Vm-dev January 2011

vm-dev@lists.squeakfoundation.org

38 participants
103 discussions

Image freeze because handleTimerEvent and Seaside process gone?!
by Adrian Lienhard 04 Jan '11

04 Jan '11

Hi all, We've been experiencing an "interesting" problem: the image freezes and does not response to HTTP requests anymore after it has been running for days. Here some basic information about our setup: Squeak VM 4.0.3-2202 compiled with gcc 4.3.2 PharoCore 1.1 OS Debian Lenny amd64 (CPUs are 4 Intel Xeon E5530 2.40GHz) - We have never seen the problem with the Squeak VM 3.9-9 and Squeak 3.9 on the identical machine and with the same application source (modulo some adaptations to make it run on Pharo). - We run the VM with -mmap 512m -vm-sound-null -vm-display-null, and the UI process is suspended (Project uiProcess suspend) - VM does not hog the CPU and memory usage is normal - The meantime between failure is several weeks and we haven't managed to reproduce the problem - The application mainly serves HTTP requests. When the image does not receive requests for some time we send it a STOP signal, when a request comes in it is sent a CONT signal. - lsof shows TCP *:9093 (LISTEN) TCP server:9093->server:46930 (CLOSE_WAIT) Below is a GDB backtrace and the Smalltalk stacks from an image that was frozen (the VM had been running for almost 100 hours): ============================================================= (gdb) bt #0 0x08072020 in ?? () #1 <signal handler called> #2 0xb766f5e0 in malloc () from /lib/libc.so.6 #3 <function called from gdb> #4 0xb76c50c8 in select () from /lib/libc.so.6 #5 0x08071063 in aioPoll () #6 0xb778bb8d in ?? () from /usr/lib/squeak/4.0.3-2202//so.vm-display-null #7 0x000003e8 in ?? () #8 0x997b5a34 in ?? () #9 0xbfe7cb28 in ?? () #10 0x08074575 in ioRelinquishProcessorForMicroseconds () Backtrace stopped: frame did not save the PC (gdb) call printCallStack() -1719969228 >idleProcess -1719969320 >startUp -1740134028 BlockClosure>newProcess $3 = -1755344892 (gdb) call (int) printAllStacks() Process -1719969228 >idleProcess -1719969320 >startUp -1740134028 BlockClosure>newProcess Process -1740113860 >finalizationProcess -1740113952 >restartFinalizationProcess -1740113532 BlockClosure>newProcess Process -1740134424 SmalltalkImage>lowSpaceWatcher -1740134516 SmalltalkImage>installLowSpaceWatcher -1740134300 BlockClosure>newProcess Process -1719451488 Delay>wait -1719451580 BlockClosure>ifCurtailed: -1719451704 Delay>wait -1719451796 InputEventPollingFetcher>waitForInput -1740126940 InputEventFetcher>eventLoop -1740127032 InputEventFetcher>installEventLoop -1740126816 BlockClosure>newProcess Process -1719557780 UnixOSProcessAccessor>grimReaperProcess -1740113624 BlockClosure>repeat -1740113716 UnixOSProcessAccessor>grimReaperProcess -1740117340 BlockClosure>newProcess [omitted many newlines between output above] ============================================================= What is striking from the above process listing is that two processes are missing: the handleTimerEvent process and the Seaside process (that is, the TCP listener loop). How comes these processes vanished? This may be related to Pharo or to the Squeak VM. Has anybody else seen this problem? Any idea how to debug/fix this issue is very much appreciated! Cheers, Adrian CCed to pharo-dev since this may be related to Pharo; please respond on the squeak-vm list

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[Vm-dev] OSProcessPlugin: VMConstruction-Plugins-OSProcessPlugin-dtl.27.mcz
by squeak-dev-noreply＠lists.squeakfoundation.org 04 Jan '11

