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1 | /* Initialize the signal state. Hurd on Mach version. | |
2 | Copyright (C) 2002-2019 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 | (void) ss; | |
39 | } | |
40 | else if (__pthread_num_threads >= 2) | |
41 | do_init_global = 1; | |
42 | ||
43 | return 0; | |
44 | } |