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| author | trhodes <trhodes@FreeBSD.org> | 2004-09-19 01:30:24 +0000 |
|---|---|---|
| committer | trhodes <trhodes@FreeBSD.org> | 2004-09-19 01:30:24 +0000 |
| commit | 06246360f70ba2ce65a63d5c52289cd33256bc99 (patch) | |
| tree | 97706b7f62557da0a2539b026e5cf66008ddf8c6 /contrib/bind9/lib/isc/unix/os.c | |
| download | FreeBSD-src-06246360f70ba2ce65a63d5c52289cd33256bc99.zip FreeBSD-src-06246360f70ba2ce65a63d5c52289cd33256bc99.tar.gz | |
Vender import of BIND 9.3.0rc4.
Diffstat (limited to 'contrib/bind9/lib/isc/unix/os.c')
| -rw-r--r-- | contrib/bind9/lib/isc/unix/os.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/contrib/bind9/lib/isc/unix/os.c b/contrib/bind9/lib/isc/unix/os.c new file mode 100644 index 0000000..0838e12 --- /dev/null +++ b/contrib/bind9/lib/isc/unix/os.c @@ -0,0 +1,92 @@ +/* + * Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 2000, 2001 Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, + * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE + * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +/* $Id: os.c,v 1.11.12.4 2004/05/18 01:39:20 marka Exp $ */ + +#include <config.h> + +#include <isc/os.h> + + +#ifdef HAVE_SYSCONF + +#include <unistd.h> + +static inline long +sysconf_ncpus(void) { +#if defined(_SC_NPROCESSORS_ONLN) + return sysconf((_SC_NPROCESSORS_ONLN)); +#elif defined(_SC_NPROC_ONLN) + return sysconf((_SC_NPROC_ONLN)); +#else + return (0); +#endif +} +#endif /* HAVE_SYSCONF */ + + +#ifdef __hpux + +#include <sys/pstat.h> + +static inline int +hpux_ncpus(void) { + struct pst_dynamic psd; + if (pstat_getdynamic(&psd, sizeof(psd), 1, 0) != -1) + return (psd.psd_proc_cnt); + else + return (0); +} + +#endif /* __hpux */ + +#if defined(HAVE_SYS_SYSCTL_H) && defined(HAVE_SYSCTLBYNAME) +#include <sys/types.h> /* for FreeBSD */ +#include <sys/param.h> /* for NetBSD */ +#include <sys/sysctl.h> + +static int +sysctl_ncpus(void) { + int ncpu, result; + size_t len; + + len = sizeof(ncpu); + result = sysctlbyname("hw.ncpu", &ncpu, &len , 0, 0); + if (result != -1) + return (ncpu); + return (0); +} +#endif + +unsigned int +isc_os_ncpus(void) { + long ncpus = 0; + +#ifdef __hpux + ncpus = hpux_ncpus(); +#elif defined(HAVE_SYSCONF) + ncpus = sysconf_ncpus(); +#endif +#if defined(HAVE_SYS_SYSCTL_H) && defined(HAVE_SYSCTLBYNAME) + if (ncpus <= 0) + ncpus = sysctl_ncpus(); +#endif + if (ncpus <= 0) + ncpus = 1; + + return ((unsigned int)ncpus); +} |
