12 Sep 1999 14:55:05 -0400 (EDT), Chuck Lever <cel@monkey.org> said:
> On Sun, 12 Sep 1999, Alan Cox wrote: >> > * As far as I know, there is no way to allocate a POSIX real time signal >> > number in a thread safe manner. There is no equivalent to the socket() >> > system call--one must just pick a number and hope that no other thread >> > in the same process just picked the same number. >> >> So you write a library routine for it. Now that is hard. Its a non kernel >> issue.
> no, it isn't a non-kernel issue. this must be done atomically wrt the > user level,
No, it must be atomic between threads. No big deal, the user-mode code can use a lock. It's a non-kernel issue.
--Stephen
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