Teleplace Cog VMs are now available

> Hi All,
>
> it gives me great pleasure to announce that the Teleplace Cog VMs are now
> available.  Huge thanks to all at Teleplace who have given me the
> opportunity to build Cog and release it as open source, been willing guinea
> pigs braving its bugs, and providing indispensable participation in getting
> Cog to its current state.  Huge thanks are also due to the original Back To
> The Future team whose VMMaker Cog extends to write the VM, and to Peter
> Deutsch from whom I've taken many ideas.
>
> This release contains two VMs.  The Stack VM, is a cross-platform
> interpreter that uses context-to-stack mapping to achieve modest performance
> gains.  The Cog VM is a just-in-time compiler that currently supports only
> x86 that builds upon the Stack VM to achieve substantial performance
> improvements.  The release is in the form of a Monticello package containing
> the VMMaker source and a tarball containing the platform sources, the
> generated sources and a Squeak 4.1 image containing the VMMaker sources.
> Download both at
>
> http://ftp.squeak.org/Cog/VMMaker-oscog.11.mcz
>
> http://ftp.squeak.org/Cog/OpenSourceCog.tar.gz
>
> Cog VMs:
>
> The Cog VMs are Squeak/Croquet VMs that run closure
> Squeak/Croquet/Pharo/Cuis images. The VMs support existing plugin source but
> will require plugins to be recompiled as the VM_PROXY_MAJOR plugin api has
> been extended.
>
> This release contains two distinct VMs, the StackInterpreter and the Cogit.
> The StackInterpreter is a fully-portable plug-in replacement for the current
> closure Squeak VMs and images.  The Stack VM uses context-to-stack mapping
> and a somewhat improved garbage collector to achieve modest but useful
> performance gains in the 10% to 15% range.  The StackInterpreter is intended
> to supersede the Squeak VM on platforms where the Cogit cannot be used.  The
> Cogit extends the StackInterpreter with a just-in-time compiler that uses
> aggressive inline caching techniques to deliver substantial performance
> gains in the 3x to 15x range, depending on benchmark.  The Cogit currently
> supports only x86 and the floating-point primitives and parts of the
> platform support code depend on SSE2.  I hope members of the community will
> attempt to port it, e.g. to ARM, PowerPC and x86-64.  The Cogit (excuse the
> pun) is so named because it is both an interpreter and a JIT, choosing not
> to generate machine code for large methods, interpreting them instead, the
> default policy being not to JIT methods with more than 60 literals.
>
> The Cog VM requires a few minor image changes all in
> image/NecessaryImageChangesForCogToWork.1.cs.  The JIT's machine-code
> SmallInteger primitives insist on a SmallInteger receiver so the primitives
> in LargePositiveInteger = ~= bitAnd: bitOr: butShift: and bitXor: cannot be
> used and these methods must be deleted.  The Cogit inlines the address of
> the Character instance table, Smalltalk specialObjectsArray at: 25, into the
> machine-code at: primitive for faster ByteString>>at: and so the table
> cannot be rebuilt in SmalltalkImage>>recreateSpecialObjectsArray.  The new
> version preserves the existing table.  Both VMs maintain floats in platform
> order to ease implementation of machine code floating-point primitives, and
> hence internally are in little-endian order instead of big-endian in current
> Squeak images.  While the VMs convert float order automatically on load they
> do require special accessing primitives Float>>basicAt: &
> Float>>basicAt:put: that undo the reversal and answer Float contents in
> big-endian order so that e.g. Float>>hash is unchanged.  The methods assume
> these primitives can fail, allowing the code to be used on current Squeak
> VMs.
>
> The image/VMMaker-Squeak4.1.image is a Squeak 4.1 image, runnable with the
> current Squeak VMs, that contains these changes, and can hence also be run
> with a Cog VM.  But beware, once an image has been saved on Cog it cannot be
> run by an existing Squeak VM, because existing VMs cannot undo the Float
> order change.
>
> Platform Subsystem:
>
> Most of the platform subsystem is unchanged but there are some important
> changes that need description.  The biggest change is the heartbeat and the
> clock in platforms/unix/vm/sqUnixHeartbeat.c and
> platforms/win32/vm/sqWin32Heartbeat.c.  The Cog VMs avoid the slow and
> variable interruptCheckCounter, folding the event check into the stack
> overflow check on frame build.  The heartbeat, typically 500Hz or 1KHz,
> changes the stackLimit to a value that will always fail.  On the next frame
> building send the VM will enter stack overflow handling that, as a side
> effect, will also check for events.  This is more efficient than the update
> of interruptCheckCounter and much more regular.  If one is running code that
> executes long-running primitives (e.g. large integer arithmetic) the counter
> approach will result in too low an interrupt check frequency, and conversely
> if one is running normal code the interrupt check frequency can be very
> high.
>
> The heartbeat also maintains a 64-bit microsecond clock, UTC microseconds
> from 1901, from which the backward-compatible millisecond and second clocks
> are derived.  Primitives exist to answer UTC microseconds and local
> microseconds.  Updating the clock in the heartbeat results in a 1 or 2
> millisecond resolution but avoids the cost of accessing the OS time on every
> prim tie which we've found important for performance at Teleplace.  The
> 64-bit microsecond clocks provide a unified time basis and eliminate
> wrapping (for the next 54,000 years at least).  I hope community images will
> move to these clocks.  It's worked well in VisualWorks.
>
> Another significant change is in the external semaphore table support code.
> This is now lock-free at the cost of having to specify a maximum number of
> external semaphores at start-up (default 256).  The support code for the
> lock-free data structures are processor-specific and is currently
> implemented only for x86 and gcc-compatible compilers; see
> platforms/Cross/vm/{sqAtomicOps.h,sqMemoryFence.h}.
>
> There is also improved crash reporting code that prints a primitive log and
> a C backtrace in addition to the Smalltalk backtrace.  See platforms/Mac
> OS/vm/sqMacMain.c, platforms/unix/vm/sqUnixMain.c,
> platforms/win32/vm/sqWin32Intel.c & platforms/win32/vm/sqWin32Backtrace.c.
>
> Finally there is support for the QVMProfiler, a pc-sampling profiler for
> profiling at the VM level.  See platforms/unix/vm/sqUnixVMProfile.c and
> platforms/win32/vm/sqWin32VMProfile.c.  The profiler itself is in the
> VMMaker image described below in Qwaq-VMProfiling.
>
> There are also changes to do with Teleplace-specific extensions to the
> HostWindowPlugin but these are not essential to Cog.
>
> VMMaker and Slang:
>
> The image/VMMaker-Squeak4.1.image Squeak 4.1 image contains the complete Cog
> VMMaker with necessary support code for simulation. This image was used to
> generate the sources in the src and stacksrc directories.
>
> Cog's VMMaker is substantially revised and extended from the current
> VMMaker.  It supports multiple classes, not just Interpreter and
> superclasses, because both context-to-stack mapping and the Cogit are too
> complex to write monolithically.  Classes can specify ancilliaryClasses and
> ancilliaryStructClasses, such as CoInterpreterStackPage, CogMethod and
> CogAbstractInstruction.  The Monticello package version is included in the
> header of all generated files and constitutes the version stamp for
> generated code.  Code is generated in sorted order so that minor changes in
> the Smalltalk source produce correspondingly minor changes in the generated
> code.  The gnuification step is built-in to VMMaker.  No effort has been
> made to maintain 64-bit compatibility.  Apologies, this was unaffordable.
>
> The VMMaker generates a single source tree used by all platforms.  Instead
> of deciding at generation time whether to use the Interpreter struct the
> generated code depends on the SQ_USE_GLOBAL_STRUCT define which can be
> overridden in platform makefiles.  All plugins live in src/plugins and
> platform makefiles along with plugins.int and plugins.ext files in the build
> subdirectories decide which plugins are built as external or internal.  The
> VM Generation Workspace from Workspace.text workspace contains dots to
> generate the sources.  We no longer use the VMMakerTool since there should
> be nothing platform-specific in the generated sources (if we add ports to
> other ISAs all their source can be included and selected as required by the
> platform makefiles).
>
> Since the Cogit generates x86 machine code simulation is much more complex.
> There is a support plugin, platforms/Cross/plugins/BochsIA32Plugin that
> depends on a large simulation of the x86 family implemented in C++ (see
> processors/IA32/bochs) and on Alien.  I use the simulator frequently (but
> note that I haven't had time to build a working version for Squeak 4.1).  I
> have tested Cog simulation in this image, running on the
> image/VMMaker-Squeak4.1.image itself.  The VM Simulation Workspace in the
> VMMaker image contains an example doit that starts the simulator. Be
> patient, even on a fast machine unhibernating the Squeak display background
> image takes nearly a minute.  Native fonts do not (yet) simulate correctly,
> but the system runs.  But note that I have only attempted to build and run
> the simulator on Mac OS X.  I expect Bochs can be built on linux and win32
> but I have not tried.  By the way, I've not described how to run the Bochs
> simulator on the current Squeak VM.  That's because the plugin depends on
> the heartbeat to break out of simulation occasionally via a new
> interpreterProxy entry point setInterruptCheckChain.  As this isn't
> supported by the current Squeak VMs the plugin would require modification.
> So to simulate first build either of the Cog VMs and then run the simulation
> with it.
>
> There are a number of unpublished changes to the base other than those in
> NecessaryImageChangesForCogToWork.1.cs.  This is partly laziness on my part,
> partly avoiding publishing things in advance of Cog.  These changes are
> better motivated once Cog is in use.  There are changes to the "translated
> primitives" (see implementors of translatedPrimitives) which replace
> messages with method tags for generation directives.  The Cog VMMaker uses
> Object>>perform:with:with:with:with: &
> Object>>perform:with:with:with:with:with: during simulation, and
> Collection>>#fold: & SquenceableCollection>>#copyUpThrough: during
> generation.  Object>>inline: and Object var:declareC:, which are mispackaged
> in Kernel in Squeak 4.1 are obsolete (method tags being used instead) and
> have been removed. I have changed Integer>>hex and Integer>>hex8 back to
> their original semantics as of 3.8.  Backward compatibility is important and
> one can easily add new selectors if one wants different functionality.
