76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/* $OpenBSD: uptime.c,v 1.6 2011/06/01 07:24:49 jasper Exp $ */
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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include <config.h>
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/uptime.h>
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#include <glibtop/cpu.h>
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static const unsigned long _glibtop_sysdeps_uptime =
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(1L << GLIBTOP_UPTIME_UPTIME) + (1L << GLIBTOP_UPTIME_IDLETIME) +
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(1UL << GLIBTOP_UPTIME_BOOT_TIME);
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static const unsigned long _required_cpu_flags =
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(1L << GLIBTOP_CPU_TOTAL) + (1L << GLIBTOP_CPU_IDLE) +
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(1L << GLIBTOP_CPU_FREQUENCY);
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/* Init function. */
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void
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_glibtop_init_uptime_p (glibtop *server)
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{
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server->sysdeps.uptime = _glibtop_sysdeps_uptime;
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}
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/* Provides uptime and idle time. */
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void
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glibtop_get_uptime_p (glibtop *server, glibtop_uptime *buf)
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{
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time_t now;
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int mib[2];
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struct timeval boottime;
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size_t size;
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glibtop_cpu cpu;
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mib[0] = CTL_KERN;
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mib[1] = KERN_BOOTTIME;
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size = sizeof(boottime);
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if (sysctl(mib, 2, &boottime, &size, NULL, 0) != -1 &&
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boottime.tv_sec != 0) {
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time(&now);
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buf->uptime = now - boottime.tv_sec;
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buf->boot_time = boottime.tv_sec;
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}
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glibtop_get_cpu_p (server, &cpu);
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/* Put something clever in buf->idletime: CP_IDLE. */
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buf->idletime = (double) cpu.idle / (double) cpu.frequency;
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buf->idletime /= (double) (server->ncpu + 1);
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buf->flags = _glibtop_sysdeps_uptime;
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}
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