Desktop
/* $Id: swap.c,v 1.5 2011/08/22 23:35:02 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 <errno.h>
#if defined(__linux__)
# include <sys/sysinfo.h>
#elif defined(__NetBSD__)
# include <sys/sysctl.h>
#endif
#include <libintl.h>
#include "Panel.h"
#define _(string) gettext(string)
/* Swap */
/* private */
/* types */
typedef struct _Swap
{
PanelAppletHelper * helper;
GtkWidget * scale;
guint timeout;
} Swap;
/* prototypes */
static GtkWidget * _swap_init(PanelApplet * applet);
static void _swap_destroy(PanelApplet * applet);
/* callbacks */
#if defined(__linux__) || defined(__NetBSD__)
static gboolean _on_timeout(gpointer data);
#endif
/* public */
/* variables */
PanelApplet applet =
{
NULL,
"Swap",
NULL,
_swap_init,
_swap_destroy,
NULL,
FALSE,
TRUE,
NULL
};
/* private */
/* functions */
/* swap_init */
static GtkWidget * _swap_init(PanelApplet * applet)
{
#if defined(__linux__) || defined(__NetBSD__)
GtkWidget * ret;
Swap * swap;
PangoFontDescription * desc;
GtkWidget * widget;
if((swap = malloc(sizeof(*swap))) == NULL)
{
applet->helper->error(applet->helper->panel, "malloc", 0);
return NULL;
}
applet->priv = swap;
swap->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(_("Swap:"));
gtk_widget_modify_font(widget, desc);
gtk_box_pack_start(GTK_BOX(ret), widget, FALSE, FALSE, 0);
swap->scale = gtk_vscale_new_with_range(0, 100, 1);
gtk_widget_set_sensitive(swap->scale, FALSE);
gtk_range_set_inverted(GTK_RANGE(swap->scale), TRUE);
gtk_scale_set_value_pos(GTK_SCALE(swap->scale), GTK_POS_RIGHT);
gtk_box_pack_start(GTK_BOX(ret), swap->scale, FALSE, FALSE, 0);
swap->timeout = g_timeout_add(5000, _on_timeout, swap);
_on_timeout(swap);
pango_font_description_free(desc);
gtk_widget_show_all(ret);
return ret;
#else
error_set("%s: %s", "swap", _("Unsupported platform"));
return NULL;
#endif
}
/* swap_destroy */
static void _swap_destroy(PanelApplet * applet)
{
Swap * swap = applet->priv;
g_source_remove(swap->timeout);
free(swap);
}
/* callbacks */
/* on_timeout */
#if defined(__linux__)
static gboolean _on_timeout(gpointer data)
{
Swap * swap = data;
struct sysinfo sy;
gdouble value;
if(sysinfo(&sy) != 0)
return swap->helper->error(swap->helper->panel, "sysinfo",
TRUE);
if((value = sy.totalswap - sy.freeswap) != 0.0 && sy.totalswap != 0)
value /= sy.totalswap;
gtk_range_set_value(GTK_RANGE(swap->scale), value);
return TRUE;
}
#elif defined(__NetBSD__)
static gboolean _on_timeout(gpointer data)
{
Swap * swap = data;
int mib[] = { CTL_VM, VM_UVMEXP };
struct uvmexp ue;
size_t size = sizeof(ue);
gdouble value;
if(sysctl(mib, 2, &ue, &size, NULL, 0) < 0)
return TRUE;
if((value = ue.swpgonly) != 0.0 && ue.swpages != 0)
value /= ue.swpages;
gtk_range_set_value(GTK_RANGE(swap->scale), value);
return TRUE;
}
#endif