| 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 | |
|---|
