David Peixotto schrieb:
On Sep 9, 2010, at 6:37 AM, Simon Marlow wrote:
On 09/09/2010 10:39, Christian Maeder wrote:
Christian Maeder schrieb:
Hi,
we call from our haskell application the metis prover via
System.Process.readProcessWithExitCode "metis" filename ""
However, we are not able to get rid of this process if metis does not terminate by itself. In particular, wrapping this call into a System.Timeout.timeout does not work. timeout works so far as it is possible to start another action, but the continuing metis process still blocks the whole system.
C.
Any suggestions how we should handle this ideally portably but first of all under unix. (ghc-6.12.3) Take a look at the timeout program in GHC's test suite:
This looks pretty complicated. Did no one else needed this? Isn't it easier to put the application into a wrapper script and call the script from haskell?
In case it's not obvious, I believe this has to be compiled with -threaded to get the desired behavior.
-David
Yes, we do use -threaded. Christian