[squeak-dev] Windows, stdin, stdout

Alistair Grant akgrant0710 at gmail.com
Sat Apr 7 08:24:34 UTC 2018


Hi Benoit,

On 7 April 2018 at 02:38, Benoit St-Jean via Squeak-dev
<squeak-dev at lists.squeakfoundation.org> wrote:
> Thanks for your help.
>
> So far, I've had :
>
> a) lots of "primitive failed", most of the time primitiveFileAtEnd
> (FilePlugin)

I've been able to reproduce this one.  I'll take a look and get back to you.

Thanks,
Alistair



> b) An error/warning message in the console,
> "VirtualProtect(x,y,PAGE_EXECUTE_READWRITE): No error" and then nothing
> happens, not even a prompt!
> c) A "Manufactured file handle detected" error
> d) An emergency error handler
> e) An error saying "stdout is not open"
> f) the VM terminating abruptly
> g) The "Squeak Cog Spur Virtual Machine" unresponsive and totally frozen
> (not even able to interrupt it!)
>
> I tried the original and some refactored (VERY simple snippets) examples I
> could find on the net using :
>
> a) OSProcess
> b) FileStream
> c) StdioListener
>
> I have tried all tips & tricks :
> a) load the "application code" from a script
> b) doIt the code in a workspace and save the image
> c) doIt some code with code to save the image first so the rest of the doIt
> resumes at startup
> d) I tried so many things I don't remember it all!!
>
> So far, nothing worked, not even was I once close !  Except for the example
> with StdioListener : it shows the prompt but does nothing with the input...
>
> I'm using Squeak 5.1 32bit on Windows 10.
>
> My goal is to produce a headless application is a *simple* way.  It can be a
> script or some code I execute in a workspace.  Then save the image (or
> whatever step is required).
>
> When running the application, I don't want to have to specify a script to
> start it up from the console.  Also, I don't want to open another command
> window!  I want the app/image to run from the command window without any
> artifact/trick the same way any other Windows utility/app would work.  I
> also want the application to be interactive (it waits for input, does
> something with the input, then shows result and presents me with a prompt
> again).
>
> Once I get this to work, you can be sure I'll document it in detail !!!!
>
>
>
> -----------------
> BenoƮt St-Jean
> Yahoo! Messenger: bstjean
> Twitter: @BenLeChialeux
> Pinterest: benoitstjean
> Instagram: Chef_Benito
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> Blogue: endormitoire.wordpress.com
> "A standpoint is an intellectual horizon of radius zero".  (A. Einstein)
>
>
> On Friday, April 6, 2018, 5:42:27 p.m. EDT, tim Rowledge <tim at rowledge.org>
> wrote:
>
>
>
>
>> On 06-04-2018, at 11:10 AM, Alistair Grant <akgrant0710 at gmail.com> wrote:
>>
>> Hi Benoit,
>>
>> On 6 April 2018 at 12:16, Benoit St-Jean via Squeak-dev
>> <squeak-dev at lists.squeakfoundation.org> wrote:
>>> Is there any way I can start squeak from a command window, *headless*,
>>> and
>>> WITHOUT providing a script and have an interactive application^  Say, for
>>> instance, my application waits for input and answers back the square of
>>> the
>>> number I type in?
>>>
>>> I've tried a gazillion examples I found and it just doesn't work at
>>> all...
>>>
>>> I'm on Windows 10 if that helps.
>>
>>
>> https://github.com/OpenSmalltalk/opensmalltalk-vm/blob/Cog/image/buildspurtrunkreaderimage.sh
>
> Just for the record here for the future - this process
> a) simply loads the CogTools-Listener (sub)package from the VMMaker
> repository - which is a very small bit of code we could very sensibly
> include in the default image
> b) uses a simple initial script to create an image that will start up at the
> beginning of an incantation that loops around the StdioListener. All you do
> is start up the image saved after loading the Listener tools with the
> StartReader.st - subsequent runs do not need that.
>
> Unfortunately it doesn't seem to be working quite right on my Pi at the
> moment; I get a "squeak>" prompt but it doesn't seem to ever read any input.
> I know it works in principle because I've used it plenty of times in the
> past , but clearly I'm forgetting some important detail.
>
>
> tim
> --
> tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
>
> Useful Latin Phrases:- Te audire no possum. Musa sapientum fixa est in aure.
> = I can't hear you. I have a banana in my ear.
>
>
>
>
>
>
>


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