December 2014 - Pharo-dev - lists.pharo.org

[OT] Bee Smalltalk
by Torsten Bergmann Dec. 23, 2014

Dec. 23, 2014

Anyone know what happened to Bee Smalltalk? The release announced at http://beesmalltalk.blogspot.de is not available on GitHub anymore. https://github.com/melkyades/bee is pointing to nowhere...

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Christmas gift: Memory Monitor
by Alexandre Bergel Dec. 23, 2014

Dec. 23, 2014

Hi! Torsten motivated us to upgrade Memory monitor. Here is the script: -=-=-=-=-=-=-=-=-=-=-=-= Gofer it smalltalkhubUser: 'abergel' project: 'MemoryMonitor'; configurationOf: 'MemoryMonitor'; loadStable. -=-=-=-=-=-=-=-=-=-=-=-= In Pharo 3.0, you get something like: In Pharo 4.0, buttons are missing. Any idea whatâs wrong? Memory monitor is accessible from the configuration browser. Kind regards, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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Do not forget to register to Pharo days...
by stepharo Dec. 23, 2014

Dec. 23, 2014

http://pharodays2015.pharo.org Stef

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MultiByteFileStream #converter - what does it do?
by sheridan＠sheridan-mahoney.com Dec. 23, 2014

Dec. 23, 2014

Hi there, I am still working my way through MultiByteFileStream tests, and have come across the messages #converter and #converter: . I would like to be able to test these - could someone explain briefly how the converters are used in this class? Many thanks, Sheridan

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Re: [Pharo-dev] running MS Surface Pro 3 on Windows 8 - test failure - JobTest>>#testCurrent
by sheridan＠sheridan-mahoney.com Dec. 23, 2014

Dec. 23, 2014

Hi, There is an open bug (12435 - skip JobTest>>#testCurrent to test) saying a test failure with JobTest>>#testCurrent had been fixed, but I am seeing a re-occurrence of the problem on my Windows 8.1 Pro when I run the full body of test cases available. However when I run the test case on its own, the test passes. This seems like an anomaly but is it bug-worthy? Here is the code: testCurrent self assert: Job current isNil. [ :aJob | self assert: Job current equals: aJob. [ :anotherJob | self assert: Job current equals: anotherJob. ] asJob run. self assert: Job current equals: aJob. ] asJob run. self assert: Job current isNil. Thanks, Sheridan

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Excel binding
by Blondeau Vincent Dec. 22, 2014

Dec. 22, 2014

Hi, Does someone know if there is a mean to access Excel sheets from Pharo to get data? I don't want to use .csv files but .xls/.xlsx files. Thanks in advance Cheers, Vincent BLONDEAU ________________________________ Ce message et les pi?ces jointes sont confidentiels et r?serv?s ? l'usage exclusif de ses destinataires. Il peut ?galement ?tre prot?g? par le secret professionnel. Si vous recevez ce message par erreur, merci d'en avertir imm?diatement l'exp?diteur et de le d?truire. L'int?grit? du message ne pouvant ?tre assur?e sur Internet, la responsabilit? de Worldline ne pourra ?tre recherch?e quant au contenu de ce message. Bien que les meilleurs efforts soient faits pour maintenir cette transmission exempte de tout virus, l'exp?diteur ne donne aucune garantie ? cet ?gard et sa responsabilit? ne saurait ?tre recherch?e pour tout dommage r?sultant d'un virus transmis. This e-mail and the documents attached are confidential and intended solely for the addressee; it may also be privileged. If you receive this e-mail in error, please notify the sender immediately and destroy it. As its integrity cannot be secured on the Internet, the Worldline liability cannot be triggered for the message content. Although the sender endeavours to maintain a computer virus-free network, the sender does not warrant that this transmission is virus-free and will not be liable for any damages resulting from any virus transmitted.

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[pharo-project/pharo-core]
by GitHub Dec. 22, 2014

Dec. 22, 2014

Branch: refs/tags/40420 Home: https://github.com/pharo-project/pharo-core

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[pharo-project/pharo-core] dca64b: 40420
by GitHub Dec. 22, 2014

