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Progress changes break VMMaker

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Eliot Miranda-2

Progress changes break VMMaker

Hi All, Hi Chris,

something in the changes to ProcessInitiationException done in ToolBuilder-Kernel-cmm.48/49/52 breaks the VMMaker. i.e. the following prints nil 5 times to the Transcript instead of printing #caught 5 times.

['Progressing' displayProgressFrom: 1 to: 5 during:

[:bar|

1 to: 5 do:

[:i|

Transcript cr; print: (Notification new tag: #getVMMaker; signal); flush.

bar value: i]]]

on: Notification

do:[:ex|

ex tag == #getVMMaker

ifTrue: [ex resume: #caught]

ifFalse: [ex pass]]

Any help in fixing this appreciated!

Interestingly in the following count is 1

| count |

count := 0.

['Progressing' displayProgressFrom: 1 to: 5 during:

[:bar|

1 to: 5 do:

[:i|

Transcript cr; print: (Notification new tag: #getVMMaker; signal); flush.

bar value: i]]]

on: Notification

do:[:ex|

count := count + 1.

ex tag == #getVMMaker

ifTrue: [ex resume: #caught]

ifFalse: [ex pass]].

count 1

--
best,

Eliot

Eliot Miranda-2

Re: [Vm-dev] Progress changes break VMMaker

On Sat, Jun 23, 2012 at 10:13 AM, Balázs Kósi <[hidden email]> wrote:

I poked around a bit more, and found a method to handle these kind of
situations: #rearmHandlerDuring:
You could rewrite the exception handling block to something like this:

[ :ex |

ex tag == #getVMMaker
ifTrue: [ ex resume: #caught ]

ifFalse: [ ex rearmHandlerDuring: [ ex pass ] ] ]

and get five #cought on the Transcript

So is this a hack that points to a bug in the exception handling system or what? I don't have time to think about this carefully right now, but it looks like this is covering up a serious bug in the exception system. Thoughts?

--
best,

Eliot