Stack information ...

Stack information ...

[Damien Touraine]

II would like to know if there is any way in Linux to monitor the stack 
of the current program ?
Ie : I would like to get the adress of the first element of the stack, 
the adress of the last one, the full size of the stack and so on.
Is-there a doc on the web on how to manage the stack ?

Moreover, I would also like to know how to get the information on the 
virtual memory used by the current process (the size of memory currently 
used by the process) ...

Friendly
    Damien TOURAINE

Re: Stack information ...

[Terje Eggestad]

Hi Damien

The current stack size is obtainable from /proc/pid/status (VmStk). 
If you need the VM addresses you need to make a hack, but you can start
by looking at the code for generation the status:
fs/proc/array.c:task_mem()

Note that with in C (gcc) you can get a hold of a bit of info:
see info gcc
	-> C extentions -> return address -> Getting the Return or Frame
Address of a Function

You can also use asm statement in C to inspect the stack, but you need
to do assembly....
 
The latter you get from /proc/.../maps and /status, and /statm (see man
proc)
also: ps -u -p pid 
VSZ is the virtual memory size, RSS is what is resident in phys memory. 

THreads is a bit trickier.

Terje

fre, 2002-02-15 kl. 12:45 skrev Damien Touraine:
> II would like to know if there is any way in Linux to monitor the stack 
> of the current program ?
> Ie : I would like to get the adress of the first element of the stack, 
> the adress of the last one, the full size of the stack and so on.
> Is-there a doc on the web on how to manage the stack ?
> 
> Moreover, I would also like to know how to get the information on the 
> virtual memory used by the current process (the size of memory currently 
> used by the process) ...
> 
> Friendly
>     Damien TOURAINE
> 
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Terje Eggestad                  mailto:terje.eggestad@scali.no
Scali Scalable Linux Systems    http://www.scali.com

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