GDB Query

GDB Query

[Vikas S]

Hi,


I've two queries on gdb.

1) I wish to have a break whenever a function call is encountered. The no. 
of functions is
very high and may change.

2) Can we pass break and other parameters from unix command line.

Thanks,
Vikas

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RE: GDB Query

[Monika Chaddha]

>-----Original Message-----
>From: gdb-owner@sources.redhat.com
[mailto:gdb-owner@sources.redhat.com] On
>Behalf Of Vikas S
>Sent: Tuesday, July 06, 2004 10:50 AM
>To: gdb@sources.redhat.com
>Subject: GDB Query
>
>
>Hi,

Hello,

>
>
>I've two queries on gdb.
>
>1) I wish to have a break whenever a function call is encountered. The
no.
>of functions is
>very high and may change.

I have not seen such type of facility in gdb till now.

>
>2) Can we pass break and other parameters from unix command line.

Do u want to put break point from unix command line or gdb command line?
From gdb command line u can do easily.

Regards
Monika Chaddha

Re: GDB Query

[Daniel Jacobowitz]

On Tue, Jul 06, 2004 at 10:50:07AM +0530, Vikas S wrote:
> 
> Hi,
> 
> 
> I've two queries on gdb.
> 
> 1) I wish to have a break whenever a function call is encountered. The no. 
> of functions is
> very high and may change.

Try rbreak.  I'm not sure how well GDB will perform when you set this
many breakpoints, though.

> 2) Can we pass break and other parameters from unix command line.

Yes, by using a command script (-x).

-- 
Daniel Jacobowitz

Re: GDB Query

[Vikas S]

I've turned on debugging while compiling. Also, I'm able to get the program
flow etc. Only variables/arguments values are not obtainable.

Regards,
Vikas

>From: Daniel Jacobowitz <drow@false.org>
>To: Vikas S <vikas_s40@hotmail.com>
>CC: gdb@sources.redhat.com
>Subject: Re: GDB Query
>Date: Tue, 6 Jul 2004 10:19:45 -0400
>
>When responding to posts on a mailing list, please post to the mailing
>list instead of mailing directly to the poster.
>
>On Tue, Jul 06, 2004 at 07:21:46PM +0530, Vikas S wrote:
> >
> > Thanks. I'm using rbreak.
> >
> > I'm having another problem.
> >
> > When I'm trying to see Local Variables and Arguments, it shows
> > "No symbol table info available". So, I'm unable to see variable
> > values and arguments.
>
>It sounds like that object does not have debugging information.
>
>
>--
>Daniel Jacobowitz

_________________________________________________________________
Claim your Citibank Ready Cash today. http://go.msnserver.com/IN/52041.asp 
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Re: GDB Query

[Daniel Jacobowitz]

When responding to posts on a mailing list, please post to the mailing
list instead of mailing directly to the poster.

On Tue, Jul 06, 2004 at 07:21:46PM +0530, Vikas S wrote:
> 
> Thanks. I'm using rbreak.
> 
> I'm having another problem.
> 
> When I'm trying to see Local Variables and Arguments, it shows
> "No symbol table info available". So, I'm unable to see variable
> values and arguments.

It sounds like that object does not have debugging information.


-- 
Daniel Jacobowitz

RE: GDB Query

[Monika Chaddha]

>-----Original Message-----
>From: Vikas S [mailto:vikas_s40@hotmail.com]
>Sent: Tuesday, July 06, 2004 4:56 PM
>To: monika@acmet.com
>Subject: RE: GDB Query
>
>
>Please note that I'm not aware of the full function flow and this is
>precisely
>what I'm trying to find out by putting breaks.
>


What I understand till now form your mails that u r debugging some
source code and want to understand the exact flow.

GDB is really nice to do this. Use DDD as a GUI for GDB, it will help u.
Put break point in main and in functions or lines which u suspect can be
part of flow. Use next/step (to go inside functions) commands

Try this; this will help u a lot. Try up and down during debugging, it
will show flow. By doing this u can find more places to put breakpoints.
Preferably use 'step' command and go inside functions, it will show u
the full flow.

Try this and tell me status or any problem if u face.

Cheers
Monika

RE: GDB Query

[Monika Chaddha]

>-----Original Message-----
>From: Vikas S [mailto:vikas_s40@hotmail.com]
>Sent: Tuesday, July 06, 2004 12:47 PM
>To: monika@acmet.com
>Subject: RE: GDB Query
>
>
>Hi,
>
>Thanks.
>
>1) Ok.. The reason I asked for this is that I'm trying to trace full
>function flow of a
>process. In case of gdb, everytime I've to type break manually for each
>function which
>is tedious. If you know any other function which will do the above job,
>please inform.
>I'm on Linux.

If u want to get rid of this problem than I have one solution for u .U
can put all breakpoints in a file and can run that file after invoking
gdb. U will get all breakpoints after running only this single file.

>
>2) I wanted to do it from unix command line. This is in relation to
above
>requirement
>only. I wanted something like
>
>$ gdb <program> <pid> break=f1,f2...

Yes I m getting u. I'll again see and try if I get something better.

Monika
>
>Thanks,
>Vikas
>
>>From: "Monika Chaddha" <monika@acmet.com>
>>To: "'Vikas S'" <vikas_s40@hotmail.com>
>>CC: <gdb@sources.redhat.com>
>>Subject: RE: GDB Query
>>Date: Tue, 6 Jul 2004 12:30:35 +0530
>>
>>
>>
>> >-----Original Message-----
>> >From: gdb-owner@sources.redhat.com
>>[mailto:gdb-owner@sources.redhat.com] On
>> >Behalf Of Vikas S
>> >Sent: Tuesday, July 06, 2004 10:50 AM
>> >To: gdb@sources.redhat.com
>> >Subject: GDB Query
>> >
>> >
>> >Hi,
>>
>>Hello,
>>
>> >
>> >
>> >I've two queries on gdb.
>> >
>> >1) I wish to have a break whenever a function call is encountered.
The
>>no.
>> >of functions is
>> >very high and may change.
>>
>>I have not seen such type of facility in gdb till now.
>>
>> >
>> >2) Can we pass break and other parameters from unix command line.
>>
>>Do u want to put break point from unix command line or gdb command
line?
>>From gdb command line u can do easily.
>>
>>Regards
>>Monika Chaddha
>>
>
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