04 Jan '11

Dave Lewis uploaded a new version of VMConstruction-Plugins-OSProcessPlugin to project OSProcessPlugin: http://www.squeaksource.com/OSProcessPlugin/VMConstruction-Plugins-OSProces… ==================== Summary ==================== Name: VMConstruction-Plugins-OSProcessPlugin-dtl.27 Author: dtl Time: 3 January 2011, 9:23:04 am UUID: 54d3c8d8-ce05-4529-9554-4c0cfb2092ad Ancestors: VMConstruction-Plugins-OSProcessPlugin-dtl.26 OSProcessPlugin 4.4.3 Use local vars in #primitiveReapChildProcess to avoid #cCode explicit reference to interpreterProxy variable.

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VM Maker: CMakeVMMaker-EstebanLorenzano.13.mcz
by squeak-dev-noreply＠lists.squeakfoundation.org 04 Jan '11

04 Jan '11

Esteban Lorenzano uploaded a new version of CMakeVMMaker to project VM Maker: http://www.squeaksource.com/VMMaker/CMakeVMMaker-EstebanLorenzano.13.mcz ==================== Summary ==================== Name: CMakeVMMaker-EstebanLorenzano.13 Author: EstebanLorenzano Time: 3 January 2011, 9:05:56 pm UUID: 0c6e3779-8b15-463a-8dbc-1f9d01147ea4 Ancestors: CMakeVMMaker-EstebanLorenzano.Stasenko.12 -lots of small aditions/refactors -CocoaIOSConfig almost working (stupid configuration issue still there)

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[Vm-dev] OSProcessPlugin: VMConstruction-Plugins-OSProcessPlugin-dtl.25.mcz
by squeak-dev-noreply＠lists.squeakfoundation.org 03 Jan '11

03 Jan '11

Dave Lewis uploaded a new version of VMConstruction-Plugins-OSProcessPlugin to project OSProcessPlugin: http://www.squeaksource.com/OSProcessPlugin/VMConstruction-Plugins-OSProces… ==================== Summary ==================== Name: VMConstruction-Plugins-OSProcessPlugin-dtl.25 Author: dtl Time: 31 December 2010, 10:10:07 am UUID: 6ef147f9-8fdc-48b9-af28-4482b4e2a6de Ancestors: VMConstruction-Plugins-OSProcessPlugin-dtl.24 OSProcessPlugin 4.4.1 Fix #primitiveTestEndOfFileFlag to use interpreterProxy primitiveFail. This bug caused linking problems (symbol visibility) on Mac.

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[Vm-dev] OSProcessPlugin: VMConstruction-Plugins-OSProcessPlugin-dtl.26.mcz
by squeak-dev-noreply＠lists.squeakfoundation.org 03 Jan '11

03 Jan '11

Dave Lewis uploaded a new version of VMConstruction-Plugins-OSProcessPlugin to project OSProcessPlugin: http://www.squeaksource.com/OSProcessPlugin/VMConstruction-Plugins-OSProces… ==================== Summary ==================== Name: VMConstruction-Plugins-OSProcessPlugin-dtl.26 Author: dtl Time: 2 January 2011, 10:42:25 am UUID: 8a780c4d-941d-4e9a-a90a-b86deeb8e2c8 Ancestors: VMConstruction-Plugins-OSProcessPlugin-dtl.25 OSProcessPlugin 4.4.2 Fix UnixOSProcessPlugin>>primitiveReapChildProcess to call integerObjectOf() through interpreterProxy. Fix provided by Igor Stasenko, addresses linking issues on Mac for OSPP built as external plugin.

