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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997-2009 Oracle. All rights reserved.
*
* $Id$
*/
#include "db_config.h"
#include "db_int.h"
#ifdef HAVE_SYSTEM_INCLUDE_FILES
#if defined(HAVE_PSTAT_GETDYNAMIC)
#include <sys/pstat.h>
#endif
#endif
/*
* __os_cpu_count --
* Return the number of CPUs.
*
* PUBLIC: u_int32_t __os_cpu_count __P((void));
*/
u_int32_t
__os_cpu_count()
{
#if defined(HAVE_PSTAT_GETDYNAMIC)
/*
* HP/UX.
*/
struct pst_dynamic psd;
return ((u_int32_t)pstat_getdynamic(&psd,
sizeof(psd), (size_t)1, 0) == -1 ? 1 : psd.psd_proc_cnt);
#elif defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
/*
* Solaris, Linux.
*/
long nproc;
nproc = sysconf(_SC_NPROCESSORS_ONLN);
return ((u_int32_t)(nproc > 1 ? nproc : 1));
#else
return (1);
#endif
}
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