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/* Copyright (C) 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Bruno Haible <bruno@clisp.org>, 2002.
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 <sys/sysctl.h>
#include <unistd.h>
#include <stddef.h>
int
__get_nprocs (void)
{
/* Fetch sysctl value of "hw.ncpu". */
int request[2] = { CTL_HW, HW_NCPU };
int result;
size_t result_len = sizeof (result);
if (__sysctl (request, 2, &result, &result_len, NULL, 0) < 0)
/* Dummy result. */
return 1;
return result;
}
weak_alias (__get_nprocs, get_nprocs)
int
__get_nprocs_conf (void)
{
/* We don't know how to distinguish between configured and active CPUs. */
return __get_nprocs ();
}
weak_alias (__get_nprocs_conf, get_nprocs_conf)
long int
__get_phys_pages (void)
{
/* Fetch sysctl value of "hw.physmem". This is a little smaller than
the real installed memory size, but so what. */
int request[2] = { CTL_HW, HW_PHYSMEM };
unsigned long int result;
size_t result_len = sizeof (result);
if (__sysctl (request, 2, &result, &result_len, NULL, 0) < 0)
return -1;
return result / __getpagesize();
}
weak_alias (__get_phys_pages, get_phys_pages)
long int
__get_avphys_pages (void)
{
#if 1
int result1;
int result2;
{
/* Fetch sysctl value of "vm.stats.vm.v_inactive_count". */
size_t result_len = sizeof (result1);
if (__sysctlbyname ("vm.stats.vm.v_inactive_count", &result1, &result_len,
NULL, 0) < 0)
return -1;
}
{
/* Fetch sysctl value of "vm.stats.vm.v_free_count". */
size_t result_len = sizeof (result2);
if (__sysctlbyname ("vm.stats.vm.v_free_count", &result2, &result_len,
NULL, 0) < 0)
return -1;
}
return result1 + result2;
#else
/* This does not appear to work. */
/* Fetch v_inactive_count field of sysctl value of "vm.vmmeter". */
int request[2] = { CTL_VM, VM_METER };
struct vmmeter result;
size_t result_len = sizeof (result);
if (__sysctl (request, 2, &result, &result_len, NULL, 0) < 0)
return -1;
return result.v_inactive_count;
#endif
}
weak_alias (__get_avphys_pages, get_avphys_pages)
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