Issue 5300 in pharo: End of startup script behavior changed ?

Status: Accepted
Owner: ----
Labels: Milestone-1.4 Type-Bug

New issue 5300 by [hidden email]: End of startup script behavior  
changed ?
http://code.google.com/p/pharo/issues/detail?id=5300

Guys,

Maybe I missed this, but did something change with the behavior at the end  
of a startup script between 1.3 and 1.4 ?

It used to be that the image kept on running unless you asked it to quit  
explicitly, now it seems that the image automatically quits unless you keep  
it busy. Can someone confirm this ? Was this intentional ?

What would be the recommended way to keep the image open ?

Somehow something like

  [ (Delay forDuration: 1 hour) wait ] repeat.

seems so silly, but it works.

Thx,

Sven


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Comment #1 on issue 5300 by [hidden email]: End of startup script  
behavior changed ?
http://code.google.com/p/pharo/issues/detail?id=5300

I just tested the following script:

script.st <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
FileStream stdout nextPutAll: 'bla'; crlf.
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

prints out the expected 'bla' and the image stays open

stackVM compilerWarning.image script.st


Image: 14329

VM: Mac StackInterpreter VMMaker-oscog-EstebanLorenzano.139  => stays open
VM: Mac CoInterpreter VMMaker-oscog-EstebanLorenzano.139  => stays open

what VM / Image are you using?


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Comment #2 on issue 5300 by [hidden email]: End of startup script  
behavior changed ?
http://code.google.com/p/pharo/issues/detail?id=5300

Thanks for looking into this !

I just retried everything, and you are right and I was wrong: it is still  
working as before:

$ cat test.sh
#!/bin/bash
script_home=$(dirname $0)
script_home=$(cd $script_home && pwd)
image=$script_home/Pharo-1.4.image
script=$script_home/test.st
args=$*
vm=$script_home/bin/CogVM
options="-vm-display-null -vm-sound-null"
#echo $vm $options $image $script $args
$vm $options $image $script $args

$ cat test.st
FileStream stdout wantsLineEndConversion: true.
{ Smalltalk version. Smalltalk lastUpdateString. Smalltalk vm version. }
   do: [ :each |
     FileStream stdout nextPutAll: each; cr ].

$ ./test.sh
Pharo1.4a
Latest update: #14332
CoInterpreter VMMaker-oscog-IgorStasenko.123 uuid:  
f8c5573e-7fd1-4959-91fc-e0c24d967e03 Aug 31 2011,  
StackToRegisterMappingCogit VMMaker-oscog-IgorStasenko.123 uuid:  
f8c5573e-7fd1-4959-91fc-e0c24d967e03 Aug 31 2011,  
https://git.gitorious.org/cogvm/blessed.git Commit:  
fe0330a267e1a99bd27bd161443c5cc255fde8c3 Date: Wed Aug 31 14:34:23 2011  
+0200 By: Igor Stasenko <[hidden email]>

And it stays open.

I also retried 1.3 and the behavior is the same, as long as I was using  
stock images.

With my custom images it does _not_ work. These were build by starting a  
stock image, loading code and saving with:

SmalltalkImage current
   saveAs: 'experimental';
   snapshot: false andQuit: true.

I recently changed this. Before I copied and thus renamed the stock image  
before building and just saved. Now I do this saveAs: and quit.

That seems to have resulted in an image with the quiting behavior. Is that  
possible ?



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Comment #3 on issue 5300 by [hidden email]: End of startup script  
behavior changed ?
http://code.google.com/p/pharo/issues/detail?id=5300

Haha.. you got catched by this:

SmalltalkImage current
   saveAs: 'experimental';
   snapshot: false andQuit: true.

now, if you run your saved image 'experimental',
once it starts, guess what it does?
Yes, it does
   snapshot: false andQuit: true.
:)

So you should rewrite it like:

restarting := SmalltalkImage current
   saveAs: 'experimental'.
restarting ifFalse: [
  Smalltalk  snapshot: false andQuit: true ].





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Updates:
        Status: Closed

Comment #4 on issue 5300 by [hidden email]: End of startup script  
behavior changed ?
http://code.google.com/p/pharo/issues/detail?id=5300

Very funny indeed.

Thanks a lot, I learned something new.

I changed the buid script and all is well again ;-)


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