nptl/pthread_rwlock_rdlock.c

   1 /* Copyright (C) 2003-2020 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include "pthread_rwlock_common.c"
  20
  21 /* See pthread_rwlock_common.c.  */
  22 int
  23 __pthread_rwlock_rdlock (pthread_rwlock_t *rwlock)
  24 {
  25   LIBC_PROBE (rdlock_entry, 1, rwlock);
  26
  27   int result = __pthread_rwlock_rdlock_full64 (rwlock, CLOCK_REALTIME, NULL);
  28   LIBC_PROBE (rdlock_acquire_read, 1, rwlock);
  29   return result;
  30 }
  31
  32 weak_alias (__pthread_rwlock_rdlock, pthread_rwlock_rdlock)
  33 hidden_def (__pthread_rwlock_rdlock)