Dec. 22, 2014

Branch: refs/heads/4.0 Home: https://github.com/pharo-project/pharo-core Commit: dca64b2e8f2fbb76d3215b9f070ae02bdc0f9c84 https://github.com/pharo-project/pharo-core/commit/dca64b2e8f2fbb76d3215b9f… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2014-12-22 (Mon, 22 Dec 2014) Changed paths: M Nautilus.package/Nautilus.class/class/opening/openInEnvironment_.st M Nautilus.package/Nautilus.class/class/opening/openOnClass_inEnvironment_.st M Nautilus.package/Nautilus.class/class/opening/openOnMethod_inEnvironment_.st M Nautilus.package/PackageTreeNautilusUI.class/instance/package filter/buildPackageSearch.st A Nautilus.package/PackageTreeNautilusUI.class/instance/package filter/class_matchPackagePatternString_.st A Nautilus.package/PackageTreeNautilusUI.class/instance/package filter/createPackagePattern_.st M Nautilus.package/PackageTreeNautilusUI.class/instance/package filter/packageMatchPattern_.st M Nautilus.package/PackageTreeNautilusUI.class/instance/package filter/packagePattern.st M Nautilus.package/PackageTreeNautilusUI.class/instance/package filter/packageSearchUpdate_.st A Nautilus.package/PackageTreeNautilusUI.class/instance/package filter/package_matchPackagePattern_.st A Nautilus.package/PackageTreeNautilusUI.class/instance/package filter/useLastPackagePatternString.st A Nautilus.package/PackageTreeNautilusUI.class/instance/package filter/useLastPackagePatternStringForClass_.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/README.md A Nautilus.package/SharedPackageFilterPatternsHolder.class/class/accessing/instance.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/definition.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/instance/accessing/at_.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/instance/accessing/firstOrNil.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/instance/accessing/indexOf_.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/instance/accessing/lastValue.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/instance/accessing/lastValue_.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/instance/accessing/size.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/instance/accessing/value.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/instance/accessing/value_.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/instance/adding/addFirst_.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/instance/enumerating/collectWithIndex_.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/instance/initialization/initialize.st A Nautilus.package/SharedPackageFilterPatternsHolder.class/instance/removing/remove_ifAbsent_.st R Nautilus.package/SharedValueHolder.class/README.md R Nautilus.package/SharedValueHolder.class/class/accessing/instance.st R Nautilus.package/SharedValueHolder.class/definition.st R Nautilus.package/SharedValueHolder.class/instance/accessing/at_.st R Nautilus.package/SharedValueHolder.class/instance/accessing/indexOf_.st R Nautilus.package/SharedValueHolder.class/instance/accessing/size.st R Nautilus.package/SharedValueHolder.class/instance/accessing/value.st R Nautilus.package/SharedValueHolder.class/instance/accessing/value_.st R Nautilus.package/SharedValueHolder.class/instance/adding/addFirst_.st R Nautilus.package/SharedValueHolder.class/instance/enumerating/collectWithIndex_.st R Nautilus.package/SharedValueHolder.class/instance/initialization/initialize.st R Nautilus.package/SharedValueHolder.class/instance/removing/remove_ifAbsent_.st M NautilusCommon.package/NautilusHistoryEntry.class/definition.st M NautilusCommon.package/NautilusHistoryEntry.class/instance/accessing/selectedMethod.st M NautilusCommon.package/NautilusHistoryEntry.class/instance/accessing/selectedMethod_.st A NautilusCommon.package/NautilusHistoryEntry.class/instance/accessing/selectedSelector.st A NautilusCommon.package/NautilusHistoryEntry.class/instance/accessing/selectedSelector_.st M NautilusCommon.package/NautilusHistoryEntry.class/instance/private/with_.st M NautilusCommon.package/NautilusHistoryEntry.class/instance/protocol/=.st M NautilusCommon.package/NautilusHistoryEntry.class/instance/protocol/applyTo_.st M NautilusCommon.package/NautilusHistoryEntry.class/instance/protocol/asHistoryString.st M NautilusCommon.package/NautilusHistoryEntry.class/instance/protocol/hash.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - scripts/script420.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - updates/update40420.st M ScriptLoader40.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st M Shout.package/SHParserST80.class/instance/parse support/parsingBlockarguments.st Log Message: ----------- 40420 14634 Package Filter in Nautilus should use the last used filter when a new window is opened https://pharo.fogbugz.com/f/cases/14634 14620 Jump from history entry does not work https://pharo.fogbugz.com/f/cases/14620 14630 Pipes method highlighting https://pharo.fogbugz.com/f/cases/14630 http://files.pharo.org/image/40/40420.zip

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GSpotter fonts of evaluation results
by stepharo Dec. 22, 2014

Dec. 22, 2014

The fonts used by GSpotter to display results does not change when changing size and this should be fixed for demo for example. Stef

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Re: [Pharo-dev] [Vm-dev] Re: Cog in the cloud
by Ben Coman Dec. 22, 2014

