mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-21 04:31:04 +08:00
4b5b009cc3
* include/locale.h: Define _nl_C_locobj_ptr. * iconv/gconv_charset.h: Use _nl_C_locobj_ptr instead of using pointer to _nl_C_locobj because we also need a cast. * iconv/gconv_conf.c: Likewise. * iconv/gconv_int.h: Likewise. * iconv/gconv_open.c: Likewise. * locale/duplocale.c: Likewise. * locale/freelocale.c: Likewise. * locale/newlocale.c: Likewise. * misc/syslog.c: Likewise. * stdlib/strtod_l.c: Likewise. * sysdeps/unix/sysv/linux/getloadavg.c: Likewise.
70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
/* Get system load averages. Linux (/proc/loadavg) version.
|
|
Copyright (C) 1999, 2000, 2001, 2003, 2005 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <locale.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <not-cancel.h>
|
|
|
|
/* Put the 1 minute, 5 minute and 15 minute load averages
|
|
into the first NELEM elements of LOADAVG.
|
|
Return the number written (never more than 3, but may be less than NELEM),
|
|
or -1 if an error occurred. */
|
|
|
|
int
|
|
getloadavg (double loadavg[], int nelem)
|
|
{
|
|
int fd;
|
|
|
|
fd = open_not_cancel_2 ("/proc/loadavg", O_RDONLY);
|
|
if (fd < 0)
|
|
return -1;
|
|
else
|
|
{
|
|
char buf[65], *p;
|
|
ssize_t nread;
|
|
int i;
|
|
|
|
nread = read_not_cancel (fd, buf, sizeof buf - 1);
|
|
close_not_cancel_no_status (fd);
|
|
if (nread <= 0)
|
|
return -1;
|
|
buf[nread - 1] = '\0';
|
|
|
|
if (nelem > 3)
|
|
nelem = 3;
|
|
p = buf;
|
|
for (i = 0; i < nelem; ++i)
|
|
{
|
|
char *endp;
|
|
loadavg[i] = __strtod_l (p, &endp, _nl_C_locobj_ptr);
|
|
if (endp == p)
|
|
/* This should not happen. The format of /proc/loadavg
|
|
must have changed. Don't return with what we have,
|
|
signal an error. */
|
|
return -1;
|
|
p = endp;
|
|
}
|
|
|
|
return i;
|
|
}
|
|
}
|