/* 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., 51 Franklin Street, Fifth Floor,

   Boston, MA 02110-1301, USA.

*/

#include <config.h>

#include <glibtop/error.h>

#include <glibtop/loadavg.h>

#include "glibtop_private.h"

static const unsigned long _glibtop_sysdeps_loadavg =

(1L << GLIBTOP_LOADAVG_LOADAVG);

static const unsigned long _glibtop_sysdeps_loadavg_tasks =

(1L << GLIBTOP_LOADAVG_NR_RUNNING) +

(1L << GLIBTOP_LOADAVG_NR_TASKS) +

(1L << GLIBTOP_LOADAVG_LAST_PID);

/* Init function. */

void

_glibtop_init_loadavg_s (glibtop *server)

{

	server->sysdeps.loadavg = _glibtop_sysdeps_loadavg;

}

/* Provides load load averange. */

#define FILENAME	"/proc/loadavg"

void

glibtop_get_loadavg_s (glibtop *server, glibtop_loadavg *buf)

{

	char buffer [BUFSIZ], *p, *old;

	memset (buf, 0, sizeof (glibtop_loadavg));

	file_to_buffer(server, buffer, sizeof buffer, FILENAME);

	buf->loadavg [0] = g_ascii_strtod (buffer, &p);

	buf->loadavg [1] = g_ascii_strtod (p, &p);

	buf->loadavg [2] = g_ascii_strtod (p, &p);

	buf->flags = _glibtop_sysdeps_loadavg;

	p = next_token(p);

	/* Older Linux versions don't have the nr_running/nr_tasks fields. */

	old = p;

	while (*p) {

		if (*p == '/')

			break;

		if (!isdigit (*p))

			return;

		p++;

	}

	buf->nr_running  = strtoull (old, &p, 0); p++;

	buf->nr_tasks    = strtoull (p, &p, 0);

	buf->last_pid    = strtoull (p, &p, 0);

	buf->flags |= _glibtop_sysdeps_loadavg_tasks;

}