mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-20 03:50:07 +00:00
3b5c1b57d3
* sysdeps/unix/i386/i586/clock_getres.c: Removed. * sysdeps/unix/i386/i586/clock_gettime.c: Removed. * sysdeps/unix/i386/i586/clock_nanosleep.c: Removed. * sysdeps/unix/i386/i586/clock_settime.c: Removed. * sysdeps/unix/i386/i586/cpuclock-init.h: Removed. * sysdeps/generic/cpuclock-init.h: Removed. * sysdeps/unix/i386/i686/Implies: Removed. * sysdeps/unix/i386/i686/tempname.c: Removed. * sysdeps/i386/i686/Versions: New file. * sysdeps/unix/i386/i586/Versions: Removed. * sysdeps/posix/clock_getres.c: If HP_TIMING_AVAIL is nonzero handle CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID. * sysdeps/unix/clock_gettime.c: Likewise. * sysdeps/unix/clock_nanosleep.c: Likewise. * sysdeps/unix/clock_settime.c: Likewise. * sysdeps/posix/tempname.c: Is HP_TIMING_AVAIL is nonzero define RANDOM_BITS use CPU clock. * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/bits/time.h: New file. * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9b/bits/time.h: New file. * sysdeps/unix/sysv/linux/sparc/sparc64/bits/time.h: New file. * sysdeps/sparc/Versions: New file. * elf/dl-support.c: Don't use cpuclock-init.h definitions, use hp-timing.h definitions. * sysdeps/generic/dl-sysdep.c: Likewise. * include/libc-internal.h: Include hp-timing.h. Use hp_timing_t in __get_clockfreq prototype. * sysdeps/unix/sysv/linux/i386/get_clockfreq.c (__get_clockfreq): Use hp_timing_t type. * sysdeps/unix/sysv/linux/ia64/get_clockfreq.c: New file.
95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
/* Copyright (C) 1999, 2000, 2001 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 <stdint.h>
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
#include <sys/param.h>
|
|
#include <libc-internal.h>
|
|
|
|
|
|
#if HP_TIMING_AVAIL
|
|
/* Clock frequency of the processor. */
|
|
static long int nsec;
|
|
#endif
|
|
|
|
|
|
/* Get resolution of clock. */
|
|
int
|
|
clock_getres (clockid_t clock_id, struct timespec *res)
|
|
{
|
|
int retval = -1;
|
|
|
|
switch (clock_id)
|
|
{
|
|
case CLOCK_REALTIME:
|
|
{
|
|
long int clk_tck = sysconf (_SC_CLK_TCK);
|
|
|
|
if (__builtin_expect (clk_tck != -1, 1))
|
|
{
|
|
/* This implementation assumes that the realtime clock has a
|
|
resolution higher than 1 second. This is the case for any
|
|
reasonable implementation. */
|
|
res->tv_sec = 0;
|
|
res->tv_nsec = 1000000000 / clk_tck;
|
|
|
|
retval = 0;
|
|
}
|
|
}
|
|
break;
|
|
|
|
#if HP_TIMING_AVAIL
|
|
case CLOCK_PROCESS_CPUTIME_ID:
|
|
case CLOCK_THREAD_CPUTIME_ID:
|
|
{
|
|
if (__builtin_expect (nsec == 0, 0))
|
|
{
|
|
hp_timing_t freq;
|
|
|
|
/* This can only happen if we haven't initialized the `freq'
|
|
variable yet. Do this now. We don't have to protect this
|
|
code against multiple execution since all of them should
|
|
lead to the same result. */
|
|
freq = __get_clockfreq ();
|
|
if (__builtin_expect (freq == 0, 0))
|
|
/* Something went wrong. */
|
|
break;
|
|
|
|
nsec = MAX (UINT64_C (1000000000) / freq, 1);
|
|
}
|
|
|
|
/* File in the values. The seconds are always zero (unless we
|
|
have a 1Hz machine). */
|
|
res->tv_sec = 0;
|
|
res->tv_nsec = nsec;
|
|
|
|
retval = 0;
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
__set_errno (EINVAL);
|
|
break;
|
|
}
|
|
|
|
return retval;
|
|
}
|