sysdeps/mips/nptl/bits/struct_mutex.h

   1 /* MIPS internal mutex struct definitions.
   2    Copyright (C) 2019-2020 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 _THREAD_MUTEX_INTERNAL_H
  20 #define _THREAD_MUTEX_INTERNAL_H 1
  21
  22 struct __pthread_mutex_s
  23 {
  24   int __lock;
  25   unsigned int __count;
  26   int __owner;
  27 #if _MIPS_SIM == _ABI64
  28   unsigned int __nusers;
  29 #endif
  30   /* KIND must stay at this position in the structure to maintain
  31      binary compatibility with static initializers.  */
  32   int __kind;
  33 #if _MIPS_SIM == _ABI64
  34   int __spins;
  35   __pthread_list_t __list;
  36 # define __PTHREAD_MUTEX_HAVE_PREV      1
  37 #else
  38   unsigned int __nusers;
  39   __extension__ union
  40   {
  41     int __spins;
  42     __pthread_slist_t __list;
  43   };
  44 # define __PTHREAD_MUTEX_HAVE_PREV      0
  45 #endif
  46 };
  47
  48 #if _MIPS_SIM == _ABI64
  49 # define __PTHREAD_MUTEX_INITIALIZER(__kind) \
  50   0, 0, 0, 0, __kind, 0, { 0, 0 }
  51 #else
  52 # define __PTHREAD_MUTEX_INITIALIZER(__kind) \
  53   0, 0, 0, __kind, 0, { 0 }
  54 #endif
  55
  56 #endif