Vm-dev July 2021

vm-dev@lists.squeakfoundation.org

22 participants
176 discussions

[OpenSmalltalk/opensmalltalk-vm] Context >> #printOn: is weird (#536)
by Marcel Taeumel 13 Aug '21

13 Aug '21

VM: win32x86.cog.spur (202011160746, VMMaker.oscog-eem.2887) OS: Windows 10 SQ: Squeak6.0alpha #20077 I suppose that `Context >> #objectClass:` (primitive 111) answers `Context` from time to time. I cannot really debug it, though. Sometimes `Context >> #printOn:` does the right thing. ![grafik](https://user-images.githubusercontent.com/5765308/99515452-459d5b00-298d-11eb-93f3-a617c099a95a.png) -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/536

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[OpenSmalltalk/opensmalltalk-vm] Failing linux build due to error directive in config.h (#560)
by Nicolas Cellier 13 Aug '21

13 Aug '21

The linux builds are failing for a while after some re-arrangement of header order. It happens that config.h cannot work after linux features.h, so the former should be included before the later. An #error directive checks and protect against this case. One possible workaround could be to move #include "config.h" ahead in a few files... -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/560

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[OpenSmalltalk/opensmalltalk-vm] Bintray has reached end-of-life, where can we download the bleeding-edge releases now? (#564)
by Christoph Thiede 13 Aug '21

13 Aug '21

Is it possible to migrate to GitHub prereleases? Also, the badge in the README should be updated. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/564

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[OpenSmalltalk/opensmalltalk-vm] Add vector engine plugin (#578)
by David T Lewis 08 Aug '21

08 Aug '21

Update the VMMaker build scripts to add a repository for VectorEnginePlugin, using a squeaksource mirror of Juan's repository for convenience. Development source for VectorEnginePlugin is Packages/Features/VectorEnginePlugin.pck.st from repository https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev. Disable compiler optimization for VectorEnginePlugin. For gcc this is not an issue, but with llvm any compiler optimization results in a broken plugin (various symptoms). Add -O0 to XCFLAGS in makefile.inc to override any previous definition of -O in CFLAGS. Not included in this PR: VectorEnginePlugin needs to be added to various plugin.ext files. So far I have tested only X86 Linux, so this should be the subject of separate updates. You can view, comment on, or merge this pull request online at: https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/578 -- Commit Summary -- * Add VectorEnginePlugin by Juan Vuletich. * Set preference Scanner allowUnderscoreAsAssignment for VectorEnginePlugin * Merge branch 'Cog' into add-VectorEnginePlugin * Disable compiler optimization for VectorEnginePlugin. -- File Changes -- M image/BuildPharo6VMMakerImage.st (2) M image/BuildSqueakSpurTrunkVMMakerImage.st (2) A platforms/unix/plugins/VectorEnginePlugin/Makefile.inc (3) -- Patch Links -- https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/578.patch https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/578.diff -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/578

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[OpenSmalltalk/opensmalltalk-vm] Getting a segmentation fault on the latest squeak.cog.spur (#574)
by Joseph Turco 06 Aug '21

06 Aug '21

Hello, I have a raspberry pi zero w. i was trying to get the latest stable squeak.cog.spur32ARMv6 to run on my system. When ever i run it, i get a `segmentation fault` with both the Squeak 5.3 image as well as another smalltalk image called "Cuis smalltalk". Is it not working with raspberry pi zeros? -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/574

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[OpenSmalltalk/opensmalltalk-vm] Fixes include order for ARM32 builds. Thanks to Bruce O'Neel! (#577)
by Marcel Taeumel 05 Aug '21

05 Aug '21

You can view, comment on, or merge this pull request online at: https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/577 -- Commit Summary -- * Fixes include order for ARM32 builds. Thanks to Bruce O'Neel! -- File Changes -- M build.linux32ARMv6/squeak.cog.spur/build/mvm (2) M platforms/Cross/plugins/BitBltPlugin/BitBltArmSimd.c (4) M platforms/Cross/plugins/BitBltPlugin/BitBltDispatch.c (14) M platforms/Cross/plugins/BitBltPlugin/BitBltGeneric.c (3) M platforms/Cross/plugins/BitBltPlugin/BitBltInternal.h (2) -- Patch Links -- https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/577.patch https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/577.diff -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/577

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Re: [Vm-dev] Aarch64 number bug
by ken.dickey＠whidbey.com 04 Aug '21

