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[ANN] FFICHeaderExtractor first milestone (for early code reviewers) [WAS] Can OSProcess functionality be implemented using FFI instead of plugin?
by Mariano Martinez Peck March 18, 2016

March 18, 2016

Hi guys, OK, I have a first working version and so I wanted to share it with you. I have not yet the time to start writing the doc since I just finished the first pass on the code. Tomorrow I will start with the doc. But I thought some of you may be interested in taking a look even without formal "doc" (and some feedback/iteration may avoid re-writing docs..). If you have no clue what I am talking about, then this summary is for you: *----------* *When we use FFI to call a certain library it's quite common that we need to pass as argument certain constants (for example, SIGKILL to kill()). These constants are defined in C header files and can even change it's value in different paltforms. * *These constants also are sometimes defined by the C preprocessor and so there is not way to get those values from FFI. If you don't have the value of those constants, you cannot make the FFI call. * *----------* I have tested the tool in OSX and CentOS using latest Pharo 5.0. It won't work in Windows right now. As usual, all classes and methods have comments and there are enough tests. At the end, I decided the C program will output a very naive Smalltalk literal array kind of thingy. The tool then parses that output and directly creates a init method (which is compiled into the SharedPool class) for that platform which is then called automatically at startup (only if initialization is needed). As for real examples, I started to write constants for libc: signal.h (to use kill()) , wait.h (to use wait() famility), fcntl.h (to use ... xxx()) , and errno.h. You can take a look to the package 'FFICHeaderExtractor-LibC'. Note that for running the tests you need 'cc' findable by path in OSX and 'gcc' in Unix. To load the code in a latest Pharo 5.0, execute: Metacello new baseline: 'FFICHeaderExtractor'; repository: 'github://marianopeck/FFICHeaderExtractor:master/repository'; load. Any feedback is appreciated. I will start writing the doc now. BTW: Big thanks to Eliot Miranda which helped me answering noob questions and providing useful code and guidelines. Best, On Sat, Jan 23, 2016 at 1:12 PM, Eliot Miranda <eliot.miranda(a)gmail.com> wrote: > > Hi Denis, > > On Jan 23, 2016, at 7:30 AM, Denis Kudriashov <dionisiydk(a)gmail.com> > wrote: > > > 2016-01-22 22:35 GMT+01:00 Eliot Miranda <eliot.miranda(a)gmail.com>: > >> Let's measure this. Let's say we have 8 platforms (that's an >> underestimate, because different Linux distributions may have different >> values for certain constants), but 8, which is 4 basic platforms times 32- >> & 64-bits. We have Mac x86 32-bit, Mac x64 64-bit, Windows x86 >> 32-bit, Windows x64 64-bit, Linux x86 32-bit, Linux ARM 32-bit, Linux x64 >> 64-bit, and soon enough there will be more. Further, there may be >> different versions over time. >> >> So each of those initialization methods has >> - 1 slot for the global variable to be assigned >> - 1 slot for the literal value to assign to it >> - 3 bytes of bytecode per initialization for small methods, 4 for large >> methods. Let's say 4. >> >> So the overhead in 32-bits is 12 bytes per constant, and in 64-bits is 20 >> bytes. So the overhead per constant for all platforms is 96 bytes per >> constant in 32-bits and 160 bytes per constant for 64-bits. A full system >> with sockets, files, a database connexion etc could easily exceed 100 >> constants. I think it would be nearer 1000. So the overheads are in the >> 10- to 100-k byte range (100k ~= 0.5% of the image) on 32-bits. That's low >> but it's also pure overhead. Every GC has to visit them. Every senders >> and implementors has to visit them, but they offer nothing of value. >> Whereas the small parser for whatever notation is used to store the >> constants externally (if they are needed in a given deployment) has a small >> constant overhead; its simple code. >> >> Further, you still need the machinery to export the constants to be able >> to generate these initialization methods. If you've got the machinery and >> you don't need the methods why bother to generate the methods? >> >> As the Scots say, many a mickle makes a muckle. > > > Thank's Eliot for such detailed explanation. It makes sense. > But personally I prefer Smalltalk solution although Smalltalk itself is > pure overhead comparing to C. > > > I can see the draw of the pure Smalltalk. Simplicity and brows ability. > But imagine a tiny headless image deployed on containers, say 2mb. Now > 100kb of initialization code doesn't look so good :-). Anyway I'm beating > a dead horse. Mariano is generating initialization methods. > > > My question was raised by Mariano idea to save ston files in methods. I > think it can reduce problems which you described. > But then literal array syntax can be more suitable than ston. > > > I just want to be clear, I'm neutral about the notation used to export > info from the C file. Liberal array syntax, chunk source format, ston, > xml. It doesn't matter as long as it's convenient at expressing an > attribute dictionary from names to attributes such as value, size, offset. > Don't get hung up on the specific notation. If one were to go with the > external file the only real requirements are that it be reasonably compact > and quick to parse. That might kill xml but leave plenty of other > candidates. > > > _,,,^..^,,,_ (phone) > > -- Mariano http://marianopeck.wordpress.com

