Developer CD Series 1993…ch: Other People's Memory/ADC Developer CD (1993-03) (''Other People's Memory'')_iso/Dev.CD Mar 93.iso/Development Platforms/CSMP Digests/csmp-v1-065.txt

Text File | 1992-11-18 | 9.8 KB | 259 lines | [TEXT/MPS ]

C.S.M.P. Digest             Thu, 30 Apr 92       Volume 1 : Issue 65

Today's Topics:

    Using Macsbug ??


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-------------------------------------------------------

From: [e-mail] (Mengyik Yeong)
Subject: Using Macsbug ??
Date: Mon, 2 Mar 1992 04:51:50 GMT

I have gathered from past discussions in this group that Macsbug will
permit an elegant recovery from a hung application/program.  Better
than pressing the reset switch anyway.   I also gathered that it has
to be put in the system folder.  This I have done and was rewarded
with "Macsbug installed" at the Welcom Macintosh screen.

Now my question!  How do I use it to get back to the Finder after
a hung application/program.  I know I have to press the Interrupt
switch.  This I have tried and was put into Macsbug.  Thats where
I get stuck.  I have gone thru the help in Macsbug, but I still can't
figure out how to get back to the finder.

I want to use this mainly with Think C 5.0, when I get totally
stuck and can't break out any other way.  Are there any precautions
I should keep in mind when using Macsbug?

Also, whats the purpose of the debugger-pref-resource file?  I got
Macsbug from ftp.apple.com and can't figure out this file.

Thanks in advance.

Mengyik
[e-mail]




- -------------------------

From: [e-mail] (Doug McNaught)
Subject:  Using Macsbug ??
Organization: California Institute of Technology
Date: Mon, 2 Mar 1992 14:28:45 GMT

In article <[e-mail]> [e-mail] (Mengyik Yeong) writes:
  [he installed MacsBug in his System Folder]
>
>Now my question!  How do I use it to get back to the Finder after
>a hung application/program.  I know I have to press the Interrupt
>switch.  This I have tried and was put into Macsbug.  Thats where
>I get stuck.  I have gone thru the help in Macsbug, but I still can't
>figure out how to get back to the finder.

  Type 'es' (stands for ExitToShell) at the MacsBug prompt. This will get you
back to the Finder about 95% of the time. Once back in the Finder,
*immediately* choose "Restart" from the Special menu. There's no telling what
your hung application has done to the system.
>
>I want to use this mainly with Think C 5.0, when I get totally
>stuck and can't break out any other way.  Are there any precautions
>I should keep in mind when using Macsbug?

  Look at memory all you want, but don't change anything unless you know what
you're doing. As an aside, there are times when you want to look at your
variables in MacsBug--the trick I use is to drop into MacsBug, type
'atb GetNextEvent' and then 'g'. This drops you into the debugger at the point
that your app calls GNE (substitute WNE if that's what you use, as we all
should), so you're at a well-known point in the code, and your heap is going
to be consistent.

>Also, whats the purpose of the debugger-pref-resource file?  I got
>Macsbug from ftp.apple.com and can't figure out this file.

  It contains symbolic definitions and is where you put dcmd extensions if
you want to use them. There's an Apple book on MacsBug that I plan to get when
I can afford it--it's published as usual by Addison-Wesley.

regards,
doug
--
<><><><><><><><><><><><><><><>Go Skins!!<><><><><><><><><><><><><><><><>
<> Doug McNaught                          [e-mail] <>
<>  Help!!! I'm addicted to *Spaceward Ho!* Is there a support group? <>
<><><><><><><><><><><><><><><>Go Skins!!<><><><><><><><><><><><><><><><>



- -------------------------

From: [e-mail] (Doug McNaught)
Subject:  Using Macsbug ??
Organization: California Institute of Technology
Date: Mon, 2 Mar 1992 15:47:48 GMT


After my previous post on this subject, I received the following reply from
Tim Hollebeek ([e-mail]).

- -------Begin quote from Tim Hollebeek--------
In comp.sys.mac.programmer you write:

 [a previous poster asks how to get to the Finder from MacsBug]

>  Type 'es' (stands for ExitToShell) at the MacsBug prompt. This will get you
>back to the Finder about 95% of the time. Once back in the Finder,
>*immediately* choose "Restart" from the Special menu. There's no telling what
>your hung application has done to the system.

