On Aug 20, 2010, at 12:14 PM, Carl Martin Grewe wrote: > Dear R developers, > > i've got a question concerning an embedded R instance. I called the > initialization routines as seen in the "writing extensions" guide > (Rf_initialize, setup_Rmainloop and R_ReplDLLinit). I also changed the > function callback pointer of readconsole and writeconsoleex to my local > functions. > > when i call mainloop there is no problem and the commands are evaluated as > expected. because i don't want R to run in an own thread and my app should > keep the control i want to use repldlldo1. within the readconsole as long as > i copy commandlines containing valid R commands function to R's buffer all > things are fine. but when i copy a non valid command, R singals segfault > after passing the error message, that the given object is not valid. this > happens in call to eval(R_CurrentExpr, rho) in repldlldo1. i tried to > comapare both ways (mainloop vs. repldlldo+repldllinit) but actually cannot > find a significant difference. >
I fear we can't help you without a reproducible example. One thing to keep in mind is that R_ReplDLLinit uses setjmp to setup the top-level context so you have to make sure you're not using any local variables that could be on the stack from R_ReplDLLdo1 as it will get lost (and function calls of course). Cheers, Simon > can anyone please help me with this problem, i'm stucked with this because i > don't know the inside of R and the datastructures. > > > some additional information: > c++, runtime loaded libR, 64-bit linux, 2.11.1 release (but also happens with > 2.10.1) > > look farward to hearing from you. > > thanks, > martin > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