> VMMaker was here first ;)
>
> Tarball:
>
> The top-level directories in the tarball are
>
> src
>
> the tree for the Cog generated sources including all plugins
>
> stacksrc/vm
>
> the directory containing the Stack VM source (plugins can be taken from
> above)
>
> platforms
>
> the usual svn platform tree but including Cog specific changes such as the
> heartbeat
>
> processors
>
> the tree containing simulation support code, i.e. the bochs C++ x86
> simulation library, along with a potential ARM, PowerPC & MIPS simulator,
> Skeye.
>
> image
>
> the Cog-prepared Squeak 4.1 VMMaker image
>
> scripts
>
> some svn scripts to revert unchanged plugins that haven't really changed
>
> cygwinbuild
>
> the win32 build directory
>
> winbuild
>
> the old win32 build directory for minnow gcc 2.95.  Not entirely obsolete as
> the cygwin build as yet fails to generate a functional FFIPlugin
>
> macbuild
>
> the CoreVM.xcodeproj and support build projects for Mac OS X 10.5 or better
>
> unixbuild
>
> the build directory for linux
>
> Building Cog:
>
> Each build directory above contains a HowToBuild file that describes
> building in more detail.  The build directories only contain Cogit
> makefiles.  f you want to build a Stack VM you're on your own but this is
> very close to the existing Squeak VM build.
>
> Status:
>
> The Cogit VM has been our sole VM at Teleplace for nearly a year.  We do
> occasionally find bugs and there are almost certainly areas of functionality
> that we have not touched (for example I know that co-routining does not yet
> work).  If you find a bug please try and create a reproducible test case and
> let me know.  I can't promise to take a look or fix it but I am motivated to
> do so and will try my best as time allows.  Better still if you find and fix
> bugs be sure to let me know.
>
> License (MIT):
>
> All contributions from Teleplace in this release are
>
> Copyright (c) 2010 Teleplace, Inc.
>
> Permission is hereby granted, free of charge, to any person obtaining a copy
>
> of this software and associated documentation files (the "Software"), to
> deal
>
> in the Software without restriction, including without limitation the rights
>
> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
>
> copies of the Software, and to permit persons to whom the Software is
>
> furnished to do so, subject to the following conditions:
>
> The above copyright notice and this permission notice shall be included in
>
> all copies or substantial portions of the Software.
>
> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>
> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>
> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
>
> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
>
> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> FROM,
>
> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
>
> THE SOFTWARE.
>
> Eliot Miranda
>
> June 2010
>
>
>
>

> Hi All,
>
> it gives me great pleasure to announce that the Teleplace Cog VMs are now available.  Huge thanks to all at Teleplace who have given me the opportunity to build Cog and release it as open source, been willing guinea pigs braving its bugs, and providing indispensable participation in getting Cog to its current state.  Huge thanks are also due to the original Back To The Future team whose VMMaker Cog extends to write the VM, and to Peter Deutsch from whom I've taken many ideas.
>
> This release contains two VMs.  The Stack VM, is a cross-platform interpreter that uses context-to-stack mapping to achieve modest performance gains.  The Cog VM is a just-in-time compiler that currently supports only x86 that builds upon the Stack VM to achieve substantial performance improvements.  The release is in the form of a Monticello package containing the VMMaker source and a tarball containing the platform sources, the generated sources and a Squeak 4.1 image containing the VMMaker sources.  Download both at
> http://ftp.squeak.org/Cog/VMMaker-oscog.11.mcz
> http://ftp.squeak.org/Cog/OpenSourceCog.tar.gz
>
> Cog VMs:
>
> The Cog VMs are Squeak/Croquet VMs that run closure Squeak/Croquet/Pharo/Cuis images. The VMs support existing plugin source but will require plugins to be recompiled as the VM_PROXY_MAJOR plugin api has been extended.
>
> This release contains two distinct VMs, the StackInterpreter and the Cogit.  The StackInterpreter is a fully-portable plug-in replacement for the current closure Squeak VMs and images.  The Stack VM uses context-to-stack mapping and a somewhat improved garbage collector to achieve modest but useful performance gains in the 10% to 15% range.  The StackInterpreter is intended to supersede the Squeak VM on platforms where the Cogit cannot be used.  The Cogit extends the StackInterpreter with a just-in-time compiler that uses aggressive inline caching techniques to deliver substantial performance gains in the 3x to 15x range, depending on benchmark.  The Cogit currently supports only x86 and the floating-point primitives and parts of the platform support code depend on SSE2.  I hope members of the community will attempt to port it, e.g. to ARM, PowerPC and x86-64.  The Cogit (excuse the pun) is so named because it is both an interpreter and a JIT, choosing not to generate machine code for large methods, interpreting them instead, the default policy being not to JIT methods with more than 60 literals.
>
> The Cog VM requires a few minor image changes all in image/NecessaryImageChangesForCogToWork.1.cs.  The JIT's machine-code SmallInteger primitives insist on a SmallInteger receiver so the primitives in LargePositiveInteger = ~= bitAnd: bitOr: butShift: and bitXor: cannot be used and these methods must be deleted.  The Cogit inlines the address of the Character instance table, Smalltalk specialObjectsArray at: 25, into the machine-code at: primitive for faster ByteString>>at: and so the table cannot be rebuilt in SmalltalkImage>>recreateSpecialObjectsArray.  The new version preserves the existing table.  Both VMs maintain floats in platform order to ease implementation of machine code floating-point primitives, and hence internally are in little-endian order instead of big-endian in current Squeak images.  While the VMs convert float order automatically on load they do require special accessing primitives Float>>basicAt: & Float>>basicAt:put: that undo the reversal and answer Float contents in big-endian order so that e.g. Float>>hash is unchanged.  The methods assume these primitives can fail, allowing the code to be used on current Squeak VMs.
>
> The image/VMMaker-Squeak4.1.image is a Squeak 4.1 image, runnable with the current Squeak VMs, that contains these changes, and can hence also be run with a Cog VM.  But beware, once an image has been saved on Cog it cannot be run by an existing Squeak VM, because existing VMs cannot undo the Float order change.
>
>
> Platform Subsystem:
>
> Most of the platform subsystem is unchanged but there are some important changes that need description.  The biggest change is the heartbeat and the clock in platforms/unix/vm/sqUnixHeartbeat.c and platforms/win32/vm/sqWin32Heartbeat.c.  The Cog VMs avoid the slow and variable interruptCheckCounter, folding the event check into the stack overflow check on frame build.  The heartbeat, typically 500Hz or 1KHz, changes the stackLimit to a value that will always fail.  On the next frame building send the VM will enter stack overflow handling that, as a side effect, will also check for events.  This is more efficient than the update of interruptCheckCounter and much more regular.  If one is running code that executes long-running primitives (e.g. large integer arithmetic) the counter approach will result in too low an interrupt check frequency, and conversely if one is running normal code the interrupt check frequency can be very high.
>
> The heartbeat also maintains a 64-bit microsecond clock, UTC microseconds from 1901, from which the backward-compatible millisecond and second clocks are derived.  Primitives exist to answer UTC microseconds and local microseconds.  Updating the clock in the heartbeat results in a 1 or 2 millisecond resolution but avoids the cost of accessing the OS time on every prim tie which we've found important for performance at Teleplace.  The 64-bit microsecond clocks provide a unified time basis and eliminate wrapping (for the next 54,000 years at least).  I hope community images will move to these clocks.  It's worked well in VisualWorks.
>
> Another significant change is in the external semaphore table support code.  This is now lock-free at the cost of having to specify a maximum number of external semaphores at start-up (default 256).  The support code for the lock-free data structures are processor-specific and is currently implemented only for x86 and gcc-compatible compilers; see platforms/Cross/vm/{sqAtomicOps.h,sqMemoryFence.h}.
>
> There is also improved crash reporting code that prints a primitive log and a C backtrace in addition to the Smalltalk backtrace.  See platforms/Mac OS/vm/sqMacMain.c, platforms/unix/vm/sqUnixMain.c, platforms/win32/vm/sqWin32Intel.c & platforms/win32/vm/sqWin32Backtrace.c.
>
> Finally there is support for the QVMProfiler, a pc-sampling profiler for profiling at the VM level.  See platforms/unix/vm/sqUnixVMProfile.c and platforms/win32/vm/sqWin32VMProfile.c.  The profiler itself is in the VMMaker image described below in Qwaq-VMProfiling.
>
> There are also changes to do with Teleplace-specific extensions to the HostWindowPlugin but these are not essential to Cog.
>
>
> VMMaker and Slang:
>
> The image/VMMaker-Squeak4.1.image Squeak 4.1 image contains the complete Cog VMMaker with necessary support code for simulation. This image was used to generate the sources in the src and stacksrc directories.
>
> Cog's VMMaker is substantially revised and extended from the current VMMaker.  It supports multiple classes, not just Interpreter and superclasses, because both context-to-stack mapping and the Cogit are too complex to write monolithically.  Classes can specify ancilliaryClasses and ancilliaryStructClasses, such as CoInterpreterStackPage, CogMethod and CogAbstractInstruction.  The Monticello package version is included in the header of all generated files and constitutes the version stamp for generated code.  Code is generated in sorted order so that minor changes in the Smalltalk source produce correspondingly minor changes in the generated code.  The gnuification step is built-in to VMMaker.  No effort has been made to maintain 64-bit compatibility.  Apologies, this was unaffordable.
>
> The VMMaker generates a single source tree used by all platforms.  Instead of deciding at generation time whether to use the Interpreter struct the generated code depends on the SQ_USE_GLOBAL_STRUCT define which can be overridden in platform makefiles.  All plugins live in src/plugins and platform makefiles along with plugins.int and plugins.ext files in the build subdirectories decide which plugins are built as external or internal.  The VM Generation Workspace from Workspace.text workspace contains dots to generate the sources.  We no longer use the VMMakerTool since there should be nothing platform-specific in the generated sources (if we add ports to other ISAs all their source can be included and selected as required by the platform makefiles).
