htl/pt-testcancel.c

   1 /* Add an explicit cancelation point.
   2    Copyright (C) 2002-2019 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 #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 }