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CMake patches for 32/64 bit VM installations, and a VM selector utility
by David T. Lewis 03 Jan '11

03 Jan '11

Hi Ian, Attached are some platforms/unix changes that provide support for selecting an appropriate VM based on image format, as well as for building and installing the VM for 64-bit images in a separate installation location. With these changes in place you can have a 64-bit VM, a 32-bit VM, and a 32-bit Cog VM running side by side without conflict. Building the 64-bit versus 32-bit interpreter is controlled with a command line option passed to the cmake/configure script. The latest version of SqS/VMMaker is required to provide the ckformat.c program and a hook in Interpreter for checking image format from platform sources. The changes are: platforms/unix/cmake/vmrun.in: New file, creates ${bindir}/vmrun script for selecting a VM based on image file format. Use standard VM by default if Cog or squeak64 are not present. platforms/unix/cmake/configure: If --SQ_VI_BYTES_PER_WORD=8 is specified on command line for the configure script, then configure the build for a 64-bit VM (i.e. a VM to run 64-bit images, whether compiled on a 32 or 64 bit platform). Install executable files in ${plgdir}_64bit/ and install executable script as ${bindir}/squeak64. platforms/unix/vm/build.cmake: Build the ckformat utility program and install it in ${bindir}. The ckformat source code is generated by latest the VMMaker. Support 64-bit VM build for --SQ_VI_BYTES_PER_WORD=8. platforms/unix/vm/config.cmake Support 64-bit VM build for --SQ_VI_BYTES_PER_WORD=8. Adds the SQ_VI_BYTES_PER_WORD macro to config.h to produce a VM for 64-bit images. platforms/unix/cmake/config.in Support 64-bit VM build for --SQ_VI_BYTES_PER_WORD=8. platforms/unix/CMakeLists.txt Support 64-bit VM build for --SQ_VI_BYTES_PER_WORD=8. platforms/unix/vm/sqUnixMain.c: Add "-imageversion" argument to cause the VM to read the image format number for image file specified on command line, print it to stdout and exit. With a 32-bit VM, this works for 32-bit images only, so ckformat is probably the better approach overall (but this is a trivial addition, so I'm adding it here). Cheers, Dave The patched files are attached in platforms-unix.tgz. For reference, the diffs are: =================================================================== RCS file: platforms/unix/vm/RCS/config.cmake,v retrieving revision 1.1 diff -r1.1 platforms/unix/vm/config.cmake 247a248,252 > > IF (DEFINED SQ_VI_BYTES_PER_WORD) > CONFIG_DEFINE (SQ_VI_BYTES_PER_WORD) > ENDIF (DEFINED SQ_VI_BYTES_PER_WORD) > =================================================================== RCS file: platforms/unix/vm/RCS/build.cmake,v retrieving revision 1.1 diff -r1.1 platforms/unix/vm/build.cmake 17a18,21 > ADD_EXECUTABLE (ckformat > ${src}/ckformat.c > ) > 64,65c68,69 < COMMAND sh ${bld}/config ${config}/squeak.in ${bld}/squeak < COMMAND chmod +x ${bld}/squeak --- > COMMAND sh ${bld}/config ${config}/squeak.in ${bld}/squeak${scriptsuffix} > COMMAND chmod +x ${bld}/squeak${scriptsuffix} 74c78,84 < ADD_DEPENDENCIES (squeakvm squeak squeak.sh) --- > ADD_CUSTOM_TARGET (vmrun > DEPENDS ${config}/vmrun.in > COMMAND sh ${bld}/config ${config}/vmrun.in ${bld}/vmrun > COMMAND chmod +x ${bld}/vmrun > ) > > ADD_DEPENDENCIES (squeakvm squeak squeak.sh ckformat vmrun) 76c86 < INSTALL (PROGRAMS ${bld}/squeak DESTINATION bin) --- > INSTALL (PROGRAMS ${bld}/squeak${scriptsuffix} DESTINATION bin) 77a88,89 > INSTALL (PROGRAMS ${bld}/ckformat DESTINATION bin) > INSTALL (PROGRAMS ${bld}/vmrun DESTINATION bin) =================================================================== RCS file: platforms/unix/vm/RCS/sqUnixMain.c,v retrieving revision 1.1 diff -r1.1 platforms/unix/vm/sqUnixMain.c 98a99,100 > static int showImageType= 0; /* print image format on stdout and exit */ > 1055a1058 > else if (!strcmp(argv[0], "-imageversion")) { showImageType = 1; return 1; } 1099a1103 > printf(" -imageversion print image format version, then exit\n"); 1295a1300,1308 > > if (showImageType) /* print image format on stdout and exit */ > { > sqInt imageFormatVersion = readImageFormatFromFileStartingAt(f, 0); > sqImageFileClose(f); > printf("%d", imageFormatVersion); > exit(0); > } > =================================================================== RCS file: platforms/unix/cmake/RCS/vmrun.in,v retrieving revision 1.1 diff -r1.1 platforms/unix/cmake/vmrun.in 0a1,81 > #!