1  /* Set the cancel state for the calling thread.
       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  
      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);