Hello,
On Sunday 09 March 2008 01:01, zooko wrote:
> If I run this bash command line on Mac OS 10.4:
>
> $ perl shell_harness rollback.sh
>
> Then it runs the rollback.sh test and quickly finishes successfully.
>
> If I run this command-line:
>
> $ python -c 'import os;os.system("perl shell_harness rollback.sh")'
>
> Which does approximately the same thing, then it hangs indefinitely.
>
> There's something else curious about it -- twice during my
> experimentation I interrupted a test to the bash prompt back, but the
> test left several processes running in the background: bash, and yes,
> but not darcs or perl.
On a PPC Mac OS X 10.4, I have experienced something that could be similar: As
I recall, it was a pipe like
> yes abc | head -n 1000 | ... (something more)
for generating some large number of bytes as input to a test program. When run
from the command line, it worked fine. When executed from a shell, it never
returned, leaving a yes process (and perhaps others) that seemingly just used
CPU but never stopped.
On Sunday 09 March 2008 01:17, Mark Stosberg wrote:
> ...
> Very interesting. What if you apply the patch I sent to darcs-devel
> recently? It just replaces the use of "yes | darcs rollback" with
> "darcs rollback -a"
This could very well be worth trying, whatever it is, because it eliminates
the use of yes.
> ...
Best regards
Thorkil
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