1 /* Copyright (C) 2002-2016 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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.
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.
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 <http://www.gnu.org/licenses/>. */
23 #include <nptl/pthreadP.h>
29 struct pthread
*pd
= THREAD_SELF
;
30 pid_t pid
= THREAD_GETMEM (pd
, pid
);
31 pid_t selftid
= THREAD_GETMEM (pd
, tid
);
34 /* This system call is not supposed to fail. */
35 #ifdef INTERNAL_SYSCALL
36 INTERNAL_SYSCALL_DECL (err
);
37 selftid
= INTERNAL_SYSCALL (gettid
, err
, 0);
39 selftid
= INLINE_SYSCALL (gettid
, 0);
41 THREAD_SETMEM (pd
, tid
, selftid
);
43 /* We do not set the PID field in the TID here since we might be
44 called from a signal handler while the thread executes fork. */
48 /* raise is an async-safe function. It could be called while the
49 fork/vfork function temporarily invalidated the PID field. Adjust for
51 if (__glibc_unlikely (pid
<= 0))
52 pid
= (pid
& INT_MAX
) == 0 ? selftid
: -pid
;
54 return INLINE_SYSCALL (tgkill
, 3, pid
, selftid
, sig
);
56 libc_hidden_def (raise
)
57 weak_alias (raise
, gsignal
)