1 | /* Compatibility routines for cthreads. |
2 | Copyright (C) 2000-2024 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 <assert.h> |
20 | #include <pthreadP.h> |
21 | |
22 | #define CTHREAD_KEY_INVALID (__cthread_key_t) -1 |
23 | |
24 | void |
25 | __cthread_detach (__cthread_t thread) |
26 | { |
27 | int err; |
28 | pthread_t pthread = (pthread_t) (uintptr_t) thread; |
29 | |
30 | err = __pthread_detach (th: pthread); |
31 | assert_perror (err); |
32 | } |
33 | weak_alias (__cthread_detach, cthread_detach) |
34 | |
35 | __cthread_t |
36 | __cthread_fork (__cthread_fn_t func, void *arg) |
37 | { |
38 | pthread_t thread; |
39 | int err; |
40 | |
41 | err = __pthread_create (newthread: &thread, NULL, start_routine: func, arg); |
42 | assert_perror (err); |
43 | |
44 | return (__cthread_t) (uintptr_t) thread; |
45 | } |
46 | weak_alias (__cthread_fork, cthread_fork) |
47 | |
48 | int |
49 | __cthread_keycreate (__cthread_key_t *key) |
50 | { |
51 | error_t err; |
52 | |
53 | err = __pthread_key_create (key: key, destr: 0); |
54 | if (err) |
55 | { |
56 | errno = err; |
57 | *key = CTHREAD_KEY_INVALID; |
58 | err = -1; |
59 | } |
60 | |
61 | return err; |
62 | } |
63 | weak_alias (__cthread_keycreate, cthread_keycreate) |
64 | |
65 | int |
66 | __cthread_getspecific (__cthread_key_t key, void **val) |
67 | { |
68 | *val = __pthread_getspecific (key: key); |
69 | return 0; |
70 | } |
71 | weak_alias (__cthread_getspecific, cthread_getspecific) |
72 | |
73 | int |
74 | __cthread_setspecific (__cthread_key_t key, void *val) |
75 | { |
76 | error_t err; |
77 | |
78 | err = __pthread_setspecific (key: key, value: (const void *) val); |
79 | if (err) |
80 | { |
81 | errno = err; |
82 | err = -1; |
83 | } |
84 | |
85 | return err; |
86 | } |
87 | weak_alias (__cthread_setspecific, cthread_setspecific) |
88 | |
89 | void |
90 | __mutex_lock_solid (void *lock) |
91 | { |
92 | __pthread_mutex_lock (mutex: lock); |
93 | } |
94 | |
95 | void |
96 | __mutex_unlock_solid (void *lock) |
97 | { |
98 | if (__pthread_spin_trylock (lock) != 0) |
99 | /* Somebody already got the lock, that one will manage waking up others */ |
100 | return; |
101 | __pthread_mutex_unlock (mutex: lock); |
102 | } |
103 | |