nptl/pthread_rwlock_timedwrlock.c

   1 /* Copyright (C) 2003-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include "pthread_rwlock_common.c"
  20
  21 /* See pthread_rwlock_common.c.  */
  22 int
  23 pthread_rwlock_timedwrlock (pthread_rwlock_t *rwlock,
  24     const struct timespec *abstime)
  25 {
  26   /* Make sure the passed in timeout value is valid.  Note that the previous
  27      implementation assumed that this check *must* not be performed if there
  28      would in fact be no blocking; however, POSIX only requires that "the
  29      validity of the abstime parameter need not be checked if the lock can be
  30      immediately acquired" (i.e., we need not but may check it).  */
  31   /* ??? Just move this to __pthread_rwlock_wrlock_full?  */
  32   if (__glibc_unlikely (abstime->tv_nsec >= 1000000000
  33       || abstime->tv_nsec < 0))
  34     return EINVAL;
  35
  36   return __pthread_rwlock_wrlock_full (rwlock, abstime);
  37 }