R objects can disappear if they are garbage collected; can they move, i.e., change their location in memory?
I don't see any indication this might happen in "Writing R Extensions" or "R Internals". But I'd like to be sure. Context: Rmpi serializes objects in raw vectors for transmission by mpi. Some send operations (isend) return before transmission is complete and so need the bits to remain untouched until transmission completes. If a preserve a reference to the raw vector in R code that will prevent it from being garbage collected, but if it gets moved that would invalidate the transfer. I was just using the blocking sends to avoid this problem, but the result is significant delays. Thanks. Ross Boylan ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
