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Re: [Pharo-dev] [Pharo-project] [Vm-dev] Re: Can OSProcess functionality be implemented using FFI instead of plugin?
by Eliot Miranda Jan. 17, 2016

Jan. 17, 2016

On Sat, Jan 16, 2016 at 4:37 PM, Levente Uzonyi <leves(a)caesar.elte.hu> wrote: > > On Sat, 16 Jan 2016, Mariano Martinez Peck wrote: > > (Still no quote.) > > How will you read the output of the process without having your image's > process blocked in the FFI callout? > How will you make sure that writes to input of the process won't block the > FFI callout? This presupposes the threaded FFI. The threaded FFI allows the VM to make any number of blocking calls, adding a new thread to run the VM whenever the VM is stalled when the heartbeat beats. hence one can freely read and write to/from i/o blocking i/o streams (including pipes and sockets) or blocking database connexions, etc, all without stating that the FFI call must be done in a special way, since all calls through the FFI can block without blocking the VM. Note that the scheme is also amenable to plugins, but the plugins must be rewritten to include the release vm/acquire vm calls around a blocking call. With the threaded VM the FFI includes these calls around every FFI call. HTH _,,,^..^,,,_ best, Eliot

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Git repository and branch for spur enable pharo-vm
by Holger Freyther Jan. 16, 2016

Jan. 16, 2016

Hi, what is the official pharo-vm git repository? It looks like github.com/pharo-project/pharo-vm is not being updated right now. It looks like esteban's fork is currently being used and the spur64 branch. Is that correct? Can it it to be used for spur32 and spure64? Is there any plan to merge this back into a repositpory in pharo-project/pharo-vm? kind regards holger

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[pharo-project/pharo-core] 233d1c: 50529
by GitHub Jan. 16, 2016

Jan. 16, 2016

Branch: refs/heads/5.0 Home: https://github.com/pharo-project/pharo-core Commit: 233d1c603f211e85b5f990a062f4977faad8a57d https://github.com/pharo-project/pharo-core/commit/233d1c603f211e85b5f990a0… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-01-16 (Sat, 16 Jan 2016) Changed paths: M Rubric.package/RubScrolledTextMorph.class/instance/model protocol/drawHighlightsOn_.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50528.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50529.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50528.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50529.st M ScriptLoader50.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 50529 17201 Marking Diffs broken in Pharo5 https://pharo.fogbugz.com/f/cases/17201 http://files.pharo.org/image/50/50529.zip

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[pharo-project/pharo-core]
by GitHub Jan. 16, 2016

Jan. 16, 2016

Branch: refs/tags/50529 Home: https://github.com/pharo-project/pharo-core

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Can't gdb VM crash
by Mariano Martinez Peck Jan. 16, 2016

Jan. 16, 2016

Hi guys, I build a Spur VM for debug, I tried to run an image that is crashing me on startup but all I get from gdb is: [Inferior 1 (process 1358) exited with code 01] (gdb) call printAllStacks() You can't do that without a process to debug. mmm I was always able to see stack traces. No I cannot do anything. Any ideas what could be wrong? I have no clue why it is failing at startup and I need to know it. Thanks in advance, -- Mariano http://marianopeck.wordpress.com

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How can we flush the remembered expressions of Playground?
by stepharo Jan. 15, 2016

Jan. 15, 2016

Because when I turn videos I want to control the starting state of the system.... Then how do I reset the binding list? I could not find a menu entry. I found the resetBindings but it is not simple to grab the correct object. Stef

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Powerful ARM server
by Ben Coman Jan. 15, 2016

Jan. 15, 2016

This might make a good CI server for ARM, or ARM based Pharo cloud. http://hothardware.com/news/amd-unveils-64-bit-arm-based-opteron-a1100-soc-… cheers -ben

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Re: [Pharo-dev] [Pharo-users] [ANN] OSSubprocess first milestone
by Mariano Martinez Peck Jan. 15, 2016

Jan. 15, 2016

Luc, Damien, et all. I implemented the kind of API Luc suggested, which was a great idea. I took also his API to answer Damien question of could we do a "tail -f" example. So I made a little example where I run "tail -f system.log" and I keep a Playground updated with the stdout :) Here is the video: https://dl.dropboxusercontent.com/u/6980943/tailExample.mov Let me know what do you think. Cheers, On Fri, Jan 15, 2016 at 10:51 AM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > >> >> defaultReadStreamCreationBlock: [ process >> createTempFileToBeUsedAsReadStreamOn: '/tmp' ]; >> >> In the readme, the piece of code containing that is a bit suspicious >> because it depends on the fact that the block is evaluated after the >> variable 'process' is assigned. >> > > Thanks, fixed! > I always hated the instance side nature of those methods, so I moved them > to class side. > > > > >> -- >> Damien Cassou >> http://damiencassou.seasidehosting.st >> >> "Success is the ability to go from one failure to another without >> losing enthusiasm." --Winston Churchill >> >> > > > -- > Mariano > http://marianopeck.wordpress.com > -- Mariano http://marianopeck.wordpress.com

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Package loader question
by Trussardi Dario Romano Jan. 15, 2016

Jan. 15, 2016

Ciao, i have some packages with some class definition. Now the package1 define Class1 and Class2 with some reference to classA and classB defined into pachageA. packageA other hand, have some reference to class1 and class2. Now my question is: i can load the package1 and packageA without other considerations, leaving the system to resolve references as classes are loaded? Thanks for any considerations, Dario

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[IMPORTANT] Starting migration to Spur VM
by Esteban Lorenzano Jan. 15, 2016

Jan. 15, 2016

We will start migration to Spur today. To complete it, we will require some time, specially to adapt the CI and check everything is ok. Spur will allow us to do a big step forward in Pharo development, in the concrete you will see it immediately for this: - We have noticed a speed increment of 100% in tiny benchmarks (and according to Eliot, it will be at least 35% in general on the system). - No more GC stops (noticeable when running large systems) - We will be able to scale our systems up to 2G memory consumption without loosing performance. But, this will have some drawbacks in the first times: 1) VM will not be compatible between versions anymore: Pharo 5.0 will have a Pharo Spur VM associated (and they are not compatible). - There WILL NOT be a "non-spur" version of Pharo 5.0. Once completed the transitions, this will be the only one. 2) NativeBoost-FFI implementation has been replaced with a new implementation who relies in ThreadedFFIPlugin and IA32Plugin. While we worked a lot to do this transition as painless as possible and we achieve a good level of backward compatibility (most uses of #nbCall: should work out of the box), there are some problems we cannot solve: - there are some stuff not possible to compatibilise, notably: - Structures now need to inherit from FFIExternalStructure - Arrays now are now shadowed - in general is a bit slower (impossible to compete with ASM) but in general is not perceptible. - THERE WILL BE BUGS AND NON-IMPLEMENTED FEATURES: Current implementation is validated with Athens and even Roassal was working, but of course that does not covers all cases. 2.1) ASMJIT will be removed from system and put in a separated packages. NOTE: There will be a blog post explaining FFI-NB architecture during the week. 3) There are more or less 70 new failing tests, some of them important than we need to fix as soon as possible. Please, please, please, help us with them :) 4) In general we foresee the system will became unstable some weeks, before it gets back to normal. Please be patient. 5) You will need to adapt your Pharo 5.0 related apps and CI processes (to take care about new VM). Some programs will stop work at all (for example, I think Pharo-launcher will need to be adapted).

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