1  /* Copyright (C) 2002-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include "pthreadP.h"
      19  #include <shlib-compat.h>
      20  
      21  int
      22  __pthread_tryjoin_np (pthread_t threadid, void **thread_return)
      23  {
      24    /* Return right away if the thread hasn't terminated yet.  */
      25    struct pthread *pd = (struct pthread *) threadid;
      26    if (pd->tid != 0)
      27      return EBUSY;
      28  
      29    /* If pd->tid == 0 then lll_wait_tid will not block on futex
      30       operation.  */
      31    return __pthread_clockjoin_ex (threadid, thread_return, 0 /* Ignored */,
      32  				 NULL, false);
      33  }
      34  versioned_symbol (libc, __pthread_tryjoin_np, pthread_tryjoin_np, GLIBC_2_34);
      35  
      36  #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_34)
      37  compat_symbol (libc, __pthread_tryjoin_np, pthread_tryjoin_np, GLIBC_2_3_3);
      38  #endif