glibc/sysdeps/unix/sysv/linux/timer_gettime.c

71 lines
2.2 KiB
C

/* Copyright (C) 2003-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, see <https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <stdlib.h>
#include <time.h>
#include <sysdep.h>
#include <kernel-features.h>
#include "kernel-posix-timers.h"
int
__timer_gettime64 (timer_t timerid, struct __itimerspec64 *value)
{
struct timer *kt = (struct timer *) timerid;
#ifdef __ASSUME_TIME64_SYSCALLS
# ifndef __NR_timer_gettime64
# define __NR_timer_gettime64 __NR_timer_gettime
# endif
return INLINE_SYSCALL_CALL (timer_gettime64, kt->ktimerid, value);
#else
# ifdef __NR_timer_gettime64
int ret = INLINE_SYSCALL_CALL (timer_gettime64, kt->ktimerid, value);
if (ret == 0 || errno != ENOSYS)
return ret;
# endif
struct itimerspec its32;
int retval = INLINE_SYSCALL_CALL (timer_gettime, kt->ktimerid, &its32);
if (retval == 0)
{
value->it_interval = valid_timespec_to_timespec64 (its32.it_interval);
value->it_value = valid_timespec_to_timespec64 (its32.it_value);
}
return retval;
#endif
}
#if __TIMESIZE != 64
int
__timer_gettime (timer_t timerid, struct itimerspec *value)
{
struct __itimerspec64 its64;
int retval = __timer_gettime64 (timerid, &its64);
if (retval == 0)
{
value->it_interval = valid_timespec64_to_timespec (its64.it_interval);
value->it_value = valid_timespec64_to_timespec (its64.it_value);
}
return retval;
}
#endif
weak_alias (__timer_gettime, timer_gettime)
libc_hidden_def (timer_gettime)