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/*
* Copyright (C) 2010-2012 jeanfi@gmail.com
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include <locale.h>
#include <libintl.h>
#define _(str) gettext(str)
#include <string.h>
#include <glibtop/cpu.h>
#include "cpu.h"
static glibtop_cpu *cpu;
static float last_used;
static float last_total;
struct psensor *create_cpu_usage_sensor(int measures_len)
{
char *label;
int type;
char *id;
struct psensor *psensor;
id = strdup("cpu usage");
label = strdup("cpu usage");
type = SENSOR_TYPE_CPU_USAGE;
psensor = psensor_create(id, label, type, measures_len);
return psensor;
}
struct psensor * *
cpu_psensor_list_add(struct psensor **sensors, int measures_len)
{
struct psensor *s;
s = create_cpu_usage_sensor(measures_len);
return psensor_list_add(sensors, s);
}
static double get_usage()
{
unsigned long int used = 0;
unsigned long int dt;
double cpu_rate = UNKNOWN_DBL_VALUE;
if (!cpu)
cpu = malloc(sizeof(glibtop_cpu));
glibtop_get_cpu(cpu);
used = cpu->user + cpu->nice + cpu->sys;
dt = cpu->total - last_total;
if (dt)
cpu_rate = 100 * (used - last_used) / dt;
last_used = used;
last_total = cpu->total;
return cpu_rate;
}
void cpu_usage_sensor_update(struct psensor *s)
{
psensor_set_current_value(s, get_usage());
}
void cpu_psensor_list_update(struct psensor **sensors)
{
struct psensor **ss, *s;
ss = sensors;
while (*ss) {
s = *ss;
if (s->type == SENSOR_TYPE_CPU_USAGE)
cpu_usage_sensor_update(s);
ss++;
}
}
void cpu_cleanup()
{
if (cpu)
free(cpu);
}
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