>
> Since the Cogit generates x86 machine code simulation is much more complex.  There is a support plugin, platforms/Cross/plugins/BochsIA32Plugin that depends on a large simulation of the x86 family implemented in C++ (see  processors/IA32/bochs) and on Alien.  I use the simulator frequently (but note that I haven't had time to build a working version for Squeak 4.1).  I have tested Cog simulation in this image, running on the image/VMMaker-Squeak4.1.image itself.  The VM Simulation Workspace in the VMMaker image contains an example doit that starts the simulator. Be patient, even on a fast machine unhibernating the Squeak display background image takes nearly a minute.  Native fonts do not (yet) simulate correctly, but the system runs.  But note that I have only attempted to build and run the simulator on Mac OS X.  I expect Bochs can be built on linux and win32 but I have not tried.  By the way, I've not described how to run the Bochs simulator on the current Squeak VM.  That's because the plugin depends on the heartbeat to break out of simulation occasionally via a new interpreterProxy entry point setInterruptCheckChain.  As this isn't supported by the current Squeak VMs the plugin would require modification.  So to simulate first build either of the Cog VMs and then run the simulation with it.
>
> There are a number of unpublished changes to the base other than those in NecessaryImageChangesForCogToWork.1.cs.  This is partly laziness on my part, partly avoiding publishing things in advance of Cog.  These changes are better motivated once Cog is in use.  There are changes to the "translated primitives" (see implementors of translatedPrimitives) which replace messages with method tags for generation directives.  The Cog VMMaker uses Object>>perform:with:with:with:with: & Object>>perform:with:with:with:with:with: during simulation, and Collection>>#fold: & SquenceableCollection>>#copyUpThrough: during generation.  Object>>inline: and Object var:declareC:, which are mispackaged in Kernel in Squeak 4.1 are obsolete (method tags being used instead) and have been removed. I have changed Integer>>hex and Integer>>hex8 back to their original semantics as of 3.8.  Backward compatibility is important and one can easily add new selectors if one wants different functionality.  VMMaker was here first ;)
>
>
> Tarball:
>
> The top-level directories in the tarball are
>
> src
> the tree for the Cog generated sources including all plugins
> stacksrc/vm
> the directory containing the Stack VM source (plugins can be taken from above)
> platforms
> the usual svn platform tree but including Cog specific changes such as the heartbeat
> processors
> the tree containing simulation support code, i.e. the bochs C++ x86 simulation library, along with a potential ARM, PowerPC & MIPS simulator, Skeye.
>
> image
> the Cog-prepared Squeak 4.1 VMMaker image
> scripts
> some svn scripts to revert unchanged plugins that haven't really changed
>
> cygwinbuild
> the win32 build directory
> winbuild
> the old win32 build directory for minnow gcc 2.95.  Not entirely obsolete as the cygwin build as yet fails to generate a functional FFIPlugin
> macbuild
> the CoreVM.xcodeproj and support build projects for Mac OS X 10.5 or better
> unixbuild
> the build directory for linux
>
>
> Building Cog:
>
> Each build directory above contains a HowToBuild file that describes building in more detail.  The build directories only contain Cogit makefiles.  f you want to build a Stack VM you're on your own but this is very close to the existing Squeak VM build.
>
>
> Status:
> The Cogit VM has been our sole VM at Teleplace for nearly a year.  We do occasionally find bugs and there are almost certainly areas of functionality that we have not touched (for example I know that co-routining does not yet work).  If you find a bug please try and create a reproducible test case and let me know.  I can't promise to take a look or fix it but I am motivated to do so and will try my best as time allows.  Better still if you find and fix bugs be sure to let me know.
>
> License (MIT):
> All contributions from Teleplace in this release are
> Copyright (c) 2010 Teleplace, Inc.
>
> Permission is hereby granted, free of charge, to any person obtaining a copy
> of this software and associated documentation files (the "Software"), to deal
> in the Software without restriction, including without limitation the rights
> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> copies of the Software, and to permit persons to whom the Software is
> furnished to do so, subject to the following conditions:
>
> The above copyright notice and this permission notice shall be included in
> all copies or substantial portions of the Software.
>
> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
> THE SOFTWARE.
>
> Eliot Miranda
> June 2010
>
>

> This is really an excellent news. I open a lot of new futures!
> Thanks teleplace, andreas and all the people that helped.
>
> Stef
> PS: you already answer my questions about platform were the jit cannot work so this is great.
>
>
> On Jun 20, 2010, at 10:11 PM, Eliot Miranda wrote:
>
>> Hi All,
>>
>>       it gives me great pleasure to announce that the Teleplace Cog VMs are now available.  Huge thanks to all at Teleplace who have given me the opportunity to build Cog and release it as open source, been willing guinea pigs braving its bugs, and providing indispensable participation in getting Cog to its current state.  Huge thanks are also due to the original Back To The Future team whose VMMaker Cog extends to write the VM, and to Peter Deutsch from whom I've taken many ideas.
>>
>> This release contains two VMs.  The Stack VM, is a cross-platform interpreter that uses context-to-stack mapping to achieve modest performance gains.  The Cog VM is a just-in-time compiler that currently supports only x86 that builds upon the Stack VM to achieve substantial performance improvements.  The release is in the form of a Monticello package containing the VMMaker source and a tarball containing the platform sources, the generated sources and a Squeak 4.1 image containing the VMMaker sources.  Download both at
>>       http://ftp.squeak.org/Cog/VMMaker-oscog.11.mcz
>>       http://ftp.squeak.org/Cog/OpenSourceCog.tar.gz
>>
>> Cog VMs:
>>
>> The Cog VMs are Squeak/Croquet VMs that run closure Squeak/Croquet/Pharo/Cuis images. The VMs support existing plugin source but will require plugins to be recompiled as the VM_PROXY_MAJOR plugin api has been extended.
>>
>> This release contains two distinct VMs, the StackInterpreter and the Cogit.  The StackInterpreter is a fully-portable plug-in replacement for the current closure Squeak VMs and images.  The Stack VM uses context-to-stack mapping and a somewhat improved garbage collector to achieve modest but useful performance gains in the 10% to 15% range.  The StackInterpreter is intended to supersede the Squeak VM on platforms where the Cogit cannot be used.  The Cogit extends the StackInterpreter with a just-in-time compiler that uses aggressive inline caching techniques to deliver substantial performance gains in the 3x to 15x range, depending on benchmark.  The Cogit currently supports only x86 and the floating-point primitives and parts of the platform support code depend on SSE2.  I hope members of the community will attempt to port it, e.g. to ARM, PowerPC and x86-64.  The Cogit (excuse the pun) is so named because it is both an interpreter and a JIT, choosing not to generate machine code for large methods, interpreting them instead, the default policy being not to JIT methods with more than 60 literals.
>>
>> The Cog VM requires a few minor image changes all in image/NecessaryImageChangesForCogToWork.1.cs.  The JIT's machine-code SmallInteger primitives insist on a SmallInteger receiver so the primitives in LargePositiveInteger = ~= bitAnd: bitOr: butShift: and bitXor: cannot be used and these methods must be deleted.  The Cogit inlines the address of the Character instance table, Smalltalk specialObjectsArray at: 25, into the machine-code at: primitive for faster ByteString>>at: and so the table cannot be rebuilt in SmalltalkImage>>recreateSpecialObjectsArray.  The new version preserves the existing table.  Both VMs maintain floats in platform order to ease implementation of machine code floating-point primitives, and hence internally are in little-endian order instead of big-endian in current Squeak images.  While the VMs convert float order automatically on load they do require special accessing primitives Float>>basicAt: & Float>>basicAt:put: that undo the reversal and answer Float contents in big-endian order so that e.g. Float>>hash is unchanged.  The methods assume these primitives can fail, allowing the code to be used on current Squeak VMs.
>>
>> The image/VMMaker-Squeak4.1.image is a Squeak 4.1 image, runnable with the current Squeak VMs, that contains these changes, and can hence also be run with a Cog VM.  But beware, once an image has been saved on Cog it cannot be run by an existing Squeak VM, because existing VMs cannot undo the Float order change.
>>
>>
>> Platform Subsystem:
>>
>> Most of the platform subsystem is unchanged but there are some important changes that need description.  The biggest change is the heartbeat and the clock in platforms/unix/vm/sqUnixHeartbeat.c and platforms/win32/vm/sqWin32Heartbeat.c.  The Cog VMs avoid the slow and variable interruptCheckCounter, folding the event check into the stack overflow check on frame build.  The heartbeat, typically 500Hz or 1KHz, changes the stackLimit to a value that will always fail.  On the next frame building send the VM will enter stack overflow handling that, as a side effect, will also check for events.  This is more efficient than the update of interruptCheckCounter and much more regular.  If one is running code that executes long-running primitives (e.g. large integer arithmetic) the counter approach will result in too low an interrupt check frequency, and conversely if one is running normal code the interrupt check frequency can be very high.
>>
>> The heartbeat also maintains a 64-bit microsecond clock, UTC microseconds from 1901, from which the backward-compatible millisecond and second clocks are derived.  Primitives exist to answer UTC microseconds and local microseconds.  Updating the clock in the heartbeat results in a 1 or 2 millisecond resolution but avoids the cost of accessing the OS time on every prim tie which we've found important for performance at Teleplace.  The 64-bit microsecond clocks provide a unified time basis and eliminate wrapping (for the next 54,000 years at least).  I hope community images will move to these clocks.  It's worked well in VisualWorks.
>>
>> Another significant change is in the external semaphore table support code.  This is now lock-free at the cost of having to specify a maximum number of external semaphores at start-up (default 256).  The support code for the lock-free data structures are processor-specific and is currently implemented only for x86 and gcc-compatible compilers; see platforms/Cross/vm/{sqAtomicOps.h,sqMemoryFence.h}.
>>
>> There is also improved crash reporting code that prints a primitive log and a C backtrace in addition to the Smalltalk backtrace.  See platforms/Mac OS/vm/sqMacMain.c, platforms/unix/vm/sqUnixMain.c, platforms/win32/vm/sqWin32Intel.c & platforms/win32/vm/sqWin32Backtrace.c.
