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/* Copyright (C) 2005-2019 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 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; if not, see
<https://www.gnu.org/licenses/>. */
#include <time.h>
#include <sysdep.h>
#ifdef HAVE_GETTIMEOFDAY_VSYSCALL
# define HAVE_VSYSCALL
#endif
#include <sysdep-vdso.h>
static int
__gettimeofday_syscall (struct timeval *tv, struct timezone *tz)
{
if (__glibc_unlikely (tz != 0))
memset (tz, 0, sizeof *tz);
return INLINE_VSYSCALL (gettimeofday, 2, tv, tz);
}
#ifdef SHARED
# include <dl-vdso.h>
# include <libc-vdso.h>
# define INIT_ARCH() \
void *vdso_gettimeofday = get_vdso_symbol (HAVE_GETTIMEOFDAY_VSYSCALL)
/* If the vDSO is not available we fall back syscall. */
libc_ifunc (__gettimeofday,
vdso_gettimeofday
? VDSO_IFUNC_RET (vdso_gettimeofday)
: (void *) __gettimeofday_syscall);
#else
int
__gettimeofday (struct timeval *tv, struct timezone *tz)
{
return __gettimeofday_syscall (tv, tz);
}
#endif
weak_alias (__gettimeofday, gettimeofday)
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