Mariano,
Mariano Peck wrote:
The fork of the adroid VM is from the Interpreter VM, isn't it ?
Yes, as much as I can tell.
Have you ever consider or have in mind to adapt the Cog StackVM ? I remember John saying that this improved performance in the iPhone.
This might be a direction for future work. But not a small thing, I expect.
BTW as you are (I suppose) looking closely at Cog internals, do you see where the event loop is, and how to replace it with an external queue handler?
Just curiosity...apart from changing the interpreter loop, does this VM require more changes in the "VMMaker part" ? because I guess most of the fork is in the platform code.
Since I haven't seen the Slang sources (I have no idea where they are) of the Event VM, I cannot tell much.
Thanks.
On 2011-04-19, at 6:37 PM, Dimitry Golubovsky wrote:
Mariano,
Mariano Peck wrote:
The fork of the adroid VM is from the Interpreter VM, isn't it ?
Yes, as much as I can tell.
Have you ever consider or have in mind to adapt the Cog StackVM ? I remember John saying that this improved performance in the iPhone.
This might be a direction for future work. But not a small thing, I expect.
It was a matter of just doing the compile with the cog stack vm, no change to the platform code.
-- =========================================================================== John M. McIntosh johnmci@smalltalkconsulting.com Twitter: squeaker68882 Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com ===========================================================================
On 4/20/2011 0:37, Dimitry Golubovsky wrote:
Since I haven't seen the Slang sources (I have no idea where they are) of the Event VM, I cannot tell much.
They are right here:
http://squeakvm.org/win32/experimental/androidvm.zip
Cheers, - Andreas
On Wed, Apr 20, 2011 at 8:16 AM, Andreas Raab andreas.raab@gmx.de wrote:
On 4/20/2011 0:37, Dimitry Golubovsky wrote:
Since I haven't seen the Slang sources (I have no idea where they are) of the Event VM, I cannot tell much.
They are right here:
But where is VMMaker? I mean...the mcz or something from VMMaker so that you can recreate the C sources ?
Cheers,
- Andreas
On Sun, Apr 24, 2011 at 11:08:31PM +0200, Mariano Martinez Peck wrote:
On Wed, Apr 20, 2011 at 8:16 AM, Andreas Raab andreas.raab@gmx.de wrote:
On 4/20/2011 0:37, Dimitry Golubovsky wrote:
Since I haven't seen the Slang sources (I have no idea where they are) of the Event VM, I cannot tell much.
They are right here:
But where is VMMaker? I mean...the mcz or something from VMMaker so that you can recreate the C sources ?
I am not an Android developer, but I think I can point you to the answer.
Andreas gives an overview of the the VM works on the Google source project http://code.google.com/p/squeak-android-vm/.
If you unpack the sources (androidvm.zip) you will find an Eclipse project with some Java glue code for integrating the VM into the Android environment, and bunch of C code in the project/jni folder. This includes the interp.c file generated from VMMaker, which has this identification at the top of the file:
/* Automatically generated from Squeak on 17 January 2010 5:57:19 pm by VMMaker 3.11.8 */
The "VMMaker 3.11.8" tag gives an approximate idea of the VMMaker version, and if you look through the VMMaker archives on SqueakSource, you can see that this would have come from a VMMaker based on this version:
Name: VMMaker-dtl.147 Time: 1 November 2009, 10:41:36 pm Ancestors: VMMaker-dtl.146
VMMaker 3.11.8 Reference Mantis 7407: BitBlt. Incorrect alpha values for several rules. Add VMMaker-BitBlt-AlphaFixes-jmv-M7407.cs bitblt alpha fixes by Juan Vuletich
So you can reasonably conclude that Andreas was using a standard VMMaker from this time period, possibly with some local changes but basically a generic VMMaker.
As for the local changes, I would expect that they are the changes that Andreas posted here: http://lists.squeakfoundation.org/pipermail/vm-dev/2009-November/003437.html
So the fileout would be this attachment: http://lists.squeakfoundation.org/pipermail/vm-dev/attachments/20091113/970e...
