Re: [Pharo-users] OSProcess command - non responding image when calling often

June 8, 2016


      Hi Mariano,
Great, I will try this tomorrow!
Regards
Sabine

Am Mittwoch, 8. Juni 2016 schrieb Mariano Martinez Peck [via Smalltalk] :
...
Sabine,
I did not yet tested OSProcess but with OSSubprocess (in 5.0) I cannot
reproduce the issue:
*Polling strategy works:*
Delay delaySchedulerClass: DelayMillisecondScheduler.
20 timesRepeat: [OSSUnixSubprocess new
command: 'echo';
arguments: {
' };
redirectStdout;
*runAndWaitPollingEvery: (Delay forMilliseconds: 50) retrievingStreams:
true onExitDo: [*
      :process :outString :errString |
      Transcript show: outString;cr .
  ].
].
*Semaphore-based (child watcher) works:*
Delay delaySchedulerClass: DelayMillisecondScheduler.
20 timesRepeat: [OSSUnixSubprocess new
command: 'echo';
arguments: { 'Hi There' };
redirectStdout;
*runAndWaitOnExitDo:* [
      :process :outString :errString |
      Transcript show: outString;cr .
  ].
].
*Using shellCommand: (bash) instead of #command: and #arguments: does work
too:*
Delay delaySchedulerClass: DelayMillisecondScheduler.
20 timesRepeat: [OSSUnixSubprocess new
*shellCommand: ('echo "Hi there"');*
redirectStdout;
runAndWaitOnExitDo: [
      :process :outString :errString |
      Transcript show: outString;cr .
  ].
].
On Wed, Jun 8, 2016 at 3:11 PM, Sabine Manaa <[hidden email]
<http:///user/SendEmail.jtp?type=node&node=4900000&i=0>> wrote:
...
Hi Mariano,
if you take the download Image from the Pharo website, then load
commandShell and then zinc from the catalog browser and then do
Delay delaySchedulerClass: DelayMillisecondScheduler.
and then
20 timesRepeat: [OSProcess  command: ('echo "Hi there"').]
Then you will get the lock.
Does this help to find the reason for the problem?
Regards
Sabine
--
Mariano
http://marianopeck.wordpress.com
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