04 Aug '21

> "If the community valued its primary execution technology then it would > be the case that a few members were competent enough to startup the > simulation environment and debug this. " Unfortunately, my attempt to build a VM simulator on aarch64 fails due to a divide by zero bug. Perhaps because 16r8000000000000000 printStringHex. ==> '0' You may be over-estimating my ability to debug this sort of thing. ------------------- In the wider context, my suggestion is to declare, say the first week in July, as "VM Appreciation Week". The observation being that OpenSmalltalk is common to Cuis, Squeak, and Pharo. OpenSmalltalk is open source. OpenSmalltalk is a _Commons_. A "commons" in our case is a shared resource which is managed by its users. To be better managers (or managers at all, rather than just freeloaders), we should take some time to experience it. [a] Build and run a/the simulator, [b] Build a VM. Participation means knowing the resource in order to be able to sustain it. ------------------- OK, so raising awareness to become visible in the right way. There are a few speed bumps to be overcome first. One desires that Joe or Jane coder be able to do [a] and [b] above. Building VMMaker on Linux/x86-64 I get a large number of merge dialogs and then: vvv===vvv This virtual machine is too old to support correct versions of the FloatArray>>at:[put:] primitives 238 and 239. FloatArray subclasses will not behave correctly and FloatArray[64]Test tests will fail. Please upgrade your VM. You may continue and upgrade later or abort and upgrade now. ^^^===^^^ But if I try to build a VM, I run into a number of problems (notes attached; the "included too late" bug shows up in the arm build as well). It is difficult to see today how Joe or Jane can build a VM if like me their knowledge of build mechanics is fairly shallow. Like you all, I have a very busy life. Among other things, given a destabalized climate I am now tending my garden to raise food. On the other hand, I am happy to spend time supporting the OpenSmalltalk Commons as, yes, this _is_ important to me. I don't feel that I have the skillset to fix the current speed bumps, but I certainly would like to declare a "VM Appreciation Week" sometime soon and welcome a discussion on how we engender a better stewardship of our commons.. -KenD

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CogMT
by Marcel Taeumel 04 Aug '21

04 Aug '21

Hi all! Here is a rather broad question: What is "CogMT" about? For whom are those multiple threads (MT)? :-) The only build configuration I can find is build.linux64ARMv8/squeak.cogmt.spur. There is an issue with the type of sqOSSemaphore. That got me interested in the idea of CogMT ... which predates ARMv8 by a lot, right? Best, Marcel *** 2021-07-29T11:17:34.6297654Z In file included from /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/spur64src/vm/cogitARMv8.c:16, 2021-07-29T11:17:34.6305778Z from /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/spur64src/vm/cogit.c:11: 2021-07-29T11:17:34.6312562Z /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/platforms/unix/vm/sqPlatformSpecific.h:75:4: error: conflicting types for 'sqOSSemaphore' 2021-07-29T11:17:34.6323676Z } sqOSSemaphore; 2021-07-29T11:17:34.6324255Z ^~~~~~~~~~~~~ 2021-07-29T11:17:34.6325724Z In file included from /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/platforms/Cross/vm/sqMemoryAccess.h:472, 2021-07-29T11:17:34.6327528Z from /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/platforms/unix/vm/sqPlatformSpecific.h:35, 2021-07-29T11:17:34.6329210Z from /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/spur64src/vm/cogitARMv8.c:16, 2021-07-29T11:17:34.6330958Z from /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/spur64src/vm/cogit.c:11: 2021-07-29T11:17:34.6332629Z /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/platforms/unix/vm/sqPlatformSpecific.h:75:4: note: previous declaration of 'sqOSSemaphore' was here 2021-07-29T11:17:34.6333826Z } sqOSSemaphore; 2021-07-29T11:17:34.6334219Z ^~~~~~~~~~~~~ 2021-07-29T11:17:34.9588384Z In file included from /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/platforms/Cross/vm/dispdbg.h:8, 2021-07-29T11:17:34.9589908Z from /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/spur64src/vm/cogitARMv8.c:19, 2021-07-29T11:17:34.9591283Z from /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/spur64src/vm/cogit.c:11: 2021-07-29T11:17:34.9593124Z /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/spur64src/vm/cogitARMv8.c: In function 'allMachineCodeObjectReferencesValid': 2021-07-29T11:17:34.9605356Z /home/runner/work/opensmalltalk-vm/opensmalltalk-vm/spur64src/vm/cogitARMv8.c:7855:52: warning: passing argument 2 of 'mapForperformUntilarg' from incompatible pointer type [-Wincompatible-pointer-types] 2021-07-29T11:17:34.9607673Z if (!(asserta((mapForperformUntilarg(cogMethod, checkIfValidOopRefAndTargetpccogMethod, cogMethod)) == 0))) { 2021-07-29T11:17:34.9608918Z ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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Re: [Vm-dev] true isReadOnlyObject ~~ false isReadOnlyObject
by Eliot Miranda 02 Aug '21

