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[Pier] Image crash after a kernel import (through SIXX)

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cedreek

[Pier] Image crash after a kernel import (through SIXX)

Hi,

My import through SIXX is OK.
I can load it but when I try to login, the squeak image crash.

Does someone have experienced the same problem or have an idea of the problem origin ?
only updating the image causes trouble too.

Thanks

Cédrick

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Lukas Renggli-2

Re: [Pier] Image crash after a kernel import (through SIXX)

> My import through SIXX is OK.
> I can load it but when I try to login, the squeak image crash.

Do you have a crash-dump?

Do you have block-contexts or MADynamicObject instances in your
serialized mode? If you do, you have to get rid of them beforehand:

PRComponent allInstancesDo: [ :each | each reset ]

Cheers,
Lukas

--
Lukas Renggli
http://www.lukas-renggli.ch

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cedreek

Re: [Pier] Image crash after a kernel import (through SIXX)

Do you have a crash-dump?

no...
it's like a buffer overflow... showing only in the bottom part of the image screen...

I've seen a line about BlockContext...

Do you have block-contexts or MADynamicObject instances in your
serialized mode? If you do, you have to get rid of them beforehand:

PRComponent allInstancesDo: [ :each | each reset ]

I'll try to make a kernel backup after making that...

Is it:
PRComponent allInstancesDo: [ :each | each reset ]
or

PRComponent allSubInstancesDo: [ :each | each reset ]

Thanks Lukas

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Lukas Renggli-2

Re: [Pier] Image crash after a kernel import (through SIXX)

> Is it:
> PRComponent allInstancesDo: [ :each | each reset ]
> or
> PRComponent allSubInstancesDo: [ :each | each reset ]

Either one should be fine. I guess you don't have any subinstances,
because PRComponent has no subclasses (unless you've created one) ;-)

>
>
> Thanks Lukas
>
>
> _______________________________________________
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--
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cedreek

Re: [Pier] Image crash after a kernel import (through SIXX)

Either one should be fine. I guess you don't have any subinstances,
because PRComponent has no subclasses (unless you've created one) ;-)

oups, right... :)

so I tried and still the same... It's not specific to the login... also validating an edit makes the image crash..

maybe I did something bad...

to serialize:
|xmlString |
PRComponent allInstancesDo: [:ea | ea reset].
xmlString := (PRKernel instanceNamed: 'Wiki Viewty') sixxOn: (FileStream fileNamed: 'saveKernelViewty.xml')

to load:
PRKernel instances add: (Object readSixxFrom: (FileDirectory default readOnlyFileNamed: 'saveKernelViewty.xml'))

I put the image here if you have a moment ... (http://cdrick.free.fr/sq3.10-7159web08.01.1.zip)

Cédrick

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Lukas Renggli-2

Re: [Pier] Image crash after a kernel import (through SIXX)

> I put the image here if you have a moment ... (http://cdrick.free.fr/sq3.10-7159web08.01.1.zip
> )

Aha, I know that problem. You have to reset the persistency using
something like this (before serialization and after loading):

kernel persistency: PRNullPersistency new

The persistency references a semaphore and semaphores obviously don't
like to be serialized.

Btw, I saw that you have PRImagePersistency set in your image. This
will sooner or later result in corrupted sources and changes, if you
manually change code or load packages in the image. You have been
warned!

Lukas

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http://www.lukas-renggli.ch

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cedreek

Re: [Pier] Image crash after a kernel import (through SIXX)

Aha, I know that problem. You have to reset the persistency using
something like this (before serialization and after loading):

kernel persistency: PRNullPersistency new

Arf, at one point I wanted to try that ! but I forgot :) Thanks Lukas...

The persistency references a semaphore and semaphores obviously don't
like to be serialized.

Btw, I saw that you have PRImagePersistency set in your image. This
will sooner or later result in corrupted sources and changes, if you
manually change code or load packages in the image. You have been
warned!

uhm !

What the alternative then... change the persistency to PRNullPersistency, makes changes and updates and then redo image persistency.
I've seen there are evolutions to ImagePersistency in the last commits...

Cédrick

ps: btw, I found pier really great as a user :) I serve it at home ans this is working nicely. I have suggestions as an admin page per default but I'llcome back later for that ... :)

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cedreek

Re: [Pier] Image crash after a kernel import (through SIXX)

are the last commits stable ?

I saw some should not be loaded.

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Lukas Renggli-2

Re: [Pier] Image crash after a kernel import (through SIXX)

In reply to this post by cedreek

> What the alternative then... change the persistency to
> PRNullPersistency, makes changes and updates and then redo image
> persistency.

Yes, it is dangerous that this suddenly triggers a snapshot when you
are in the middle of doing something. Depending on when this happens
(what is quite likely after all) your changes are screwed ...

> I've seen there are evolutions to ImagePersistency in the last
> commits...

As far as I know these changes are made by Doru. He made it easier to
make Pier be deployed on seasidehosting.st where there are certain
disc limits. I didn't had a look at his changes though.

> ps: btw, I found pier really great as a user :) I serve it at home
> ans this is working nicely. I have suggestions as an admin page per
> default but I'llcome back later for that ... :)

Yes, we are working on that. Also on a decent default layout. Etc.

Cheers,
Lukas

--
Lukas Renggli
http://www.lukas-renggli.ch

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Lukas Renggli-2

Re: [Pier] Image crash after a kernel import (through SIXX)

In reply to this post by cedreek

> are the last commits stable ?

It is just that the stylesheet is in the middle of a transition.
Shouldn't be dangerous if you don't depend on it.

Cheers,
Lukas

--
Lukas Renggli
http://www.lukas-renggli.ch

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cedreek

Re: [Pier] Image crash after a kernel import (through SIXX)

In reply to this post by Lukas Renggli-2

2008/1/27, Lukas Renggli <[hidden email]>:

> What the alternative then... change the persistency to
> PRNullPersistency, makes changes and updates and then redo image
> persistency.

Yes, it is dangerous that this suddenly triggers a snapshot when you
are in the middle of doing something. Depending on when this happens
(what is quite likely after all) your changes are screwed ...

is it also the case if one page is edited ?

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Lukas Renggli-2

Re: [Pier] Image crash after a kernel import (through SIXX)

> 2008/1/27, Lukas Renggli <[hidden email]>: > What the
> alternative then... change the persistency to
> > PRNullPersistency, makes changes and updates and then redo image
> > persistency.
>
> Yes, it is dangerous that this suddenly triggers a snapshot when you
> are in the middle of doing something. Depending on when this happens
> (what is quite likely after all) your changes are screwed ...
>
> is it also the case if one page is edited ?

No, that goes trough the persistency mechanism of Pier, that's not an
issue. It is just editing source code.

Cheers,
Lukas

--
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http://www.lukas-renggli.ch

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