Classification: UNCLASSIFIED Caveats: NONE Thank Tim, I'll remember this should I need to access other commands from c++. I can definitely see where this would come in useful. For now, simply reading the stat file does what I need. Steve -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Tim P. Starrin Sent: Wednesday, April 14, 2010 11:29 AM To: General Red Hat Linux discussion list Subject: Re: vsize from within C++ (UNCLASSIFIED) You could always use "popen(3)" to run the command from a C program, then read the output of the command. Tim m.roth@xxxxxxxxx wrote: > Steve wrote: > >> [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of m.roth@xxxxxxxxx >> 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-a >>> t-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 > > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list Classification: UNCLASSIFIED Caveats: NONE -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