02 Aug '21

> On Jul 26, 2021, at 7:34 AM, Fabio Niephaus <lists(a)fniephaus.com> wrote: > > > Hi Eliot, > >> On Mon, Jul 26, 2021 at 4:26 PM Eliot Miranda <eliot.miranda(a)gmail.com> wrote: >> Hi Fabio, >>>> On Jul 24, 2021, at 3:27 AM, Fabio Niephaus <lists(a)fniephaus.com> wrote: >>> >>> Hi all, >>> Just scanned my image for read-only objects and these were all their classes: >>> ByteSymbol UndefinedObject ByteString Array GitStamp True ByteArray. >>> For some reason, False seems to be missing. Hence, this is true: >>> `true isReadOnlyObject ~~ false isReadOnlyObject` >>> Seems like a minor bug somewhere? >> Look at my code in the Compiler for setting literals to be read only. Clearly it makes sense to set read only on array literals (Array, ByteArray, ByteString/WideString, ByteSymbol/WideSymbol) and boxed numbers (LargeXXXXiveInteger, BoxedFloat64), but it makes little sense to set nil, true & false to be read only (they have no mutable state and so are effectively read only any way). I expect you’ll find that my code is too careless and accidentally applies read only ness to nil, false and/or true. >> A fix would involve correcting the code and adding a post load action to remove read only ness from nil, false and true. > > Sounds reasonable. Since this is your code, would you mind taking care > of this when you have some time? Yes I would. I am currently mid way through attempting to speed up the FFI having written most of the code to allow much faster invocation of named primitives that don’t use much stack space. Last night I found the new code doesn’t handle failure correctly and will spend the day fixing that. Once I have that robe I can get back to seeing that the new FFI allows Turf to function. And once that is done I can get back to finishing the Terf release. Yo see the effort involved look at the number of methods in the VMMaker.oscog-eem.2994 commit. Clément and I have been wanting to do this for years. It should have a measurable impact on large integer performance, string hash, etc. but it is at least a week’s intense work. So I would really appreciate if someone could take a look at the one method in the bytecode compiler that applies read only ness, and give it the review that it needs, because I didn’t get it right, because it’s there in the image, because it’s an easy task, because it’s a nice gift in a gift economy. > > Many thanks, Snotty passive aggression doesn’t cut it fir me I’m afraid. > Fabio > >>> Cheers, >>> Fabio

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[OpenSmalltalk/opensmalltalk-vm] Fix include order (#562)
by Nicolas Cellier 02 Aug '21

