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59 lines
1.4 KiB
59 lines
1.4 KiB
/*
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* Copyright (c) 2015 Cyril Hrubis <chrubis@suse.cz>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms in version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* This code was extracted form the sched_setparam testcases.
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*/
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#include <unistd.h>
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#ifdef BSD
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# include <sys/types.h>
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# include <sys/param.h>
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# include <sys/sysctl.h>
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#endif
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#ifdef HPUX
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# include <sys/param.h>
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# include <sys/pstat.h>
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#endif
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static int get_ncpu(void)
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{
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int ncpu = -1;
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/* This syscall is not POSIX but it should work on many system */
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#ifdef _SC_NPROCESSORS_ONLN
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ncpu = sysconf(_SC_NPROCESSORS_ONLN);
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#else
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# ifdef BSD
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int mib[2];
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size_t len = sizeof(ncpu);
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mib[0] = CTL_HW;
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mib[1] = HW_NCPU;
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sysctl(mib, 2, &ncpu, &len, NULL, 0);
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# endif
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# ifdef HPUX
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struct pst_dynamic psd;
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pstat_getdynamic(&psd, sizeof(psd), 1, 0);
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ncpu = (int)psd.psd_proc_cnt;
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# endif
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#endif /* _SC_NPROCESSORS_ONLN */
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return ncpu;
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}
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