Dec. 22, 2014

Ben Coman wrote: > > (whoops forgot to cross-post) > > Eliot Miranda wrote: >> Hi Ben, >> >> >> On Dec 19, 2014, at 8:08 PM, Ben Coman <btc(a)openInWorld.com> wrote: >> >>> Just some thoughts that arose as I skipped along the web... >>> >>> With the idea of using Pharo in the cloud, I was thinking of how >>> PharoNOS[1] is basing off top of the Linux kernel, but the examples >>> indicate its operating in User Mode. So I was wondering about >>> performance being greater[2] if the CogVM ran in Kernel Mode. However >>> maybe this could get tangled in the GPL license of the kernel. >>> >>> Now I believe FreeBSD/NetBSD license is compatible with COG's MIT >>> license, so that seems a better option for eliminating layers of the >>> operating system. They both[3][4] have pre-built Amazon Machine >>> Images to run on EC2, as well as instructions[5] to build your own >>> AMI. So potentially we could build an AMI with the CogVM linked to >>> the FreeBSDKernel operating in Kernel Mode, with no User Mode. The >>> lack of direct access to memory from the Image, and probably single >>> application focus should be sufficient security to forgo User Mode, >>> and run faster. >>> >>> But we could go a step further. Runing in the cloud relies heavily >>> on virtualisation, and for performance[6], most likely on the OS's >>> paravirtualisation interface - to Xen for example. So from Cog, why >>> not interface direct to the Xen FrontEndDriver[7] and eliminate the >>> DomU operating system all together. What I understand from [6] is >>> that Xen's paravirtualisation hooks makes it much easier to boot, >>> than booting on the bare metal of a fully-virtualised system. So the >>> former seems more achievable than the latter (which was the only >>> option in years past), and also be more portable as technology >>> evolves, to any platform Xen runs on. >>> >>> Squeak/Pharo on Cog-Xen could be a good choice for a Cloud Operating >>> System[8]. Maybe a good student research project? >> >> This sounds really cool, but could you analyse a bit further? >> >> - what key economic and managerial benefits accrue from this >> configuration? > > I'll put some more thought into this, but just off the top of my head > (so it turned out more technical than economic/managerial): > > * Eliminates performance overhead of system call context switching. > Although this is replaced by hypercalls, it removes one layer on > hypervisor systems, which plausibly is going to be EVERYTHING in the > future. > > * Eliminate performance overhead of OS networking stack > http://roscidus.com/blog/blog/2014/08/15/optimising-the-unikernel/ > > * Data from virtual devices is event driven. > > * More easily portable to different ARM platforms. Xen will present a > common interface to hide platform idiosyncrasies. > --> More widespread embedded use Cog. > http://www.slideshare.net/xen_com_mgr/free-rtos-xensummit > > * Run databases in their own domain. > > * Isolate plugin memory space. Rather than linking plugins into Cog, > potentially threatening its stability, run them in a separate domain and > use high-speed inter-domain shared memory. > http://www.cs.ucsb.edu/~nanli/projects/cs270.pdf > > * Have a cloud community of thousands** of Images running each in their > own domain, communicating with high-speed inter-domain shared memory. > ** presumptive figure - would need to check scaling ability > > * Data sharing on high density hosting providers. Not sure if its there > yet, but may get Copy-On-Write > http://www-archive.xenproject.org/files/xensummit_fall07/18_GregorMilos.pdf > > * In very large Images, which Spur will allow, perhaps a better way to > snapshot an Image is via virtual machine snapshotting using Copy-On. > http://www.cercs.gatech.edu/tech-reports/tr2010/git-cercs-10-05.pdf > > * Rather than convert the Cog/Image to be multi-threaded, could have > many grid nodes running their own domain, communicating with high speed > shared memory. > http://www.cs.ucsb.edu/~nanli/projects/cs270.pdf > http://osnet.cs.binghamton.edu/publications/hines07memx.pdf > > * AMD's hardware virtualisation eliminated a Ring and also segmented > memory protection used by virtualisation to separate address spaces, so > 64-bit AMD can be slower. Eliminating the OS kernel layer probably > bypasses this limitation since there would be only two levels - > Hypervisor & Cog. > https://lse.epita.fr/data/2011-lse-summer-week/xen.pdf > > * Its where all the cool kids hang out --> marketing opportunity > * Security versus lines of code... Linux = 15.9 million (3.6 Kernel) OSX = 86 million FreeBSD = 6.25 million OpenSolaris = 10 million Windows = 64 million Xen-ARM = 90,000 Xen-x86 = 140,000 https://www.google.com/fusiontables/DataSource?docid=12Eg7Ru1CH5MIjomcfjaGK… http://wiki.xen.org/wiki/Xen_ARM_with_Virtualization_Extensions_whitepaper > > >> >> - what infrastructure is missing? (e.g. what key drivers need >> implementing?) > > I'll need to understand Cog more. As a start, here are some porting and > API docs... > > http://events.linuxfoundation.org/sites/events/files/slides/Porting%20FreeB… > > > http://oss.org.cn/ossdocs/server_storage/xen/interface/interface.html > > http://www.informit.com/articles/article.aspx?p=1160234&seqNum=4 > > https://lse.epita.fr/data/2011-lse-summer-week/xen.pdf > > https://github.com/cloudius-systems/osv/blob/master/drivers/xenfront-xenbus… > > > cheers -ben > >>> >>> [1] http://pillarhub.pharocloud.com/hub/mikefilonov/pharonos >>> [2] http://blog.codinghorror.com/understanding-user-and-kernel-mode/ >>> [3] http://www.daemonology.net/freebsd-on-ec2/ >>> [4] http://wiki.netbsd.org/amazon_ec2/amis/ >>> [5] http://wiki.netbsd.org/amazon_ec2/build_your_own_ami/ >>> [6] http://wiki.xen.org/wiki/Virtualization_Spectrum >>> [7] http://wiki.xen.org/wiki/FrontendDriver >>> [8] http://wiki.xen.org/wiki/Cloud_Operating_Systems >> >> >> Eliot (phone) >> > > > >

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