1 | /* raise.c - Generic raise implementation. |
2 | Copyright (C) 2008-2022 Free Software Foundation, Inc. |
3 | |
4 | This file is part of the GNU Hurd. |
5 | |
6 | The GNU Hurd is free software; you can redistribute it and/or |
7 | modify it under the terms of the GNU Lesser General Public License |
8 | as published by the Free Software Foundation; either version 3 of |
9 | the License, or (at your option) any later version. |
10 | |
11 | The GNU Hurd is distributed in the hope that it will be useful, but |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | Lesser General Public License for more details. |
15 | |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with this program. If not, see |
18 | <https://www.gnu.org/licenses/>. */ |
19 | |
20 | #include <ldsodefs.h> |
21 | #include <pthreadP.h> |
22 | #include <signal.h> |
23 | #include <unistd.h> |
24 | |
25 | #pragma weak __pthread_kill |
26 | #pragma weak __pthread_self |
27 | #pragma weak __pthread_threads |
28 | |
29 | #ifndef SHARED |
30 | #pragma weak _dl_pthread_threads |
31 | #endif |
32 | |
33 | int |
34 | raise (int signo) |
35 | { |
36 | /* According to POSIX, if we implement threads (and we do), then |
37 | "the effect of the raise() function shall be equivalent to |
38 | calling: pthread_kill(pthread_self(), sig);" */ |
39 | |
40 | if (__pthread_kill != NULL && GL (dl_pthread_threads) != NULL) |
41 | { |
42 | int err; |
43 | err = __pthread_kill (__pthread_self (), signo); |
44 | if (err) |
45 | { |
46 | errno = err; |
47 | return -1; |
48 | } |
49 | return 0; |
50 | } |
51 | else |
52 | return __kill (__getpid (), signo); |
53 | } |
54 | |
55 | libc_hidden_def (raise) |
56 | weak_alias (raise, gsignal) |
57 | |