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/*
* sar, sadc, mpstat and iostat common routines.
* (C) 1999-2002 by Sebastien GODARD <sebastien.godard@wanadoo.fr>
*
***************************************************************************
* This program 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. *
* *
* This program is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without 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 this program; if not, write to the Free Software Foundation, Inc., *
* 675 Mass Ave, Cambridge, MA 02139, USA. *
***************************************************************************
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <errno.h>
#include <unistd.h> /* For STDOUT_FILENO */
#include <sys/ioctl.h>
#include <asm/page.h> /* For PAGE_SIZE (which may be itself a call to getpagesize()).
* PAGE_SHIFT no longer necessarily exists in <asm/page.h>. So
* we use PAGE_SIZE to compute PAGE_SHIFT... */
#include "common.h"
#ifdef USE_NLS
#include <locale.h>
#include <libintl.h>
#define _(string) gettext(string)
#else
#define _(string) (string)
#endif
/*
* Get current date or time
*/
time_t get_localtime(struct tm *loc_time)
{
time_t timer;
struct tm *ltm;
time(&timer);
ltm = localtime(&timer);
*loc_time = *ltm;
return timer;
}
/*
* Find number of processors used on the machine
* (0 means one proc, 1 means two proc, etc.)
* As far as I know, there are two possibilities for this:
* 1) Use /proc/stat or 2) Use /proc/cpuinfo
* (I haven't heard of a better method to guess it...)
*/
int get_nb_proc_used(int *proc_used, unsigned int max_nr_cpus)
{
FILE *statfp;
char line[16];
int proc_nb, smp_kernel;
*proc_used = -1;
/* Open stat file */
if ((statfp = fopen(STAT, "r")) == NULL) {
fprintf(stderr, _("Cannot open %s: %s\n"), STAT, strerror(errno));
exit(1);
}
while (fgets(line, 16, statfp) != NULL) {
if (strncmp(line, "cpu ", 4) && !strncmp(line, "cpu", 3)) {
sscanf(line + 3, "%d", &proc_nb);
if (proc_nb > *proc_used)
*proc_used = proc_nb;
}
}
/*
* proc_used initial value: -1
* If proc_used < 0 then there is only one proc.
* If proc_used = 0 then there is only one proc but this is an SMP kernel
*/
smp_kernel = (*proc_used >= 0);
if (*proc_used < 0)
*proc_used = 0;
if (*proc_used >= max_nr_cpus) {
fprintf(stderr, _("Cannot handle so many processors!\n"));
exit(1);
}
/* Close file */
fclose(statfp);
return smp_kernel;
}
/*
* Print banner
*/
inline void print_gal_header(struct tm *loc_time, char *sysname, char *release, char *nodename)
{
char cur_date[64];
char *e;
if (((e = getenv(TM_FMT_VAR)) != NULL) && !strcmp(e, K_ISO))
strftime(cur_date, sizeof(cur_date), "%Y-%m-%d", loc_time);
else
strftime(cur_date, sizeof(cur_date), "%x", loc_time);
printf("%s %s (%s) \t%s\n", sysname, release, nodename, cur_date);
}
#ifdef USE_NLS
/*
* Init National Language Support
*/
void init_nls(void)
{
setlocale(LC_MESSAGES, "");
setlocale(LC_TIME, "");
setlocale(LC_NUMERIC, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
}
#endif
/*
* Get window height (number of lines)
*/
int get_win_height(void)
{
struct winsize win;
/* This default value will be used whenever STDOUT is redirected to a pipe or a file */
int rows = 3600 * 24;
if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1) && (win.ws_row > 2))
rows = win.ws_row - 2;
return rows;
}
/*
* Remove /dev from path name
*/
char *device_name(char *name)
{
if (!strncmp(name, "/dev/", 5))
return name + 5;
return name;
}
/*
* Get page shift in kB
*/
int get_kb_shift(void)
{
int shift = 0;
int size;
size = PAGE_SIZE >> 10; /* Assume that a page has a minimum size of 1 kB */
while (size > 1) {
shift++;
size >>= 1;
}
return shift;
}
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