However, BE VERY CAREFULL ... TYPING 'ES' while in some toolbox routine can
(about 1 in 100 by my experience) corrupt open resource files (YOUR program,
YOUR system file, ESPECIALLY macro maker files).

You should first do an 'atba' specifying all traps (type 'help atba' for info
on how to do this).  Then you will be in a spot where it is guaranteed to be
safe to to an 'ES'.

(*** For Mac Hackers:  ES calls the _ExitToShell trap, which can cause problems
if the computer is in some extremely funky intermediate state (processing an
interupt, in the middle of a quick and dirty routine, etc.).  The 'atba' makes
sure you are out of the toolbox and in a semi-normal state. ***)

Please post this, since I cannot post from here, but this is a relatively
unknown problem with using the programmer's switch to save yourself from crashes, and I was forced to learn the truth the hard way.

--
- ----------------------------------------------------------------------------
Tim Hollebeek
[e-mail]

- ----------------------------------------------------------------------------

- -------End quote from Tim Hollebeek----------

Thanks, Tim! I'll try and remember that. Makes a lot of sense.
regards,
doug

--
<><><><><><><><><><><><><><><>Go Skins!!<><><><><><><><><><><><><><><><>
<> Doug McNaught                          [e-mail] <>
<>  Help!!! I'm addicted to *Spaceward Ho!* Is there a support group? <>
<><><><><><><><><><><><><><><>Go Skins!!<><><><><><><><><><><><><><><><>



+++++++++++++++++++++++++++

From: [e-mail] (Ray Arachelian)
Date: 14 Mar 92 04:15:00 GMT
Organization: FidoNet node 1:2603/204 - Not Even Odd, Forest Hills NY

to: [e-mail]

On 03-02-92, [e-mail] wrote to ALL:

 D>   It contains symbolic definitions and is where you put dcmd
 D> extensions if you want to use them. There's an Apple book on MacsBug
 D> that I plan to get when I can afford it--it's published as usual by
 D> Addison-Wesley.

Are there any dcmd's out there that will let one assemble as well as
disassemble?  How about a ResEdit code editor pref that will let one
assemble?  I've seen the disassemble version of the code editor, but it
isn't of much help.

 * Freddie 1.1 * You have been found guilty of commerce with the devil.

- --
=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
 Ray Arachelian - Internet: [e-mail]

+++++++++++++++++++++++++++

From: [e-mail] (Kent Sandvik)
Date: 30 Mar 92 03:02:15 GMT
Organization: MacDTS Mongols

In article <[e-mail]>, [e-mail] (Ray
Arachelian) writes:
>
> to: [e-mail]
>
> On 03-02-92, [e-mail] wrote to ALL:
>
>  D>   It contains symbolic definitions and is where you put dcmd
>  D> extensions if you want to use them. There's an Apple book on MacsBug
>  D> that I plan to get when I can afford it--it's published as usual by
>  D> Addison-Wesley.
>
> Are there any dcmd's out there that will let one assemble as well as
> disassemble?  How about a ResEdit code editor pref that will let one
> assemble?  I've seen the disassemble version of the code editor, but it
> isn't of much help.

One of our DTS engineers (former actually) wrote such a dcmd, I don't
know when it will become shareware though (RSN I guess).

Cheers,
Kent Sandvik/DTS

+++++++++++++++++++++++++++

From: [e-mail] (Jim Reekes)
Date: 30 Mar 92 03:12:14 GMT
Organization: Apple Computer, Inc.

In article <[e-mail]>, [e-mail] (Kent Sandvik) writes:
>
> In article <[e-mail]>, [e-mail] (Ray
> Arachelian) writes:
> >
> > to: [e-mail]
> >
> > On 03-02-92, [e-mail] wrote to ALL:
> >
> >  D>   It contains symbolic definitions and is where you put dcmd
> >  D> extensions if you want to use them. There's an Apple book on MacsBug
> >  D> that I plan to get when I can afford it--it's published as usual by
> >  D> Addison-Wesley.
> >
> > Are there any dcmd's out there that will let one assemble as well as
> > disassemble?  How about a ResEdit code editor pref that will let one
> > assemble?  I've seen the disassemble version of the code editor, but it
> > isn't of much help.

Use TMON.

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End of C.S.M.P. Digest
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