50f086cb68
* glibtop_server.h: * glibtop_server.c: (try_file_to_buffer), (file_to_buffer): Added. These functions are commonly used. Misc cleanups. * cpu.c: (glibtop_get_cpu_s): * loadavg.c: (glibtop_get_loadavg_s): * mem.c: (glibtop_get_mem_s): * open.c: (glibtop_open_s): * swap.c: (glibtop_get_swap_s): * sysinfo.c: (init_sysinfo): * uptime.c: (glibtop_get_uptime_s): Replaced open/read/close by file_to_buffer().
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/* $Id$ */
|
|
|
|
/* 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/cpu.h>
|
|
#include <glibtop/open.h>
|
|
|
|
/* =====================================================
|
|
* Linux kernel version information for procps utilities
|
|
* Copyright (c) 1996 Charles Blake <cblake@bbn.com>
|
|
*/
|
|
#include <sys/utsname.h>
|
|
|
|
static unsigned get_linux_version(void) {
|
|
|
|
static unsigned linux_version_code = 0;
|
|
|
|
if(!linux_version_code) {
|
|
struct utsname uts;
|
|
unsigned x = 0, y = 0, z = 0; /* cleared in case sscanf() < 3 */
|
|
|
|
if (uname(&uts) == -1) /* failure most likely implies impending death */
|
|
exit(1);
|
|
|
|
if (sscanf(uts.release, "%u.%u.%u", &x, &y, &z) < 3)
|
|
fprintf(stderr, /* *very* unlikely to happen by accident */
|
|
"Non-standard uts for running kernel:\n"
|
|
"release %s=%u.%u.%u gives version code %d\n",
|
|
uts.release, x, y, z, LINUX_VERSION(x,y,z));
|
|
|
|
linux_version_code = LINUX_VERSION(x, y, z);
|
|
}
|
|
|
|
return linux_version_code;
|
|
}
|
|
|
|
/* ======================================================= */
|
|
|
|
/* 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;
|
|
|
|
server->os_version_code = get_linux_version();
|
|
|
|
file_to_buffer(server, buffer, FILENAME);
|
|
|
|
for (server->ncpu = 0; server->ncpu < GLIBTOP_NCPU; server->ncpu++) {
|
|
|
|
p = skip_line(p);
|
|
|
|
if (strncmp (p, "cpu", 3) || !isdigit (p [3]))
|
|
break;
|
|
}
|
|
|
|
#if DEBUG
|
|
printf ("\nThis machine has %d CPUs.\n\n", server->ncpu);
|
|
#endif
|
|
}
|