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/* time -- Get number of seconds since Epoch. Linux version.
Copyright (C) 2020 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/>. */
/* Optimize the function call by setting the PLT directly to vDSO symbol. */
#ifdef USE_IFUNC_TIME
# include <time.h>
# include <sysdep.h>
# include <sysdep-vdso.h>
#ifdef SHARED
# include <dl-vdso.h>
# include <libc-vdso.h>
static time_t
time_syscall (time_t *t)
{
return INLINE_SYSCALL_CALL (time, t);
}
# undef INIT_ARCH
# define INIT_ARCH() \
void *vdso_time = dl_vdso_vsym (HAVE_TIME_VSYSCALL);
libc_ifunc (time,
vdso_time ? VDSO_IFUNC_RET (vdso_time)
: (void *) time_syscall);
# else
time_t
time (time_t *t)
{
return INLINE_VSYSCALL (time, 1, t);
}
# endif /* !SHARED */
#else /* USE_IFUNC_TIME */
# include <time/time.c>
#endif
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