On 26 April 2011 at 21:41, Steve Lianoglou wrote: | We kind of lost context of the original post, but:
Did we? | On Tue, Apr 26, 2011 at 8:19 PM, Christian Gunning <x...@unm.edu> wrote: | Just to clarify the original intent -- the impression I got from the | OP is that he actually wanted to fire off a thread to run in the | background and have the user continue to use R while the background | process finishes, so ... he doesn't want R to wait for it to return. | | I'm not an R-internals/plumbing guru, but if I had to guess, I'd say | that this is an "out of bounds" use case and I'm guessing will be | painful (impossible(?)) to get working as the OP intended ... I'd be | happy to be proven wrong, though. | | I'm not sure what a suitable workaround would be -- I wonder if the | C(++) code you call down into can spawn a thread that then uses | RInside to fire up its own R process, configure it w/ the appropriate | vars/data, run the job in that single threaded R and just save the | results to some predertimed data file (not sure if that's the right | use case for RInside, either, I'm guessing) -- all the while control | will be returned to the users running R workspace. | | At that point, though, maybe you'd just make a command line wrapper to | run your job from the shell and forget about invoking background | processes from within R altogether. | | Just thinking out loud .. Christian actually put it well: a) R is single-threaded b) You can leave R and start multi-threaded code at a well defined entry point. c) You can do your multithreaded work. I would recommend not to call R at this point. d) When done with multithreaded code, return to R and its control flow there. That is a simple model, and it should work. Dirk | -steve | | -- | Steve Lianoglou | Graduate Student: Computational Systems Biology | | Memorial Sloan-Kettering Cancer Center | | Weill Medical College of Cornell University | Contact Info: http://cbio.mskcc.org/~lianos/contact | _______________________________________________ | Rcpp-devel mailing list | Rcpp-devel@lists.r-forge.r-project.org | https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel -- Gauss once played himself in a zero-sum game and won $50. -- #11 at http://www.gaussfacts.com _______________________________________________ Rcpp-devel mailing list Rcpp-devel@lists.r-forge.r-project.org https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
