vsize from within C++ (UNCLASSIFIED)

[m.roth at 5-cent.us]

Steve wrote:
> [mailto:redhat-list-bounces at redhat.com] On Behalf Of m.roth at 5-cent.us
> Sent: Wednesday, April 14, 2010 8:17 AM
>> Steve wrote:
>>
>>> Is it possible for a process to obtain information about itself (such
>>> as that provided by "top"), specifically vsize?
>
>> Sure. I never needed it, but a brief google for vsize linux c
>> programming gets
>
>> <http://stackoverflow.com/questions/669438/how-to-get-memory-usage-at-run-time-in-c>

>
> Thanks Mark!  I was working with /proc/self/stat and getting to the
> vSize value using system() and an awk command, but was having trouble
> getting the value back into a variable in my program...always getting 0
> which was the value passed back from system() ... 0 = success.

Right - system, either in awk or perl, only returns the status of the
command, and I'm not aware of any way to actually get info from it, other
than the *really* ugly way of <awkcmd> > /tmp/awkcmd.output; open/read
/tmp/awkcmd.output.
>
> I'll give this a try.  My Google searches didn't come up with anything
> this good.

You're welcome, Searches are their own art form - that's why I gave the
terms I used for the search, so as to give you *how* I found this. I
usually work my way down the tree: linux (top) vmsize (what I want to
find) c programming (what form I need the answer in).

     mark