[squeak-dev] Re: [Vm-dev] OSProcess in CogEliot Miranda eliot.miranda at gmail.comMon Jul 26 18:21:10 UTC 2010
Hi David, On Mon, Jul 26, 2010 at 7:13 AM, David T. Lewis <lewis at mail.msen.com> wrote: > On Sun, Jul 25, 2010 at 11:01:12PM -0400, Rob Withers wrote: > > > > -------------------------------------------------- > > From: "David T. Lewis" <lewis at mail.msen.com> > > Sent: Sunday, July 25, 2010 3:01 PM > > To: "The general-purpose Squeak developers list" > > <squeak-dev at lists.squeakfoundation.org> > > Cc: "Squeak Virtual Machine Development Discussion" > > <vm-dev at lists.squeakfoundation.org> > > Subject: Re: [squeak-dev] Re: [Vm-dev] OSProcess in Cog > > > > > > > >On Sun, Jul 25, 2010 at 12:24:33PM -0400, Rob Withers wrote: > > >> > > >>-------------------------------------------------- > > >>From: "David T. Lewis" <lewis at mail.msen.com> > > >>Sent: Sunday, July 25, 2010 11:58 AM > > >>To: "Squeak Virtual Machine Development Discussion" > > >><vm-dev at lists.squeakfoundation.org> > > >>Cc: "Squeak Dev" <squeak-dev at lists.squeakfoundation.org> > > >>Subject: Re: [Vm-dev] OSProcess in Cog > > >> > > >>> > > >>>On Sun, Jul 25, 2010 at 10:59:04AM -0400, Rob Withers wrote: > > >>>> > > >>>>I am trying to load and run OSProcess in Cog. I loaded: > > >>>> > > >>>> OSProcess-Base > > >>>> OSProcess-AIO > > >>>> OSProcess-Win32 > > >>>> OSProcess-Unix > > >>>> OSProcess-Tests > > >>>> > > >>>>Then ran the tests. Many failures. > > >>>> > > >>>>I looked at the vm and there is no ProcessPlugin or OSProcessPlugin. > > >>>>Should there be? > > >>> > > >>>OSProcess will not work without the OSProcessPlugin. AFAIK no one has > > >>>tried this yet (including me - sorry I've been quite busy lately). > > >>> > > >> > > >>What about the AIOPlugin? > > > > > >AIOPlugin is Unix only, and totally optional. OSProcess and CommandShell > > >will both work without it. > > > > > > > I see. I am including in hopes that I get the cross-platform thing > working > > for unix. > > > > >>>>What should I do? > > >>> > > >>>If you are compiling your own COG VM, then load OSProcessPlugin from > > >>>SqueakSource and give it a try. But just to set expectations, I will > > >>>be (pleasantly) surprised if it works the first time without > > >>>modifications, > > >>>so consider it pre-alpha at this point. > > >> > > >>I loaded the OSProcessPlugin package and generated sources under > Windows. > > >>I built using Cygwin. It gave me a Win32OSProcessPlugin.dll. > > >> > > >>I ran the tests. It said I don't have the AIOPlugin so it was using > > >>polling (I think that is what it said). Tests failed in > > >>AioEventHandlerTestCase (failures) and OSPipeTestCase (errors). Many > > >>OSPipeTestCase failures have to do with AttachableFileStream being > > >>closed. > > >> > > >>I tried the following code and it failed because stdout was closed: > > >> > > >>ThisOSProcess thisOSProcess openConsole. > > >>ThisOSProcess thisOSProcess stdOut > > >>nextPutAll: ('error count: ', > > >>CryptoDESTest suite run errorCount asString); > > >>flush. > > >> > > >>Which is what I need OSProcess for. > > > > > >On Windows, you will need to do one hack in order for this to work. > > >In the platforms sources, edit platforms/win32/vm/sqWin32HandleTable.h > > >and disable the handle registry checking. IIRC, you can just hack > > >the IsHandleInTable() function to always return true. > > > > > > > I did this, recompiled, launched Cog with my test image, and I am still > > getting the same failures and errors. > > > > >>Another issue: I am trying to generate sources so I can move them from > > >>Win32 to Unix and compile the vm there. I cannot run VMMaker on linux > - > > >>it > > >>is headless/no X. I noticed that the OSProcessPlugin generates per > > >>platform, and in fact there is platform support code. So under > Windows, > > >>we > > >>generate a Win32OSProcessPlugin. Under Unix I assume it generates a > > >>UnixOSProcessPlugin. Is there any way I can generate a > > >>UnixOSProcessPlugin > > >>under Windows? > > > > > >Open your VMMaker window in Squeak, click the "Find platform" button, > > >and change from "Win32" to "unix". Generate your sources, and you > > >should have the Unix variant of OSProcessPlugin rather than the Windows > > >flavor. > > > > > > > First thing is Cog doesn't use the window, it uses this script: > > > > (VMMaker > > generate: CoInterpreter > > to: (FileDirectory default / '..