02 Aug '21

This enables the linux builds again, while preserving windows and macos builds. That is a fix for https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/560 If this is compatible with TERF VM, then it should be merged ASAP, the builds are red for too long. (we'll have to inquire next point of failure...) You can view, comment on, or merge this pull request online at: https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/562 -- Commit Summary -- * always include <stdio.h> **BEFORE** defining fseeko/ftello * Discard the EXPORT from sqAssert.h for declaring VM functions * Make sure that config.h is included first * Generate source with VMMaker.oscog-nice.2957 so as to restore sqConfig.h inclusion at top * try and omit HAVE_CONFIG_H for compiling getVersion -- File Changes -- M platforms/Cross/plugins/B3DAcceleratorPlugin/sqOpenGLRenderer.c (3) M platforms/Cross/plugins/IA32ABI/xabicc.c (5) M platforms/Cross/plugins/SoundCodecPrims/sqSoundCodecPluginBasicPrims.c (4) M platforms/Cross/plugins/Squeak3D/b3dInit.c (3) M platforms/Cross/plugins/Squeak3D/b3dMain.c (3) M platforms/Cross/plugins/SurfacePlugin/SurfacePlugin.c (4) M platforms/Cross/vm/sqAssert.h (11) M platforms/Cross/vm/sqHeapMap.c (4) M platforms/Cross/vm/sqSCCSVersion.h (2) M platforms/Cross/vm/sqVirtualMachine.c (3) M platforms/unix/config/getversion.c (1) M platforms/unix/plugins/FileAttributesPlugin/faSupport.c (3) M platforms/unix/vm/aio.c (12) M platforms/unix/vm/sqUnixVMProfile.c (5) M platforms/win32/vm/sqPlatformSpecific.h (1) M spur64src/vm/cogit.h (2) M spur64src/vm/cogitARMv8.c (8) M spur64src/vm/cogitX64SysV.c (8) M spur64src/vm/cogitX64WIN64.c (8) M spur64src/vm/cointerp.c (49) M spur64src/vm/cointerp.h (4) M spur64src/vm/cointerpmt.c (31) M spur64src/vm/cointerpmt.h (3) M spur64src/vm/gcc3x-cointerp.c (49) M spur64src/vm/gcc3x-cointerpmt.c (31) M spurlowcode64src/vm/cogit.h (3) M spurlowcode64src/vm/cogitARMv8.c (16) M spurlowcode64src/vm/cogitX64SysV.c (12) M spurlowcode64src/vm/cogitX64WIN64.c (12) M spurlowcode64src/vm/cointerp.c (53) M spurlowcode64src/vm/cointerp.h (5) M spurlowcode64src/vm/gcc3x-cointerp.c (53) M spurlowcodesrc/vm/cogit.h (3) M spurlowcodesrc/vm/cogitARMv5.c (12) M spurlowcodesrc/vm/cogitIA32.c (12) M spurlowcodesrc/vm/cogitMIPSEL.c (16) M spurlowcodesrc/vm/cointerp.c (57) M spurlowcodesrc/vm/cointerp.h (5) M spurlowcodesrc/vm/gcc3x-cointerp.c (57) M spurlowcodestack64src/vm/gcc3x-interp.c (25) M spurlowcodestack64src/vm/interp.c (25) M spurlowcodestacksrc/vm/gcc3x-interp.c (25) M spurlowcodestacksrc/vm/interp.c (25) M spursista64src/vm/cogit.h (2) M spursista64src/vm/cogitARMv8.c (12) M spursista64src/vm/cogitX64SysV.c (8) M spursista64src/vm/cogitX64WIN64.c (8) M spursista64src/vm/cointerp.c (49) M spursista64src/vm/cointerp.h (4) M spursista64src/vm/gcc3x-cointerp.c (49) M spursistasrc/vm/cogit.h (2) M spursistasrc/vm/cogitARMv5.c (8) M spursistasrc/vm/cogitIA32.c (8) M spursistasrc/vm/cogitMIPSEL.c (14) M spursistasrc/vm/cointerp.c (49) M spursistasrc/vm/cointerp.h (2) M spursistasrc/vm/gcc3x-cointerp.c (49) M spursrc/vm/cogit.h (2) M spursrc/vm/cogitARMv5.c (8) M spursrc/vm/cogitIA32.c (8) M spursrc/vm/cogitMIPSEL.c (10) M spursrc/vm/cointerp.c (57) M spursrc/vm/cointerp.h (4) M spursrc/vm/cointerpmt.c (81) M spursrc/vm/cointerpmt.h (5) M spursrc/vm/gcc3x-cointerp.c (57) M spursrc/vm/gcc3x-cointerpmt.c (81) M spurstack64src/vm/gcc3x-interp.c (25) M spurstack64src/vm/interp.c (25) M spurstack64src/vm/validImage.c (17) M spurstacksrc/vm/gcc3x-interp.c (25) M spurstacksrc/vm/interp.c (25) M spurstacksrc/vm/validImage.c (17) M src/plugins/Squeak3D/Squeak3D.c (8) M src/vm/cogit.h (2) M src/vm/cogitARMv5.c (8) M src/vm/cogitIA32.c (8) M src/vm/cogitMIPSEL.c (12) M src/vm/cointerp.c (10) M src/vm/cointerp.h (2) M src/vm/gcc3x-cointerp.c (10) M stacksrc/vm/gcc3x-interp.c (12) M stacksrc/vm/interp.c (12) -- Patch Links -- https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/562.patch https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/562.diff -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/562

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Vm-dev July 2021