>>
>> Finally there is support for the QVMProfiler, a pc-sampling profiler for profiling at the VM level.  See platforms/unix/vm/sqUnixVMProfile.c and platforms/win32/vm/sqWin32VMProfile.c.  The profiler itself is in the VMMaker image described below in Qwaq-VMProfiling.
>>
>> There are also changes to do with Teleplace-specific extensions to the HostWindowPlugin but these are not essential to Cog.
>>
>>
>> VMMaker and Slang:
>>
>> The image/VMMaker-Squeak4.1.image Squeak 4.1 image contains the complete Cog VMMaker with necessary support code for simulation. This image was used to generate the sources in the src and stacksrc directories.
>>
>> Cog's VMMaker is substantially revised and extended from the current VMMaker.  It supports multiple classes, not just Interpreter and superclasses, because both context-to-stack mapping and the Cogit are too complex to write monolithically.  Classes can specify ancilliaryClasses and ancilliaryStructClasses, such as CoInterpreterStackPage, CogMethod and CogAbstractInstruction.  The Monticello package version is included in the header of all generated files and constitutes the version stamp for generated code.  Code is generated in sorted order so that minor changes in the Smalltalk source produce correspondingly minor changes in the generated code.  The gnuification step is built-in to VMMaker.  No effort has been made to maintain 64-bit compatibility.  Apologies, this was unaffordable.
>>
>> The VMMaker generates a single source tree used by all platforms.  Instead of deciding at generation time whether to use the Interpreter struct the generated code depends on the SQ_USE_GLOBAL_STRUCT define which can be overridden in platform makefiles.  All plugins live in src/plugins and platform makefiles along with plugins.int and plugins.ext files in the build subdirectories decide which plugins are built as external or internal.  The VM Generation Workspace from Workspace.text workspace contains dots to generate the sources.  We no longer use the VMMakerTool since there should be nothing platform-specific in the generated sources (if we add ports to other ISAs all their source can be included and selected as required by the platform makefiles).
>>
>> Since the Cogit generates x86 machine code simulation is much more complex.  There is a support plugin, platforms/Cross/plugins/BochsIA32Plugin that depends on a large simulation of the x86 family implemented in C++ (see  processors/IA32/bochs) and on Alien.  I use the simulator frequently (but note that I haven't had time to build a working version for Squeak 4.1).  I have tested Cog simulation in this image, running on the image/VMMaker-Squeak4.1.image itself.  The VM Simulation Workspace in the VMMaker image contains an example doit that starts the simulator. Be patient, even on a fast machine unhibernating the Squeak display background image takes nearly a minute.  Native fonts do not (yet) simulate correctly, but the system runs.  But note that I have only attempted to build and run the simulator on Mac OS X.  I expect Bochs can be built on linux and win32 but I have not tried.  By the way, I've not described how to run the Bochs simulator on the current Squeak VM.  That's because the plugin depends on the heartbeat to break out of simulation occasionally via a new interpreterProxy entry point setInterruptCheckChain.  As this isn't supported by the current Squeak VMs the plugin would require modification.  So to simulate first build either of the Cog VMs and then run the simulation with it.
>>
>> There are a number of unpublished changes to the base other than those in NecessaryImageChangesForCogToWork.1.cs.  This is partly laziness on my part, partly avoiding publishing things in advance of Cog.  These changes are better motivated once Cog is in use.  There are changes to the "translated primitives" (see implementors of translatedPrimitives) which replace messages with method tags for generation directives.  The Cog VMMaker uses Object>>perform:with:with:with:with: & Object>>perform:with:with:with:with:with: during simulation, and Collection>>#fold: & SquenceableCollection>>#copyUpThrough: during generation.  Object>>inline: and Object var:declareC:, which are mispackaged in Kernel in Squeak 4.1 are obsolete (method tags being used instead) and have been removed. I have changed Integer>>hex and Integer>>hex8 back to their original semantics as of 3.8.  Backward compatibility is important and one can easily add new selectors if one wants different functionality.  VMMaker was here first ;)
>>
>>
>> Tarball:
>>
>> The top-level directories in the tarball are
>>
>>       src
>>               the tree for the Cog generated sources including all plugins
>>       stacksrc/vm
>>               the directory containing the Stack VM source (plugins can be taken from above)
>>       platforms
>>               the usual svn platform tree but including Cog specific changes such as the heartbeat
>>       processors
>>               the tree containing simulation support code, i.e. the bochs C++ x86 simulation library, along with a potential ARM, PowerPC & MIPS simulator, Skeye.
>>
>>       image
>>               the Cog-prepared Squeak 4.1 VMMaker image
>>       scripts
>>               some svn scripts to revert unchanged plugins that haven't really changed
>>
>>       cygwinbuild
>>               the win32 build directory
>>       winbuild
>>               the old win32 build directory for minnow gcc 2.95.  Not entirely obsolete as the cygwin build as yet fails to generate a functional FFIPlugin
>>       macbuild
>>               the CoreVM.xcodeproj and support build projects for Mac OS X 10.5 or better
>>       unixbuild
>>               the build directory for linux
>>
>>
>> Building Cog:
>>
>> Each build directory above contains a HowToBuild file that describes building in more detail.  The build directories only contain Cogit makefiles.  f you want to build a Stack VM you're on your own but this is very close to the existing Squeak VM build.
>>
>>
>> Status:
>> The Cogit VM has been our sole VM at Teleplace for nearly a year.  We do occasionally find bugs and there are almost certainly areas of functionality that we have not touched (for example I know that co-routining does not yet work).  If you find a bug please try and create a reproducible test case and let me know.  I can't promise to take a look or fix it but I am motivated to do so and will try my best as time allows.  Better still if you find and fix bugs be sure to let me know.
>>
>> License (MIT):
>> All contributions from Teleplace in this release are
>> Copyright (c) 2010 Teleplace, Inc.
>>
>> Permission is hereby granted, free of charge, to any person obtaining a copy
>> of this software and associated documentation files (the "Software"), to deal
>> in the Software without restriction, including without limitation the rights
>> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
>> copies of the Software, and to permit persons to whom the Software is
>> furnished to do so, subject to the following conditions:
>>
>> The above copyright notice and this permission notice shall be included in
>> all copies or substantial portions of the Software.
>>
>> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
>> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
>> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
>> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
>> THE SOFTWARE.
>>
>> Eliot Miranda
>> June 2010
>>
>>
>
>
>

> (I ALWAYS struggle with build.bat, missing files, environment variables,
> and the like...)
>
> Take care,
>
> Rob
>
> On Sun, Jun 20, 2010 at 5:37 PM, John M McIntosh
> <[hidden email]
> <mailto:[hidden email]>> wrote:
>
>
>     Wonderful news.
>
>
>     On 2010-06-20, at 1:11 PM, Eliot Miranda wrote:
>
>>      The Cogit currently supports only x86 and the floating-point
>>     primitives and parts of the platform support code depend on SSE2.
>>     I hope members of the community will attempt to port it, e.g. to
>>     ARM, PowerPC and x86-64.
>
>     Now before anyone asks, it's very doubtful you will see Cogit on the
>     iOS series of operating systems (iphone/ipad). I have had detailed
>     discussions with the Apple Security team since their goal is to
>     prevent user level code from doing dynamic code generation.
>
>     mmap for example won't return a page of memory that is executable.
>
>     Let's say the probability of getting Apple to change their minds on
>     this is zero.
>
>     However I'll look into the StackInterpreter for the Macintosh 5.x VM
>     and the iOS flavour, mind if anyone wants to do that chore early
>     then they should ping me.
>
>
>     --
>     ===========================================================================
>     John M. McIntosh <[hidden email]
>     <mailto:[hidden email]>>   Twitter:  squeaker68882
>     Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com
>     ===========================================================================
>
>
>
>
>
>

>
> Thank you Eliot.
>
> This is wonderful, it feels like I just got a new laptop :-)
>
> I noticed some problems in the continuation tests of Seaside
> (WAContinuationTest, WAFlowPlatformTest and
> WAPartialContinuationTest):
>
>     "Computation has been terminated" in MethodContext>>cannotReturn:
>
> Is this a known problem? Or is this maybe specific to Pharo on Cog?

> On 20 June 2010 22:53, stephane ducasse<[hidden email]>  wrote:
>> This is really an excellent news. I open a lot of new futures!
>> Thanks teleplace, andreas and all the people that helped.
>>
>> Stef
>> PS: you already answer my questions about platform were the jit cannot work so this is great.
>>
>>
>> On Jun 20, 2010, at 10:11 PM, Eliot Miranda wrote:
>>
>>> Hi All,
>>>
>>>        it gives me great pleasure to announce that the Teleplace Cog VMs are now available.  Huge thanks to all at Teleplace who have given me the opportunity to build Cog and release it as open source, been willing guinea pigs braving its bugs, and providing indispensable participation in getting Cog to its current state.  Huge thanks are also due to the original Back To The Future team whose VMMaker Cog extends to write the VM, and to Peter Deutsch from whom I've taken many ideas.
>>>
>>> This release contains two VMs.  The Stack VM, is a cross-platform interpreter that uses context-to-stack mapping to achieve modest performance gains.  The Cog VM is a just-in-time compiler that currently supports only x86 that builds upon the Stack VM to achieve substantial performance improvements.  The release is in the form of a Monticello package containing the VMMaker source and a tarball containing the platform sources, the generated sources and a Squeak 4.1 image containing the VMMaker sources.  Download both at
>>>        http://ftp.squeak.org/Cog/VMMaker-oscog.11.mcz
>>>        http://ftp.squeak.org/Cog/OpenSourceCog.tar.gz
>>>
>>> Cog VMs:
>>>
>>> The Cog VMs are Squeak/Croquet VMs that run closure Squeak/Croquet/Pharo/Cuis images. The VMs support existing plugin source but will require plugins to be recompiled as the VM_PROXY_MAJOR plugin api has been extended.