\src') fullName > > platformDir: (FileDirectory default / '..\platforms') > > fullName > > excluding:#(BrokenPlugin IA32ABIPluginSimulator > > SlangTestPlugin TestOSAPlugin)) > > > > Second, I tried using the window, changes the intepreterClass to > > 'CoInterpreter', set the platform path, set the sources path, and clicked > > "Find platform" and selected "unix". This did not change the text entry > > value. > > > > Third, I set self halts in UnixOSProcessPlugin class>>#shouldBeTranslated > > and Win32OSProcessPlugin class>>#shouldBeTranslated. The unix side > > eventually calls: > > > > UnixOSProcessPlugin class>>#isResponsibleForThisPlatform > > "Answer true is this is an instance of the class which is > > responsible for representing > > the OS process for the Squeak VM running on the current platform. A > > false answer is > > usually the result of running the image on a different platform and > > VM. > > Note: Keep this method is sync with OSProcess>>isUnix." > > > > | numericOsVersion | > > > > ^ (self platformName = 'unix') or: > > [numericOsVersion := self osVersion asInteger ifNil: [0]. > > (self platformName = 'Mac OS') and: [numericOsVersion >= > > 1000]] > > > > and this calls: > > > > OSProcessPlugin class>>#platformName > > "After Squeak version 3.6, #platformName was moved to > SmalltalkImage > > " > > > > ^ ((Smalltalk classNamed: 'SmalltalkImage') > > ifNil: [^ Smalltalk platformName]) current platformName > > > > which kills any hope of being a cross-compiled source. > > No worries there. The C source is not supposed to be cross-compiled. The > implementations in Slang/Smalltalk are completely different for Unix and > Windows, and the resulting generated code (UnixOSProcessPlugin.c and > Win32OSProcessPlugin.c respectively) are completely different as well. > When building a VM to run on Unix/Linux/OSX you would be compiling the > UnixOSProcessPlugin.c, and when compiling a VM for Windows you would > compile Win32OSProcessPlugin.c. > > Cross-compilation is quite separate from generation. Cog is intentionally modified to spit out exactly the same source tree irrespective of platform. Needing a different VMMaker generation step for each platform is IMO an absurdity. Whether a plugin is compiled or not then depends on the plugins.int and plugins.ext files in each build directory. So the intent is to always spit out the UnixOSProcessPlugin source but only compile it on Unix platforms, as selected by plugins.int & plugins.ext. I notice I've not included my version of Win32OSProcessPlugin in Cog. I'll rectify that this evening. I checked that generating the Windows plugin source from a Linux > machine using VMMakerTool (from VMMaker-dtl.183) works as expected. > I am not able to test the Windows host generating Unix plugin source > (I am away on vacation with limited time for Squeak), but I certainly > expect that to work also. > > The most likely explanation is that the new CrossPlatformVMMaker > in the Cog VMMaker package does not know that OSPP is trying > to generate different sources for different target platforms, > so this mechanism no longer works. > See above. > > Short term you can probably work around the issue by editing the > #shouldBeTranslated and #shouldBeTranslatedFor: methods in > UnixOSProcessPlugin and Win32OSProcessPlugin. > > > I would really like to fix the Win32 bugs first. Could you help me with > > that? > > I cannot help right now, but hopefully others can step forward with > suggestions. > > Dave > > > HTH Eliot -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.squeakfoundation.org/pipermail/squeak-dev/attachments/20100726/4120977f/attachment.htm
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