Hello! This is my weekly ChangeLog, from 27 March 2017 to 2 April 2017. You can see it in a better format by going here: http://log.smallworks.eu/web/search?from=27/3/2017&to=2/4/2017 ChangeLog ========= 31 March 2017: -------------- * Yesterday I spent most of the day verifying why the pharo site was going down time to time... as a result, we found a problem in Voyage that may cause a deadlock under heavy load. Finally, with the help of Guille we help a possible cause in the way the +VOLazyProxy+ is implemented. This is +#doesNotUnderstand:+ current implementation: ---- VOLazyProxy>>doesNotUnderstand: aMessage | realObject | realObject := self obtainRealObject. realObject ifNil: [ (repository descriptionBuilder for: objectClass) isAllowMissingContent ifTrue: [ realObject := VOMissingObject class: objectClass id: objectId ] ifFalse: [ VOError signal: ('Lazy reference not found {1}: {2}' format: {objectClass name. objectId}) ] ]. VOLazyProxy mutex critical: [ self == realObject ifFalse: [ self becomeForwardKeepingHash: realObject ] ]. ^realObject perform: aMessage selector withArguments: aMessage arguments. ---- It is designed to prevent double attempt to become when trying to access same proxy at concurrent moments (in webapps is very frequent). We discovered this implementation has some problems: * When doing the comparisson of of +self+ with +realObject+ self can already be in the stack, and then it can fail. * apparently the error handler handles the occurrence of +Semaphore+ in a stack in weird ways (to ensure is debuggable) :) So, now I'm testing (and proposing to Voyage) this implementation: ---- VOLazyProxy>>#doesNotUnderstand: aMessage | realObject thisObject error | realObject := self obtainRealObject. realObject ifNil: [ (repository descriptionBuilder for: objectClass) isAllowMissingContent ifTrue: [ realObject := VOMissingObject class: objectClass id: objectId ] ifFalse: [ VOError signal: ('Lazy reference not found {1}: {2}' format: {objectClass name. objectId}) ] ]. error := nil. thisObject := self. VOLazyProxy mutex critical: [ thisObject == realObject ifFalse: [ [ self becomeForwardKeepingHash: realObject ] on: Error do: [ :e | error := e ] ] ]. error ifNotNil: [ VOLazyProxyBecomeError new error: error; signal ]. ^realObject perform: aMessage selector withArguments: aMessage arguments. ---- If this works, I will submit an update to [Voyage](http://github.com/pharo-nosql/voyage) immediately :) 29 March 2017: -------------- * I validated some changes to Athens and copyBits primitive to fix the crashing problem. Seems to be working so I will integrate it... thanks Eliot! * Still with [Iceberg](https://github.com/npasserini/iceberg), I took care of some bug... but most important than that, I added an option to create repositories from Iceberg. This is very simple: you click in the "New repository" button :) This way you do not need a remote repository to start working, and you can keep your versions in your local environent if you want. *WARNNING*: When doing your first push, it has to be a clean push (fast-forward), I have had problems trying the otherwise (which triggered a merge that Iceberg still does not knows how to handle). 27 March 2017: -------------- * I just spent sometime fixing stuff on [Iceberg](https://github.com/npasserini/iceberg). * I fixed [issue 313](https://github.com/npasserini/iceberg/issues/313) (now user gets a dialog to set user properties when needed). * Now commit dialog remembers last choice of "push" automatically while commiting. cheers! Esteban