[TUHS] interpreted C?

[TUHS] interpreted C?

[Larry McVoy]

Decades ago there was an interpreted C in an X10 or X11 app, I believe it
came from the UK.  And maybe it wasn't X11, maybe it was Sunview? 
Whatever it was the author didn't like the bundled scrollbars and had
their own custom made one.

You could set breakpoints like a debugger and then go look around at state.

Does anyone else remember that app and what it was called?

Re: [TUHS] interpreted C?

[Bakul Shah]

The ups debugger by Mark Russell of University of Kent. It used x11 or sunview. IIRC it used a separate graphics library built directly on top of x11 (or sunview) that provided variable scrolling etc. scrolling speed and direction depended on the distance you dragged the mouse pointer from its initial position. You could click on any source like and add a break or custom code in interpreted C. You could click on the data structure window and follow linked list structures etc. The last version was 3.38 in 2003. I don’t think it works with anything more modern than gcc3. The nicest debugger I ever used.

> On May 4, 2019, at 1:48 PM, Larry McVoy <lm@mcvoy.com> wrote:
> 
> Decades ago there was an interpreted C in an X10 or X11 app, I believe it
> came from the UK.  And maybe it wasn't X11, maybe it was Sunview? 
> Whatever it was the author didn't like the bundled scrollbars and had
> their own custom made one.
> 
> You could set breakpoints like a debugger and then go look around at state.
> 
> Does anyone else remember that app and what it was called?

Re: [TUHS] interpreted C?

[Larry McVoy]

That's it!  And my memory is exactly like yours, it was a pleasant debugger.
And I think you are right, the normal code was C but the break points ran
in a interpreter.  Neat tool, a shame it's not maintained.

On Sat, May 04, 2019 at 02:08:10PM -0700, Bakul Shah wrote:
> The ups debugger by Mark Russell of University of Kent. It used x11 or sunview. IIRC it used a separate graphics library built directly on top of x11 (or sunview) that provided variable scrolling etc. scrolling speed and direction depended on the distance you dragged the mouse pointer from its initial position. You could click on any source like and add a break or custom code in interpreted C. You could click on the data structure window and follow linked list structures etc. The last version was 3.38 in 2003. I don???t think it works with anything more modern than gcc3. The nicest debugger I ever used.
> 
> > On May 4, 2019, at 1:48 PM, Larry McVoy <lm@mcvoy.com> wrote:
> > 
> > Decades ago there was an interpreted C in an X10 or X11 app, I believe it
> > came from the UK.  And maybe it wasn't X11, maybe it was Sunview? 
> > Whatever it was the author didn't like the bundled scrollbars and had
> > their own custom made one.
> > 
> > You could set breakpoints like a debugger and then go look around at state.
> > 
> > Does anyone else remember that app and what it was called?

-- 
---
Larry McVoy            	     lm at mcvoy.com             http://www.mcvoy.com/lm 

Re: [TUHS] interpreted C?

[Richard Salz]

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Also there was a commercial product, centerline C. Originally Saber-C.

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Re: [TUHS] interpreted C?

[Bakul Shah]

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Turns out, it is still being maintained!

https://github.com/sth/ups

Previous sourceforge site is still around and has a screenshot of ups
http://ups.sourceforge.net/

No idea if the ups-users group is around. The last time there was any activity
was in 2010 — including a post from you!

> On May 4, 2019, at 2:30 PM, Larry McVoy <lm@mcvoy.com> wrote:
> 
> That's it!  And my memory is exactly like yours, it was a pleasant debugger.
> And I think you are right, the normal code was C but the break points ran
> in a interpreter.  Neat tool, a shame it's not maintained.
> 
>> On Sat, May 04, 2019 at 02:08:10PM -0700, Bakul Shah wrote:
>> The ups debugger by Mark Russell of University of Kent. It used x11 or sunview. IIRC it used a separate graphics library built directly on top of x11 (or sunview) that provided variable scrolling etc. scrolling speed and direction depended on the distance you dragged the mouse pointer from its initial position. You could click on any source like and add a break or custom code in interpreted C. You could click on the data structure window and follow linked list structures etc. The last version was 3.38 in 2003. I don???t think it works with anything more modern than gcc3. The nicest debugger I ever used.
>> 
>>> On May 4, 2019, at 1:48 PM, Larry McVoy <lm@mcvoy.com> wrote:
>>> 
>>> Decades ago there was an interpreted C in an X10 or X11 app, I believe it
>>> came from the UK.  And maybe it wasn't X11, maybe it was Sunview? 
>>> Whatever it was the author didn't like the bundled scrollbars and had
>>> their own custom made one.
>>> 
>>> You could set breakpoints like a debugger and then go look around at state.
>>> 
>>> Does anyone else remember that app and what it was called?
> 
> -- 
> ---
> Larry McVoy                     lm at mcvoy.com             http://www.mcvoy.com/lm 

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Re: [TUHS] interpreted C?

[Jon Forrest]

On 5/4/2019 3:05 PM, Richard Salz wrote:
> Also there was a commercial product, centerline C. Originally Saber-C.

