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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */

/* $Id$ */

/* 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., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

#include <glibtop.h>
#include <glibtop/error.h>
#include <glibtop/swap.h>

static unsigned long _glibtop_sysdeps_swap =
(1L << GLIBTOP_SWAP_TOTAL) + (1L << GLIBTOP_SWAP_USED) +
(1L << GLIBTOP_SWAP_FREE);

/* Init function. */

int
glibtop_init_swap_s (glibtop *server)
{
    server->sysdeps.swap = _glibtop_sysdeps_swap;

    return 0;
}

/* Provides information about swap usage. */

int
glibtop_get_swap_s (glibtop *server, glibtop_swap *buf)
{
    struct tbl_swapinfo swapinfo;
    int i;

    glibtop_init_s (&server, GLIBTOP_SYSDEPS_SWAP, 0);

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

    i = 0;
	
    while (table (TBL_SWAPINFO, i, (char *) &swapinfo, 1,
		  sizeof (struct tbl_swapinfo)) > 0) {
	buf->total += swapinfo.size * getpagesize ();
	buf->free  += swapinfo.free * getpagesize ();
	i++;
    }

    buf->flags = _glibtop_sysdeps_swap;
	
    buf->used  = buf->total - buf->free;

    return 0;
}