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/* Copyright (C) 1998-99 Martin Baulig
This file is part of LibGTop 1.0.
Contributed by Martin Baulig <martin@home-of-linux.org>, April 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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include <glibtop.h>
#include <glibtop/error.h>
#include <glibtop/proctime.h>
#include <glibtop_suid.h>
static const unsigned long _glibtop_sysdeps_proc_time =
(1L << GLIBTOP_PROC_TIME_RTIME) + (1L << GLIBTOP_PROC_TIME_FREQUENCY);
static const unsigned long _glibtop_sysdeps_proc_time_user =
(1L << GLIBTOP_PROC_TIME_UTIME) + (1L << GLIBTOP_PROC_TIME_STIME) +
(1L << GLIBTOP_PROC_TIME_CUTIME) + (1L << GLIBTOP_PROC_TIME_CSTIME) +
(1L << GLIBTOP_PROC_TIME_START_TIME);
#define tv2sec(tv) (((guint64) tv.tv_sec * 1000000) + (guint64) tv.tv_usec)
static unsigned int clockrate;
static int mib [] = { CTL_KERN, KERN_CLOCKRATE };
/* Init function. */
void
_glibtop_init_proc_time_p (glibtop *server)
{
struct clockinfo ci;
size_t length;
length = sizeof (ci);
if (sysctl (mib, 2, &ci, &length, NULL, 0) == 0)
clockrate = ci.hz;
if (!clockrate)
clockrate = 1; /* XXX avoid div by 0 later */
server->sysdeps.proc_time = _glibtop_sysdeps_proc_time |
_glibtop_sysdeps_proc_time_user;
}
/* Provides detailed information about a process. */
void
glibtop_get_proc_time_p (glibtop *server, glibtop_proc_time *buf,
pid_t pid)
{
struct kinfo_proc *pinfo;
int count;
glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_PROC_TIME), 0);
memset (buf, 0, sizeof (glibtop_proc_time));
/* It does not work for the swapper task. */
if (pid == 0) return;
/* Get the process information */
pinfo = kvm_getprocs (server->machine->kd, KERN_PROC_PID, pid,
sizeof (*pinfo), &count);
if (pinfo == NULL) {
glibtop_warn_io_r (server, "kvm_getprocs (%d)", pid);
return;
}
buf->rtime = pinfo[0].p_rtime_sec * clockrate
+ pinfo[0].p_rtime_usec * clockrate / 1000000;
buf->frequency = clockrate;
buf->flags = _glibtop_sysdeps_proc_time;
buf->utime = pinfo[0].p_uutime_sec * 1000000
+ pinfo[0].p_uutime_usec;
buf->stime = pinfo[0].p_ustime_sec * 1000000
+ pinfo[0].p_ustime_usec;
buf->cutime = pinfo[0].p_uctime_sec * 1000000
+ pinfo[0].p_uctime_usec; /* XXX is u+s */
buf->cstime = 0; /* XXX */
buf->start_time = pinfo[0].p_ustart_sec;
buf->flags |= _glibtop_sysdeps_proc_time_user;
}
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