>>>
>>> This release contains two distinct VMs, the StackInterpreter and the Cogit.  The StackInterpreter is a fully-portable plug-in replacement for the current closure Squeak VMs and images.  The Stack VM uses context-to-stack mapping and a somewhat improved garbage collector to achieve modest but useful performance gains in the 10% to 15% range.  The StackInterpreter is intended to supersede the Squeak VM on platforms where the Cogit cannot be used.  The Cogit extends the StackInterpreter with a just-in-time compiler that uses aggressive inline caching techniques to deliver substantial performance gains in the 3x to 15x range, depending on benchmark.  The Cogit currently supports only x86 and the floating-point primitives and parts of the platform support code depend on SSE2.  I hope members of the community will attempt to port it, e.g. to ARM, PowerPC and x86-64.  The Cogit (excuse the pun) is so named because it is both an interpreter and a JIT, choosing not to generate ma

>>>
>>> The image/VMMaker-Squeak4.1.image is a Squeak 4.1 image, runnable with the current Squeak VMs, that contains these changes, and can hence also be run with a Cog VM.  But beware, once an image has been saved on Cog it cannot be run by an existing Squeak VM, because existing VMs cannot undo the Float order change.
>>>
>>>
>>> Platform Subsystem:
>>>
>>> Most of the platform subsystem is unchanged but there are some important changes that need description.  The biggest change is the heartbeat and the clock in platforms/unix/vm/sqUnixHeartbeat.c and platforms/win32/vm/sqWin32Heartbeat.c.  The Cog VMs avoid the slow and variable interruptCheckCounter, folding the event check into the stack overflow check on frame build.  The heartbeat, typically 500Hz or 1KHz, changes the stackLimit to a value that will always fail.  On the next frame building send the VM will enter stack overflow handling that, as a side effect, will also check for events.  This is more efficient than the update of interruptCheckCounter and much more regular.  If one is running code that executes long-running primitives (e.g. large integer arithmetic) the counter approach will result in too low an interrupt check frequency, and conversely if one is running normal code the interrupt check frequency can be very high.
>>>
>>> The heartbeat also maintains a 64-bit microsecond clock, UTC microseconds from 1901, from which the backward-compatible millisecond and second clocks are derived.  Primitives exist to answer UTC microseconds and local microseconds.  Updating the clock in the heartbeat results in a 1 or 2 millisecond resolution but avoids the cost of accessing the OS time on every prim tie which we've found important for performance at Teleplace.  The 64-bit microsecond clocks provide a unified time basis and eliminate wrapping (for the next 54,000 years at least).  I hope community images will move to these clocks.  It's worked well in VisualWorks.
>>>
>>> Another significant change is in the external semaphore table support code.  This is now lock-free at the cost of having to specify a maximum number of external semaphores at start-up (default 256).  The support code for the lock-free data structures are processor-specific and is currently implemented only for x86 and gcc-compatible compilers; see platforms/Cross/vm/{sqAtomicOps.h,sqMemoryFence.h}.
>>>
>>> There is also improved crash reporting code that prints a primitive log and a C backtrace in addition to the Smalltalk backtrace.  See platforms/Mac OS/vm/sqMacMain.c, platforms/unix/vm/sqUnixMain.c, platforms/win32/vm/sqWin32Intel.c&  platforms/win32/vm/sqWin32Backtrace.c.
>>>
>>> Finally there is support for the QVMProfiler, a pc-sampling profiler for profiling at the VM level.  See platforms/unix/vm/sqUnixVMProfile.c and platforms/win32/vm/sqWin32VMProfile.c.  The profiler itself is in the VMMaker image described below in Qwaq-VMProfiling.
>>>
>>> There are also changes to do with Teleplace-specific extensions to the HostWindowPlugin but these are not essential to Cog.
>>>
>>>
>>> VMMaker and Slang:
>>>
>>> The image/VMMaker-Squeak4.1.image Squeak 4.1 image contains the complete Cog VMMaker with necessary support code for simulation. This image was used to generate the sources in the src and stacksrc directories.
>>>
>>> Cog's VMMaker is substantially revised and extended from the current VMMaker.  It supports multiple classes, not just Interpreter and superclasses, because both context-to-stack mapping and the Cogit are too complex to write monolithically.  Classes can specify ancilliaryClasses and ancilliaryStructClasses, such as CoInterpreterStackPage, CogMethod and CogAbstractInstruction.  The Monticello package version is included in the header of all generated files and constitutes the version stamp for generated code.  Code is generated in sorted order so that minor changes in the Smalltalk source produce correspondingly minor changes in the generated code.  The gnuification step is built-in to VMMaker.  No effort has been made to maintain 64-bit compatibility.  Apologies, this was unaffordable.
>>>
>>> The VMMaker generates a single source tree used by all platforms.  Instead of deciding at generation time whether to use the Interpreter struct the generated code depends on the SQ_USE_GLOBAL_STRUCT define which can be overridden in platform makefiles.  All plugins live in src/plugins and platform makefiles along with plugins.int and plugins.ext files in the build subdirectories decide which plugins are built as external or internal.  The VM Generation Workspace from Workspace.text workspace contains dots to generate the sources.  We no longer use the VMMakerTool since there should be nothing platform-specific in the generated sources (if we add ports to other ISAs all their source can be included and selected as required by the platform makefiles).
>>>
>>> Since the Cogit generates x86 machine code simulation is much more complex.  There is a support plugin, platforms/Cross/plugins/BochsIA32Plugin that depends on a large simulation of the x86 family implemented in C++ (see  processors/IA32/bochs) and on Alien.  I use the simulator frequently (but note that I haven't had time to build a working version for Squeak 4.1).  I have tested Cog simulation in this image, running on the image/VMMaker-Squeak4.1.image itself.  The VM Simulation Workspace in the VMMaker image contains an example doit that starts the simulator. Be patient, even on a fast machine unhibernating the Squeak display background image takes nearly a minute.  Native fonts do not (yet) simulate correctly, but the system runs.  But note that I have only attempted to build and run the simulator on Mac OS X.  I expect Bochs can be built on linux and win32 but I have not tried.  By the way, I've not described how to run the Bochs simulator on the current Squeak VM.

>>>
>>>
>>> Tarball:
>>>
>>> The top-level directories in the tarball are
>>>
>>>        src
>>>                the tree for the Cog generated sources including all plugins
>>>        stacksrc/vm
>>>                the directory containing the Stack VM source (plugins can be taken from above)
>>>        platforms
>>>                the usual svn platform tree but including Cog specific changes such as the heartbeat
>>>        processors
>>>                the tree containing simulation support code, i.e. the bochs C++ x86 simulation library, along with a potential ARM, PowerPC&  MIPS simulator, Skeye.
>>>
>>>        image
>>>                the Cog-prepared Squeak 4.1 VMMaker image
>>>        scripts
>>>                some svn scripts to revert unchanged plugins that haven't really changed
>>>
>>>        cygwinbuild
>>>                the win32 build directory
>>>        winbuild
>>>                the old win32 build directory for minnow gcc 2.95.  Not entirely obsolete as the cygwin build as yet fails to generate a functional FFIPlugin
>>>        macbuild
>>>                the CoreVM.xcodeproj and support build projects for Mac OS X 10.5 or better
>>>        unixbuild
>>>                the build directory for linux
>>>
>>>
>>> Building Cog:
>>>
>>> Each build directory above contains a HowToBuild file that describes building in more detail.  The build directories only contain Cogit makefiles.  f you want to build a Stack VM you're on your own but this is very close to the existing Squeak VM build.
>>>
>>>
>>> Status:
>>> The Cogit VM has been our sole VM at Teleplace for nearly a year.  We do occasionally find bugs and there are almost certainly areas of functionality that we have not touched (for example I know that co-routining does not yet work).  If you find a bug please try and create a reproducible test case and let me know.  I can't promise to take a look or fix it but I am motivated to do so and will try my best as time allows.  Better still if you find and fix bugs be sure to let me know.
>>>
>>> License (MIT):
>>> All contributions from Teleplace in this release are
>>> Copyright (c) 2010 Teleplace, Inc.
>>>
>>> Permission is hereby granted, free of charge, to any person obtaining a copy
>>> of this software and associated documentation files (the "Software"), to deal
>>> in the Software without restriction, including without limitation the rights
>>> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
>>> copies of the Software, and to permit persons to whom the Software is
>>> furnished to do so, subject to the following conditions:
>>>
>>> The above copyright notice and this permission notice shall be included in
>>> all copies or substantial portions of the Software.
>>>
>>> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>>> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>>> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
>>> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
>>> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
>>> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
>>> THE SOFTWARE.
>>>
>>> Eliot Miranda
>>> June 2010
>>>
>>>
>>
>>
>>
>
>
>

> Howdy!
>
> First: Super fun and cool! I am of course *very* happy to see Cog released.
>
> Now, over to some "testing"...
>
> SIDENOTE: First btw I ran pystone.py with regular Python 2.6.5 on my Lucid Lynx, then in the latest "regular" VM from Squeakvm.org. Result:
>
> Python: 36k pystones
> Squeak: 45k pystones
>
> So... the good ole VM is still a tad faster than CPython in that bench. :)
>
> Now, I wanted to try it out with Cogit. Trouble begins! :)
>
> I am using the tar ball on a Lucid laptop.
>
> 1. vm-sound-NAS does not compile! Lots of compile errors, probably due to a new upstream NAS. So try to get rid of that plugin... is harder than I thought! I finally ended up hacking the configure script to "fail" on the compile check by trying to compile rubbish. ;)
>
> 2. For some odd reason this will still create duplicate lines about NAS in disabledPlugins.c, just manually remove one of them, fine. Tada! Got a VM binary.
>
> 3. Fire it up on a *vanilla* Squeak4.1.1.image. BOOM, segfault. This is a "full debug VM" per instructions in HowToBuild. Anyway, see all info below, and tell me if there is more you want. :)
>
> Btw, is there some nice existing script to run to "collect data about the box" that does uname etc?
