Desktop
/* $Id: cpu.c,v 1.7 2010/03/14 21:43:58 khorben Exp $ */
/* Copyright (c) 2010 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Panel */
/* 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, version 3 of the License.
*
* 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, see <http://www.gnu.org/licenses/>. */
#include <sys/time.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#ifdef __NetBSD__
# include <sys/sysctl.h>
#endif
#include "Panel.h"
/* Cpu */
/* private */
/* types */
typedef struct _Cpu
{
PanelAppletHelper * helper;
GtkWidget * scale;
guint timeout;
#ifdef __NetBSD__
int used;
int total;
#endif
} Cpu;
/* prototypes */
static GtkWidget * _cpu_init(PanelApplet * applet);
static void _cpu_destroy(PanelApplet * applet);
/* callbacks */
#ifdef __NetBSD__
static gboolean _on_timeout(gpointer data);
#endif
/* public */
/* variables */
PanelApplet applet =
{
NULL,
_cpu_init,
_cpu_destroy,
PANEL_APPLET_POSITION_END,
FALSE,
TRUE,
NULL
};
/* private */
/* functions */
/* cpu_init */
static GtkWidget * _cpu_init(PanelApplet * applet)
{
#ifdef __NetBSD__
GtkWidget * ret;
Cpu * cpu;
PangoFontDescription * desc;
GtkWidget * widget;
if((cpu = malloc(sizeof(*cpu))) == NULL)
{
applet->helper->error(applet->helper->priv, "malloc", 0);
return NULL;
}
applet->priv = cpu;
cpu->helper = applet->helper;
ret = gtk_hbox_new(FALSE, 0);
desc = pango_font_description_new();
pango_font_description_set_weight(desc, PANGO_WEIGHT_BOLD);
widget = gtk_label_new("CPU:");
gtk_widget_modify_font(widget, desc);
gtk_box_pack_start(GTK_BOX(ret), widget, FALSE, FALSE, 0);
cpu->scale = gtk_vscale_new_with_range(0, 100, 1);
gtk_widget_set_sensitive(cpu->scale, FALSE);
gtk_range_set_inverted(GTK_RANGE(cpu->scale), TRUE);
gtk_scale_set_value_pos(GTK_SCALE(cpu->scale), GTK_POS_RIGHT);
gtk_box_pack_start(GTK_BOX(ret), cpu->scale, FALSE, FALSE, 0);
cpu->timeout = g_timeout_add(500, _on_timeout, cpu);
cpu->used = 0;
cpu->total = 0;
_on_timeout(cpu);
pango_font_description_free(desc);
gtk_widget_show_all(ret);
return ret;
#else
return NULL;
#endif
}
/* cpu_destroy */
static void _cpu_destroy(PanelApplet * applet)
{
Cpu * cpu = applet->priv;
g_source_remove(cpu->timeout);
free(cpu);
}
/* callbacks */
/* on_timeout */
#ifdef __NetBSD__
static gboolean _on_timeout(gpointer data)
{
Cpu * cpu = data;
int mib[] = { CTL_KERN, KERN_CP_TIME };
uint64_t cpu_time[CPUSTATES];
size_t size = sizeof(cpu_time);
int used;
int total;
gdouble value;
if(sysctl(mib, 2, &cpu_time, &size, NULL, 0) < 0)
return cpu->helper->error(cpu->helper->priv, "sysctl", TRUE);
used = cpu_time[CP_USER] + cpu_time[CP_SYS] + cpu_time[CP_NICE]
+ cpu_time[CP_INTR];
total = used + cpu_time[CP_IDLE];
if(cpu->used == 0 || total == cpu->total)
value = 0;
else
value = 100 * (used - cpu->used) / (total - cpu->total);
cpu->used = used;
cpu->total = total;
gtk_range_set_value(GTK_RANGE(cpu->scale), value);
return TRUE;
}
#endif