sysdeps/ia64/nptl/bits/struct_rwlock.h

   1 /* IA64 internal rwlock struct definitions.
   2    Copyright (C) 2019-2024 Free Software Foundation, Inc.
   3
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _RWLOCK_INTERNAL_H
  21 #define _RWLOCK_INTERNAL_H
  22
  23 struct __pthread_rwlock_arch_t
  24 {
  25   unsigned int __readers;
  26   unsigned int __writers;
  27   unsigned int __wrphase_futex;
  28   unsigned int __writers_futex;
  29   unsigned int __pad3;
  30   unsigned int __pad4;
  31   int __cur_writer;
  32   int __shared;
  33   unsigned long int __pad1;
  34   unsigned long int __pad2;
  35   /* FLAGS must stay at this position in the structure to maintain
  36      binary compatibility.  */
  37   unsigned int __flags;
  38 };
  39
  40 #define __PTHREAD_RWLOCK_INITIALIZER(__flags) \
  41   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, __flags
  42
  43 #endif