1  /* Signal handling function for threaded programs.  Generic version.
       2     Copyright (C) 2000-2023 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  #ifndef _BITS_SIGTHREAD_H
      20  #define _BITS_SIGTHREAD_H	1
      21  
      22  #if !defined _SIGNAL_H && !defined _PTHREAD_H
      23  # error "Never include this file directly.  Use <signal.h> instead"
      24  #endif
      25  
      26  /* Modify the signal mask for the calling thread.  The arguments have the
      27     same meaning as for sigprocmask; in fact, this and sigprocmask might be
      28     the same function.  We declare this the same on all platforms, since it
      29     doesn't use any thread-related types.  */
      30  extern int pthread_sigmask (int __how, const __sigset_t *__newmask,
      31  			    __sigset_t *__oldmask) __THROW;
      32  
      33  
      34  #endif	/* bits/sigthread.h */