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/* Get system load averages. Mach version.
Copyright (C) 1999-2014 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, see
<http://www.gnu.org/licenses/>. */
#include <mach.h>
#include <mach/host_info.h>
#include <hurd.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.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)
{
host_load_info_data_t info;
mach_msg_type_number_t size = HOST_LOAD_INFO_COUNT;
error_t err;
int i;
err = __host_info (__mach_host_self (), HOST_LOAD_INFO,
(host_info_t) &info, &size);
if (err)
return __hurd_fail (err);
if (size < HOST_LOAD_INFO_COUNT)
return __hurd_fail (EGRATUITOUS);
if (nelem > 3)
nelem = 3;
for (i = 0; i < nelem; ++i)
loadavg[i] = (double) info.avenrun[i] / (double) LOAD_SCALE;
return i;
}
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