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59b7fe99 | 1 | /* Set the cancel type during blocking calls. |
581c785b | 2 | Copyright (C) 2020-2022 Free Software Foundation, Inc. |
59b7fe99 ST |
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 <pthreadP.h> | |
21 | #include <pt-internal.h> | |
22 | ||
23 | int __pthread_enable_asynccancel (void) | |
24 | { | |
25 | struct __pthread *p = _pthread_self (); | |
26 | int oldtype; | |
27 | ||
70ff58ce ST |
28 | if (___pthread_self == NULL) |
29 | /* We are not initialized yet, we can't be cancelled anyway. */ | |
30 | return PTHREAD_CANCEL_DEFERRED; | |
31 | ||
59b7fe99 ST |
32 | __pthread_mutex_lock (&p->cancel_lock); |
33 | oldtype = p->cancel_type; | |
34 | p->cancel_type = PTHREAD_CANCEL_ASYNCHRONOUS; | |
35 | __pthread_mutex_unlock (&p->cancel_lock); | |
36 | ||
37 | __pthread_testcancel (); | |
38 | ||
39 | return oldtype; | |
40 | } | |
41 | ||
42 | void __pthread_disable_asynccancel (int oldtype) | |
43 | { | |
44 | struct __pthread *p = _pthread_self (); | |
45 | ||
70ff58ce ST |
46 | if (___pthread_self == NULL) |
47 | /* We are not initialized yet, we can't be cancelled anyway. */ | |
48 | return; | |
49 | ||
59b7fe99 ST |
50 | __pthread_mutex_lock (&p->cancel_lock); |
51 | p->cancel_type = oldtype; | |
52 | __pthread_mutex_unlock (&p->cancel_lock); | |
53 | } |