mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-18 19:10:06 +00:00
84fb7c8c26
2001-12-31 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/getloadavg.c (getloadavg): Always use C locale to parse /proc/loadavg. 2001-12-31 Jakub Jelinek <jakub@redhat.com> * elf/dl-conflict.c: Include sys/param.h. (RESOLVE_CONFLICT_FIND_MAP): Cast r_offset to ElfW(Addr). * sysdeps/alpha/dl-machine.h (elf_machine_runtime_setup): Avoid warning. (TRAMPOLINE_TEMPLATE, RTLD_START): Don't use multi-line string literals to avoid warnings. * configure.in: Don't check for gsed since we do not use it anywhere.
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/* Get system load averages. Linux (/proc/loadavg) version.
|
|
Copyright (C) 1999, 2000, 2001 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>
|
|
|
|
/* 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 ("/proc/loadavg", O_RDONLY);
|
|
if (fd < 0)
|
|
return -1;
|
|
else
|
|
{
|
|
char buf[65], *p;
|
|
ssize_t nread;
|
|
int i;
|
|
|
|
nread = __read (fd, buf, sizeof buf - 1);
|
|
__close (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);
|
|
if (endp == NULL || 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;
|
|
}
|
|
}
|