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/* $Id$ */
/* 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 <glibtop.h>
#include <glibtop/error.h>
#include <glibtop/cpu.h>
#include <assert.h>
#include <sys/processor.h>
#include <glibtop_private.h>
static const unsigned long _glibtop_sysdeps_cpu =
(1L << GLIBTOP_CPU_TOTAL) + (1L << GLIBTOP_CPU_USER) +
(1L << GLIBTOP_CPU_SYS) + (1L << GLIBTOP_CPU_IDLE) +
(1L << GLIBTOP_CPU_XCPU_TOTAL) + (1L << GLIBTOP_CPU_XCPU_USER) +
(1L << GLIBTOP_CPU_XCPU_SYS) + (1L << GLIBTOP_CPU_XCPU_IDLE) +
(1L << GLIBTOP_CPU_FREQUENCY) + (1L << GLIBTOP_CPU_XCPU_FLAGS);
/* Init function. */
int
glibtop_init_cpu_s (glibtop *server)
{
server->sysdeps.cpu = _glibtop_sysdeps_cpu;
return 0;
}
/* Provides information about cpu usage. */
int
glibtop_get_cpu_s (glibtop *server, glibtop_cpu *buf)
{
kstat_ctl_t *kc = server->_priv->machine.kc;
cpu_stat_t cpu_stat;
processorid_t cpu;
int ncpu, found;
kid_t ret;
memset (buf, 0, sizeof (glibtop_cpu));
if(!kc)
return -GLIBTOP_ERROR_INCOMPATIBLE_KERNEL;
switch(kstat_chain_update(kc))
{
case -1: assert(0); /* Debugging purposes, shouldn't happen */
case 0: break;
default: glibtop_get_kstats(server);
}
ncpu = server->ncpu;
if (ncpu > GLIBTOP_NCPU)
ncpu = GLIBTOP_NCPU;
for (cpu = 0, found = 0; cpu < GLIBTOP_NCPU && found != ncpu; cpu++)
{
kstat_t *ksp = server->_priv->machine.cpu_stat_kstat [cpu];
if (!ksp) continue;
++found;
if(p_online(cpu, P_STATUS) == P_ONLINE)
buf->xcpu_flags |= (1L << cpu);
else
continue;
ret = kstat_read (kc, ksp, &cpu_stat);
if (ret == -1) {
glibtop_warn_io_r (server, "kstat_read (cpu_stat%d)", cpu);
continue;
}
buf->xcpu_idle [cpu] = cpu_stat.cpu_sysinfo.cpu [CPU_IDLE];
buf->xcpu_user [cpu] = cpu_stat.cpu_sysinfo.cpu [CPU_USER];
buf->xcpu_sys [cpu] = cpu_stat.cpu_sysinfo.cpu [CPU_KERNEL];
buf->xcpu_total [cpu] = buf->xcpu_idle [cpu] + buf->xcpu_user [cpu] +
buf->xcpu_sys [cpu];
buf->idle += cpu_stat.cpu_sysinfo.cpu [CPU_IDLE];
buf->user += cpu_stat.cpu_sysinfo.cpu [CPU_USER];
buf->sys += cpu_stat.cpu_sysinfo.cpu [CPU_KERNEL];
}
buf->total = buf->idle + buf->user + buf->sys;
buf->frequency = server->_priv->machine.ticks;
buf->flags = _glibtop_sysdeps_cpu;
return 0;
}
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