Messages in this thread |  | | From | (H. Peter Anvin) | Subject | Re: Async IO | Date | 30 Jan 1997 05:13:40 GMT |
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Followup to: <m23evo8f0g.fsf@frob.mlm.extern.lrz-muenchen.de> By author: Andi Kleen <andi@mlm.extern.lrz-muenchen.de> In newsgroup: linux.dev.kernel > > One problem currently is that Linux doesn't have enough signals. > In practive you can only use SIGUSR1 and SIGUSR2 for your async aio > stuff and that's usually not enough. Linuxthreads already needs SIGUSR1 > so you can't use it. You'll probably have to wait for full POSIX 1003.1b > signal support in Linux. >
We probably should create a couple of more signals... SIGUNUSED (31) is still available, SIGLOST (29) is commented out, signal number 0 is unused, and SIGPWR (30) basically only makes sense to init(8). I would suggest creating a SIGTHREAD reserved for Linuxthreads; that way it wouldn't have to eat up a user signal...
-hpa
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