1 | /* Compatibility routines for cthreads. |
2 | Copyright (C) 2000-2022 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 | |
29 | err = __pthread_detach (th: (pthread_t) thread); |
30 | assert_perror (err); |
31 | } |
32 | weak_alias (__cthread_detach, cthread_detach) |
33 | |
34 | __cthread_t |
35 | __cthread_fork (__cthread_fn_t func, void *arg) |
36 | { |
37 | pthread_t thread; |
38 | int err; |
39 | |
40 | err = __pthread_create (newthread: &thread, NULL, start_routine: func, arg); |
41 | assert_perror (err); |
42 | |
43 | return (__cthread_t) thread; |
44 | } |
45 | weak_alias (__cthread_fork, cthread_fork) |
46 | |
47 | int |
48 | __cthread_keycreate (__cthread_key_t *key) |
49 | { |
50 | error_t err; |
51 | |
52 | err = __pthread_key_create (key: key, destr: 0); |
53 | if (err) |
54 | { |
55 | errno = err; |
56 | *key = CTHREAD_KEY_INVALID; |
57 | err = -1; |
58 | } |
59 | |
60 | return err; |
61 | } |
62 | weak_alias (__cthread_keycreate, cthread_keycreate) |
63 | |
64 | int |
65 | __cthread_getspecific (__cthread_key_t key, void **val) |
66 | { |
67 | *val = __pthread_getspecific (key: key); |
68 | return 0; |
69 | } |
70 | weak_alias (__cthread_getspecific, cthread_getspecific) |
71 | |
72 | int |
73 | __cthread_setspecific (__cthread_key_t key, void *val) |
74 | { |
75 | error_t err; |
76 | |
77 | err = __pthread_setspecific (key: key, value: (const void *) val); |
78 | if (err) |
79 | { |
80 | errno = err; |
81 | err = -1; |
82 | } |
83 | |
84 | return err; |
85 | } |
86 | weak_alias (__cthread_setspecific, cthread_setspecific) |
87 | |
88 | void |
89 | __mutex_lock_solid (void *lock) |
90 | { |
91 | __pthread_mutex_lock (mutex: lock); |
92 | } |
93 | |
94 | void |
95 | __mutex_unlock_solid (void *lock) |
96 | { |
97 | if (__pthread_spin_trylock (lock) != 0) |
98 | /* Somebody already got the lock, that one will manage waking up others */ |
99 | return; |
100 | __pthread_mutex_unlock (mutex: lock); |
101 | } |
102 | |