projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| d614a753 | 1 | /* Copyright (C) 2002-2020 Free Software Foundation, Inc. |
| 76a50749 UD |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. | |
| 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 | |
| 59ba27a6 | 16 | License along with the GNU C Library; if not, see |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| 76a50749 UD |
18 | |
| 19 | #include <errno.h> | |
| 20 | #include "pthreadP.h" | |
| 21 | #include <atomic.h> | |
| 22 | ||
| 23 | ||
| 24 | int | |
| fa872e1b | 25 | __pthread_key_delete (pthread_key_t key) |
| 76a50749 UD |
26 | { |
| 27 | int result = EINVAL; | |
| 28 | ||
| a1ffb40e | 29 | if (__glibc_likely (key < PTHREAD_KEYS_MAX)) |
| 76a50749 UD |
30 | { |
| 31 | unsigned int seq = __pthread_keys[key].seq; | |
| 32 | ||
| 33 | if (__builtin_expect (! KEY_UNUSED (seq), 1) | |
| 5a3ab2fc UD |
34 | && ! atomic_compare_and_exchange_bool_acq (&__pthread_keys[key].seq, |
| 35 | seq + 1, seq)) | |
| 76a50749 UD |
36 | /* We deleted a valid key. */ |
| 37 | result = 0; | |
| 38 | } | |
| 39 | ||
| 40 | return result; | |
| 41 | } | |
| fa872e1b | 42 | weak_alias (__pthread_key_delete, pthread_key_delete) |