Order of memory segments

[qazmlp]

Is the order of memory segments(text, data, BSS, heap) guaranteed to
be same in any unix memory model ?

[Måns Rullgård]

[email]qazmlp1209@rediffmail.com[/email] (qazmlp) writes:

> Is the order of memory segments(text, data, BSS, heap) guaranteed to
> be same in any unix memory model ?

I can't imagine that it would.

--
Måns Rullgård
[email]mru@users.sf.net[/email]

[Rainer Temme]

"qazmlp" <qazmlp1209@rediffmail.com> wrote:

> Is the order of memory segments(text, data, BSS, heap) guaranteed to
> be same in any unix memory model ?

Hi qazmlp,

Neither is this order guaranteed nor is this order used by all systems
today...

Just think about how the dynamic loader works, if you use
dlopen() dlsym() within a prog... it's quite obvious that
text-segs and data-segs will appear mixed...

If you have access to a linux-system have a look
at /proc/some_pid/maps
( cat /proc/XXXXX/maps ) ... replace XXX with a legal
pid )

regards ... rainer

[Eric Sosman]

qazmlp wrote:

>
> Is the order of memory segments(text, data, BSS, heap) guaranteed to
> be same in any unix memory model ?

Given the existence of dlopen(), I don't see how any
particular order could be guaranteed.

--
[email]Eric.Sosman@sun.com[/email]