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[pharo-project/pharo-core]
by GitHub March 18, 2016

March 18, 2016

Branch: refs/tags/50652 Home: https://github.com/pharo-project/pharo-core

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[pharo-project/pharo-core] 127c6b: 50652
by GitHub March 18, 2016

March 18, 2016

Branch: refs/heads/5.0 Home: https://github.com/pharo-project/pharo-core Commit: 127c6b0286f217e1aea290541a6a21027e161d1c https://github.com/pharo-project/pharo-core/commit/127c6b0286f217e1aea29054… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-03-18 (Fri, 18 Mar 2016) Changed paths: A NewValueHolder.package/CollectionValueHolder.class/instance/announcements/whenAddedDo_.st A NewValueHolder.package/CollectionValueHolder.class/instance/announcements/whenRemovedDo_.st A NewValueHolder.package/CollectionValueHolder.class/instance/announcing/valueAdded_.st A NewValueHolder.package/CollectionValueHolder.class/instance/announcing/valueRemoved_.st M NewValueHolder.package/CollectionValueHolder.class/instance/override/at_put_.st M NewValueHolder.package/CollectionValueHolder.class/instance/protocol/addAllFirstUnlessAlreadyPresent_.st M NewValueHolder.package/CollectionValueHolder.class/instance/protocol/addAllFirst_.st M 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NewValueHolder.package/ValueAdded.class/README.md A NewValueHolder.package/ValueAdded.class/class/instance creation/newValue_.st A NewValueHolder.package/ValueAdded.class/definition.st A NewValueHolder.package/ValueAdded.class/instance/accessing/newValue.st A NewValueHolder.package/ValueAdded.class/instance/accessing/newValue_.st A NewValueHolder.package/ValueRemoved.class/README.md A NewValueHolder.package/ValueRemoved.class/class/instance creation/oldValue_.st A NewValueHolder.package/ValueRemoved.class/definition.st A NewValueHolder.package/ValueRemoved.class/instance/accessing/oldValue.st A NewValueHolder.package/ValueRemoved.class/instance/accessing/oldValue_.st R NewValueHolder.package/extension/Object/class/selectionReactiveVariable.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50651.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50652.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50651.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50652.st M ScriptLoader50.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st M Spec-Core.package/DropListModel.class/instance/initialization/initialize.st A Spec-Core.package/ListModel.class/instance/api/selectedItemsSorted.st M Spec-Core.package/ListModel.class/instance/initialization/initializeValueHolders.st M Tool-ExternalBrowser.package/ExternalChangesBrowser.class/instance/initialization/initializePresenter.st Log Message: ----------- 50652 17843 Changes Browser doesnt recover changes in correct order https://pharo.fogbugz.com/f/cases/17843 17750 Extend CollectionValueHolder with ValueAdded/Removed/Changed https://pharo.fogbugz.com/f/cases/17750 http://files.pharo.org/image/50/50652.zip

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[pharo-project/pharo-core] 660d6d: 50651
by GitHub March 17, 2016