There's also Ch from https://www.softintegration.com/


"Ch is a C/C++ interpreter and scripting language environment."

Jon

Re: [TUHS] interpreted C?

[Clem cole]

Peter Darrell did another one as a companion to the his learning C book in the mid/late 90s.  I’ll have to ask him what happened to it.  He later morphed it into VisSol which was a mathlab like language that was visual drag/drop system that was popular in the scientific community.  

Sent from my PDP-7 Running UNIX V0 expect things to be almost but not quite. 

> On May 4, 2019, at 6:23 PM, Jon Forrest <nobozo@gmail.com> wrote:
> 
> 
> 
>> On 5/4/2019 3:05 PM, Richard Salz wrote:
>> Also there was a commercial product, centerline C. Originally Saber-C.
> 
> There's also Ch from https://www.softintegration.com/
> 
> 
> "Ch is a C/C++ interpreter and scripting language environment."
> 
> Jon

Re: [TUHS] interpreted C?

[Larry McVoy]

Does anyone know what the fix is for this:

./ci_compile_expr.c: In function 'opcode_offset':
./ci_compile_expr.c:599:11: error: 'LONGLONG_FORM_OFFSET' undeclared (first use
in this function)
    return LONGLONG_FORM_OFFSET;

On Sat, May 04, 2019 at 03:18:30PM -0700, Bakul Shah wrote:
> Turns out, it is still being maintained!
> 
> https://github.com/sth/ups
> 
> Previous sourceforge site is still around and has a screenshot of ups
> http://ups.sourceforge.net/
> 
> No idea if the ups-users group is around. The last time there was any activity
> was in 2010 ??? including a post from you!
> 
> > On May 4, 2019, at 2:30 PM, Larry McVoy <lm@mcvoy.com> wrote:
> > 
> > That's it!  And my memory is exactly like yours, it was a pleasant debugger.
> > And I think you are right, the normal code was C but the break points ran
> > in a interpreter.  Neat tool, a shame it's not maintained.
> > 
> >> On Sat, May 04, 2019 at 02:08:10PM -0700, Bakul Shah wrote:
> >> The ups debugger by Mark Russell of University of Kent. It used x11 or sunview. IIRC it used a separate graphics library built directly on top of x11 (or sunview) that provided variable scrolling etc. scrolling speed and direction depended on the distance you dragged the mouse pointer from its initial position. You could click on any source like and add a break or custom code in interpreted C. You could click on the data structure window and follow linked list structures etc. The last version was 3.38 in 2003. I don???t think it works with anything more modern than gcc3. The nicest debugger I ever used.
> >> 
> >>> On May 4, 2019, at 1:48 PM, Larry McVoy <lm@mcvoy.com> wrote:
> >>> 
> >>> Decades ago there was an interpreted C in an X10 or X11 app, I believe it
> >>> came from the UK.  And maybe it wasn't X11, maybe it was Sunview? 
> >>> Whatever it was the author didn't like the bundled scrollbars and had
> >>> their own custom made one.
> >>> 
> >>> You could set breakpoints like a debugger and then go look around at state.
> >>> 
> >>> Does anyone else remember that app and what it was called?
> > 
> > -- 
> > ---
> > Larry McVoy                     lm at mcvoy.com             http://www.mcvoy.com/lm 

-- 
---
Larry McVoy            	     lm at mcvoy.com             http://www.mcvoy.com/lm 

Re: [TUHS] interpreted C?

[Bakul Shah]

On Sat, 04 May 2019 17:07:08 -0700 Larry McVoy <lm@mcvoy.com> wrote:
> Does anyone know what the fix is for this:
>
> ./ci_compile_expr.c: In function 'opcode_offset':
> ./ci_compile_expr.c:599:11: error: 'LONGLONG_FORM_OFFSET' undeclared (first u
> se
> in this function)
>     return LONGLONG_FORM_OFFSET;

add --enable-longlong when calling configure.
This is still not enough to compile it on freebsd though.
I hacked in #include <sys/signal.h> in ifdefs.h but nope.

Re: [TUHS] interpreted C?

[Larry McVoy]

On Sat, May 04, 2019 at 05:15:40PM -0700, Bakul Shah wrote:
> On Sat, 04 May 2019 17:07:08 -0700 Larry McVoy <lm@mcvoy.com> wrote:
> > Does anyone know what the fix is for this:
> >
> > ./ci_compile_expr.c: In function 'opcode_offset':
> > ./ci_compile_expr.c:599:11: error: 'LONGLONG_FORM_OFFSET' undeclared (first u
> > se
> > in this function)
> >     return LONGLONG_FORM_OFFSET;
> 
> add --enable-longlong when calling configure.
> This is still not enough to compile it on freebsd though.
> I hacked in #include <sys/signal.h> in ifdefs.h but nope.

I got it to build on Linux 4.4.0-146-generic - cool!  Blast from the
past!
-- 
---
Larry McVoy            	     lm at mcvoy.com             http://www.mcvoy.com/lm