|
Packit |
d37888 |
/* Copyright (C) 1998 Joshua Sled
|
|
Packit |
d37888 |
This file is part of LibGTop 1.0.
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 1998.
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
LibGTop is free software; you can redistribute it and/or modify it
|
|
Packit |
d37888 |
under the terms of the GNU General Public License as published by
|
|
Packit |
d37888 |
the Free Software Foundation; either version 2 of the License,
|
|
Packit |
d37888 |
or (at your option) any later version.
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
LibGTop is distributed in the hope that it will be useful, but WITHOUT
|
|
Packit |
d37888 |
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
Packit |
d37888 |
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
Packit |
d37888 |
for more details.
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
You should have received a copy of the GNU General Public License
|
|
Packit |
d37888 |
along with LibGTop; see the file COPYING. If not, write to the
|
|
Packit |
d37888 |
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
Packit |
d37888 |
Boston, MA 02110-1301, USA.
|
|
Packit |
d37888 |
*/
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
#include <config.h>
|
|
Packit |
d37888 |
#include <glibtop.h>
|
|
Packit |
d37888 |
#include <glibtop/error.h>
|
|
Packit |
d37888 |
#include <glibtop/cpu.h>
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
#include <glibtop_suid.h>
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
#ifdef __NetBSD__
|
|
Packit |
d37888 |
#include <sys/sched.h>
|
|
Packit |
d37888 |
#endif
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
static const unsigned long _glibtop_sysdeps_cpu =
|
|
Packit |
d37888 |
(1L << GLIBTOP_CPU_TOTAL) + (1L << GLIBTOP_CPU_USER) +
|
|
Packit |
d37888 |
(1L << GLIBTOP_CPU_NICE) + (1L << GLIBTOP_CPU_SYS) +
|
|
Packit |
d37888 |
(1L << GLIBTOP_CPU_IDLE) + (1L << GLIBTOP_CPU_FREQUENCY) +
|
|
Packit |
d37888 |
(1L << GLIBTOP_CPU_IOWAIT);
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
#ifndef KERN_CP_TIME
|
|
Packit |
d37888 |
/* nlist structure for kernel access */
|
|
Packit |
d37888 |
static struct nlist nlst [] = {
|
|
Packit |
d37888 |
#ifdef __bsdi__
|
|
Packit |
d37888 |
{ "_cpustats" },
|
|
Packit |
d37888 |
#else
|
|
Packit |
d37888 |
{ "_cp_time" },
|
|
Packit |
d37888 |
#endif
|
|
Packit |
d37888 |
{ 0 }
|
|
Packit |
d37888 |
};
|
|
Packit |
d37888 |
#endif
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
/* MIB array for sysctl */
|
|
Packit |
d37888 |
static int mib_length=2;
|
|
Packit |
d37888 |
static int mib [] = { CTL_KERN, KERN_CLOCKRATE };
|
|
Packit |
d37888 |
#ifdef KERN_CP_TIME
|
|
Packit |
d37888 |
static int mib2 [] = { CTL_KERN, KERN_CP_TIME };
|
|
Packit |
d37888 |
#endif
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
/* Init function. */
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
void
|
|
Packit |
d37888 |
_glibtop_init_cpu_p (glibtop *server)
|
|
Packit |
d37888 |
{
|
|
Packit |
d37888 |
#ifndef KERN_CP_TIME
|
|
Packit |
d37888 |
if (kvm_nlist (server->machine->kd, nlst) < 0) {
|
|
Packit |
d37888 |
glibtop_warn_io_r (server, "kvm_nlist (cpu)");
|
|
Packit |
d37888 |
return;
|
|
Packit |
d37888 |
}
|
|
Packit |
d37888 |
#endif