March 17, 2016

Branch: refs/heads/5.0 Home: https://github.com/pharo-project/pharo-core Commit: 660d6dda29c61609b7260e9d453d3e0695dcf95c https://github.com/pharo-project/pharo-core/commit/660d6dda29c61609b7260e9d… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-03-17 (Thu, 17 Mar 2016) Changed paths: M ConfigurationOfGTEventRecorder.package/ConfigurationOfGTEventRecorder.class/instance/symbolic versions/stable_.st A ConfigurationOfGTEventRecorder.package/ConfigurationOfGTEventRecorder.class/instance/versions/version012_.st M ConfigurationOfSessionManager.package/ConfigurationOfSessionManager.class/instance/symbolic versions/stable_.st A ConfigurationOfSessionManager.package/ConfigurationOfSessionManager.class/instance/versions/version14_.st R GT-EventRecorder.package/GTEventTool.class/instance/private/checkProcess.st R GT-EventRecorder.package/GTEventTool.class/instance/updating/update_.st M Polymorph-Widgets.package/Pharo3DarkTheme.class/class/settings/newDefaultSettings.st A Polymorph-Widgets.package/Pharo3DarkTheme.class/instance/accessing colors/balloonBackgroundColor.st M Polymorph-Widgets.package/Pharo3Theme.class/class/settings/newDefaultSettings.st M Polymorph-Widgets.package/UITheme.class/class/accessing/current_.st R Polymorph-Widgets.package/UITheme.class/class/installing/installFullTheme.st A Polymorph-Widgets.package/UITheme.class/instance/accessing colors/balloonBackgroundColor.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50650.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50651.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50650.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50651.st M ScriptLoader50.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st M Settings-Polymorph.package/PolymorphSystemSettings.class/class/morphic/uiThemeClass_.st M System-SessionManager.package/SessionManager.class/class/compatibility - startupList/initializedSessionManager.st M System-SessionManager.package/StartupUIManager.class/instance/error handling/handleError_log_.st Log Message: ----------- 50651 17836 GTEventTool>>#checkProcess has undeclared variables https://pharo.fogbugz.com/f/cases/17836 17834 World Morph is started up before Fonts https://pharo.fogbugz.com/f/cases/17834 16527 All popups very hard to read with white on lightblue https://pharo.fogbugz.com/f/cases/16527 http://files.pharo.org/image/50/50651.zip

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[pharo-project/pharo-core]
by GitHub March 17, 2016

March 17, 2016

Branch: refs/tags/50651 Home: https://github.com/pharo-project/pharo-core

1 0

[pharo-project/pharo-core]
by GitHub March 17, 2016

March 17, 2016

Branch: refs/tags/50650 Home: https://github.com/pharo-project/pharo-core

1 0

[pharo-project/pharo-core] c18da7: 50650
by GitHub March 17, 2016

March 17, 2016

Branch: refs/heads/5.0 Home: https://github.com/pharo-project/pharo-core Commit: c18da766dd585504aa95dad28064460a9f4e1db4 https://github.com/pharo-project/pharo-core/commit/c18da766dd585504aa95dad2… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-03-17 (Thu, 17 Mar 2016) Changed paths: M ConfigurationOfGlamourCore.package/ConfigurationOfGlamourCore.class/instance/symbolic versions/stable_.st A ConfigurationOfGlamourCore.package/ConfigurationOfGlamourCore.class/instance/versions/version47_.st M Glamour-FastTable.package/GLMFastTableDataSource.class/definition.st A Glamour-FastTable.package/GLMFastTableDataSource.class/instance/factory/editRowMorphForColumn_element_.st R Glamour-FastTable.package/GLMFastTableDataSource.class/instance/factory/modified_from_with_.st R Glamour-FastTable.package/GLMFastTableDataSource.class/instance/private/editRowMorphForColumn_element_.st R Glamour-FastTable.package/GLMFastTableDataSource.class/instance/private/forceStopStepping.st R Glamour-FastTable.package/GLMFastTableDataSource.class/instance/private/resetStopStepping.st R Glamour-FastTable.package/GLMFastTableDataSource.class/instance/stepping/shouldStopStepping.st R Glamour-FastTable.package/GLMFastTableDataSource.class/instance/stepping/stepTime.st R Glamour-FastTable.package/GLMFastTableDataSource.class/instance/stepping/wantsSteps.st R Glamour-FastTable.package/extension/FTTableMorph/instance/step.st R Glamour-FastTable.package/extension/FTTableMorph/instance/stepTime.st R Glamour-FastTable.package/extension/FTTableMorph/instance/wantsSteps.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50649.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50650.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50649.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50650.st M ScriptLoader50.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 50650 17837 Revert changes to fast table morph from glamour version 3.15 https://pharo.fogbugz.com/f/cases/17837 http://files.pharo.org/image/50/50650.zip

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[pharo-project/pharo-core]
by GitHub March 17, 2016

