glibc/nptl/sem_clockwait.c

/* sem_clockwait -- wait on a semaphore with timeout using the specified
   clock.

   Copyright (C) 2019-2021 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 "semaphoreP.h"
#include "sem_waitcommon.c"

int
___sem_clockwait64 (sem_t *sem, clockid_t clockid,
                   const struct __timespec64 *abstime)
{
  /* Check that supplied clockid is one we support, even if we don't end up
     waiting.  */
  if (!futex_abstimed_supported_clockid (clockid))
    {
      __set_errno (EINVAL);
      return -1;
    }

  if (! valid_nanoseconds (abstime->tv_nsec))
    {
      __set_errno (EINVAL);
      return -1;
    }

  if (__new_sem_wait_fast ((struct new_sem *) sem, 0) == 0)
    return 0;
  else
    return __new_sem_wait_slow64 ((struct new_sem *) sem, clockid, abstime);
}

#if __TIMESIZE == 64
strong_alias (___sem_clockwait64, ___sem_clockwait)
#else /* __TIMESPEC64 != 64 */
strong_alias (___sem_clockwait64, __sem_clockwait64)
libc_hidden_def (__sem_clockwait64)

int
___sem_clockwait (sem_t *sem, clockid_t clockid, const struct timespec *abstime)
{
  struct __timespec64 ts64 = valid_timespec_to_timespec64 (*abstime);

  return __sem_clockwait64 (sem, clockid, &ts64);
}
#endif /* __TIMESPEC64 != 64 */
versioned_symbol (libc, ___sem_clockwait, sem_clockwait, GLIBC_2_34);
#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_30, GLIBC_2_34)
compat_symbol (libpthread, ___sem_clockwait, sem_clockwait, GLIBC_2_30);
#endif