[squeak-dev] Does PipeableOSProcess require
some finalization/clean up?
David T. Lewis
lewis at mail.msen.com
Wed May 16 23:47:15 UTC 2012
On Wed, May 16, 2012 at 12:53:26PM -0700, Yoshiki Ohshima wrote:
> Thank you, Dave!
>
> I now understand that going through CommandShell was the sanctioned
> way of using PipeableOSProcess. I'll just modify our code to close it
> explicitly. (And it seems to work beter.)
>
> I tried clearing the allMyChildren directory but did not seem to free
> these fds. I tried:
>
> PipeableOSProcess allSubInstancesDo: [:e | e closePipes]
>
> but this do it seems to kill the VM.
Eeek! This should not be happening. PipeableOSProcess>>closePipes uses
StandardFileStream>>primCloseNoError: which does an fclose() to close
the pipe descriptor. This should be failure-proof, but I might be missing
something.
Is this reproduceable? It does not seem to happen on my Linux PC, but
maybe it is an intermittent failure of some kind.
Thanks,
Dave
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