May 2017 - Pharo-dev - lists.pharo.org

[ bloc]'Pulse loop must be running in order to request a pulse'
by Stephane Ducasse May 20, 2017

May 20, 2017

I wanted to work on the bloc booklet and when I reopen my image I get 'Pulse loop must be running in order to request a pulse'

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Calypso technology preview.
by Ben Coman May 20, 2017

May 20, 2017

It is probably much too late to suggest this, but if Calypso is a candidate for our next browser, perhaps it could be included in Pharo 6 as a technology preview? Or maybe in a half-year point release Pharo 6.x ? cheers -ben

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Embeddable/scalable Smalltalk VM needs funding for release (repost/update from squeak-dev)
by Zak Fenton May 20, 2017

May 20, 2017

Hi folks. I posted earlier in squeak-dev about a Smalltalk implementation I've been working on. The first post was a bit unwieldy, but there was at least some interest so I'm posting an update to vm-dev and pharo-dev. Main strong points are that it's embeddable (like Lua or SQLite) and scalable (like Erlang). There are weak points too, of course (e.g. hot loop performance will be much worse than Squeak/Pharo at this point). The VM itself is pure C and has no dependencies apart from libc and libm. It doesn't require a filesystem (you can pipe VM images through custom stream implementations or arrays) and it should run well in tight (~1MB) memory situations. The extension system is similar to the Unix system call and virtual filesystem APIs, so it's kind-of object oriented but in a very "C" way. All extension resources are managed properly (so the system can clean up safely and/or warn you if you allocate memory and don't deallocate it, for example). Extensions are available for cells (threads/individual VMs), shared memory (so different cells can communicate efficiently - but also with memory protection and calling features for implementing domain-specific JIT compilers), windowing and event handling (based on SDL2) and 2D graphics rendering (based on Cairo). There are some higher-level libraries (stylable GUI system, tight OS integration, 3D modelling, etc.). It's polished in some ways (there's a test suite, an integrated help system, colour shell, etc.), but it needs a lot more refinement in others (the current GUI style is terrible, it needs more documentation, there's only minimal support for keyboard entry, no networking library, etc.). I'd like to release it (ideally as 100% public domain/CC0), but I don't want to do so without some way of funding development. The project promises a lot and I want to actually deliver with some ongoing updates and support (and being able to pay rent next week would also be a plus), so I'm not interested in just dumping it on GitHub and calling it a day. So I'm open to any suggestions as to how to fund this project at least in the short term and how it might fit into the wider Squeak/Pharo/Smalltalk ecosystems, as well as any technical criticism relating to the implementation itself. I've put together a basic website describing the implementation in a bit more detail (sorry, no downloads yet): http://a4vm.info/ -Zak.

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Need help with Pillar
by Alexandre Bergel May 19, 2017

May 19, 2017

Hi! I have installed Pillar on MacOSX using: curl https://raw.githubusercontent.com/pillar-markup/pillar/master/download.sh | bash I had to copy PharoV50.sources in the folder pharo-vm/ apparently. Getting the archetype book gives me an error: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= /tmp/pillar> ./pillar archetype book ConnectionTimedOut: Data receive timed out. [ ConnectionTimedOut signal: 'Data receive timed out.' ] in Socket>>waitForDataFor: in Block: [ ConnectionTimedOut signal: 'Data receive timed o...etc... Socket>>waitForDataFor:ifClosed:ifTimedOut: Socket>>waitForDataFor: ZdcSecureSocketStream(ZdcAbstractSocketStream)>>socketWaitForData [ self socketWaitForData ] in ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer in Block: [ self socketWaitForData ] BlockClosure>>on:do: ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer ZdcSecureSocketStream(ZdcAbstractSocketStream)>>next ZnLineReader>>processNext ZnLineReader>>nextLine ZnStatusLine>>readFrom: ZnStatusLine class>>readFrom: ZnResponse>>readHeaderFrom: ZnResponse(ZnMessage)>>readStreamingFrom: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Which website is it trying to get access to? Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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bug in command line handler
by K K Subbu May 19, 2017

May 19, 2017

All, I found an annoying bug with Pharo's eval command line handler. When it encounters a syntax error, the foreground color is set to red while printing error message, but not restored after (see attachment). I have to reset it every time using "echo -e \e[0m" :-(. I found ---- STCommandLineHandler>>#printCompilerWarning: aSyntaxErrorNotification ... "print the marker under the error line" (lineNumber == errorLine) ifTrue: [ stderr red nextPutAll:( '_^_' padLeftTo: position - start + maxLineNumberSize + 4); lf ]] ---- The above code will leave the red color if the error happens on the last line (as in eval handler), then the color is never restored. Can someone confirm if this is indeed what is happening? I will file a case and post a fix, if so. I also found VTermOutputDriver uses incorrect ANSI color codes (e.g. white is 37 instead of 97). If the current terminal bg color happens to be "stderr white", then the error text is unreadable. Regards .. Subbu

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Anyone knows how to get the list of available archetype with Pillar?
by Alexandre Bergel May 19, 2017

May 19, 2017

Hello! Still on my quest to use Pillar :-) What are the different Archetypes available for Pillar? It would be great to have: ./pillar archetype to obtain the list of available archetype :-) Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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PrimitiveFailed: primitive #primLocalAddress in NetNameResolver class failed [FreeBSD]
by Petr Fischer May 19, 2017

May 19, 2017

Hello, just tested latest 32b Linux spur VM "stable-threaded-20170503" with latest 6.0 image "60494" (from files.pharo.com) under FreeBSD with linux compatibility layer switched on. Good part - now, it's running wihtout need of real time threads (no need to run under root, oh yes!) and it runs near 2x speed in some tests, just wow! But, this exception occurs often: PrimitiveFailed: primitive #primLocalAddress in NetNameResolver class failed details: https://pastebin.com/raw/bdjDW6YR Whats wrong? Some news/changes in SocketPlugin? Thanks! pf

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DVCS integration via users pace file system
by Eliot Miranda May 19, 2017

May 19, 2017

Hi All, has anyone investigated integrating with a dvcs through a user space file system (https://en.m.wikipedia.org/wiki/Filesystem_in_Userspace) such as Fuse or Dokan? SqueakFS for Mac OS X exists but is tied to Python. A native implementation would be a good test for the FFI. _,,,^..^,,,_ (phone)

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Adding a CommandLineArgument>>#options: aName do: aBlock?
by Holger Freyther May 18, 2017

May 18, 2017

Hi, I want to implement something like -vvvv[1] but currently the optionAt variants will pick the first option only. Would there be general interest in an implementation that allows to iterate through all variants? Would an above >>#do: like approach be preferred or to return a list of options? With >>#ifAbsent: or not? Enjoy the PharoDays and I wish traveling would have allowed me to attend. holger [1] Count the number of occurrences for -v. In fact I want something like the below to add two hosts to a list --add-host=mongodb://one:port --add-host=mongodb://two:port

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[pharo-project/pharo-core]
by GitHub May 18, 2017

May 18, 2017

Branch: refs/tags/60494 Home: https://github.com/pharo-project/pharo-core

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