nptl/sem_clockwait.c

   1 /* sem_clockwait -- wait on a semaphore with timeout using the specified
   2    clock.
   3
   4    Copyright (C) 2019-2020 Free Software Foundation, Inc.
   5    This file is part of the GNU C Library.
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Lesser General Public
   9    License as published by the Free Software Foundation; either
  10    version 2.1 of the License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with the GNU C Library; if not, see
  19    <https://www.gnu.org/licenses/>.  */
  20
  21 #include <time.h>
  22 #include "semaphoreP.h"
  23 #include "sem_waitcommon.c"
  24
  25 int
  26 __sem_clockwait64 (sem_t *sem, clockid_t clockid,
  27                    const struct __timespec64 *abstime)
  28 {
  29   /* Check that supplied clockid is one we support, even if we don't end up
  30      waiting.  */
  31   if (!futex_abstimed_supported_clockid (clockid))
  32     {
  33       __set_errno (EINVAL);
  34       return -1;
  35     }
  36
  37   if (! valid_nanoseconds (abstime->tv_nsec))
  38     {
  39       __set_errno (EINVAL);
  40       return -1;
  41     }
  42
  43   if (__new_sem_wait_fast ((struct new_sem *) sem, 0) == 0)
  44     return 0;
  45   else
  46     return __new_sem_wait_slow64 ((struct new_sem *) sem, clockid, abstime);
  47 }
  48
  49 #if __TIMESIZE != 64
  50 libpthread_hidden_def (__sem_clockwait64)
  51
  52 int
  53 __sem_clockwait (sem_t *sem, clockid_t clockid, const struct timespec *abstime)
  54 {
  55   struct __timespec64 ts64 = valid_timespec_to_timespec64 (*abstime);
  56
  57   return __sem_clockwait64 (sem, clockid, &ts64);
  58 }
  59 #endif
  60 weak_alias (__sem_clockwait, sem_clockwait)