Vm-dev May 2006

vm-dev@lists.squeakfoundation.org

17 participants
25 discussions

Re: [Newbies] A squeak machine?
by Todd Blanchard 05 May '06

05 May '06

There's another list where the squeak vm developers hang out. Try asking over on vm-dev(a)discuss.squeakfoundation.org Your project sounds seriously cool! On May 5, 2006, at 1:20 AM, Jim Davis wrote: > Hi, > I'm just a post silicon test engineer for a company that is > developing a object oriented medium grain parallel processor on a > chip. It's quite a bit like a FPGA, but the chip implements ALU > state machines and table lookup logic. It has multiply / accumulate > (dot product) units, datapath muxes and lots of memory. The kicker > is it's a tagged architecture, with 5 bits riding shotgun on the 16 > bits of data. That's 8 bits of tag and 2 ready bits for a real- > world 32 bit object. I've heard talk in the office that a harvard/ > princeton machine demo hack implementation would be nice, but that > seems really 1950's .My first thought was to build a FORTH machine, > or a bunch of forth machines, But Squeak seems really attractive > and it goes well with the object oriented mindset of the company > and the chip. > So? do you think I should burn a couple hundred hours of my own > time trying to cook this up? > BTW: this thing runs at 1 GHz and has 256 alu's, 64 macs, tons of > registers and scratch and 2X266 Mhz 40 bit ddr2 dram interfaces > with 256 Mwords of store.. > AKA: Mr Jones. > Just how do I implement a parallel or massivly pipeline(d) squeak > machine? > _______________________________________________ > Beginners mailing list > Beginners(a)lists.squeakfoundation.org > http://lists.squeakfoundation.org/mailman/listinfo/beginners

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Trying to build VM using VMMaker on Intel Mac
by Todd Blanchard 05 May '06

05 May '06

I wanted to add a couple plugins (newest OSProcess and ObjectiveCPlugin) so I decided to try building a VM from scratch using VMMaker. I encounter the usual problems I had with Ian's distro - change the SPINLOCK flag to 0 and remove the references to explicit registers in gnu-interp.c I get a build, but it crashes on the switch statement in the interpret loop. I've tried building with plugins external and internal - makes no difference. Complete dump is below - any ideas? Date/Time: 2006-05-03 00:29:12.092 -0700 OS Version: 10.4.6 (Build 8I1119) Report Version: 4 Command: squeak Path: ./squeak Parent: bash [569] Version: ??? (???) PID: 4697 Thread: 5 Exception: EXC_BAD_ACCESS (0x0001) Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x00000246 Thread 0: 0 libSystem.B.dylib 0x9000a4e7 mach_msg_trap + 7 1 com.apple.CoreFoundation 0x9082395e CFRunLoopRunSpecific + 2014 2 com.apple.CoreFoundation 0x90823179 CFRunLoopRunInMode + 61 3 com.apple.HIToolbox 0x92ef9c5c RunCurrentEventLoopInMode + 285 4 com.apple.HIToolbox 0x92ef9363 ReceiveNextEventCommon + 385 5 com.apple.HIToolbox 0x92ef91ba BlockUntilNextEventMatchingListInMode + 81 6 com.apple.AppKit 0x9339aad1 _DPSNextEvent + 576 7 com.apple.AppKit 0x9339a6be -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 137 8 com.apple.AppKit 0x93394443 -[NSApplication run] + 512 Thread 1: 0 libSystem.B.dylib 0x9002755c kevent + 12 1 ...ple.CoreServices.CarbonCore 0x90ca9c14 PrivateMPEntryPoint + 51 2 libSystem.B.dylib 0x90024a27 _pthread_body + 84 Thread 2: 0 libSystem.B.dylib 0x900250c7 semaphore_wait_signal_trap + 7 1 ...ple.CoreServices.CarbonCore 0x90ca9dba MPWaitOnQueue + 198 2 com.apple.DesktopServices 0x92645fc7 TNodeSyncTask::SyncTaskProc(void*) + 143 3 ...ple.CoreServices.CarbonCore 0x90ca9c14 PrivateMPEntryPoint + 51 4 libSystem.B.dylib 0x90024a27 _pthread_body + 84 Thread 3: 0 libSystem.B.dylib 0x90049207 semaphore_timedwait_signal_trap + 7 1 ...ple.CoreServices.CarbonCore 0x90ca9dba MPWaitOnQueue + 198 2 com.apple.DesktopServices 0x92668263 TPropertyTask::PropertyTaskProc(void*) + 101 3 ...ple.CoreServices.CarbonCore 0x90ca9c14 PrivateMPEntryPoint + 51 4 libSystem.B.dylib 0x90024a27 _pthread_body + 84 Thread 4: 0 libSystem.B.dylib 0x90049207 semaphore_timedwait_signal_trap + 7 1 com.apple.Foundation 0x927be978 F_CONDITION_WAIT_TIMEOUT + 128 2 com.apple.Foundation 0x927be8c2 -[NSConditionLock lockWhenCondition:beforeDate:] + 101 3 com.apple.AppKit 0x9365507c + [NSNavFBENodePreviewHelper _subthreadComputePreviewThumbnailImages] + 132 4 com.apple.Foundation 0x927201b0 forkThreadForFunction + 123 5 libSystem.B.dylib 0x90024a27 _pthread_body + 84 Thread 5 Crashed: 0 squeak 0x000164d0 interpret + 50 (gnu- interp.c:5928) 1 libSystem.B.dylib 0x90024a27 _pthread_body + 84 Thread 5 crashed with i386 Thread State: eax: 0x0000006b ebx: 0x0000006b ecx:0xa271de60 edx: 0x17525feb edi: 0x17d38484 esi: 0x17525fec ebp:0xb0322f38 esp: 0xb0322d30 ss: 0x0000002f efl: 0x00010297 eip:0x000164d0 cs: 0x00000027 ds: 0x0000002f es: 0x0000002f fs:0x00000000 gs: 0x00000037 Binary Images Description: 0x1000 - 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0x93f6ffff com.apple.audio.units.AudioUnit 1.4.2 /System/ Library/Frameworks/AudioUnit.framework/Versions/A/AudioUnit 0x93f71000 - 0x9411ffff com.apple.QuartzCore 1.4.7 /System/Library/ Frameworks/QuartzCore.framework/Versions/A/QuartzCore 0x9416d000 - 0x941aefff libsqlite3.0.dylib /usr/lib/libsqlite3.0.dylib 0x941b6000 - 0x941effff libGLImage.dylib /System/Library/Frameworks/ OpenGL.framework/Versions/A/Libraries/libGLImage.dylib 0x9436a000 - 0x94379fff libCGATS.A.dylib /System/Library/Frameworks/ ApplicationServices.framework/Versions/A/Frameworks/ CoreGraphics.framework/Versions/A/Resources/libCGATS.A.dylib 0x94380000 - 0x9438bfff libCSync.A.dylib /System/Library/Frameworks/ ApplicationServices.framework/Versions/A/Frameworks/ CoreGraphics.framework/Versions/A/Resources/libCSync.A.dylib 0x943d7000 - 0x943f1fff libRIP.A.dylib /System/Library/Frameworks/ ApplicationServices.framework/Versions/A/Frameworks/ CoreGraphics.framework/Versions/A/Resources/libRIP.A.dylib Model: MacBookPro1,1, BootROM MBP11.0044.B02, 2 processors, Intel Core Duo, 2 GHz, 2 GB Graphics: ATI Radeon X1600, ATY,RadeonX1600, PCIe, 256 MB Memory Module: DIMM0/BANK 0, 1 GB, DDR2 SDRAM, 667 MHz Memory Module: DIMM1/BANK 1, 1 GB, DDR2 SDRAM, 667 MHz AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x86), 0.1.17 Bluetooth: Version 1.7.3f4, 2 service, 0 devices, 1 incoming serial ports Network Service: Built-in Ethernet, Ethernet, en0 Network Service: AirPort, AirPort, en1 Serial ATA Device: ST910021AS, 93.16 GB Parallel ATA Device: MATSHITADVD-R UJ-857 USB Device: Built-in iSight, Micron, Up to 480 Mb/sec, 500 mA USB Device: Apple Internal Keyboard / Trackpad, Apple Computer, Up to 12 Mb/sec, 500 mA USB Device: IR Receiver, Apple Computer, Inc., Up to 12 Mb/sec, 500 mA USB Device: Bluetooth HCI, Up to 12 Mb/sec, 500 mA

