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/* $Id$ */
/* 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 Library 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 Library General Public
License for more details.
You should have received a copy of the GNU Library General Public
License along with LibGTop; see the file COPYING.LIB. 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/mem.h>
static const unsigned long _glibtop_sysdeps_mem =
(1 << GLIBTOP_MEM_TOTAL) + (1 << GLIBTOP_MEM_USED) +
(1 << GLIBTOP_MEM_FREE) + (1 << GLIBTOP_MEM_SHARED) +
(1 << GLIBTOP_MEM_BUFFER) + (1 << GLIBTOP_MEM_CACHED) +
(1 << GLIBTOP_MEM_USER);
/* Init function. */
void
glibtop_init_mem_s (glibtop *server)
{
server->sysdeps.mem = _glibtop_sysdeps_mem;
}
/* Provides information about memory usage. */
#define FILENAME "/proc/meminfo"
void
glibtop_get_mem_s (glibtop *server, glibtop_mem *buf)
{
char buffer [BUFSIZ], *p;
int fd, len;
glibtop_init_s (&server, GLIBTOP_SYSDEPS_MEM, 0);
memset (buf, 0, sizeof (glibtop_mem));
fd = open (FILENAME, O_RDONLY);
if (fd < 0)
glibtop_error_io_r (server, "open (%s)", FILENAME);
len = read (fd, buffer, BUFSIZ-1);
if (len < 0)
glibtop_error_io_r (server, "read (%s)", FILENAME);
close (fd);
buffer [len] = '\0';
p = skip_line (buffer);
p = skip_token (p); /* "Mem:" */
buf->total = strtoul (p, &p, 0);
buf->used = strtoul (p, &p, 0);
buf->free = strtoul (p, &p, 0);
buf->shared = strtoul (p, &p, 0);
buf->buffer = strtoul (p, &p, 0);
buf->cached = strtoul (p, &p, 0);
buf->user = buf->total - buf->free - buf->shared - buf->buffer;
buf->flags = _glibtop_sysdeps_mem;
}
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