1  /* pthread_spin_init -- initialize a spin lock.  Generic version.
       2     Copyright (C) 2003-2023 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     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include "pthreadP.h"
      20  #include <shlib-compat.h>
      21  
      22  int
      23  __pthread_spin_init (pthread_spinlock_t *lock, int pshared)
      24  {
      25    /* Relaxed MO is fine because this is an initializing store.  */
      26    atomic_store_relaxed (lock, 0);
      27    return 0;
      28  }
      29  versioned_symbol (libc, __pthread_spin_init, pthread_spin_init, GLIBC_2_34);
      30  
      31  #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_2, GLIBC_2_34)
      32  compat_symbol (libpthread, __pthread_spin_init, pthread_spin_init, GLIBC_2_2);
      33  #endif