1. S.Ducasse 1
QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.
Stéphane Ducasse
Stephane.Ducasse@univ-savoie.fr
http://www.listic.univ-savoie.fr/~ducasse/
The VisualWorks
Environment

2. S.Ducasse 2
License: CC-Attribution-ShareAlike 2.0
http://creativecommons.org/licenses/by-sa/2.0/

3. S.Ducasse 3
Smalltalk Run-Time Architecture
• Virtual Machine + Image + Changes and Sources
• Image = bytecodes
• Sources and changes = code (text)
A bytethe vir
IMAGE2IMAGE2StandShar
IMAGE1.IMAGE1.
All the objeat a momen
One per us
+

4. S.Ducasse 4
Runtime Architecture
• The byte-code is in fact translated into native code by a
just-in-time compiler.
• The source and the changes are not necessary for
interpreting the byte-code, this is just for the
development. Normally they are removed for
deployment.
• An application can be delivered as some byte-code files
that will be executed with aVM.The development image
is stripped to remove the unnecessary development
components.

5. S.Ducasse 5
Mouse Semantics
SelectOperatWinRed BlueYellow

6. S.Ducasse 6
Launcher and Settings

7. S.Ducasse 7
Browsing a class

8. S.Ducasse 8
Browsing methods

9. S.Ducasse 9
Inspector
• To look inside objects
• Violates encapsulation but extremely coooool!!!
• anObject inspect

10. S.Ducasse 10
Debugger?

11. S.Ducasse 11
Debugger !!!

12. S.Ducasse 12
ChangeListTo recover from
power failure!!

13. S.Ducasse 13
File list

14. S.Ducasse 14
SUnit

15. S.Ducasse 15
Workspace: to edit snippet of
code

16. S.Ducasse 16
• Integrated version management
• Check in / out
• Back end postgres/oracle
• Based on packages and bundles
• no scope only deployment/source management concepts
Store

17. S.Ducasse 17
Published Items

18. S.Ducasse 18
Package and Bundle:Versioning
code

19. S.Ducasse 19
Change your Mind
• Everything you do is recorded !!
• So try and learn how to recover your code
• You are smart so
– Experiment,
– learn for you, browse,
– be aggressive, ***all*** the code is there