1  /* MIPS internal mutex struct definitions.
       2     Copyright (C) 2019-2023 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