>
> regards, Göran
> ------------------
> gokr@yoda:~/squeak$ cat /proc/cpuinfo
> processor : 0
> vendor_id : GenuineIntel
> cpu family : 6
> model : 14
> model name : Genuine Intel(R) CPU           U2500  @ 1.20GHz
> stepping : 8
> cpu MHz : 800.000
> cache size : 2048 KB
> physical id : 0
> siblings : 2
> core id : 0
> cpu cores : 2
> apicid : 0
> initial apicid : 0
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 10
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc arch_perfmon bts aperfmperf pni monitor vmx est tm2 xtpr pdcm
> bogomips : 2393.82
> clflush size : 64
> cache_alignment : 64
> address sizes : 32 bits physical, 32 bits virtual
> power management:
>
> gokr@yoda:~/squeak$ gcc --version
> gcc (Ubuntu 4.4.3-4ubuntu5) 4.4.3
> Copyright (C) 2009 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>
> gokr@yoda:~/squeak$ uname -a
> Linux yoda 2.6.32-22-generic-pae #36-Ubuntu SMP Thu Jun 3 23:14:23 UTC 2010 i686 GNU/Linux
>
> gokr@yoda:~/squeak$ squeak -version
> 3.9-7 #1 Mon Jun 21 13:20:28 CEST 2010 gcc 4.4.3
> Croquet Closure Cog VM [CoInterpreter VMMaker-oscog.11]
> Linux yoda 2.6.32-22-generic-pae #36-Ubuntu SMP Thu Jun 3 23:14:23 UTC 2010 i686 GNU/Linux
> plugin path: /usr/local/lib/squeak/3.9-7/ [default: /usr/local/lib/squeak/3.9-7/]
>
> gokr@yoda:~/squeak$ squeak Squeak4.1.1.image
>
> ((rcvr & 1)) || (addressCouldBeObj(rcvr)) 11334
>
> Segmentation fault
>
>
>
> Smalltalk stack dump:
> 0xbfc87e08 M GradientFillStyle>scaledAlphaMix:of:with: 2018669100: a(n) GradientFillStyle
> 0xbfc87e5c M [] in GradientFillStyle>computePixelRampOfSize: 2018669100: a(n) GradientFillStyle
> 0xbfc87e7c M SortedCollection(OrderedCollection)>do: 2018669424: a(n) SortedCollection
> 0xbfc87eb4 I GradientFillStyle>computePixelRampOfSize: 2018669100: a(n) GradientFillStyle
> 0xbfc87ed8 I [] in GradientFillStyle class>initPixelRampCache 2007164144: a(n) GradientFillStyle class
> 0xbfc87f10 I LRUCache>at: 2012963616: a(n) LRUCache
> 0xbfc87f2c M GradientFillStyle>pixelRamp 2018529312: a(n) GradientFillStyle
> 0xbfc87f4c M BalloonEngine>registerFill: 2018659444: a(n) BalloonEngine
> 0xbfc87f74 M BalloonEngine>registerFills: 2018659444: a(n) BalloonEngine
> 0xbfc87f90 M BalloonEngine>registerFill:and: 2018659444: a(n) BalloonEngine
> 0xbfc87fb4 M BalloonEngine>drawRectangle:fill:borderWidth:borderColor:transform: 2018659444: a(n) BalloonEngine
> 0xbfc87fe8 M BalloonCanvas>drawRectangle:color:borderWidth:borderColor: 2018659252: a(n) BalloonCanvas
> 0xbfc88010 M BalloonCanvas>fillRectangle:fillStyle: 2018659252: a(n) BalloonCanvas
> 0xbfc88030 M FormCanvas>balloonFillRectangle:fillStyle: 2018611404: a(n) FormCanvas
> 0xbfc88054 M FormCanvas>fillRectangle:fillStyle: 2018611404: a(n) FormCanvas
> 0xbfc88074 M FormCanvas(Canvas)>fillRectangle:fillStyle:borderStyle: 2018611404: a(n) FormCanvas
> 0xbfc88098 M SystemWindow(Morph)>drawOn: 2014426088: a(n) SystemWindow
> 0xbfc880b4 M FormCanvas(Canvas)>draw: 2018611404: a(n) FormCanvas
> 0xbfc880d0 M FormCanvas(Canvas)>drawMorph: 2018611404: a(n) FormCanvas
> 0xbfc880f0 M [] in SystemWindow(Morph)>fullDrawOn: 2014426088: a(n) SystemWindow
> 0xbfc8810c M CornerRounder class>roundCornersOf:on:in:displayBlock:borderWidth:corners: 2007442196: a(n) CornerRounder class
> 0xbfc8813c M FormCanvas>roundCornersOf:in:during: 2018611404: a(n) FormCanvas
> 0xbfc88160 M FormCanvas(Canvas)>roundCornersOf:during: 2018611404: a(n) FormCanvas
> 0xbfc88180 M SystemWindow(Morph)>fullDrawOn: 2014426088: a(n) SystemWindow
> 0xbfc8819c M FormCanvas(Canvas)>fullDraw: 2018611404: a(n) FormCanvas
> 0xbfc881b8 M FormCanvas(Canvas)>fullDrawMorph: 2018611404: a(n) FormCanvas
> 0xbfc88208 M [] in WorldState>drawWorld:submorphs:invalidAreasOn: 2001318316: a(n) WorldState
> 0xbfc88240 I Rectangle>allAreasOutsideList:startingAt:do: 2017358104: a(n) Rectangle
> 0xbfc8826c I Rectangle>allAreasOutsideList:do: 2017358104: a(n) Rectangle
> 0xbfc882a8 M [] in WorldState>drawWorld:submorphs:invalidAreasOn: 2001318316: a(n) WorldState
> 0xbfc882cc M Array(SequenceableCollection)>do: 2018529764: a(n) Array
> 0xbfc882fc M WorldState>drawWorld:submorphs:invalidAreasOn: 2001318316: a(n) WorldState
> 0xbfc88334 M [] in WorldState>displayWorld:submorphs: 2001318316: a(n) WorldState
> 0xbfc8834c M FormCanvas>roundCornersOf:in:during: 2017358448: a(n) FormCanvas
> 0xbfc88370 M FormCanvas(Canvas)>roundCornersOf:during: 2017358448: a(n) FormCanvas
> 0xbfc88398 M WorldState>displayWorld:submorphs: 2001318316: a(n) WorldState
> 0xbfc883c0 I PasteUpMorph>privateOuterDisplayWorld 2001318568: a(n) PasteUpMorph
> 0xbfc883e0 I PasteUpMorph>displayWorld 2001318568: a(n) PasteUpMorph
> 0xbfc88404 I [] in WorldState>displayWorldSafely: 2001318316: a(n) WorldState
> 0xbfc88420 M BlockClosure>on:do: 2018529472: a(n) BlockClosure
> 0xbfc88440 M BlockClosure>ifError: 2018529472: a(n) BlockClosure
> 0xbfc88464 I WorldState>displayWorldSafely: 2001318316: a(n) WorldState
> 0xbfc88480 M PasteUpMorph>displayWorldSafely 2001318568: a(n) PasteUpMorph
> 0xbfc88498 M PasteUpMorph>install 2001318568: a(n) PasteUpMorph
> 0xbfc884c0 I AutoStart class>checkForPluginUpdate 2008299932: a(n) AutoStart class
> 0xbfc884e0 M AutoStart class>startUp: 2008299932: a(n) AutoStart class
> 0xbfc8850c M [] in SmalltalkImage>send:toClassesNamedIn:with: 2009624740: a(n) SmalltalkImage
> 0xbfc88534 I OrderedCollection>do: 2009661056: a(n) OrderedCollection
> 0xbfc8855c I SmalltalkImage>send:toClassesNamedIn:with: 2009624740: a(n) SmalltalkImage
> 0xbfc88588 I SmalltalkImage>processStartUpList: 2009624740: a(n) SmalltalkImage
> 0xbfc885b4 I SmalltalkImage>snapshot:andQuit:embedded: 2009624740: a(n) SmalltalkImage
> 2014606248 s SmalltalkImage>snapshot:andQuit:
> 2014606132 s TheWorldMainDockingBar>saveAndQuitSqueak
> 2014606040 s [] in MenuItemMorph>invokeWithEvent:
> 2014605924 s BlockClosure>ensure:
> 2014605832 s CursorWithMask(Cursor)>showWhile:
> 2014605632 s MenuItemMorph>invokeWithEvent:
> 2014605540 s MenuItemMorph>mouseUp:
> 2014605448 s MenuItemMorph>handleMouseUp:
> 2014605316 s MouseButtonEvent>sentTo:
> 2014605224 s MenuItemMorph(Morph)>handleEvent:
> 2014605132 s MorphicEventDispatcher>dispatchDefault:with:
> 2014605040 s MorphicEventDispatcher>dispatchEvent:with:
> 2014604948 s MenuItemMorph(Morph)>processEvent:using:
> 2014604856 s MorphicEventDispatcher>dispatchDefault:with:
> 2014604748 s MorphicEventDispatcher>dispatchEvent:with:
> 2014604616 s DockingBarMenuMorph(Morph)>processEvent:using:
> 2014604524 s DockingBarMenuMorph(Morph)>processEvent:
> 2014604432 s DockingBarMenuMorph(MenuMorph)>handleFocusEvent:
> 2014604340 s [] in HandMorph>sendFocusEvent:to:clear:
> 2014604248 s [] in PasteUpMorph>becomeActiveDuring:
> 2014604068 s BlockClosure>on:do:
> 2014603976 s PasteUpMorph>becomeActiveDuring:
> 2014603856 s HandMorph>sendFocusEvent:to:clear:
> 2014603764 s HandMorph>sendEvent:focus:clear:
> 2014603672 s HandMorph>sendMouseEvent:
> 2014603528 s HandMorph>handleEvent:
> 2014603180 s HandMorph>processEvents
> 2014603064 s [] in WorldState>doOneCycleNowFor:
> 2014602972 s Array(SequenceableCollection)>do:
> 2014602872 s WorldState>handsDo:
> 2014602780 s WorldState>doOneCycleNowFor:
> 2014602688 s WorldState>doOneCycleFor:
> 2014602596 s PasteUpMorph>doOneCycle
> 2010011832 s [] in Project class>spawnNewProcess
