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/* Copyright (C) 1998 Joshua Sled
This file is part of LibGTop 1.0.
Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 1998.
LibGTop is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
LibGTop is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with LibGTop; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <glibtop.h>
#include <glibtop/error.h>
#include <glibtop/procsegment.h>
#include <glibtop_suid.h>
#include <kvm.h>
#include <sys/param.h>
#include <sys/sysctl.h>
static const unsigned long _glibtop_sysdeps_proc_segment =
(1L << GLIBTOP_PROC_SEGMENT_TEXT_RSS) +
(1L << GLIBTOP_PROC_SEGMENT_DATA_RSS);
static int pagesize;
/* Init function. */
void
_glibtop_init_proc_segment_p (glibtop *server)
{
pagesize = getpagesize ();
server->sysdeps.proc_segment = _glibtop_sysdeps_proc_segment;
}
/* Provides detailed information about a process. */
void
glibtop_get_proc_segment_p (glibtop *server,
glibtop_proc_segment *buf,
pid_t pid)
{
struct kinfo_proc *pinfo;
int count = 0;
glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_PROC_SEGMENT), 0);
memset (buf, 0, sizeof (glibtop_proc_segment));
/* It does not work for the swapper task. */
if (pid == 0) return;
/* Get the process info from the kernel */
pinfo = kvm_getprocs (server->machine.kd, KERN_PROC_PID, pid, &count);
if ((pinfo == NULL) || (count != 1)) {
glibtop_warn_io_r (server, "kvm_getprocs (%d)", pid);
return;
}
buf->text_rss = pinfo[0].ki_tsize * pagesize;
buf->data_rss = pinfo[0].ki_dsize * pagesize;
buf->flags = _glibtop_sysdeps_proc_segment;
}
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