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
/* Set this only if kvm_nlist () succeeded. */
|
|
Packit |
d37888 |
server->sysdeps.cpu = _glibtop_sysdeps_cpu;
|
|
Packit |
d37888 |
}
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
/* Provides information about cpu usage. */
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
void
|
|
Packit |
d37888 |
glibtop_get_cpu_p (glibtop *server, glibtop_cpu *buf)
|
|
Packit |
d37888 |
{
|
|
Packit |
d37888 |
#ifdef KERN_CP_TIME
|
|
Packit |
d37888 |
guint64 cpts [CPUSTATES];
|
|
Packit |
d37888 |
#else
|
|
Packit |
d37888 |
long cpts [CPUSTATES];
|
|
Packit |
d37888 |
#endif
|
|
Packit |
d37888 |
/* sysctl vars*/
|
|
Packit |
d37888 |
struct clockinfo ci;
|
|
Packit |
d37888 |
size_t length;
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_CPU), 0);
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
memset (buf, 0, sizeof (glibtop_cpu));
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
/* If this fails, the nlist may not be valid. */
|
|
Packit |
d37888 |
if (server->sysdeps.cpu == 0)
|
|
Packit |
d37888 |
return;
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
#ifdef KERN_CP_TIME
|
|
Packit |
d37888 |
length = sizeof (cpts);
|
|
Packit |
d37888 |
if (sysctl (mib2, mib_length, cpts, &length, NULL, 0)) {
|
|
Packit |
d37888 |
glibtop_warn_io_r (server, "sysctl");
|
|
Packit |
d37888 |
return;
|
|
Packit |
d37888 |
}
|
|
Packit |
d37888 |
#else
|
|
Packit |
d37888 |
if (kvm_read (server->machine->kd, nlst [0].n_value,
|
|
Packit |
d37888 |
&cpts, sizeof (cpts)) != sizeof (cpts)) {
|
|
Packit |
d37888 |
glibtop_warn_io_r (server, "kvm_read (cp_time)");
|
|
Packit |
d37888 |
return;
|
|
Packit |
d37888 |
}
|
|
Packit |
d37888 |
#endif
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
/* Get the clockrate data */
|
|
Packit |
d37888 |
length = sizeof (struct clockinfo);
|
|
Packit |
d37888 |
if (sysctl (mib, mib_length, &ci, &length, NULL, 0)) {
|
|
Packit |
d37888 |
glibtop_warn_io_r (server, "sysctl");
|
|
Packit |
d37888 |
return;
|
|
Packit |
d37888 |
}
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
/* set user time */
|
|
Packit |
d37888 |
buf->user = cpts [CP_USER];
|
|
Packit |
d37888 |
/* set nice time */
|
|
Packit |
d37888 |
buf->nice = cpts [CP_NICE];
|
|
Packit |
d37888 |
/* set sys time */
|
|
Packit |
d37888 |
buf->sys = cpts [CP_SYS];
|
|
Packit |
d37888 |
/* set idle time */
|
|
Packit |
d37888 |
buf->idle = cpts [CP_IDLE];
|
|
Packit |
d37888 |
/* set iowait (really just interrupt) time */
|
|
Packit |
d37888 |
buf->iowait = cpts [CP_INTR];
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
/* set frequency */
|
|
Packit |
d37888 |
/*
|
|
Packit |
d37888 |
FIXME -- is hz, tick, profhz or stathz wanted?
|
|
Packit |
d37888 |
buf->frequency = sysctl("kern.clockrate", ...);
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
struct clockinfo
|
|
Packit |
d37888 |
*/
|
|
Packit |
d37888 |
buf->frequency = ci.hz;
|
|
Packit |
d37888 |
/* set total */
|
|
Packit |
d37888 |
buf->total = cpts [CP_USER] + cpts [CP_NICE]
|
|
Packit |
d37888 |
+ cpts [CP_SYS] + cpts [CP_IDLE];
|
|
Packit |
d37888 |
|
|
Packit |
d37888 |
/* Set the flags last. */
|
|
Packit |
d37888 |
buf->flags = _glibtop_sysdeps_cpu;
|
|
Packit |
d37888 |
}
|