sysdeps/mips/nptl/bits/struct_rwlock.h

   1 /* MIPS internal rwlock struct definitions.
   2    Copyright (C) 2019-2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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 #ifndef _RWLOCK_INTERNAL_H
  20 #define _RWLOCK_INTERNAL_H
  21
  22 struct __pthread_rwlock_arch_t
  23 {
  24   unsigned int __readers;
  25   unsigned int __writers;
  26   unsigned int __wrphase_futex;
  27   unsigned int __writers_futex;
  28   unsigned int __pad3;
  29   unsigned int __pad4;
  30 #if _MIPS_SIM == _ABI64
  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 # else
  39 # if __BYTE_ORDER == __BIG_ENDIAN
  40   unsigned char __pad1;
  41   unsigned char __pad2;
  42   unsigned char __shared;
  43   /* FLAGS must stay at this position in the structure to maintain
  44      binary compatibility.  */
  45   unsigned char __flags;
  46 # else
  47   /* FLAGS must stay at this position in the structure to maintain
  48      binary compatibility.  */
  49   unsigned char __flags;
  50   unsigned char __shared;
  51   unsigned char __pad1;
  52   unsigned char __pad2;
  53 # endif
  54   int __cur_writer;
  55 #endif
  56 };
  57
  58 #if _MIPS_SIM == _ABI64
  59 # define __PTHREAD_RWLOCK_INITIALIZER(__flags) \
  60   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, __flags
  61 #else
  62 # if __BYTE_ORDER == __BIG_ENDIAN
  63 #  define __PTHREAD_RWLOCK_INITIALIZER(__flags) \
  64   0, 0, 0, 0, 0, 0, 0, 0, 0, __flags, 0
  65 # else
  66 #  define __PTHREAD_RWLOCK_INITIALIZER(__flags) \
  67   0, 0, 0, 0, 0, 0, __flags, 0, 0, 0, 0
  68 # endif
  69 #endif
  70
  71 #endif