Date: Tue, 13 May 2014 03:28:24 -0500 From: Scot Hetzel <swhetzel@gmail.com> To: FreeBSD Ports <freebsd-ports@freebsd.org> Subject: Re: Patch wanted: VmRSS, VmSize and VmStk in /proc/pid/status Message-ID: <CACdU%2Bf-h-kR%2BT%2BGTXH_u1zhQwk5jD9aEO6rQD6eQTn_rWb8eug@mail.gmail.com> In-Reply-To: <20140512213551.GE60374@graf.pompo.net> References: <20140512213551.GE60374@graf.pompo.net>
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On Mon, May 12, 2014 at 4:35 PM, Thierry Thomas <thierry@freebsd.org> wrote:
> Hello,
>
> In the new versions of french/aster, there is this piece of Linux code:
>
> -----------------------------------------------------------
> static char filename[80];
> static char sbuf[1024];
> char* S;
> int fd, num_read;
> long lmem;
> pid_t numpro;
>
> pid_t getpid(void);
>
> numpro = getpid();
>
> sprintf(filename, "/proc/%ld/status", (long)numpro);
> fd = open(filename, O_RDONLY, 0);
> if (fd==-1) return -1;
> num_read=read(fd,sbuf,(sizeof sbuf)-1);
> close(fd);
>
> S=strstr(sbuf,"VmData:")+8;
> val[0] = (INTEGER)atoi(S);
>
> S=strstr(sbuf,"VmSize:")+8;
> val[1] = (INTEGER)atoi(S);
>
> if ( strstr(sbuf,"VmPeak:") != NULL ) {
> S=strstr(sbuf,"VmPeak:")+8;
> val[2] = atoi(S);
> } else {
> val[2] = -1 ;
> }
>
> S=strstr(sbuf,"VmRSS:")+7;
> val[3] = (INTEGER)atoi(S);
>
> S=strstr(sbuf,"VmStk:")+7;
> lmem = atoi(S);
> return lmem ;
> -----------------------------------------------------------
>
> Of course, it does'nt work on FreeBSD, because our status has a
> different structure.
>
> As a quick & dirty work-around, I patched it to replace /proc by
> /compat/linux/proc and it works. Unfortunately, this is not a good
> solution, because this port is no more packageable (this piece of code
> is run at the end of the build).
>
> It's why I'm looking for help here: does somebody knows how the
> corresponding values of these Vm... can be found in FreeBSD?
>
You could try reading the source for linprocfs to see how it gets those values:
https://svnweb.freebsd.org/base/head/sys/compat/linprocfs/linprocfs.c?revision=263620&view=markup#l748
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