Vm-dev January 2013

vm-dev@lists.squeakfoundation.org

27 participants
148 discussions

Issue 97 in cog: Sound on Linux
by cog＠googlecode.com 08 Aug '13

08 Aug '13

Status: Accepted Owner: siguc...(a)gmail.com Labels: Type-Defect Priority-Medium New issue 97 by siguc...(a)gmail.com: Sound on Linux http://code.google.com/p/cog/issues/detail?id=97 ... I had to replace the vm-sound-ALSA plugin that comes bundled in the 1.4 one-click image with the so.vm-sound-ALSA one that comes in Squeak 4.3. Couldn't we include that one by default? The one that comes with Pharo doesn't work and reports "could not find module vm-sound-ALSA". ... Looks like run-time link problems, because code we use for this plugin is same.

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Issue 96 in cog: Using >> (bitShift:) instead of pow (raisedTo:)
by cog＠googlecode.com 08 Aug '13

08 Aug '13

Status: Accepted Owner: nicolas....(a)gmail.com Labels: Type-Enhancement Priority-Low New issue 96 by nicolas....(a)gmail.com: Using >> (bitShift:) instead of pow (raisedTo:) http://code.google.com/p/cog/issues/detail?id=96 By virtue of SLANG translation, interpreterAllocationReserveBytes uses pow((double)2,(double)n) to answer an int, wouldn't it better to just use a bit shift? 2^n <=> 1<<n, up to n=31 I doubt we reserve more than that, the result is signed anyway. And this would remove yet another warning. Attachments: interpreterAllocationReserveBytes.st 2.0 KB

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Re: Issue 72 in cog: Don't open an Dialog on Mac in headless mode
by cog＠googlecode.com 08 Aug '13

08 Aug '13

Updates: Status: Accepted Cc: esteba...(a)gmail.com Comment #1 on issue 72 by sean.p.d...(a)gmail.com: Don't open an Dialog on Mac in headless mode http://code.google.com/p/cog/issues/detail?id=72 This is even more important now with the MBP retina. A "headless" cog image always forces the GPU to discrete mode, draining the battery. I often use headless (e.g. for Jenkins jobs and web scrapers) and in addition to the distraction of the unneeded window popping up, the switch to the power hogging GPU for no reason is even more of a drag.

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Re: Issue 44 in cog: Ephemerons integration
by cog＠googlecode.com 08 Aug '13

08 Aug '13

Comment #5 on issue 44 by siguc...(a)gmail.com: Ephemerons integration http://code.google.com/p/cog/issues/detail?id=44 Eliot proposed to change implementation to use separate object format for Ephemerons.

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Accelerating LargeIntegersPlugin phase 2
by Nicolas Cellier 29 Mar '13

29 Mar '13

I published code on SmalltalkHub (nice occasion to test it, and I did not want to pollute source.squeak.org with experimental) in sync with .oscog branch. MCHttpRepository location: 'http://smalltalkhub.com/mc/nice/NiceVMExperiments/main' user: 'nice' password: '' I also blogged about it http://smallissimo.blogspot.fr/2013/01/update-on-squeak-largeinteger-32-bit… I didn't take any care to make the code 64bits friendly. This will require a review... Nicolas

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Re: Issue 92 in cog: 3 LargeInteger arithmetic primitive bugs with minimum signed 64 bit value
by cog＠googlecode.com 12 Mar '13

12 Mar '13

Comment #6 on issue 92 by nicolas....(a)gmail.com: 3 LargeInteger arithmetic primitive bugs with minimum signed 64 bit value http://code.google.com/p/cog/issues/detail?id=92 As long as SmallInteger minVal negated (2^30) fits on 32 bits, there would be no such problem in SmallInteger primitives. AFAICT, 0 - INT_MIN like problem was only in LargeInt primitives, and those are not jitted. However, JIT is clever and for example in genPrimitiveAdd avoid shifting the SmallInteger tag (genShiftAwaySmallIntegerTagsInScratchReg:), and just remove it from one of operands (genRemoveSmallIntegerTagsInScratchReg:) so as to directly produce a tagged integer. Thus, testing if the result fits in 31 bit SmallInteger, become as simple as testing for 32 bit overflow... Testing for overflow is much simpler than in C, see senders of #JumpOverflow: Note that genPrimitiveDivide use another strategy for testing overflow case of (SmallInteger minVal/-1).

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Issue 109 in cog: CogVM crashes with simple code
by cog＠googlecode.com 12 Mar '13

12 Mar '13

Status: New Owner: ---- Labels: Type-Defect Priority-Medium New issue 109 by jonkande...(a)gmail.com: CogVM crashes with simple code http://code.google.com/p/cog/issues/detail?id=109 Below are a few lines of code that crashes the CogVM on both Linux and Windows. File-in the Smalltalk code below, then evaluate [nil crashCogVM]. The code uses [1-1] but it could use [1+1] or [56+98]. I put the code on nil, but that is not important either. I think the important thing is that the primitive (+ or -) is evaluated but the result is not assigned into any variable. Also important is that the code is put into a loop that I assume has been JIT optimized. The image I used is Pharo 1.4 one-click with latest update #14459. This code does not crash StackVM. !UndefinedObject methodsFor: 'crash' stamp: 'JonKAnderson 11/29/2012 17:26'! crashCogVM " Evaluate [ nil crashCogVM ]" | i | i := 20. 1 to: i do: [:d | 1-1 ] ! !

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Re: Issue 110 in cog: ConfigurationOfFFI hangs VM
by cog＠googlecode.com 23 Feb '13

23 Feb '13

Comment #8 on issue 110 by marcus.d...(a)gmail.com: ConfigurationOfFFI hangs VM http://code.google.com/p/cog/issues/detail?id=110 Moved to: Issue cog:110

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one more thing which may be scratch, may be the vm....
by Matthew Miller 14 Feb '13

14 Feb '13

With squeak-vm-4.10.2.2614 with the Scratch plugin that's included, the Help Screens function (which is supposed to launch a browser with HTML help) does not work. If I copy in the so.ScratchPlugin from the Scratch package, however, it works fine. (Code is 'ScratchPlugin primOpenURL: helpDir pathName, FileDirectory slash, aFilename') -- Matthew Miller mattdm(a)mattdm.org <http://mattdm.org/>

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bug leaving full-screen mode (not just for scratch anymore)
by Matthew Miller 01 Feb '13

01 Feb '13

I thought the problem I was having was scratch specific, but I've discovered that it happens more generally. If I use squeak-image 4.3, there's a little icon at the top right for going full-screen, and that works fine to get to full screen, but gives an unresponsive all-black window when clicked again to exit. I'm running squeak-vm-4.10.2.2614 on Fedora 18. -- Matthew Miller mattdm(a)mattdm.org <http://mattdm.org/>

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Vm-dev January 2013