/bin/sh > # > # vmrun utility script, Jan 1, 2011 dtl > # > # Select a VM and run an image based on the image format number > # > # Assume that [bindir]/squeak runs the traditional VM, > # [bindir]/cog runs Cog, and [bindir]/squeak64 runs > # a traditional intepreter VM compiled for 64-bit images. > # > # Use ckformat to determine image requirements. See package > # ImageFormat in the SqueakSource VMMaker repository. To > # generate C source for the ckformat utility, evaluate > # "ImageFormat createCkStatusProgram" > # > > BIN=[bindir] > CKFORMAT="$BIN/ckformat" # The ckformat utility > INTERP="$BIN/squeak" # Standard 32-bit interpreter, all 32-bit images > INTERP_64="$BIN/squeak64" # Standard interpreter for 64-bit images > COG="$BIN/cog" # Cog VM for 32-bit images with closure support > > for arg in $* > do > case ${arg} in > -*) #ignore > ;; > *) # either and option argument or the image name > if test -f ${arg} > then > NUM=`$CKFORMAT ${arg} 2>/dev/null` > if test $? -eq 0 > then > IMAGENAME=${arg} > break > fi > else > if test -f ${arg}.image > then > NUM=`$CKFORMAT ${arg}.image 2>/dev/null` > if test $? -eq 0 > then > IMAGENAME=${arg}.image > break > fi > fi > fi > ;; > esac > done > > if test ! ${IMAGENAME} > then > echo `basename $0`: image file not found for \"$0 $@\" > exit 1 > fi > > case $NUM in > 6502) > VM=$INTERP > ;; > 6504 | 6505) > VM=$COG > ;; > 68000 | 68002 | 68003) > VM=$INTERP_64 > ;; > *) echo image format $NUM not recognized; > exit -1;; > esac > > # Use standard VM as default if preferred VM not present > if test ! -x ${VM} > then > echo ${VM} not found, using ${INTERP} > VM="${INTERP}" > fi > > #echo running ${IMAGENAME} with image format $NUM using $VM > exec ${VM} $@ > =================================================================== RCS file: platforms/unix/cmake/RCS/config.in,v retrieving revision 1.1 diff -r1.1 platforms/unix/cmake/config.in 6c6 < s%\[version\]%@version@%g --- > s%\[version\]%@version@@versionsuffix@%g =================================================================== RCS file: platforms/unix/cmake/RCS/configure,v retrieving revision 1.1 diff -r1.1 platforms/unix/cmake/configure 11,17c11,18 < --help print this message and then exit < --src=<directory> look for generated interpreter sources in <directory> < --prefix=<directory> install into <prefix>/{bin,lib,man} < --CFLAGS=<flags> override default compiler flags < --without-<plugin> do not build the named plugin < --without-gl disable everything that depends on OpenGL < --without-SUGAR disable support for SUGAR environment --- > --help print this message and then exit > --src=<directory> find generated interpreter sources in <directory> > --prefix=<directory> install into <prefix>/{bin,lib,man} > --CFLAGS=<flags> override default compiler flags > --without-<plugin> do not build the named plugin > --without-gl disable everything that depends on OpenGL > --without-SUGAR disable support for SUGAR environment > --SQ_VI_BYTES_PER_WORD=8 interpreter for 64-bit images =================================================================== RCS file: platforms/unix/RCS/CMakeLists.txt,v retrieving revision 1.1 diff -r1.1 platforms/unix/CMakeLists.txt 15a16,24 > # If the VM is for 64-bit images, install as squeak64 > IF (DEFINED OPT--SQ_VI_BYTES_PER_WORD) > SET (SQ_VI_BYTES_PER_WORD "${OPT--SQ_VI_BYTES_PER_WORD}") > IF (${SQ_VI_BYTES_PER_WORD} EQUAL 8) > SET (versionsuffix "_64bit") > SET (scriptsuffix "64") > ENDIF (${SQ_VI_BYTES_PER_WORD} EQUAL 8) > ENDIF (DEFINED OPT--SQ_VI_BYTES_PER_WORD) > 22c31 < SET (plgdir lib/squeak/${version}) --- > SET (plgdir lib/squeak/${version}${versionsuffix})

