include/bits/signal_ext.h

   1 /* System-specific extensions of <signal.h>, Linux version.
   2    Copyright (C) 2019-2021 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 #ifndef _SIGNAL_H
  20 # error "Never include <bits/signal_ext.h> directly; use <signal.h> instead."
  21 #endif
  22
  23 #ifdef __USE_GNU
  24
  25 /* Send SIGNAL to the thread TID in the thread group (process)
  26    identified by TGID.  This function behaves like kill, but also
  27    fails with ESRCH if the specified TID does not belong to the
  28    specified thread group.  */
  29 extern int tgkill (__pid_t __tgid, __pid_t __tid, int __signal);
  30
  31 #endif /* __USE_GNU */