htl/pt-setcancelstate.c

   1 /* Set the cancel state for the calling thread.
   2    Copyright (C) 2002-2021 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
  23 int
  24 __pthread_setcancelstate (int state, int *oldstate)
  25 {
  26   struct __pthread *p = _pthread_self ();
  27
  28   switch (state)
  29     {
  30     default:
  31       return EINVAL;
  32     case PTHREAD_CANCEL_ENABLE:
  33     case PTHREAD_CANCEL_DISABLE:
  34       break;
  35     }
  36
  37   __pthread_mutex_lock (&p->cancel_lock);
  38   if (oldstate != NULL)
  39     *oldstate = p->cancel_state;
  40   p->cancel_state = state;
  41   __pthread_mutex_unlock (&p->cancel_lock);
  42
  43   return 0;
  44 }
  45
  46 weak_alias (__pthread_setcancelstate, pthread_setcancelstate);