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/*
* Copyright (c) 2015 Cyril Hrubis <chrubis@suse.cz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms in version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* This code was extracted form the sched_setparam testcases.
*/
#include <unistd.h>
#ifdef BSD
# include <sys/types.h>
# include <sys/param.h>
# include <sys/sysctl.h>
#endif
#ifdef HPUX
# include <sys/param.h>
# include <sys/pstat.h>
#endif
static int get_ncpu(void)
{
int ncpu = -1;
/* This syscall is not POSIX but it should work on many system */
#ifdef _SC_NPROCESSORS_ONLN
ncpu = sysconf(_SC_NPROCESSORS_ONLN);
#else
# ifdef BSD
int mib[2];
size_t len = sizeof(ncpu);
mib[0] = CTL_HW;
mib[1] = HW_NCPU;
sysctl(mib, 2, &ncpu, &len, NULL, 0);
# endif
# ifdef HPUX
struct pst_dynamic psd;
pstat_getdynamic(&psd, sizeof(psd), 1, 0);
ncpu = (int)psd.psd_proc_cnt;
# endif
#endif /* _SC_NPROCESSORS_ONLN */
return ncpu;
}
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