raising exceptions for signals
simonmarhaskell at gmail.com
Mon Feb 19 08:29:23 EST 2007
Bulat Ziganshin wrote:
>>> btw, how about using for *Haskell* code *default* signal handler that
>>> raise Haskell exception? i think that using signal handlers to process
>>> OS-generated events is just legacy from the C days. i.e. 'main'
>>> should be called by RTS inside code like this:
>>> mainThread <- myThreadId
>>> let onBreak event = do
>>> throwTo mainThread BreakException
>>> bracket (installHandler$ Catch onBreak) (installHandler) $ \oldHandler -> do
>>> (of course, this handles only ^Break and only on Windows)
>>> among other things, this should make signal handling portable between
>> Yes, we've discussed this in the past (e.g. there was a thread about this on the
>> haskell-prime list). I'm definitely in favour of doing something along these lines.
> how about adding such facility to ghc HEAD? i can write initial
> windows implementation and put it to discussion here or in ghc
I don't have a clear idea for the design, I'd have to go back and look at the
haskell prime discussion. Do you want to propose something?
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