Files
libgtop/sysdeps/kernel/uptime.c
Martin Baulig 6120c5e4a8 Use (1L << feature)' instead of (1 << feature)' to avoid problems
with integer overflows when we add more fields.
1999-05-06 21:35:36 +00:00

63 lines
1.8 KiB
C

/* $Id$ */
/* Copyright (C) 1998-99 Martin Baulig
This file is part of LibGTop 1.0.
Contributed by Martin Baulig <martin@home-of-linux.org>, March 1999.
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 <glibtop.h>
#include <glibtop/uptime.h>
#include <glibtop_private.h>
static unsigned long _glibtop_sysdeps_uptime =
(1L << GLIBTOP_UPTIME_UPTIME) + (1L << GLIBTOP_UPTIME_IDLETIME) +
(1L << GLIBTOP_UPTIME_BOOT_TIME);
/* Init function. */
void
glibtop_init_uptime_s (glibtop *server)
{
server->sysdeps.uptime = _glibtop_sysdeps_uptime;
}
/* Provides uptime and idle time. */
void
glibtop_get_uptime_s (glibtop *server, glibtop_uptime *buf)
{
libgtop_stat_t stat;
unsigned long total;
memset (buf, 0, sizeof (glibtop_uptime));
if (glibtop_get_proc_data_stat_s (server, &stat))
return;
total = stat.cpu.user + stat.cpu.nice + stat.cpu.sys + stat.cpu.idle;
buf->uptime = (double) total / (double) stat.frequency;
buf->idletime = (double) stat.cpu.idle / (double) stat.frequency;
buf->boot_time = stat.boot_time;
buf->flags = _glibtop_sysdeps_uptime;
}