> 2010011700 s [] in BlockClosure>newProcess
>
> Most recent primitives
> basicNew
> copyBits
> @
> @
> @
> basicNew
> @
> @
> basicNew
> @
> @
> @
> basicNew
> copyBits
> @
> @
> @
> basicNew
> @
> copyBits
> @
> @
> @
> basicNew
> basicNew:
> at:put:
> @
> copyBits
> @
> @
> @
> basicNew
> @
> @
> @
> basicNew
> shallowCopy
> new:
> @
> @
> new:
> at:put:
> at:put:
> at:put:
> at:put:
> @
> @
> @
> basicNew
> @
> @
> basicNew
> basicNew:
> basicNew
> @
> @
> basicNew
> copyBits
> @
> @
> basicNew
> @
> @
> @
> basicNew
> basicNew:
> at:put:
> at:put:
> @
> basicNew
> copyBits
> at:put:
> @
> @
> @
> basicNew
> @
> @
> basicNew
> basicNew:
> basicNew
> @
> @
> basicNew
> copyBits
> @
> @
> basicNew
> @
> @
> @
> basicNew
> basicNew:
> at:put:
> at:put:
> @
> basicNew
> copyBits
> at:put:
> @
> @
> @
> @
> basicNew@
> @
> basicNew
> basicNew:
> basicNew
> @
> @
> basicNew
> copyBits
> @
> @
> basicNew
> @
> @
> @
> basicNew
> basicNew:
> at:put:
> at:put:
> @
> basicNew
> copyBits
> at:put:
> @
> @
> @
> basicNew
> @
> @
> basicNew
> basicNew:
> basicNew
> @
> @
> basicNew
> copyBits
> @
> @
> basicNew
> @
> @
> @
> basicNew
> basicNew:
> at:put:
> at:put:
> @
> basicNew
> copyBits
> at:put:
> @
> perform:with:
> @
> @
> perform:with:
> @
> basicNew
> basicNew
> @
> @
> @
> basicNew
> basicNew
> basicNew
> basicNew
> new:
> basicNew:
> basicNew
> primitiveSetBitBltPlugin:
> @
> @
> basicNew
> @
> @
> basicNew
> @
> @
> basicNew
> @
> primitiveSetBitBltPlugin:
> @
> @
> basicNew
> @
> @
> basicNew
> @
> @
> basicNew
> @
> @
> wait
> at:put:
> signal
> primInitializeBuffer:
> primSetAALevel:
> primSetOffset:
> primSetClipRect:
> primSetEdgeTransform:
> primSetColorTransform:
> primSetEdgeTransform:
> primSetColorTransform:
> primGetDepth
> primSetDepth:
> new:
> at:put:
> at:put:
> basicNew:
> species
> stringHash:initialHash:
> fractionPart
> truncated
> fractionPart
> fractionPart
> truncated
> basicNew
> basicNew
> new:
> value:
> at:put:
> value:
> at:put:
> at:put:
> value:value:
> value:value:
> basicNew:
> basicNew:
> at:put:
> at:put:
> at:put:
> at:put:
> fractionPart
> truncated
> basicNew:
> at:put:
> at:put:
> at:put:
> at:put:
> fractionPart
> truncated
> basicNew:
> at:put:
> at:put:
> at:put:
> at:put:
> truncated
> truncated
> truncated
> truncated
> at:put:
> perform:with:
> truncated
> Aborted
> gokr@yoda:~/squeak$
>
>

...

>  
>
> Cheers,
> Henry
>
> On Jun 21, 2010, at 1:39 51PM, Göran Krampe wrote:
>
> > Howdy!
> >
> > First: Super fun and cool! I am of course *very* happy to see Cog released.
> >
> > Now, over to some "testing"...
> >
> > SIDENOTE: First btw I ran pystone.py with regular Python 2.6.5 on my Lucid Lynx, then in the latest "regular" VM from Squeakvm.org. Result:
> >
> > Python: 36k pystones
> > Squeak: 45k pystones
> >
> > So... the good ole VM is still a tad faster than CPython in that bench. :)
> >
> > Now, I wanted to try it out with Cogit. Trouble begins! :)
> >
> > I am using the tar ball on a Lucid laptop.
> >
> > 1. vm-sound-NAS does not compile! Lots of compile errors, probably due to a new upstream NAS. So try to get rid of that plugin... is harder than I thought! I finally ended up hacking the configure script to "fail" on the compile check by trying to compile rubbish. ;)
> >
> > 2. For some odd reason this will still create duplicate lines about NAS in disabledPlugins.c, just manually remove one of them, fine. Tada! Got a VM binary.
> >
> > 3. Fire it up on a *vanilla* Squeak4.1.1.image. BOOM, segfault. This is a "full debug VM" per instructions in HowToBuild. Anyway, see all info below, and tell me if there is more you want. :)
> >
> > Btw, is there some nice existing script to run to "collect data about the box" that does uname etc?
> >
> > regards, Göran
> > ------------------
> > gokr@yoda:~/squeak$ cat /proc/cpuinfo
> > processor     : 0
> > vendor_id     : GenuineIntel
> > cpu family    : 6
> > model         : 14
> > model name    : Genuine Intel(R) CPU           U2500  @ 1.20GHz
> > stepping      : 8
> > cpu MHz               : 800.000
> > cache size    : 2048 KB
> > physical id   : 0
> > siblings      : 2
> > core id               : 0
> > cpu cores     : 2
> > apicid                : 0
> > initial apicid        : 0
> > fdiv_bug      : no
> > hlt_bug               : no
> > f00f_bug      : no
> > coma_bug      : no
> > fpu           : yes
> > fpu_exception : yes
> > cpuid level   : 10
> > wp            : yes
> > flags         : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc arch_perfmon bts aperfmperf pni monitor vmx est tm2 xtpr pdcm
> > bogomips      : 2393.82
> > clflush size  : 64
> > cache_alignment       : 64
> > address sizes : 32 bits physical, 32 bits virtual
> > power management:
> >
> > gokr@yoda:~/squeak$ gcc --version
> > gcc (Ubuntu 4.4.3-4ubuntu5) 4.4.3
> > Copyright (C) 2009 Free Software Foundation, Inc.
> > This is free software; see the source for copying conditions.  There is NO
> > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> >
> > gokr@yoda:~/squeak$ uname -a
> > Linux yoda 2.6.32-22-generic-pae #36-Ubuntu SMP Thu Jun 3 23:14:23 UTC 2010 i686 GNU/Linux
> >
> > gokr@yoda:~/squeak$ squeak -version
> > 3.9-7 #1 Mon Jun 21 13:20:28 CEST 2010 gcc 4.4.3
> > Croquet Closure Cog VM [CoInterpreter VMMaker-oscog.11]
> > Linux yoda 2.6.32-22-generic-pae #36-Ubuntu SMP Thu Jun 3 23:14:23 UTC 2010 i686 GNU/Linux
> > plugin path: /usr/local/lib/squeak/3.9-7/ [default: /usr/local/lib/squeak/3.9-7/]
> >
> > gokr@yoda:~/squeak$ squeak Squeak4.1.1.image
> >
> > ((rcvr & 1)) || (addressCouldBeObj(rcvr)) 11334
> >
> > Segmentation fault
> >
> >
> >
> > Smalltalk stack dump:
> > 0xbfc87e08 M GradientFillStyle>scaledAlphaMix:of:with: 2018669100: a(n) GradientFillStyle
> > 0xbfc87e5c M [] in GradientFillStyle>computePixelRampOfSize: 2018669100: a(n) GradientFillStyle
> > 0xbfc87e7c M SortedCollection(OrderedCollection)>do: 2018669424: a(n) SortedCollection
> > 0xbfc87eb4 I GradientFillStyle>computePixelRampOfSize: 2018669100: a(n) GradientFillStyle
> > 0xbfc87ed8 I [] in GradientFillStyle class>initPixelRampCache 2007164144: a(n) GradientFillStyle class
> > 0xbfc87f10 I LRUCache>at: 2012963616: a(n) LRUCache
> > 0xbfc87f2c M GradientFillStyle>pixelRamp 2018529312: a(n) GradientFillStyle
> > 0xbfc87f4c M BalloonEngine>registerFill: 2018659444: a(n) BalloonEngine
> > 0xbfc87f74 M BalloonEngine>registerFills: 2018659444: a(n) BalloonEngine
> > 0xbfc87f90 M BalloonEngine>registerFill:and: 2018659444: a(n) BalloonEngine
> > 0xbfc87fb4 M BalloonEngine>drawRectangle:fill:borderWidth:borderColor:transform: 2018659444: a(n) BalloonEngine
> > 0xbfc87fe8 M BalloonCanvas>drawRectangle:color:borderWidth:borderColor: 2018659252: a(n) BalloonCanvas
> > 0xbfc88010 M BalloonCanvas>fillRectangle:fillStyle: 2018659252: a(n) BalloonCanvas
> > 0xbfc88030 M FormCanvas>balloonFillRectangle:fillStyle: 2018611404: a(n) FormCanvas
> > 0xbfc88054 M FormCanvas>fillRectangle:fillStyle: 2018611404: a(n) FormCanvas
> > 0xbfc88074 M FormCanvas(Canvas)>fillRectangle:fillStyle:borderStyle: 2018611404: a(n) FormCanvas
> > 0xbfc88098 M SystemWindow(Morph)>drawOn: 2014426088: a(n) SystemWindow
> > 0xbfc880b4 M FormCanvas(Canvas)>draw: 2018611404: a(n) FormCanvas
> > 0xbfc880d0 M FormCanvas(Canvas)>drawMorph: 2018611404: a(n) FormCanvas
