[R] save.image() error
ripley at stats.ox.ac.uk
Sun Apr 7 18:31:35 CEST 2002
On Sun, 7 Apr 2002, Marc R. Feldesman wrote:
> The "fix" in ?save.image solves the problem, but this seems to be a
> definite *issue* with Windows XP Pro. I took the identical .RData file
For you. I have never seen it on Windows XP Pro, and I use that as much
as 2000. And that includes a dual-processor XP machine.
We have had no other reports.
> from the XP machine and moved it onto a machine with Windows NT 4, and two
> others running Windows 2000 Pro. Neither of them evidence the problem
> "unfixed". The XP Pro machine is a 2.2 GHz P4 running 1024 MB RAM and a
> 120 GB Harddrive with about 100 GB free. BTW, logging out of the XP box
> doesn't result in the temp files being erased. Once created, I have to go
> in and manually delete them.
> How is the behavior of "File|Save Image" different
> from >save.image("a.file.image.name")? The former works without the "fix"
> while the latter fails unless I have the "fix" in place in the .RProfile
You have the sources .... It actually calls save.image(), so I don't
think it is different in any way. There is a difference between the cases
where the file already exists and when it does not.
> What is a "race" condition?
Two processes trying to access the same resource at the same time.
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 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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