image start - how to run code at image start

Greetings,

I would like to run some code when my image start up, before anything
else runs.  How does one do this?

Also, how does one detect an image shutdown and execute some code before
the image shuts down?

Thanks,
Frank


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Have a look at Subsystem, its subclasses and references in the
AppDevGuide.pdf.

-Boris


-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On
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Sent: Thursday, February 02, 2012 10:01 AM
To: [hidden email]
Subject: [vwnc] image start - how to run code at image start

Greetings,

I would like to run some code when my image start up, before anything
else runs.  How does one do this?

Also, how does one detect an image shutdown and execute some code before
the image shuts down?

Thanks,
Frank


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Also have a look at class SystemEventInterest and its class method #example. The most prominent
events for image startup/shutdown are #returnFromSnapshot / #aboutToSnapshot.
But be careful: "before anything else runs" is a dangerous formula! For running your early code the
image needs to pass certain bootstrap phases. If your "anything else" is necessary system
initialization, you cannot do too much...

Regards,
Holger

Am 02.02.2012 16:17, schrieb Boris Popov, DeepCove Labs:
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Also, if you want things to run based on command line arguments, look at class CommandLineInterest.  Using that with Subsystem (as Boris pointed out) can give you very good control over what an image does on startup.

On Feb 2, 2012, at 10:00 AM, squeakman wrote:

James Robertson
http://www.jarober.com
[hidden email]




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Hi Squeakman! Whoever you are...

You could run a text file with Smalltalk source code:
C:\<Path to VisualWorks>\vw7.7.1\bin\win\visual.exe MyImage.im
-filein "MyFileWithSmalltalk.st"

And you can send in Smalltalk code as argument:
C:\<Path to VisualWorks>\vw7.7.1\bin\win\visual.exe MyImage.im  -doit
"MyClass new doTheWork"

Examples are for Windows. Non-standard OSes might use different syntax ;-)

Runar
blog.epigent.com
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