> > 0xbfc880f0 M [] in SystemWindow(Morph)>fullDrawOn: 2014426088: a(n) SystemWindow
> > 0xbfc8810c M CornerRounder class>roundCornersOf:on:in:displayBlock:borderWidth:corners: 2007442196: a(n) CornerRounder class
> > 0xbfc8813c M FormCanvas>roundCornersOf:in:during: 2018611404: a(n) FormCanvas
> > 0xbfc88160 M FormCanvas(Canvas)>roundCornersOf:during: 2018611404: a(n) FormCanvas
> > 0xbfc88180 M SystemWindow(Morph)>fullDrawOn: 2014426088: a(n) SystemWindow
> > 0xbfc8819c M FormCanvas(Canvas)>fullDraw: 2018611404: a(n) FormCanvas
> > 0xbfc881b8 M FormCanvas(Canvas)>fullDrawMorph: 2018611404: a(n) FormCanvas
> > 0xbfc88208 M [] in WorldState>drawWorld:submorphs:invalidAreasOn: 2001318316: a(n) WorldState
> > 0xbfc88240 I Rectangle>allAreasOutsideList:startingAt:do: 2017358104: a(n) Rectangle
> > 0xbfc8826c I Rectangle>allAreasOutsideList:do: 2017358104: a(n) Rectangle
> > 0xbfc882a8 M [] in WorldState>drawWorld:submorphs:invalidAreasOn: 2001318316: a(n) WorldState
> > 0xbfc882cc M Array(SequenceableCollection)>do: 2018529764: a(n) Array
> > 0xbfc882fc M WorldState>drawWorld:submorphs:invalidAreasOn: 2001318316: a(n) WorldState
> > 0xbfc88334 M [] in WorldState>displayWorld:submorphs: 2001318316: a(n) WorldState
> > 0xbfc8834c M FormCanvas>roundCornersOf:in:during: 2017358448: a(n) FormCanvas
> > 0xbfc88370 M FormCanvas(Canvas)>roundCornersOf:during: 2017358448: a(n) FormCanvas
> > 0xbfc88398 M WorldState>displayWorld:submorphs: 2001318316: a(n) WorldState
> > 0xbfc883c0 I PasteUpMorph>privateOuterDisplayWorld 2001318568: a(n) PasteUpMorph
> > 0xbfc883e0 I PasteUpMorph>displayWorld 2001318568: a(n) PasteUpMorph
> > 0xbfc88404 I [] in WorldState>displayWorldSafely: 2001318316: a(n) WorldState
> > 0xbfc88420 M BlockClosure>on:do: 2018529472: a(n) BlockClosure
> > 0xbfc88440 M BlockClosure>ifError: 2018529472: a(n) BlockClosure
> > 0xbfc88464 I WorldState>displayWorldSafely: 2001318316: a(n) WorldState
> > 0xbfc88480 M PasteUpMorph>displayWorldSafely 2001318568: a(n) PasteUpMorph
> > 0xbfc88498 M PasteUpMorph>install 2001318568: a(n) PasteUpMorph
> > 0xbfc884c0 I AutoStart class>checkForPluginUpdate 2008299932: a(n) AutoStart class
> > 0xbfc884e0 M AutoStart class>startUp: 2008299932: a(n) AutoStart class
> > 0xbfc8850c M [] in SmalltalkImage>send:toClassesNamedIn:with: 2009624740: a(n) SmalltalkImage
> > 0xbfc88534 I OrderedCollection>do: 2009661056: a(n) OrderedCollection
> > 0xbfc8855c I SmalltalkImage>send:toClassesNamedIn:with: 2009624740: a(n) SmalltalkImage
> > 0xbfc88588 I SmalltalkImage>processStartUpList: 2009624740: a(n) SmalltalkImage
> > 0xbfc885b4 I SmalltalkImage>snapshot:andQuit:embedded: 2009624740: a(n) SmalltalkImage
> > 2014606248 s SmalltalkImage>snapshot:andQuit:
> > 2014606132 s TheWorldMainDockingBar>saveAndQuitSqueak
> > 2014606040 s [] in MenuItemMorph>invokeWithEvent:
> > 2014605924 s BlockClosure>ensure:
> > 2014605832 s CursorWithMask(Cursor)>showWhile:
> > 2014605632 s MenuItemMorph>invokeWithEvent:
> > 2014605540 s MenuItemMorph>mouseUp:
> > 2014605448 s MenuItemMorph>handleMouseUp:
> > 2014605316 s MouseButtonEvent>sentTo:
> > 2014605224 s MenuItemMorph(Morph)>handleEvent:
> > 2014605132 s MorphicEventDispatcher>dispatchDefault:with:
> > 2014605040 s MorphicEventDispatcher>dispatchEvent:with:
> > 2014604948 s MenuItemMorph(Morph)>processEvent:using:
> > 2014604856 s MorphicEventDispatcher>dispatchDefault:with:
> > 2014604748 s MorphicEventDispatcher>dispatchEvent:with:
> > 2014604616 s DockingBarMenuMorph(Morph)>processEvent:using:
> > 2014604524 s DockingBarMenuMorph(Morph)>processEvent:
> > 2014604432 s DockingBarMenuMorph(MenuMorph)>handleFocusEvent:
> > 2014604340 s [] in HandMorph>sendFocusEvent:to:clear:
> > 2014604248 s [] in PasteUpMorph>becomeActiveDuring:
> > 2014604068 s BlockClosure>on:do:
> > 2014603976 s PasteUpMorph>becomeActiveDuring:
> > 2014603856 s HandMorph>sendFocusEvent:to:clear:
> > 2014603764 s HandMorph>sendEvent:focus:clear:
> > 2014603672 s HandMorph>sendMouseEvent:
> > 2014603528 s HandMorph>handleEvent:
> > 2014603180 s HandMorph>processEvents
> > 2014603064 s [] in WorldState>doOneCycleNowFor:
> > 2014602972 s Array(SequenceableCollection)>do:
> > 2014602872 s WorldState>handsDo:
> > 2014602780 s WorldState>doOneCycleNowFor:
> > 2014602688 s WorldState>doOneCycleFor:
> > 2014602596 s PasteUpMorph>doOneCycle
> > 2010011832 s [] in Project class>spawnNewProcess
> > 2010011700 s [] in BlockClosure>newProcess
> >
> > Most recent primitives
> > basicNew
> > copyBits
> > @
> > @
> > @
> > basicNew
> > @
> > @
> > basicNew
> > @
> > @
> > @
> > basicNew
> > copyBits
> > @
> > @
> > @
> > basicNew
> > @
> > copyBits
> > @
> > @
> > @
> > basicNew
> > basicNew:
> > at:put:
> > @
> > copyBits
> > @
> > @
> > @
> > basicNew
> > @
> > @
> > @
> > basicNew
> > shallowCopy
> > new:
> > @
> > @
> > new:
> > at:put:
> > at:put:
> > at:put:
> > at:put:
> > @
> > @
> > @
> > basicNew
> > @
> > @
> > basicNew
> > basicNew:
> > basicNew
> > @
> > @
> > basicNew
> > copyBits
> > @
> > @
> > basicNew
> > @
> > @
> > @
> > basicNew
> > basicNew:
> > at:put:
> > at:put:
> > @
> > basicNew
> > copyBits
> > at:put:
> > @
> > @
> > @
> > basicNew
> > @
> > @
> > basicNew
> > basicNew:
> > basicNew
> > @
> > @
> > basicNew
> > copyBits
> > @
> > @
> > basicNew
> > @
> > @
> > @
> > basicNew
> > basicNew:
> > at:put:
> > at:put:
> > @
> > basicNew
> > copyBits
> > at:put:
> > @
> > @
> > @
> > @
> > basicNew@
> > @
> > basicNew
> > basicNew:
> > basicNew
> > @
> > @
> > basicNew
> > copyBits
> > @
> > @
> > basicNew
> > @
> > @
> > @
> > basicNew
> > basicNew:
> > at:put:
> > at:put:
> > @
> > basicNew
> > copyBits
> > at:put:
> > @
> > @
> > @
> > basicNew
> > @
> > @
> > basicNew
> > basicNew:
> > basicNew
> > @
> > @
> > basicNew
> > copyBits
> > @
> > @
> > basicNew
> > @
> > @
> > @
> > basicNew
> > basicNew:
> > at:put:
> > at:put:
> > @
> > basicNew
> > copyBits
> > at:put:
> > @
> > perform:with:
> > @
> > @
> > perform:with:
> > @
> > basicNew
> > basicNew
> > @
> > @
> > @
> > basicNew
> > basicNew
> > basicNew
> > basicNew
> > new:
> > basicNew:
> > basicNew
> > primitiveSetBitBltPlugin:
> > @
> > @
> > basicNew
> > @
> > @
> > basicNew
> > @
> > @
> > basicNew
> > @
> > primitiveSetBitBltPlugin:
> > @
> > @
> > basicNew
> > @
> > @
> > basicNew
> > @
> > @
> > basicNew
> > @
> > @
> > wait
> > at:put:
> > signal
> > primInitializeBuffer:
> > primSetAALevel:
> > primSetOffset:
> > primSetClipRect:
> > primSetEdgeTransform:
> > primSetColorTransform:
> > primSetEdgeTransform:
> > primSetColorTransform:
> > primGetDepth
> > primSetDepth:
> > new:
> > at:put:
> > at:put:
> > basicNew:
> > species
> > stringHash:initialHash:
> > fractionPart
> > truncated
> > fractionPart
> > fractionPart
> > truncated
> > basicNew
> > basicNew
> > new:
> > value:
> > at:put:
> > value:
> > at:put:
> > at:put:
> > value:value:
> > value:value:
> > basicNew:
> > basicNew:
> > at:put:
> > at:put:
> > at:put:
> > at:put:
> > fractionPart
> > truncated
> > basicNew:
> > at:put:
> > at:put:
> > at:put:
> > at:put:
> > fractionPart
> > truncated
> > basicNew:
> > at:put:
> > at:put:
> > at:put:
> > at:put:
> > truncated
> > truncated
> > truncated
> > truncated
> > at:put:
> > perform:with:
> > truncated
> > Aborted
> > gokr@yoda:~/squeak$
> >
> >
>
>