1 /* pthread_key_delete. Hurd version. 2 Copyright (C) 2002-2022 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 <pthread.h> 20 21 #include <pt-internal.h> 22 23 int __pthread_key_delete(pthread_key_t key)24__pthread_key_delete (pthread_key_t key) 25 { 26 error_t err = 0; 27 28 __pthread_key_lock_ready (); 29 30 __pthread_mutex_lock (&__pthread_key_lock); 31 32 if (key < 0 || key >= __pthread_key_count 33 || __pthread_key_destructors[key] == PTHREAD_KEY_INVALID) 34 err = EINVAL; 35 else 36 { 37 int i; 38 39 __pthread_key_destructors[key] = PTHREAD_KEY_INVALID; 40 __pthread_key_invalid_count++; 41 42 __libc_rwlock_rdlock (GL (dl_pthread_threads_lock)); 43 for (i = 0; i < GL (dl_pthread_num_threads); ++i) 44 { 45 struct __pthread *t; 46 47 t = GL (dl_pthread_threads)[i]; 48 49 if (t == NULL) 50 continue; 51 52 /* Just remove the key, no need to care whether it was 53 already there. */ 54 if (key < t->thread_specifics_size) 55 t->thread_specifics[key] = 0; 56 } 57 __libc_rwlock_unlock (GL (dl_pthread_threads_lock)); 58 } 59 60 __pthread_mutex_unlock (&__pthread_key_lock); 61 62 return err; 63 } 64 weak_alias (__pthread_key_delete, pthread_key_delete) 65