If you want to be able to control an arbitrary long-running function, a safe way is to run it in a separate process. That way you can safely terminate it anytime you want. Of course this opens up a lot of other issues .... :)
On Wed, Jan 22, 2014 at 9:15 PM, Mark Engelberg <[email protected]>wrote: > I think the fib example is a good one in the sense that you are dealing > with an already function that takes a long time, and isn't written as a > loop. > > But in general, I want to solve the problem for an arbitrary long-running > computation, for example, a call into a library that you don't control. > > One of the flagship examples for core.async is the example where you try > two different engines to look something up, return the first one or > timeout. Similarly, I want to try to solve a computational problem two > different ways, and take the first solution or timeout. But of course, > that only works if I can stop the computation from spinning CPU once I > already have a solution (or timeout). > > Rewriting the underlying algorithms to constantly check for an interrupt > is not an option. > > > > > On Wed, Jan 22, 2014 at 11:31 AM, Praki Prakash > <[email protected]>wrote: > >> What is the task doing? If it is in a tight loop, it must check >> explicitly whether the interrupt flag is set and abort. If it is waiting on >> some resource, it will receive InterruptedException. >> >> Regards, >> Praki Prakash >> >> >> On Wed, Jan 22, 2014 at 11:20 AM, Mark Engelberg < >> [email protected]> wrote: >> >>> On Wed, Jan 22, 2014 at 2:51 AM, Jozef Wagner <[email protected]>wrote: >>> >>>> You can put the computation into a future, and cancel the future after >>>> the timeout. >>>> >>> >>> I experimented with that, but it didn't seem to work. I suspect that >>> "canceling a future" doesn't really do what I think it should do. I would >>> appreciate some further clarity on how future cancellations work, and if >>> someone thinks it applies here, would like to see concretely how to do it. >>> >>> -- >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Clojure" group. >>> To post to this group, send email to [email protected] >>> Note that posts from new members are moderated - please be patient with >>> your first post. >>> To unsubscribe from this group, send email to >>> [email protected] >>> For more options, visit this group at >>> http://groups.google.com/group/clojure?hl=en >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "Clojure" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> -- >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to [email protected] >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> [email protected] >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to [email protected] > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to [email protected] Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
