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/* Return run-time value of CLK_TCK for Hurd.
Copyright (C) 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <time.h>
#include <unistd.h>
#include <mach.h>
#include <mach/host_info.h>
#ifndef SYSTEM_CLK_TCK
# define SYSTEM_CLK_TCK 100
#endif
/* Return frequency of times(). */
int
__getclktck ()
{
struct host_sched_info hsi;
mach_msg_type_number_t count;
error_t err;
count = HOST_SCHED_INFO_COUNT;
err = __host_info (__mach_task_self (), HOST_SCHED_INFO,
(host_info_t) &hsi, &count);
if (err)
return SYSTEM_CLK_TCK;
return hsi.min_quantum;
}
/* Before glibc 2.2, the Hurd actually did this differently, so we
need to keep a compatibility symbol. */
#include <shlib-compat.h>
#if SHLIB_COMPAT (libc, GLIBC_2_1_1, GLIBC_2_2)
compat_symbol (libc, __getclktck, __libc_clk_tck, GLIBC_2_1_1);
#endif
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