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Linux: Add the tgkill function

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The tgkill function is sometimes used in crash handlers.

<bits/signal_ext.h> follows the same approach as <bits/unistd_ext.h>
(which was added for the gettid system call wrapper).

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Florian Weimer
2019-05-14 21:35:09 +02:00
parent 6807f47b81
commit 04b261bdc1
38 changed files with 282 additions and 4 deletions
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31
sysdeps/unix/sysv/linux/bits/signal_ext.h Normal file
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/* System-specific extensions of <signal.h>, Linux version.
Copyright (C) 2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _SIGNAL_H
# error "Never include <bits/signal_ext.h> directly; use <signal.h> instead."
#endif
#ifdef __USE_GNU
/* Send SIGNAL to the thread TID in the thread group (process)
identified by TGID. This function behaves like kill, but also
fails with ESRCH if the specified TID does not belong to the
specified thread group. */
extern int tgkill (__pid_t __tgid, __pid_t __tid, int __signal);
#endif /* __USE_GNU */