4 9

Suggested change to sqUnixQuartz.m
by Todd Blanchard 03 May '06

03 May '06

change #define USE_SPINLOCK 1 to #define USE_SPINLOCK defined(PPC)

1 0

New VM behaves odd?
by goran＠krampe.se 03 May '06

03 May '06

Hi fellas! I use IRCe under Linux in a 3.8 image and have noticed that with the new VM the UI "blocks" when doing operations like connecting or typing a line of text in the IRC channel etc. For example, I type in a line and press enter - it "hangs" for a second obviously trying to send the line or something, and when it succeeds I get the UI back. I can't say it behaved like this before. Same weird thing happens when I move the IRCe window I think, but I am guessing that is also related to communication - perhaps IRCe tries to poll for more data or something, I dunno. So my question is: Have anyone else noticed Squeak behaving differently with the UI having "blocks" like this with the newest VM? And of course - happen to know why? ;) I haven't had time to figure out a test case yet, just wanted to check my sanity first. regards, Göran

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Access to ExternalObjectsArray from plugin
by Josh Gargus 01 May '06

01 May '06

Hi all, Is there a mechanism for accessing objects in the ExternalObjectsArray from a plugin? For some reason, I thought that there was, but I can't find it in the code (image or vm) or in the various list archives. I was hoping to have a QuickTime callback function (i.e. a function I passed into QuickTime) copy data directly into a Squeak ByteArray, which was to have been looked up by its index in the ExternalObjectsArray. Instead it looks like I'll have to copy it into an ExternalData, and copy it again into a Squeak ByteArray. Is this right? It seems trivial to expose access to the ExternalObjectsArray via the interpreterProxy, and I can't think of any good reason not to. Can you? Can anyone suggest a solution that doesn't involve hacking the VM (writing plugin code is fine)? Thanks, Josh

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Vm-dev May 2006