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https://gitlab.isc.org/isc-projects/bind9
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73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
/*
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* Copyright (C) 2000, 2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
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* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: os.c,v 1.10 2001/02/17 01:23:43 gson Exp $ */
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#include <config.h>
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#include <isc/os.h>
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#ifdef HAVE_SYSCONF
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#include <unistd.h>
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static inline long
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sysconf_ncpus(void) {
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#if defined(_SC_NPROCESSORS_ONLN)
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return sysconf((_SC_NPROCESSORS_ONLN));
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#elif defined(_SC_NPROC_ONLN)
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return sysconf((_SC_NPROC_ONLN));
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#else
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return (0);
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#endif
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}
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#endif /* HAVE_SYSCONF */
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#ifdef __hpux
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#include <sys/pstat.h>
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static inline int
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hpux_ncpus(void) {
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struct pst_dynamic psd;
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if (pstat_getdynamic(&psd, sizeof(psd), 1, 0) != -1)
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return (psd.psd_proc_cnt);
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else
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return (0);
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}
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#endif /* __hpux */
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unsigned int
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isc_os_ncpus(void) {
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long ncpus = 0;
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#ifdef __hpux
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ncpus = hpux_ncpus();
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#elif defined(HAVE_SYSCONF)
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ncpus = sysconf_ncpus();
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#endif
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if (ncpus <= 0)
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ncpus = 1;
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return ((unsigned int)ncpus);
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}
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