Stack Pointer..?

[7trackers]

Hi people...

Here's my question...

a function other than main is getting executed
you have to find out which function called this function

how can we do in C...?

[Walter Roberson]

In article <11*********************@f14g2000cwb.googlegroups. com>,
<7t*******@gmail.com> wrote:
:Here's my question...

:a function other than main is getting executed
:you have to find out which function called this function

:how can we do in C...?

You can't do your homework in portable C.
--
"It is important to remember that when it comes to law, computers
never make copies, only human beings make copies. Computers are given
commands, not permission. Only people can be given permission."
-- Brad Templeton

[pemo]

<7t*******@gmail.com> wrote in message
news:11*********************@f14g2000cwb.googlegro ups.com...

Hi people...

Here's my question...

a function other than main is getting executed
you have to find out which function called this function

how can we do in C...?

Use a debugger and breakpoints? Or is this an academic question.

[mario.demiguel]

7t*******@gmail.com wrote:

Hi people...

Here's my question...

a function other than main is getting executed
you have to find out which function called this function

how can we do in C...?

I believe using __FUNCTION__ will show the current function's name, I'm
not sure about showing the calling function's name. My best advice,
try searching the groups for __FUNCTION__ to see if this question, or a
similar one, has already been answered.

[C Wegrzyn]

ma************@gmail.com wrote:

7t*******@gmail.com wrote:

Hi people...

Here's my question...

a function other than main is getting executed
you have to find out which function called this function

how can we do in C...?

I believe using __FUNCTION__ will show the current function's name, I'm
not sure about showing the calling function's name. My best advice,
try searching the groups for __FUNCTION__ to see if this question, or a
similar one, has already been answered.

Are you using gcc? If so you can get access to the frames, which will
help you figure out how you got to where you are.

[Malcolm Dew-Jones]

7t*******@gmail.com wrote:
: Hi people...

: Here's my question...

: a function other than main is getting executed
: you have to find out which function called this function

: how can we do in C...?

You could rewrite your functions to include that information

(No pretense of being real code)

main()
{
do_something("from main",1,2,3);
}

do_something( char *from, int i, int j, int k)
{
do_something_else("do_something",'a','b','c');
}

do_something_else( char *from, etc...)
{
printf("I was called from %s",from);
}
To get a full stack trace you would have to add some kind of link as well,
but I haven't thought to add that here.

Various compilers and debuggers have options to help do this sort of thing
much easier.

--

This programmer available for rent.

[Jack Klein]

On 10 Oct 2005 11:48:02 -0700, ma************@gmail.com wrote in
comp.lang.c:

7t*******@gmail.com wrote:

Hi people...

Here's my question...

a function other than main is getting executed
you have to find out which function called this function

how can we do in C...?

I believe using __FUNCTION__ will show the current function's name, I'm
not sure about showing the calling function's name. My best advice,
try searching the groups for __FUNCTION__ to see if this question, or a
similar one, has already been answered.

Unfortunately, this isn't anything in the standard C language.

--
Jack Klein
Home: http://JK-Technology.Com
FAQs for
comp.lang.c http://www.eskimo.com/~scs/C-faq/top.html
comp.lang.c++ http://www.parashift.com/c++-faq-lite/
alt.comp.lang.learn.c-c++
http://www.contrib.andrew.cmu.edu/~a...FAQ-acllc.html

[Ben Pfaff]

7t*******@gmail.com writes:

a function other than main is getting executed
you have to find out which function called this function

If there's a specific function that wants to know this, then you
might be able to rig something up with a macro, e.g.
#define function(arg1, arg2) real_function(arg1, arg2, __func__)

...

void real_function(int arg1, void *arg2, const char *calling_function)
{
...
}
There is no portable, general solution.
--
"Am I missing something?"
--Dan Pop

[Dave Thompson]

On 10 Oct 2005 13:28:52 -0700, yf***@vtn1.victoria.tc.ca (Malcolm
Dew-Jones) wrote:

7t*******@gmail.com wrote:
: Hi people...

: Here's my question...

: a function other than main is getting executed
: you have to find out which function called this function

: how can we do in C...?

You could rewrite your functions to include that information <snip: added 'from' parameter to every function and call> To get a full stack trace you would have to add some kind of link as well,
but I haven't thought to add that here.

Various compilers and debuggers have options to help do this sort of thing
much easier.

To be clear: compilers and debuggers (usually) have options to trace
back the calling stack or equivalent. None that I know of do this by
the mechanism of adding a special from_name parameter.
- David.Thompson1 at worldnet.att.net