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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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <glibtop.h>
#include <glibtop/error.h>
#include <glibtop/proctime.h>
#include <glibtop_suid.h>
#include <sys/time.h>
#include <osreldate.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)
/* Init function. */
void
_glibtop_init_proc_time_p (glibtop *server)
{
server->sysdeps.proc_time = _glibtop_sysdeps_proc_time |
_glibtop_sysdeps_proc_time_user;
}
/* Taken from /usr/src/sys/kern/kern_resource.c */
/* 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;
struct clockinfo ci;
int count;
size_t len;
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;
glibtop_suid_enter (server);
/* Get the process information */
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);
glibtop_suid_leave (server);
return;
}
glibtop_suid_leave (server);
buf->rtime = pinfo [0].ki_runtime * 1e-6;
len = sizeof (ci);
if (sysctlbyname ("kern.clockrate", &ci, &len, NULL, 0)) {
glibtop_warn_io_r (server, "sysctl (kern.clockrate) (%d)", pid);
glibtop_suid_leave (server);
return;
}
buf->frequency = (ci.stathz ? ci.stathz : ci.hz);
buf->flags = _glibtop_sysdeps_proc_time;
buf->rtime *= buf->frequency;
if ((pinfo [0].ki_flag & PS_INMEM)) {
buf->utime = (pinfo [0].ki_runtime * 1e-6) * buf->frequency;
buf->stime = tv2sec (pinfo [0].ki_rusage.ru_stime) * buf->frequency;
buf->cutime = tv2sec (pinfo [0].ki_childtime) * buf->frequency;
#if (__FreeBSD_version >= 600006) || defined(__FreeBSD_kernel__)
buf->cstime = tv2sec (pinfo [0].ki_rusage_ch.ru_stime) * buf->frequency;
#else
buf->cstime = 0;
#endif
buf->start_time = tv2sec (pinfo [0].ki_start);
buf->flags |= _glibtop_sysdeps_proc_time_user;
}
}
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