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VM Maker: VMMaker-oscog.43.mcz
by squeak-dev-noreply＠lists.squeakfoundation.org 03 Jan '11

03 Jan '11

Eliot Miranda uploaded a new version of VMMaker to project VM Maker: http://www.squeaksource.com/VMMaker/VMMaker-oscog.43.mcz ==================== Summary ==================== Name: VMMaker-oscog.43 Author: eem Time: 2 January 2011, 2:33:57 am UUID: 9afbc6fa-2adb-4ffe-b0b3-84833ead222d Ancestors: VMMaker-oscog.42 Eliminate some warnings in the CoInterpreter. Stop attemptToSwitchToMachineCode: being inlined to fix apparent optimization bug at -O2 on linux gcc 4.1.2.

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VM Maker: VMMaker-dtl.215.mcz
by squeak-dev-noreply＠lists.squeakfoundation.org 03 Jan '11

03 Jan '11

Dave Lewis uploaded a new version of VMMaker to project VM Maker: http://www.squeaksource.com/VMMaker/VMMaker-dtl.215.mcz ==================== Summary ==================== Name: VMMaker-dtl.215 Author: dtl Time: 2 January 2011, 6:06:06 am UUID: 387bbcc4-55a5-4c6f-b2b8-524602a85605 Ancestors: VMMaker-ar.214 VMMaker 4.4.5 If package ImageFormat is present in the image, use it to generate ckformat.c utility program when building all code from VMMakerTool. Add exported #readImageFormatFromFile:StartingAt: as hook to permite support code to use the interpreter to read image format from an image file. This provides an alternative to ckformat, but limited to 32-bit images only for the 32-bit interpreter.

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PPC is dead
by John M McIntosh 03 Jan '11

03 Jan '11

Someone pointed out to me that they had their "universal" os-x ppc & i386 app rejected. Apple said . Application executables may support either or both of the Intel architectures: * i386 (32-bit) * x86_64 (64-bit) -- =========================================================================== John M. McIntosh <johnmci(a)smalltalkconsulting.com> Twitter: squeaker68882 Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com ===========================================================================

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VM Maker: ImageFormat-dtl.8.mcz
by squeak-dev-noreply＠lists.squeakfoundation.org 03 Jan '11

03 Jan '11

Dave Lewis uploaded a new version of ImageFormat to project VM Maker: http://www.squeaksource.com/VMMaker/ImageFormat-dtl.8.mcz ==================== Summary ==================== Name: ImageFormat-dtl.8 Author: dtl Time: 2 January 2011, 5:57:56 am UUID: b1893ec4-9646-46a4-9aa2-faa210f08c18 Ancestors: ImageFormat-dtl.7 Generate better C source for ckformat utility, and make the generator work with VMMaker.

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Vm-dev January 2011