On Fri, Nov 11, 2016 at 12:46 PM, Gergely Daróczi <daroc...@rapporter.net> wrote: [...] >> I've changed the above to *print* the gc() result every 1000th >> iteration, and after 100'000 iterations, there is still no >> memory increase from the point of view of R itself.
Yes, R does not know about it, it does not manage this memory (any more), but the R process requested this memory from the OS, and never gave it back, which is basically the definition of a memory leak. No? I think the leak is because 'stdin' is special and R opens it with fdopen(): https://github.com/wch/r-source/blob/f8cdadb769561970cc42776f563043ea5e12fe05/src/main/connections.c#L561-L579 and then it does not close it: https://github.com/wch/r-source/blob/f8cdadb769561970cc42776f563043ea5e12fe05/src/main/connections.c#L636 I understand that R cannot fclose the FILE*, because that would also close the file descriptor, but anyway, this causes a memory leak. I think. It seems that you cannot close the FILE* without closing the descriptor, so maybe a workaround would be to keep one FILE* open, instead of calling fdopen() to create new ones every time. Another possible workaround is to use dup(), but I don't know enough about the details to be sure. Gabor [...] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
