hang on use of ESC in R 2.6.2

rnorm(10000)
then I press <Esc>

Charles,

thanks a lot for the example. I have now fixed this issue in the
current GUI. Please download and test the updated GUI tomorrow from
http://r.research.att.com/

Thanks,
Simon


On Feb 12, 2008, at 10:43 AM, Charles Hebert wrote:

If R is stuck in a long computation in C code that doesn't call
R_ProcessEvents, we're helpless. There is no way to stop that code
until it finishes. Even if you press <Esc> it may not help (just  
give
you the beachball), because the event of you pressing <Esc> must
first
be processed so it can fire,

Command :

rnorm(10000)
then I press <Esc>

reproduced the problem. It's not link to the computational time.

Best regards, C.

~~

Mac Intel - OS 10.5.1 / 10.5.2

sessionInfo()

R version 2.6.2 (2008-02-08)
i386-apple-darwin8.10.1

locale:
fr_FR.UTF-8/fr_FR.UTF-8/fr_FR.UTF-8/C/fr_FR.UTF-8/fr_FR.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

desire so to find out what R is doing.
To do so, start a Terminal (in parallel to your unresponsive R) and
type:
gdb
attach R

That should get you into the R process that is spinning. Now you can
issue
bt
to see where it really is. Very likely it will be somewhere is the
package performing the computation. But if it's not, then we want to
know.

Anyway, I suspect that this is not really something we can do much
about (in the current GUI). The new GUI 2.0 is running R in a
separate
thread, so it is always responsive despite R being busy, hence we  
can
deal better with unresponsive R there.

Cheers,
Simon

On Feb 10, 2008, at 10:53 AM, Ken Knoblauch wrote:

Hi,

I notice with R 2.6.2 on a powerpc and on a MacBook Pro that if I
hit ESC to
annul running a line in the GUI, input hangs with the spinning  
beach
ball
for an indefinite period of time.  I haven't tried to see how long
it will
hang, but
it is at least several minutes too long.  Checking Force Quit
indicates that
R is not responding.

On the power pc, w/ Tiger (but the same thing happens on my Intel
Mac w/
Leopard)
sessionInfo()
R version 2.6.2 (2008-02-08)
powerpc-apple-darwin8.10.1

locale:
en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods    
base


Thanks.

best,

Ken