Andreas' posting here has the relevant links: http://lists.squeakfoundation.org/pipermail/vm-dev/2011-April/007510.html
So in conclusion, the VMMaker for the Android VM is "hiding" right where it has always been, in SqS/VMMaker :)
I cannot say for certain, but my expectation is that you could use any version of VMMaker that you want (including the oscog branch) as long as you generate an interpreter with no Intel dependencies. So if you wanted to apply the event VM changes to a StackInterpreter, I can think of no reason that this would not work also.
HTH, Dave
On 25.04.2011, at 13:13, David T. Lewis wrote:
On Sun, Apr 24, 2011 at 11:08:31PM +0200, Mariano Martinez Peck wrote:
On Wed, Apr 20, 2011 at 8:16 AM, Andreas Raab andreas.raab@gmx.de wrote:
On 4/20/2011 0:37, Dimitry Golubovsky wrote:
Since I haven't seen the Slang sources (I have no idea where they are) of the Event VM, I cannot tell much.
They are right here:
But where is VMMaker? I mean...the mcz or something from VMMaker so that you can recreate the C sources ?
I am not an Android developer, but I think I can point you to the answer.
Andreas gives an overview of the the VM works on the Google source project http://code.google.com/p/squeak-android-vm/.
If you unpack the sources (androidvm.zip) you will find an Eclipse project with some Java glue code for integrating the VM into the Android environment, and bunch of C code in the project/jni folder. This includes the interp.c file generated from VMMaker, which has this identification at the top of the file:
/* Automatically generated from Squeak on 17 January 2010 5:57:19 pm by VMMaker 3.11.8 */
The "VMMaker 3.11.8" tag gives an approximate idea of the VMMaker version, and if you look through the VMMaker archives on SqueakSource, you can see that this would have come from a VMMaker based on this version:
Name: VMMaker-dtl.147 Time: 1 November 2009, 10:41:36 pm Ancestors: VMMaker-dtl.146
VMMaker 3.11.8 Reference Mantis 7407: BitBlt. Incorrect alpha values for several rules. Add VMMaker-BitBlt-AlphaFixes-jmv-M7407.cs bitblt alpha fixes by Juan Vuletich
So you can reasonably conclude that Andreas was using a standard VMMaker from this time period, possibly with some local changes but basically a generic VMMaker.
As for the local changes, I would expect that they are the changes that Andreas posted here: http://lists.squeakfoundation.org/pipermail/vm-dev/2009-November/003437.html
So the fileout would be this attachment: http://lists.squeakfoundation.org/pipermail/vm-dev/attachments/20091113/970e...
Andreas' posting here has the relevant links: http://lists.squeakfoundation.org/pipermail/vm-dev/2011-April/007510.html
So in conclusion, the VMMaker for the Android VM is "hiding" right where it has always been, in SqS/VMMaker :)
I cannot say for certain, but my expectation is that you could use any version of VMMaker that you want (including the oscog branch) as long as you generate an interpreter with no Intel dependencies. So if you wanted to apply the event VM changes to a StackInterpreter, I can think of no reason that this would not work also.
HTH, Dave
... the point being that the generated sources are *identical* across platforms. Only the platform support code differs, all platforms share the same "VM".
- Bert -
On Wed, Apr 20, 2011 at 12:37 AM, Dimitry Golubovsky golubovsky@gmail.comwrote:
Mariano,
Mariano Peck wrote:
The fork of the adroid VM is from the Interpreter VM, isn't it ?
Yes, as much as I can tell.
Have you ever consider or have in mind to adapt the Cog StackVM ? I remember John saying that this improved performance in the iPhone.
This might be a direction for future work. But not a small thing, I expect.
BTW as you are (I suppose) looking closely at Cog internals, do you see where the event loop is, and how to replace it with an external queue handler?
I know where it is, but I have no idea how to replace it. The loop is in the metho #interpret. For Cog is in StackInterpreter >> interpret
Just curiosity...apart from changing the interpreter loop, does this VM require more changes in the "VMMaker part" ? because I guess most of the fork is in the platform code.
Since I haven't seen the Slang sources (I have no idea where they are) of the Event VM, I cannot tell much.
It's a pity if we cannot get the VMMaker :(
Thanks.
-- Dimitry Golubovsky
Anywhere on the Web
vm-dev@lists.squeakfoundation.org
-
Andreas Raab -
Bert Freudenberg -
David T. Lewis -
Dimitry Golubovsky -
John M McIntosh -
Mariano Martinez Peck