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dff8da6b | 1 | /* Copyright (C) 2004-2024 Free Software Foundation, Inc. |
ffdd5e50 | 2 | This file is part of the GNU C Library. |
ffdd5e50 UD |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public License as | |
6 | published by the Free Software Foundation; either version 2.1 of the | |
7 | License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 | 15 | License along with the GNU C Library; see the file COPYING.LIB. If |
5a82c748 | 16 | not, see <https://www.gnu.org/licenses/>. */ |
ffdd5e50 UD |
17 | |
18 | #ifndef _AIO_MISC_H | |
19 | # include_next <aio_misc.h> | |
88bce79e UD |
20 | # include <limits.h> |
21 | # include <pthread.h> | |
ffdd5e50 UD |
22 | # include <signal.h> |
23 | # include <sysdep.h> | |
ffdd5e50 UD |
24 | |
25 | # define aio_start_notify_thread __aio_start_notify_thread | |
26 | # define aio_create_helper_thread __aio_create_helper_thread | |
27 | ||
28 | extern inline void | |
29 | __aio_start_notify_thread (void) | |
30 | { | |
31 | sigset_t ss; | |
32 | sigemptyset (&ss); | |
f26d456b AZ |
33 | INTERNAL_SYSCALL_CALL (rt_sigprocmask, SIG_SETMASK, &ss, NULL, |
34 | __NSIG_BYTES); | |
ffdd5e50 UD |
35 | } |
36 | ||
37 | extern inline int | |
88bce79e UD |
38 | __aio_create_helper_thread (pthread_t *threadp, void *(*tf) (void *), |
39 | void *arg) | |
ffdd5e50 UD |
40 | { |
41 | pthread_attr_t attr; | |
42 | ||
43 | /* Make sure the thread is created detached. */ | |
d12506b2 FW |
44 | __pthread_attr_init (&attr); |
45 | __pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); | |
ffdd5e50 UD |
46 | |
47 | /* The helper thread needs only very little resources. */ | |
d12506b2 | 48 | __pthread_attr_setstacksize (&attr, __pthread_get_minstack (&attr)); |
ffdd5e50 UD |
49 | |
50 | /* Block all signals in the helper thread. To do this thoroughly we | |
51 | temporarily have to block all signals here. */ | |
52 | sigset_t ss; | |
53 | sigset_t oss; | |
54 | sigfillset (&ss); | |
f26d456b AZ |
55 | INTERNAL_SYSCALL_CALL (rt_sigprocmask, SIG_SETMASK, &ss, &oss, |
56 | __NSIG_BYTES); | |
ffdd5e50 | 57 | |
d12506b2 | 58 | int ret = __pthread_create (threadp, &attr, tf, arg); |
ffdd5e50 UD |
59 | |
60 | /* Restore the signal mask. */ | |
f26d456b AZ |
61 | INTERNAL_SYSCALL_CALL (rt_sigprocmask, SIG_SETMASK, &oss, NULL, |
62 | __NSIG_BYTES); | |
ffdd5e50 | 63 | |
d12506b2 | 64 | __pthread_attr_destroy (&attr); |
ffdd5e50 | 65 | return ret; |
88bce79e | 66 | } |
ffdd5e50 | 67 | #endif |