[R] R garbage collection

Prof Brian Ripley ripley at stats.ox.ac.uk
Fri Mar 31 09:09:03 CEST 2006

This is very clearly an R-devel topic according to the posting guide, so I 
have answered it there.

On Thu, 30 Mar 2006, Jeff Henrikson wrote:

> r-help,
> The R manual lists two types of memory: transient and user-controlled.
> If I have transient blocks reachable from the globals only by traversal
> through user-controlled blocks, will they be correctly preserved?
> Secondly, what are the ways to mark user controlled blocks as "roots"
> for the garbage collector, so that transient blocks they reference stay
> uncollected?  So far I can only deduce that as long as the answer to my
> first question is yes, I can bind an arbitrary symbol to them in the
> global environment.  Is this the best way?
> Jeff Henrikson

> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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