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/* 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 <config.h>
#include <glibtop/error.h>
#include <glibtop/swap.h>
#include "glibtop_private.h"
#include <fcntl.h>
static const unsigned long _glibtop_sysdeps_swap =
(1L << GLIBTOP_SWAP_TOTAL) + (1L << GLIBTOP_SWAP_USED) +
(1L << GLIBTOP_SWAP_FREE);
static const unsigned long _glibtop_sysdeps_swap_paging =
(1L << GLIBTOP_SWAP_PAGEIN) + (1L << GLIBTOP_SWAP_PAGEOUT);
/* Init function. */
void
glibtop_init_swap_s (glibtop *server)
{
server->sysdeps.swap = _glibtop_sysdeps_swap |
_glibtop_sysdeps_swap_paging;
}
/* Provides information about swap usage. */
#define MEMINFO "/proc/meminfo"
#define PROC_STAT "/proc/stat"
#define PROC_VMSTAT "/proc/vmstat"
void
glibtop_get_swap_s (glibtop *server, glibtop_swap *buf)
{
char buffer [BUFSIZ], *p;
glibtop_init_s (&server, GLIBTOP_SYSDEPS_SWAP, 0);
memset (buf, 0, sizeof (glibtop_swap));
file_to_buffer(server, buffer, MEMINFO);
/* Kernel 2.6 with multiple lines */
buf->total = get_scaled(buffer, "SwapTotal:");
buf->free = get_scaled(buffer, "SwapFree:");
buf->used = buf->total - buf->free;
buf->flags = _glibtop_sysdeps_swap;
if(server->os_version_code >= LINUX_VERSION_CODE(2, 6, 0))
{
file_to_buffer (server, buffer, PROC_VMSTAT);
p = strstr (buffer, "\npswpin");
if(p)
{
p = skip_token(p);
buf->pagein = strtoull (p, &p, 0);
p = skip_token(p);
buf->pageout = strtoull (p, &p, 0);
buf->flags |= _glibtop_sysdeps_swap_paging;
}
}
else /* Linux 2.4 */
{
file_to_buffer (server, buffer, PROC_STAT);
p = strstr (buffer, "\nswap");
if(p)
{
p = skip_token (p);
buf->pagein = strtoull (p, &p, 0);
buf->pageout = strtoull (p, &p, 0);
buf->flags |= _glibtop_sysdeps_swap_paging;
}
}
}
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