1  /* Add an explicit cancelation point.
       2     Copyright (C) 2002-2023 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 <pthread.h>
      20  
      21  #include <pt-internal.h>
      22  #include <pthreadP.h>
      23  
      24  void
      25  __pthread_testcancel (void)
      26  {
      27    struct __pthread *p = _pthread_self ();
      28    int cancelled;
      29  
      30    __pthread_mutex_lock (&p->cancel_lock);
      31    cancelled = (p->cancel_state == PTHREAD_CANCEL_ENABLE) && p->cancel_pending;
      32    __pthread_mutex_unlock (&p->cancel_lock);
      33  
      34    if (cancelled)
      35      __pthread_exit (PTHREAD_CANCELED);
      36  }
      37  strong_alias (__pthread_testcancel, pthread_testcancel)