March 17, 2016

Branch: refs/tags/50649 Home: https://github.com/pharo-project/pharo-core

1 0

[pharo-project/pharo-core] 495ad9: 50649
by GitHub March 17, 2016

March 17, 2016

Branch: refs/heads/5.0 Home: https://github.com/pharo-project/pharo-core Commit: 495ad98044a6d0dbdfd0f10cc85090bfd9e8fbef https://github.com/pharo-project/pharo-core/commit/495ad98044a6d0dbdfd0f10c… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-03-17 (Thu, 17 Mar 2016) Changed paths: M Monticello.package/extension/RPackageOrganizer/instance/basicInitializeFromMC.st R Monticello.package/extension/RPackageOrganizer/instance/initializeFromMCExtensionsFor_protocol_.st R Monticello.package/extension/RPackageOrganizer/instance/initializeFromMCFor_.st R Monticello.package/extension/RPackageOrganizer/instance/initializeFromMCMethodsFor_.st M Nautilus.package/AbstractNautilusUI.class/instance/system announcements/packageRegistered_.st M Nautilus.package/Nautilus.class/class/accessing/resetGroups.st M Nautilus.package/Nautilus.class/class/groups/buildGroupManager.st M Nautilus.package/Nautilus.class/class/groups/configurationPackages.st M Nautilus.package/PackageTreeModel.class/instance/private/packagesAsNodes.st M NautilusGroupAutoBuilder.package/LoadedPackagesGroupCreatingCodeProvider.class/class/public access/configurationName_versionString_projectName_.st R Polymorph-Widgets.package/Pharo3DarkTheme.class/class/installing/installFullTheme.st R Polymorph-Widgets.package/Pharo3DarkTheme.class/class/settings/setPreferredWorldBackground.st A Polymorph-Widgets.package/Pharo3DarkTheme.class/instance/defaults/shStyleTable.st A Polymorph-Widgets.package/Pharo3DarkTheme.class/instance/fill-styles/desktopColor.st R Polymorph-Widgets.package/Pharo3Theme.class/class/settings/setPreferredWorldBackground.st M Polymorph-Widgets.package/UITheme.class/class/accessing/current_.st M Polymorph-Widgets.package/UITheme.class/class/installing/installFullTheme.st A Polymorph-Widgets.package/UITheme.class/instance/accessing/shStyleTable.st A Polymorph-Widgets.package/UITheme.class/instance/fill-styles/desktopColor.st A RPackage-Core.package/RPackageOrganizer.class/instance/initialization-data/basicInitializeFromPackagesList_.st A RPackage-Core.package/RPackageOrganizer.class/instance/initialization-data/initializeExtensionsFor_protocol_.st A RPackage-Core.package/RPackageOrganizer.class/instance/initialization-data/initializeFor_.st A RPackage-Core.package/RPackageOrganizer.class/instance/initialization-data/initializeFromPackagesList_.st A RPackage-Core.package/RPackageOrganizer.class/instance/initialization-data/initializeMethodsFor_.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50648.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - scripts/script50649.st R ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50648.st A ScriptLoader50.package/ScriptLoader.class/instance/pharo - updates/update50649.st M ScriptLoader50.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 50649 17831 [Theme] Move color changes from #installFullTheme https://pharo.fogbugz.com/f/cases/17831 17397 We have a group for Configurations, we should have one for baselines. https://pharo.fogbugz.com/f/cases/17397 17779 allow RPackageOrganizer initialization from a list of packages https://pharo.fogbugz.com/f/cases/17779 http://files.pharo.org/image/50/50649.zip

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[pharo-project/pharo-core] d50264: 50648
by GitHub March 17, 2016

March 17, 2016

Branch: refs/heads/5.0 Home: https://github.com/pharo-project/pharo-core Commit: d50264541f536e261d08af1de8010a2a12f548c7 https://github.com/pharo-project/pharo-core/commit/d50264541f536e261d08af1d… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-03-17 (Thu, 17 Mar 2016) Changed paths: M ConfigurationOfGTDebugger.package/ConfigurationOfGTDebugger.class/instance/symbolic versions/stable_.st A ConfigurationOfGTDebugger.package/ConfigurationOfGTDebugger.class/instance/versions/version23_.st M ConfigurationOfGTEventRecorder.package/ConfigurationOfGTEventRecorder.class/instance/symbolic versions/stable_.st A ConfigurationOfGTEventRecorder.package/ConfigurationOfGTEventRecorder.class/instance/versions/version011_.st M ConfigurationOfGTInspectorCore.package/ConfigurationOfGTInspectorCore.class/instance/symbolic versions/stable_.st A ConfigurationOfGTInspectorCore.package/ConfigurationOfGTInspectorCore.class/instance/versions/version34_.st M 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