1 | /* Cancel a thread. |
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 <hurd/signal.h> |
21 | |
22 | #include <pt-internal.h> |
23 | #include <pthreadP.h> |
24 | |
25 | static void |
26 | call_exit (void) |
27 | { |
28 | __pthread_exit (value: 0); |
29 | } |
30 | |
31 | int |
32 | __pthread_do_cancel (struct __pthread *p) |
33 | { |
34 | mach_port_t ktid; |
35 | int me; |
36 | |
37 | assert (p->cancel_pending == 1); |
38 | assert (p->cancel_state == PTHREAD_CANCEL_ENABLE); |
39 | |
40 | __pthread_mutex_unlock (mutex: &p->cancel_lock); |
41 | |
42 | ktid = __mach_thread_self (); |
43 | me = p->kernel_thread == ktid; |
44 | __mach_port_deallocate (__mach_task_self (), ktid); |
45 | |
46 | if (me) |
47 | call_exit (); |
48 | else |
49 | { |
50 | error_t err; |
51 | struct hurd_sigstate *ss = _hurd_thread_sigstate (p->kernel_thread); |
52 | |
53 | __spin_lock (&ss->critical_section_lock); |
54 | __spin_lock (&ss->lock); |
55 | |
56 | err = __thread_suspend (p->kernel_thread); |
57 | assert_perror (err); |
58 | |
59 | __spin_unlock (&ss->lock); |
60 | |
61 | err = __thread_abort (p->kernel_thread); |
62 | assert_perror (err); |
63 | |
64 | err = __thread_set_pcsptp (p->kernel_thread, |
65 | 1, (void *) call_exit, 0, 0, 0, 0); |
66 | assert_perror (err); |
67 | |
68 | err = __thread_resume (p->kernel_thread); |
69 | assert_perror (err); |
70 | |
71 | _hurd_critical_section_unlock (ss); |
72 | } |
73 | |
74 | return 0; |
75 | } |
76 | |