1 | /* Initialize the signal state. Hurd on Mach version. |
2 | Copyright (C) 2002-2024 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 | #include <pthread.h> |
20 | #include <pt-internal.h> |
21 | #include <hurd/signal.h> |
22 | |
23 | error_t |
24 | __pthread_sigstate_init (struct __pthread *thread) |
25 | { |
26 | static int do_init_global; |
27 | |
28 | /* Mark the thread as a global signal receiver so as to conform with |
29 | the pthread semantics. However, we must be careful. The first |
30 | pthread created is the main thread, during libpthread initialization. |
31 | We must not mark it, otherwise the sigprocmask call in |
32 | __pthread_create would try to access _hurd_global_sigstate, |
33 | which is not initialized yet. When glibc runs _hurdsig_init later |
34 | on, the message thread is created, which must not be marked either. */ |
35 | if (do_init_global) |
36 | { |
37 | struct hurd_sigstate *ss = _hurd_thread_sigstate (thread->kernel_thread); |
38 | _hurd_sigstate_set_global_rcv (ss); |
39 | } |
40 | else if (GL (dl_pthread_num_threads) >= 2) |
41 | do_init_global = 1; |
42 | |
43 | return 0; |
44 | } |
45 | |