/* 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.h>

#include <glibtop/cpu.h>

#include <glibtop/open.h>

#include <glibtop/error.h>

#include "glibtop_private.h"

/* ======================================================= */

/* Opens pipe to gtop server. Returns 0 on success and -1 on error. */

#define FILENAME	"/proc/stat"

void

glibtop_open_s (glibtop *server, const char *program_name,

		const unsigned long features,

		const unsigned flags)

{

	char buffer [BUFSIZ], *p = buffer;

	server->name = program_name;

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

	p = skip_line(p); /* cpu */

	for (server->real_ncpu = 0; /* nop */; server->real_ncpu++) {

		if (!check_cpu_line(server, p, server->real_ncpu)) {

			server->real_ncpu--;

			break;

		}

		p = skip_line(p);

	}

	server->ncpu = MIN(GLIBTOP_NCPU - 1, server->real_ncpu);

	if (server->real_ncpu != server->ncpu) {

		glibtop_warn_r(server,

			       "This machine has %d CPUs, "

			       "%d are being monitored.",

			       server->real_ncpu + 1,

			       server->ncpu + 1);

	}

}